JP6177643B2 - Adhesive tape for fixing articles - Google Patents
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- JP6177643B2 JP6177643B2 JP2013204260A JP2013204260A JP6177643B2 JP 6177643 B2 JP6177643 B2 JP 6177643B2 JP 2013204260 A JP2013204260 A JP 2013204260A JP 2013204260 A JP2013204260 A JP 2013204260A JP 6177643 B2 JP6177643 B2 JP 6177643B2
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- 239000002390 adhesive tape Substances 0.000 title claims description 36
- 229920005989 resin Polymers 0.000 claims description 41
- 239000011347 resin Substances 0.000 claims description 41
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 36
- 239000010410 layer Substances 0.000 claims description 31
- 229920001971 elastomer Polymers 0.000 claims description 21
- 229920003049 isoprene rubber Polymers 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 20
- 150000002978 peroxides Chemical class 0.000 claims description 17
- 239000005060 rubber Substances 0.000 claims description 14
- -1 softener Substances 0.000 claims description 14
- 244000043261 Hevea brasiliensis Species 0.000 claims description 13
- 229920003052 natural elastomer Polymers 0.000 claims description 13
- 229920001194 natural rubber Polymers 0.000 claims description 13
- 239000003208 petroleum Substances 0.000 claims description 11
- 239000003431 cross linking reagent Substances 0.000 claims description 10
- 125000002723 alicyclic group Chemical group 0.000 claims description 7
- 239000000806 elastomer Substances 0.000 claims description 7
- 239000012948 isocyanate Substances 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 5
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 4
- 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 claims description 4
- 125000001931 aliphatic group Chemical group 0.000 claims description 4
- 239000003822 epoxy resin Substances 0.000 claims description 4
- 125000000524 functional group Chemical group 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229920000647 polyepoxide Polymers 0.000 claims description 4
- 150000003505 terpenes Chemical class 0.000 claims description 4
- 235000007586 terpenes Nutrition 0.000 claims description 4
- 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 claims description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 3
- 239000003086 colorant Substances 0.000 claims description 3
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims description 3
- 229920002799 BoPET Polymers 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 230000003078 antioxidant effect Effects 0.000 claims description 2
- 239000007822 coupling agent Substances 0.000 claims description 2
- 239000012760 heat stabilizer Substances 0.000 claims description 2
- 239000011256 inorganic filler Substances 0.000 claims description 2
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 2
- 239000004611 light stabiliser Substances 0.000 claims description 2
- 239000012766 organic filler Substances 0.000 claims description 2
- 239000004014 plasticizer Substances 0.000 claims description 2
- 239000003755 preservative agent Substances 0.000 claims description 2
- 230000002335 preservative effect Effects 0.000 claims description 2
- 239000004094 surface-active agent Substances 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims 1
- 239000011976 maleic acid Substances 0.000 claims 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 31
- 230000001070 adhesive effect Effects 0.000 description 31
- 230000000052 comparative effect Effects 0.000 description 23
- 238000011109 contamination Methods 0.000 description 15
- 239000000203 mixture Substances 0.000 description 7
- 229920000139 polyethylene terephthalate Polymers 0.000 description 6
- 239000005020 polyethylene terephthalate Substances 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001451 organic peroxides Chemical class 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 239000004743 Polypropylene Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- 229920001155 polypropylene Polymers 0.000 description 3
- 239000004800 polyvinyl chloride Substances 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 2
- 238000003851 corona treatment Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- YKTNISGZEGZHIS-UHFFFAOYSA-N 2-$l^{1}-oxidanyloxy-2-methylpropane Chemical group CC(C)(C)O[O] YKTNISGZEGZHIS-UHFFFAOYSA-N 0.000 description 1
- XMNIXWIUMCBBBL-UHFFFAOYSA-N 2-(2-phenylpropan-2-ylperoxy)propan-2-ylbenzene Chemical compound C=1C=CC=CC=1C(C)(C)OOC(C)(C)C1=CC=CC=C1 XMNIXWIUMCBBBL-UHFFFAOYSA-N 0.000 description 1
- KRDXTHSSNCTAGY-UHFFFAOYSA-N 2-cyclohexylpyrrolidine Chemical compound C1CCNC1C1CCCCC1 KRDXTHSSNCTAGY-UHFFFAOYSA-N 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- YIVJZNGAASQVEM-UHFFFAOYSA-N Lauroyl peroxide Chemical compound CCCCCCCCCCCC(=O)OOC(=O)CCCCCCCCCCC YIVJZNGAASQVEM-UHFFFAOYSA-N 0.000 description 1
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 1
- SCKXCAADGDQQCS-UHFFFAOYSA-N Performic acid Chemical group OOC=O SCKXCAADGDQQCS-UHFFFAOYSA-N 0.000 description 1
- 241001136629 Pixus Species 0.000 description 1
- 229920002845 Poly(methacrylic acid) Polymers 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- MZZSDCJQCLYLLL-UHFFFAOYSA-N Secalonsaeure A Natural products COC(=O)C12OC3C(CC1=C(O)CC(C)C2O)C(=CC=C3c4ccc(O)c5C(=O)C6=C(O)CC(C)C(O)C6(Oc45)C(=O)OC)O MZZSDCJQCLYLLL-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
本発明は、物品の固定に用いられる粘着テープに関し、特には物品の仮止めに要求される優れた粘着力を有し、かつテープ剥離時の被着体である製品の汚染性が排除または低減された粘着テープに関する。 The present invention relates to an adhesive tape used for fixing an article, and in particular, has excellent adhesive force required for temporarily fixing an article and eliminates or reduces the contamination of a product that is an adherend when the tape is peeled off. It is related with the made adhesive tape.
家電やOA機器等の製品の梱包には、可動部の仮止めや梱包材節約の目的から、粘着テープを当該製品に直接貼付する梱包形態が過去から広く採用されている。この用途に使用する粘着テープには、物品を強く固定する粘着力と、目的を果たした後には、被着体である製品の汚染無く、きれいに剥がすことのできる再剥離性との相反する性能が求められる。 For packaging of products such as home appliances and office automation equipment, a packaging form in which an adhesive tape is directly attached to the product has been widely adopted for the purpose of temporarily fixing movable parts and saving packaging materials. Adhesive tape used for this application has the contradictory performance of adhesive strength to firmly fix the article and re-peelability that can be removed cleanly after the purpose has been achieved without contamination of the adherend product. Desired.
過去には、粘着剤中の成分の配合の検討により、上記物性を両立するテープが発明(特許文献1および特許文献2)および上市されている。しかし、これらのテープは価格が高いため、性能を満足しないが安価に購入可能な粘着テープが使用されているのも現実である。 In the past, inventions (Patent Document 1 and Patent Document 2) and tapes that are compatible with the above physical properties have been put on the market by investigating the blending of components in an adhesive. However, since these tapes are expensive, it is a reality that an adhesive tape that does not satisfy the performance but can be purchased at a low cost is used.
昨今、生産工場の海外移転・集約等が進み、中国を初めとするアジア地区で生産された製品が全世界に輸送されている現状を鑑みると、テープに求められる性能、特に再剥離性は、日本国内での生産、輸送のみを考えた場合よりも高い水準が求められてきている。 Considering the current situation where production plants have moved overseas and consolidated, etc., and products manufactured in Asia, including China, are being transported around the world, the performance required for tapes, especially removability, There has been a demand for a higher level than when considering only production and transportation in Japan.
本発明では、物品の仮止め固定に要求される強い粘着力を有し、アジア、北米、および欧州を含む世界に輸送された後にテープを剥離した時の被着体への糊残り等の汚染性が排除または低減された物品固定用粘着テープを提供することを目的とする。 In the present invention, it has a strong adhesive force required for temporarily fixing an article, and contamination such as adhesive residue on the adherend when the tape is peeled after being transported to the world including Asia, North America and Europe. An object of the present invention is to provide an adhesive tape for fixing an article whose property is eliminated or reduced.
本発明者の物品固定用粘着テープは、上記課題を達成すべく考え出されたものである。 The pressure-sensitive adhesive tape for fixing an article of the present inventor has been conceived to achieve the above-mentioned problems.
すなわち、本発明は以下の通りである。
(1)主成分としてのエラストマーであって、天然ゴム50〜80重量部および分子中に過酸化物を有する液状イソプレンゴム20〜45重量部を含むエラストマーと、粘着付与樹脂50〜100重量部と、架橋剤0.1〜1.0重量部とを含有する粘着剤層と支持体とを備えた物品固定用粘着テープ。
(2)粘着付与樹脂が、軟化点125℃以上の脂環族石油樹脂40〜90重量部と、軟化点125℃以下の脂肪族石油樹脂、脂環族石油樹脂、テルペン樹脂、およびロジン樹脂からなる群より選択された少なくとも1種類以上の樹脂5〜10重量部とを含む(1)に記載の粘着テープ。
(3)粘着剤層と支持体の間に、官能基を有する天然ゴム100重量部に対し、イソシアネート化合物80〜120重量部を含有する下塗り層をさらに備えた(1)または(2)に記載の粘着テープ。
(4)架橋剤がエポキシ樹脂である(1)〜(3)の何れかに一項に記載の粘着テープ。
(5)支持体がPETフィルムである、(1)〜(4)の何れか一項に記載の粘着テープ。
(6)過酸化物を有する液状イソプレンゴムが、無水マレイン酸変性物及びカルボン酸変性物を含む、請求項(1)〜(5)の何れか一項に記載の粘着テープ。
(7)過酸化物を有する液状イソプレンゴムに対する無水マレイン酸変性ゴム及びカルボン酸変性ゴムの配合割合が、無水マレイン酸変性ゴム30〜50重量%、カルボン酸変性ゴム50〜70重量%である(6)に記載の粘着テープ。
That is, the present invention is as follows.
(1) An elastomer as a main component, comprising 50 to 80 parts by weight of natural rubber and 20 to 45 parts by weight of liquid isoprene rubber having a peroxide in the molecule, and 50 to 100 parts by weight of a tackifier resin A pressure-sensitive adhesive tape for fixing an article comprising a pressure-sensitive adhesive layer containing 0.1 to 1.0 part by weight of a crosslinking agent and a support.
(2) The tackifying resin is composed of 40 to 90 parts by weight of an alicyclic petroleum resin having a softening point of 125 ° C. or higher and an aliphatic petroleum resin, alicyclic petroleum resin, terpene resin, and rosin resin having a softening point of 125 ° C. or lower. The pressure-sensitive adhesive tape according to (1), comprising 5 to 10 parts by weight of at least one kind of resin selected from the group consisting of:
(3) (1) or (2) further comprising an undercoat layer containing 80 to 120 parts by weight of an isocyanate compound with respect to 100 parts by weight of a natural rubber having a functional group between the pressure-sensitive adhesive layer and the support. Adhesive tape.
(4) The adhesive tape according to any one of (1) to (3), wherein the crosslinking agent is an epoxy resin.
(5) The adhesive tape according to any one of (1) to (4), wherein the support is a PET film.
(6) The pressure-sensitive adhesive tape according to any one of claims (1) to (5), wherein the liquid isoprene rubber having a peroxide contains a maleic anhydride modified product and a carboxylic acid modified product.
(7) The blending ratio of maleic anhydride-modified rubber and carboxylic acid-modified rubber to liquid isoprene rubber having a peroxide is 30 to 50% by weight of maleic anhydride-modified rubber and 50 to 70% by weight of carboxylic acid-modified rubber ( The adhesive tape as described in 6).
本発明によれば、物品の仮止め固定に要求される強い粘着力を有し、かつテープを剥離した時の被着体汚染性が排除または低減された物品固定用粘着テープが提供される。 ADVANTAGE OF THE INVENTION According to this invention, it has the strong adhesive force requested | required for temporary fixing of articles | goods, and the adhesive tape for fixed articles | goods by which the to-be-adhered body contamination | contamination property when peeling a tape was excluded or reduced is provided.
本発明の実施形態を図1を参照しながら説明する。 An embodiment of the present invention will be described with reference to FIG.
本発明の1実施形態の物品仮固定用粘着シート10は、支持体12と、支持体12の少なくとも片面に積層された粘着剤層14と、支持体12と粘着剤層14の間に積層された下塗り層16とを備える。 The pressure-sensitive adhesive sheet 10 for temporarily fixing an article according to an embodiment of the present invention is laminated between a support 12, an adhesive layer 14 laminated on at least one side of the support 12, and the support 12 and the adhesive layer 14. And an undercoat layer 16.
粘着シート10の基材としての支持体12は、通常使用される公知の合成樹脂からなるフィルムが挙げられ、かかる樹脂は例えば、ポリエチレン(PE)、ポリプロピレン(PP)、延伸ポリプロピレン(OPP)、ポリエステル、ポリエチレンテレフタレート(PET)、ポリ塩化ビニル(PVC)、ポリエチレンナフタレート(PEN)、ポリフェニレンスルフィド、エチレン−ビニルアセテート共重合体(EVA)等であり、またこれらのブレンド物も含まれる。支持体12がポリエステル、特にポリエチレンテレフタレート(PET)フィルムである場合、機械的強度に優れており、被着性汚染が生じず好ましい。 Examples of the support 12 as a base material of the pressure-sensitive adhesive sheet 10 include a film made of a commonly used synthetic resin. Examples of such a resin include polyethylene (PE), polypropylene (PP), stretched polypropylene (OPP), and polyester. Polyethylene terephthalate (PET), polyvinyl chloride (PVC), polyethylene naphthalate (PEN), polyphenylene sulfide, ethylene-vinyl acetate copolymer (EVA), and the like, and blends thereof are also included. When the support 12 is a polyester, particularly a polyethylene terephthalate (PET) film, it is preferable because it has excellent mechanical strength and does not cause adherent contamination.
支持体12の厚みは特に限定されないが、通常10〜100μm程度であり、好ましくは30μm〜60μmの範囲のものを用いると、家電製品の部品等を確実に仮止めできるので好ましい。厚みが30μm未満のポリエステルフィルムでは切れ易く、家電製品の部品を確実に仮固定するのに強度が不足し、60μmを超えると鋼性が高くて扱い難く、コストが高くなる。支持体12の表面は、必要に応じてコロナ放電処理等の表面処理を施したり、またはプライマー層を設けたりしてもよい。 Although the thickness of the support 12 is not particularly limited, it is usually about 10 to 100 μm, preferably 30 μm to 60 μm, since it is possible to reliably temporarily fix parts of home appliances and the like. Polyester films with a thickness of less than 30 μm are easy to cut, and the strength is insufficient to reliably temporarily fix parts of home appliances. When the thickness exceeds 60 μm, the steel is high and difficult to handle, and the cost increases. The surface of the support 12 may be subjected to a surface treatment such as a corona discharge treatment or a primer layer as necessary.
粘着剤層14は、エラストマーを主成分とし、天然ゴム50〜80重量部および分子中に過酸化物を有する液状イソプレンゴム20〜45重量部を含むエラストマーと、粘着付与樹脂50〜100重量部と、架橋剤0.1〜1.0重量部とを含有する。 The pressure-sensitive adhesive layer 14 is composed mainly of an elastomer, an elastomer containing 50 to 80 parts by weight of natural rubber and 20 to 45 parts by weight of a liquid isoprene rubber having a peroxide in the molecule, and 50 to 100 parts by weight of a tackifier resin. And 0.1 to 1.0 part by weight of a crosslinking agent.
天然ゴムの添加量は50〜80重量部、好ましくは55〜80重量部であり、50重量部未満または80重量部を超えると、被着体汚染性が不良となる。 The amount of natural rubber added is 50 to 80 parts by weight, preferably 55 to 80 parts by weight. When the amount is less than 50 parts by weight or exceeds 80 parts by weight, the adherend contamination becomes poor.
分子中に過酸化物を有する液状イソプレンゴムの添加により、天然ゴムを主成分とする粘着テープにおいて、天然ゴム架橋(加硫)に通常用いる硫黄や過酸化物を使用することなく、また架橋構造を得るために必要とされる高温(120℃以上)での養生も必要とせず、常温常湿の保管環境での架橋が可能となる。 By adding liquid isoprene rubber with peroxide in the molecule, the adhesive tape based on natural rubber does not use sulfur or peroxide that is usually used for natural rubber cross-linking (vulcanization). It does not require curing at a high temperature (120 ° C. or higher) required to obtain a product, and enables crosslinking in a storage environment at room temperature and humidity.
分子中に過酸化物を有する液状イソプレンゴムの添加量は20〜45重量部であり、20重量部未満であるとボールタックが不良であり、45重量部を超えると落下耐性が不良となる。分子中に過酸化物を有する液状イソプレンゴムの例には株式会社クラレの商品名LIR−403(1分子あたりの平均としてカルボキシル基を3個有する数平均分子量が20,000の変性ポリイソプレン)が挙げられる。 The addition amount of the liquid isoprene rubber having a peroxide in the molecule is 20 to 45 parts by weight. If it is less than 20 parts by weight, the ball tack is poor, and if it exceeds 45 parts by weight, the drop resistance is poor. An example of a liquid isoprene rubber having a peroxide in the molecule is Kuraray Co., Ltd., trade name LIR-403 (modified polyisoprene having a number average molecular weight of 20,000 having three carboxyl groups as an average per molecule). Can be mentioned.
なお、分子中に過酸化物を有するとは、分子中にペルオキシド構造 (−O−O−) または過カルボン酸構造(−C(=O) −O−O−)を有することを指す。 Note that having a peroxide in the molecule means having a peroxide structure (—O—O—) or a percarboxylic acid structure (—C (═O) —O—O—) in the molecule.
分子中に過酸化物を有する液状イソプレンゴムは、液状イソプレンゴムを含むゴム組成物を有機過酸化物加硫することにより形成される。加硫剤として使用される有機過酸化物としては、たとえばジクミルペルオキシド、ジ−tert−ブチルペルオキシド、tert−ブチルクミルペルオキシド、1,1−ジ−(tert−ブチルペルオキシ)−3,3,5−トリメチルシクロヘキサン、ベンゾイルペルオキシド、ラウロイルペルオキシドなどが挙げられ、具体的にいかなる有機過酸化物を使用するかは、それぞれの配合処方、加硫時の温度などを考慮して適宜選択される。有機過酸化物の使用量は液状イソプレンゴム100重量部あたり、通常0.5〜10重量部、好ましくは2〜5重量部である。 The liquid isoprene rubber having a peroxide in the molecule is formed by vulcanizing an organic peroxide with a rubber composition containing the liquid isoprene rubber. Examples of the organic peroxide used as the vulcanizing agent include dicumyl peroxide, di-tert-butyl peroxide, tert-butyl cumyl peroxide, 1,1-di- (tert-butylperoxy) -3,3, Examples include 5-trimethylcyclohexane, benzoyl peroxide, lauroyl peroxide, and the specific organic peroxide to be used is appropriately selected in consideration of the formulation of each compound, the temperature during vulcanization, and the like. The amount of the organic peroxide used is usually 0.5 to 10 parts by weight, preferably 2 to 5 parts by weight per 100 parts by weight of the liquid isoprene rubber.
粘着付与樹脂の添加量は50〜100重量部であり、50重量部よりも少ないと常温における粘着力に乏しく、100重量部を超えると低温下での粘着剤の凝集力が弱くなる。
本発明において、過酸化物を有する液状イソプレンゴムは、無水マレイン酸変性物及びカルボン酸変性物の両方を含むことが、好ましい。また、当該実施形態において、過酸化物を有する液状イソプレンゴムに対する無水マレイン酸変性ゴム及びカルボン酸変性ゴムの配合割合が、無水マレイン酸変性ゴム30〜50重量%、カルボン酸変性ゴム50〜70重量%であることが好ましい。
The addition amount of the tackifying resin is 50 to 100 parts by weight. If the amount is less than 50 parts by weight, the adhesive strength at normal temperature is poor, and if it exceeds 100 parts by weight, the cohesive force of the adhesive at low temperature becomes weak.
In the present invention, the liquid isoprene rubber having a peroxide preferably contains both a maleic anhydride modified product and a carboxylic acid modified product. In this embodiment, the blending ratio of maleic anhydride-modified rubber and carboxylic acid-modified rubber to the liquid isoprene rubber having a peroxide is 30 to 50% by weight of maleic anhydride-modified rubber and 50 to 70% by weight of carboxylic acid-modified rubber. % Is preferred.
粘着付与樹脂は好ましくは、軟化点125℃以上の脂環族石油樹脂40〜90重量部と、軟化点125℃以下の脂肪族石油樹脂、脂環族石油樹脂、テルペン樹脂、およびロジン樹脂からなる群より選択された少なくとも1種類以上の樹脂5〜10重量部とを含む。 The tackifying resin is preferably composed of 40 to 90 parts by weight of an alicyclic petroleum resin having a softening point of 125 ° C. or higher and an aliphatic petroleum resin, alicyclic petroleum resin, terpene resin, and rosin resin having a softening point of 125 ° C. or lower. And 5 to 10 parts by weight of at least one kind of resin selected from the group.
軟化点125℃以下の脂肪族石油樹脂、脂環族石油樹脂、テルペン樹脂、およびロジン樹脂からなる群より選択された少なくとも1種類以上の樹脂は5〜10重量部である。5重量部未満であると、ボールタックが不良であり、該樹脂が10重量部を超えると粘着力が不足して仮止めが剥がれ易くなり、ボールタック、保持力、落下特性、60℃保管後の被着体汚染性が不良となる。 The amount of at least one resin selected from the group consisting of an aliphatic petroleum resin having a softening point of 125 ° C. or lower, an alicyclic petroleum resin, a terpene resin, and a rosin resin is 5 to 10 parts by weight. If the amount is less than 5 parts by weight, the ball tack is poor. If the resin exceeds 10 parts by weight, the tackiness is insufficient and the temporary fixing is easily peeled off. The ball tack, holding force, drop characteristics, after storage at 60 ° C. The adherend contamination is poor.
粘着剤層14の厚み(乾燥後)は特に限定されないが、通常10〜50μm程度であり、好ましくは15〜40μmである。 Although the thickness (after drying) of the adhesive layer 14 is not specifically limited, Usually, it is about 10-50 micrometers, Preferably it is 15-40 micrometers.
架橋剤は0.1〜1.0重量部であり、1.0重量部を超えると粘着力、ボールタック、および物品固定性が不良となる。 A crosslinking agent is 0.1-1.0 weight part, and when it exceeds 1.0 weight part, adhesive force, ball tack, and article fixability will become inferior.
架橋剤としては、特に限定されないが、エポキシ樹脂およびイソシアネート樹脂等が用いられ、好ましくはエポキシ樹脂である。 Although it does not specifically limit as a crosslinking agent, An epoxy resin, an isocyanate resin, etc. are used, Preferably it is an epoxy resin.
液状イソプレンゴムに架橋剤を添加することにより、粘着剤の凝集力が大幅に向上されるので、段差のある部分に跨がって粘着テープを貼り付けた場合などのように、粘着テープが被着体に接する部分に応力が集中しても粘着剤が凝集破壊せず、糊残りの発生が解消する。尚、段差のある部分でなくとも、例えば平坦な塗装鋼板やポリスチレン樹脂板に貼り付けた場合でも糊残りせず剥離することができる。 By adding a cross-linking agent to the liquid isoprene rubber, the cohesive strength of the adhesive is greatly improved, so that the adhesive tape is covered with the adhesive tape, such as when the adhesive tape is applied across a stepped portion. Even if stress concentrates on the part in contact with the adherend, the adhesive does not cohesively break down, and the occurrence of adhesive residue is eliminated. Even if it is not a stepped portion, it can be peeled without leaving any adhesive even when it is attached to a flat coated steel plate or polystyrene resin plate, for example.
粘着剤層14には、必要に応じて、無機充填材、樹脂等の有機充填材、軟化剤、可塑剤、界面活性剤、カップリング剤、酸化防止剤、着色剤、保存剤、熱安定剤、光安定剤等の1種もしくは2種以上が更に添加されても良い。 For the pressure-sensitive adhesive layer 14, an inorganic filler, an organic filler such as a resin, a softener, a plasticizer, a surfactant, a coupling agent, an antioxidant, a colorant, a preservative, and a heat stabilizer, as necessary. In addition, one or more light stabilizers may be further added.
これらの更なる添加剤の添加量は特に限定されないが、本願課題の達成を妨げない量であり、通常0.1〜5重量部程度である。 The addition amount of these further additives is not particularly limited, but is an amount that does not hinder the achievement of the subject of the present application, and is usually about 0.1 to 5 parts by weight.
下塗り層16は、官能基を有する天然ゴム100重量部に対し、イソシアネート化合物80〜120重量部を含有する。イソシアネート化合物が80重量部未満であるかまたは120重量部を超えると、被着体汚染性が不良となる。 The undercoat layer 16 contains 80 to 120 parts by weight of an isocyanate compound with respect to 100 parts by weight of natural rubber having a functional group. When the isocyanate compound is less than 80 parts by weight or more than 120 parts by weight, the adherend contamination is poor.
かかる下塗り層16を支持体12と粘着剤層14の間に設けることにより、粘着剤層14と下塗り層16の接着性が向上し、粘着剤層14の被着体汚染性が排除または低減される。 By providing the undercoat layer 16 between the support 12 and the pressure-sensitive adhesive layer 14, the adhesiveness between the pressure-sensitive adhesive layer 14 and the undercoat layer 16 is improved, and the adherend contamination of the pressure-sensitive adhesive layer 14 is eliminated or reduced. The
官能基を有する天然ゴムとしては、−COOH、−OH、−NH2 、−SH、>CO、>C=C<、−C≡C−などの原子団を有するゴム、例えば液状イソプレンゴムが挙げられる。 Examples of the natural rubber having a functional group include rubbers having atomic groups such as -COOH, -OH, -NH2, -SH,> CO,> C = C <, -C≡C-, such as liquid isoprene rubber. .
下塗り層16の厚みは特に限定されないが、通常0.5〜6μm程度であり、好ましくは1〜3μmである。 The thickness of the undercoat layer 16 is not particularly limited, but is usually about 0.5 to 6 μm, preferably 1 to 3 μm.
好ましくは、粘着シート10は、粘着剤層14が支持体12の一方の面に積層され、粘着剤層14と反対側の支持体12の面に離型層18が積層される。 Preferably, in the pressure-sensitive adhesive sheet 10, the pressure-sensitive adhesive layer 14 is laminated on one surface of the support 12, and the release layer 18 is laminated on the surface of the support 12 opposite to the pressure-sensitive adhesive layer 14.
離型層18は好ましくはシリコーン離型剤または長鎖アルキルペンダント型有機離型剤(商品名ピーロイル1010:一方社油脂工業株式会社)等であり、厚みは特に限定されないが通常0.5〜6μm程度であり、好ましくは1〜3μmである。 The release layer 18 is preferably a silicone release agent or a long-chain alkyl pendant type organic release agent (trade name: Pyroyl 1010: On the other hand, Yushi Kogyo Co., Ltd.), and the thickness is not particularly limited but is usually 0.5 to 6 μm. About 1 to 3 μm.
本発明の粘着シートは、支持体12の少なくとも片面に粘着剤層14を形成することにより得られる。粘着剤層14は、支持体12の少なくとも片面に粘着剤溶液をロールコータ、ダイコータなどを用いて塗布したり、または支持体12との共押出などにより形成されるが、好ましくはフィルム支持体12の片面をコロナ放電処理し、処理面に粘着剤溶液を塗布することにより形成する。下塗り層16が支持体12と粘着剤層14との間に形成される場合は、支持体フィルム12の片面に下塗り層16を施した後、上記と同様な方法により粘着剤層14を形成する。 The pressure-sensitive adhesive sheet of the present invention is obtained by forming the pressure-sensitive adhesive layer 14 on at least one side of the support 12. The pressure-sensitive adhesive layer 14 is formed by applying a pressure-sensitive adhesive solution to at least one surface of the support 12 using a roll coater, a die coater, or the like, or by coextrusion with the support 12. This is formed by performing a corona discharge treatment on one side of the substrate and applying an adhesive solution to the treated surface. In the case where the undercoat layer 16 is formed between the support 12 and the pressure-sensitive adhesive layer 14, after the undercoat layer 16 is applied to one side of the support film 12, the pressure-sensitive adhesive layer 14 is formed by the same method as described above. .
以下、実施例および比較例を挙げて本発明をより具体的に説明するが、本発明がこれらに限定されないことは言うまでもない。なお、ここで部とはすべて重量部を意味する。 EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated more concretely, it cannot be overemphasized that this invention is not limited to these. Here, all parts mean parts by weight.
(実施例1〜5)
厚み50μmの支持体12(ポリエチレンテレフタレート(PET)フィルム)の片面に、乾燥後の厚みが1μmとなるよう下塗り剤16(MG−30およびコロネートL)を塗布し、次に、表1に示すエラストマーを主成分とする粘着剤組成物の溶剤溶液を乾燥後の厚みが25μmとなるよう下塗り剤16の上に塗布して粘着剤層14を形成し、物品固定用粘着テープ1を作製した。
(Examples 1-5)
Undercoat 16 (MG-30 and Coronate L) was applied to one side of a support 12 (polyethylene terephthalate (PET) film) having a thickness of 50 μm so that the thickness after drying was 1 μm. A pressure-sensitive adhesive composition solvent solution was applied onto the undercoat 16 so as to have a thickness after drying of 25 μm to form a pressure-sensitive adhesive layer 14, thereby preparing an adhesive tape 1 for fixing an article.
実施例1〜5の粘着テープ1の各層の成分を表1に示した通りである。 The components of each layer of the adhesive tape 1 of Examples 1 to 5 are as shown in Table 1.
(比較例1〜11)
比較例1〜11は、実施例1〜5と同様に作製した物品固定用粘着テープ1であり、粘着テープ1の各層の成分を表1に示した通りである。
(Comparative Examples 1-11)
Comparative Examples 1 to 11 are adhesive tapes 1 for fixing articles manufactured in the same manner as Examples 1 to 5. The components of each layer of the adhesive tape 1 are as shown in Table 1.
比較例1では下塗り剤のイソシアネート化合物(コロネートL)を70部とした。 In Comparative Example 1, 70 parts of an isocyanate compound (Coronate L) as an undercoat agent was used.
比較例2では下塗り剤のイソシアネート化合物(コロネートL)を130部とした。 In Comparative Example 2, the isocyanate compound (Coronate L) as the primer was 130 parts.
比較例3では粘着剤のエラストマーの天然ゴムを90部、液状イソプレンゴムを10部とした。 In Comparative Example 3, 90 parts of an adhesive natural rubber elastomer and 10 parts of liquid isoprene rubber were used.
比較例4では粘着剤のエラストマーの天然ゴムを50部、液状イソプレンゴムを50部とした。 In Comparative Example 4, 50 parts of the natural rubber of the adhesive elastomer and 50 parts of the liquid isoprene rubber were used.
比較例5では粘着剤の粘着付与樹脂のアルコンP140を80部、クイントンG115を0部とした。 In Comparative Example 5, 80 parts of Alcon P140 and 0 parts of Quinton G115 were used as the tackifier resin of the adhesive.
比較例6では粘着剤の粘着付与樹脂のアルコンP140を60部、クイントンG115を20部とした。 In Comparative Example 6, 60 parts of Alcon P140 and 20 parts of Quinton G115 were used as the tackifier resin of the adhesive.
比較例7では支持体を縦一軸延伸OPPとした。 In Comparative Example 7, the support was a longitudinal uniaxially stretched OPP.
比較例8では支持体を二軸延伸OPPとした。 In Comparative Example 8, the support was biaxially stretched OPP.
比較例9では粘着剤の着色剤(ピグメントA)を10部とした。 In Comparative Example 9, the pressure-sensitive adhesive colorant (Pigment A) was 10 parts.
比較例10では粘着剤の架橋剤(テトラッドC)を3部とした。 In Comparative Example 10, the pressure-sensitive adhesive cross-linking agent (Tetrad C) was 3 parts.
実施例1〜5および比較例1〜10で得られた粘着シートを用いて、I.テープ物性、II.物品固定性、III. 被着体汚染性、およびIV.オートディスペンサー適正を測定および評価した。それぞれの測定方法および評価方法は以下の通りであり、結果を表1に示す。 Using the pressure-sensitive adhesive sheets obtained in Examples 1 to 5 and Comparative Examples 1 to 10, I. Tape Properties, II. Article fixability, III. Adherend contamination, and IV. Auto-dispenser suitability was measured and evaluated. Each measurement method and evaluation method are as follows, and the results are shown in Table 1.
I.テープ物性
1)粘着力
粘着力は、JIS Z 0237に準拠した試験方法を用いて測定した。
I. Tape properties 1) Adhesive strength Adhesive strength was measured using a test method based on JIS Z 0237.
粘着力が2N/10mm以上5N/10mm以下を○とし、2.0N/10mm未満または5.0N/10mmを超える場合を×と判定した。 The case where the adhesive strength was 2 N / 10 mm or more and 5 N / 10 mm or less was evaluated as “◯”, and the case where the adhesive strength was less than 2.0 N / 10 mm or exceeding 5.0 N / 10 mm was determined as “X”.
2)ボールタック
ボールタックはJIS Z 0237に準拠した試験方法を用いて測定した。
2) Ball tack Ball tack was measured using a test method based on JIS Z 0237.
ボール番号で6以上10以下を○とし、5以下または11以上を×と判定した。 A ball number of 6 or more and 10 or less was evaluated as ◯, and 5 or less or 11 or more was determined as ×.
3)保持力
保持力はJIS Z 0237に準拠し、測定温度40℃において、試験片の長さ方向の端部に1kgの荷重を垂直方向に付加し、試験片に荷重を付加してから1時間後の剥離長さをルーペを用いて測定した。
3) Holding force The holding force is in accordance with JIS Z 0237. At a measurement temperature of 40 ° C, a 1 kg load is applied to the end of the test piece in the longitudinal direction and 1 is applied after the load is applied to the test piece. The peel length after time was measured using a magnifying glass.
0.5mm以下を○とし、0.6以上または落下した場合を×と判定した。 The case where 0.5 mm or less was made into (circle) and 0.6 or more or it fell was determined to be x.
4)ゲル分率
粘着剤組成物を、過剰量のトルエン中に浸漬した後、不溶解分の乾燥重量と、浸漬前の粘着剤組成物の乾燥重量との比を測定することにより求めた。
4) Gel fraction After the pressure-sensitive adhesive composition was immersed in an excessive amount of toluene, the ratio was determined by measuring the ratio between the dry weight of the insoluble component and the dry weight of the pressure-sensitive adhesive composition before immersion.
20%以上を○とし、20%未満を×と判定した。 20% or more was evaluated as ○, and less than 20% was determined as ×.
II.物品固定性
物品固定性はJIS Z 0202に準拠した。規定高さ(300mmおよび600mm)で被着体としての市販のインクジェットプリンター(キヤノン製PIXUS pi4500)の可動部にテープを貼付し、該規定高さから被着体が落下するか否かを確認した。評価は1度又は2度行った。テープの剥離または切断がなかったものを○とし、テープの剥離または切断があったものを×と判定した。
II. Article fixing property The article fixing property conformed to JIS Z 0202. Tape was applied to the movable part of a commercially available inkjet printer (Canon PIXUS pi4500) as the adherend at the specified height (300 mm and 600 mm), and it was confirmed whether the adherend dropped from the specified height. . Evaluation was performed once or twice. The case where there was no peeling or cutting of the tape was evaluated as ◯, and the case where there was peeling or cutting of the tape was determined as x.
III.被着体汚染性
被着体としてポリスチレン(PS)樹脂板、ABS樹脂板、ポリカーボネート(PC)樹脂板、ポリメタクリル酸(PMMA)樹脂板、ポリ塩化ビニル(PVC)樹脂板、及びアクリル塗料鋼板を用意し、粘着テープを貼付け、規定温度(60℃)で10日間保管後、室温に戻し、粘着テープを手で被着体から剥ぎ取り、被着体における糊残り現象の有無を調べた。
III. Substrate contamination The polystyrene (PS) resin plate, ABS resin plate, polycarbonate (PC) resin plate, polymethacrylic acid (PMMA) resin plate, polyvinyl chloride (PVC) resin plate, and acrylic paint steel plate are used as adherends. The adhesive tape was prepared, affixed with an adhesive tape, stored at a specified temperature (60 ° C.) for 10 days, returned to room temperature, the adhesive tape was peeled off from the adherend by hand, and the presence or absence of an adhesive residue phenomenon on the adherend was examined.
また別に、被着体に粘着テープを貼付け、−20℃に1日以上放置した後、−20℃下にて粘着テープを手で被着体から剥ぎ取り、被着体における糊残り現象の有無を調べた。 Separately, after sticking the adhesive tape on the adherend and leaving it to stand at −20 ° C. for 1 day or longer, the adhesive tape is peeled off from the adherend by hand at −20 ° C. I investigated.
糊残りやストップマーク(剥離により発生する痕跡)が残っていない場合を○、糊残りやストップマークが残っている場合を×と判定した。 A case where no adhesive residue or stop mark (a trace generated by peeling) did not remain was evaluated as ◯, and a case where adhesive residue or stop mark remained was determined as x.
IV.オートディスペンサー適正
規定長さ(200mmおよび900mm)で繰り出した際にトラブル発生率が1%未満の場合を○、トラブル発生率が1%以上10%以下の場合を△、トラブル発生率が10%を超える場合を×と判定した。
IV. Appropriate auto-dispenser ○ When the trouble occurrence rate is less than 1% when the specified length (200mm and 900mm) is drawn out, △ when the trouble occurrence rate is 1% or more and 10% or less, and trouble occurrence rate 10% The case where it exceeded was determined as x.
実施例1−5の粘着テープは、テープ物性、物品固定性、被着体汚染性、およびオートディスペンサー適正ともに優れていた。 The adhesive tape of Example 1-5 was excellent in tape properties, article fixing properties, adherend contamination, and autodispenser suitability.
これに対し、比較例1−2の粘着テープは被着体汚染性が悪く、比較例3のの粘着テープはボールタックが不良であり、比較例4の粘着テープは物品固定性に乏しく、比較例5の粘着テープはボールタックが不良であり、比較例6の粘着テープはボールタック、40℃保持力、600mmにおける落下耐性に乏しいと共に、PC,PVC,ならびにアクリル塗料鋼板に対する60℃保管後の剥離で糊残りが発生し、比較例7は−20℃での剥離の場合に糊残りが発生すると共に粘着テープが900mmの場合のオートディスペンサー適性が不良であり、比較例8は粘着テープが200mmおよび900mmの場合のオートディスペンサー適性が不良であり、比較例9はボールタックおよび600mmにおける落下耐性が不良であり、比較例10は粘着力、ボールタックおよび300mmならびに600mmにおける落下耐性が不良であった。 On the other hand, the adhesive tape of Comparative Example 1-2 has poor adherend contamination, the adhesive tape of Comparative Example 3 has poor ball tack, and the adhesive tape of Comparative Example 4 has poor article fixability. The pressure-sensitive adhesive tape of Example 5 has poor ball tack, and the pressure-sensitive adhesive tape of Comparative Example 6 has poor ball tack, 40 ° C. holding force, and 600 mm drop resistance, and after storage at 60 ° C. for PC, PVC, and acrylic paint steel plates. Adhesive residue is generated by peeling, and Comparative Example 7 has adhesive residue in the case of peeling at −20 ° C. and is not suitable for auto dispenser when the adhesive tape is 900 mm. Comparative Example 8 has an adhesive tape of 200 mm. And Comparative Example 9 has poor ball tack and drop resistance at 600 mm. Comparative Example 1 The adhesive strength, drop resistance in ball tack and 300mm and 600mm was poor.
下記表2に示す組成とする以外は、実施例1と同様にし、粘着テープを製造し、その評価を行った。
Except having set it as the composition shown in following Table 2, it carried out similarly to Example 1, manufactured the adhesive tape, and performed the evaluation.
本発明の新規な粘着シートは、粘着剤層に天然ゴム50〜80重量部および分子中に過酸化物を有する液状イソプレンゴム20〜45重量部を含むエラストマーと、粘着付与樹脂50〜100重量部と、架橋剤0.1〜1.0重量部とを含有しているので、家電・OA機器等の様々な被着体に対し強固な粘着力を発現し、かつ長期保管後にテープを剥がしても糊残り等の被着体汚染が発生しにくい点で有用である。 The novel pressure-sensitive adhesive sheet of the present invention comprises an elastomer containing 50 to 80 parts by weight of natural rubber in the pressure-sensitive adhesive layer and 20 to 45 parts by weight of liquid isoprene rubber having a peroxide in the molecule, and 50 to 100 parts by weight of a tackifying resin. And 0.1 to 1.0 parts by weight of a cross-linking agent, so that it exhibits a strong adhesive force to various adherends such as home appliances and OA equipment, and peels off the tape after long-term storage. Is also useful in that adherend contamination such as adhesive residue is less likely to occur.
10…粘着シート、12…支持体、14…粘着剤層、16…下塗り層。 DESCRIPTION OF SYMBOLS 10 ... Adhesive sheet, 12 ... Support body, 14 ... Adhesive layer, 16 ... Undercoat layer.
Claims (4)
粘着付与樹脂が、軟化点125℃以上の脂環族石油樹脂40〜90重量部と、軟化点125℃以下の脂肪族石油樹脂、脂環族石油樹脂、テルペン樹脂、およびロジン樹脂からなる群より選択された少なくとも1種類以上の樹脂5〜10重量部とを含み、
粘着剤層と支持体の間に、官能基を有する天然ゴム100重量部に対し、イソシアネート化合物80〜120重量部を含有する下塗り層をさらに備えており、
支持体がPETフィルムである、粘着テープ。 An elastomer as a main component, comprising 50 to 80 parts by weight of natural rubber and 20 to 45 parts by weight of liquid isoprene rubber having a peroxide in the molecule, 50 to 100 parts by weight of a tackifying resin, and a crosslinking agent 0.1 to 1.0 parts by weight , inorganic filler, organic filler, softener, plasticizer, surfactant, coupling agent, antioxidant, colorant, preservative, heat stabilizer and light stabilizer An adhesive tape for fixing an article comprising an adhesive layer containing 0.1 to 5 parts by weight of at least one selected from the group consisting of and a support ,
The tackifying resin is composed of 40 to 90 parts by weight of an alicyclic petroleum resin having a softening point of 125 ° C. or higher and an aliphatic petroleum resin, alicyclic petroleum resin, terpene resin, and rosin resin having a softening point of 125 ° C. or lower. Including 5 to 10 parts by weight of at least one selected resin,
Between the pressure-sensitive adhesive layer and the support, further comprising an undercoat layer containing 80 to 120 parts by weight of an isocyanate compound with respect to 100 parts by weight of natural rubber having a functional group,
An adhesive tape, wherein the support is a PET film .
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JP6271334B2 (en) * | 2013-05-16 | 2018-01-31 | 積水化学工業株式会社 | Adhesive tape |
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JP6646365B2 (en) * | 2015-06-22 | 2020-02-14 | 株式会社寺岡製作所 | Adhesive tape |
KR102624251B1 (en) * | 2021-03-31 | 2024-01-11 | 가부시키가이샤 데라오카 세이사쿠쇼 | Adhesive compositions and adhesive tapes |
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US1943424A (en) * | 1931-10-24 | 1934-01-16 | Naugatuck Chem Co | Rubber adhesive |
JPS5928352B2 (en) * | 1976-12-09 | 1984-07-12 | 日東電工株式会社 | adhesive composition |
JPH0461947A (en) * | 1990-06-27 | 1992-02-27 | Hitachi Chem Co Ltd | Masking tape |
JPH04173888A (en) * | 1990-11-07 | 1992-06-22 | Hitachi Chem Co Ltd | Tacky agent for masking tape |
JPH0617014A (en) * | 1992-04-28 | 1994-01-25 | Sekisui Chem Co Ltd | Pressure-sensitive adhesive tape for fixation of article |
JP3738038B2 (en) * | 1993-08-11 | 2006-01-25 | ニチバン株式会社 | Adhesive composition and masking tape |
JP2775383B2 (en) * | 1993-09-07 | 1998-07-16 | 昭和高分子株式会社 | Thermosetting adhesive composition |
JPH08188752A (en) * | 1995-01-09 | 1996-07-23 | Sekisui Chem Co Ltd | Adhesive double coated tape |
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JP2004051723A (en) * | 2002-07-18 | 2004-02-19 | Teraoka Seisakusho:Kk | Primer composition for pressure sensitive adhesive sheet and pressure sensitive adhesive sheet |
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