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WO2018036671A1 - Tube de papier, matériau d'emballage, agent de revêtement et procédé de fabrication d'agent de revêtement et procédé de fabrication de tube de papier - Google Patents

Tube de papier, matériau d'emballage, agent de revêtement et procédé de fabrication d'agent de revêtement et procédé de fabrication de tube de papier Download PDF

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Publication number
WO2018036671A1
WO2018036671A1 PCT/EP2017/061753 EP2017061753W WO2018036671A1 WO 2018036671 A1 WO2018036671 A1 WO 2018036671A1 EP 2017061753 W EP2017061753 W EP 2017061753W WO 2018036671 A1 WO2018036671 A1 WO 2018036671A1
Authority
WO
WIPO (PCT)
Prior art keywords
polyvinyl alcohol
sheet member
resin
acetate resin
core
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.)
Ceased
Application number
PCT/EP2017/061753
Other languages
English (en)
Inventor
Takuo TAKEMOTO
Shinichi URAMATSU
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Paul & Co & Co KG GmbH
Nippon Paper Core Industrial Co Ltd
Original Assignee
Paul & Co & Co KG GmbH
Nippon Paper Core Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Paul & Co & Co KG GmbH, Nippon Paper Core Industrial Co Ltd filed Critical Paul & Co & Co KG GmbH
Priority to EP17727818.1A priority Critical patent/EP3500640A1/fr
Publication of WO2018036671A1 publication Critical patent/WO2018036671A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/32—Water-activated adhesive, e.g. for gummed paper
    • 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
    • C09J2400/00—Presence of inorganic and organic materials
    • C09J2400/20—Presence of organic materials
    • C09J2400/28—Presence of paper
    • C09J2400/283—Presence of paper in the substrate
    • 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
    • C09J2429/00—Presence of polyvinyl alcohol
    • 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
    • C09J2431/00—Presence of polyvinyl acetate

Definitions

  • the present invention relates to a paper tube, packing material, coating agent, a manufacturing method for the coating agent, and a manufacturing method for a paper tube.
  • a core for winding a sheet material a paper tube or the like worked into a cylindrical shape is used, and applying a pressure-sensitive adhesive in a belt shape in a direction parallel to the axis of the core on the outer peripheral surface of the core has been proposed for fixing the sheet member 5 winding initiation end part (FIG. 3 and FIG. 4 of patent document 2).
  • patent document 1 is shown a core for winding a sheet material with an inside foldback part provided on the winding initiation end part, such that a sheet member end catch ridge part with a height substantially equal to the thickness of the sheet member to be wound is provided along the entire length of the outer peripheral surface of the peripheral wall, and has formed thereon indents along the entire length for the foldback part of the sheet member to fit into in conjunctive parts of the lower end of the ridge part on the outer peripheral surface of the peripheral wall (registration of utility model claims).
  • the core of patent document 2 has a holding means coated on the surface of a cylindrical body in a belt shape parallel to the axial direction of the cylindrical body, wherein the holding means dries in the atmosphere and does not exhibit adhesive force, and by applying a liquid, exhibits adhesive force (claim 1) by applying a liquid. Also, in claim 2 of patent document 2 is shown a core wherein the holding means contains at least one from among starch, dextrin, konjak mannan, polyvinyl alcohol, vinyl acetate resin, gum arabic, and carboxymethyl cellulose, and the liquid is water.
  • Patent Document 1 Utility Model H3-8689
  • Patent Document 2 Japanese Unexamined Patent Application 2005-162468
  • patent document 2 does not show a specific bonding force about a synthetic resin suitable for forming a holding means on the core and the like. Also in patent document 2, while it does touch on synthetic resins, it does not consider the point that the viscosity is different according to the degree of polymerization, even for synthetic resins of the same composition.
  • the holding means may become sticky in a high-temperature, high-humidity environment such that the paper tubes do not easily separate, even after removing the band; there is no specific means shown in patent document 2 for dealing with these inconveniences when using a synthetic resin as the holding means.
  • the aforementioned stickiness problem is prominent.
  • the present invention focuses on a practical range of bonding force and adhesiveness while using a water-soluble polymer, and achieves a resolution to the aforementioned problems for paper tubes such as cores, of course, but also including for packing materials such as edge board.
  • the present invention also provides, on the user side, a coating agent which can freely form the holding means easily and in locations desired by the user, relative to a paper tube or packing material.
  • a ridge the thickness of the double-sided tape is created on the core surface, and leaves a ridge mark on the wound sheet member. Because of this, conventionally, in order to mitigate the ridge mark, extra sheet member in a length longer than originally necessary was wound.
  • the invention of the present invention avoids the problem of the ridge mark by making double-sided tape unnecessary, and making the unused, extra tape member unnecessary.
  • a paper tube composed of an adhesive surface for holding the end part of a sheet member by applying moisture to the surface thereof is provided, which is a core such that the sheet member is one from among a plastic film, paper, metal foil, or a non-woven cloth; wherein the adhesive surface is provided with a water-soluble polymer, the water-soluble polymer includes at least one of either a polyvinyl acetate derivative or a polyvinyl alcohol derivative, and when the sheet member is a polyethylene film of thickness 50 ⁇ , and in an environment of at least 23 degrees Celsius and 50% humidity, the adhesive surface does not exhibit adhesive force nor bonding force even when the sheet member is stuck thereon in a state of water not having been applied thereto, and the adhesive surface exhibits an bonding force such that 24 hours after applying water and sticking the sheet member thereon, it has a tensile strength of 20N/60 mm or more.
  • the present invention provides a paper tube for which, when the sheet member is a polyethylene film of thickness 50 ⁇ , and in an environment of at least 23 degrees Celsius and 50% humidity, the adhesive surface does not exhibit adhesive force nor bonding force even when the sheet member is stuck thereon in a state of water not having been applied thereto, and the adhesive surface exhibits an bonding force such that 24 hours after applying water and sticking the sheet member thereon, it has a tensile strength of 20N/60 mm or more.
  • the present invention provides a paper tube for which, when the sheet member is a polyethylene film of thickness 50 ⁇ , and in an environment of at least 23 to 50 degrees Celsius and 50%> to 98%> humidity, the adhesive surface exhibits an bonding force such that, 24 hours after applying water and sticking the sheet member thereon, it has a tensile strength of less than 120N/60 mm.
  • the present invention provides a paper tube provided with a polyvinyl acetate resin or polyvinyl alcohol as a water-soluble polymer, such that the polyvinyl acetate resin has a higher bonding force than the polyvinyl alcohol, and the polyvinyl alcohol expresses a lower adhesiveness than the polyvinyl acetate resin, and the adhesive force of the adhesiveness expressed by the polyvinyl alcohol is smaller than the polyvinyl acetate resin.
  • the present invention provides a paper tube, wherein the polyvinyl acetate resin has a viscosity of 1 to 40000 mPa » s, and the polyvinyl alcohol has a viscosity of 1 to 2000 mPa » s.
  • the present invention also provides a paper tube wherein the polyvinyl alcohol is a first polyvinyl alcohol, and expresses a lower adhesiveness than the polyvinyl acetate resin, and the water-soluble polymer contains a second polyvinyl alcohol with greater adhesive force of expressed adhesiveness, and the bonding force of the polyvinyl acetate resin is higher than that of the second polyvinyl alcohol.
  • the present invention provides a paper tube wherein the second polyvinyl alcohol has a viscosity of 3000 to 40000 mPa » s.
  • the present invention further provides a paper tube wherein at least one part of the paper tube surface comprises a coating layer, which is a coating of water- soluble polymer, and the adhesive surface is the surface of the coating layer.
  • the present invention provides a paper tube, wherein the surface thereof is provided with a first resin, which expresses lower adhesiveness than polyvinyl acetate resin and smaller adhesive force of expressed adhesiveness than polyvinyl acetate resin, a second resin, which expresses lower adhesiveness than polyvinyl acetate resin and larger adhesive force of expressed adhesiveness than the first resin, and the polyvinyl acetate resin, which has higher adhesive force the first and the second resin.
  • a first resin which expresses lower adhesiveness than polyvinyl acetate resin and smaller adhesive force of expressed adhesiveness than polyvinyl acetate resin
  • a second resin which expresses lower adhesiveness than polyvinyl acetate resin and larger adhesive force of expressed adhesiveness than the first resin
  • the polyvinyl acetate resin which has higher adhesive force the first and the second resin.
  • the present invention provides a packing material which is provided with a water-soluble polymer on the surface thereof, wherein the water-soluble polymer includes at least one of either a polyvinyl acetate derivative or a polyvinyl alcohol derivative, and in an environment of at least 23 degrees Celsius and 50% humidity, the adhesive surface does not exhibit adhesive force nor bonding force when polyethylene film is stuck thereon in a state of water not having been applied thereto, and the adhesive surface exhibits an bonding force such that 24 hours after applying water and sticking a polyethylene film of thickness 50 ⁇ thereon, it has a tensile strength of 20N/60 mm or more.
  • the water-soluble polymer includes at least one of either a polyvinyl acetate derivative or a polyvinyl alcohol derivative
  • the present invention provides a coating agent in a container for forming an adhesive surface for fixing a pasting body on an adherend by applying it to the adherend, wherein a core or packing material is the adherend, and a sheet member, packing good, or a packing box for holding a packing good is the pasting body, wherein a water-soluble polymer is the primary element, the water-soluble polymer includes at least one of either a polyvinyl acetate derivative or a polyvinyl alcohol derivative, and when the pasting body is a polyethylene film of thickness 50 ⁇ , and in an environment of at least 23 degrees Celsius and 50% humidity, the adhesive surface does not exhibit adhesive force nor bonding force when polyethylene film is stuck thereon in a state of water not having been applied thereto, and gives the adhesive surface an bonding force, such that 24 hours after applying water and sticking the pasting body thereon, it has a tensile strength of 20N/60 mm or more; a manufacturing method for the coating agent, and a manufacturing method for a paper tube, where
  • an adhesive surface which performs fixing of the pasting body to the adherend, and the adhesive surface can perform bonding of the sheet member via the simple method of applying moisture. Meanwhile, the adhesive surface does not exhibit adhesive force until moisture is applied, and prevents the adherence of foreign objects.
  • the bonded sheet member end part can easily be peeled away from the core, and the sheet member can easily be removed from the core to the very end.
  • the plastic film securely sticks to the adhesive surface formed particularly on the core, when removing the plastic film from the core, the core surface does not tear, nor does the plastic film break away leaving a part of the plastic film on the core surface, and it can be cleanly peeled away to the very end.
  • the coating agent forming the adhesive surface by having a viscosity during application of 40000 mPa » s or less, the operability (workability) of the coating agent is good, and it makes it easy to manufacture the adherend such as a core or a packing material, that is, to form an adhesive surface on the adherend.
  • the on-site workers can appropriately form an adherend on-site by applying the coating agent to a preexisting member. That is, on the user side, the present invention provides a coating agent which can respond flexibly according to the mode of the member acting as the adherend or the surrounding conditions.
  • a worker when a worker uses the coating agent liquid to form an adhesive surface on the adherend of a packing material in the aforementioned manner, or when using an adherend on which an adhesive surface has been formed from the beginning with the coating agent, in the place of use, a worker can of course apply moisture to the entirety of the adhesive surface and use the entirety of the adhesive surface for fixing, but a worker adhere moisture in a limited manner, selecting within regions to become adhesive surfaces, and cause only specific portions of the adhesive surface to be used to exhibit adhesive force and bonding force. In this manner, in the present invention, by selecting the amount and range of adhered moisture, the range for exhibiting adhesive force and bonding force can be unerringly selected.
  • a ridge the thickness of the double-sided tape is created on the core surface, but in the present invention, the adhesive surface is formed by applying a coating agent, and a ridge is not created. Also, with the double- sided tape, it is necessary to cover the adhesive surface with a release sheet until it is used so dust does not adhere; the present invention does not require such labor.
  • the adhesive surface not exhibit adhesive force nor bonding force in a state of water not having been applied thereto, and having a tensile strength of at least 20N/60 mm and less than 120N/60mm after applying water and sticking the pasting body thereon, in the atmosphere, as mentioned above, the opposing items 1) and 2) are balanced in a practical range, where 1) relating to the adherend such as a core, the pasting body such as a sheet member to be wound on the core does not stick, even at a high temperature and high humidity, and 2) the pasting body sticks to the adherend (adhesive surface) with the simple work of applying moisture.
  • a paper tube by having the surface thereof be provided with a first resin, which expresses lower adhesiveness than polyvinyl acetate resin and smaller adhesive force of expressed adhesiveness than polyvinyl acetate resin; a second resin, which has a larger adhesive force of expressed adhesiveness than the first resin; and the polyvinyl acetate resin, which has higher bonding force than the first and the second resin, the surface does not become sticky, even in a high- temperature, high-humidity environment, and by applying moisture, the adhesiveness necessary for winding from the initiation of winding of the sheet member is expressed, and bonding force after moisture is reduced following winding, as well as peelability when using the sheet member, have been secured.
  • the polyvinyl acetate resin can have viscosity 1 to 40000 mPa » s
  • the first resin can be a polyvinyl alcohol (first polyvinyl alcohol) with viscosity 1 to 3000 mPa » s
  • the second resin can be a polyvinyl alcohol (second polyvinyl alcohol) with viscosity 3000 to 40000 mPa » s.
  • the sheet member after peeling away the sheet member, the sheet member cannot be fastened again without reapplying moisture; on the other hand, by applying moisture to the resin held on the paper tube side, it is possible to use it again.
  • the present invention does not create such a ridge because it forms the adhesive surface by applying a coating agent. That is, conventionally, because a ridge mark was caused by wrinkles transferring from the ridge onto the product (sheet member) such as a film, this was handled by the user of the core by putting extra length on the sheet member, but by the implementation of the present invention, the ridge is not created through not using double-sided tape, so the transfer of wrinkles onto the sheet member is reduced, and the length of the extra length of the sheet member wound as the lower wind can be greatly reduced.
  • FIG. 1 (A) is a overall simplified perspective view drawing of the adherend (core) according to an embodiment of the present invention, (B) is an overall simplified perspective view drawing illustrating a modification of the adherend (core) of (A), and (C) is an overall simplified perspective view drawing illustrating a modification of the adherend (core) of (B).
  • FIG. 2 (A) is a perspective view drawing of the entirety of the packing good in another embodiment, where the adherend is a packing material; (B) is a diagonal view drawing of the entire packing good illustrating a modification of (A); (C) is a perspective view drawing of the entire packing good illustrating another
  • FIG. 1 An overall simplified side view drawing of FIG. 1.
  • FIG. 3: (A) to (C) are descriptive drawings of the evaluation method for peelability of the present invention.
  • FIG. 4 A perspective view drawing illustrating the coating agent in a state of being stored in a coating agent container when implementing the present invention as a coating agent.
  • FIG. 5 (A) is a partially expanded simplified cross-sectional drawing of the paper tube (core 1) with the surface made only of paper; (B) is a partially expanded simplified cross-sectional drawing of the paper tube (core 1) with a non-water-soluble resin impregnated into the surface; (C) and (D) are partially expanded simplified cross- sectional drawings illustrating the paper tube surface of (A) in a state of having been coated by the coating agent according to the present invention; (E) is a partially expanded simplified cross-sectional drawing illustrating the paper tube of (A) to which the coating agent according to the present invention has been applied and the resin 20 impregnated in the paper tube surface; (F) is a partially expanded simplified cross-sectional drawing illustrating the paper tube of (B) to which the coating agent according to the present invention has been applied and the resin 20 impregnated in the paper tube surface.
  • FIG. 6 (A) is a front- view drawing illustrating the arrangement of the base sheet and PE film on the tensile strength tester, which is No. 6 on table 4 to table 6; (B) is a side-view drawing of (A), and (C) is a simplified side-view drawing illustrating the condition of polyethylene film wound on the paper tube being peeled away.
  • this embodiment has a core as an adherend 1 (called the core 1 below, as necessary) and a sheet member as the pasted body to be fixed onto the adherend 1.
  • the core 1 is a cylindrical core member for winding a sheet member.
  • the core 1 is a paper tube.
  • the entire peripheral surface of the core 1 is an adhesive surface 2 which fixes the sheet member.
  • the sheet member may be a plastic film, paper, metal foil, fabric, or a non- woven fabric.
  • a plastic film as the sheet member.
  • the adhesive surface 2 does not exhibit adhesive force when moisture is not adhered, and does not adhere other things including the sheet member and dust. Also, the adhesive surface 2 exhibits adhesive force by adhering moisture thereto, and fixes the end part of the sheet member to be wound on the core 1 to the core 1.
  • the adhesive surface 2 is an applied surface formed by applying the coating agent. After the coating agent is applied, the adhesive surface 2 dries as the moisture in the coating agent evaporates from the adhesive surface 2, or permeates into the paper tube. After drying, unless moisture is not applied to the adhesive surface 2, the expression of the adhesiveness is inhibited, and the adhesive surface 2 does not become sticky. When winding plastic film, the adhesiveness can be expressed by applying moisture to the dried adhesive surface 2.
  • the end part of the plastic film can be stuck to the adhesive surface 2, and winding can immediately be initiated. After winding, if the adhesive surface 2 dries again, the plastic film is bonded to the adhesive surface 2 by the bonding force of the adhesive surface 2.
  • the coating agent contains a water-soluble polymer as the primary element, and does not exceed a viscosity of 40000 mPa » s.
  • the viscosity of the resin should not exceed 40000 mPa » s.
  • the water-soluble polymer is composed of a plurality of types of resins, the viscosity of each resin should not exceed 40000 mPa » s. If the water-soluble polymer exceeds 40000 mPa » s, the present invention has confirmed that it becomes extremely difficult to apply the coating agent, and based on this knowledge, the range of the viscosity of the coating agent is set to not exceed 40000 mPa » s. However, if it can be used as not exceeding 40000 mPa » s via dilution during work, the resin itself may have a viscosity exceeding 40000 mPa » s.
  • the coating agent can be formed containing at least one from among a polyvinyl acetate derivative and a polyvinyl alcohol derivative as the water-soluble polymer.
  • the water-soluble polymer prefferably contains a polyvinyl acetate resin as a polyvinyl acetate derivative and polyvinyl alcohol as a polyvinyl alcohol derivative.
  • the water-soluble polymer it is particularly preferable to contain the following first resin, which is a polyvinyl alcohol derivative, and the following second resin, which is a polyvinyl alcohol derivative.
  • the first resin expresses a lower adhesiveness than the polyvinyl acetate resin, and the adhesive force of the expressed adhesiveness is smaller than that of polyvinyl acetate resin. Further, the second resin has a larger adhesive force of expressed adhesiveness than the resin of the first resin.
  • the polyvinyl acetate resin has higher bonding force than the first and second resins above.
  • a polyvinyl alcohol may be used for both the first resin and the second resin.
  • the polyvinyl alcohol which is the first resin is called the first polyvinyl alcohol
  • the polyvinyl alcohol which is the second resin is called the second polyvinyl alcohol.
  • the first polyvinyl alcohol is called polyvinyl alcohol A
  • the second polyvinyl alcohol is called polyvinyl alcohol B, as needed.
  • the water-soluble polymer may be implemented composed only of polyvinyl alcohol A (first resin) without containing polyvinyl acetate resin nor polyvinyl alcohol B (second resin).
  • each resin that can be used as a coating agent when the concentration is 7wt%, that is, 7 parts by weight of solid resin is diluted with 93 parts by weight of water, the resin temperature is adjusted to 23 degrees Celsius, and measuring the viscosity under conditions of 60 rpm using a BL-type viscometer, those with a property of 10 mPa » s for a polyvinyl acetate resin, those with a property of 67.5 mPa » s for the polyvinyl alcohol A, and those with a property of 107.5 mPa » s for the polyvinyl alcohol B could be used.
  • the polyvinyl acetate resin because the expression of adhesiveness is high and the adhesive force of the expressed adhesiveness is high, for only the polyvinyl acetate resin with the aforementioned properties, a small amount of moisture causes it to become sticky. Further, when bundling a plurality of cores with a band for transport or safekeeping in a high-temperature, high-humidity environment, there is a risk of the cores sticking to each other and not separating, even when the band is released.
  • the polyvinyl acetate resin allows for immediate initiation of winding a sheet member by applying moisture to the adhesive surface and sticking the sheet member to the core, due to the adhesive force.
  • the viscosity is lower than that of polyvinyl acetate resin, the expression of adhesiveness is lower, and the adhesive force of the expressed adhesiveness is smaller than polyvinyl acetate resin. That is, compared to the polyvinyl acetate resin, which is sensitive to moisture, the polyvinyl alcohol A is not sensitive to moisture. Because of this, by using the polyvinyl acetate resin and the polyvinyl alcohol A together, the adhesive surface 2 can be made hard to become sticky, even in a high-temperature high-humidity environment.
  • the polyvinyl acetate resin expresses adhesiveness with a smaller amount of moisture than the polyvinyl alcohol A and the polyvinyl alcohol B. That is, regarding the expression of adhesiveness due to moisture contained in a high- temperature, high-humidity atmosphere, the polyvinyl acetate resin is higher than the polyvinyl alcohol A. The bonding force of the polyvinyl acetate resin is stronger than the polyvinyl alcohol A and the polyvinyl alcohol B.
  • the adhesive force of the polyvinyl alcohol A is lower than that of the polyvinyl acetate resin.
  • the polyvinyl alcohol B is higher than the polyvinyl acetate resin
  • that of the polyvinyl acetate resin is higher than the polyvinyl alcohol A.
  • the polyvinyl alcohol resin alone it has excellent (1) initial adhesiveness needed to initiate winding of the sheet member, and (2) bonding force relative to the sheet member, but is inferior to the polyvinyl alcohol A in (3) non- adhesiveness due to moisture in a high-temperature, high-humidity atmosphere, because it expresses high adhesiveness with a small amount of moisture.
  • (3) non-adhesiveness can be improved by adding the polyvinyl alcohol A to the coating agent liquid and reducing the relative amount occupied by the polyvinyl acetate resin.
  • the expressed adhesiveness of the polyvinyl alcohol A due to moisture in the atmosphere, is lower than that of the polyvinyl acetate resin, so (3) non-adhesiveness is improved, but the adhesive force expressed when applying water of the polyvinyl acetate resin is higher than that of the polyvinyl alcohol A, so the (1) initial adhesiveness declines.
  • the adhesive force expressed due to applied water is highest for the polyvinyl alcohol B, the polyvinyl acetate resin is next strongest, and the polyvinyl alcohol A is the weakest; because of this, initial adhesiveness can be improved by using both the polyvinyl acetate resin and the polyvinyl alcohol B, or using all three of the polyvinyl acetate resin, the polyvinyl alcohol A, and the polyvinyl alcohol B; these are thought to be preferable in regard to the conditions (1) (2) (3).
  • the combination ratio of the polyvinyl alcohol B is increased in a combination of both the polyvinyl acetate resin and the polyvinyl alcohol B or a combination of the three of the polyvinyl acetate resin, the polyvinyl alcohol A, and the polyvinyl alcohol B, to where it exceeds 40000mPa » s and the work of coating the surface of the paper tube becomes difficult to perform, the workability of the coating is compromised.
  • the coating agent when it is necessary to consider the workability of the coating, it is desirable to compound the three of the polyvinyl acetate resin, the polyvinyl alcohol A, and the polyvinyl alcohol B into the coating agent.
  • the coating agent if it is a combination of the polyvinyl acetate resin, the polyvinyl alcohol A, and the polyvinyl alcohol B, and after it is applied to the adherend and dried, when it is in a state of moisture not having been proactively applied thereto, even in a high-temperature, high-humidity atmosphere, conditions of it adhering to other things can be practically inhibited, and operability (workability) can be secured.
  • the preferable resin for use as a coating agent it is as described above, but when not used in a high-temperature, high-humidity
  • the coating agent may be implemented excluding any polyvinyl alcohol, including polyvinyl acetate resin.
  • the coating agent may be implemented including polyvinyl alcohol A and excluding polyvinyl alcohols aside from polyvinyl acetate resin or polyalcohol A.
  • the resin of 20 to 100 parts by weight polyvinyl alcohol A mixed relative to 80 to 0 parts by weight of polyvinyl acetate resin normally, such as an environment of 23 degrees Celsius and 50% humidity, and even in a high-temperature, high-humidity environment such as 50 degrees Celsius and 98%> humidity, unless moisture is applied, it will not be sticky, and will exhibit sufficient adhesive force when water is applied.
  • polyvinyl acetate resin and polyvinyl alcohol A may be used.
  • polyvinyl acetate resin is always combined (never 0 parts) with polyvinyl alcohol A.
  • polyvinyl alcohol A relating to a total 99 to 80 parts by weight of polyvinyl acetate resin and polyvinyl alcohol A, by adding 1 to 20 parts polyvinyl alcohol B (totaling 100 parts by weight), stickiness further increases, and adhesive force improves.
  • polyvinyl acetate resin just one type in a range of 1 mPa » s to 40000 mPa » s may be used, or other than this, a plurality of types of polyvinyl acetate resin with different viscosities may be used, assuming that the viscosity after combining is in the range of lmPa » s to 40000 mPa » s.
  • the viscosity of the polyvinyl acetate resin should be adjusted to 1 mPa » s to 40000 mPa » s, then the objective coating agent may be created.
  • just one type with a viscosity in a range of 1 mPa » s to 3000 mPa » s may be used, or other than this, a plurality of types of polyvinyl alcohol A with different viscosities may be used, assuming that the viscosity after combining is in the range of 1 mPa » s to 3000 mPa » s.
  • polyvinyl alcohol B just one type with a viscosity in a range of 3000 mPa » s to 40000 mPa » s may be used, or other than this, a plurality of types of polyvinyl alcohol B with different viscosities may be used, assuming that the viscosity after combining is in the range of 3000 mPa » s to 40000 mPa » s.
  • the adhesive surface of the paper tube When the sheet member is a polyethylene film of thickness 50 ⁇ , and in an environment of 23 to 50 degrees Celsius and 50%> to 98%> humidity, it is preferable for the adhesive surface of the paper tube to have a tensile strength of less than 5N/60 mm in a state of not having had moisture applied thereto, and has a bonding force such that 24 hours after applying moisture and sticking the sheet member thereon, it has a tensile strength of at least 20N/60 mm and less than 200N/60 mm.
  • the adhesive surface of the paper tube when the sheet member is a polyethylene film of thickness 50 um, and in an environment of at least 23 degrees Celsius and 50% humidity, it is preferable for the adhesive surface of the paper tube to have a tensile strength of less than 5N/60 mm in a state of not having had moisture applied thereto, and has a bonding force such that 24 hours after applying moisture and sticking the sheet member thereon, it has a tensile strength of at least 20N/60 mm and less than 120N/60 mm.
  • the adhesive surface of the paper tube when the sheet member is a polyethylene film of thickness 50 ⁇ , and in an environment of 50 degrees Celsius and 98% humidity, it is preferable for the adhesive surface of the paper tube to have a tensile strength of less than 5N/60 mm in a state of not having had moisture applied thereto, and has a bonding force such that 24 hours after applying moisture and sticking the sheet member thereon, it has a tensile strength of at least 20N/60 mm and less than 120N/60 mm.
  • the polyethylene film is a standard which shows adhesive force as tensile strength, and the sheet member is not limited to the polyethylene film.
  • the bonding force of the adhesive surface was described with a polyethylene film of thickness 50 ⁇ as the standard.
  • the range of tensile strength may naturally differ from above if the sheet member is a plastic film other than polyethylene film and the conditions other than the material of the sheet member are the same as above.
  • the range of the tensile strength may differ if only the thickness of the polyethylene film which is the standard differs.
  • a strong film such as polypropylene (PP) as a sheet member
  • PP polypropylene
  • the viscosities above are important in the selection of resin used for the coating agent. Even with the same viscosity, the concentration may differ based on a difference of the degree of polymerization of the resin. Thus, regarding polyvinyl acetate derivative and polyvinyl alcohol derivative, even if its viscosity exceeds 40000 mPa » s, it is included in the present invention if it can be diluted with moisture such as water or the like so the viscosity does not exceed 40000 mPa » s.
  • the viscosity of the coating agent liquid is 5000 to 20000 mPa » s, and is more preferably below 5000 mPa » s.
  • each resin is described in detail, for the case when using the three types of polyvinyl acetate resin, polyvinyl alcohol A, and polyvinyl alcohol B.
  • the largest range of the viscosity of the polyvinyl alcohol A, which has relatively low viscosity and is used to reduce viscosity, is 1 mPa » s to 3000 mPa » s
  • a preferable range is 1 mPa » s to 1500 mPa » s
  • a more preferable range is 1 mPa » s to 500 mPa » s.
  • Polyvinyl acetate resin (solid): water 5 parts by weight: 95 parts by weight to 95 parts by weight: 5 parts by weight, and the following range is more preferable.
  • Polyvinyl acetate resin (solid): water 20 parts by weight: 80 parts by weight to 80 parts by weight: 20 parts by weight
  • the following range is particularly preferable for the concentration of polyvinyl acetate resin.
  • Polyvinyl acetate resin (solid): water 40 parts by weight: 60 parts by weight to 60 parts by weight: 40 parts by weight
  • concentration of polyvinyl alcohol A the following range is even more preferable.
  • concentration of polyvinyl alcohol B the following range is particularly more preferable.
  • the present invention controls the expression of adhesiveness, makes it possible to secure the adhesive force and bonding force necessary at the time of expressing adhesiveness, and further actualizes good peelability for cleanly peeling away the plastic film after bonding.
  • the paper tube (core 1) surface is formed only of a paper material 11 , but the paper tube surface may be provided with a non-water-soluble resin 12, as illustrated in FIG. 5 (B).
  • the non-water-soluble resin 12 it does not normally completely cover the paper tube surface, that is, does not form a layer to coat the paper tube surface, but is impregnated into the skin of the paper, and as illustrated in FIG. 5 (B), is in a state such that microscopic parts of the skin of the paper are exposed here and there.
  • FIG. 5 (A) concave-convex undulation
  • the non- water-soluble resin 12 enters the concave portions of the skin, and the convex portions of the skin are not covered by the non-water-soluble resin, and the paper material 11 is exposed.
  • the adhesive surface 2 may be in a smooth state due to the plastic film, which has a smooth surface as illustrated in FIG. 5 (D). In this case, even if the adhesive surface 2 is smooth, it can be reused if it secures the expression of an appropriate adhesiveness and the adhesive force, bonding force, and peelability thereof.
  • the adhesive surface 2 may be implemented as illustrated in FIG. 5 (E) or FIG. 5 (F).
  • the resin 20 which forms the adhesive surface 2 when applying the coating agent to the paper tube of FIG. 5 (A), the surface of which is formed only of paper material it may be such that it impregnates the skin of the paper, and does not completely coat the paper tube surface, that is, form a layer which coats the paper tube surface, in the same manner as the non- water-soluble resin 12 of the paper tube of FIG. 5 (B). That is, the resin 20 which forms the adhesive surface 2 may enter the concave portions of the skin, and not cover the convex portions of the skin with the resin 20, exposing the paper material (FIG. 5 (E)).
  • the resin 20 which forms the adhesive surface 2 when applying the coating agent to the paper tube of FIG. 5 (B), which has been impregnated with the non-water-soluble resin it may be in a state such that the resin 20 enters the concave portions with the non- water-soluble resin 12, and exposes the paper material 11 in the convex portions (FIG. 5 (F)).
  • the coating agent having the resin 20 on the surface of an adherend such as a paper tube using, for example, a container 3 as illustrated in FIG. 4, after moisture has been reduced by the evaporation or volatilization of the moisture following application or the moisture permeating the interior of the paper tube, the resin 20 (resin solid) is provided to the paper tube in the state illustrated in FIG. 5 (C) to (F). [Embodiment] [0038]
  • test results are shown in Table 5 to Table 8, and the evaluation method is shown for each sample in Table 1 to Table 4.
  • paper tubes which are the core 1 of dimensions used in Table 1 were bundled with three PP (polypropylene) bands r, and after putting them in the set conditions in a thermo-hygrostat for 48 hours, and evaluated by whether the paper tubes were stuck to each other (FIG. 3 (C)) or not (FIG. 3 (B)) in the moment the bands r were cut with scissors h.
  • PP polypropylene
  • the viscosity of the resin was measured at 23 degrees Celsius with a BL-type viscometer at 60rpm and evaluted.
  • Test item No. 1 of Table 4 Is for adhesive force as described above; test item No. 2 of Table 4 Is the surface properties in the natural state, that is, after 48 hours in an atmosphere of 23 degrees Celsius and 50% humidity; Test item No. 3 of Table 4 is the surface property in high-temperature and high-humidity, that is, in an atmosphere of 50 degrees Celsius and 98% humidity.
  • the sample a-1 has viscosity 8300 mPa » s at 23 degrees Celsius, and test item No. 5 of Table 4 is peelability, as described above.
  • the surface properties after 48 hours in an atmosphere of 23 degrees Celsius and 50%> humidity of test item No. 2 are the result after 48 hours had passed in a thermo-hygrostat at each set temperature and humidity.
  • the tensile strength of No. 6 is the result obtained from the following tensile test. That is, the tensile test had as test materials a base sheet pi (paper) of thickness 0.50 mm used on the surface of the paper tube as the adherend, and PE
  • the size of the base sheet pi is vertical width wl (tensile direction width) 140 mm and horizontal width w2 of 70 mm; the size of the PE film p3 is vertical width w3 (tensile direction width) 200 mm and horizontal width w4 of 70 mm.
  • the size of the adhesive surface 2 of the base sheet pi that is, the bonding surface p2, is vertical width (tensile direction stacked width w5) 60 mm and horizontal width of 70 mm.
  • the coating agent was applied relative to the base sheet pi over 60 mm of the vertical direction (tensile direction) on the entire horizontal width relative to the base sheet pi with a bar coater #18 and application amount 40 g/square meter, and was made a state such that the PE film p3 was stacked on the bonding surface p2 of the base sheet pi .
  • the testing method is
  • the PE film p3 is stacked on the bonding surface p2 of the base sheet pi as described above, and left to dry for one day (24 hours).
  • thermo-hygrostat The air is conditioned to 23 degrees Celsius and 50% humidity in a thermo-hygrostat.
  • Measurement is performed until it peels away at the bonding surface p2 or the PE film breaks.
  • the evaluation result of the sample a-1 which is 100 parts polyvinyl acetate resin, is "excellent” for adhesive force of No. 1, "excellent” for surface properties in the natural state of No. 2, “fail” for surface properties in high-temperature and high-humidity of No. 3, "good” for workability of No. 4 due to the aforementioned viscosity of 8300 mPa » s, and o for the outer appearance check regarding peelability of No. 5.
  • strength (tensile strength) of No. 6 for sample a-1 The PE film p3 broke (MF) at or over 120N/60 mm, and could not be measured.
  • Table 5 the evaluations for the same test items No. 1 to No. 6 as Table 4 were performed for six samples b-1 to b-6, which had an adhesive surface 2 formed thereon with a coating agent created by combining two types of resin, polyvinyl acetate resin and polyvinyl alcohol A, in two differing combination ratios (weight). Note that for comparison, the sample a-1 of Table 4 is jointly written.
  • Sample b-1 is 90 parts by weight polyvinyl acetate resin relative to 10 parts by weight polyvinyl alcohol A (total 100 parts by weight)
  • sample b-2 is 80 parts by weight polyvinyl acetate resin relative to 20 parts by weight polyvinyl alcohol A (total 100 parts by weight)
  • sample b-3 is 60 parts by weight polyvinyl acetate resin relative to 40 parts by weight polyvinyl alcohol A (total 100 parts by weight)
  • sample b-4 is 40 parts by weight polyvinyl acetate resin relative to 60 parts by weight polyvinyl alcohol A (total 100 parts by weight)
  • sample b-5 is 20 parts by weight polyvinyl acetate resin relative to 80 parts by weight polyvinyl alcohol A (total 100 parts by weight)
  • sample b-6 is 10 parts by weight polyvinyl acetate resin relative to 90 parts by weight polyvinyl alcohol A (total 100 parts by weight).
  • sample b-7 is 100 parts by weight polyvinyl alcohol A (0 parts by weight polyvinyl acetate resin).
  • the evaluation result of the sample b-1 is "excellent” for No. 1 (adhesive force) and No. 2 (surface properties in natural state), “fail” for No. 3 (surface properties in high-temperature, high-humidity), “good” for No. 4, workability; And “o” for No. 5 (Peelability).
  • Concerning strength (tensile strength) of No. 6 for sample b-1 The PE film p3 broke (MF) at or over 120N/60 mm, and could not be measured.
  • Sample b-2 is No. 1 (adhesive force), No. 2 (surface properties in natural state), and No. 3 (surface properties in high-temperature, high-humidity),
  • Sample b-3 is No. 1 (adhesive force), "excellent” for No. 2 (surface properties in natural state), No. 3 (surface properties in high-temperature, high- humidity), and for workability of No. 4, And “o” for No. 5 (Peelability). Concerning strength (tensile strength) of No. 6 for sample b-3, The PE film p3 broke (MF) at or over 120N/60 mm, and could not be measured.
  • Sample b-4 is No. 1 (adhesive force), "excellent” for No. 2 (surface properties in natural state), No. 3 (surface properties in high-temperature, high-humidity), and for workability of No. 4, And “o” for No. 5 (Peelability). Concerning strength (tensile strength) of No. 6 for sample b-4, The bonding surface broke (AF) at 87N/60 mm.
  • Sample b-5 is "good” for No. 1 (adhesive force), “excellent” for No. 2 (surface properties in natural state), No. 3 (surface properties in high-temperature, high- humidity), and for workability of No. 4, And “o” for No. 5 (Peelability). Concerning strength (tensile strength) of No. 6 for sample b-5, The bonding surface broke (AF) at 74N/60 mm.
  • Sample b-6 is "good” for No. 1 (adhesive force), “excellent” for No. 2 (surface properties in natural state), No. 3 (surface properties in high-temperature, high-humidity), and for workability of No. 4, And “o” for No. 5 (Peelability). Concerning strength (tensile strength) of No. 6 for sample b-6, The bonding surface broke (AF) at 69N/60 mm.
  • Sample b-7 is "passable” for No. 1 (adhesive force), "excellent” for No. 2 (surface properties in natural state), No. 3 (surface properties in high-temperature, high-humidity), and for workability of No. 4, And “o” for No. 5 (Peelability).
  • the adherend 1 using a coating agent of 90 parts by weight polyvinyl acetate resin relative to 10 parts by weight polyvinyl alcohol A can be used, as long as it is not used in a high-temperature, high-humidity environment like the conditions shown in Table 5. Also from the results of the sample b-1, the workability at 23 degrees Celsius is "good", and withstands practical use.
  • Table 6 the evaluations for the same test items No. 1 to No. 5 as Table 4 and Table 5 were performed for three samples c-1 to c-3, which had an adhesive surface 2 formed thereon with a coating agent created by combining three types of resin, polyvinyl acetate resin, polyvinyl alcohol A, and polyvinyl alcohol B in two differing combination ratios (by weight). Note that, for comparison, the data of sample b-1 of Table 5 is jointly written in Table 6.
  • Sample c-1 is 85 parts by weight polyvinyl acetate resin, 10 parts by weight polyvinyl alcohol A, and 5 parts by weight polyvinyl alcohol B (total 100 parts by weight); sample c-2 is 70 parts by weight polyvinyl acetate resin, 10 parts by weight polyvinyl alcohol A, and 20 parts by weight polyvinyl alcohol B (total 100 parts by weight); sample c-1 is 65 parts by weight polyvinyl acetate resin, 10 parts by weight polyvinyl alcohol A, and 25 parts by weight polyvinyl alcohol B (total 100 parts by weight).
  • the sample c-1 is "excellent” for No. 1 (adhesive force), “excellent” for No. 2 (surface properties in natural state) and No. 3 (surface properties in high-temperature, high-humidity), “good” for No. 4 (workability); and “o” for No. 5 (Peelability).
  • the sample c-2 is “superior” for No. 1 (adhesive force), “excellent” for No. 2 and No. 3 (surface properties), “good” for No. 4 (workability); and “o” for No. 5 (Peelability).
  • the sample c-2 is “superior” for No. 1 (adhesive force), “excellent” for No. 2 and No. 3 (surface properties), “fail” for No. 4
  • adhesive force can be improved by combining polyvinyl acetate resin and polyvinyl alcohol A together for 95 to 80 parts by weight relative to 5 to 20 parts by weight polyvinyl alcohol B (total 100 parts by weight).
  • adhesive force can be improved by combining polyvinyl acetate resin and polyvinyl alcohol A together for 100 to 80 parts by weight relative to 0 to 20 parts by weight polyvinyl alcohol B (total 100 parts by weight).
  • Table 7 the evaluations for the same test items No. 1 to No. 5 as Table 5 and Table 6 were performed for three samples d-1 to d-3, which had an adhesive surface 2 formed thereon with a coating agent created by combining three types of resin, polyvinyl acetate resin, polyvinyl alcohol A, and polyvinyl alcohol D in two differing combination ratios (by weight). Note that, for comparison, the data of sample b-1 of Table 5 is jointly written in Table 7.
  • a polyalcohol D with viscosity 45000 mPa » s was used.
  • sample d-1 is “superior” for No. 1 (adhesive force), “excellent” for No. 2 (surface properties in natural state) and No. 3 (surface properties in high-temperature, high-humidity), “fail” for No. 4 (workability); and “o” for No. 5 (Peelability).
  • the sample d-2 is “superior” for No. 1 (adhesive force), “excellent” for No. 2 and No. 3 (surface properties), “fail” for No. 4 (workability); and “o” for No. 5 (Peelability).
  • the sample d-3 is “superior” for No. 1 (adhesive force), “excellent” for No. 2 and No. 3 (surface properties), “fail” for No. 4
  • wave quality and surface roughness improve by applying (coating) a water-repellent resin as a coating agent, then applying (coating) an adhesive resin.
  • any one resin from among acrylic resins, acrylic-styrene resins, and polyurethane resins may be used, and further, these resins may be used with two or more types mixed together.
  • the adhesive resin the coating agent according to the present invention may be used.
  • Evaluation item No. 1 is average roughness (Ra) of the sample surface
  • No. 2 is the maximum height (Ry) of the roughness curve of the sample
  • No. 3 is the maximum height (Rmax) of the cross-section curve of the sample
  • No. 4 is the waviness (Wt) of the sample.
  • Seam gap is the gap where the belt-shaped paper material connects, which is created by rolling the belt-shaped paper material into a spiral shape to make a tubular body, when forming the paper tube.
  • Sample e-1 and e-2 from Table 8 are portions which do not have a seam gap, and sample e-1 is an example of being coated only with water-repellent resin;
  • Sample e-2 is an example of an adherend 1 being coated with water-repellent resin and adhesive resin, and acrylic resin and adhesive resin were coated on the adherend 1.
  • An adhesive resin with the same nature as the sample c-2 in Table 6 was used.
  • Sample e-3 and e-4 from Table 8 are portions which have a seam gap, and sample e-3 is an example of being coated only with water-repellent resin; acrylic resin was coated on the adherend 1.
  • Sample e-4 is an example of being coated with water-repellent resin and adhesive resin, and acrylic resin and adhesive resin were coated on the adherend 1.
  • An adhesive resin with the same nature as the sample c-2 in Table 6 was used for sample e-4 as well.
  • sample e-1 was 2.36 ⁇ concerning evaluation item No. 1 (average roughness), 15. 14.37 ⁇ for No. 2 (maximum height of roughness curve), 43.73 ⁇ For No. 3 (maximum height of cross-section curve), and 23.41 ⁇ For No. 4 (waviness).
  • Sample e-2 was 1.57 ⁇ concerning evaluation item No. 1 (average roughness), 10 8.87 ⁇ for No. 2 (maximum height of roughness curve), 25.10 ⁇ (maximum height of roughness curve), 14.95 ⁇ For No. 4 (waviness).
  • Sample e-3 was 2.36 ⁇ concerning evaluation item No. 1 (average roughness), 15. .37 ⁇ ⁇ ⁇ . 2 (maximum height of roughness curve), 50.20 ⁇ ⁇ ⁇ . 3 (maximum height of cross-section curve), and 31.11 ⁇ For No. 4 (waviness).
  • sample e-4 was 1.57 ⁇ concerning evaluation item No. 1 (average roughness), 10.10 ⁇ for No. 2 (maximum height of roughness curve), 48.29 ⁇ For No. 3 (maximum height of cross-section curve), and 30.08 ⁇ For No. 4 (waviness).
  • the value ( ⁇ ) of roughness is smaller for all items No. 1 to No. 4 for the sample e-2 which was coated with both water-repellent resin and adhesive resin, in two differing combination ratios which was coated with only water-repellent resin.
  • the value ( ⁇ ) of roughness is smaller for all items No. 1 to No. 4 for the sample e-4 which was coated with both water-repellent resin and adhesive resin, in two differing combination ratios which was coated with only water-repellent resin.
  • the inventors of the present application visually inspected the surfaces of each PE film and core 1 by grabbing and pulling a PE film (sheet member 10) in the reverse direction of winding and peeling off the PE film, one week after being stuck to the adhesive surface and being wound on the core 1, as illustrated in FIG. 6 (C).
  • the coating agent forming the adhesive surface is the same as the sample c-2 (Table 6).
  • the PE film could be cleanly removed without breaking, and it was confirmed that the resin of the adhesive surface did not adhere to the PE film side.
  • an adhesive surface 2 was formed on the entirety of the outer periphery (the side of the cylinder) of the core 1.
  • the adhesive surface 2 may be implemented as a striped shape extending in the axial direction, that is, the thrust direction of the core 1 , on the outer periphery surface.
  • the adhesive surface 2 may be formed in straight lines over the entire width of the axial direction of the core 1, on the outer periphery of the core 1. That is, the adhesive surface 2 may be implemented as fixing only the part near the end part of the sheet member to the core 1, by the mode illustrated in FIG. 1 (B).
  • each adhesive surface 2 extends parallel to each other along the axial direction, leaving a space in between.
  • the adhesive surface 2 may be implemented as a region of broken lines provided intermittently, or interspersed.
  • the paper tube of the embodiment described above was a round paper tube, that is, a circular tube, but the paper tube may be implemented as a rectangular paper tube.
  • the adherend 1 used the adherend 1 as a core 1, but the adherend 1 is not limited to the core 1.
  • the adherend 1 may be implemented as a packing material (called the packing material 1 below, as needed).
  • the present invention may be implemented as the packing material 1 concerning an edge board.
  • the adhesive surface 2 is formed on the surface opposing the packed good of the edge board. When a plurality of packed goods 1 are packed together, they may be fastened with a band, but in the present invention, the adhesive surface 2 of the edge board may have moisture caused to adhere thereto with a spray bottle or the like before fastening with a band, causing it to exhibit adhesive force, thereby allowing the packed goods to be stacked and fixed.
  • a package which fastens with a band using an edge board required a plurality of workers. Specifically, part of the workers would hold the edge board in a state of being against a plurality of packed goods to be put into one bundle, and meanwhile, other workers needed to fasten with a band or rope the packed goods being held down.
  • the packing material according to the present invention allows the fastening with bands or ropes to be complete with one worker because the packing goods do not come apart without workers holding them, by causing moisture to adhere to the edge board and pressing it against the packing goods.
  • the adherend 1 is a packing material is illustrated in FIG. 2 (A) to (F).
  • the packing material 1 is a packing material such as an edge board or cushioning material for protecting corners and edges of stacked loads.
  • the example illustrated in FIG. 2 (A) has the packed load (packed goods k) as a plurality of boxes.
  • the adherend 1 is a substantially L-shaped plank disposed in the corner (edge) of a plurality of stacked packing goods, and the surface on the inner side of the L (valley side) is the adhesive surface 2.
  • the adherend 1 which is the packing material, can be fixed to the packing goods k. This allows a worker to fasten a fastening belt m such as a band without holding the packing material (adherend 1) nor the stacked packing goods k, and without causing a load collapse.
  • the example illustrated in FIG. 2 (A) showed as an example stacking a plurality of substantially rectangular parallelepiped packed goods k which could be collected into a rectangular parallelepiped-shaped gathered good, wherein the adherend 1 which was the packing material was disposed and fixed on each edge of the rectangular parallelepiped represented by the gathered good.
  • the packed good k is composed of three masses, upper tier kl, middle tier k2, and lower tier k3, from the top.
  • Spaces are opened between each mass.
  • each mass is a gathered good of a stack of a plurality of thin plates or a plurality of sheet-shaped members, and the substantially L- shaped-cross-section packing material is fixed to every mass as an adherend 1.
  • the fastening belt m such as a band can be put on after fixing the thin plates composing the masses in a collected state via the packing material.
  • the adherend 1 is fixed to the corner of the gathered body formed of the stacking of the bags; as illustrated in FIG. 2 (D) the adherend 1 can be fixed to the upper edge of a stack of a plurality of drum-shaped loads on a palette g.
  • FIG. 2 (E) it may have the adherend 1 fixed and formed in a circle shape as a cushioning material or protective material on the end of both bottom surfaces of a member wound into a roll shape representing a circular pillar.
  • FIG. 2 (F) it may be implemented by fixing the adherend 1 in the corner part of the interior of a packing box n such as a cardboard box, as a strengthening material, cushioning material or a protective member.
  • the adherend 1 is a core
  • it may be provided storing the coating agent t in a container 3 illustrated in FIG. 4, and the user may apply the coating agent t to a core or packing material at the work site and use it as an adherend 1.
  • the packing material which may be the adherend 1 from the beginning, to which the coating agent has been applied, to the user.
  • FIG. 4, 5 illustrates the lid of the container 3
  • 4 illustrates a lead part provided on the mouth of the container 3 made out of felt, cloth, or a net-shaped member which can absorb the coating agent t from within the container 3 and apply it.
  • the lead part 4 can apply the coating agent t from within the container 3 by pressing it against the member acting as the adherend 1.
  • this does not limit applying the coating agent t using a known applicator other than the container 3 illustrated in FIG. 4, such as a spray bottle.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Packaging Of Machine Parts And Wound Products (AREA)
  • Pallets (AREA)
  • Adhesive Tapes (AREA)
  • Paints Or Removers (AREA)

Abstract

La présente invention concerne un noyau qui, dans un état inutilisé sans application d'humidité sur celui-ci, ne dispose pas d'objets étrangers tels que d'autres noyaux ou de la poussière qui y adhère et lors de la fixation de la partie d'extrémité de l'élément de feuille à enrouler sur le noyau, l'enroulement peut être immédiatement initié par application d'humidité sur la surface adhésive disposée sur la surface de noyau et collage de l'élément de feuille sur celle-ci et l'élément de feuille peut être lié de manière sûre au noyau après l'enroulement et, lors de l'utilisation d'un film plastique en tant qu'élément de feuille, l'élément de feuille peut être détaché de manière nette du noyau. En ce qui concerne les utilisations de la partie adhérée 1 de la présente invention, elle ne se limite pas au matériau de noyau et d'emballage décrit précédemment et elle est appropriée pour être utilisée en tant que noyau adhésif ou matériau d'emballage. Autrement dit, la partie adhérée 1 selon la présente invention A. est appropriée pour être utilisée pour obtenir un matériau de noyau et d'emballage (matériau d'emballage tel qu'une carte de bord) dans un état d'application et l'application d'eau pendant l'utilisation améliore la force adhésive ; B. par la vente de la résine sous la forme d'un élément autonome, lorsque le client l'utilise, elle est appropriée pour une utilisation dans l'application d'une quantité nécessaire de résine à un endroit et à un enroulement nécessaires ou en tant que moyen pour fixer temporairement quelque chose par l'intermédiaire d'une adhésivité. C'est-à-dire, concernant un noyau, si l'élément en feuille, qui est le corps de collage, est temporairement collé sur le noyau, qui est la partie adhérée 1, puis séché, il sera fermement fixé ; lorsque l'élément de feuille est un film plastique, l'élément de feuille se détachera de manière nette lors du pelage de l'élément de feuille. L'impact de particules de papier et similaires est réduit étant donné que le produit de film et le tube de papier peuvent se détacher de manière propre en finalité et la surface du tube de papier ne se casse pas, ce qui rend son utilisation plus facile dans une salle blanche que celle de l'article classique.
PCT/EP2017/061753 2016-08-22 2017-05-16 Tube de papier, matériau d'emballage, agent de revêtement et procédé de fabrication d'agent de revêtement et procédé de fabrication de tube de papier Ceased WO2018036671A1 (fr)

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JP2005162468A (ja) 2003-12-05 2005-06-23 Showa Marutsutsu Co Ltd 巻芯及び巻回体並びに巻芯の使用方法
US20120316282A1 (en) * 2011-06-10 2012-12-13 Celanese Emulsions Gmbh Vinyl ester/ethylene copolymer dispersions for use in adhesive formulations
WO2013160711A1 (fr) * 2012-04-25 2013-10-31 Celanese Emulsions Gmbh Copolymères en émulsion d'ester vinylique/éthylène à faible concentration de formaldéhyde
WO2015091379A1 (fr) * 2013-12-16 2015-06-25 Wacker Chemie Ag Procédés d'application de colles en dispersion

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JP6171063B1 (ja) 2017-07-26
JP2018030713A (ja) 2018-03-01

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