JP2001089719A - Method and apparatus of producing self-adhesive tape - Google Patents
Method and apparatus of producing self-adhesive tapeInfo
- Publication number
- JP2001089719A JP2001089719A JP26953499A JP26953499A JP2001089719A JP 2001089719 A JP2001089719 A JP 2001089719A JP 26953499 A JP26953499 A JP 26953499A JP 26953499 A JP26953499 A JP 26953499A JP 2001089719 A JP2001089719 A JP 2001089719A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- sensitive adhesive
- adhesive composition
- thickness
- adhesive tape
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 6
- 239000002390 adhesive tape Substances 0.000 title abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 88
- 238000004519 manufacturing process Methods 0.000 claims abstract description 44
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 37
- 239000000853 adhesive Substances 0.000 claims abstract description 20
- 230000001678 irradiating effect Effects 0.000 claims abstract description 17
- 230000001070 adhesive effect Effects 0.000 claims abstract description 14
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 118
- 239000010410 layer Substances 0.000 claims description 27
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 8
- 239000000758 substrate Substances 0.000 claims description 7
- 230000000379 polymerizing effect Effects 0.000 claims description 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000004804 winding Methods 0.000 description 11
- 230000008961 swelling Effects 0.000 description 9
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 8
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 8
- 239000012790 adhesive layer Substances 0.000 description 6
- 239000000178 monomer Substances 0.000 description 6
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003999 initiator Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- GOXQRTZXKQZDDN-UHFFFAOYSA-N 2-Ethylhexyl acrylate Chemical compound CCCCC(CC)COC(=O)C=C GOXQRTZXKQZDDN-UHFFFAOYSA-N 0.000 description 3
- 238000011156 evaluation Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229920000800 acrylic rubber Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- ISAOCJYIOMOJEB-UHFFFAOYSA-N benzoin Chemical compound C=1C=CC=CC=1C(O)C(=O)C1=CC=CC=C1 ISAOCJYIOMOJEB-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- -1 fluidity Substances 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- 238000003475 lamination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- PSGCQDPCAWOCSH-UHFFFAOYSA-N (4,7,7-trimethyl-3-bicyclo[2.2.1]heptanyl) prop-2-enoate Chemical compound C1CC2(C)C(OC(=O)C=C)CC1C2(C)C PSGCQDPCAWOCSH-UHFFFAOYSA-N 0.000 description 1
- DKEGCUDAFWNSSO-UHFFFAOYSA-N 1,8-dibromooctane Chemical compound BrCCCCCCCCBr DKEGCUDAFWNSSO-UHFFFAOYSA-N 0.000 description 1
- 239000012956 1-hydroxycyclohexylphenyl-ketone Substances 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- PTJDGKYFJYEAOK-UHFFFAOYSA-N 2-butoxyethyl prop-2-enoate Chemical compound CCCCOCCOC(=O)C=C PTJDGKYFJYEAOK-UHFFFAOYSA-N 0.000 description 1
- FWWXYLGCHHIKNY-UHFFFAOYSA-N 2-ethoxyethyl prop-2-enoate Chemical compound CCOCCOC(=O)C=C FWWXYLGCHHIKNY-UHFFFAOYSA-N 0.000 description 1
- XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 description 1
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 1
- GWZMWHWAWHPNHN-UHFFFAOYSA-N 2-hydroxypropyl prop-2-enoate Chemical compound CC(O)COC(=O)C=C GWZMWHWAWHPNHN-UHFFFAOYSA-N 0.000 description 1
- BQZJOQXSCSZQPS-UHFFFAOYSA-N 2-methoxy-1,2-diphenylethanone Chemical compound C=1C=CC=CC=1C(OC)C(=O)C1=CC=CC=C1 BQZJOQXSCSZQPS-UHFFFAOYSA-N 0.000 description 1
- BSMGLVDZZMBWQB-UHFFFAOYSA-N 2-methyl-1-phenylpropan-1-one Chemical compound CC(C)C(=O)C1=CC=CC=C1 BSMGLVDZZMBWQB-UHFFFAOYSA-N 0.000 description 1
- RZVINYQDSSQUKO-UHFFFAOYSA-N 2-phenoxyethyl prop-2-enoate Chemical compound C=CC(=O)OCCOC1=CC=CC=C1 RZVINYQDSSQUKO-UHFFFAOYSA-N 0.000 description 1
- ZVYGIPWYVVJFRW-UHFFFAOYSA-N 3-methylbutyl prop-2-enoate Chemical compound CC(C)CCOC(=O)C=C ZVYGIPWYVVJFRW-UHFFFAOYSA-N 0.000 description 1
- DXPPIEDUBFUSEZ-UHFFFAOYSA-N 6-methylheptyl prop-2-enoate Chemical compound CC(C)CCCCCOC(=O)C=C DXPPIEDUBFUSEZ-UHFFFAOYSA-N 0.000 description 1
- CUXGDKOCSSIRKK-UHFFFAOYSA-N 7-methyloctyl prop-2-enoate Chemical compound CC(C)CCCCCCOC(=O)C=C CUXGDKOCSSIRKK-UHFFFAOYSA-N 0.000 description 1
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 244000028419 Styrax benzoin Species 0.000 description 1
- 235000000126 Styrax benzoin Nutrition 0.000 description 1
- 239000002174 Styrene-butadiene Substances 0.000 description 1
- 235000008411 Sumatra benzointree Nutrition 0.000 description 1
- 125000005396 acrylic acid ester group Chemical group 0.000 description 1
- 125000005233 alkylalcohol group Chemical group 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229960002130 benzoin Drugs 0.000 description 1
- RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 description 1
- 239000012965 benzophenone Substances 0.000 description 1
- MQDJYUACMFCOFT-UHFFFAOYSA-N bis[2-(1-hydroxycyclohexyl)phenyl]methanone Chemical compound C=1C=CC=C(C(=O)C=2C(=CC=CC=2)C2(O)CCCCC2)C=1C1(O)CCCCC1 MQDJYUACMFCOFT-UHFFFAOYSA-N 0.000 description 1
- MTAZNLWOLGHBHU-UHFFFAOYSA-N butadiene-styrene rubber Chemical compound C=CC=C.C=CC1=CC=CC=C1 MTAZNLWOLGHBHU-UHFFFAOYSA-N 0.000 description 1
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- KBLWLMPSVYBVDK-UHFFFAOYSA-N cyclohexyl prop-2-enoate Chemical compound C=CC(=O)OC1CCCCC1 KBLWLMPSVYBVDK-UHFFFAOYSA-N 0.000 description 1
- FWLDHHJLVGRRHD-UHFFFAOYSA-N decyl prop-2-enoate Chemical compound CCCCCCCCCCOC(=O)C=C FWLDHHJLVGRRHD-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 235000019382 gum benzoic Nutrition 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 1
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- MDYPDLBFDATSCF-UHFFFAOYSA-N nonyl prop-2-enoate Chemical compound CCCCCCCCCOC(=O)C=C MDYPDLBFDATSCF-UHFFFAOYSA-N 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- WRAQQYDMVSCOTE-UHFFFAOYSA-N phenyl prop-2-enoate Chemical compound C=CC(=O)OC1=CC=CC=C1 WRAQQYDMVSCOTE-UHFFFAOYSA-N 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000379 polypropylene carbonate Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000011115 styrene butadiene Substances 0.000 description 1
- 229920003048 styrene butadiene rubber Polymers 0.000 description 1
Landscapes
- Adhesive Tapes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、粘着剤層の厚みの
ばらつきのない粘着テープを製造する方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a pressure-sensitive adhesive tape having a uniform thickness of a pressure-sensitive adhesive layer.
【０００２】[0002]
【従来の技術】従来より、図１に示すような、剥離処理
された基材フィルム３及び５（以下、単に剥離フィル
ム）の間に粘着剤層４を挟持した構造の両面粘着テープ
１ａが広く知られている。このような粘着剤層４は、ア
クリルモノマーを主成分とする粘着剤組成物を剥離フィ
ルム３上に層状に塗布し、その塗布膜に紫外線、電子線
等のエネルギー線を照射して重合反応させることにより
形成されている。2. Description of the Related Art Conventionally, as shown in FIG. 1, a double-sided pressure-sensitive adhesive tape 1a having a structure in which a pressure-sensitive adhesive layer 4 is sandwiched between release-treated base films 3 and 5 (hereinafter simply referred to as a release film) has been widely used. Are known. The pressure-sensitive adhesive layer 4 is formed by applying a pressure-sensitive adhesive composition containing an acrylic monomer as a main component on the release film 3 in a layered manner, and irradiating the applied film with energy rays such as ultraviolet rays and electron beams to cause a polymerization reaction. It is formed by this.
【０００３】図１の両面粘着テープ１ａは、図２のよう
な基材フィルム６の両面に粘着剤層４が形成された両面
粘着テープ１ｂと区別する観点から、“ノンサポート型
粘着テープ”と呼ばれることがある。[0003] The double-sided pressure-sensitive adhesive tape 1a of FIG. 1 is referred to as a "non-support type pressure-sensitive adhesive tape" from the viewpoint of distinguishing it from the double-sided pressure-sensitive adhesive tape 1b of FIG. Sometimes called.
【０００４】上記の粘着テープ１ａは、図８のような製
造装置１００により製造することができる。ここで、塗
布装置１００は、粘着剤組成物を塗布する塗布部４０と
エネルギー線として紫外線を照射する照射部７０とを有
し、更に、剥離フィルム３を供給する巻出し部３０、剥
離フィルム５を積層する積層部５０及び粘着剤層４が形
成された粘着テープ１ａを巻き取る巻取り部９０とを有
している。The above-mentioned adhesive tape 1a can be manufactured by a manufacturing apparatus 100 as shown in FIG. Here, the coating device 100 includes a coating unit 40 for coating the pressure-sensitive adhesive composition and an irradiation unit 70 for irradiating ultraviolet rays as energy rays, and further, an unwinding unit 30 for supplying the release film 3, a release film 5 And a winding section 90 for winding the adhesive tape 1a on which the adhesive layer 4 is formed.
【０００５】塗布装置１００を使って、図１の粘着テー
プ１ａの製造工程を説明する。[0005] A process for manufacturing the adhesive tape 1a of FIG.
【０００６】まず、巻出し部３０の巻出し軸３２に装着
された剥離フィルム３のウエブ３４から剥離フィルム３
が、塗布部４０まで引き出される。First, the release film 3 is removed from the web 34 of the release film 3 attached to the unwinding shaft 32 of the unwinding section 30.
Is drawn out to the application unit 40.
【０００７】塗布部４０は、上面ロール４２と下面ロー
ル４４とが一対に配置され、下面ロール４４には粘着剤
組成物４ａを供給するためのダム４６が付設されてい
る。The application section 40 has an upper roll 42 and a lower roll 44 arranged in a pair, and the lower roll 44 is provided with a dam 46 for supplying the adhesive composition 4a.
【０００８】上面ロール４２と下面ロール４４の間には
所定の間隙４８が形成され、剥離フィルム３が前記間隙
４８を通過する際に、粘着剤組成物４ａが剥離フィルム
３上に塗布されるしくみとなっている。A predetermined gap 48 is formed between the upper roll 42 and the lower roll 44, and the adhesive composition 4 a is applied onto the release film 3 when the release film 3 passes through the gap 48. It has become.
【０００９】次に、剥離フィルム５が、剥離フィルムウ
エブ（図示せず）から引き出され、粘着剤組成物４ａ上
に載置され、積層部５０の一対に配置された上面ロール
５２と下面ロール５４との隙間５８を通過する際に、粘
着剤組成物４ａ上に剥離フィルム５が積層される。Next, the release film 5 is pulled out from a release film web (not shown), placed on the pressure-sensitive adhesive composition 4a, and disposed on a pair of the upper and lower rolls 52 and 54 of the laminating section 50. The release film 5 is laminated on the pressure-sensitive adhesive composition 4a when passing through the gap 58 between the pressure-sensitive adhesive composition 4a.
【００１０】粘着剤組成物４ａと剥離フィルム５が積層
された剥離フィルム３は、紫外線をを照射する照射部７
０に搬送される。ここで、照射部７０には、金属製の照
射室７１中に剥離フィルムの移動を支持する支持ローラ
７３と、エネルギー線として紫外線を照射する光源ラン
プ７２とが配備されている。照射室７１内に搬送された
剥離フィルム３上の粘着剤組成物４ａは、上記光源ラン
プ７２から紫外線が照射され、それにより重合反応を開
始し、重合反応終了後に粘着剤層４となる。The release film 3 in which the pressure-sensitive adhesive composition 4a and the release film 5 are laminated is applied to an irradiation section 7 for irradiating ultraviolet rays.
Transported to zero. Here, the irradiation section 70 is provided with a support roller 73 for supporting the movement of the release film in a metal irradiation chamber 71 and a light source lamp 72 for irradiating ultraviolet rays as energy rays. The pressure-sensitive adhesive composition 4 a on the release film 3 conveyed into the irradiation chamber 71 is irradiated with ultraviolet rays from the light source lamp 72, thereby starting a polymerization reaction, and becomes the pressure-sensitive adhesive layer 4 after the completion of the polymerization reaction.
【００１１】なお、光源ランプ７２の紫外線の強度は、
粘着剤組成物４ａが照射室７１を通過する間に重合反応
がほぼ完了するように設定されている。The intensity of the ultraviolet light from the light source lamp 72 is
It is set such that the polymerization reaction is almost completed while the pressure-sensitive adhesive composition 4a passes through the irradiation chamber 71.
【００１２】次に、粘着剤層４が形成された剥離フィル
ム３は照射部７０から搬出され、巻取り部９０の巻取り
軸９２により巻き取られ粘着テープウエブ９４となる。
つぎに、このウエブ９４を所定の大きさに裁断すること
により、目的の粘着テープ１ａを得ることができる。Next, the release film 3 on which the pressure-sensitive adhesive layer 4 is formed is carried out from the irradiation section 70 and wound up by a winding shaft 92 of a winding section 90 to form an adhesive tape web 94.
Next, the target adhesive tape 1a can be obtained by cutting the web 94 into a predetermined size.
【００１３】なお、図９の製造装置１０１を利用して、
粘着剤層４が形成されたのち剥離フィルム３及び５を剥
離ロール９６、９６′により剥離して、印刷等が施され
た印刷フィルム３'及び５'を積層ロール９８、９８′に
より新たに積層することにより、図３に示すような商品
価値を高めた粘着テープ１ｃを製造することもしばしば
行われる。Note that using the manufacturing apparatus 101 shown in FIG.
After the pressure-sensitive adhesive layer 4 is formed, the release films 3 and 5 are peeled off by the release rolls 96 and 96 ′, and the printed films 3 ′ and 5 ′ on which printing or the like has been performed are newly laminated by the laminate rolls 98 and 98 ′. By doing so, it is often performed to produce an adhesive tape 1c having an increased commercial value as shown in FIG.
【００１４】また、図８の製造装置を使って、剥離フィ
ルム３を基材フィルム６に置き換えると、図４のような
片面粘着テープ１ｄを得ることができる。When the release film 3 is replaced with the base film 6 using the manufacturing apparatus shown in FIG. 8, a single-sided adhesive tape 1d as shown in FIG. 4 can be obtained.
【００１５】このような紫外線等のエネルギー線により
重合反応させた粘着剤層を有する粘着テープは、その製
造工程において有機溶剤を使用しないので有機溶剤によ
る作業環境の悪化を招くことがなく、また、強力な粘着
力を示すので、今後の一層の需要が見込まれている。The pressure-sensitive adhesive tape having the pressure-sensitive adhesive layer polymerized by energy rays such as ultraviolet rays does not use an organic solvent in the production process, so that the working environment does not deteriorate due to the organic solvent. Due to the strong adhesion, further demand is expected in the future.
【００１６】[0016]
【発明が解決しようとする課題】しかし、図８や図９で
示した製造装置を用いて粘着テープを製造する従来の製
造方法においては、粘着剤層４の厚みにムラが生じ、剥
がれ易くなるという問題があった。However, in the conventional manufacturing method of manufacturing an adhesive tape using the manufacturing apparatus shown in FIGS. 8 and 9, the thickness of the adhesive layer 4 becomes uneven and the adhesive layer 4 is easily peeled. There was a problem.
【００１７】本発明は、粘着剤組成物にエネルギー線を
照射して重合反応させ、厚みムラのない粘着剤層を有す
る粘着テープの製造方法を提供することを目的とする。An object of the present invention is to provide a method for producing a pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer having no thickness unevenness by irradiating the pressure-sensitive adhesive composition with an energy ray to cause a polymerization reaction.
【００１８】[0018]
【課題を達成するための手段】本発明者らは、照射部に
おいて粘着剤組成物に“膨れ”が発生し、その膨れによ
り粘着剤層の厚みにばらつきが発生すること、そのばら
つきを無くすためには、粘着剤組成物が重合反応を開始
してから完了するまでの間に層状の粘着剤組成物の厚み
を照射部において“膨れ”を押圧すること等により強制
的に調整すればよいことを見出し、本発明を完成させる
に至った。Means for Achieving the Object The present inventors have found that the pressure-sensitive adhesive composition has "swelling" in the irradiated area, and the thickness of the pressure-sensitive adhesive layer varies due to the swelling. In other words, the thickness of the layered pressure-sensitive adhesive composition may be forcibly adjusted by, for example, pressing a “bulge” in the irradiation part between the time when the pressure-sensitive adhesive composition starts the polymerization reaction and the time when the polymerization reaction is completed. And completed the present invention.
【００１９】即ち、本発明は、粘着剤組成物にエネルギ
ー線を照射して重合反応させることにより形成された粘
着剤層を有する粘着テープの製造方法において、粘着剤
組成物に対しエネルギー線の照射を開始した後、粘着剤
組成物の重合反応がほぼ完了するまでの間に、粘着組成
物の厚みを厚み制御手段により調整することを特徴とす
る製造方法を提供する。That is, the present invention relates to a method for producing a pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer formed by irradiating the pressure-sensitive adhesive composition with an energy beam to cause a polymerization reaction. And a method of adjusting the thickness of the pressure-sensitive adhesive composition by thickness control means until the polymerization reaction of the pressure-sensitive adhesive composition is almost completed.
【００２０】また、本発明は、テープ状基材に粘着剤組
成物を塗布する塗布手段と、テープ状基材上の粘着剤組
成物に更に剥離フィルムを積層する積層手段と、粘着剤
組成物が剥離フィルムとテープ状基材との間に挟持され
てなる積層体にエネルギー線を照射し、粘着剤組成物を
重合反応させて粘着剤層とするための照射手段とを少な
くとも有する粘着テープの製造装置において、粘着剤組
成物に対しエネルギー線の照射を開始した後、粘着剤組
成物の重合反応がほぼ完了するまでの間に、粘着剤組成
物の厚みを調整するための厚み制御手段が照射手段に設
けられていることを特徴とする製造装置を提供する。Further, the present invention provides a coating means for applying a pressure-sensitive adhesive composition to a tape-shaped substrate, a laminating means for further laminating a release film on the pressure-sensitive adhesive composition on the tape-shaped substrate, and a pressure-sensitive adhesive composition. Irradiation of energy rays to the laminate that is sandwiched between the release film and the tape-shaped substrate, the irradiation means for polymerizing the pressure-sensitive adhesive composition and a pressure-sensitive adhesive layer and at least an irradiation means for the pressure-sensitive adhesive tape In the manufacturing apparatus, after starting irradiation of the pressure-sensitive adhesive composition with energy rays, until the polymerization reaction of the pressure-sensitive adhesive composition is almost completed, a thickness control means for adjusting the thickness of the pressure-sensitive adhesive composition is provided. There is provided a manufacturing apparatus characterized by being provided in irradiation means.
【００２１】本発明における厚み制御手段としては、粘
着剤組成物の重合の進行の程度、流動性、粘着力、凝集
力等に応じて、種々の装置を使用することができる。例
えば、ドクターブレード、隣接するガイドロール間にテ
ンションをかけるテンションロール、所定の間隙を有す
る一対の平滑ロールやエンボスロール、グラビア版等を
使用することができる。ここで、厚み制御手段による厚
み調整としては、粘着剤組成物の表面を平坦化して均一
な厚みになるように調整する場合や、意図的に微小凹凸
を表面に形成する場合等を挙げることができる。中で
も、粘着剤組成物の層厚をより容易に均一にできる点か
ら、所定の間隙を有する一対の平滑ロールを使用するこ
とが好ましい。As the thickness control means in the present invention, various devices can be used depending on the degree of progress of polymerization of the pressure-sensitive adhesive composition, fluidity, adhesive strength, cohesive strength and the like. For example, a doctor blade, a tension roll for applying tension between adjacent guide rolls, a pair of smooth rolls or emboss rolls having a predetermined gap, a gravure plate, or the like can be used. Here, examples of the thickness adjustment by the thickness control means include a case in which the surface of the pressure-sensitive adhesive composition is adjusted to have a uniform thickness by flattening, and a case in which minute irregularities are intentionally formed on the surface. it can. Among them, it is preferable to use a pair of smooth rolls having a predetermined gap from the viewpoint that the layer thickness of the pressure-sensitive adhesive composition can be more easily made uniform.
【００２２】[0022]
【発明の実施の形態】以下、本発明の粘着テープの製造
方法を、図５の製造装置（本発明の製造装置の一例）を
用いて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for producing a pressure-sensitive adhesive tape according to the present invention will be described using a production apparatus shown in FIG. 5 (an example of a production apparatus according to the present invention).
【００２３】図５の製造装置３００Ａは、所定の隙間８
６を有する一対の上面ロール８２及び下面ロール８４か
らなる厚み制御ロール部８０が厚み制御手段として配設
されている以外、従来の粘着テープの製造装置１００
（図８参照）と基本構成は同様である。即ち、塗布装置
３００Ａは、粘着剤組成物を塗布する塗布部４０とエネ
ルギー線として紫外線を照射する照射部７０とを有し、
更に、剥離フィルム３を供給する巻出し部３０、剥離フ
ィルム５を積層する積層部５０及び粘着剤層４が形成さ
れた粘着テープ１ａを巻き取る巻取り部９０とを有して
いる。塗布部４０は、上面ロール４２と下面ロール４４
とが一対に配置され、下面ロール４４には粘着剤組成物
４ａを供給するためのダム４６が付設されている。The manufacturing apparatus 300A shown in FIG.
6, except that a thickness control roll portion 80 including a pair of upper roll 82 and lower roll 84 having a thickness 6 is provided as a thickness control means.
(See FIG. 8) The basic configuration is the same. That is, the coating device 300A has a coating unit 40 for coating the adhesive composition and an irradiation unit 70 for irradiating ultraviolet rays as energy rays,
Further, it has an unwinding section 30 for supplying the release film 3, a lamination section 50 for laminating the release film 5, and a winding section 90 for winding the adhesive tape 1a on which the adhesive layer 4 is formed. The application unit 40 includes an upper roll 42 and a lower roll 44.
And a dam 46 for supplying the pressure-sensitive adhesive composition 4a is attached to the lower roll 44.
【００２４】上面ロール４２と下面ロール４４の間には
所定の間隙４８が形成され、剥離フィルム３が前記間隙
４８を通過する際に、粘着剤組成物４ａが剥離フィルム
３上に塗布されるしくみとなっている。A predetermined gap 48 is formed between the upper roll 42 and the lower roll 44, and the pressure-sensitive adhesive composition 4 a is applied onto the release film 3 when the release film 3 passes through the gap 48. It has become.
【００２５】塗布装置３００Ａを使って、図１の粘着テ
ープ１ａの製造工程を説明する。The manufacturing process of the pressure-sensitive adhesive tape 1a shown in FIG. 1 will be described using the coating device 300A.
【００２６】まず、巻出し部３０の巻出し軸３２に装着
された剥離フィルム３のウエブ３４から剥離フィルム３
が、塗布部４０まで引き出される。First, the release film 3 is removed from the web 34 of the release film 3 attached to the unwinding shaft 32 of the unwinding section 30.
Is drawn out to the application unit 40.
【００２７】塗布部４０は、上面ロール４２と下面ロー
ル４４とが一対に配置され、下面ロール４４には粘着剤
組成物４ａを供給するためのダム４６が付設されてい
る。The application section 40 has an upper roll 42 and a lower roll 44 arranged in a pair, and the lower roll 44 is provided with a dam 46 for supplying the adhesive composition 4a.
【００２８】上面ロール４２と下面ロール４４の間には
所定の間隙４８が形成され、剥離フィルム３が前記間隙
４８を通過する際に、粘着剤組成物４ａが剥離フィルム
３上に塗布されるしくみとなっている。A predetermined gap 48 is formed between the upper roll 42 and the lower roll 44, and the pressure-sensitive adhesive composition 4 a is applied to the release film 3 when the release film 3 passes through the gap 48. It has become.
【００２９】次に、剥離フィルム５が、剥離フィルムウ
エブ（図示せず）から引き出され、粘着剤組成物４ａ上
に載置され、積層部５０の一対に配置された上面ロール
５２と下面ロール５４との間隙５８を通過する際に、粘
着剤組成物４ａ上に剥離フィルム５が積層される。Next, the release film 5 is pulled out from a release film web (not shown), placed on the pressure-sensitive adhesive composition 4a, and arranged on a pair of the laminating section 50, an upper roll 52 and a lower roll 54. The release film 5 is laminated on the pressure-sensitive adhesive composition 4a when passing through the gap 58 between the pressure-sensitive adhesive composition 4a.
【００３０】粘着剤組成物４ａと剥離フィルム５が積層
された剥離フィルム３は、エネルギー線として紫外線を
照射する照射部７０に搬送される。ここで、照射部７０
には、金属製の照射室７１中に剥離フィルムの移動を支
持する支持ローラ７３と、エネルギー線として紫外線を
照射する光源ランプ７２とが配備されている。照射室７
１内に搬送された剥離フィルム３上の粘着剤組成物４ａ
には、上記光源ランプ７２から紫外線が照射され、それ
により重合反応を開始し、重合反応終了後に粘着剤層４
となる。光源ランプ７２の紫外線の強度は、粘着剤組成
物４ａが照射室７１を通過する間に重合反応がほぼ完了
するように設定されている。The release film 3 on which the pressure-sensitive adhesive composition 4a and the release film 5 are laminated is conveyed to an irradiation section 70 for irradiating ultraviolet rays as energy rays. Here, the irradiation unit 70
Are provided with a support roller 73 for supporting the movement of the release film in a metal irradiation chamber 71 and a light source lamp 72 for irradiating ultraviolet rays as energy rays. Irradiation room 7
1. Pressure-sensitive adhesive composition 4a on release film 3 conveyed in 1
Is irradiated with ultraviolet rays from the light source lamp 72, thereby starting a polymerization reaction.
Becomes The intensity of the ultraviolet light of the light source lamp 72 is set so that the polymerization reaction is almost completed while the pressure-sensitive adhesive composition 4a passes through the irradiation chamber 71.
【００３１】本発明においては、粘着剤組成物４ａの重
合反応開始から重合反応がほぼ完了するまでの間に、粘
着剤組成物４ａを厚み制御ロール部８０の一対の上面ロ
ール８２及び下面ロール８４との間を通過させる。これ
により、粘着組成物４ａの膨れを押圧して解消させてそ
の厚みを平坦化することができる。ここで、重合反応が
ほぼ完了するという意味は、重合率が９０％以上である
ことを意味する。In the present invention, during the period from the start of the polymerization reaction of the pressure-sensitive adhesive composition 4a until the polymerization reaction is almost completed, the pressure-sensitive adhesive composition 4a is transferred to the pair of upper roll 82 and lower roll 84 of the thickness control roll section 80. And pass between. Thereby, the swelling of the pressure-sensitive adhesive composition 4a can be eliminated by pressing, and the thickness can be flattened. Here, the meaning that the polymerization reaction is almost completed means that the polymerization rate is 90% or more.
【００３２】厚み制御ロール部８０は、通常、図５のよ
うに紫外線照射部７０の内部の一箇所に配設されるが、
重合反応が終了する前であれば、複数配置することも可
能である（図示せず）。また、厚み制御ロール部８０の
ロール径を大きく設計する必要がある場合は、図６の製
造装置３００Ｂのように、照射部７０を前半７０ａ及び
後半７０ｂに分割し、その間に厚み制御ロール部８０を
設置してもよい。The thickness control roll section 80 is usually provided at one place inside the ultraviolet irradiation section 70 as shown in FIG.
Before the end of the polymerization reaction, a plurality of units can be arranged (not shown). When it is necessary to design the roll diameter of the thickness control roll unit 80 to be large, the irradiation unit 70 is divided into a first half 70a and a second half 70b as shown in the manufacturing apparatus 300B in FIG. May be installed.
【００３３】また、厚み制御ロール部８０は、特に、粘
着剤組成物４ａの重合率が８０％を超えない位置に配置
することが好ましい。重合率が８０％を超えた位置で厚
み制御ロール部８０を通過させても、粘着剤組成物４ａ
の種類によっては厚みの調整が十分でない場合がある。It is particularly preferable that the thickness control roll section 80 is disposed at a position where the degree of polymerization of the pressure-sensitive adhesive composition 4a does not exceed 80%. The adhesive composition 4a can be passed through the thickness control roll 80 at a position where the degree of polymerization exceeds 80%.
Depending on the type, the adjustment of the thickness may not be sufficient.
【００３４】ここで、粘着剤組成物４ａの重合率を制御
するため、例えば、図７の製造装置３００Ｃのように照
射部７０に設ける光源ランプを前半の光源ランプ７２ａ
と後半の光源ランプ７２ｂに分割し、７２ａの光源ラン
プの照度を７２ｂの光源ランプの照度より小さくすると
粘着剤組成物４ａの重合率が８０％以下の範囲を安定的
に得ることができる。この場合、厚み制御ロール部８０
は、図７のように光源ランプ７２ａの後方に配置するこ
とが好ましい。Here, in order to control the polymerization rate of the pressure-sensitive adhesive composition 4a, for example, a light source lamp provided in the irradiation unit 70 as in the manufacturing apparatus 300C of FIG.
When the illuminance of the light source lamp 72a is made smaller than the illuminance of the light source lamp 72b, the polymerization rate of the adhesive composition 4a can be stably obtained in the range of 80% or less. In this case, the thickness control roll 80
Is preferably arranged behind the light source lamp 72a as shown in FIG.
【００３５】一方、厚み制御ロール部８０を通過させる
際の粘着剤組成物４ａ重合率の下限は限定的ではない
が、２０％未満であると通過後に膨れが出現する可能性
があるので、少なくとも２０％とすることが好ましい。On the other hand, the lower limit of the polymerization rate of the pressure-sensitive adhesive composition 4a when passing through the thickness control roll section 80 is not limited, but if it is less than 20%, swelling may occur after passing. Preferably, it is 20%.
【００３６】ここで、本発明の粘着剤組成物４ａは、後
述するように、液粘度を調整する観点から予備重合反応
させておく場合があるが、この予備重合の重合率は通常
１０％以下であり、この重合率の段階で厚み制御ロール
８０を通過させても本発明の効果を得られない。Here, the pressure-sensitive adhesive composition 4a of the present invention may be subjected to a prepolymerization reaction from the viewpoint of adjusting the liquid viscosity, as described later, and the polymerization rate of the prepolymerization is usually 10% or less. The effect of the present invention cannot be obtained even if the film is passed through the thickness control roll 80 at this stage of the polymerization rate.
【００３７】次に、厚み制御ロール部８０により厚さ調
整された粘着剤層４が形成された剥離フィルム３は、照
射部７０から搬出され、巻取り部９０の巻取り軸９２に
より巻き取られ粘着テープウエブ９４となる。つぎに、
このウエブ９４を所定の大きさに裁断することにより、
目的の粘着テープ１ａを得ることができる。Next, the release film 3 on which the pressure-sensitive adhesive layer 4 whose thickness has been adjusted by the thickness control roll section 80 is carried out from the irradiation section 70 and wound up by the winding shaft 92 of the winding section 90. It becomes the adhesive tape web 94. Next,
By cutting the web 94 to a predetermined size,
The desired adhesive tape 1a can be obtained.
【００３８】本発明の製造方法並びに製造装置は、図１
のようないわゆるノンサポート粘着テープ１ａの製造に
好適に適用することができ、更に、図３の粘着テープ１
ｃ及び図４の片面粘着テープ１ｄにも適用することがで
きる。The manufacturing method and the manufacturing apparatus of the present invention are shown in FIG.
3 can be suitably applied to the production of a so-called non-support adhesive tape 1a.
c and the single-sided adhesive tape 1d of FIG. 4 can also be applied.
【００３９】なお、図１の粘着テープ１ａの剥離フィル
ム３及び５のいずれかを剥離し、基材フィルム６を介し
て貼り合わせると、図２に示す粘着テープ１ｂを得るこ
ともできる。When one of the release films 3 and 5 of the adhesive tape 1a shown in FIG. 1 is peeled off and bonded via the base film 6, the adhesive tape 1b shown in FIG. 2 can be obtained.
【００４０】以下、本発明の製造方法に適用できる粘着
テープの構成素材について簡単に説明する。Hereinafter, the constituent materials of the pressure-sensitive adhesive tape applicable to the production method of the present invention will be briefly described.
【００４１】剥離フィルム３及び５は、粘着剤層４の粘
着面を保護する目的で使用される。更に、剥離フィルム
３は、製造工程において粘着剤組成物４ａを支持する機
能があり、剥離フィルム５はエネルギー線として紫外線
照射の際にモノマーが揮発するのを防止する機能があ
る。The release films 3 and 5 are used for protecting the adhesive surface of the adhesive layer 4. Furthermore, the release film 3 has a function of supporting the pressure-sensitive adhesive composition 4a in the manufacturing process, and the release film 5 has a function of preventing the monomer from volatilizing when irradiated with ultraviolet rays as energy rays.
【００４２】剥離フィルム３及び５の基材は、一般に、
ポリエステル、ポリエチレン、ポリプロピレン、ポリカ
ーボネート等の透明プラスチックフィルム、及び紫外線
を透過する紙類が用いられ、これら基材上にシリコーン
化合物やフッ素化合物の薄層を形成することにより、剥
離性が付与される。The base material of the release films 3 and 5 is generally
Transparent plastic films such as polyester, polyethylene, polypropylene, and polycarbonate, and papers that transmit ultraviolet light are used. By forming a thin layer of a silicone compound or a fluorine compound on these substrates, releasability is imparted.
【００４３】剥離フィルム３及び５の厚みは、目的によ
って異なるが、通常１００〜５００μｍである。The thickness of the release films 3 and 5 varies depending on the purpose, but is usually 100 to 500 μm.
【００４４】粘着剤層４は、アクリルモノマー（Ａ）を
主成分とし、光重合開始剤（Ｂ）及び添加剤（Ｃ）が添
加される。The pressure-sensitive adhesive layer 4 has an acrylic monomer (A) as a main component and a photopolymerization initiator (B) and an additive (C).
【００４５】アクリルモノマーは、炭素数が４〜１４の
アルキルアルコールのアクリル酸エステル（Ａ１）及び
前記アクリル酸エステルと共重合可能なアクリル酸及び
アクリル酸エステル（Ａ２）を使用することができる。As the acrylic monomer, an acrylate (A1) of an alkyl alcohol having 4 to 14 carbon atoms and acrylic acid and an acrylate (A2) copolymerizable with the acrylate can be used.
【００４６】アクリル酸エステル（Ａ１）の具体例を挙
げると、ブチルアクリレート、イソアミルアクリレー
ト、２−エチルヘキシルアクリレート、ノニルアクリレ
ート、イソノニルアクリレート、イソオクチルアクリレ
ート、ラウリルアクリレート、デシルアクリレート等が
ある。Specific examples of the acrylate (A1) include butyl acrylate, isoamyl acrylate, 2-ethylhexyl acrylate, nonyl acrylate, isononyl acrylate, isooctyl acrylate, lauryl acrylate, and decyl acrylate.
【００４７】アクリル酸及びアクリル酸エステル（Ａ
２）の具体例を挙げると、アクリル酸、メタクリル酸、
エチルアクリレート、２−ヒドロキシエチルアクリレー
ト、２−ヒドロキシプロピルアクリレート、テトラフル
フリールアクリレート、イソボニルアクリレート、エト
キシエチルアクリレート、ブトキシエチルアクリレー
ト、フェノキシエチルアクリレート、フェニルアクリレ
ート、シクロヘキシルアクリレート等を使用することが
できる。Acrylic acid and acrylic acid ester (A
Specific examples of 2) include acrylic acid, methacrylic acid,
Ethyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, tetrafurfuryl acrylate, isobornyl acrylate, ethoxyethyl acrylate, butoxyethyl acrylate, phenoxyethyl acrylate, phenyl acrylate, cyclohexyl acrylate, and the like can be used.
【００４８】光重合開始剤（Ｂ）は、アセトフェノン系
又はベンゾフェノン系開始剤を好ましく使用することが
でき、具体的には、４−フェノキシジシクロアセトフェ
ノン、４−ｔ−ブチル−ジクロロアセトフェノン、ジフ
ェノキシアセトフェノン、２−ヒドロキシ−２−メチル
−１−フェニルプロパン−１−オン、１−ヒドロキシシ
クロヘキシルフェニルケトン、ベンゾイン、ベンゾイン
メチルエーテル、ベンゾインイソブチルエーテル、ベン
ジルメチルケタール及びこれらの混合物がある。As the photopolymerization initiator (B), an acetophenone-based or benzophenone-based initiator can be preferably used. Specifically, 4-phenoxydicycloacetophenone, 4-t-butyl-dichloroacetophenone, diphenoxy Examples include acetophenone, 2-hydroxy-2-methyl-1-phenylpropan-1-one, 1-hydroxycyclohexyl phenyl ketone, benzoin, benzoin methyl ether, benzoin isobutyl ether, benzyl methyl ketal, and mixtures thereof.
【００４９】添加剤（Ｃ）は、例えば、難燃性を高める
目的で添加されるメラミンシアヌレート等のノンハロゲ
ン難燃剤、粘着剤層の凝集力を高める目的で添加される
不織布又は粘着剤組成物の粘性を調整する目的で添加さ
れるシリカ、ガラスビーズ、マイクロバルーン等があ
る。The additive (C) is, for example, a non-halogen flame retardant such as melamine cyanurate added for the purpose of enhancing the flame retardancy, a nonwoven fabric or an adhesive composition which is added for the purpose of increasing the cohesive force of the adhesive layer. Silica, glass beads, micro-balloons, etc., added for the purpose of adjusting the viscosity of the particles.
【００５０】ところで、上記の（Ａ）、（Ｂ）及び
（Ｃ）を混合した粘着剤組成物は、その液粘度が２〜２
０ｃｐｓと低い場合がある。そこで、この粘着剤組成物
を塗布装置に供給する前に、予め紫外線を照射し予備重
合反応を行って液粘度を１０００〜３０００ｃｐｓに調
整しておくことが好ましい。The pressure-sensitive adhesive composition obtained by mixing the above (A), (B) and (C) has a liquid viscosity of 2 to 2
It may be as low as 0 cps. Therefore, before supplying this pressure-sensitive adhesive composition to the coating apparatus, it is preferable to adjust the liquid viscosity to 1000 to 3000 cps by irradiating ultraviolet rays in advance and performing a prepolymerization reaction.
【００５１】また、予備重合反応によらず、粘着剤組成
物に相溶性の良好なポリマー、例えば、アクリルゴム、
スチレンブタジエン等のゴムを添加することによっても
液粘度を上記の範囲に調整することができる。Also, regardless of the prepolymerization reaction, a polymer having good compatibility with the pressure-sensitive adhesive composition, for example, acrylic rubber,
The liquid viscosity can be adjusted to the above range by adding a rubber such as styrene butadiene.
【００５２】このような粘着剤層４の厚みは、特に限定
はないが、通常５０〜８００μｍである。The thickness of the pressure-sensitive adhesive layer 4 is not particularly limited, but is usually 50 to 800 μm.
【００５３】[0053]
【実施例】以下、本発明を実施例を用いて具体的に説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to embodiments.
【００５４】実施例１ （粘着剤組成物の作成）２−エチルヘキシルアクリレー
ト９０ｇ、アクリル酸１０ｇからなる混合モノマー溶液
１００ｇにアクリルゴム３ｇ（トアクロンＰＳ２２０、
東亜ペイント（株）製）を攪拌機のついた容器で４８時
間攪拌混合し、目的の粘着剤組成物(1)を得た。この組
成物の粘度は、７５０ｃｐｓであった。Example 1 (Preparation of pressure-sensitive adhesive composition) 3 g of acrylic rubber (Taclon PS220, 100 g of a mixed monomer solution consisting of 90 g of 2-ethylhexyl acrylate and 10 g of acrylic acid)
Toa Paint Co., Ltd.) was stirred and mixed in a container equipped with a stirrer for 48 hours to obtain the desired pressure-sensitive adhesive composition (1). The viscosity of this composition was 750 cps.
【００５５】（粘着テープの作成）上記の粘着剤組成物
を図５の製造装置３００Ａのダム４６に投入するととも
に、剥離フィルム３（厚さ５０μｍの両面シリコーン処
理した透明ポリエステルフィルム）を塗布部４０まで引
出し、剥離フィルム３上にこの粘着剤組成物(1)を７０
０μｍとなるように塗布した。(Preparation of Pressure-Sensitive Adhesive Tape) The pressure-sensitive adhesive composition was charged into the dam 46 of the production apparatus 300A shown in FIG. Until the pressure-sensitive adhesive composition (1) is 70
It was applied so as to have a thickness of 0 μm.
【００５６】次に、剥離フィルム５（厚さ５０μｍの片
面シリコーン処理した透明ポリエステルフィルム）を積
層部５０まで引出して粘着剤組成物(1)上に載置し、隙
間５８を通過させ、粘着剤組成物(1)と剥離フィルム５
を積層させた。Next, the release film 5 (a transparent polyester film having a thickness of 50 μm and one-side silicone-treated) was pulled out to the laminating section 50 and placed on the pressure-sensitive adhesive composition (1). Composition (1) and release film 5
Were laminated.
【００５７】次に、エネルギー線として紫外線を照射す
る照射部７０において、粘着剤組成物(1)に紫外線を照
射し重合反応を開始させた。このとき、紫外線を照射す
る光源ランプ７２の照度は、波長３５２ｎｍ、０．４４
ｍＷ／ｃｍ2である。Next, in the irradiation part 70 for irradiating ultraviolet rays as energy rays, the pressure-sensitive adhesive composition (1) was irradiated with ultraviolet rays to start a polymerization reaction. At this time, the illuminance of the light source lamp 72 for irradiating ultraviolet rays has a wavelength of 352 nm, 0.44
mW / cm 2 .
【００５８】次に、粘着剤組成物(1)の重合率が６０％
となる位置に厚み制御ロール部８０を配設し、その隙間
８６を通過させて厚みの調整を行った。Next, the polymerization rate of the pressure-sensitive adhesive composition (1) is 60%.
The thickness control roll portion 80 was disposed at a position where the thickness was controlled, and the thickness was adjusted by passing through the gap 86.
【００５９】次に、エネルギー線として紫外線を照射す
る照射部７０を通過した粘着剤組成物(1)の重合率が９
０％以上となり粘着剤層４となったことを確認したの
ち、巻取り部９０の巻取り軸９２に巻き付けて、粘着テ
ープのウエブ９４を得た。そして、このウエブ９４を幅
１インチに裁断して、目的の粘着テープ１ａを得た。Next, the polymerization rate of the pressure-sensitive adhesive composition (1) passed through the irradiation section 70 for irradiating ultraviolet rays as energy rays is 9
After it was confirmed that the pressure-sensitive adhesive layer 4 became 0% or more and the pressure-sensitive adhesive layer 4 was formed, it was wound around a winding shaft 92 of a winding section 90 to obtain a web 94 of a pressure-sensitive adhesive tape. Then, the web 94 was cut into a width of 1 inch to obtain a target adhesive tape 1a.
【００６０】（評価結果）上記の粘着テープ１ａの粘着
剤層４の厚みを測定し、更に粘着剤層４の膨れの有無を
目視により観察した。その結果、粘着剤層４の厚みは、
約７１０μｍであり、また紫外線照射による膨れも観察
されなかった。(Evaluation Results) The thickness of the pressure-sensitive adhesive layer 4 of the pressure-sensitive adhesive tape 1a was measured, and the presence or absence of swelling of the pressure-sensitive adhesive layer 4 was visually observed. As a result, the thickness of the pressure-sensitive adhesive layer 4 is
It was about 710 μm, and no swelling due to ultraviolet irradiation was observed.
【００６１】実施例２ （粘着剤組成物の作成）２−エチルヘキシルアクリレー
ト９０ｇ、アクリル酸１０ｇからなる混合モノマー溶液
１００ｇに、光重合開始剤として２−ヒドロキシ−２−
メチル−１−フェニルプロパン−１−オン（ダロキユア
１１７３、メルク社）を攪拌機のついた容器で攪拌しな
がら、窒素雰囲気下で紫外線照射装置により紫外線を照
射して目的の粘着剤組成物(2)を得た。この組成物の粘
度は、７００ｃｐｓであり、重合率は約５％であった。Example 2 (Preparation of pressure-sensitive adhesive composition) To 100 g of a mixed monomer solution consisting of 90 g of 2-ethylhexyl acrylate and 10 g of acrylic acid was added 2-hydroxy-2-hydroxy photo-initiator.
While stirring methyl-1-phenylpropan-1-one (Daroquia 1173, Merck) in a vessel equipped with a stirrer, irradiate ultraviolet rays with an ultraviolet irradiator under a nitrogen atmosphere to obtain the desired pressure-sensitive adhesive composition (2). I got The viscosity of this composition was 700 cps, and the conversion was about 5%.
【００６２】（粘着テープの作成）この粘着剤組成物
(2)を図７の製造装置３００Ｃを使って、実施例１と同
様に粘着テープ１ａを作成した。ここで、厚み制御ロー
ル部８０は光源ランプ７２ａと光源ランプ７２ｂとの間
に配設した。(Preparation of pressure-sensitive adhesive tape) This pressure-sensitive adhesive composition
In (2), an adhesive tape 1a was prepared in the same manner as in Example 1 using the manufacturing apparatus 300C shown in FIG. Here, the thickness control roll unit 80 was disposed between the light source lamp 72a and the light source lamp 72b.
【００６３】照射部７０の前半の光源ランプ７２ａは、
波長３５２ｎｍ、０．４４ｍＷ／ｃｍ2であり、後半の
光源ランプ７２ｂは、波長３６５ｎｍ、照度強度３５．
５ｍＷ／ｃｍ2であり、前半の紫外線光源ランプの照度
を後半に比べ低い設定とした。The light source lamp 72a in the first half of the irradiation unit 70
The wavelength is 352 nm, 0.44 mW / cm 2 , and the latter half of the light source lamp 72 b has a wavelength of 365 nm and an illuminance of 35.
5 mW / cm 2 , and the illuminance of the ultraviolet light source lamp in the first half was set lower than that in the second half.
【００６４】また、前半の光源ランプ７２ａを通過した
際に粘着剤組成物４ａの重合率は７５％であった。The polymerization rate of the pressure-sensitive adhesive composition 4a when passing through the light source lamp 72a in the first half was 75%.
【００６５】（評価結果）上記の粘着テープ１ａを実施
例１と同様の方法で評価した。その結果、上記の粘着テ
ープ１ａの粘着剤層４の厚みは、約７１０μｍであり、
また紫外線照射による膨れも観察されなかった。(Evaluation Results) The above adhesive tape 1a was evaluated in the same manner as in Example 1. As a result, the thickness of the pressure-sensitive adhesive layer 4 of the pressure-sensitive adhesive tape 1a is about 710 μm,
In addition, no swelling due to ultraviolet irradiation was observed.
【００６６】比較例１ 実施例２の粘着剤組成物(2)を用い、図８の従来の製造
装置１００を使用した以外は、実施例１と同様の方法に
より粘着テープ１ａを製造した。Comparative Example 1 An adhesive tape 1a was produced in the same manner as in Example 1 except that the adhesive composition (2) of Example 2 was used and the conventional production apparatus 100 shown in FIG. 8 was used.
【００６７】（評価結果）上記の方法で製造された粘着
テープ１ａは、粘着剤層４に紫外線照射の際に発生する
膨れが観察され、また、粘着剤層４の厚み（目標厚＝７
００μｍ）には、７５０μｍを超える箇所が測定され
た。(Evaluation Results) In the pressure-sensitive adhesive tape 1a manufactured by the above method, swelling generated when the pressure-sensitive adhesive layer 4 was irradiated with ultraviolet rays was observed, and the thickness of the pressure-sensitive adhesive layer 4 (target thickness = 7).
(00 μm), a portion exceeding 750 μm was measured.
【００６８】[0068]
【発明の効果】本発明によれば、膨れがなく、厚みが均
一である粘着剤層を有する粘着テープを得ることができ
る。According to the present invention, it is possible to obtain a pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer having a uniform thickness without swelling.
【図１】本発明の製造方法により得られる粘着テープの
断面図である。FIG. 1 is a sectional view of a pressure-sensitive adhesive tape obtained by a production method of the present invention.
【図２】本発明の製造方法により得られる粘着テープの
断面図である。FIG. 2 is a cross-sectional view of the pressure-sensitive adhesive tape obtained by the production method of the present invention.
【図３】本発明の製造方法により得られる粘着テープの
断面図である。FIG. 3 is a cross-sectional view of the pressure-sensitive adhesive tape obtained by the production method of the present invention.
【図４】本発明の製造方法により得られる粘着テープの
断面図である。FIG. 4 is a cross-sectional view of the pressure-sensitive adhesive tape obtained by the production method of the present invention.
【図５】本発明の製造装置の概略図である。FIG. 5 is a schematic view of a manufacturing apparatus of the present invention.
【図６】本発明の製造装置の部分概略図である。FIG. 6 is a partial schematic view of the manufacturing apparatus of the present invention.
【図７】本発明の製造装置の部分概略図である。FIG. 7 is a partial schematic view of the manufacturing apparatus of the present invention.
【図８】従来の粘着テープ製造装置の概略図である。FIG. 8 is a schematic view of a conventional adhesive tape manufacturing apparatus.
【図９】従来の粘着テープ製造装置の部分概略図であ
る。FIG. 9 is a partial schematic view of a conventional adhesive tape manufacturing apparatus.
３０…巻出し部、４０…塗布部、５０…積層部、７０…
照射部、８０…厚み制御ロール部、９０…巻取り部30 ... unwinding part, 40 ... coating part, 50 ... lamination part, 70 ...
Irradiation unit, 80: thickness control roll unit, 90: winding unit
Claims (6)
重合反応させることにより形成された粘着剤層を有する
粘着テープの製造方法において、 粘着剤組成物に対しエネルギー線の照射を開始した後、
粘着剤組成物の重合反応がほぼ完了するまでの間に、粘
着剤組成物の厚みを厚み制御手段により調整することを
特徴とする製造方法。1. A method for producing a pressure-sensitive adhesive tape having a pressure-sensitive adhesive layer formed by irradiating an energy ray onto a pressure-sensitive adhesive composition to cause a polymerization reaction, comprising the steps of: starting irradiation of the pressure-sensitive adhesive composition with an energy ray; ,
A production method characterized in that the thickness of the pressure-sensitive adhesive composition is adjusted by thickness control means until the polymerization reaction of the pressure-sensitive adhesive composition is substantially completed.
のロールであり、粘着剤組成物をその一対のロール間を
通過させることにより厚み調整を行う請求項１記載の製
造方法。2. The method according to claim 1, wherein the thickness control means is a pair of rolls having a predetermined gap, and the thickness is adjusted by passing the pressure-sensitive adhesive composition between the pair of rolls.
組成物の重合率が８０％以下である請求項２記載の製造
方法。3. The production method according to claim 2, wherein the polymerization rate of the pressure-sensitive adhesive composition when passing between the pair of rolls is 80% or less.
塗布手段と、テープ状基材上の粘着剤組成物に更に剥離
フィルムを積層する積層手段と、粘着剤組成物が剥離フ
ィルムとテープ状基材との間に挟持されてなる積層体に
エネルギー線を照射し、粘着剤組成物を重合反応させて
粘着剤層とするための照射手段とを少なくとも有する粘
着テープの製造装置において、粘着剤組成物に対しエネ
ルギー線の照射を開始した後、粘着剤組成物の重合反応
がほぼ完了するまでの間に、粘着剤組成物の厚みを調整
するための厚み制御手段が照射手段に設けられているこ
とを特徴とする製造装置。4. A coating means for applying the pressure-sensitive adhesive composition to the tape-shaped substrate, a laminating means for further laminating a release film on the pressure-sensitive adhesive composition on the tape-shaped substrate, In a device for producing a pressure-sensitive adhesive tape having at least an irradiation means for irradiating an energy ray to the laminated body sandwiched between the tape-shaped substrate and a pressure-sensitive adhesive layer by polymerizing the pressure-sensitive adhesive composition, After starting irradiation of the adhesive composition with energy rays, until the polymerization reaction of the adhesive composition is almost completed, a thickness control means for adjusting the thickness of the adhesive composition is provided in the irradiation means. A manufacturing apparatus characterized in that:
対のロールであり、粘着剤組成物をその一対のロール間
を通過させることにより厚み制御を行う請求項４記載の
製造装置。5. The manufacturing apparatus according to claim 4, wherein the thickness control means is a pair of rolls having a predetermined gap, and the thickness is controlled by passing the pressure-sensitive adhesive composition between the pair of rolls.
射手段において粘着剤組成物の重合率が８０％を超えな
い位置に配設されている請求項５記載の製造装置。6. The production apparatus according to claim 5, wherein the pair of rolls serving as the thickness control means are disposed at positions where the polymerization rate of the pressure-sensitive adhesive composition does not exceed 80% in the irradiation means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26953499A JP3834709B2 (en) | 1999-09-22 | 1999-09-22 | Method and apparatus for producing adhesive tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26953499A JP3834709B2 (en) | 1999-09-22 | 1999-09-22 | Method and apparatus for producing adhesive tape |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005223489A Division JP4557166B2 (en) | 2005-08-01 | 2005-08-01 | Method and apparatus for producing adhesive tape |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001089719A true JP2001089719A (en) | 2001-04-03 |
| JP3834709B2 JP3834709B2 (en) | 2006-10-18 |
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ID=17473732
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005179515A (en) * | 2003-12-19 | 2005-07-07 | Nitto Denko Corp | Manufacturing process of pressure sensitive adhesive tape, its apparatus and pressure sensitive adhesive tape |
| JP2007023240A (en) * | 2005-07-21 | 2007-02-01 | Nitto Denko Corp | Photoreaction product sheets, method and apparatus for producing photoreaction product sheets |
| WO2024019153A1 (en) * | 2022-07-22 | 2024-01-25 | 日東電工株式会社 | Method for producing pressure-sensitive adhesive sheet and method for producing optical film with pressure-sensitive adhesive sheet |
-
1999
- 1999-09-22 JP JP26953499A patent/JP3834709B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005179515A (en) * | 2003-12-19 | 2005-07-07 | Nitto Denko Corp | Manufacturing process of pressure sensitive adhesive tape, its apparatus and pressure sensitive adhesive tape |
| JP2007023240A (en) * | 2005-07-21 | 2007-02-01 | Nitto Denko Corp | Photoreaction product sheets, method and apparatus for producing photoreaction product sheets |
| US8093310B2 (en) | 2005-07-21 | 2012-01-10 | Nitto Denko Corporation | Sheet-like products of photoreaction, as well as manufacturing method and apparatus for sheet-like products of photoreaction |
| WO2024019153A1 (en) * | 2022-07-22 | 2024-01-25 | 日東電工株式会社 | Method for producing pressure-sensitive adhesive sheet and method for producing optical film with pressure-sensitive adhesive sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3834709B2 (en) | 2006-10-18 |
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