CN105524570A - Adhesive tap component and binding product - Google Patents
Adhesive tap component and binding product Download PDFInfo
- Publication number
- CN105524570A CN105524570A CN201610031217.8A CN201610031217A CN105524570A CN 105524570 A CN105524570 A CN 105524570A CN 201610031217 A CN201610031217 A CN 201610031217A CN 105524570 A CN105524570 A CN 105524570A
- Authority
- CN
- China
- Prior art keywords
- adhesive tape
- stretch removable
- bonded
- tape
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000853 adhesive Substances 0.000 title claims abstract description 84
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 84
- 239000002390 adhesive tape Substances 0.000 claims abstract description 173
- 239000000758 substrate Substances 0.000 claims description 84
- 239000010410 layer Substances 0.000 claims description 70
- 239000012790 adhesive layer Substances 0.000 claims description 16
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 description 30
- 230000000052 comparative effect Effects 0.000 description 19
- 239000010408 film Substances 0.000 description 19
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000005498 polishing Methods 0.000 description 6
- 230000035882 stress Effects 0.000 description 6
- -1 polyethylene terephthalate Polymers 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- 229920001721 polyimide Polymers 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 229920002799 BoPET Polymers 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 244000062793 Sorghum vulgare Species 0.000 description 1
- 239000002313 adhesive film Substances 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 235000019713 millet Nutrition 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 229920006289 polycarbonate film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000004439 roughness measurement Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
- C09J7/29—Laminated material
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/10—Adhesives in the form of films or foils without carriers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
- C09J2203/33—Applications of adhesives in processes or use of adhesives in the form of films or foils for batteries or fuel cells
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/308—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive tape or sheet losing adhesive strength when being stretched, e.g. stretch adhesive
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention provides an adhesive tap component and a binding product, which belong to the technical field of pull-to-remove adhesive tapes and solve the problem that the existing pull-to-remove adhesive tape is easily broken when being removed at a large pulling angle. The adhesive tape component is used for being bound on at least one base and comprises a pull-to-remove adhesive tape and an intermediate layer, wherein the pull-to-remove adhesive tape has a binding surface; the intermediate layer covers at least part of the bonding surface of the pull-to-remove adhesive tape and has a first surface and a second surface opposite to each other; the first surface is used for binding with the base; the second surface is bound on the binding surface and at least part of the second surface directly contacts with the binding surface. The second surface has a Ra value between 0.1mu m to 7mu m.
Description
Technical Field
The invention belongs to the technical field of stretchable removable adhesive tapes, and particularly relates to an adhesive tape assembly and a bonded product.
Background
For portability, aesthetic appearance, and the like, batteries in many mobile terminals (e.g., mobile phones, tablet computers, notebook computers, and the like) are bonded to a housing by a double-sided adhesive tape. When the battery is to be removed due to inaccurate positioning, maintenance, etc., the battery can only be operated to be pulled off the double-sided adhesive tape because the double-sided adhesive tape is located between the battery and the case and cannot be removed. However, the mobile terminal mostly uses lithium batteries, which are flexible and easy to operate, and are easily damaged, and even the leakage of highly toxic electrolyte therein may cause danger. To this end, the battery in the mobile terminal may be fixed with a stretch removable adhesive tape.
As shown in fig. 1, the stretch removable adhesive tape 1 is contracted when stretched so that its bonding surface is subjected to a force perpendicular to the surface of the substrate 9 and separated from the substrate 9. Thus, as long as one end portion of the stretch removable adhesive tape 1 is left outside the substrates 9 (e.g., the battery and the case), the stretch removable adhesive tape 1 can be pulled out from between the two substrates 9 by stretching the end portion, and the two substrates 9 can be separated.
As shown in FIG. 2, after the stretch removable adhesive tape 1 shrinks and separates from the substrate 9, it moves a distance relative to the substrate 9 to come off from between the substrates 9. Due to the different structure of the substrate 9, the stretch removable adhesive tape 1 can only be stretched at a specific stretching angle (i.e. the stretching direction and the angle between the contact surface of the stretch removable adhesive tape 1 and the substrate 9) in many cases. In this case, one edge portion of the substrate 9 (the right end portion of the lower surface of the upper substrate 9 in fig. 2) comes into contact with the stretch removable adhesive tape 1 under a certain pressure due to the stretching force, so that the stretch removable adhesive tape 1 slides on the substrate 9 and receives a sliding resistance (including a friction force, an adhesive force, and the like) which increases with an increase in the stretching angle. Therefore, when the stretching angle is too large (e.g., at 45 ° to 90 °), the stretch removable adhesive tape 1 is easily pulled apart and cannot be removed normally.
Disclosure of Invention
It is an object of the present invention to provide an adhesive tape assembly with which stretch removable adhesive tapes can be prevented from being torn during removal (even if removed at a large stretch angle), improving reliability thereof.
The tape assembly is for adhering to at least one substrate and comprises:
a stretch removable adhesive tape having an adhesive surface;
an interposer covering at least a portion of the bonding side of the stretch removable adhesive tape and having opposing first and second sides; wherein,
the first side is for bonding to the substrate;
said second face being bonded to said bonding face with at least a portion of said second face being in direct contact with said bonding face;
the second face has an Ra value between 0.1 μm and 7 μm.
According to a particular embodiment of the invention, said second face has an Ra value comprised between 0.15 μm and 6 μm.
According to an embodiment of the present invention, the tape assembly further comprises a low-tack layer disposed between one end of the interposer and the stretch removable tape; and at least one of the adhesive strength between the low-adhesion layer and the stretch removable adhesive tape and the adhesive strength between the low-adhesion layer and the intermediate layer is smaller than the adhesive strength between the intermediate layer and the substrate.
Another object of the present invention is to provide a bonded article having a stretch removable adhesive tape therein, which is less likely to break when stretch removed (even if removed at a large stretch angle), and has high reliability.
The bonded article comprises:
a first substrate having a first surface to be bonded;
a stretch removable adhesive tape having an adhesive surface, a portion of the stretch removable adhesive tape being adhered to the first surface to be adhered and another portion extending beyond the first surface to be adhered;
the intermediate layer is at least arranged between the edge part of the first surface to be bonded and the stretch removable adhesive tape and is provided with a first surface and a second surface which are opposite; the first face is at least partially bonded to an edge portion of the first face to be bonded, the second face has an Ra value of 0.1 to 7 μm, and wherein the second face opposite to the first face bonded to the edge portion of the first face to be bonded is in direct contact with the bonding face.
According to one embodiment of the invention, the bonded article further comprises a second substrate having a second face to be bonded disposed opposite the first face to be bonded; and both sides of the stretch removable adhesive tape are provided with the bonding surfaces, and a part of the stretch removable adhesive tape is bonded between the first surface to be bonded and the second surface to be bonded.
According to one embodiment of the invention, the adhesive article is a mobile terminal; the first substrate is a battery; the second substrate is a housing of the mobile terminal.
Drawings
FIG. 1 is a schematic diagram of a conventional stretch removable adhesive tape being stretch removed;
FIG. 2 is a schematic view of a conventional stretch removable adhesive tape being stretch removed at a large stretch angle;
FIG. 3 is a cross-sectional view of a stretch removable adhesive tape according to an embodiment of the present invention;
FIG. 4 is a schematic top view of the stretch removable adhesive tape of FIG. 3;
FIG. 5 is a schematic cross-sectional view of the stretch removable adhesive tape of FIG. 3 being stretch removed;
FIG. 6 is a cross-sectional view of another stretch removable adhesive tape in accordance with an embodiment of the present invention;
FIG. 7 is a cross-sectional view of another stretch removable adhesive tape in accordance with an embodiment of the present invention;
FIG. 8 is a cross-sectional schematic view of an adhesive article using the stretch removable adhesive tape of FIG. 7 in accordance with an embodiment of the invention;
FIG. 9 is a schematic cross-sectional view of the stretch removable adhesive tape of the adhesive article of FIG. 8 being stretch removed;
FIG. 10 is another schematic cross-sectional view of the stretch removable adhesive tape of the adhesive article of FIG. 8 being stretch removed;
wherein the reference numerals are: 1. stretch removable adhesive tape; 11. a bonding surface; 2. an interposer; 21. a first side; 22. a second face; 219. a pressure sensitive adhesive; 3. a low-tack layer; 4. a non-adhesive layer; 9. a substrate; 91. a first substrate; 92. a second substrate.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Interpretation of terms
In the present invention, the following terms or descriptions have the following meanings:
"stretch removable adhesive tape" refers to an adhesive tape that, when adhered to a substrate, can be separated from the substrate by applying a tensile force along its length.
"stretch angle" refers to the angle between the direction of motion that actually stretches the stretch removable adhesive tape and the interface between the stretch removable adhesive tape and the substrate.
"pressure sensitive adhesive" means a substance that can be bonded to a substrate and that satisfies the following conditions at least at ambient temperature (5 ℃ to 40 ℃): (1) has lasting viscosity; (2) bonding can be achieved under pressure with a finger; (3) capable of changing shape to adhere to a substrate; (4) the cohesive strength is sufficient to provide substantially clean removal from the substrate.
The terms of orientation, such as up, down, left, right, and the like, set forth in the drawings are relative to each other only for the specific situation in the drawings, and do not limit the specific direction of the actual product of the present invention.
"mobile terminal" refers to a device with computing processing capability that can be carried by a user for use in mobility, including but not limited to cell phones, tablet computers (such as ipads), notebook computers, and the like.
Adhesive tape assembly
As shown in fig. 3 to 10, an embodiment of the present invention provides a tape assembly for adhering to at least one substrate 9, and the tape assembly includes:
stretch removable adhesive tape 1 having an adhesive surface 11;
an interposer 2 covering at least a portion of the bonding side 11 of the stretch removable adhesive tape 1 and having opposing first and second sides 21, 22; wherein,
the first face 21 is intended to be bonded to the substrate 9;
the second face 22 is bonded to the bonding face 11, and at least part of the second face 22 is directly contacted with the bonding face 11;
the second face 22 has an Ra value of between 0.1 μm and 7 μm.
That is, as shown in fig. 3 and 4, the tape assembly of the embodiment of the present invention includes a conventional stretch removable tape 1, at least one side of which is provided with an adhesive surface 11 (i.e., a surface having adhesiveness) for adhering to a substrate 9. At least a part of the bonding surface 11 is covered with the interposer 2, the side of the interposer 2 facing the bonding surface 11 is a second surface 22, the second surface 22 has a specific roughness, i.e., the Ra value (arithmetical mean deviation of contours) is between 0.1 μm and 7 μm, and at least a part of the second surface 22 is in direct contact with the bonding surface 11; while the other side of the interposer 2 is a first side 21, which first side 21 is intended to be bonded to the substrate 9.
When the tape assembly is adhered to the substrate 9, the interposer 2 is located between the stretch removable tape 1 and the substrate 9, and becomes an "intermediary" of the two, and the second surface 22 with a specific roughness is in contact with (the adhesive surface 11 of) the stretch removable tape 1. Thus, as shown in fig. 5, when the stretch removable adhesive tape 1 is stretched, the stretch removable adhesive tape 1 will separate from the interposer 2 and slide on the second surface 22, i.e. the sliding of the stretch removable adhesive tape 1 on the substrate 9 becomes sliding on the second surface 22. The present inventors have surprisingly found that if the surface (the second surface 22) in contact with the stretch removable adhesive tape 1 has a specific roughness, the sliding resistance with the stretch removable adhesive tape 1 is low. Therefore, the interposer 2 can reduce the sliding resistance when the stretch removable tape 1 is stretched and removed (especially when the stretching angle is large), thereby preventing the stretch removable tape 1 from being broken and improving the reliability of the tape assembly.
The low sliding resistance between the surface with a certain roughness and the stretch removable adhesive tape 1 may be due to the following reasons (the following statements are not limiting to the principle of the invention): when the stretch removable adhesive tape 1 is stretched, the surface molecules thereof are highly oriented and the surface undulations are largely eliminated, i.e., the surface of the stretch removable adhesive tape 1 becomes a smooth surface with low roughness, and at this time, if the surface in contact therewith is also smooth, the contact area therebetween is large, so that the stretch removable adhesive tape 1 still having a certain viscosity can be sufficiently bonded to the surface, and the sliding resistance is increased. Accordingly, if the face in contact with the stretch removable adhesive tape 1 is too rough, the stretch removable adhesive tape 1 is easily scratched by the peaks of the roughness structure during sliding, resulting in an increase in sliding resistance and making the stretch removable adhesive tape 1 easily broken. When the roughness is within a specific range, the effects of the above two aspects can be balanced to minimize the sliding resistance, and it is preferable to prevent the stretch removable adhesive tape 1 from being pulled apart.
According to one embodiment of the invention, the second face 22 has an Ra value of between 0.15 μm and 6 μm.
That is, the second face 22 preferably has an Ra value of 0.15 μm to 6 μm, more preferably 0.2 μm to 5 μm, and further preferably 0.5 μm to 4 μm.
The above stretch removable adhesive tape 1 can be any known stretch removable adhesive tape product, such as 6701-150 type stretch removable adhesive tape of 3M Innovation corporation (St. Paul, Minn., USA), which will not be described in detail herein.
Here, although each side of the stretch removable adhesive tape 1 is entirely the adhesive surface 11 in each drawing as an example, it should be understood that it is also possible if only a part of the positions in one side of the stretch removable adhesive tape 1 are the adhesive surfaces 11 and the remaining positions are non-adhesive. For example, one end of the stretch removable adhesive tape 1 may be free of adhesive to act as a pull tab when stretching is performed.
The above interposer 2 can be any known film layer, as long as one side thereof can be bonded to the substrate 9 and the other side thereof has the above specific roughness. Preferably, the interposer 2 may be made of a polymer material, such as polyimide, polyethylene terephthalate, polycarbonate, etc., which will not be described in detail herein.
The thickness of the interposer 2 may be typically several micrometers to several hundred micrometers, for example, between 5 μm and 800 μm, preferably between 10 μm and 500 μm, more preferably between 20 μm and 200 μm, and still more preferably between 25 μm and 100 μm.
According to one embodiment of the invention, the first side 21 is provided with a pressure sensitive adhesive 219 or double sided tape.
That is, since a portion of the surface of the tape assembly is the first side 21 of the interposer 2, in order to achieve the adhesion of the tape assembly to the substrate 9, the first side 21 is adhered to the substrate 9; therefore, the first face 21 is preferably provided with a pressure sensitive adhesive 219 or a double-sided adhesive tape. The pressure sensitive adhesive 219 may be a conventional acrylate pressure sensitive adhesive, a polyurethane pressure sensitive adhesive, a polyvinyl chloride pressure sensitive adhesive, etc., and will not be described in detail herein.
It is of course also possible if the first side 21 is free of adhesive, but instead is provided with adhesive or double-sided adhesive tape at the location on the substrate 9 where the adhesion is to be carried out.
According to one embodiment of the invention, both sides of the stretch removable adhesive tape 1 have adhesive surfaces 11, wherein only one adhesive surface 11 has the interposer 2 adhered thereto.
That is, as shown in fig. 3 and 6, the stretch removable adhesive tape 1 may have bonding surfaces 11 on both sides because the stretch removable adhesive tape 1 is generally used in a case where it is inconvenient to directly peel the tape from the substrate 9, and in such a case, the tape is generally bonded between two substrates 9, and thus it is preferable that both sides of the stretch removable adhesive tape 1 are bonded. In practical applications, it is generally determined in advance which direction the stretch removable tape 1 should be stretched (e.g., upward stretching in fig. 10) when the stretch removable tape 1 is to be removed, and the stretch removable tape 1 slides on the substrate 9 (e.g., the first substrate 91 in fig. 10) near one side of the stretching direction, so the stretch removable tape 1 only needs to have the interposer 2 on the side.
According to one embodiment of the invention, at least one end of the stretch removable adhesive tape 1 is free of an intermediary layer 2.
That is, as shown in fig. 3 and 7, at least one end of the stretch removable adhesive tape 1 is not provided with the above interposer 2. This is because when the stretch removable tape 1 is removed, the stretch removable tape 1 is separated from the interposer 2 to ensure that the stretch removable tape 1 can slide on the interposer 2 to reduce the sliding resistance. If the end of the stretch removable adhesive tape 1 also has the intermediate layer 2, the two ends are flush as shown in fig. 6, so it is difficult to separate the two at the ends.
According to an embodiment of the present invention, the dimension of the portion of the second face 22 in direct contact with the adhesive face 11 in the length direction of the stretch removable adhesive tape 1 is at least 5 mm.
That is, the second surface 22 of the interposer 2 directly contacting the adhesive surface 11 is at least 5 mm long in the removable adhesive tape 1 (other structures may be disposed between a portion of the second surface 22 and the adhesive surface 11). This is because, when stretching is performed, the sliding resistance is actually large only between the edge portion of the substrate 9 and the stretch removable adhesive tape 1, and therefore, at least at this position, the intermediary layer 2 (second face 22) directly contacting the adhesive face 11 must be provided. However, the present invention has found that the above portion having a large sliding resistance is generally within 5 mm in length, and therefore the second surface 22 directly contacting the bonding surface 11 should be at least 5 mm long. It is, of course, also possible if the second face 22, which is in direct contact with the adhesive face 11, is longer in length, thus better functioning to reduce the sliding resistance.
According to an embodiment of the present invention, on the bonding surface 11 to which the interposer 2 is bonded, the interposer 2 covers only a portion of the bonding surface 11 in the length direction of the stretch removable adhesive tape 1; alternatively, on the adhesive surface 11 to which the interposer 2 is adhered, the interposer 2 completely covers the adhesive surface 11 in the lengthwise direction of the stretch removable adhesive tape 1.
That is, on the bonding surface 11 with the interposer 2, the interposer 2 may cover only a part of the bonding surface 11 as shown in fig. 3. This is because, as described above, the portion having a relatively high sliding resistance is relatively short in length, so long as the intermediate layer 2 is provided on the bonding surface 11, and thus the bonding surface 11 of the stretch removable tape 1 is directly bonded to the substrate 9 at other positions, which can ensure that the original bonding performance of the stretch removable tape 1 is maintained.
Alternatively, as shown in fig. 6, if the adhesive surface 11 has the interposer 2, the interposer 2 may completely cover the adhesive surface 11. Obviously, if the interposer 2 is only located at a part of the stretch-removable tape 1, careful alignment is necessary to ensure that the interposer 2 is located at the edge of the substrate 9 (otherwise, the interposer 2 does not have the effect of reducing the sliding resistance), which is difficult to operate. If the interposer 2 covers the entire bonding surface 11, the operation is simpler.
According to an embodiment of the present invention, the dimension of the interposer 2 in the width direction of the stretch removable adhesive tape 1 is greater than or equal to the width of the stretch removable adhesive tape 1.
Obviously, from the viewpoint of reducing the sliding resistance and the convenience of use, the second face 22 should cover the entire width of the adhesive face 11, i.e., as shown in fig. 4, the interposer 2 should be as wide as or wider than the stretch removable adhesive tape 1.
Of course, if the width of the interposer 2 is smaller than the width of the stretch removable adhesive tape 1, it may also serve to reduce the sliding resistance to some extent. Generally, if the stretch removable adhesive tape 1 is to be reliably prevented from being pulled apart, the width of the interposer 2 should be at least 30%, more preferably at least 50%, and still more preferably at least 80% of the width of the stretch removable adhesive tape 1. Obviously, when the width of the interposer 2 is smaller than the width of the stretch removable adhesive tape 1, it should preferably be disposed at the middle of the stretch removable adhesive tape 1 in the width direction.
According to one embodiment of the present invention, the tape assembly further comprises a low-tack layer 3 provided between one end of the interposer 2 and the stretch removable tape 1; and at least one of the adhesive strength between the low-tack layer 3 and the stretch removable adhesive tape 1 and the adhesive strength between the low-tack layer 3 and the interposer 2 is smaller than the adhesive strength between the interposer 2 and the substrate 9.
That is, as shown in fig. 7, a low-tack layer 3 may be further provided between one end of the interposer 2 and the stretch removable adhesive tape 1 (obviously, where the low-tack layer 3 is provided, the second face 22 is not in direct contact with the adhesive face 11), and the low-tack layer 3 has a lower adhesive strength, so as to ensure that the adhesive strength thereof with the stretch removable adhesive tape 1 and/or the adhesive strength thereof with the interposer 2 is lower than the adhesive strength thereof with the substrate 9. Thus, the low-viscosity layer 3 functions to make the separation stress between the interposer 2 and the stretch-removable tape 1 smaller than the adhesive force between the interposer 2 and the substrate 9, thereby ensuring that the stretch-removable tape 1 is inevitably separated from the interposer 2 during the removal process, without causing the interposer 2 to be peeled off from the substrate 9 together with the stretch-removable tape 1.
According to one embodiment of the invention, the bond strength between the low-tack layer 3 and the stretch removable adhesive tape 1 is greater than the bond strength between the low-tack layer 3 and the interposer 2.
That is, as a more preferable mode, the adhesive strength between the low adhesive layer 3 and the stretch removable adhesive tape 1 is large, and the adhesive strength between the low adhesive layer 3 and the interposer 2 is small. Thus, when the stretch removable tape 1 is separated from the interposer 2, the low-viscosity layer 3 is bound to the stretch removable tape 1 and separated from the interposer 2, and the low-viscosity layer 3 is taken away with the stretch removable tape 1 being stretched (as shown in fig. 10), thereby not affecting the sliding of the stretch removable tape 1 on the interposer 2.
Specifically, the above low-tack layer 3 may employ an existing low-tack film or low-tack coating. Alternatively, since the surface (the second surface 22) of the interposer 2 in contact with the low-tack layer 3 is not tacky, the low-tack layer 3 may be a single-sided tape, and the adhesive surface thereof may be used to adhere the interposer 2. Of course, since it is preferable that the adhesive strength between the low-tack layer 3 and the stretch removable adhesive tape 1 is greater than the adhesive strength between the low-tack layer 3 and the interposer 2, the peel strength between the low-tack layer 3 and the interposer 2 cannot be so great, and may be generally between 1 g/inch and 200 g/inch, more preferably between 1 g/inch and 100 g/inch, and still more preferably between 0.5 g/inch and 50 g/inch.
According to an embodiment of the invention, the adhesive tape assembly further comprises a non-stick layer 4 provided on at least one side of at least one end of the stretch removable adhesive tape 1, the non-stick layer 4 being non-adhesive on the side facing away from the stretch removable adhesive tape 1.
That is, as shown in fig. 7, an outer non-adhesive layer (the inner side of which may be adhesive to be adhered to the stretch removable adhesive tape 1) may be further provided at the end of the stretch removable adhesive tape 1. As previously mentioned, the stretch removable adhesive tape 1 must have one end left outside the substrate 9 after bonding in order to perform the stretching operation. Before stretching, the non-adhesive layer 4 (functioning similarly to a release film) may be provided thereon in order to prevent the end portion from being accidentally bonded. The position, length, etc. of the non-adhesive layer 4 can be determined according to specific needs, for example, if the end of the stretch removable adhesive tape 1 is bent over and adhered to the first substrate 91 as shown in fig. 8, as long as the non-adhered side is provided with the non-adhesive layer 4. Specifically, the non-adhesive layer 4 may be a known non-adhesive film (e.g., a release film), a non-adhesive coating, a single-sided tape, etc., and will not be described in detail herein.
In fig. 7 to 10, the above low-tack layer 3 and the non-tack layer 4 are shown at the same time, but there is no necessary connection therebetween. One tape assembly product may have both the low tack layer 3 and the non-tack layer 4, or only one of them.
Wherein, on the outer side of the stretch removable adhesive tape 1 (the intermediary layer 2, the non-adhesive layer 4), a conventional release film or release paper can be further provided for protecting the adhesive surface 11 from accidental adhesion when not in use.
In some of the drawings of the embodiment of the present invention, the interposer 2, the low adhesive layer 3, the non-adhesive layer 4, etc. are recessed inside the stretch removable adhesive tape 1, but this is only for schematically indicating on which side of the stretch removable adhesive tape 1 these structures should be located, and does not represent that the stretch removable adhesive tape 1 is actually provided with a recess for accommodating these structures.
Adhesive article
Embodiments of the present invention also provide a bonded article comprising:
a first substrate 91 having a first surface to be bonded;
the stretch removable adhesive tape 1 is provided with an adhesive surface 11, one part of the stretch removable adhesive tape 1 is adhered to a first surface to be adhered, and the other part of the stretch removable adhesive tape 1 extends out of the first surface to be adhered;
an intermediary layer 2 which is at least arranged between the edge part of the first surface to be bonded and the stretch removable adhesive tape 1 and is provided with a first surface 21 and a second surface 22 which are opposite; the first face 21 is at least partially bonded to an edge portion of the first face to be bonded, the second face 22 has an Ra value of 0.1 μm to 7 μm, and wherein the second face 22 opposite to the first face 21 bonded to the edge portion of the first face to be bonded is in direct contact with the bonding face 11.
That is, as shown in fig. 8, the embodiment of the present invention provides an adhesive article including the stretch removable adhesive tape 1 and the intermediate layer 2. Wherein the stretch removable adhesive tape 1 is disposed on the first surface to be bonded of the first substrate 91, and the above-mentioned intermediate layer 2 is disposed between at least the edge portion of the first surface to be bonded and the stretch removable adhesive tape 1, and further, the second surface 22 at least at the edge portion is in direct contact with the bonding surface 11, so as to ensure that the intermediate layer 2 can play a role of reducing sliding resistance and preventing the stretch removable adhesive tape 1 from being pulled apart when the stretch removable adhesive tape 1 is stretch removed.
Specifically, the above adhesive article may be obtained by adhering the above adhesive tape assembly to the first substrate 91. However, the above adhesive product can also be obtained if the interposer 2 is attached to the first substrate 91 separately and then the stretch removable adhesive tape 1 is attached to the interposer 2 and the first substrate 91.
According to one embodiment of the invention, the first substrate 91 further comprises a side portion contiguous to the first face to be bonded; the stretch removable adhesive strip 1 is at least partially bonded on the side portion; an interposer 2 is also provided between the side portion and the stretch removable adhesive tape 1.
That is, the side of the first substrate 91 may also be provided with the above stretch removable adhesive tape 1 and the intermediate layer 2. This is because as shown in fig. 8, the stretch removable adhesive tape 1 is also adhered to the side surface of the first substrate 91 in many cases, and when the stretching angle is large (e.g. close to 90 °), the side surface of the first substrate 91 and the stretch removable adhesive tape 1 also generate a large sliding resistance, so that the position is preferably provided with the intermediary layer 2.
In accordance with one embodiment of the present invention, the bonded article further includes a second substrate 92 having a second surface to be bonded disposed opposite the first surface to be bonded; and both sides of the stretch removable adhesive tape 1 are provided with bonding surfaces 11, and a part of the stretch removable adhesive tape 1 is bonded between the first surface to be bonded and the second surface to be bonded.
That is, as shown in fig. 8, the above tape assembly can bond the first substrate 91 and the second substrate 92 together, so that a portion of the stretch removable tape 1 should be located between the two surfaces to be bonded, and as mentioned above, in order to ensure that the stretch removable tape 1 can be stretch removed, the stretch removable tape 1 should have at least one end located outside the two surfaces to be bonded.
Of course, the above structures of the low-tack layer 3, the non-adhesive layer 4, and the like may also be included in the adhesive article, and the presence of these structures cannot affect the function of the stretch removable adhesive tape 1 itself. For example, if the low-viscosity layer 3 is provided, it may be located at one end of the interposer 2, and may be present only at a position corresponding to the upper surface (or side surface) of the first substrate 91, or may be absent at a position corresponding to the bottom surface of the first substrate 91. For another example, if there is a non-stick layer 4, it should be located outside of both substrates so as not to interfere with the adhesion to the substrates.
According to one embodiment of the present invention, the adhesive article is a mobile terminal; the first substrate 91 is a battery; the second substrate 92 is a case of the mobile terminal.
That is, the present invention is particularly suitable for fixing a battery of a mobile terminal (e.g., a mobile phone, a tablet computer, a notebook computer, etc.), and particularly, for bonding the battery to a housing of the mobile terminal. Of course, the above examples should not be construed as limiting the scope of the invention.
When the battery (e.g., lithium battery) of the above mobile terminal is to be detached, the end portion of the stretch removable adhesive tape 1 and the low adhesive layer 3 may be peeled off from the substrate and the interposer 2, as shown in fig. 9. Then, as shown in fig. 10, the end portion of the stretch removable adhesive tape 1 is stretched to separate the stretch removable adhesive tape 1 from the two substrates and the interposer 2, and the stretch removable adhesive tape 1 slides on the interposer 2 at the edge portion of the substrate 9 (the right end portion of the lower surface of the first substrate 91 in the figure) during the stretching process, so that the stretch removable adhesive tape 1 is less resistant to sliding and is not easily broken. After the stretch removable adhesive tape 1 is completely removed, the battery (the first substrate 91) can be taken out and reversed, and the residual interposer 2 thereon can be torn off, thereby completing the disassembly of the battery.
Test method
1) Roughness measurement
The method for testing the roughness of the interposer comprises the following steps: the interposer was cut into 10cm × 10cm pieces, laid on a glass plate, both sides fixed with a single-sided tape, and tested for roughness (Ra value) with a TR-200 roughness tester of the kurtosis technologies corporation of beijing times (china, beijing), with a 4mm test run and 5 pieces of data for each interposer.
2) Mechanical stretching
The stretch removable adhesive tape in the above bonded article was stretched with a mechanical device, tested for maximum tensile stress and whether it broke, and specifically included:
the 9495LE double-sided tape from 3M Innovation Inc. (St. Paul, Minn., USA) was attached to the interposer on one side and cut into 20mm x 120mm pieces, after which the opposite side of the double-sided tape was attached to a 20mm x 100mm x 2mm block of anodized aluminum (with the grown portions on the sides and back of the block of anodized aluminum).
Model 6701-150 stretch removable adhesive tape (150 μ M thick, adhesive on both sides) from 3M Innovation corporation (St. Paul, Minn.) was cut into 10mm by 80mm pieces.
The stretch removable tape was attached to the interposer (in contact with the second side of the interposer) on the anodized aluminum block with the end exposed 10mm as a handle and the stretch removable tape on the handle portion was attached with a PE film (polyethylene film) as a non-adhesive layer.
The anodized aluminum block is attached to the stainless steel plate with the stretch removable adhesive tape on the other side in the middle, which is equivalent to bonding the anodized aluminum block and the stainless steel plate together with the upper adhesive tape assembly.
A6 kg press was used to maintain the pressure for 15 seconds to ensure adequate bonding.
Part of the sample was left for 1 hour and part of the sample was aged for 72 hours at a temperature of 65 ℃ and a relative humidity of 90%.
The stainless steel plate and the anodized aluminum block were fixed, the stretch removable tape was stretched with an Instron model 3365 tensile tester from Instron corporation (norwood, ma, usa) at a tensile angle of 90 ° and a tensile speed of 300mm/min, and the maximum tensile stress and whether or not a break occurred were recorded, and 5 data were measured for each sample.
3) Hand stretching
The stretch removable adhesive tape in the above bonded article was stretched by hand to test whether it broke, which specifically included:
an interposer was attached to one side of 9495LE double-sided tape from 3M Innovation corporation (St. Paul, Minn., USA) and cut into 20mm pieces, and then the other side of the double-sided tape was attached to the bottom edge and the side of the HuaWeiHB417094EBC cell from Huashi technology Inc. (Shenzhen, Guangdong, China), wherein the thickness of the side portion was 6mm, and thus the length of the interposer attached to the bottom edge of the cell was 14 mm.
Model 6701-150 stretch removable adhesive tape (150 μ M thick, adhesive on both sides) from 3M Innovation corporation (St. Paul, Minn.) was cut into 10mm by 80mm pieces.
The stretch removable adhesive tape was attached to the bottom and side surfaces of the above battery, leaving a 10mm tab, wherein the stretch removable adhesive tape was provided on the interposer (in contact with the second surface of the interposer) at the edge portion and side surface of the bottom surface of the battery, and the stretch removable adhesive tape was directly attached to the battery at other positions on the bottom surface of the battery.
The press is maintained for 15 seconds at 6 kg to ensure adequate attachment and the sample is left for 1 hour.
The stretch removable tape was stretched by hand at a stretch angle of about 90 ° and a speed of about 2000mm/min, and the presence or absence of break was recorded, with 5 data measured for each sample.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Example 1
One surface of a polyimide film (PI original film) having a thickness of 25 μ M, which is manufactured by the revhuatai thin film technology ltd (china, guangdong, shenzhen), was polished with 320-mesh sandpaper of 3M innovative company (santa paul, minnesota, usa) to be used as an intermediate layer, and the polished surface was used as a second surface.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Example 2
One surface of a polyimide film (PI original film) having a thickness of 25 μ M, which is manufactured by reulea thin film technologies ltd (china, guangdong, shenzhen), was polished with 500-mesh sandpaper of 3M innovative corporation (santa paul, minnesota, usa) to serve as an intermediate layer, and the polished surface was used as a second surface.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Comparative example 1
The PI original film (polyimide film) with the thickness of 25 mu m of Rihuatai film science and technology Limited (China, Guangdong, Shenzhen) is directly used as an intermediate layer without polishing.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Example 3
One surface of a PET film (polyethylene terephthalate film) of type TORAYL01 from TORAY corporation (tokyo, japan) was polished with 320-mesh sandpaper from 3M innovative company (st. paul, mn, usa) to be used as an intermediate layer, and the polished surface was used as a second surface.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Example 4
One surface of a PET film (polyethylene terephthalate film) of type TORAYL01 from TORAY corporation (tokyo, japan) was polished with 500-mesh sandpaper from 3M innovative company (st. paul, mn, usa) to be used as an intermediate layer, and the polished surface was used as a second surface.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Comparative example 2
A PET film (polyethylene terephthalate film) of type TORAYL01 from TORAY corporation (tokyo, japan) was used as an intermediate layer without polishing.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Example 5
A type 7585 label material from 3M innovative corporation (st. paul, minnesota, usa) was used directly as an intermediate layer without buffing.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Comparative example 3
The label stock model 57817 from 3M Innovation corporation (St. Paul, Minn.) was used directly as an intermediate layer without grinding.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Example 6
The ATL battery film of Beijing millet science and technology Limited liability company (China, Beijing) is directly used as the medium layer without polishing.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Comparative example 4
The test was performed without using an interposer, and with a film layer on the surface of the huaWeihb417094EBC type cell itself from Huashi technology corporation (china, Guangdong, Shenzhen), without polishing, and the test results are shown in the following tables.
Among them, the method of mechanical stretching is similar to the above description except that the double-sided tape, the interposer and the anodized aluminum block are not used, but the stretch removable tape is directly provided between the above cell and the stainless steel plate. The method of manual stretching is also similar to that described above, except that the stretch removable adhesive tape is directly bonded to the surface of the above cell without using an intermediary layer. Of course, other parameters, modes, etc. in the test method are unchanged at this time.
Example 7
PC film model GHF860M2AB (polycarbonate film) from Sumitomo (Sumitomo) group (tokyo, japan) was used as an intermediate layer without polishing.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Comparative example 5
A 2SLKN type release film from Mitsubishi group (tokyo, japan) was used as an intermediate layer without polishing.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
Example 8
A 1002BO model automotive black film from 3M innovative corporation (st. paul, mn, usa) was used directly as an intermediary layer without sanding.
The above tests were carried out after the adhesive articles were made with the interposer, and the test results are shown in the tables below.
TABLE 1 roughness of the second side of the interposer for each of the examples and comparative examples
| Item | Ra value 1 (. mu.m) | Ra value 2 (. mu.m) | Ra value 3(μm) | Ra value 4(μm) | Ra value 5(μm) | Average Ra value |
| Example 1 | 1.069 | 1.907 | 1.791 | 1.085 | 1.174 | 1.405 |
| Example 2 | 0.384 | 0.283 | 0.299 | 0.541 | 0.528 | 0.407 |
| Comparative example 1 | 0.068 | 0.090 | 0.075 | 0.098 | 0.098 | 0.086 |
| Example 3 | 1.66 | 1.60 | 1.50 | 2.16 | 1.86 | 1.76 |
| Example 4 | 0.420 | 0.588 | 0.512 | 0.509 | 0.692 | 0.544 |
| Comparative example 2 | 0.056 | 0.029 | 0.035 | 0.051 | 0.050 | 0.044 |
| Example 5 | 0.657 | 0.664 | 0.645 | 0.671 | 0.663 | 0.660 |
| Comparative example 3 | 0.094 | 0.069 | 0.096 | 0.076 | 0.067 | 0.077 |
| Example 6 | 0.221 | 0.255 | 0.166 | 0.197 | 0.324 | 0.233 |
| Comparative example 4 | 0.076 | 0.065 | 0.059 | 0.064 | 0.079 | 0.069 |
| Example 7 | 2.223 | 2.102 | 2.452 | 2.302 | 3.536 | 2.523 |
| Comparative example 5 | 0.092 | 0.052 | 0.049 | 0.104 | 0.072 | 0.080 |
| Example 8 | 5.48 | 6.896 | 6.166 | 5.94 | 6.867 | 6.270 |
Table 2, maximum tensile stress at 1 hour dwell time for mechanical tensile for each example and comparative example (not labeled indicates no break)
Table 3, maximum tensile stress of mechanical tensile stress after aging for 72 hours (not shown indicates no fracture)
| Protective layer | Data 1(N) | Data 2(N) | Data 3(N) | Data 4(N) | Data 5(N) | Average (N) |
| Example 1 | 5.88 | 5.86 | 6.72 | 7.48 | 6.56 | 6.50 |
| Example 2 | 7.31 | 11.057 | 5.05 | 4.90 | 8.90 | 7.44 |
| Example 3 | 7.82 | 8.30 | 7.81 | 8.21 | 7.12 | 7.85 |
| Example 4 | 7.53 | 6.62 | 4.67 | 7.62 | 7.51 | 6.79 |
| Example 5 | 4.47 | 8.11 | 8.05 | 4.36 | 5.64 | 6.13 |
| Example 6 | 10.77 | 7.24 | 9.38 | 12.36 | 10.24 | 10.00 |
| Example 7 | 8.04 | 8.96 | 6.83 | 7.16 | 8.91 | 7.98 |
| Example 8 | 6.17 | 6.24 | 6.68 (Break) | 5.42 | 5.44 | 5.99 |
Table 4, test results of Manual stretching of examples and comparative examples
| Protective layer | Data 1 | Data 2 | Data 3 | Data 4 | Data 5 | Average |
| Example 1 | Not broken | Not broken | Not broken | Not broken | Not broken | Not broken |
| Example 2 | Not broken | Not broken | Not broken | Not broken | Not broken | Not broken |
| Comparative example 1 | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of |
| Example 3 | Not broken | Not broken | Not broken | Not broken | Not broken | Not broken |
| Example 4 | Not broken | Not broken | Not broken | Not broken | Not broken | Not broken |
| Comparative example 2 | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of |
| Example 5 | Not broken | Not broken | Not broken | Not broken | Not broken | Not broken |
| Comparative example 3 | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of |
| Example 6 | Not broken | Not broken | Not broken | Not broken | Not broken | Not broken |
| Comparative example 4 | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of |
| Example 7 | Not broken | Not broken | Not broken | Not broken | Not broken | Not broken |
| Comparative example 5 | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of | Fracture of |
| Example 8 | Not broken | Fracture of | Not broken | Not broken | Not broken | Not broken |
As can be seen from the above examples, when the Ra value of the second surface of the interposer is in the range of 0.1 μm to 7 μm, all the stretch removable tapes can be smoothly removed without breaking, except for the individual sample breaking in example 8 where the Ra value is the largest. This indicates that roughness in the above range is indeed effective in preventing the stretch removable adhesive tape from being pulled apart. Moreover, if the Ra value is too large, it is disadvantageous to prevent the stretch removable adhesive tape from breaking, so the Ra value of the above second side of the interposer is preferably less than 6 μm, more preferably less than 5 μm.
Accordingly, it can be seen from the above respective comparative examples that when the Ra value of the second surface of the interposer is less than 0.1 μm, most of the stretch removable tapes are pulled apart in the mechanical stretching, and all of the stretch removable tapes are pulled apart in the manual stretching. In practice, however, it is generally not possible to remove the stretch removable tape slowly by a machine, so that the result of manual stretching is more referential. This indicates that the conventional concept of considering that the smaller the roughness, the smaller the sliding resistance is incorrect, and if the roughness of the second face is too low, the stretch removable adhesive tape may be pulled apart.
Therefore, no matter what the material, the original purpose and whether the intermediate layer is polished, the second surface of the intermediate layer can play a better role in preventing the stretch removable adhesive tape from being broken in the removing process as long as the roughness of the second surface is in the above specific range; and if the roughness thereof is beyond this range, either too large or too small, it easily causes the stretch removable adhesive tape to be pulled apart. This shows that the reliability of the stretch removable adhesive tape can be improved by preventing the stretch removable adhesive tape from breaking only by controlling the roughness of the second surface of the interposer within the specific range in the manner of the present invention.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.
Claims (15)
1. An adhesive tape assembly for bonding to at least one substrate, wherein the adhesive tape assembly comprises:
a stretch removable adhesive tape having an adhesive surface;
an interposer covering at least a portion of the bonding side of the stretch removable adhesive tape and having opposing first and second sides; wherein,
the first side is for bonding to the substrate;
said second face being bonded to said bonding face with at least a portion of said second face being in direct contact with said bonding face;
the second face has an Ra value between 0.1 μm and 7 μm.
2. The tape assembly of claim 1,
the second face has an Ra value between 0.15 μm and 6 μm.
3. The tape assembly of claim 1,
the first surface is provided with a pressure sensitive adhesive or a double-sided adhesive tape.
4. The tape assembly of claim 1,
both sides of the stretch removable adhesive tape have the adhesive surfaces, wherein only one of the adhesive surfaces has the interposer adhered thereto.
5. The tape assembly of claim 1,
at least one end of the stretch removable adhesive tape is free of the interposer.
6. The tape assembly of claim 1,
a dimension of the interposer in a width direction of the stretch removable adhesive tape is greater than or equal to a width of the stretch removable adhesive tape.
7. The tape assembly of claim 1,
the dimension of the portion of the second face in direct contact with the bonding face in the length direction of the stretch removable adhesive tape is at least 5 mm.
8. The tape assembly of claim 1,
on the bonding surface bonded with the interposer, the interposer covers only a part of the bonding surface along the length direction of the stretch removable adhesive tape;
or
On the bonding surface to which the interposer is bonded, the interposer completely covers the bonding surface in the length direction of the stretch removable adhesive tape.
9. The tape assembly of claim 1, further comprising:
a low-tack layer disposed between one end of the interposer and the stretch removable adhesive tape; and at least one of the adhesive strength between the low-adhesion layer and the stretch removable adhesive tape and the adhesive strength between the low-adhesion layer and the intermediate layer is smaller than the adhesive strength between the intermediate layer and the substrate.
10. The tape assembly of claim 9,
the bond strength between the low-tack layer and the stretch removable adhesive tape is greater than the bond strength between the low-tack layer and the intermediate layer.
11. The tape assembly of claim 1, further comprising:
a non-adhesive layer provided on at least one side of at least one end portion of the stretch removable adhesive tape, a face of the non-adhesive layer away from the stretch removable adhesive tape being non-adhesive.
12. A bonded article, comprising:
a first substrate having a first surface to be bonded;
a stretch removable adhesive tape having an adhesive surface, a portion of the stretch removable adhesive tape being adhered to the first surface to be adhered and another portion extending beyond the first surface to be adhered;
the intermediate layer is at least arranged between the edge part of the first surface to be bonded and the stretch removable adhesive tape and is provided with a first surface and a second surface which are opposite; the first face is at least partially bonded to an edge portion of the first face to be bonded, the second face has an Ra value of 0.1 to 7 μm, and wherein the second face opposite to the first face bonded to the edge portion of the first face to be bonded is in direct contact with the bonding face.
13. The bonded article of claim 12,
the first substrate further comprises a side part connected with the first surface to be bonded;
the stretch removable adhesive strip is at least partially bonded on the side portion;
the interposer is also disposed between the side portion and the stretch removable adhesive tape.
14. The bonded article of claim 12, further comprising a second substrate having a second face to be bonded disposed opposite the first face to be bonded; and is
Both sides of the stretch removable adhesive tape are provided with the bonding surfaces, and a part of the stretch removable adhesive tape is bonded between the first surface to be bonded and the second surface to be bonded.
15. The bonded article of claim 14,
the adhesive article is a mobile terminal;
the first substrate is a battery;
the second substrate is a housing of the mobile terminal.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031217.8A CN105524570B (en) | 2016-01-18 | 2016-01-18 | Adhesive tape assembly, bonded product |
| PCT/US2017/013348 WO2017127293A1 (en) | 2016-01-18 | 2017-01-13 | Adhesive tape assembly and bonding product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610031217.8A CN105524570B (en) | 2016-01-18 | 2016-01-18 | Adhesive tape assembly, bonded product |
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| CN105524570A true CN105524570A (en) | 2016-04-27 |
| CN105524570B CN105524570B (en) | 2018-10-12 |
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| WO (1) | WO2017127293A1 (en) |
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| CN107722855A (en) * | 2017-08-29 | 2018-02-23 | 张家港康得新光电材料有限公司 | Adhesive tape assembly, there is its battery compartment and mobile device |
| EP3418341A1 (en) * | 2017-06-19 | 2018-12-26 | Guangdong OPPO Mobile Telecommunications Corp., Ltd. | Stretch release adhesive, housing assembly and electronic device |
| EP3428241A1 (en) * | 2017-07-14 | 2019-01-16 | Guangdong OPPO Mobile Telecommunications Corp., Ltd. | Stretch release adhesive, battery assembly and housing assembly |
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| CN113543971B (en) * | 2019-03-26 | 2023-12-01 | Dic株式会社 | Adhesive body, method for assembling adhesive body, and method for removing adhesive body |
| KR102752435B1 (en) * | 2019-11-11 | 2025-01-08 | 주식회사 엘지에너지솔루션 | Battery module, battery pack and vehicle comprising the battery module |
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| CN101688092A (en) * | 2007-06-28 | 2010-03-31 | 3M创新有限公司 | Removable adhesive tape and pull tab film, and kits |
| US20150218425A1 (en) * | 2014-02-05 | 2015-08-06 | Apple Inc. | Stretch release conductive adhesive |
| US20150315421A1 (en) * | 2014-04-30 | 2015-11-05 | Tesa Se | Auxiliary adhesive tape for a removable adhesive film |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10063854A1 (en) * | 2000-12-21 | 2002-09-05 | Tesa Ag | Removable device |
| US9310847B2 (en) * | 2012-11-02 | 2016-04-12 | Apple Inc. | Component removal systems for portable computers |
| EP3116964A4 (en) * | 2014-03-11 | 2017-08-02 | 3M Innovative Properties Company | Stretch releasable adhesive article, usage and manufacturing the same |
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2016
- 2016-01-18 CN CN201610031217.8A patent/CN105524570B/en active Active
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2017
- 2017-01-13 WO PCT/US2017/013348 patent/WO2017127293A1/en not_active Ceased
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| CN1281493A (en) * | 1997-12-12 | 2001-01-24 | 美国3M公司 | Removable adhesive tape laminate and separable fastener |
| US6406781B1 (en) * | 1998-06-23 | 2002-06-18 | 3M Innovative Properties Company | Stretch release adhesive article with stabilizer |
| US20060068144A1 (en) * | 2004-09-29 | 2006-03-30 | 3M Innovative Properties Company | Stretch releasing adhesive article for fragile surfaces |
| CN101688092A (en) * | 2007-06-28 | 2010-03-31 | 3M创新有限公司 | Removable adhesive tape and pull tab film, and kits |
| US20150218425A1 (en) * | 2014-02-05 | 2015-08-06 | Apple Inc. | Stretch release conductive adhesive |
| US20150315421A1 (en) * | 2014-04-30 | 2015-11-05 | Tesa Se | Auxiliary adhesive tape for a removable adhesive film |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195823A (en) * | 2017-06-19 | 2017-09-22 | 广东欧珀移动通信有限公司 | Easy-to-draw glue, battery component, casing assembly and electronic equipment |
| EP3418341A1 (en) * | 2017-06-19 | 2018-12-26 | Guangdong OPPO Mobile Telecommunications Corp., Ltd. | Stretch release adhesive, housing assembly and electronic device |
| US10532538B2 (en) | 2017-06-19 | 2020-01-14 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Stretch release adhesive, housing assembly and electronic device |
| CN107195823B (en) * | 2017-06-19 | 2023-05-19 | 深圳市欢太科技有限公司 | Yi Lajiao, battery pack, housing pack and electronic device |
| EP3428241A1 (en) * | 2017-07-14 | 2019-01-16 | Guangdong OPPO Mobile Telecommunications Corp., Ltd. | Stretch release adhesive, battery assembly and housing assembly |
| CN107722855A (en) * | 2017-08-29 | 2018-02-23 | 张家港康得新光电材料有限公司 | Adhesive tape assembly, there is its battery compartment and mobile device |
| CN114380149A (en) * | 2022-01-27 | 2022-04-22 | 悦海自动化设备(威海)有限公司 | Automatic adhesive tape winding equipment |
| CN114380149B (en) * | 2022-01-27 | 2024-03-26 | 悦海自动化设备(威海)有限公司 | Automatic section tape winding equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105524570B (en) | 2018-10-12 |
| WO2017127293A1 (en) | 2017-07-27 |
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Effective date of registration: 20200708 Address after: F4-1 plot, Jinshan Chemical Industry Park, Shanghai Patentee after: 3M SHANGHAI SPECIALTY MATERIALS Co.,Ltd. Address before: American Minnesota Patentee before: 3M INNOVATIVE PROPERTIES Co. |