CN107903835A - Electrostatic Absorption adhesive tape and preparation method thereof - Google Patents

Abstract

The invention discloses a kind of Electrostatic Absorption adhesive tape; including protective layer, the side side of protective layer is equipped with is respectively equipped with protection zone positioned at the adhesion zone at middle part, the both sides of adhesion zone; it is equipped with adhesion zone and uses adhesive linkage made of adhesive, smooth Electrostatic Absorption face is equipped with protection zone.The invention also discloses a kind of preparation method of Electrostatic Absorption adhesive tape as described above, include the following steps：a）Prepare bonding material：Release liners are covered each by the both sides of bonding material；b）Cut or cut into slices for the first time；c）It is compound：The a plurality of bonding material of slitting shape is compounded on the Electrostatic Absorption face of the protective layer, gap is equipped between adjacent two bonding materials, and the width in gap is equal to twice of the protection sector width of setting；Or the bonding material array of section is compounded on the adhesion zone of the protective layer, gap is equipped between adjacent two panels bonding material, and the width in gap is equal to twice of the protection zone of setting；d）Second of slitting；e）Wind or stack.

Description

Electrostatic adsorption adhesive tape and preparation method thereof

technical field

The invention belongs to the technical field of adhesive tapes, in particular to an electrostatic adsorption adhesive tape and a preparation method thereof.

Background technique

Scotch tape was invented by Richard Drew in St. Paul, Minnesota, USA in 1928. Adhesive tapes can be divided into high temperature tapes, double-sided tapes, insulating tapes, special tapes, pressure sensitive tapes and die-cut tapes according to their functions. Different functions can meet different industry requirements. A layer of adhesive is coated on the surface of the tape to make the tape stick to the object. The earliest adhesives came from animals and plants. In the 19th century, rubber was the main component of the adhesive; in modern times, various polymers are widely used.

The tape is usually exposed to the air during use, and it is easy to reduce the performance of the adhesive layer of the tape under the action of dirt, water vapor or external force, or affect its bonding performance, so that the service life of the tape is greatly reduced. The ordinary adhesive tapes on the market today cannot take into account both adhesion and stability, and further research and development is needed.

Some of the existing medical tapes on the market usually have poor viscosity, poor water resistance and aging resistance. Treatment costs are rising.

Contents of the invention

In view of this, the object of the present invention is to provide an electrostatic adsorption adhesive tape and a preparation method thereof, which can make the adhesive tape not easy to be edged and degummed, and can effectively improve the bonding stability and durability of the adhesive tape.

To achieve the above object, the present invention provides the following technical solutions:

The present invention firstly proposes an electrostatic adsorption adhesive tape, which is characterized in that: it includes a protective layer made of flexible material, and one side surface of the protective layer is provided with an adhesive area in the middle, and the two adhesive areas of the adhesive area are Protective areas are provided on the sides or surroundings, and an adhesive layer made of adhesive is provided in the bonding area, and a smooth electrostatic adsorption surface is provided in the protective area.

Further, the adhesive layer is made of industrial adhesive or medical adhesive, and the medical adhesive is hydrocolloid, acrylic glue, silica gel, hot melt adhesive, pressure sensitive adhesive, adhesive plaster, fibrin Either adhesive or bone cement.

Further, the adhesive layer is made of medical adhesive;

It also includes a functional layer, the functional layer is located between the adhesive layer and the protective layer or on the side of the adhesive layer facing away from the protective layer, and the functional layer is made of medical functional treatment auxiliary materials or absorbent Made of liquid material.

Further, the sum of the thicknesses of the adhesive layer and the functional layer is less than or equal to 3mm; the ratio of the sum of the thicknesses of the adhesive layer and the functional layer to the width of the protected area is greater than or equal to 1:10.5.

Further, the ratio of the thickness of the adhesive layer to the width of the protected area is greater than or equal to 1:10.5.

Further, the thickness of the protection zone is 0.005-1 mm.

Further, the material specific gravity of the protective layer is 0.95-1.8g/cm ³ , and the shoreA hardness is 8-80.

Further, after electrostatic adsorption between the protected area and the surface of the adherend, an included angle of less than or equal to 70° is formed with the bonding area.

The present invention also proposes a preparation method of the electrostatic adsorption adhesive tape as described above, comprising the steps of:

a) Preparation of adhesive material: Cover release paper on both sides of the adhesive material, and the peeling force between the release paper of one layer and the adhesive is smaller than that of the other layer of release paper and adhesive The peel force between the adhesives;

b) Cutting or slicing for the first time: Cut the adhesive covering the release paper into long strips with a set width or sheets with a set geometric size;

c) Composite: Composite multiple strips of adhesives cut into long strips on the bonding area of the protective layer, and there is a gap between two adjacent adhesives, and the width of the gap is equal to the set protection area twice the width; or compound the sliced bonding material array on the bonding area of the protective layer, a gap is provided between adjacent two bonding materials, and the width of the gap is equal to the set protective area double;

d) Second cutting or slicing: take the midline of the gap between two adjacent adhesive materials as the cutting line, cut the protective layer, and make a plurality of electrostatic adsorption tapes; or use two adjacent adhesive tapes The midline of the gap between the adhesives is the cutting line, and the protective layer is cut to make a plurality of electrostatic adsorption tapes;

e) Rewinding or stacking.

Further, the adhesive includes an adhesive layer; or,

The adhesive includes an adhesive layer and a functional layer that are compounded together, and the compounding method of the adhesive layer or the functional layer is as follows: an adhesive is filled between two layers of release papers of different grammes to form an adhesive layer , filling functional materials between two layers of release paper of different grammages to form a functional layer, and combining the adhesive layer and the functional layer to form the bonding material covered with release papers of different grammages on both sides .

The beneficial effects of the present invention are:

The electrostatic adsorption adhesive tape of the present invention is provided with protection areas on both sides or around the bonding area. When in use, the bonding area is bonded to the adherend, and then the electrostatic adsorption surface of the protection area is used to adsorb on the object to be adhered. In this way, the protection zone electrostatically adsorbed with the adherend can effectively prevent external dust, dirt and water vapor from directly acting on the bonding surface between the adhesive layer and the adherend, and can effectively improve the adhesion. At the same time, the protection area can also prevent the edge from rising, and because the protection area has sufficient width, even if the protection area has an edge, it will not affect the bonding effect of the bonding area, further improving the bonding stability and Persistence.

Description of drawings

In order to make the purpose, technical scheme and beneficial effect of the present invention clearer, the present invention provides the following drawings for illustration:

Fig. 1 is the structural representation of embodiment 1 of electrostatic adsorption adhesive tape of the present invention;

Fig. 2 is the structural representation of protective layer;

Fig. 3 is a schematic structural view of Embodiment 2 of the electrostatic adsorption adhesive tape of the present invention;

Fig. 4 is a schematic structural view of Embodiment 3 of the electrostatic adsorption adhesive tape of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

Example 1

As shown in FIG. 1 , it is a schematic structural view of Embodiment 1 of the electrostatic adsorption adhesive tape of the present invention. The electrostatic adsorption adhesive tape of this embodiment comprises a protective layer 1 made of a flexible material, one side surface of the protective layer 1 is provided with an adhesive area 1a located in the middle, and protective layers are respectively provided on both sides or around the adhesive area 1a. In area 1b, an adhesive layer 2 made of adhesive is provided in the adhesive area 1a, and a smooth electrostatic adsorption surface is provided in the protection area 1b. The protection area 1b in this embodiment is arranged on both sides of the bonding area 1a.

Further, the adhesive layer 2 is made of industrial adhesive or medical adhesive. When the adhesive layer 2 is made of industrial adhesive, the electrostatic adsorption tape of this embodiment can be made into OPP, BOPP, EVA, foam Cotton base tape, cloth tape, kraft paper tape, PVC and fiber tape, etc. When the adhesive layer 2 is made of medical adhesive, the medical adhesive is any one of hydrocolloid, acrylic glue, silica gel, hot melt adhesive, pressure sensitive adhesive, adhesive plaster, fibrin adhesive and bone cement. Kind, at this moment, the electrostatic adsorption adhesive tape of the present embodiment can be made into all kinds of dressings, plasters, bandages, facial masks, and sticking plasters that are in contact with body surfaces or wounds, with stickiness or non-stickiness. The adhesive layer 2 in this embodiment is made of medical adhesive, and the medical adhesive in this embodiment is hydrocolloid. The protective layer in this embodiment is made of moisture-permeable polymer film, woven or non-woven fabric.

Further, the adhesive layer of this embodiment is made of medical adhesive. At this time, the electrostatic adsorption tape of this embodiment also includes a functional layer 3, and the functional layer 3 is located between the adhesive layer 2 and the protective layer 1 or between the adhesive layer 2 and the protective layer 1. Layer 2 is on the side facing away from protective layer 1, and functional layer 3 is made of medical functional treatment auxiliary materials or liquid-absorbent materials, such as hydrocolloid, foam, alginate and water-absorbent pads. The functional layer 3 of this embodiment is located between the adhesive layer 2 and the protective layer 1 .

Further, the sum of the thicknesses of the adhesive layer 2 and the functional layer 3 is less than or equal to 3 mm; the ratio of the sum of the thicknesses of the adhesive layer 2 and the functional layer 3 to the width of the protected area 1 is greater than or equal to 1:10.5. The sum of the thicknesses of the adhesive layer 2 and the functional layer 3 in this embodiment is equal to 3mm; the ratio of the sum of the thicknesses of the adhesive layer 2 and the functional layer 3 to the width of the protected area 1b is equal to 3:10.5. And when the electrostatic adsorption tape is not equipped with a functional layer, the ratio of the thickness of the adhesive layer to the width of the protected area is greater than or equal to 1:10.5.

Further, the thickness of the protection area 1b is 0.005-1 mm, the material specific gravity of the protection layer is 0.95-1.8 g/cm ³ , and the shoreA hardness is 8-80. Preferably, the thickness of the protection area 1b is 0.01-0.5 mm, the material specific gravity of the protection layer is 0.95-1.3 g/cm ³ , and the shoreA hardness is 56-80. The thickness of the protected area 1 b in this embodiment is 0.2 mm, the material specific gravity of the protective layer is 1.0 g/cm ³ , and the shoreA hardness is 75. In this embodiment, the thickness of the entire protection layer 1 is equal to the thickness of the protection area 1b. In addition, an included angle of less than or equal to 70° is formed between the protection area 1b and the surface of the adherend after electrostatic adsorption and the bonding area 1a.

The electrostatic adsorption adhesive tape of this embodiment is provided with protection areas on both sides or around the bonding area respectively. On the adherend, in this way, the protection zone electrostatically adsorbed with the adherend can effectively prevent external dust, dirt and water vapor from directly acting on the bonding surface between the adhesive layer and the adherend, which can effectively improve Adhesive stability, at the same time, the protection zone can also prevent the edge, and because the protection zone has enough width, even if the protection zone has a edge, it will not affect the bonding effect of the bonding area, further improving the bonding stability and persistence.

Example 2

As shown in FIG. 3 , it is a schematic structural view of Embodiment 2 of the electrostatic adsorption adhesive tape of the present invention. The electrostatic adsorption adhesive tape of this embodiment comprises a protective layer 1 made of a flexible material, one side surface of the protective layer 1 is provided with an adhesive area 1a located in the middle, and protective layers are respectively provided on both sides or around the adhesive area 1a. In area 1b, an adhesive layer 2 made of adhesive is provided in the adhesive area 1a, and a smooth electrostatic adsorption surface is provided in the protection area 1b. The adhesive layer of this embodiment is made of medical adhesive. At this time, the electrostatic adsorption tape of this embodiment also includes a functional layer 3 , and the functional layer 3 is located on the side of the adhesive layer 2 facing away from the protective layer 1 . The width of the functional layer 3 and the adhesive layer 2 in this embodiment are equal, of course, it can also be set that the width of the adhesive layer 2 is greater than the width of the functional layer 3, at this time, the two ends of the adhesive layer 2 respectively extend out of the functional layer 3 beyond both ends. The protection area 1b in this embodiment is set around the bonding area 1a.

Other structures of this embodiment are the same as those of Embodiment 1, and will not be repeated one by one.

Example 3

As shown in FIG. 4 , it is a schematic structural view of Embodiment 3 of the electrostatic adsorption adhesive tape of the present invention. The electrostatic adsorption adhesive tape of this embodiment comprises a protective layer 1 made of a flexible material, one side surface of the protective layer 1 is provided with an adhesive area 1a located in the middle, and protective layers are respectively provided on both sides or around the adhesive area 1a. In area 1b, an adhesive layer 2 made of adhesive is provided in the adhesive area 1a, and a smooth electrostatic adsorption surface is provided in the protection area 1b. The adhesive layer of this embodiment is made of medical adhesive. At this time, the electrostatic adsorption tape of this embodiment also includes a functional layer 3, and the functional layer 3 is located between the adhesive layer 2 and the protective layer 1, and the functional layer 3 The width is greater than the width of the adhesive layer 2, and both ends of the functional layer 3 extend out of the adhesive layer. The protection area 1b in this embodiment is arranged on both sides of the bonding area 1a.

Other structures of this embodiment are the same as those of Embodiment 1, and will not be repeated one by one.

Example 4

The preparation method of the electrostatic adsorption adhesive tape of the present embodiment comprises the steps:

a) Preparation of adhesive material: Cover the release paper on both sides of the adhesive material, and the peeling force between one layer of release paper and the adhesive is smaller than that between the other layer of release paper and the adhesive Peel force. The adhesive may only include an adhesive layer composed of an adhesive. The adhesive of this embodiment includes an adhesive layer and a functional layer that are combined together. The compounding method of the adhesive layer or the functional layer is as follows: fill the adhesive between two layers of release paper of different grammes to form an adhesive layer , filling functional materials between two layers of release papers of different grammages to form a functional layer, and combining the adhesive layer and the functional layer to form an adhesive that is covered with release papers of different grammages on both sides.

b) The first strip cutting: Cut the adhesive covering the release paper into long strips with a set width. Slitting machine or hob die-cutting machine can be used to cut the adhesive material into a set width; of course, it is also possible to use a die-cutting machine to punch holes and then transfer the adhesive material to another release sheet with different grammage by compounding. On the paper, and then at the two ends of the die-cut punching, die-cutting and punching according to the set size, and then die-cutting two to three times to obtain a long strip of adhesive material of the set size.

c) Composite: Composite multiple strips of adhesives cut into long strips on the electrostatic adsorption surface of the protective layer. There is a gap between two adjacent adhesives, and the width of the gap is equal to the width of the set protection area. double.

d) Second cutting: take the center line of the gap between two adjacent adhesive materials as the cutting line, cut the protective layer, and make a plurality of electrostatic adsorption tapes.

e) Rewinding, rewinding the prepared electrostatic adsorption tape.

Example 5

The preparation method of the electrostatic adsorption adhesive tape of the present embodiment comprises the steps:

a) Preparation of adhesive material: Cover the release paper on both sides of the adhesive material, and the peeling force between one layer of release paper and the adhesive is smaller than that between the other layer of release paper and the adhesive Peel force. The adhesive may only include an adhesive layer composed of an adhesive. The adhesive of this embodiment includes an adhesive layer and a functional layer that are combined together. The compounding method of the adhesive layer or the functional layer is as follows: fill the adhesive between two layers of release paper of different grammes to form an adhesive layer , filling functional materials between two layers of release papers of different grammages to form a functional layer, and combining the adhesive layer and the functional layer to form an adhesive that is covered with release papers of different grammages on both sides.

b) The first slicing: Cut the adhesive covering the release paper into sheets with a set geometric size. The adhesive material can be cut into a set geometric shape by using a flat die-cutting machine or a hob die-cutting machine; of course, it is also possible to use a die-cutting machine to punch holes and then transfer the adhesive material to another sheet of different grams by compounding. Heavy release paper, and then at both ends of the die-cut punching, die-cutting and punching according to the set size, and then die-cutting two to three times to obtain a sheet-like adhesive with a set geometric size.

c) Composite: Composite the sliced adhesive material array on the adhesive area of the protective layer, there is a gap between two adjacent adhesive materials, and the width of the gap is equal to twice the set protective area .

d) Second slicing: using the midline of the gap between two adjacent pieces of the adhesive as the cutting line, the protective layer is cut to make multiple pieces of electrostatic adsorption tape.

e) stacking, the prepared electrostatic adsorption tapes are stacked neatly.

The above-mentioned embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.

Claims (10)

1. A kind of 1. Electrostatic Absorption adhesive tape, it is characterised in that：Including using protective layer made of flexible material, the one of the protective layer Side surface is equipped with positioned at the adhesion zone at middle part, and the both sides of the adhesion zone or surrounding are respectively equipped with protection zone, the adhesion zone Interior be equipped with uses adhesive linkage made of adhesive, and smooth Electrostatic Absorption face is equipped with the protection zone.
2. 2. Electrostatic Absorption adhesive tape according to claim 1, it is characterised in that：The adhesive linkage is using industrial adhesive or doctor It is made of adhesive, the medical adhesive is hydrocolloid, acrylate glue, silica type, hot melt adhesive, pressure sensitive adhesive, adhesive plaster, blood fibre Any one in protein adhesive and bone cement.
3. 3. Electrostatic Absorption adhesive tape according to claim 2, it is characterised in that：The adhesive linkage uses medical adhesive system Into；

   Further include functional layer, the functional layer between the adhesive linkage and the protective layer or positioned at the adhesive linkage backwards The side of the protective layer, the functional layer are made of medical function therapeutic type auxiliary material or imbibition section bar material.
4. 4. Electrostatic Absorption adhesive tape according to claim 3, it is characterised in that：The thickness of the adhesive linkage and the functional layer The sum of be less than or equal to 3mm；The ratio between the sum of the adhesive linkage and the thickness of the functional layer and width of the protection zone are more than etc. In 1：10.5.
5. 5. Electrostatic Absorption adhesive tape according to claim 1, it is characterised in that：The thickness of the adhesive linkage and the protection zone The ratio between width be more than or equal to 1：10.5.
6. 6. according to claim 1-5 any one of them Electrostatic Absorption adhesive tapes, it is characterised in that：The thickness of the protection zone is 0.005-1mm。
7. 7. Electrostatic Absorption adhesive tape according to claim 6, it is characterised in that：The material proportion of the protective layer is 0.95- 1.8g/cm³, shoreA hardness is 8-80.
8. 8. according to claim 1-5 any one of them Electrostatic Absorption adhesive tapes, it is characterised in that：The protection zone and bonded object Surface electrostatic absorption after formed between the adhesion zone less than or equal to 70 ° of angle.
9. It is 9. a kind of such as the preparation method of claim 1-8 any one of them Electrostatic Absorption adhesive tapes, it is characterised in that：Including as follows Step：

   a）Prepare bonding material：Release liners, and wherein one layer of release liners and the viscose are covered each by the both sides of bonding material Peeling force between agent is less than the peeling force between another layer release liners and the adhesive；

   b）Cut or cut into slices for the first time：The bonding material for covering release liners is cut into the strip or setting physical dimension of setting width Sheet；

   c）It is compound：The a plurality of bonding material of slitting shape is compounded on the adhesion zone of the protective layer, adjacent two bonding materials Between be equipped with gap, and the width in gap is equal to twice of the protection sector width of setting；It is or the bonding material array of section is compound On the adhesion zone of the protective layer, gap is equipped between adjacent two panels bonding material, and the width in gap is equal to the guarantor of setting Protect area twice；

   d）Second of slitting or section：The center line in the gap between adjacent two bonding materials cuts protection as cutting line Layer, is made a plurality of Electrostatic Absorption adhesive tape；Or the center line in the gap between bonding material described in adjacent two panels cuts guarantor as cutting line Sheath, is made multi-disc Electrostatic Absorption adhesive tape；

   e）Wind or stack.
10. 10. the preparation method of Electrostatic Absorption adhesive tape according to claim 9, it is characterised in that：The bonding material includes viscous Connect layer；Or,

    The bonding material includes the adhesive linkage that is combined with each other and functional layer, and the complex method of the tack coat or functional layer is such as Under：Adhesive is filled between the release liners of two layers of different grammes per square metre and forms adhesive linkage, between the release liners of two layers of different grammes per square metre Fill functional material and form functional layer, to form both sides adhesive linkage and functional layer are combined with each other and be covered each by different grammes per square metres Release liners the bonding material.