JPH0124433B2 - - Google Patents
Info
- Publication number
- JPH0124433B2 JPH0124433B2 JP8853482A JP8853482A JPH0124433B2 JP H0124433 B2 JPH0124433 B2 JP H0124433B2 JP 8853482 A JP8853482 A JP 8853482A JP 8853482 A JP8853482 A JP 8853482A JP H0124433 B2 JPH0124433 B2 JP H0124433B2
- Authority
- JP
- Japan
- Prior art keywords
- vinyl chloride
- room temperature
- resin
- hot melt
- melt adhesive
- 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.)
- Expired
Links
- 229920005989 resin Polymers 0.000 claims description 20
- 239000011347 resin Substances 0.000 claims description 20
- 239000004014 plasticizer Substances 0.000 claims description 16
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 claims description 14
- 239000004831 Hot glue Substances 0.000 claims description 12
- 229920001944 Plastisol Polymers 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000004999 plastisol Substances 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000004604 Blowing Agent Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical group CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 claims description 2
- 239000006260 foam Substances 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000012790 adhesive layer Substances 0.000 description 4
- -1 allyl ester Chemical class 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 3
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 3
- 239000011151 fibre-reinforced plastic Substances 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- 239000003381 stabilizer Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 description 2
- 239000004156 Azodicarbonamide Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004641 Diallyl-phthalate Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 2
- 229920002978 Vinylon Polymers 0.000 description 2
- XOZUGNYVDXMRKW-AATRIKPKSA-N azodicarbonamide Chemical compound NC(=O)\N=N\C(N)=O XOZUGNYVDXMRKW-AATRIKPKSA-N 0.000 description 2
- 235000019399 azodicarbonamide Nutrition 0.000 description 2
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 description 2
- QUDWYFHPNIMBFC-UHFFFAOYSA-N bis(prop-2-enyl) benzene-1,2-dicarboxylate Chemical compound C=CCOC(=O)C1=CC=CC=C1C(=O)OCC=C QUDWYFHPNIMBFC-UHFFFAOYSA-N 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 239000006084 composite stabilizer Substances 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000005038 ethylene vinyl acetate Substances 0.000 description 2
- 238000010097 foam moulding Methods 0.000 description 2
- 239000000499 gel Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 1
- 235000014698 Brassica juncea var multisecta Nutrition 0.000 description 1
- 235000006008 Brassica napus var napus Nutrition 0.000 description 1
- 240000000385 Brassica napus var. napus Species 0.000 description 1
- 235000006618 Brassica rapa subsp oleifera Nutrition 0.000 description 1
- 235000004977 Brassica sinapistrum Nutrition 0.000 description 1
- 241000156978 Erebia Species 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 1
- 229920002433 Vinyl chloride-vinyl acetate copolymer Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- MGFRKBRDZIMZGO-UHFFFAOYSA-N barium cadmium Chemical compound [Cd].[Ba] MGFRKBRDZIMZGO-UHFFFAOYSA-N 0.000 description 1
- VJRITMATACIYAF-UHFFFAOYSA-N benzenesulfonohydrazide Chemical compound NNS(=O)(=O)C1=CC=CC=C1 VJRITMATACIYAF-UHFFFAOYSA-N 0.000 description 1
- 238000005537 brownian motion Methods 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007720 emulsion polymerization reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 229940042795 hydrazides for tuberculosis treatment Drugs 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical class OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 125000000472 sulfonyl group Chemical group *S(*)(=O)=O 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
従来より、ホツトメルト接着剤はエチレン−酢
酸ビニル共重合体（EVA）樹脂又はポリアミド
樹脂などのベースレジンに、ロジンや石油樹脂な
どの各種樹脂類による粘着付与剤、及びワツク
ス、パラフインなどの低溶融化と速固化剤などの
変性剤を熱溶融させて混合することにより製造し
ていた。従つて加熱分解型の発泡剤を混入すると
ホツトメルト接着剤製造時に発泡してしまうた
め、常温では未発泡体で加熱使用後に発泡体を形
成する発泡性ホツトメルト接着剤を製造すること
は不可能であつた。
本発明の目的は、常温では未発泡体シート状で
加熱使用後は発泡により体積を膨張して接着充填
機能を発揮する発泡性ホツトメルト接着剤シート
の製造法であり、他の目的は製造し易くかつ発泡
成形による接着層の凝集力の低下を防止又は低減
する発泡性ホツトメルト接着剤シートの製造法で
ある。
本発明は、塩化ビニル用可塑剤中に、塩化ビニ
ル系ペーストレジン及び加熱分解型発泡剤を分散
した常温で液状のプラスチゾルを、多孔質シート
基材に塗布又は含浸し、常温放置又は加熱して、
常温で表面がべとつかない程度に半ゲル化状態に
加工する発泡性ホツトメルト接着剤シートの製造
法である。
本発明で使用する塩化ビニル用可塑剤として
は、DOP、DBPなどのフタル酸エステル系、
TCP（リン酸トリクレジル）などのリン酸エステ
ル系、DOA（ジオクチルアジペート）などのアジ
ペート系、塩化パラフイン系、DAP（ジアリルフ
タレート）モノマーの如きアリルエステル系熱硬
化性可塑剤、アクリル酸エステル系、不飽和ポリ
エステル系などの他に安定剤の役目もなすエポキ
シ系など、加熱することにより塩化ビニル樹脂と
相溶性を有する公知の可塑剤で良い。塩化ビニル
系ペーストレジンとは、塩化ビニルモノマー単独
及び共重合する酢酸ビニルモノマー等を乳化重合
して得られる微粉末状の塩化ビニル樹脂で、ゼオ
ン121、131、135、400×110A（目本ゼオンKK
製）、スミリツトPXN（住友化学工業KK製）な
ど公知の塩化ビニル系ペーストレジンでよいが、
密着性、低温溶融、低温発泡成型を要求する場合
には塩化ビニル−酢酸ビニル共重合体又はカルボ
キシル基などの極性基が導入されているペースト
レジンを混入しておくのが良い。加熱分解型発泡
剤としては、重炭酸ナトリウムなどの無機発泡
体、ニトロソ化合物、アゾジカルボンアミドやア
ゾビス・イソブチロニトリルなどのアゾ化合物、
ベンゼン・スルホニル・ヒドラジドなどのスルホ
ニル・ヒドラジド系など公知の微粉末からなる発
泡体が使用できるが、このうちでもアゾ化合物が
一般的に用いられる。その他プラスチゾル中には
塩化ビニル用安定剤が添加され、金属セツケン
類、無機酸塩類、有機スズ化合物、カルシウム−
亜鉛系、カドミウム有機複合体、カドミウム−バ
リウム系などの複合安定剤などがあるが、液状の
複合安定剤が好適である。また必要に応じて、炭
カル、硅石粉等の無機質フイラーや繊維類も添加
することもできる。次に多孔質シート基材として
は、レーヨンや合成繊維からなる不織布、カンレ
イシヤ、織布、紙類などプラスチゾルが含浸し浸
透し易い網目状のものが適している。また塗布又
は含浸する方法としてはリバースロール、ナイ
フ、カーテンフローなどのスプレツドコーテイン
グ法又はデイツピング（浸漬）法など公知の塗布
又は含浸法が適用できる。塗布又は含浸量として
は所望の任意の量でよいが、50〜500ｇ／m2（厚
さ0.05〜0.5mm）が半ゲル化状態に加工するに適
している。
プラスチゾルはその性質上、(a)常温ではレジン
粒子の表面はわずかに可塑剤で溶媒和している
が、粒子同士は互に自由に移動し、粘稠なゾルと
して流動している。しかし、(b)レジンとの相溶性
が大きく低分子量からなる可塑剤中では常温で経
時後に、また通常の前記可塑剤中でも加熱するこ
とにより、レジン粒子の膨潤はかなり進行して粒
子同士はその表層でルーズに溶け合つて固化し、
もはや流動性は失われるが、粒子の中心部は未ゲ
ル化で、ゲルの物理的強度は乏しく、表面に光沢
なく半透明である（半ゲル化状態）。更に高温に
加熱すると、(c)レジン粒子全体が芯まで完全にゲ
ル化膨潤と同時に溶融して流れ、溶媒和した塩化
ビニル分子は活発なミクロブラウン運動を起こし
て、粒子間の分子同士のからみ合いが強くなり、
物理的強度は最高に達し、表面に光沢を生じ透明
となる（完全溶融状態）。次に、(d)完全溶融状態
中で、加熱分解型発泡剤が分解してガスを発生し
発泡体を形成する（発泡体形成状態）。
本発明は、上記の如きプラスチゾルの性質を利
用して、(a)常温で流動状態にあるプラスチゾル
を、取扱いが容易で接着剤層中ではFRP（繊維強
化プラスチツクス）化する効果を有する多孔質シ
ート基材に、塗布又は含浸して、常温放置又は加
熱することにより、(b)半ゲル化状態に加工するも
のである。また得られた発泡性ホツトメルト接着
剤シートは、(c)完全溶融状態及び(d)発泡体形成状
態を経て接着剤としての機能を発揮するものであ
る。
本発明で重要な要素となる液状のプラスチゾル
を半ゲル化状態とする方法としては、通常作業性
の点から加熱法を採用するが、加熱温度としては
プラスチゾルの表面温度が完全溶融温度又は発泡
剤の分解温度以下で、かつゲル化温度以上の範囲
で行う必要があり、可塑剤の種類及び配合量、ペ
ーストレジンの種類及び配合量、発泡剤の種類、
及び含浸膜厚などにより異なるが通常50〜100℃
の範囲で数分間要すれば製造できる。
この様にして製造された該発泡性ホツトメルト
接着剤シートは、完全溶融温度でかつ発泡剤の分
解温度以上に加熱することにより発泡接着剤又は
シーラントとしての機能を発揮するが、通常150
〜200℃の範囲でその機能を発揮する。そして凹
凸面からなる被着体、ハニカム構造体などの接着
剤として、更にスポツト溶接部等のシール材など
として有用である。
次に本発明を実施例により説明する。
実施例 １
Traditionally, hot melt adhesives have been made using a base resin such as ethylene-vinyl acetate copolymer (EVA) resin or polyamide resin, a tackifier made of various resins such as rosin or petroleum resin, and a low-melting material such as wax or paraffin. It was produced by hot-melting and mixing a modifying agent such as a fast-setting agent with a fast-setting agent. Therefore, if a thermally decomposable foaming agent is mixed in, the hot melt adhesive will foam during production, so it is impossible to produce a foamable hot melt adhesive that is unfoamed at room temperature and forms a foam after heating. Ta. The purpose of the present invention is to provide a method for producing a foamable hot melt adhesive sheet that is in the form of an unfoamed sheet at room temperature and expands in volume by foaming after heating and use to exhibit an adhesive filling function. The present invention also provides a method for producing a foamable hot melt adhesive sheet that prevents or reduces a decrease in the cohesive force of an adhesive layer due to foam molding. The present invention involves coating or impregnating a porous sheet base material with a plastisol that is liquid at room temperature, in which a vinyl chloride paste resin and a thermally decomposable blowing agent are dispersed in a plasticizer for vinyl chloride, and then leaving it at room temperature or heating it. ,
This is a method for producing a foamable hot melt adhesive sheet that is processed into a semi-gelled state to the extent that the surface does not become sticky at room temperature. Plasticizers for vinyl chloride used in the present invention include phthalate esters such as DOP and DBP,
Phosphate-based plasticizers such as TCP (tricresyl phosphate), adipate-based plasticizers such as DOA (dioctyl adipate), chlorinated paraffin-based plasticizers, allyl ester-based thermosetting plasticizers such as DAP (diallyl phthalate) monomer, acrylic ester-based plasticizers, In addition to saturated polyester-based plasticizers, known plasticizers that are compatible with vinyl chloride resin when heated, such as epoxy-based plasticizers that also serve as stabilizers, may be used. Vinyl chloride paste resin is a finely powdered vinyl chloride resin obtained by emulsion polymerization of vinyl chloride monomer alone and copolymerized vinyl acetate monomer, etc. K.K.
Known vinyl chloride paste resins such as Sumirizto PXN (manufactured by Sumitomo Chemical KK) may be used.
When adhesion, low-temperature melting, and low-temperature foam molding are required, it is preferable to mix a vinyl chloride-vinyl acetate copolymer or a paste resin into which a polar group such as a carboxyl group is introduced. Heat-decomposable blowing agents include inorganic foams such as sodium bicarbonate, nitroso compounds, azo compounds such as azodicarbonamide and azobis-isobutyronitrile,
Foams made of known fine powders such as sulfonyl hydrazides such as benzene sulfonyl hydrazide can be used, and among these, azo compounds are generally used. In addition, stabilizers for vinyl chloride are added to plastisol, metal soaps, inorganic acid salts, organic tin compounds, calcium
There are composite stabilizers such as zinc-based, cadmium organic composite, cadmium-barium-based, etc., but liquid composite stabilizers are preferred. Inorganic fillers such as charcoal and silica powder and fibers may also be added as required. Next, as the porous sheet base material, a mesh-like material that is easily impregnated and penetrated by plastisol, such as a nonwoven fabric made of rayon or synthetic fiber, canola, woven fabric, or paper, is suitable. Further, as a coating or impregnating method, a known coating or impregnating method such as a spread coating method using reverse roll, knife, or curtain flow, or a dipping method can be applied. The coating or impregnating amount may be any desired amount, but 50 to 500 g/m 2 (thickness 0.05 to 0.5 mm) is suitable for processing into a semi-gelled state. Plastisol has the following characteristics: (a) At room temperature, the surface of the resin particles is slightly solvated with plasticizer, but the particles move freely among themselves and flow as a viscous sol. However, (b) After aging in a plasticizer with high compatibility with the resin and low molecular weight at room temperature, or by heating in a normal plasticizer, the swelling of the resin particles progresses considerably and the particles are separated from each other. They melt together loosely on the surface layer and solidify,
Although the particles no longer have fluidity, the center of the particles is not gelled, the physical strength of the gel is poor, and the surface is translucent with no gloss (semi-gelled state). When heated to a higher temperature, (c) the entire resin particle completely gels and swells to the core, melts and flows, and the solvated vinyl chloride molecules cause active micro-Brownian motion, causing the molecules between the particles to become entangled. The relationship becomes stronger,
Its physical strength reaches its maximum, and the surface becomes glossy and transparent (completely molten state). Next, (d) in a completely molten state, the thermally decomposable foaming agent decomposes to generate gas and form a foam (foam forming state). The present invention takes advantage of the above-mentioned properties of plastisol to create (a) a porous plastisol that is easy to handle and has the effect of turning into FRP (fiber reinforced plastic) in the adhesive layer; (b) It is processed into a semi-gelled state by applying or impregnating it onto a sheet base material and leaving it at room temperature or heating it. Further, the obtained foamable hot melt adhesive sheet exhibits its function as an adhesive after passing through (c) a completely melted state and (d) a foamed state. As a method for turning liquid plastisol into a semi-gelled state, which is an important element in the present invention, a heating method is usually adopted from the viewpoint of workability. It is necessary to carry out the process at a temperature below the decomposition temperature and above the gelling temperature.
It varies depending on the thickness of the impregnated film, etc., but usually 50 to 100℃
It can be manufactured within a few minutes. The foamable hot melt adhesive sheet produced in this manner functions as a foam adhesive or sealant by heating to the complete melting temperature and above the decomposition temperature of the foaming agent.
It performs its functions in the range of ~200℃. It is useful as an adhesive for adherends with uneven surfaces, honeycomb structures, etc., and as a sealant for spot welds, etc. Next, the present invention will be explained by examples. Example 1
【表】
但し、１ 塩化ビニルペーストレジン（日本ゼ
オン）
２ 塩ビ−酢ビ共重合ペーストレジン（日本ゼオ
ン）
３ カルボキシル基入ペーストレジン（日本ゼオ
ン）
４ ２エチルヘキシルフタレート（可塑剤、積水
化学）
５ ジブチルフタレート（可塑剤、積水化学）
６ アゾジカルボンアミド系発泡剤（永和化成）
７ エポキシ系安定剤（アデカアーガス）
８ 微質炭カル（白石カルシウム）
第１表に示すプラスチゾル配合物を、米坪15
ｇ／m2のビニロン紙（不織布）に約200ｇ／m2
（厚さ約0.2mm）含浸し、80℃の熱風乾燥器中を３
分間要して通過させて常温に冷却し、そのまま巻
きとることにより本発明の発泡性ホツトメルト接
着剤シートを製造した。
次に、網目のついたセメント石綿板表面に凹凸
度0.2〜0.3mmのエンボス加工された銅箔とを、該
発泡性ホツトメルト接着剤シートを挾んで、200
℃の熱風乾燥器中を５分間要して接着した。接着
加工後の接着層は凹凸部も完全に発泡体で充填接
着加工されていることを確認すると共に、接着層
がビニロン紙でFRP化されているので銅箔を剥
離するのが困難であつた。[Table] However, 1 Vinyl chloride paste resin (Nippon Zeon) 2 PVC-vinyl acetate copolymer paste resin (Nippon Zeon) 3 Paste resin with carboxyl group (Nippon Zeon) 4 2 Ethylhexyl phthalate (plasticizer, Sekisui Chemical) 5 Dibutyl Phthalate (plasticizer, Sekisui Chemical) 6 Azodicarbonamide blowing agent (Eiwa Kasei) 7 Epoxy stabilizer (Adeka Argus) 8 Microcharcoal (Shiraishi Calcium)
Approximately 200 g/m 2 on vinylon paper (non-woven fabric) of g/m 2
(approximately 0.2 mm thick) and dried in a hot air dryer at 80℃ for 3 minutes.
The foamable hot-melt adhesive sheet of the present invention was manufactured by passing the adhesive for a few minutes, cooling it to room temperature, and winding it up as it was. Next, an embossed copper foil with an unevenness of 0.2 to 0.3 mm was placed on the surface of the meshed cement asbestos board, and the foamable hot melt adhesive sheet was sandwiched between the sheets.
It took 5 minutes to bond in a hot air dryer at ℃. We confirmed that the uneven parts of the adhesive layer after adhesion were completely filled with foam, and that it was difficult to remove the copper foil because the adhesive layer was made of vinylon paper and made of FRP. .
Claims (1)
ストレジン及び加熱分解型発泡剤を分散した常温
で液状のプラスチゾルを、多孔質シート基材に塗
布又は含浸し、常温放置又は加熱して、常温で表
面がべとつかない程度に半ゲル化状態に加工する
ことを特徴とする発泡性ホツトメルト接着剤シー
トの製造法。 ２ 塩化ビニル系ペーストレジンが、酢酸ビニル
基やカルボキシル基などの極性基が導入されてい
るレジンが混入されている特許請求の範囲第１項
記載の発泡性ホツトメルト接着剤シートの製造
法。[Scope of Claims] 1 Plastisol, which is liquid at room temperature in which a vinyl chloride paste resin and a thermally decomposable blowing agent are dispersed in a plasticizer for vinyl chloride, is applied or impregnated onto a porous sheet base material, and left at room temperature or A method for producing a foamable hot melt adhesive sheet, which is characterized by heating and processing the sheet into a semi-gelled state to the extent that the surface does not become sticky at room temperature. 2. The method for producing a foamable hot melt adhesive sheet according to claim 1, wherein the vinyl chloride paste resin contains a resin into which a polar group such as a vinyl acetate group or a carboxyl group has been introduced.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8853482A JPS58204077A (en) | 1982-05-25 | 1982-05-25 | Preparation of foamable hot-melt adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8853482A JPS58204077A (en) | 1982-05-25 | 1982-05-25 | Preparation of foamable hot-melt adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58204077A JPS58204077A (en) | 1983-11-28 |
| JPH0124433B2 true JPH0124433B2 (en) | 1989-05-11 |
Family
ID=13945500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8853482A Granted JPS58204077A (en) | 1982-05-25 | 1982-05-25 | Preparation of foamable hot-melt adhesive |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58204077A (en) |
-
1982
- 1982-05-25 JP JP8853482A patent/JPS58204077A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58204077A (en) | 1983-11-28 |
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