WO2022075201A1 - 粘着テープ - Google Patents

粘着テープ Download PDF

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Publication number
WO2022075201A1
WO2022075201A1 PCT/JP2021/036322 JP2021036322W WO2022075201A1 WO 2022075201 A1 WO2022075201 A1 WO 2022075201A1 JP 2021036322 W JP2021036322 W JP 2021036322W WO 2022075201 A1 WO2022075201 A1 WO 2022075201A1
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WO
WIPO (PCT)
Prior art keywords
adhesive tape
layer
amount
laminated layer
adhesive
Prior art date
Application number
PCT/JP2021/036322
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
雄志 浅井
駿 細野
晋二 小川
賢太郎 小林
吉史 堀内
アンディ ロフマディ
アラン ソレンティ アマヘシャ
Original Assignee
株式会社寺岡製作所
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 株式会社寺岡製作所 filed Critical 株式会社寺岡製作所
Priority to KR1020237014483A priority Critical patent/KR20230074808A/ko
Priority to CN202180068298.8A priority patent/CN116323192A/zh
Priority to JP2022555431A priority patent/JP7525632B2/ja
Publication of WO2022075201A1 publication Critical patent/WO2022075201A1/ja

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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
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • 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
    • C09J107/00—Adhesives based on natural rubber
    • 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
    • C09J121/00—Adhesives based on unspecified rubbers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/21—Paper; Textile fabrics
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/22—Plastics; Metallised plastics
    • C09J7/24—Plastics; Metallised plastics based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/241—Polyolefin, e.g.rubber
    • C09J7/243—Ethylene or propylene polymers
    • 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
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • 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
    • C09J7/38—Pressure-sensitive adhesives [PSA]
    • C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • C09J7/383—Natural or synthetic rubber
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/20—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the material of the fibres or filaments constituting the yarns or threads
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
    • D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
    • D03D15/49—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads textured; curled; crimped

Definitions

  • the present invention relates to an adhesive tape suitably used for applications such as packaging and curing.
  • Adhesive tape is widely used for fixing, bundling, or painting masking of materials in a wide range of fields such as agriculture, civil engineering, construction, and transportation.
  • adhesive tapes have adhesiveness that can be attached to various objects, appropriate base material strength, and ease of cutting by hand (hand-cutting property) to improve work convenience. , It is required to have peelability.
  • Patent Document 1 uses a base cloth 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.
  • an adhesive tape in which a thermoplastic resin is laminated on the front and back surfaces thereof, and a pressure-sensitive adhesive is applied to one or both sides thereof.
  • the 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, and the adhesive tape having this structure is wound around. It is a product.
  • the adhesive tape when the adhesive tape is attached to the adherend and peeled off, the adhesive remains on the adhered body (hereinafter, this phenomenon is also referred to as "adhesive residue") or is wound.
  • the laminated layer may be peeled off from the adhesive tape (hereinafter, the phenomenon that the laminated layer is peeled off from the base cloth is also referred to as “laminate peeling").
  • the conventional adhesive tape suppresses the warp (curl) that occurs when the roll of the adhesive tape is rewound, and the warp (copping) in the width direction that occurs when the tension is released after the adhesive tape is rewound.
  • a laminated layer is formed on both sides of the base cloth to integrate the base cloth and the laminated layer.
  • a laminated layer is arranged between the base cloth and the adhesive layer, and an undercoating agent is applied to the surface of the laminated layer.
  • the laminate layer is made into a single layer in order to reduce the material cost and the manufacturing cost, or if the amount of resin and the amount of adhesive in the laminate layer is reduced, the base cloth and the laminate layer or the base cloth and the pressure-sensitive adhesive layer can be reduced. The bonding force with the adhesive is reduced, and adhesive residue and laminating peeling are likely to occur.
  • the adhesive tape for packing and curing has the property that the adhesive tape can be easily cut by hand without using cutting tools such as scissors and cutters in order to efficiently perform the packing work and curing work.
  • cutting tools such as scissors and cutters
  • hand cutting property the performance based on this
  • a multifilament yarn (hereinafter, also referred to as "false twist yarn") in which the warp of the base fabric is false-twisted is used, so that the strength of the adhesive tape in the length direction is improved.
  • the hand-cutting property deteriorates, and a strong force is required for hand-cutting, and warps that are desired to be sufficiently cut appear on the cut surface, causing fluffing.
  • the false twisted yarn has a large yarn diameter
  • an amount of laminated resin for embedding the yarn is used. It is necessary to embed the thread in a resin or the like using an adhesive, which causes an increase in the material cost of the adhesive tape.
  • the adhesive tape is required to have a certain stiffness (Stiffness) and elasticity (Anti-laminate stiffness) when it is attached or peeled off, but the number of layers of the adhesive tape is reduced in order to reduce the manufacturing cost. Or, if the laminated layer is made thin, the adhesive tape loses its elasticity and elasticity, which causes a problem that the handleability of the adhesive tape is deteriorated.
  • an adhesive tape having the following aspects.
  • A An adhesive tape including a base cloth, a laminate layer arranged on one surface of the base cloth, and an adhesive layer arranged on the other side of the base cloth, and the base cloth of the adhesive tape is A woven or knitted fabric composed of warp and weft, the laminate layer is composed of a thermoplastic resin containing polyethylene, and the pressure-sensitive adhesive layer is made of a rubber-based pressure-sensitive adhesive containing natural rubber or synthetic rubber as a main component.
  • the warp is an adhesive tape that is a woolly processed yarn made of polyester.
  • An adhesive tape containing a base cloth, a laminate layer arranged on one surface of the base cloth, and an adhesive layer arranged on the other side of the base cloth, wherein the base cloth is a warp and a warp. It is a woven or knitted fabric composed of weft threads, the adhesive layer is composed of natural rubber, synthetic rubber, or a rubber-based adhesive containing a mixture of natural rubber and synthetic rubber as a main component, and the laminated layer has a low density.
  • first laminated layer containing polyethylene, an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer, and a second laminated layer containing low-density polyethylene and high-density polyethylene, and the first laminated layer.
  • first laminated layer containing polyethylene, an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer
  • second laminated layer containing low-density polyethylene and high-density polyethylene
  • the adhesive tape according to one aspect of the present invention uses a base cloth made of polyester woolly processed yarn as a warp, and has a laminate layer made of a thermoplastic resin containing polyethylene and a pressure-sensitive adhesive layer made of a rubber-based pressure-sensitive adhesive. By combining them, the total thickness is thin, the peeling of the lami and the residual adhesive are suppressed, the hand-cutting property is excellent, and the cost can be reduced by the ease of manufacturing and the reduction of the amount of material used.
  • the adhesive tape according to another aspect of the present invention is based on a mixture of low-density polyethylene and an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer as the first laminated layer. It is possible to improve the bonding force between the cloth and the laminated layer and suppress the peeling of the lami. Further, when the laminated layer is strongly bonded to the base cloth, the intersections of the warp and weft of the base cloth are strongly bonded, and the hand-cutting property of the adhesive tape is improved.
  • the laminated layer penetrates between the fibers of the base cloth by laminating the first laminated layer made of a resin containing low density polyethylene having a low melting temperature as a main component on the base cloth side.
  • the bonding force between the laminated layer and the base fabric can be improved.
  • the adhesive tape according to one aspect of the present invention heats the first laminated layer by adding an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer to the low-density polyethylene constituting the first laminated layer.
  • the inter-adhesive strength is improved, and the bonding strength between the laminate layer and the base fabric can be further improved.
  • the adhesive tape is required to have a certain degree of elasticity, and when the laminate layer is composed of only low-density polyethylene or when the same mixed resin as the first laminate layer is used, the elasticity is obtained. I can't. Therefore, in the present invention, the adhesive tape is made firm and firm by adding high-density polyethylene to the second laminated layer.
  • the adhesive tape of the present invention contains a first laminated layer containing low-density polyethylene as a main component and an ethylene-vinyl acetate copolymer or an ethylene-ethyl acrylate copolymer as a main component, and low-density polyethylene as a main component.
  • a woven fabric or a knitted fabric composed of warp and weft of long fibers can be used as the base fabric used for the adhesive tape of the present invention.
  • the woven structure of the woven fabric can be selected from plain weave, twill weave, satin weave and the like according to various desired characteristics such as cutting direction and strength.
  • the knitted fabric used for the adhesive tape of the present invention is a cloth having a structure in which one of the warp and weft forms a continuous loop and the other is inserted into this loop. Whether the loop is formed in the warp and weft may be determined based on the cutting direction of the target adhesive tape by hand cutting, and the direction perpendicular to the thread forming the loop may be the direction of hand cutting.
  • the warp and weft described below are threads whose extension direction is arranged substantially parallel to the length direction of the adhesive tape, and the warp and weft is a thread whose extension direction is arranged substantially perpendicular to the length direction of the adhesive tape. To say.
  • Polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytributylene terephthalate (PTT), polyethylene naphthalate (PEN), and polylactic acid (PLA) are used as the materials for the warp threads of woven and knitted fabrics.
  • PET which is particularly versatile, is preferable. Since the polyester fiber used for the warp has a higher melting point than the polyethylene resin constituting the laminated layer, it is possible to prevent the yarn from melting or shrinking when the base fabric is laminated.
  • polyester fiber has a lower yarn elongation than other synthetic fibers such as polypropylene (PP) and nylon (Ny), so when cutting the adhesive tape by hand in the width direction, the elongation of the warp is suppressed and cut. It is possible to suppress fluffing and fraying of the surface.
  • PP polypropylene
  • Ny nylon
  • polyester woolly processed yarn is used as the warp of the base fabric.
  • the weft used for the base cloth of the adhesive tape is not particularly limited as long as it does not affect the formation of the laminate layer and the pressure-sensitive adhesive layer, and fibers generally used for the base cloth of the adhesive tape can be used. Woolly processed yarn made of polyester may be used. As a result, the bonding area between the single yarn of the base fabric and the laminate layer and the pressure-sensitive adhesive layer can be further increased as compared with the case where only the warp yarn is used as the woolly processed yarn, and the adhesive residue and the peeling of the lami can be suppressed.
  • the thickness of the base cloth can be further reduced as compared with the case where only the warp yarn is used as the woolly processed yarn, and the amount of the laminating resin or the adhesive for embedding the base cloth can be reduced. Further, when the adhesive tape is required to have hand-cutting property in the vertical direction, the cutting strength of the warp and weft is lowered, so that the hand-cutting property is improved.
  • Polyethylene false plying may be used as the weft used for the base cloth of the adhesive tape.
  • the bonding force between the laminated layer and the base fabric is increased, and the peeling of the laminate can be further suppressed.
  • Polyethylene flat yarn may be used as the weft used for the base cloth of the adhesive tape.
  • the bonding force between the laminated layer and the base fabric is increased, and the peeling of the laminate can be further suppressed.
  • the flat yarn as the weft the bonding area between the laminate layer and the pressure-sensitive adhesive layer and the base fabric can be increased, and the peeling of the laminate and the residue of the pressure-sensitive adhesive can be further suppressed.
  • the difference between the conventional false twisted yarn and the woolly processed yarn used in the present invention as the warp will be described with reference to the conceptual diagram of the cross section in the fiber direction shown in FIG.
  • the false twisted yarn 2 since the false twisted yarn 2 is densely packed with single yarns 1 by false twisting to form one yarn, the false twisted yarn 2 has a large a dimension, which is the thickness of the false twisted yarn 2.
  • the woolly processed yarn 3 since the woolly processed yarn 3 is untwisted, the yarn becomes flat as shown in FIG. 1B when the laminate layer and the adhesive layer are formed on the base fabric described later. , The thickness a'dimension of the woolly processed yarn 3 is smaller than the a dimension.
  • the area of the adhesive on the adhesive surface of the adhesive tape decreases, so that the adhesive strength of the adhesive tape decreases.
  • the warp and weft of the base cloth appear on the surface of the laminated layer, unevenness is generated on the surface of the laminated layer, the appearance is poor when the adhesive tape is attached to the adherend, and the uneven portion is stained. Problems such as occur.
  • the warps and wefts of the base cloth are exposed on the surface of the adhesive or the base cloth, if the exposed threads absorb water or moisture due to the atmospheric conditions during storage or use of the adhesive tape, the moisture will be absorbed between the laminate layer and the base cloth. It penetrates between the space or between the pressure-sensitive adhesive layer and the base cloth, and the bonding force between the laminate layer or the pressure-sensitive adhesive layer and the base cloth is reduced.
  • the amount of resin and the amount of adhesive used for the woolly processed yarn are smaller than those of the false plyed yarn, and the thickness b'of the laminated layer 4 when the woolly processed yarn 3 shown in FIG. 2 (b) is used.
  • the total thickness c'of the pressure-sensitive adhesive layer 5 is smaller than the total thickness b of the laminated layer 4 and the thickness c of the pressure-sensitive adhesive layer 5 when the false twisted yarn 2 shown in FIG. 2A is used. Therefore, the amount of resin required for forming the laminated layer 4 and the amount of adhesive required for forming the pressure-sensitive adhesive layer 5 are reduced, and the material cost can be suppressed as compared with the case of using false plying.
  • the cutting strength when cutting the laminated layer and the adhesive layer is also lowered by thinning the laminated layer and the adhesive layer. This makes it easier to cut by hand.
  • false twisted yarn, woolly processed yarn, flat yarn, etc. can be selected according to the performance required for the adhesive tape.
  • the thickness of the base fabric is further reduced as compared with the case where the woolly processed yarn is used only for the warp, and the amount of resin and adhesive used for the laminate layer is further reduced to make the adhesive tape. Can be thinned. Further, when the hand-cutting property is required in the length direction of the adhesive tape, the woolly processed yarn is used as the weft to reduce the breaking strength in the length direction and improve the hand-cutting property.
  • the bonding area between the base fabric and the laminate layer and the adhesive layer is increased, and the effect of effectively suppressing the adhesive residue and the peeling of the lami can be obtained.
  • the weft material is polyester such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT), polyolefin such as polyethylene (PE) and polypropylene (PP), polyamide such as 6 nylon and 6,6 nylon, rayon, cupra and the like. Regenerated fiber, plant fiber such as cotton and linen, etc. can be used. Further, a fiber obtained by blending fibers of these materials may be used.
  • the bonding force between the base fabric and the laminated layer is increased, and the peeling of the laminate can be further suppressed. Further, by using the polyethylene fiber, it is possible to improve the hand-cutting property in the length direction of the adhesive tape and improve the processing stability at the time of laminating processing.
  • the fineness of the warp is preferably 15 denier or more and 80 denier or less, and more preferably 20 denier or more and 70 denier or less.
  • the fineness of the warp yarn is 15 denier or more, the yarn strength does not become too low, and the weaving process of the base fabric becomes easy. Further, when the fineness of the warp is 70 denier or less, the hand-cutting property of the adhesive tape is not deteriorated.
  • the fineness of the single yarn constituting the warp is preferably 0.3 denier or more and 4 denier or less, and more preferably 0.5 denier or more and 2 denier or less.
  • Polyester fibers having a single yarn fineness of 0.3 denier or more can obtain sufficient breaking strength even when made into woolly processed yarns, and can suppress deterioration of workability when laminating the base fabric. Further, since the fineness of the single yarn is 4 denier or less, the force required for cutting does not increase, and the hand cutting property is good.
  • the density of the warp is preferably 20 or more and 180 or less per inch, and more preferably 50 or more and 150 or less. In the case of 20 or more, the warp density does not become too low, the strength in the length direction of the base fabric does not decrease, and the processing when forming the laminated layer on the base cloth becomes easy. Further, when the density of the warp yarns is 180 or less, the number of warp yarns becomes too large and no force is required for hand cutting, and an increase in manufacturing cost can be suppressed.
  • the fineness of the fiber used for the weft is preferably 30 denier or more and 250 denier or less, and more preferably 50 denier or more and 200 denier or less.
  • the fineness of the weft is 30 denier or more, it is possible to prevent the adhesive tape from becoming too thin, and it is possible to suppress the deterioration of the handleability of the adhesive tape.
  • the amount is 250 denier or less, the surface of the pressure-sensitive adhesive layer is prevented from being uneven and the adhesive performance is not deteriorated, and the resin that embeds the unevenness is manufactured by increasing the amount of the pressure-sensitive adhesive and the amount of the resin. Even if the cost rises, it can be suppressed.
  • the fineness is preferably 50 denier or more and 500 denier or less.
  • the flat yarn does not become too thin and the thermal deterioration of the yarn during the laminating process can be suppressed, and when it is 500 denier or less, the flat yarn does not become too thick and the laminate layer and the adhesive are used. It is possible to prevent an increase in the cost of the adhesive tape by suppressing an increase in the amount of the resin or the adhesive used for the layer.
  • the density of the weft is preferably 10 or more and 100 or less per inch, and more preferably 15 or more and 70 or less.
  • the number of threads is 10 or more, the decrease in the weft density can be suppressed, the strength in the width direction of the base cloth can be maintained, the processing when forming the laminate layer on the base cloth is easy, and the cut surface at the time of hand cutting. The straightness of the is not impaired.
  • the weft density is 100 or less, the number of wefts does not excessively force the adhesive tape to be cut by hand in the length direction, and the manufacturing cost can be suppressed.
  • a flat yarn When a flat yarn is used for the weft, it is preferably 5 or more and 30 or less per inch, and more preferably 8 or more and 25 or less.
  • the number of threads is 5 or more, the decrease in the weft density can be suppressed, the strength in the width direction of the base fabric can be maintained, the processing when forming the laminate layer on the base cloth becomes easy, and the cut surface at the time of hand cutting. The straightness of the is not impaired.
  • the number of wefts is 30 or less, the force required for manually cutting the adhesive tape in the length direction is not excessive, and the manufacturing cost can be suppressed.
  • these forming surfaces of the base fabric may be physically or chemically anchored.
  • 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. ..
  • the laminated layer in the adhesive tape of the present invention is composed of a thermoplastic resin containing polyethylene.
  • Polyethylene has a melting point of 100 to 150 ° C., which is lower than that of other general-purpose thermoplastic resins such as polypropylene, polyethylene terephthalate, and nylon. Therefore, the melting temperature of the resin when forming the laminated layer on the base fabric is low, and the manufacturing cost can be suppressed.
  • low density polyethylene LDPE
  • linear low density polyethylene LLDPE
  • high density polyethylene HDPE
  • low-density polyethylene the adhesiveness to the base cloth can be improved
  • high-density polyethylene a certain degree of hardness can be imparted to the laminated layer and the handleability of the adhesive tape can be improved. It is possible to express various characteristics required for the adhesive tape by selecting the resin composition.
  • low-density polyethylene means polyethylene having a density of more than 0.911 g / cm 3 and 0.925 g / cm 3 or less
  • high-density polyethylene means polyethylene having a density of more than 0.940 g / cm 3 . It is also possible to use medium-density polyethylene having a density of more than 0.925 g / cm 3 and 0.940 g / cm 3 or less as a part of the high-density polyethylene.
  • EVA Ethylene-vinyl acetate copolymer
  • EAA ethylene-ethyl acrylate copolymer
  • EVA ethylene-ethyl acrylate copolymer
  • the laminated layer of the adhesive tape according to one aspect of the present invention is mainly composed of a first laminated layer in which LDPE is the main component and a mixture obtained by adding EVA or EEA to the main component is arranged on the base cloth side, and HDPE. It is composed of a second laminated layer in which a mixture of LDPE added to the component is laminated on the first laminated layer.
  • the amount A of LDPE in the first laminated layer is preferably 60 to 95 parts by mass, more preferably 70 to 90 parts by mass.
  • the amount B of EVA or EEA is preferably 5 to 40 parts by mass, more preferably 10 to 30 parts by mass.
  • the total of the quantity A and the quantity B is 100 parts by mass.
  • the amount B is 5 parts by mass or more, a sufficient bonding force between the laminated layer and the base cloth required for the adhesive tape can be obtained.
  • the bonding force between the base fabric and the first laminated layer is improved by increasing the amount B, the unit price of EVA and EEA is generally higher than that of LDPE, and the manufacturing cost increases as the amount B increases. ..
  • the amount B is 40 parts by mass or less, an increase in manufacturing cost can be suppressed, and a mixing ratio can be obtained in which the bonding force between the laminated layer and the base fabric required for the adhesive tape can be obtained.
  • the amount of resin in the first laminated layer may be an amount that can secure the bonding force with the base fabric required for the adhesive tape, and is 5 g / m 2 or more, preferably 10 g / m 2 or more, more preferably 20 g / m. It can be 2 or more.
  • the upper limit of the amount of resin may be determined according to the function required for the adhesive tape. When the amount of the resin is small, the heat capacity of the first laminated layer is small, and the resin temperature is lowered due to the contact with the base cloth, so that the bonding force between the first laminated layer and the base cloth may not be sufficiently obtained. .. If the amount of the resin is too large, it takes time to cure the resin, so that the production speed is lowered and the productivity is affected. If it is 35 g / m 2 or less, the decrease in productivity can be suppressed.
  • the amount C of HDPE in the second laminated layer is preferably 55 to 90 parts by mass, more preferably 60 to 80 parts by mass.
  • the amount D of LDPE is preferably 10 to 45 parts by mass, more preferably 20 to 40 parts by mass.
  • the total of the quantity C and the quantity D is 100 parts by mass.
  • the amount C is 55 parts by mass or more, sufficient elasticity and elasticity required for the adhesive tape can be obtained.
  • the amount D is 10 parts by mass or more, the fluidity of the mixed resin can be ensured, and the deterioration of the processability of the laminating process can be suppressed. Further, with the above composition ratio, it is possible to prevent the bonding force with the first laminated layer from being lowered and delamination from occurring.
  • the amount of resin in the second laminated layer can be determined according to the elasticity and elasticity required for the adhesive tape, but is usually 5 g / m 2 or more, preferably 7 g / m 2 or more, and more preferably 10 g / m 2 or more. Is.
  • the upper limit of the amount of resin may be determined according to the function required for the adhesive tape.
  • the total amount of resin in the first laminated layer and the second laminated layer is equal to or more than the total of the above lower limit values, but is preferably 30 g / m 2 or more, more preferably 35 g / m 2 or more, still more preferably 40 g / m 2 or more. ..
  • the upper limit of the total amount of the resin may be determined according to the function required for the adhesive tape, but the total amount of the resin is preferably 60 g / m 2 or less, more preferably 50 g / m 2 or less from the viewpoint of hand-cutting property.
  • a pressure-sensitive adhesive containing natural rubber, synthetic rubber, or a mixture of natural rubber and synthetic rubber as a main component can be used. Since rubber-based adhesives have lower adherend selectivity than acrylic-based adhesives and silicone-based adhesives, they are strongly bonded to both the base fabric and the laminate layer, so that the adhesive residue can be suppressed. can.
  • a sheet rubber obtained by coagulating and drying natural rubber latex with an acid to form a sheet, or a block rubber formed after washing and drying the coagulated small granular rubber can be used.
  • Sheet rubber includes ribbed smoked sheet (RSS), which is a sheet dried while smoking, and crepe, which is a coagulated product washed with water and then dried with hot air.
  • RSS is classified according to the color tone and the proportion of foreign matter.
  • a single grade may be used, or a plurality of grades of the sheet rubber may be mixed and used.
  • block rubber includes CV grade to which a viscosity stabilizer is added and L grade to which a discoloration inhibitor is added.
  • CV grade to which a viscosity stabilizer is added
  • L grade to which a discoloration inhibitor is added.
  • the synthetic rubber examples include diene rubber such as isoprene rubber (IR), butadiene rubber (BR) and styrene butadiene rubber (SBR), butyl rubber (IIR), ethylene propylene rubber (EPM) and ethylene propylene diene rubber (EPDM).
  • diene rubber such as isoprene rubber (IR), butadiene rubber (BR) and styrene butadiene rubber (SBR), butyl rubber (IIR), ethylene propylene rubber (EPM) and ethylene propylene diene rubber (EPDM).
  • Synthetic rubber such as non-diene rubber that satisfies various characteristics such as the environment in which the adhesive tape is used and the adhesive strength required for the adhesive tape can be selected and used.
  • a pressure-sensitive adhesive containing a mixture of natural rubber and synthetic rubber as a main component may be used.
  • the pressure-sensitive adhesive can include a filler for adjusting the pressure-sensitive adhesive force, a pressure-imparting resin, a plasticizer as a softening component of the pressure-sensitive adhesive, and the like, in addition to the rubber-based pressure-sensitive adhesive as the main component.
  • the filler include heavy calcium carbonate, carbon black, titanium oxide, talc, cellulose powder and the like, and one of these can be used alone or in combination of two or more.
  • the tackifying resin various tackifying resins such as rosin-based resin, terpene-based resin, hydrocarbon-based resin, and phenol-based resin can be used, and one of these may be used alone or in combination of two or more. be able to.
  • plasticizer phthalic acid-based, isophthalic acid-based, terephthalic acid-based, adipic acid-based and their polyester-based plasticizers, phosphoric acid-based plasticizers, epoxy-based plasticizers, etc. are used alone or in combination of two or more. can do.
  • the pressure-sensitive adhesive may contain various additives known in the field of the present invention in addition to the above-mentioned fillers and the like.
  • additives include flame retardants, pigments, antiaging agents, lubricants and the like, and one or a combination of two or more of these can be included.
  • a mold release agent can be applied to the back side of the laminate layer opposite to the base cloth side to form a back treatment layer.
  • a back surface treatment layer By forming the back surface treatment layer, it is possible to prevent the adhesive residue on the surface of the laminated layer when the adhesive tape is wound and the laminating peeling from the base cloth.
  • 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. Examples thereof include copolymers with maleic acid and acrylonitrile), and silicone-based release agents such as addition reaction type, condensation reaction type, cationic polymerization type, and radical polymerization type.
  • the method for producing the adhesive tape is not particularly limited, and the adhesive tape can be produced using a known production method. For example, after weaving or knitting the base fabric, a resin containing polyethylene is laminated on one side thereof.
  • a method of laminating there are a method of thermally melting a resin containing polyethylene and extruding it onto a base cloth, or a method of laminating a film of a resin containing polyethylene on a base cloth and thermocompression bonding.
  • the surface of the base fabric on which the laminated layer is formed may be physically or chemically anchored in order to improve the adhesion between the base fabric and the laminated layer.
  • Examples of the physical treatment include corona treatment, UV treatment, sputtering treatment and the like
  • examples of the chemical treatment include a treatment of applying a resin selected from organic titanium-based, isocyanate-based, polyethyleneimine-based, polybutadiene-based and the like. ..
  • the laminated layer of the adhesive tape according to the embodiment of the present invention first contains LDPE as a main component, and a mixture obtained by adding EVA or EEA to the laminated layer is heat-melted, and then the surface of the base cloth is extruded or the like. A first laminate layer is formed on the surface. Next, a mixture containing HDPE as a main component and LDPE added thereto is thermally melted, and then a second laminated layer is formed on the back surface side of the first laminated layer by extrusion molding or the like.
  • the pressure-sensitive adhesive composition separately mixed and prepared is applied to the surface of the base fabric opposite to the laminated layer to form the pressure-sensitive adhesive layer.
  • the surface of the base cloth on which the pressure-sensitive adhesive layer is formed may be physically or chemically anchored in order to improve the adhesion between the base cloth and the pressure-sensitive adhesive layer.
  • 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. ..
  • the adhesive layer can be formed using various coating devices.
  • the coating device include a calendar processing machine, a roll coater, a die coater, a lip coater, a Meyer bar coater, a gravure coater, and the like.
  • FIGS. 3 (a) to 3 (c) These schematically show the cross section (weft cross section) in the weft orientation direction, and the warp 6 (woolly processed yarn 3) is shown in a simplified manner.
  • FIG. 3 (a) shows a configuration in which a false twisted yarn 7 is used as a weft
  • FIG. 3 (b) shows a configuration in which a woolly processed yarn 8 is used as a weft
  • FIG. 3 (c) shows a flat yarn 9 as a weft.
  • the configuration used is described.
  • FIG. 4 schematically shows a cross section (warp cross section) in the warp orientation direction of the adhesive tape 20 using two laminated layers as the laminating layer, which is another embodiment of the present invention.
  • the adhesive tape 20 has a base cloth 14 composed of warp threads 12 and warp threads 13, a laminate layer 15 arranged on one surface of the base cloth 14, and an adhesive layer arranged on the other side of the base cloth 14. It is composed of 16.
  • the laminated layer 15 is composed of a first laminated layer 17 made of a mixture of LDPE and EVA or EEA, and a second laminated layer 18 made of a mixture of HDPE and LDPE.
  • FIG. 4 an example in which the back surface treatment layer 19 is formed on the surface of the second laminated layer, which is the back surface side 20B of the adhesive tape 20, is described.
  • the manufactured adhesive tape is wound into a roll and cut to a predetermined width, and then the side surface is protected with a packaging material such as a polyethylene film or stored in an individual polyethylene film package to make the adhesive adhesive. It can be packed in a box with the side surface of the tape prevented from coming into contact with other adhesive tapes or packing materials.
  • a packaging material such as a polyethylene film or stored in an individual polyethylene film package to make the adhesive adhesive. It can be packed in a box with the side surface of the tape prevented from coming into contact with other adhesive tapes or packing materials.
  • the present invention will be specifically described with reference to Examples. However, the present invention is not limited to these examples.
  • the physical property values of each raw material are the published values such as the manufacturer's catalog values.
  • the resin materials used in Examples and Comparative Examples are as follows. LDPE: Product name "NUC8000", HDPE manufactured by Nippon Unicar Co., Ltd. HDPE: Product name "NUC8009”, EVA: Product name "E181L” manufactured by Japan Unicar Co., Ltd. EEA: Product name "EA101” manufactured by Dow Chemical Co., Ltd.
  • Example A1 A polyethylene terephthalate (PET) woolly processed yarn with a fineness of 30 denier and 36 filaments is used as the warp, and a PET false plying yarn with a fineness of 100 denier and 48 filaments is used as the weft.
  • PET polyethylene terephthalate
  • a plain woven fabric was made with a density of books / inch and used as a base cloth. Low-density polyethylene was laminated on one surface of this base fabric using an extruded laminator to form a laminated layer.
  • the adhesive is 100 parts by mass of natural rubber (RSS # 3) kneaded with a kneader, 160 parts by mass of heavy calcium carbonate (manufactured by Maruo Calcium Co., Ltd., average particle diameter 12 ⁇ m) as a filler, and process oil (EMG) as a plasticizer.
  • Lubricants Co., Ltd., trade name "Mobiletherm 610” 30 parts by mass, aliphatic hydrocarbon resin as adhesive-imparting resin (Nippon Zeon Co., Ltd., trade name "Quinton (registered trademark) R100") 100 parts by mass and promotion of kneading A total of 1 part by mass of the agent and the antiaging agent were added, and these were mixed and adjusted.
  • This adhesive was applied to the surface opposite to the surface on which the laminated layer of the base cloth was formed using a calendar coating machine to form an adhesive layer to obtain an adhesive tape having a total thickness of 140 ⁇ m.
  • the amount of resin used to prevent the base cloth from appearing on the surface of the laminated layer is 40 g / m 2
  • the amount of adhesive used to prevent the base cloth from appearing on the surface of the pressure-sensitive adhesive layer is 40 g / m 2. It was 110 g / m 2 .
  • Example A2 Adhesive tape with a total thickness of 140 ⁇ m was applied in the same manner as in Example A1 except that a long-chain alkyl mold release agent (manufactured by Lion Specialty Chemicals Co., Ltd., trade name “Peroyl 1010”) was applied to the back surface of the laminated layer. Obtained.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 110 g / m 2 .
  • Example A3 An adhesive tape having a total thickness of 140 ⁇ m was obtained in the same manner as in Example A1 except that the base cloth before forming the laminated layer was subjected to corona treatment.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 110 g / m 2 .
  • Example A4 The base fabric before forming the laminate layer was subjected to corona treatment as an anchor treatment, and a long-chain alkyl mold release agent (manufactured by Lion Specialty Chemicals Co., Ltd., trade name "Peroyl 1010") was applied to the back side of the laminate layer.
  • An adhesive tape having a total thickness of 140 ⁇ m was obtained in the same manner as in Example A1 except for the above.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 110 g / m 2 .
  • Example A5 An adhesive tape having a total thickness of 130 ⁇ m was obtained in the same manner as in Example A4 except that a PET woolly processed yarn having a fineness of 100 denier and 48 filaments was used as the weft.
  • the amount of resin used to form the laminate layer was 35 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 90 g / m 2 .
  • Example A6 An adhesive tape having a total thickness of 140 ⁇ m was obtained in the same manner as in Example A4 except that a false twisted yarn made of HDPE having a fineness of 100 denier and 48 filaments was used as the weft.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 110 g / m 2 .
  • Example A7 An adhesive tape having a total thickness of 135 ⁇ m was obtained in the same manner as in Example A4 except that HDPE flat yarn having a fineness of 300 denier was used as a weft at a density of 17 threads per inch.
  • the amount of resin used to form the laminate layer was 35 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 100 g / m 2 .
  • Example A8 As an adhesive, EPDM (manufactured by Sumitomo Chemical Co., Ltd., trade name "Esplen # 301”) 100 parts by mass, heavy calcium carbonate (manufactured by Maruo Calcium Co., Ltd., average particle size 12 ⁇ m) 170 parts by mass, naphthenic process oil (Nippon Sun Oil Co., Ltd.) 15 parts by mass of product name "SUNTHENE 4240”), 30 parts by mass of aliphatic hydrocarbon resin (manufactured by Nippon Zeon, product name "Quinton (registered trademark) N180”) and kneading accelerator, lubricant and anti-aging agent A total of 2 parts by mass was added, and an adhesive tape having a total thickness of 135 ⁇ m was obtained in the same manner as in Example A5 except that a mixture thereof was used.
  • the amount of resin used to form the laminate layer was 35 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was
  • Example A9 As an adhesive, 70 parts by mass of natural rubber (RSS # 3), 30 parts by mass of EPDM (manufactured by Sumitomo Chemical Co., Ltd., trade name "Esplen # 301”), heavy calcium carbonate (manufactured by Maruo Calcium Co., Ltd., average particle diameter 12 ⁇ m) 170 By mass, 15 parts by mass of naphthenic process oil (manufactured by Nippon Sun Oil Co., Ltd., trade name "SUNTHENE4240”), 30 parts by mass of aliphatic hydrocarbon resin (manufactured by Nippon Zeon Co., Ltd., trade name "Quinton (registered trademark) N180”) A total of 2 parts by mass of a kneading accelerator, a lubricant and an antioxidant were added, and a mixture thereof was used in the same manner as in Example A5 to obtain an adhesive tape having a total thickness of 135 ⁇ m. The amount of resin used to form the laminate layer was 35
  • Example A10 An adhesive tape having a total thickness of 120 ⁇ m was obtained in the same manner as in Example A5 except that a PET woolly processed yarn having a fineness of 15 denier and 12 filaments was used as the warp.
  • the amount of resin used to form the laminated layer was 30 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 100 g / m 2 .
  • Example A11 An adhesive tape having a total thickness of 140 ⁇ m was obtained in the same manner as in Example A5 except that a PET woolly processed yarn having a fineness of 75 denier and 48 filaments was used as the warp.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 100 g / m 2 .
  • Example A12 An adhesive tape having a total thickness of 140 ⁇ m was obtained in the same manner as in Example A5 except that a PET woolly processed yarn having a fineness of 75 denier and 24 filaments was used as the warp.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 115 g / m 2 .
  • Example A13 An adhesive tape having a total thickness of 130 ⁇ m was obtained in the same manner as in Example A5 except that the warp density was set to 20 threads / inch.
  • the amount of resin used to form the laminated layer was 35 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 110 g / m 2 .
  • Example A14 An adhesive tape having a total thickness of 150 ⁇ m was obtained in the same manner as in Example A5 except that the warp density was 150 threads / inch.
  • the amount of resin used to form the laminate layer was 35 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 95 g / m 2 .
  • Example A15 A PET woolly processed yarn with a fineness of 30 denier and 36 filaments is used as the warp, and an HDPE false plying yarn with a fineness of 100 denier and 48 filaments is used as the weft.
  • As the density we knit a vertical knitted fabric in which the warp is an independent chain knit.
  • An adhesive tape having a total thickness of 140 ⁇ m was obtained in the same manner as in Example A6 except that this vertical knitted fabric was used as a base cloth.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 110 g / m 2 .
  • Example A16 A PET woolly processed yarn with a fineness of 30 denier and 36 filaments is used as the warp, and a PET woolly processed yarn with a fineness of 100 denier and 48 filaments is used as the weft.
  • a plain woven fabric was made with the density of the above and used as a base cloth.
  • High-density polyethylene was laminated on one surface of the base fabric using an extruded laminator, and low-density polyethylene was further laminated on the high-density polyethylene using an extruded laminator to form a laminated layer.
  • the same adhesive as in Example A1 was applied to the other surface of the base cloth using a calendar coating machine to form an adhesive layer to obtain an adhesive tape having a total thickness of 130 ⁇ m.
  • the total amount of resin used to prevent the base cloth from appearing on the surface of the laminated layer is 35 g / m 2
  • the amount of adhesive used to prevent the base cloth from appearing on the surface of the adhesive layer. was 90 g / m 2 .
  • Comparative Example A3 An adhesive tape having a total thickness of 145 ⁇ m was obtained in the same manner as in Example A4 except that a PET falsely twisted yarn having a fineness of 30 denier and 36 filaments was used as the warp.
  • the amount of resin used to form the laminated layer was 45 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 110 g / m 2 .
  • Comparative Example A4 An adhesive tape having a total thickness of 130 ⁇ m was obtained in the same manner as in Example A4 except that a PET falsely twisted yarn having a fineness of 15 denier and 12 filaments was used as the warp.
  • the amount of resin used to form the laminate layer was 35 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 100 g / m 2 .
  • Comparative Example A5 An adhesive tape having a total thickness of 150 ⁇ m was obtained in the same manner as in Example A4 except that a woolly processed yarn made of 6 nylon (PA6) having a fineness of 30 denier and 12 filaments was used as the warp.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 115 g / m 2 .
  • Comparative Example A6 Same as Example A5 except that 0.2 g of a curing agent (Soken Kagaku, L45) was added per 100 g of an acrylic pressure-sensitive adhesive (Soken Kagaku, SK Dyne 702L) and the viscosity was adjusted with ethyl acetate. An adhesive tape having a layer thickness of 125 ⁇ m was obtained. The amount of resin used to form the laminated layer was 38 g / m 2 , and the amount of adhesive used to form the pressure-sensitive adhesive layer was 63 g / m 2 .
  • a curing agent Soken Kagaku, L45
  • an acrylic pressure-sensitive adhesive Soken Kagaku, SK Dyne 702L
  • Reference example A1 A PET woolly processed yarn having a fineness of 100 denier and 96 filaments was used as the warp, and an adhesive tape having a total thickness of 160 ⁇ m was obtained in the same manner as in Example A4 except that the density of the warp was 60 yarns / inch.
  • the amount of resin used to form the laminate layer was 55 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 125 g / m 2 .
  • Reference example A2 A PET woolly processed yarn having a fineness of 100 denier and 24 filaments was used as the warp, and an adhesive tape having a total thickness of 170 ⁇ m was obtained in the same manner as in Example A4 except that the density of the warp was 60 yarns / inch.
  • the amount of resin used to form the laminated layer was 60 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 130 g / m 2 .
  • Reference example A3 A PET woolly processed yarn having a fineness of 36 denier and a filament number of 36 was used as the warp, and an adhesive tape having a total thickness of 130 ⁇ m was obtained in the same manner as in Example A4 except that the density of the warp was 15 yarns / inch.
  • the amount of resin used to form the laminated layer was 40 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 100 g / m 2 .
  • Reference example A4 A PET woolly processed yarn having a fineness of 15 denier and 12 filaments was used as the warp, and an adhesive tape having a total thickness of 160 ⁇ m was obtained in the same manner as in Example A4 except that the density of the warp was 190 yarns / inch.
  • the amount of resin used to form the laminated layer was 50 g / m 2
  • the amount of adhesive used to form the pressure-sensitive adhesive layer was 120 g / m 2 .
  • a measurement sample was prepared according to the method for measuring the adhesive strength of JIS Z 0237: 2009. After storing this sample in an atmosphere of a temperature of 23 ⁇ 1 ° C. and a relative humidity of 50 ⁇ 5% for 72 hours, the adhesive tape was removed from the test plate by the same method as the method of measuring the adhesive strength by peeling 180 ° to the test plate. It was peeled off. The test plate after peeling was visually observed, the number of test pieces to which the adhesive was attached was counted, and the evaluation was performed based on the following criteria.
  • Example B1 A polyethylene terephthalate (PET) woolly processed yarn with a fineness of 30 denier and 36 filaments is used as the warp, and a PET false plying yarn with a fineness of 100 denier and 48 filaments is used as the weft.
  • a plain woven fabric was made with a density of books / inch and used as a base cloth. After corona-treating one surface of this base cloth, a mixed resin of 80 parts by mass of LDPE and 20 parts by mass of EVA (hereinafter referred to as composition ratio 80:20) is applied to the corona-treated surface using an extruded laminator in a resin amount of 27 g / The first laminated layer was formed by laminating at m2 .
  • composition ratio 80:20 a mixed resin of 80 parts by mass of LDPE and 20 parts by mass of EVA
  • a long-chain alkyl release agent (manufactured by Lion Specialty Chemicals Co., Ltd., trade name "Peroyl 1010" was applied to the surface of the layer to form a back surface treatment layer.
  • the adhesive is 100 parts by mass of kneaded natural rubber (RSS # 3), 160 parts by mass of heavy calcium carbonate (manufactured by Maruo Calcium Co., Ltd., average particle size 12 ⁇ m) as a filler, and process oil (EMG Lubricants) as a plasticizer.
  • RSS # 3 kneaded natural rubber
  • heavy calcium carbonate manufactured by Maruo Calcium Co., Ltd., average particle size 12 ⁇ m
  • EMG Lubricants process oil
  • Example B7 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B2 except that the amount of resin in the first laminated layer was 20 g / m 2 and the amount of resin in the second laminated layer was 20 g / m 2 .
  • Example B8 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B2 except that the amount of resin in the first laminated layer was 10 g / m 2 and the amount of resin in the second laminated layer was 30 g / m 2 .
  • Example B9 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B2 except that the amount of resin in the first laminated layer was 30 g / m 2 and the amount of resin in the second laminated layer was 10 g / m 2 .
  • Example B10 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B2 except that the amount of resin in the first laminated layer was 33 g / m 2 and the amount of resin in the second laminated layer was 7 g / m 2 .
  • Example B11 The same as in Example 2 except that the amount of resin in the first laminated layer was 24 g / m 2 , the amount of resin in the second laminated layer was 11 g / m 2 , and the total amount of resin in the laminated layer was 35 g / m 2 . , An adhesive tape having a total thickness of 135 ⁇ m was prepared.
  • Example B12 The same as in Example B2 except that the amount of resin in the first laminated layer was 30 g / m 2 , the amount of resin in the second laminated layer was 15 g / m 2 , and the total amount of resin in the laminated layer was 45 g / m 2 . , An adhesive tape having a total thickness of 150 ⁇ m was prepared.
  • Example B13 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B1 except that the amount of resin in the first laminated layer was 5 g / m 2 and the amount of resin in the second laminated layer was 35 g / m 2 .
  • Example B14 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B1 except that the amount of resin in the first laminated layer was 35 g / m 2 and the amount of resin in the second laminated layer was 5 g / m 2 .
  • Example B15 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B1 except that the amount of resin in the first laminated layer was 20 g / m 2 and the amount of resin in the second laminated layer was 10 g / m 2 .
  • Comparative Example B1 A polyethylene terephthalate (PET) woolly processed yarn with a fineness of 30 denier and 36 filaments is used as the warp, and a PET false plying yarn with a fineness of 100 denier and 48 filaments is used as the weft.
  • PET polyethylene terephthalate
  • a plain woven fabric was made with a density of books / inch and used as a base cloth. After corona-treating one surface of the base fabric, LDPE was laminated on the corona-treated surface with a resin amount of 40 g / m 2 using an extruded laminator to form a laminated layer.
  • a long-chain alkyl mold release agent (manufactured by Lion Specialty Chemicals Co., Ltd., trade name "Peroyl 1010" was applied to the surface of the laminated layer to form a back surface treatment layer.
  • the adhesive is 100 parts by mass of natural rubber (RSS # 3) kneaded with a kneader, 160 parts by mass of heavy calcium carbonate (manufactured by Maruo Calcium Co., Ltd., average particle size 12 ⁇ m) as a filler, and process oil (EMG) as a plasticizer.
  • Lubricants Co., Ltd., trade name "Mobiletherm 610” 30 parts by mass, aliphatic hydrocarbon resin as adhesive-imparting resin (Nippon Zeon Co., Ltd., trade name “Quinton (registered trademark) R100") 100 parts by mass and promotion of kneading A total of 1 part by mass of the agent and the antiaging agent were added, and these were mixed and adjusted.
  • This adhesive was applied to the surface opposite to the surface on which the laminated layer of the base fabric was formed using a calendar coating machine to form an adhesive layer, and an adhesive tape having a total thickness of 135 ⁇ m was produced.
  • Comparative Example B2 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Comparative Example B1 except that the LDPE used for the laminated layer was HDPE.
  • Comparative Example B3 The same as in Comparative Example B1 except that the laminated layer was formed by laminating LDPE on the corona-treated surface of the base cloth at a resin amount of 27 g / m 2 and then further laminating LDPE at a resin amount of 13 g / m 2 . , An adhesive tape having a total thickness of 140 ⁇ m was prepared.
  • Comparative Example B4 Similar to Comparative Example B1 except that a laminated layer was formed by laminating LDPE on the corona-treated surface of the base cloth at a resin amount of 27 g / m 2 and then further laminating HDPE at a resin amount of 13 g / m 2 . , An adhesive tape having a total thickness of 140 ⁇ m was prepared.
  • Comparative Example B5 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B2 except that the resin of the second laminated layer was only HDPE.
  • Comparative Example B6 An adhesive tape having a total thickness of 140 ⁇ m was produced in the same manner as in Example B1 except that the resin of the first laminated layer was only LDPE.
  • a test piece having a width of 25 mm ⁇ 200 mm is collected from the adhesive tape base material laminated on the base cloth. Peel off the base cloth and the laminated layer of the test piece from the end by about 75 mm, and grasp the base cloth side by about 25 mm on the upper chuck of the tensile tester (JIS B 7721). The laminate was pulled at a gripping interval of 100 mm and a tensile speed of 300 ⁇ 30 mm / min, and the weight of the laminated layer peeling off from the base fabric was measured.
  • the laminating adhesive strength is higher than that of Comparative Examples B1 to B4 and B6, and even when the laminated layers are not arranged on both sides of the base cloth, the laminated cloth and the base cloth are used. It can be seen that the laminate layer is firmly bonded.

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  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
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  • Chemical Kinetics & Catalysis (AREA)
  • Adhesive Tapes (AREA)
  • Organic Insulating Materials (AREA)
  • Decoration Of Textiles (AREA)
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JPS6321950A (ja) * 1986-07-10 1988-01-29 帝人株式会社 粘着テ−プ用基布
JPH11279876A (ja) * 1998-03-27 1999-10-12 Toray Ind Inc 粘着テープ基布用原糸及びその製造方法、並びに粘着テープ
JP2005126522A (ja) * 2003-10-22 2005-05-19 Nitto Denko Corp 防水気密用粘着テープ
JP2012097155A (ja) * 2010-10-29 2012-05-24 Teraoka Seisakusho:Kk 粘着テープ
JP2012097373A (ja) * 2010-11-02 2012-05-24 Toray Ind Inc 粘着テープ用基布
JP2014139299A (ja) * 2012-12-21 2014-07-31 Nitto Denko Corp 粘着テープ
JP2015203032A (ja) * 2014-04-10 2015-11-16 電気化学工業株式会社 養生テープ

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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
EP3608380A4 (en) * 2017-04-03 2021-01-06 Lintec Corporation HIGH FREQUENCY DIELECTRIC HEATING ADHESIVE SHEET, AND ADHESION PROCESS IN WHICH IT IS USED

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JPS6321950A (ja) * 1986-07-10 1988-01-29 帝人株式会社 粘着テ−プ用基布
JPH11279876A (ja) * 1998-03-27 1999-10-12 Toray Ind Inc 粘着テープ基布用原糸及びその製造方法、並びに粘着テープ
JP2005126522A (ja) * 2003-10-22 2005-05-19 Nitto Denko Corp 防水気密用粘着テープ
JP2012097155A (ja) * 2010-10-29 2012-05-24 Teraoka Seisakusho:Kk 粘着テープ
JP2012097373A (ja) * 2010-11-02 2012-05-24 Toray Ind Inc 粘着テープ用基布
JP2014139299A (ja) * 2012-12-21 2014-07-31 Nitto Denko Corp 粘着テープ
JP2015203032A (ja) * 2014-04-10 2015-11-16 電気化学工業株式会社 養生テープ

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KR20230074808A (ko) 2023-05-31
CN116323192A (zh) 2023-06-23
JP7525632B2 (ja) 2024-07-30
JPWO2022075201A1 (zh) 2022-04-14
TWI816189B (zh) 2023-09-21
TW202223040A (zh) 2022-06-16

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