WO2014019429A1 - 一种重离型力且表面带微粘性的离型膜及其制备方法 - Google Patents

一种重离型力且表面带微粘性的离型膜及其制备方法 Download PDF

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Publication number
WO2014019429A1
WO2014019429A1 PCT/CN2013/078100 CN2013078100W WO2014019429A1 WO 2014019429 A1 WO2014019429 A1 WO 2014019429A1 CN 2013078100 W CN2013078100 W CN 2013078100W WO 2014019429 A1 WO2014019429 A1 WO 2014019429A1
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Prior art keywords
release
sensitive adhesive
release film
substrate
pressure sensitive
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PCT/CN2013/078100
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English (en)
French (fr)
Inventor
夏新月
席忠飞
葛爱文
叶勇
杨守成
华星旸
周运垚
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深圳市摩码科技有限公司
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Priority to US14/416,638 priority Critical patent/US20150267085A1/en
Publication of WO2014019429A1 publication Critical patent/WO2014019429A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/002—Pretreatement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/007—After-treatment
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
    • C09J183/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/40—Adhesives in the form of films or foils characterised by release liners
    • C09J7/401—Adhesives in the form of films or foils characterised by release liners characterised by the release coating composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2383/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J201/00—Adhesives based on unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
    • C09J2301/302—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being pressure-sensitive, i.e. tacky at temperatures inferior to 30°C
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2483/00—Presence of polysiloxane
    • C09J2483/005—Presence of polysiloxane in the release coating
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
    • Y10T428/266—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension of base or substrate
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/28—Web or sheet containing structurally defined element or component and having an adhesive outermost layer
    • Y10T428/2852—Adhesive compositions

Definitions

  • the invention relates to the technical field of preparation of release materials, in particular to a release film with a heavy release force and a preparation method thereof.
  • Release film is also called anti-mucosa, ie l iner, release film is polyethylene terephthalate plastic (referred to as PET), biaxially oriented polypropylene film plastic (abbreviated as B0PP), polyethylene plastic (referred to as PE), carbonate plastic (PC), polystyrene plastic (PS), polypropylene plastic (CPP), a surface made of a substrate with low surface energy, and the peeling force between the tape and the tape Adjusted product.
  • PET polyethylene terephthalate plastic
  • B0PP biaxially oriented polypropylene film plastic
  • PE polyethylene plastic
  • PC carbonate plastic
  • PS polystyrene plastic
  • CPP polypropylene plastic
  • the release film is characterized by a smooth surface, high cleanliness, stable dimensional processing, transparency and color adjustment, and a wide range of film thicknesses and substrate types.
  • the use of release films allows for the development of deep processing of components in the optical and electronic fields to accommodate more and more automated production processes in this field
  • the final requirement of the release film is to achieve a stable release force (the force value detected at a peel speed of 300 ⁇ / min at a 180 degree angle) under the premise that the physical properties of the carrier film meet the requirements.
  • the release film is compounded with the molten solid hot melt adhesive surface and the thermosetting adhesive (mainly used for flexible printed circuit board FPC ⁇ t copper foil substrate FCCIA prepreg)
  • the release film surface needs to have weak viscosity while leaving The force should be above 300 g/inch.
  • the heavier release force can make the surface of the glue adhere to the release surface, and the weak viscosity makes the peeling force not too heavy.
  • the traditional release film only adjusts the release force by simply adding the release force modifier silicone resin, and the silicone resin itself cannot crosslink with the formulation body, resulting in extremely unstable release force during storage. And can not be combined with special rubber surface.
  • the present invention provides a release film having a heavy release force and a slightly viscous surface, and a method of preparing the same.
  • the invention provides a release film with a heavy-duty force and a slightly viscous surface, comprising a substrate and a release layer.
  • the substrate is one of PET, B0PP, PE, PC, PS and CPP
  • the release layer Includes components with the following mass fractions: 10 - 25 parts vinyl silicone oil, 0.5 - 5 parts cross-linking agent, 15 - 40 parts silicone resin, 25 - 60 parts pressure sensitive adhesive, 1 - 6 parts curing agent, 30 - 60 parts of diluent, wherein the crosslinking agent is hydrogen-containing silicone oil, silicone resin is vinyl MQ silicone resin, pressure sensitive adhesive is platinum catalytic addition silicone pressure sensitive adhesive or silicone modified acrylic pressure sensitive adhesive, curing agent is Platinum.
  • the substrate is corona treated to a thickness of 12 let-250, and the width is 200 ⁇ - 1500 ⁇ ;
  • the viscosity of the vinyl silicone oil is 4500 cps - 20000 cps, and the viscosity of the pressure sensitive adhesive is 15000 cps - 50000 Cps, silicone viscosity ranges from 200 cps to 1500 cps.
  • the mass fraction of each component of the release film is: 10 - 25 parts of vinyl silicone oil, 1 - 2.5 parts of crosslinking agent, 15 - 30 parts of silicone resin, 25 - 35 parts of pressure sensitive adhesive, 1.5 - 3 of curing agent Parts, thinner 30 - 60 parts.
  • the present invention also discloses a process for preparing the above release film.
  • the preparation method comprises the following steps:
  • step (1) the surface moisture is removed by hot air, the static electricity is removed by the ion air gun, and the dust and foreign matter are removed by the silica gel dust removing roller; the mixing is performed using a central dispersion disc during mixing in step (2), the speed is 800 rpm, time 30 After the addition of the curing agent, the stirring time is 10 minutes; the step of applying the releasing agent in the step (3) specifically refers to first coating the undercoat layer on the substrate, pre-curing, and coating on the undercoat layer. The release layer is cured, the undercoat layer is coated with the release layer, and finally enters the oven to be cured and wound.
  • the release film disclosed by the invention has a heavy release force and a surface microstrip adhesiveness, especially for the surface of the unmelted hot melt adhesive, the flexible printed circuit board FPC reinforcing sheet glue, and the soft copper foil substrate FCCL glue.
  • the combination method is very convenient, and the preparation method of the above release film is simple, convenient to operate and cost-saving.
  • the embodiment of the invention discloses a release film with a heavy release force and a slightly viscous surface and a preparation method thereof. There are three steps involved in preparing such a release film:
  • Step 1 pre-cleaning the substrate with hot air to remove the moisture adsorbed by the surface, the ion wind gun removes static electricity carried on the surface of the substrate, and removes dust and foreign matter on the surface of the substrate by using a silica gel dust removing roller;
  • the cross-linking agent is a hydrogen-containing silicone oil having a viscosity of 200 cps and a silicone resin having a viscosity of 500 cps.
  • the pressure-sensitive adhesive type is a platinum-catalyzed silicone pressure-sensitive adhesive having a viscosity of 3000 cps and a curing agent of platinum.
  • the mass fraction of the vinyl silicone oil, the crosslinking agent, the pressure sensitive adhesive, the silicone resin and the diluent are firstly stirred uniformly, stirred using a central dispersion tray, at a speed of 800 rpm for 30 minutes, and finally the curing agent is added to be stirred. Stir at speed for 10 minutes.
  • Step 3 coating the release agent, the specific operation is: first applying an undercoat layer on one side of the substrate treated in the first step to pre-cure; then coating the release layer on the undercoat layer to perform curing, The undercoat layer is coated with the release layer; finally, the oven is cured and wound to obtain a finished release film.
  • Embodiment 2 - 5 A method for manufacturing a heavy-duty force and a surface with a weakly viscous release film, the operation steps are the same as those in the first embodiment, and the specific mass fraction of each component is as shown in the following table:
  • Test method for release force TESA7475 standard tape, stripped at 300 mm/mn, 180 degrees
  • the release film disclosed in the present invention has the advantages of heavy release force and slight viscosity of the surface, and the preparation method of the above release film is simple, convenient to operate, and cost-effective.

Abstract

本发明公开了一种重离型力且表面微带粘性的离型膜及其制备方法。离型膜的离型层包括以下质量份额的组份：10-25份乙烯基硅油，0.5-5份交联剂，15-40份硅树脂，25-60份压敏胶，1-6份固化剂，30-60份稀释剂。制备方法是，清理基材表面的水分、静电、灰尘和异物；将上述质量份额的乙烯基硅油、交联剂、压敏胶、硅树脂和稀释剂搅拌均匀，再加入固化剂并进行搅拌；在基材处理过的一面上涂布离型剂并烘干收卷。本发明公开的离型膜离型力稳定，制备方法简单、操作方便，节约成本。

Description

一种重离型力且表面带微粘性的离型膜及其制备方法 技术领域
本发明涉及离型材料制备技术领域， 尤其涉及一种重离型力的离型膜及其 制备方法。
背景技术
离型膜又称防粘膜， 即 l iner,离型膜是以聚对苯二曱酸乙二醇酯塑料 (简 称 PET )、 双向拉伸聚丙烯薄膜塑料（简称 B0PP )、 聚乙烯塑料（简称 PE )、 碳 酸酯塑料（简称 PC )、 聚苯乙烯塑料（简称 PS )、 聚丙烯塑料（简称 CPP )为基 材制作的一种表面具有低表面能的特性， 与胶带之间的剥离力可调节的产品。 离型膜的特点是表面平整、 洁净度高， 后续加工尺寸稳定， 透明度及颜色可调 整， 薄膜的厚度与基材的种类可选择的范围广。 利用离型膜这些特点可以向光 学与电子领域的零部件的深加工发展， 从而适应这一领域越来越多的自动化生 产工艺过程。
离型膜的最终要求是实现在载体膜的物理性能满足要求的前提下获得稳定 的离型力 （在 180度角度下， 以 300 匪 /min的剥离速度下所检测到的力值）。 离型膜在与熔融的固体热熔胶表面、 热固胶（主要应用挠性印制电路板 FPC^t 性铜箔基材 FCCIA半固化片）做复合时， 需要离型膜表面具有微弱粘性同时离 型力要在 300 g/ inch以上，较重的离型力能使胶的表面与离型面充分的粘附在 一起， 而微弱粘性又使得剥离力量不会太重。
传统的离型膜膜只是单纯通过添加剥离力调节剂硅树脂来调节离型力， 并 且硅树脂本身不能与配方主体发生交联， 导致在储存过程离型力极为不稳定， 且与特殊胶面无法复合在一起。
发明内容
有鉴于此， 本发明提供了一种重离型力且表面带微粘性的离型膜及其制备 方法。
本发明的技术方案是：
本发明提供的一种重离型力且表面带微粘性的离型膜，包括基材和离型层， 基材是 PET、 B0PP、 PE、 PC、 PS和 CPP中的一种， 离型层包括有下述质量份额 的组分： 10 - 25份乙烯基硅油， 0.5 - 5份交联剂， 15 - 40份硅树脂， 25 - 60 份压敏胶， 1 - 6份固化剂， 30 - 60份稀释剂， 其中， 交联剂是含氢硅油， 硅树 脂是乙烯基 MQ硅树脂，压敏胶是铂金催化加成型有机硅压敏胶或有机硅改性丙 烯酸压敏胶， 固化剂是铂金。 具体地， 基材经过电晕处理， 厚度为 12 讓 - 250 讓， 宽度为 200匪 - 1500匪； 乙烯基硅油的粘度范围是 4500 cps - 20000 cps, 压敏胶的粘度范围是 15000 cps - 50000 cps, 硅树脂的粘度范围是 200 cps - 1500 cps。
优选地， 离型膜各组份的质量份额为： 乙烯基硅油 10 - 25份， 交联剂 1 - 2.5份， 硅树脂 15 - 30份， 压敏胶 25 - 35份， 固化剂 1.5 - 3份， 稀释剂 30 - 60份。
针对本发明所提供的一种重离型力且表面带微粘性的离型膜， 本发明同时 公开了关于上述离型膜的制备方法。
制备方法包括如下步骤：
( 1 )清理基材表面的水分、 静电、 灰尘和异物；
( 2 )先将上述质量份额的乙烯基硅油、 交联剂、 压敏胶、 硅树脂和稀释剂 搅拌均匀， 再加入固化剂并进行搅拌；
( 3 )在基材按照步骤（1 )处理过的一面上涂布离型剂并烘干， 烘干温度 为 60 - 170 °C 。
优选地， 步骤（1 ) 中利用热风清除表面水分， 利用离子风枪清除静电，利 用硅胶除尘辊清除灰尘与异物； 步骤（2 )中混合时使用中心分散盘搅拌， 速度 是 800 rpm, 时间 30分钟， 加入固化剂后搅拌时间是 10分钟； 步骤（ 3 ) 中涂 布离型剂的步骤具体是指首先在基材上涂布底涂层，进行预固化，再在底涂层上 涂布离型层， 进行固化， 底涂层与离型层连线涂布， 最后进入烘箱后固化收卷。
本发明公开的离型膜具有重离型力且表面微带粘性， 尤其是对未熔融热熔 胶、挠性印制电路板 FPC补强板胶、软性铜箔基材 FCCL胶的表面贴合带来极大 方便， 上述离型膜的制备方法简单、 操作方便、 节约成本。
具体实施方式
描述。
本发明实施例公开了一种重离型力且表面带微粘性的离型膜及其制备方 法。 在制备这种离型膜时包括三个步骤：
步骤一： 预先对基材利用热风清除表面所吸附的水分， 离子风枪清除基材 表面所携带的静电，利用硅胶除尘辊清除基材表面的灰尘与异物；
步骤二：离型剂准备
首先， 按照下列质量份额将材料称量准备好：
乙烯基硅油 17
交联剂 2 硅树脂 33
压敏胶 46
固化剂 2
稀释剂 适量
交联剂为含氢硅油， 粘度在 200 cps,硅树脂的粘度在 500 cps,压敏胶的类 型为铂金催化加成型有机硅压敏胶， 粘度为 3000 cps , 固化剂为铂金。
先将所述质量份额的乙烯基硅油、 交联剂、 压敏胶、 硅树脂与稀释剂充分 搅拌均匀， 使用中心分散盘搅拌， 速度 800 rpm，时间 30分钟， 最后加入固化 剂， 以同样搅拌速度搅拌 10分钟。
步骤三： 涂布离型剂， 具体操作是： 先在步骤一处理过的基材的一面上涂 布底涂层， 进行预固化； 然后在底涂层上涂布离型层， 进行固化， 底涂层与离 型层连线涂布； 最后进入烘箱固化收卷， 得到成品离型膜。
实施例二 -五： 一种重离型力且表面带弱粘性离型膜的制作方法， 操作步 骤同实施例一， 各组分的具体质量份额如下表格所示：
表一
Figure imgf000005_0001
实施例一-五 五种离型膜的离型力测试结果
表二
Figure imgf000006_0001
离型力的检测方法： TESA7475标准胶带， 以 300 mm/mn、 180度剥离
由上述实施例的测试结果可知， 本发明公开的离型膜具有重离型力且表面 带微粘性的优点， 并且上述离型膜的制备方法简单、 方便操作、 节约成本。
上述实施例不用来限定本发明的权利要求， 凡其它未脱离本发明所提示的 精神下所完成的等效改变或修饰， 均应包含在本发明的权利要求内。

Claims

权 利 要 求 书
1、 一种重离型力且表面带微粘性的离型膜， 包括离型层和基材， 其特征在 于： 所述基材是 PET、 B0PP、 PE、 PC、 PS和 CPP中的一种， 所述离型层包括下 列质量份额的组分：
乙婦基娃油 10- 25
交联剂 0.5 - 5
硅树脂 15 - 40
压敏胶 25 - 60
固化剂 1 - 6
稀释剂 30- 60
所述交联剂是含氢硅油， 所述硅树脂是乙烯基 MQ硅树脂， 所述压敏胶是铂 金催化加成型有机硅压敏胶或有机硅改性丙烯酸压敏胶， 所述固化剂是铂金。
2、 根据权利要求 1所述的离型膜， 其特征在于： 所述基材经过电晕处理， 厚度为 12 urn - 250 urn, 宽度为 200 mm - 1500 mm。
3、根据权利要求 1所述的离型膜， 其特征在于： 所述乙烯基硅油的粘度范 围是 4500 cps - 20000 cps, 所述压敏胶的粘度范围是 15000 cps - 50000 cps, 所述硅树脂的粘度范围是 200 cps - 1500 cps。
4、根据权利要求 1所述的离型膜， 其特征在于： 所述离型膜各组份的质量 份额为：
乙烯基硅油 10- 25
交联剂 1 - 2.5
硅树脂 15 - 30
压敏胶 25 - 35
1. 5 - 3 稀释剂 30 - 60
5、 根据权利要求 1所述的离型膜， 其特征在于：
CH3
H3C十 Si— 0+C=CH
所述乙烯基硅 CH3
所述硅树脂的
Figure imgf000008_0001
所述压敏胶的结构式是 = 甲基， 苯基， 垸基， 羟基， 乙烯基 。
6、 一种制作重离型力且表面带微粘性的离型膜的制作方法， 其特征在于： 所述方法包括如下步骤：
( 1 ) 清理基材表面的水分、 静电、 灰尘和异物；
( 2 )先将如权利要求 1所述质量份额的乙烯基硅油、 交联剂、 压敏胶、 硅 树脂和稀释剂搅拌均勾， 再加入固化剂并进行搅拌；
( 3 )在基材按照步骤（ 1 )处理过的一面上涂布离型剂并烘干， 烘干温度 为 60 - 170 0C。
7、 根据权利要求 6所述的制作方法， 其特征在于： 所述步骤（1 ) 中利用 热风清除表面水分， 利用离子风枪清除静电， 利用硅胶除尘辊清除灰尘与异物。
8、 根据权利要求 6所述的制作方法， 其特征在于： 所述步骤（2 ) 中混合 时使用中心分散盘搅拌， 速度是 800 rpm, 时间 30分钟， 加入固化剂后搅拌时 间是 1 0分钟。
9、根据权利要求 6所述的制作方法， 其特征在于： 所述涂布离型剂的步骤 是指首先在基材上涂布底涂层， 进行预固化； 再在底涂层上涂布离型层， 进行 固化， 底涂层与离型层连线涂布；最后进入烘箱后固化收卷。
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