WO2021221070A1 - 粘着テープ - Google Patents
粘着テープ Download PDFInfo
- Publication number
- WO2021221070A1 WO2021221070A1 PCT/JP2021/016842 JP2021016842W WO2021221070A1 WO 2021221070 A1 WO2021221070 A1 WO 2021221070A1 JP 2021016842 W JP2021016842 W JP 2021016842W WO 2021221070 A1 WO2021221070 A1 WO 2021221070A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- adhesive tape
- warp
- pressure
- sensitive adhesive
- Prior art date
Links
- 239000002390 adhesive tape Substances 0.000 title claims abstract description 27
- 239000010410 layer Substances 0.000 claims abstract description 99
- 239000004744 fabric Substances 0.000 claims abstract description 20
- 239000012790 adhesive layer Substances 0.000 claims abstract description 8
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 36
- 239000000463 material Substances 0.000 claims description 31
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- -1 polyethylene Polymers 0.000 claims description 11
- 238000009940 knitting Methods 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 2
- 239000000758 substrate Substances 0.000 abstract 3
- 230000032798 delamination Effects 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 229920005989 resin Polymers 0.000 description 21
- 239000011347 resin Substances 0.000 description 21
- 239000000853 adhesive Substances 0.000 description 9
- 230000001070 adhesive effect Effects 0.000 description 9
- 229920001971 elastomer Polymers 0.000 description 9
- 238000011282 treatment Methods 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 239000005060 rubber Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 5
- 229920005992 thermoplastic resin Polymers 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 4
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 4
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 4
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- 244000043261 Hevea brasiliensis Species 0.000 description 2
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- 239000004677 Nylon Substances 0.000 description 1
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- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
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- 239000003063 flame retardant Substances 0.000 description 1
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- 125000000524 functional group Chemical group 0.000 description 1
- 229920001903 high density polyethylene Polymers 0.000 description 1
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- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
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- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- ZEMHQYNMVKDBFJ-UHFFFAOYSA-N n-(3-hydroxypropyl)prop-2-enamide Chemical compound OCCCNC(=O)C=C ZEMHQYNMVKDBFJ-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- CNWVYEGPPMQTKA-UHFFFAOYSA-N n-octadecylprop-2-enamide Chemical compound CCCCCCCCCCCCCCCCCCNC(=O)C=C CNWVYEGPPMQTKA-UHFFFAOYSA-N 0.000 description 1
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- 150000003505 terpenes Chemical class 0.000 description 1
- 235000007586 terpenes Nutrition 0.000 description 1
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- 229910052719 titanium Inorganic materials 0.000 description 1
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- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
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Classifications
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- 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
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- C—CHEMISTRY; METALLURGY
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- 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
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- C—CHEMISTRY; METALLURGY
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- 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
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- 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
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- 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
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/01—Surface features
- D10B2403/012—Alike front and back faces
- D10B2403/0122—Smooth surfaces, e.g. laminated or coated
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2403/00—Details of fabric structure established in the fabric forming process
- D10B2403/03—Shape features
- D10B2403/031—Narrow fabric of constant width
- D10B2403/0311—Small thickness fabric, e.g. ribbons, tapes or straps
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- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2501/00—Wearing apparel
- D10B2501/06—Details of garments
- D10B2501/063—Fasteners
Definitions
- the present invention relates to an adhesive tape suitably used as a packaging material and a curing material.
- High adhesive strength type adhesive tapes have been widely used for fixing, bundling, or painting masking of materials in a wide range of fields such as agriculture, civil engineering, construction, and transportation. Further, such an adhesive tape is required to have an appropriate base material strength and hand-cutting property because of its convenience in work.
- Patent Document 1 discloses an adhesive tape having such improved hand-cutting property.
- a chemical or physical anchor treatment layer is formed on one side or the front and back surfaces of a knitted fabric formed by inserting a flat yarn mainly made of a thermoplastic resin into a warp yarn in which a multifilament is independently knitted as a weft yarn.
- a adhesive tape in which a pressure-sensitive adhesive is applied to one or both sides of a knitted fabric base material in which a thermoplastic resin is laminated on one or both sides in a molten state or a dry film state on the anchored layer.
- Vertical / horizontal tensile strength, vertical / horizontal tear strength, and vertical / horizontal elongation are specified as specific values.
- the conventional adhesive tape generally has a structure in which the surface of the base cloth as described above is covered with a laminated layer of a thermoplastic resin, and an adhesive layer is formed via an undercoating agent layer.
- the adhesive tape When the adhesive tape is attached to the adherend and peeled off, the adhesive remains on the adherend (hereinafter, this phenomenon is also referred to as "adhesive residue"), and further, the laminate layer is formed. It may peel off and remain on the adherend together with the adhesive.
- the phenomenon in which the laminated layer is peeled off is called “lame peeling". If the adhesive remains, it can be removed by wiping with alcohol, etc., but if the lami is peeled off, the adhesive may be covered with the residue of the laminate layer, making it difficult to wipe off with alcohol, etc. ..
- an object of the present invention is to provide an adhesive tape in which laminating peeling is unlikely to occur even if the laminate layer is thinned.
- the present inventors have found that by specifying the structure of the base cloth on the side where the pressure-sensitive adhesive layer is formed, an pressure-sensitive adhesive tape in which lami peeling is unlikely to occur can be obtained.
- the present invention A base material for warp knitted fabric with wefts inserted into a loop structure formed by multifilament warp threads, A first laminate layer formed on the first surface where one warp appears on the surface of the weft of the base material, A second laminate layer formed on the second surface where two warp threads appear on the weft surface of the base material, and
- the present invention relates to an adhesive tape having an adhesive layer formed on the first laminated layer side.
- the number of warp threads appearing on the surface of the weft threads is relatively small on the first surface of the warp knitted fabric forming the first laminate layer. As a result, the contact area between the weft and the laminate layer is increased, and peeling of the lami is suppressed.
- the adhesive tape according to the embodiment of the present invention has a warp-knitted base material in which wefts are inserted into a loop structure formed by multifilament warp yarns, and one warp yarn on the weft yarn surface of the base material.
- FIG. 1 is a plan view (a) showing an outline of a vertical knitted fabric 1 used in one embodiment of the present invention and a schematic cross-sectional view (b) along the AA'line, and is a multifilament warp 12
- the independent chain knitting 13 is formed by the above method, and the weft thread 11 is inserted in the weft thread 11 in the weft.
- the surface having one warp thread 12 is called the first surface 1A
- the surface having two warp threads 12 is called the second surface 1B.
- an independent chain knitting structure in which warp threads are connected in the vertical direction is shown as a loop structure by warp threads, but the structure is not limited to this, and is shown in, for example, Japanese Patent Application Laid-Open No. 2014-210998.
- a denby knitting structure may be used.
- Other known loop structures can be used as well. In either case, the loop structure formed by the warp may be formed so as to form a surface in which one warp appears and a surface in which two warp appear in each loop structure.
- the warp is not particularly limited as long as it is a material used in the art, and for example, a polyolefin resin such as polyethylene and polypropylene, a polyester resin such as polyethylene terephthalate (PET), a polyacrylic resin, and a polyamide resin such as nylon. Resin etc. can be used.
- a multifilament made of these resins is used as the warp, and the fineness thereof is 10 to 1000 denier (1.11 to 111 tex), preferably 20 to 500 denier (2.22 to 55.5 tex) as the base material. Good balance of strength, hand cutting and elongation.
- the number of warp threads to be driven can be 10 to 40 threads / inch.
- the weft is not particularly limited as long as it is a material used in the art, and the same thermoplastic resin as the warp can be used. It is preferable to use a flat yarn obtained by processing a film obtained by melt-extruding these thermoplastic resins from a T-shaped die or a circular die into a narrow width. If necessary, a modifier such as an antiaging agent or an antistatic agent may be added.
- the fineness is preferably 50 to 1000 denier (5.55 to 111 tex), more preferably 100 to 500 denier (11. 1 to 55.5 tex).
- the number of weft threads to be driven can be 8 to 28 threads / inch.
- FIG. 2 is a cross-sectional view of a tape in which an adhesive layer 6 is formed on one side of the adhesive tape of the present invention.
- the second laminate layer 3 is formed, and the pressure-sensitive adhesive layer 6 is provided on the side of the first laminate layer 2.
- the primer layer 4 is provided between the first laminate layer 2 and the pressure-sensitive adhesive layer 6, and the backing agent layer 5 is provided on the surface of the second laminate layer 3 on the surface opposite to the pressure-sensitive adhesive layer 6.
- these layers are arbitrary layers.
- the surface in contact with the pressure-sensitive adhesive layer 6 may be wound via a release paper or a release film, but a release layer is formed as the back agent layer 5. You may.
- Laminate layer It is preferable to use a resin material of the same type as the weft for the laminate layer from the viewpoint of suppressing peeling of the lami.
- the coating amount per side can be selected from the range of 50 to 250 g / m 2 according to the purpose, and the thickness can be selected from the range of 5 to 300 ⁇ m. In the present invention, even if the laminate layer, particularly the first laminate layer in which the lami peeling is likely to occur is thinly formed, the lami peeling is unlikely to occur.
- a physical or chemical surface treatment is applied to the first surface 1A of the vertical knitted fabric 1 as a base material.
- the physical treatment include corona treatment, UV treatment, sputtering treatment and the like
- the chemical treatment include a treatment of applying a resin selected from organic titanium-based, isocyanate-based, polyethyleneimine-based, polybutadiene-based and the like.
- FIG. 3 shows a mode in which processing is performed by the corona processing device 7.
- the resin material 14 is supplied from the extruder 9 to the first surface 1A of the warp knitted fabric 1 via the T-die 10, and the resin material 14 is applied to the rubber press roll 15. While pressing against the cooling roll 16 together with the vertical knitted fabric 1, it is attached to the vertical knitted fabric 1.
- the matte surface is used as the cooling roll 16 by using a so-called matte roll having an uneven surface, as shown in FIG. 4A.
- the first laminate layer 2 having 2A is formed on the first surface 1A.
- the front and back sides are reversed, and the surface treatment and the resin material 14 are bonded to the second surface 1B of the vertical knitted fabric 1 in the same manner as the first surface 1A.
- the cooling roll 16 By using a so-called mirror roll whose surface is mirror-processed as the cooling roll 16 in this case, the second laminate layer 3 having a smooth surface is formed as shown in FIG. 4 (b).
- the matte surface 2A in contact with the press roll 15 forms an uneven surface 2B that reflects the unevenness of the warp threads. It becomes the first laminated layer 2 to have.
- the contact area when the pressure-sensitive adhesive layer 6 is formed is increased, and the residue of the pressure-sensitive adhesive can be effectively suppressed.
- An undercoating agent layer can be formed on the surface of the first laminate layer formed as described above in order to improve the adhesion with the pressure-sensitive adhesive layer.
- various elastomers for example, a copolymer of ethylene and vinyl acetate, chlorinated polypropylene, a reaction product of a styrene / butadiene copolymer and a phenol resin, butyl acrylate, vinyl acetate, acrylic acid amide, natural rubber or (Synthetic rubber reactants, etc.
- the surface of the first laminate layer may be modified by corona treatment, etching treatment, plasma treatment, sandblasting or the like.
- the pressure-sensitive adhesive may be appropriately selected from known pressure-sensitive adhesive compositions so as to have a desired adhesive strength.
- the pressure-sensitive adhesive layer contains a base polymer (referred to as a pressure-sensitive adhesive base polymer) as a pressure-sensitive adhesive component.
- the pressure-sensitive adhesive-based polymer is not particularly limited, but an acrylic pressure-sensitive adhesive or a rubber-based pressure-sensitive adhesive can be used. Examples of the acrylic pressure-sensitive adhesive include methyl (meth) acrylate, ethyl (meth) acrylate, isopropyl (meth) acrylate, n-butyl (meth) acrylate, and 2-ethylhexyl (meth) acrylate.
- the main component is (meth) acrylic acid ester monomer such as isooctyl (meth) acrylic acid, nonyl (meth) acrylic acid, and isononyl (meth) acrylic acid, and (meth) acrylic acid, crotonic acid, fumaric acid, and itaconic acid.
- Acrylic obtained by copolymerizing a monomer containing a functional group such as (anhydrous) maleic acid, vinyl acetate, acrylonitrile, styrene, 2-hydroxyethyl (meth) acrylic acid, 2-methylolethyl acrylamide, etc., if necessary.
- Acrylic acid-based adhesives can be mentioned.
- a rosin-based resin or a terpene is used for one or a combination of two or more elastomer components such as natural rubber, styrene-butadiene rubber, butyl rubber, isoprene rubber, butadiene rubber, and styrene-isoprene block copolymer.
- the pressure-sensitive adhesive layer may contain various additives known in the art, in addition to the pressure-sensitive adhesive base polymer.
- various additives such as cross-linking agents, flame retardants, antioxidants, weather resistant agents, softening agents, stabilizers, fillers, bulking agents, reinforcing agents, etc. are used in combination of one or more. Can include.
- the thickness of the pressure-sensitive adhesive layer can be appropriately set according to the purpose and each component of the pressure-sensitive adhesive used, but can be formed in the range of, for example, 5 to 200 ⁇ m.
- the pressure-sensitive adhesive layer is formed by directly on the first laminate layer, or after forming the undercoating agent layer or surface-treating it, and then applying it by various coating devices. Examples of the coating device include a roll coater, a die coater, a lip coater, a Meyer bar coater, a gravure coater, and the like.
- release agents When winding as a tape, various release agents are applied to the surface on the side of the second laminate layer, which is in contact with the pressure-sensitive adhesive layer, as a back surface treatment.
- a long-chain alkyl type release agent copolymer of stearyl acrylate and acrylic acid, vinyl acetate or acrylonitrile, copolymer of stearyl acrylamide and acrylonitrile or acrylic acid, stearyl vinyl ether and acrylic acid, anhydrous (Copolymers with maleic acid and acrylonitrile), addition reaction type, condensation reaction type, cationic polymerization type, radical polymerization type silicone-based release agents and the like.
- These release agents can also be coated and formed by the above-mentioned various coating devices.
- Example 1 A 30 denier (3.3 tex) polyester multifilament was used as the warp, and a 300 denier (33 tex) high-density polyethylene flat yarn was used as the weft, and the warp had an independent chain knitting structure as shown in FIG.
- the base material was knitted on the knitted fabric.
- a resin layer was formed on both the front and back surfaces of the knitted base material to prepare a laminated tape.
- Polyethylene resin was used for the resin layer.
- a transparent polyethylene resin was melted and extruded from a T-die on the first surface 1A of the base material stretched between the two rubber rolls, and pressed by a mat roll.
- first layer the side forming the pressure-sensitive adhesive layer
- second layer the thickness of the first layer (first laminated layer of the present invention) was 30 ⁇ m
- the thickness of the second layer (second laminated layer of the present invention) was 33 ⁇ m.
- an acrylic pressure-sensitive adhesive is applied with a roll coater to form a pressure-sensitive adhesive layer having a thickness of 35 ⁇ m, and the pressure-sensitive adhesive of Example 1 is formed.
- the tape configuration is shown in Table 1.
- Comparative Example 1 The adhesive tape of Comparative Example 1 was produced in the same manner as in Example 1 except that the first layer was formed on the second surface of the base material and the second layer was formed on the first surface.
- the tape configuration is shown in Table 1.
- Comparative Example 2 An adhesive tape was produced in the same manner as in Comparative Example 1 except that the thickness of the laminated layer was changed as shown in Table 1.
- the evaluation method was carried out in accordance with the adhesive strength measurement test of JIS Z0237.
- the evaluation criteria are as follows. The results are shown in Table 2.
- Example 1 in the adhesive tape of the present invention in which the first laminated layer is formed on the first surface of the base material and the adhesive layer is formed on the first laminated layer, even if the first laminated layer is thinned, the laminating Peeling could be effectively suppressed.
- Comparative Example 1 in which a thin laminate layer was formed on the second surface of the base material, a large amount of lami peeling was observed. Therefore, it is necessary to form the laminate layer thick as in Comparative Example 2.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesive Tapes (AREA)
Abstract
Description
このような手切れ性を改良した粘着テープが特許文献1に開示されている。
粘着テープを被貼着体に貼り付け、引き剥がしを行う際に、粘着剤が被貼着体に残ったり(以下、この現象を「粘着剤残り」ともいう。)、さらには、ラミネート層が剥がれて粘着剤と共に被貼着体に残ったりすることがある。ラミネート層が剥がれる現象を「ラミ剥がれ」と呼ぶ。粘着剤残りの場合、アルコール等による拭き取りで除去することができるが、ラミ剥がれの場合、粘着剤をラミネート層残滓でフタをしている状態となり、アルコール等での拭き取りが困難となることがある。
そこで、本発明の目的は、ラミネート層を薄くしてもラミ剥がれが生じ難い粘着テープを提供することにある。
マルチフィラメントの経糸により形成されたループ構造に緯糸が挿入された、たて編地の基材と、
前記基材の前記緯糸表面に経糸が1本現れる第一の面に形成された第一ラミネート層と、
前記基材の前記緯糸表面に経糸が2本現れる第二の面に形成された第二ラミネート層と、
前記第一ラミネート層側に形成された粘着剤層と、を有する粘着テープに関する。
<基材(たて編地)>
本発明の一実施形態に係る粘着テープは、基材として、マルチフィラメントの経糸により形成されたループ構造に緯糸が挿入されたたて編地を使用する。図1は、本発明の一実施形態に使用するたて編地1の概略を示す平面図(a)と、A-A’線での概略断面図(b)であり、マルチフィラメントの経糸12により独立鎖編み13が形成されており、ここに緯糸11をヨコ入れ挿入した構成を示している。概略断面図(b)に示すように、各独立鎖編み13において、経糸12が1本となる面を第一の面1A、経糸12が2本となる面を第二の面1Bと呼ぶ。
経糸としては当該分野において使用される材料であれば特に限定されず、例えば、ポリエチレン、ポリプロピレン等のポリオレフィン系樹脂、ポリエチレンテレフタレート(PET)等のポリエステル系樹脂、ポリアクリル系樹脂、ナイロン等のポリアミド系樹脂などが使用できる。これらの樹脂からなるマルチフィラメントを経糸として用いるが、その繊度として10~1000デニール(1.11~111テックス)、好ましくは20~500デニール(2.22~55.5テックス)のものが基材強度、手切れ性、伸びのバランスが良好である。経糸の打込本数としては10~40本/インチとすることができる。
緯糸としては当該分野において使用される材料であれば特に限定されず、上記経糸と同様の熱可塑性樹脂が使用できる。これらの熱可塑性樹脂をT型ダイスや円形ダイスから溶融押出ししたフィルムを細幅に加工したフラットヤーンを用いることが好ましい。必要に応じて老化防止剤や帯電防止剤などの改質剤を添加してもよい。又、その繊度はタテ方向への手切れ性、及びラミネート時の熱劣化とのバランスから50~1000デニール(5.55~111テックス)のものが好ましく、より好ましくは100~500デニール(11.1~55.5テックス)である。また、緯糸の打込本数としては8~28本/インチとすることができる。
図2は、本発明の粘着テープで片面に粘着剤層6を形成したテープの断面図であり、たて編地1の第一の面1Aに第一ラミネート層2、第二の面1Bに第二ラミネート層3が形成されており、第一ラミネート層2側に粘着剤層6が設けられている。ここでは、第一ラミネート層2と粘着剤層6との間に下塗り剤層4が設けられており、粘着剤層6とは反対の面の第二ラミネート層3の表面に背面剤層5が設けられた構造を示しているが、これらの層は任意の層である。テープをロール状に巻き回して形成する場合、粘着剤層6と接触する面には、離型紙、離型フィルムを介して巻き回してもよいが、背面剤層5として離型層を形成してもよい。
ラミネート層は、緯糸と同種の樹脂材料を用いることがラミ剥がれの抑制の点で好ましい。片面当たりの塗布量は50~250g/m2の範囲から目的に合わせて選択することができ、厚みとしては5~300μmの範囲から選択することができる。本発明ではラミネート層、特にラミ剥がれの発生し易い第一ラミネート層を薄く形成してもラミ剥がれが発生しにくい。
まず、基材となるたて編地1の第一の面1Aに物理的または化学的な表面処理(アンカー処理)を施す。物理的処理としてはコロナ処理、UV処理、スパッタリング処理等が挙げられ、化学的処理としては有機チタン系、イソシアネート系、ポリエチレンイミン系、ポリブタジエン系などから選んだ樹脂を塗布する処理が挙げられる。図3にはコロナ処理装置7で処理する態様を示す。次に、押出ラミネータ8を用い、たて編地1の第一の面1Aに押出機9からTダイ10を介して樹脂材料14を供給し、この樹脂材料14を、ゴム製のプレスロール15によりたて編地1と共に冷却ロール16に押し当てながらたて編地1と貼り合わせる。ここで、第一の面1Aに樹脂材料14を貼り合わせる際、冷却ロール16として、表面に凹凸加工が施されたいわゆるマットロールを使用することにより、図4(a)に示すようにマット面2Aを有する第一ラミネート層2が第一の面1A上に形成される。
このように、第一ラミネート層の表面が凹凸面となることで、粘着剤層6を形成する際の接触面積が増大し粘着剤残りを効果的に抑制することができる。
上記のように形成した第一ラミネート層の表面には、粘着剤層との密着性を改善するために、下塗り剤層を形成することができる。下塗り剤としては、各種エラストマー(例えば、エチレンと酢酸ビニルとの共重合体、塩素化ポリプロピレン、スチレン・ブタジエン共重合体とフェノール樹脂の反応物、ブチルアクリレート、酢酸ビニル、アクリル酸アミド、天然ゴムまたは合成ゴムの反応物等)の塗布、各種プライマーの塗布などが挙げられる。また、下塗り剤層の形成に変えて、第一ラミネート層の表面をコロナ処理、エッチング処理、プラズマ処理、サンドブラスト処理等で表面を改質してもよい。
粘着剤としては、公知の粘着剤組成物から所望の粘着力になるように適宜選択して使用すればよい。粘着剤層は、粘着剤成分としてのベースポリマー(粘着剤ベースポリマーという)を含む。前記粘着剤ベースポリマーは特に限定されないが、アクリル系粘着剤やゴム系粘着剤を用いることができる。前記アクリル系粘着剤としては、例えば(メタ)アクリル酸メチル、(メタ)アクリル酸エチル、(メタ)アクリル酸イソプロピル、(メタ)アクリル酸n-ブチル、(メタ)アクリル酸2-エチルへキシル、(メタ)アクリル酸イソオクチル、(メタ)アクリル酸ノニル、(メタ)アクリル酸イソノニル等の(メタ)アクリル酸エステルモノマーを主成分とし、これに(メタ)アクリル酸、クロトン酸、フマル酸、イタコン酸、(無水)マレイン酸等の官能基を含むモノマーや酢酸ビニル、アクリロニトリル、スチレン、(メタ)アクリル酸2-ヒドロキシエチル、2-メチロールエチルアクリルアミド等を必要に応じて共重合させることにより得られるアクリル系粘着剤が挙げられる。
テープとして巻き回しする際に、粘着剤層と接する第二ラミネート層側表面は、背面処理として各種離型剤を塗布する。離型剤としては、長鎖アルキル系離型剤(ステアリルアクリレートとアクリル酸、酢酸ビニルまたはアクリロニトリルとの共重合物、ステアリルアクリルアミドとアクリロニトリルやアクリル酸との共重合物、ステアリルビニルエーテルとアクリル酸、無水マレイン酸、アクリロニトリルとの共重合物)や、付加反応型、縮合反応型、カチオン重合型、ラジカル重合型のシリコーン系離型剤等が挙げられる。
これらの離型剤も、上記の各種塗布装置により塗布形成することができる。
経糸として、30デニール(3.3テックス)のポリエステルマルチフィラメントを、緯糸に300デニール(33テックス)の高密度ポリエチレンフラットヤーンを用い、図1に示すように、経糸が独立鎖編み構造となるたて編み地に基材を編成した。
次に、編成した基材の表裏両面に樹脂層を形成してラミネートテープを作製した。樹脂層にはポリエチレン樹脂を採用した。まず、2つのゴムロール間に張架された基材の第一の面1AにTダイから透明なポリエチレン樹脂を溶融して押し出し、マットロールにより加圧した。次に、表裏を反転させた後、第二の面1Bにも同様にしてTダイから押し出したポリエチレン樹脂層を積層した。なお、第二の面にはミラーロールを押しつけて加圧した。
なお、以下の説明では、粘着剤層を形成する側を第1層、反対側を第2層として説明する。
第1層(本発明の第一ラミネート層)の厚みは30μm、第2層(本発明の第二ラミネート層)の厚みは33μmに形成した。
次に、第1層側にエチレン-酢酸ビニル共重合体の下塗り層を形成した後、アクリル系粘着剤をロールコーターにより塗布し、厚さ35μmの粘着剤層を形成し、実施例1の粘着テープを製造した。テープ構成を表1に示す。
基材の第二の面に第1層、第一の面に第二層のラミネート層を形成した以外は実施例1と同様にして比較例1の粘着テープを製造した。テープ構成を表1に示す。
ラミネート層の厚みを表1に示すように変更した以外は比較例1と同様にして粘着テープを製造した。
△ :ラミ剥がれ5%未満
× :ラミ剥がれ5%~30%未満
×× :ラミ剥がれ30%~80%未満
×××:ラミ剥がれ80%以上
11 緯糸
12 経糸
13 独立鎖編み
1A 第一の面
1B 第二の面
2 第一ラミネート層
3 第二ラミネート層
4 下塗り剤層
5 背面剤層
6 粘着剤層
7 コロナ処理装置
8 押出ラミネータ
9 押出機
10 Tダイ
14 樹脂材料
15 プレスロール(ゴム製)
16 冷却ロール
Claims (8)
- マルチフィラメントの経糸により形成されたループ構造に緯糸が挿入された、たて編地の基材と、
前記基材の前記緯糸表面に経糸が1本現れる第一の面に形成された第一ラミネート層と、
前記基材の前記緯糸表面に経糸が2本現れる第二の面に形成された第二ラミネート層と、
前記第一ラミネート層側に形成された粘着剤層と、を有する粘着テープ。 - 前記ループ構造が独立鎖編みである請求項1に記載の粘着テープ。
- 前記緯糸がフラットヤーンである請求項1または2に記載の粘着テープ。
- 前記フラットヤーンがポリエチレン製である請求項3に記載の粘着テープ。
- 前記第一ラミネート層と前記第二ラミネート層がポリエチレンを含む請求項4に記載の粘着テープ。
- 前記経糸がポリエステル製のマルチフィラメントである請求項1~5のいずれか1項に記載の粘着テープ。
- 前記粘着剤層と前記第一ラミネート層との間に下塗り剤層を有する請求項1~6のいずれか1項に記載の粘着テープ。
- 前記第二ラミネート層の表面に背面剤層を有し、該背面剤層が外側となるようにロール形態に保持した請求項1~7のいずれか1項に記載の粘着テープ。
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US17/922,559 US20230174824A1 (en) | 2020-05-01 | 2021-04-27 | Adhesive tape |
CN202180030916.XA CN115461422A (zh) | 2020-05-01 | 2021-04-27 | 粘合带 |
EP21795806.5A EP4144526A4 (en) | 2020-05-01 | 2021-04-27 | ADHESIVE TAPE |
JP2022518094A JP7431321B2 (ja) | 2020-05-01 | 2021-04-27 | 粘着テープ |
KR1020227037154A KR20220154820A (ko) | 2020-05-01 | 2021-04-27 | 점착 테이프 |
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EP (1) | EP4144526A4 (ja) |
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JP3555880B2 (ja) | 2001-03-30 | 2004-08-18 | 株式会社寺岡製作所 | 編布粘着テープ |
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KR20120041501A (ko) * | 2010-10-21 | 2012-05-02 | 하승준 | 숯을 이용한 고기구이판 |
KR20230146062A (ko) * | 2021-03-15 | 2023-10-18 | 가부시키가이샤 데라오카 세이사쿠쇼 | 점착 테이프 |
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- 2021-04-27 KR KR1020227037154A patent/KR20220154820A/ko not_active Application Discontinuation
- 2021-04-27 JP JP2022518094A patent/JP7431321B2/ja active Active
- 2021-04-27 TW TW110115018A patent/TW202200729A/zh unknown
- 2021-04-27 EP EP21795806.5A patent/EP4144526A4/en active Pending
- 2021-04-27 CN CN202180030916.XA patent/CN115461422A/zh active Pending
- 2021-04-27 WO PCT/JP2021/016842 patent/WO2021221070A1/ja unknown
- 2021-04-27 US US17/922,559 patent/US20230174824A1/en active Pending
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US20230174824A1 (en) | 2023-06-08 |
EP4144526A1 (en) | 2023-03-08 |
EP4144526A4 (en) | 2024-05-29 |
JPWO2021221070A1 (ja) | 2021-11-04 |
KR20220154820A (ko) | 2022-11-22 |
JP7431321B2 (ja) | 2024-02-14 |
CN115461422A (zh) | 2022-12-09 |
TW202200729A (zh) | 2022-01-01 |
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