JPH0413146B2 - - Google Patents
Info
- Publication number
- JPH0413146B2 JPH0413146B2 JP26560286A JP26560286A JPH0413146B2 JP H0413146 B2 JPH0413146 B2 JP H0413146B2 JP 26560286 A JP26560286 A JP 26560286A JP 26560286 A JP26560286 A JP 26560286A JP H0413146 B2 JPH0413146 B2 JP H0413146B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- polydimethylsiloxane
- terminal hydroxyl
- hydroxyl group
- isocyanate compound
- 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
- -1 silane isocyanate compound Chemical class 0.000 claims description 34
- 229920006267 polyester film Polymers 0.000 claims description 19
- 229910000077 silane Inorganic materials 0.000 claims description 15
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 14
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 14
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 13
- 239000012948 isocyanate Substances 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 8
- PJXBOHHGXMVENU-UHFFFAOYSA-N C[SiH3].N=C=O.N=C=O.N=C=O Chemical compound C[SiH3].N=C=O.N=C=O.N=C=O PJXBOHHGXMVENU-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 3
- 239000010703 silicon Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 10
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 6
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 239000007788 liquid Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000037303 wrinkles Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 238000001723 curing Methods 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- IDCBOTIENDVCBQ-UHFFFAOYSA-N TEPP Chemical compound CCOP(=O)(OCC)OP(=O)(OCC)OCC IDCBOTIENDVCBQ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 2
- 229920002554 vinyl polymer Polymers 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- QOZVPNFFOMWHRW-UHFFFAOYSA-N CCO[SiH3].N=C=O.N=C=O.N=C=O Chemical compound CCO[SiH3].N=C=O.N=C=O.N=C=O QOZVPNFFOMWHRW-UHFFFAOYSA-N 0.000 description 1
- 229920000298 Cellophane Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000013006 addition curing Methods 0.000 description 1
- 238000007259 addition reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000007611 bar coating method Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000009998 heat setting Methods 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920001515 polyalkylene glycol Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 125000005373 siloxane group Chemical group [SiH2](O*)* 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C37/00—Component parts, details, accessories or auxiliary operations, not covered by group B29C33/00 or B29C35/00
- B29C37/0067—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other
- B29C37/0075—Using separating agents during or after moulding; Applying separating agents on preforms or articles, e.g. to prevent sticking to each other using release sheets
Landscapes
- Laminated Bodies (AREA)
Description
産業上の利用分野
本発明は離形フイルム及びその製造法に関し、
更に詳しくは熱変形の少ない、耐久性及び離形性
に優れた、透明な離形フイルム及びその製造法に
関する。
従来技術
離形フイルムは、粘着剤、接着剤等によりなる
粘着面を保護する目的、或は硬化性樹脂例えばウ
レタン樹脂、エポキシ樹脂、不飽和ポリエステル
樹脂等の硬化反応性、成形性を保護する目的等で
用いられ、その量を拡大しつつある。
かかる離形フイルムとして、従来から、ポリエ
ステルフイルムの少なくとも一表面にビニルシロ
キサン基を有するシリコンオイルの硬化物よりな
る皮膜を設けたのが用いられている。この硬化物
は非粘着で離形効果に優れ、また熱安定性に優れ
るという利点を有するが、一方ベースフイルムで
あるポリエステルフイルムとの密着性が十分とは
言い難く耐久性が低い点、及び硬化反応を150℃
以上の高温で行う必要があることからベースフイ
ルムが熱変形し、離形フイルムに皺特に縦皺がは
いるという欠点がある。この皺は広幅の離形フイ
ルムでは重大な欠点となることがある。
発明の目的
本発明の目的は、かかる点を改善し、熱変形が
小さく、耐久性及び離形性に優れた、透明な離形
フイルムを提供することにある。
本発明の別の目的は、上記離性フイルムの製造
法を提供することにある。
発明の構成・効果
本発明のかかる目的は、本発明によれば、
１ ポリエステルフイルムの少なくとも一表面に
シランイソシアネート化合物と末端水酸基を有
するポリジメチルシロキサンの硬化物層を設け
てなる離形フイルム、並びに
２ ポリエステルフイルムの少なくとも一表面
に、シランイソシアネート化合物と末端水酸基
を有するポリジメチルシロキサンの混合物を塗
布し、130℃以下の温度で硬化させて硬化物層
を形成することを特徴とする離形フイルムの製
造法
によつて達成される。
本発明におけるポリエステルは、芳香族二塩基
酸又はそのエステル形成性誘導体とジオール又は
そのエステル形成性誘導体とから製造される結晶
性の線状飽和ポリエステルであり、具体的には、
ポリエチレンテレフタレート、ポリプロピレンテ
レフタレート、ポリブチレンテレフタレート、ポ
リエチレン−２，６−ナフタレートなどが好まし
く例示される。また、これらの一部が他成分に置
換された共重合体や、ポリアルキレングリコール
或は他の樹脂との混合体であつても良い。
本発明におけるポリエステルフイルムは、従来
から知られている方法で製造できる。例えば、上
記ポリエステルを乾燥後溶解し、ダイ（例えばＴ
ダイ、Ｉダイ等）から冷却ドラム上に押出し急冷
して未延伸フイルムとし、該未延伸フイルムを二
軸方向に延伸し、更に熱固定することによつて製
造することができる。フイルムの厚みは、特に制
限がないが、12〜250μｍが好ましい。ポリエス
テルフイルムとしては滑剤を含まないフイルムが
表面平坦性の点で好ましいが、表面粗さ制御のた
め滑剤、例えば炭酸カルシウム、カオリン、シリ
カ、酸化チタン等の如き無機微粒子及び／又は触
媒残渣の析出微粒子等を含有させたフイルムであ
つても良く、またドデジスルホン酸ソーダの如き
帯電防止剤、色調調整剤等の如き他の添加剤を含
有させたフイルムであつても良い。
本発明においてはポリエステルフイルムの少な
くとも一表面、すなわち片面または両面の上に、
シランイソシアネート化合物と末端水酸基を有す
るポリジメチルシロキサンの混合物を塗工し、硬
化させて皮膜を形成して離形フイルムとする。こ
のシランイソシアネート化合物は、分子中に≡Si
−NCO結合を有するものであり、例えばSi
（NCO）4、RnSi（NCO）4-o、（RO）nSi（NCO）4-
ｏ、これらの予備縮合体等があげられる。ここで、
Ｒはメチル、エチル、フエニル、ビニル等の如き
炭化水素基であり、ｎは１、２又は３である。更
に具体的にはメチルシラントリイソシアネート、
エトキシシラントリイソシアネート、シランテト
ライソシアネート等が好ましくあげられる。更
に、上記シランイソシアネート化合物は、上記化
合物と無水硅酸やポリシロキサン化合物とを縮合
し、分子内にシラン元素（Si）に２個以上のイソ
シアネート基（−NCO）が結合した化合物も包
含する。シランイソシアネート化合物は１種でも
良く、また２種以上を用いても良い。これらのう
ちメチルシラントリイソシアネートが特に好まし
い。
更に、末端水酸基を有するポリジメチルシロキ
サンとしては、水酸基を２個有するもの、いわゆ
るシリコンジオールが特に好ましい。このものの
重合度は10以上、更には20〜40が好ましい。
本発明においては、ポリエステルフイルムと離
形性皮膜との密着性を高めるため、シランイソシ
アネート化合物に末端水酸基を有するポリジメチ
ルシロキサンを混合して塗液を調製する。該塗液
は溶媒としてｎ−ヘキサン、トルエン、メチルエ
チルケトン、酢酸エチル等が好ましく用いられ
る。末端水酸基を有するポリジメチルシロキサン
の割合は、シランイソシアネート化合物との総量
に対し、５〜30重量％が好ましい。末端水酸基を
有するポリジメチルシロキサンの割合が大きすぎ
ると、皮膜のポリエステルフイルムへの密着性が
低下するようになり、好ましくない。塗液の塗布
法としては、例えばスピンナーコート法、スプレ
ーコート法、バーコート法、グラビアコート法、
リバースコート法等の各種の塗布方法が用いられ
る。
シランイソシアネート化合物と末端水酸基を有
するポリジメチルシロキサンとは低温反応性にす
ぐれ、例えば特別な触媒を用いなくても空気中の
水分やポリエステルフイルム表面に付着している
水分等で容易に反応が進み、また130℃以下殊に
100〜130℃の温度で反応が十分に進み、硬化物を
形成する。この硬化物からなる皮膜はポリエステ
ルフイルムへの密着性にすぐれ、かつ離形性層と
して優れた作用を奏する。更に、上記硬化反応が
低温で進行することからポリエステルフイルムが
熱変形せず、得られる離形フイルムには皺特に縦
皺が発生してなく、広幅の離形フイルムとして特
に有用である。
また、滑剤を含有していないポリエステルのフ
イルムをベースフイルムとすると、表面平坦性の
優れた離形フイルムとなり、該離形フイルムは特
に複合ガラス板の製造に有用である。
実施例
以下、実施例を掲げて本発明を更に詳細に説明
する。なお、離形フイルムの各種特性の測定は、
下記の方法によつて行つた。
(1) 背面移行性
コーテイング面にポリエステルフイルムを重
ね合わせ、一定荷重をかけた後、コーテイング
面に接したポリエステルフイルム面にマジツク
インクでラインを引き、“はじき”の程度を見
る。
(2) ラブオフ
コーテイング面を指先で数回摩擦し、皮膜の
脱落、密着性を見る。
(3) 離形性
コーテイング面に24mm巾セロテープをゴムロ
ールにて圧着し、インストロン型引張試験機に
て180°方向に剥離し、この時の抵抗値（ｇ／24
mm）をもつて表示する。
(4) 耐摩耗性
コーテイング面を綿布で約50回摩擦した後、
セロテープにて剥離し、この時の抵抗値をもつ
て示す。
比較例 １
ポリジメチルシロキサンとメチルハイドロゲン
ポリシロキサンの混合液に白金触媒を加えて付加
反応させ、硬化させるタイプの信越化学(株)商品名
KS−772を、トルエンに溶解させ固形分濃度５％
の溶液を作つた。
この塗液をポリエステルフイルム（帝人(株)商品
名“テトロンフイルムＳ−100”）に塗布量10ｇ／
m2でコーテイングし、120℃、滞留時間１分間で
乾燥及び硬化反応を行ない、離形フイルムを作つ
た。
この離形フイルムの品質は表−１に示す。
比較例２及び実施例１〜４
メチルシラントリイソシアネート（松本製薬工
業(株)商品名“オルガチツクスSI−300”）にシリコ
ンジオール（末端水酸機を有するポリジメチルシ
ロキサン：信越化学(株)商品名“KPX−400”）を
表−１の割合で混合し、固形分濃度が５％になる
まで酢酸エチルで希釈し、コーテイング塗液を調
製した。
この塗液をポリエステルフイルム（帝人(株)商品
名“テトロンフイルムＳ−100”）に塗布量が10
ｇ／m2になるようにコーテイングし、120℃、滞
留時間１分間で乾燥及び硬化反応を行い離形フイ
ルムを作つた。この離形フイルムの品質は表−１
に示す。
INDUSTRIAL APPLICATION FIELD The present invention relates to a release film and a method for manufacturing the same.
More specifically, the present invention relates to a transparent release film that is less thermally deformed, has excellent durability and release properties, and a method for producing the same. Prior Art Release films are used to protect the adhesive surface of adhesives, adhesives, etc., or to protect the curing reactivity and moldability of curable resins such as urethane resins, epoxy resins, and unsaturated polyester resins. etc., and the amount is being expanded. As such a release film, a polyester film having at least one surface coated with a cured product of silicone oil having a vinyl siloxane group has conventionally been used. This cured product has the advantage of being non-adhesive, has an excellent mold release effect, and has excellent thermal stability, but on the other hand, it has poor adhesion to the polyester film that is the base film, and has low durability. Reaction at 150℃
Since it is necessary to carry out the process at a high temperature above, the base film is thermally deformed and the release film has wrinkles, particularly vertical wrinkles. These wrinkles can be a serious drawback in wide release films. OBJECTS OF THE INVENTION An object of the present invention is to improve the above-mentioned problems and to provide a transparent mold release film that is less thermally deformed and has excellent durability and mold releasability. Another object of the present invention is to provide a method for producing the above release film. Structure and Effects of the Invention The objects of the present invention are as follows: 1. A release film comprising a cured layer of polydimethylsiloxane having a silane isocyanate compound and a terminal hydroxyl group on at least one surface of a polyester film; 2. A release film characterized in that a mixture of a silane isocyanate compound and a polydimethylsiloxane having a terminal hydroxyl group is applied to at least one surface of a polyester film and cured at a temperature of 130°C or less to form a cured product layer. This is achieved through manufacturing methods. The polyester in the present invention is a crystalline linear saturated polyester produced from an aromatic dibasic acid or its ester-forming derivative and a diol or its ester-forming derivative, and specifically,
Preferred examples include polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, and polyethylene-2,6-naphthalate. Further, it may be a copolymer in which a part of these is substituted with other components, or a mixture with polyalkylene glycol or other resin. The polyester film in the present invention can be produced by a conventionally known method. For example, the above polyester is dried, then dissolved, and die (for example, T
It can be produced by extruding the film from a die, an I-die, etc. onto a cooling drum, rapidly cooling it to obtain an unstretched film, biaxially stretching the unstretched film, and further heat-setting it. The thickness of the film is not particularly limited, but is preferably 12 to 250 μm. As the polyester film, a film that does not contain a lubricant is preferable in terms of surface flatness, but in order to control surface roughness, lubricants such as inorganic fine particles such as calcium carbonate, kaolin, silica, titanium oxide, etc. and/or precipitated fine particles of catalyst residue are used. The film may also contain other additives such as an antistatic agent such as sodium dodecylsulfonate, a color tone adjusting agent, and the like. In the present invention, on at least one surface of the polyester film, that is, on one or both sides,
A mixture of a silane isocyanate compound and a polydimethylsiloxane having a terminal hydroxyl group is coated and cured to form a film to form a release film. This silane isocyanate compound has ≡Si in the molecule.
-NCO bond, for example, Si
(NCO) 4 , RnSi(NCO) 4-o , (RO)nSi(NCO) 4-
o , precondensates thereof, and the like. here,
R is a hydrocarbon group such as methyl, ethyl, phenyl, vinyl, etc., and n is 1, 2 or 3. More specifically, methylsilane triisocyanate,
Preferred examples include ethoxysilane triisocyanate and silane tetraisocyanate. Furthermore, the silane isocyanate compound also includes a compound in which the above compound is condensed with silicic anhydride or a polysiloxane compound, and two or more isocyanate groups (-NCO) are bonded to a silane element (Si) in the molecule. One type of silane isocyanate compound may be used, or two or more types may be used. Among these, methylsilane triisocyanate is particularly preferred. Furthermore, as the polydimethylsiloxane having a terminal hydroxyl group, one having two hydroxyl groups, so-called silicon diol, is particularly preferable. The degree of polymerization of this material is preferably 10 or more, more preferably 20-40. In the present invention, in order to improve the adhesion between the polyester film and the release film, a coating liquid is prepared by mixing polydimethylsiloxane having a terminal hydroxyl group with a silane isocyanate compound. The coating liquid preferably uses n-hexane, toluene, methyl ethyl ketone, ethyl acetate, or the like as a solvent. The proportion of polydimethylsiloxane having a terminal hydroxyl group is preferably 5 to 30% by weight based on the total amount with the silane isocyanate compound. If the proportion of polydimethylsiloxane having terminal hydroxyl groups is too large, the adhesion of the film to the polyester film will decrease, which is not preferable. Examples of methods for applying the coating liquid include spinner coating method, spray coating method, bar coating method, gravure coating method,
Various coating methods such as reverse coating are used. Silane isocyanate compounds and polydimethylsiloxanes having terminal hydroxyl groups have excellent low-temperature reactivity; for example, the reaction proceeds easily with moisture in the air or moisture attached to the surface of a polyester film, without using a special catalyst. Also, especially below 130℃
The reaction proceeds sufficiently at a temperature of 100 to 130°C to form a cured product. A film made of this cured product has excellent adhesion to the polyester film and also functions as a release layer. Furthermore, since the curing reaction proceeds at a low temperature, the polyester film is not thermally deformed, and the resulting release film is free of wrinkles, especially vertical wrinkles, and is particularly useful as a wide release film. Furthermore, when a polyester film containing no lubricant is used as the base film, the release film has excellent surface flatness, and the release film is particularly useful for manufacturing composite glass plates. Examples Hereinafter, the present invention will be explained in more detail with reference to Examples. In addition, the measurement of various characteristics of the release film is as follows:
This was done using the following method. (1) Reverse transferability Lay the polyester film on the coated surface and apply a constant load, then draw a line with magic ink on the surface of the polyester film that is in contact with the coated surface and check the degree of "repellency". (2) Rub-off Rub the coating surface several times with your fingertips to check whether the coating comes off or the adhesion. (3) Release property Press a 24mm wide cellophane tape onto the coating surface with a rubber roll, peel it off in a 180° direction using an Instron tensile tester, and the resistance value (g/24
mm). (4) Abrasion resistance After rubbing the coated surface approximately 50 times with cotton cloth,
Peel off with sellotape and show the resistance value at this time. Comparative Example 1 Shin-Etsu Chemical Co., Ltd.'s product name, which is a type in which a platinum catalyst is added to a mixed solution of polydimethylsiloxane and methylhydrogenpolysiloxane, causing an addition reaction and curing.
Dissolve KS-772 in toluene to obtain a solid concentration of 5%.
I made a solution of Apply this coating liquid to polyester film (Teijin Ltd. trade name "Tetron Film S-100") in an amount of 10 g/
m 2 and dried and hardened at 120° C. for a residence time of 1 minute to produce a release film. The quality of this release film is shown in Table 1. Comparative Example 2 and Examples 1 to 4 Methylsilane triisocyanate (Matsumoto Pharmaceutical Co., Ltd., trade name "Orgachix SI-300") and silicon diol (polydimethylsiloxane having a terminal hydroxyl group: Shin-Etsu Chemical Co., Ltd. trade name) "KPX-400") were mixed in the proportions shown in Table 1 and diluted with ethyl acetate until the solid content concentration was 5% to prepare a coating liquid. Apply this coating liquid to a polyester film (Teijin Ltd. product name "Tetron Film S-100") in an amount of 10%.
g/m 2 , and a drying and curing reaction was carried out at 120°C for a residence time of 1 minute to produce a release film. The quality of this release film is shown in Table 1.
Shown below.
【表】
の値であり、“離形性なし”
とした。
[Table] Values are “no mold release”
And so.
Claims (1)
シランイソシアネート化合物と末端水酸基を有す
るポリジメチルシロキサンの硬化物層を設けてな
る離形フイルム。 ２ ポリエステルフイルムの少なくとも一表面
に、シランイソシアネート化合物と末端水酸基を
有するポリジメチルシロキサンの混合物を塗布
し、130℃以下の温度で硬化させて硬化物層を形
成することを特徴とする離形フイルムの製造法。 ３ シランイソシアネート化合物がメチルシラン
トリイソシアネートであり、末端水酸基を有する
ポリジメチルシロキサンがシリコンジオールであ
る特許請求の範囲第２項記載の製造法。 ４ 末端水酸基を有するポリジメチルシロキサン
の量比が、シランイソシアネート化合物との総量
に対し、５〜30重量％である特許請求の範囲第２
項または第３項記載の製造法。[Scope of Claims] 1. A release film comprising a cured layer of a silane isocyanate compound and polydimethylsiloxane having a terminal hydroxyl group on at least one surface of a polyester film. 2. A release film characterized in that a mixture of a silane isocyanate compound and a polydimethylsiloxane having a terminal hydroxyl group is applied to at least one surface of a polyester film and cured at a temperature of 130°C or less to form a cured product layer. Manufacturing method. 3. The manufacturing method according to claim 2, wherein the silane isocyanate compound is methylsilane triisocyanate, and the polydimethylsiloxane having a terminal hydroxyl group is silicon diol. 4. Claim 2, wherein the amount ratio of polydimethylsiloxane having a terminal hydroxyl group is 5 to 30% by weight based on the total amount with the silane isocyanate compound.
The manufacturing method described in item 3 or item 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26560286A JPS63120641A (en) | 1986-11-10 | 1986-11-10 | Mold release film and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26560286A JPS63120641A (en) | 1986-11-10 | 1986-11-10 | Mold release film and manufacture thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63120641A JPS63120641A (en) | 1988-05-25 |
| JPH0413146B2 true JPH0413146B2 (en) | 1992-03-06 |
Family
ID=17419408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26560286A Granted JPS63120641A (en) | 1986-11-10 | 1986-11-10 | Mold release film and manufacture thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63120641A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH062833B2 (en) * | 1988-06-03 | 1994-01-12 | 帝人株式会社 | Release film |
| GB8919918D0 (en) * | 1989-09-04 | 1989-10-18 | Ici Plc | Polymeric film |
| JPH0732042Y2 (en) * | 1990-03-28 | 1995-07-26 | 株式会社ピラミッド | Release sheet |
-
1986
- 1986-11-10 JP JP26560286A patent/JPS63120641A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63120641A (en) | 1988-05-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR960010124B1 (en) | Improvement method of adhesive surface | |
| JP3357678B2 (en) | Easy adhesion polyester film | |
| US4138527A (en) | Sheet or web type materials with a markable adhesive-repellent coating, and a process for their manufacture | |
| US6090482A (en) | Silicone adhesive film | |
| EP0459292B1 (en) | Pressure sensitive adhesives | |
| JPH0583074B2 (en) | ||
| EP0445744A2 (en) | Laminated polyester film | |
| JP2003292895A (en) | Polysiloxane composition and release film | |
| JP2003192987A (en) | Solvent-free polysiloxane coating and release film | |
| JPH0211689A (en) | Heat-bondable silicone adhesive composition | |
| JPS63120641A (en) | Mold release film and manufacture thereof | |
| JP4838921B2 (en) | Silicone easy-adhesive polyester film | |
| JP3287786B2 (en) | Curable silicone composition | |
| JP2781294B2 (en) | Method for producing release film having antistatic performance | |
| JP3366788B2 (en) | Release film | |
| KR100266755B1 (en) | Process for preparing polyester film with good releasability | |
| JP3258057B2 (en) | Silicone easily adhesive film and method for producing the same | |
| JP3004522B2 (en) | Release composite film | |
| JPH0258587A (en) | Production of silicone pressure-sensitive adhesive composition of one-pack type | |
| JP3169716B2 (en) | Transfer type release film | |
| CN116814156B (en) | Composition for release film and release film using same | |
| JPS6346787B2 (en) | ||
| JP2756394B2 (en) | Silicone composition for resin addition | |
| JPH1086285A (en) | Release film | |
| JPH062833B2 (en) | Release film |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |