WO2019006909A1 - 一种柔性无基材的 ab 胶及其制作工艺 - Google Patents

一种柔性无基材的 ab 胶及其制作工艺 Download PDF

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Publication number
WO2019006909A1
WO2019006909A1 PCT/CN2017/106578 CN2017106578W WO2019006909A1 WO 2019006909 A1 WO2019006909 A1 WO 2019006909A1 CN 2017106578 W CN2017106578 W CN 2017106578W WO 2019006909 A1 WO2019006909 A1 WO 2019006909A1
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Prior art keywords
glue
release film
silica gel
oca optical
gel layer
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PCT/CN2017/106578
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English (en)
French (fr)
Inventor
刘沛环
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深圳市汉唐福发展有限公司
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Publication of WO2019006909A1 publication Critical patent/WO2019006909A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/24—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate
    • B32B2037/243—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2255/00—Coating on the layer surface
    • B32B2255/26—Polymeric coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/412—Transparent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/208—Touch screens

Definitions

  • the present invention relates to the field of optical film technology, and more particularly to a flexible substrateless AB adhesive and a process for the same.
  • the AB glue adheres to the 3D curved mobile phone or other curved screens, and the following problems generally exist: 1.
  • the semi-adhesive method is adopted, and the edge of the curved glass is easily entered into the air, dust, and foreign matter. , affect the appearance of 3D curved tempered glass;
  • 2, AB glue due to the hard texture, can not cover the edge of the arc surface, received impact or bumps, the edge of the glass will damage the human body, the same edge compression The strength is not high and it is prone to cracking.
  • the present invention provides a flexible, substrateless AB glue which increases the edge sealing effect with the curved screen and improves the glass strength.
  • a flexible substrateless AB glue which is improved in that it comprises a heavy release film having an upper surface and a lower surface , the lower surface of the heavy release film is used to fit the screen of the 3D mobile phone;
  • the upper surface of the release film is provided with a silica gel layer, and the silica gel layer is coated with OCA optical glue, and the OCA optical glue is used for bonding with 3D curved tempered glass, the OCA optical A light release film is also attached to the glue.
  • the heavy-duty film has a thickness of 50 ⁇ m to 100 ⁇ m.
  • the OCA optical adhesive has a thickness of 100 um to 200 um.
  • the thickness of the silica gel layer is 50 um to 200 um.
  • the light release film has a thickness of 30 um to 75 um.
  • the present invention also provides a flexible substrateless AB adhesive manufacturing process, which is improved in that it comprises the following steps:
  • A using a coater to coat the OCA optical glue on the silica gel layer, and then irradiating the semi-finished product through a UV light tunnel furnace, and irradiating the crucible for 10-20 min for curing, the temperature of the tunnel furnace is 40 ° C -45 ° C;
  • the silica gel layer and the OCA optical gel on the silica gel layer are separately coated, wherein the OCA optical gel coats the light release film, and the silica gel surface covers the heavy release film;
  • the coil product is slit into small rolls by a slitting machine, and then through the film cutting machine, the small-volume AB glue semi-finished product is die-cut into the size of the product by using a die, and the AB glue finished product is formed. .
  • the irradiation time of the UV light is 15 min, and the temperature of the tunnel furnace is 42.5 ° C.
  • the component of the OCA optical glue is an acrylic resin.
  • the adhesion of the OCA glue is 2000-3000 gf/25 mm, and the adhesion of the silicone layer is 10-150 gf/25 mm.
  • the beneficial effects of the present invention are as follows:
  • the invention increases the sealing effect of the edge of the curved screen, improves the transmittance, and the surface of the curved screen is quickly exhausted without air bubbles; in addition, the 3D surface is added.
  • the repellency of tempered glass reduces the risk of damage to the screen of the mobile phone.
  • FIG. 1 is a schematic view showing the explosive structure of a flexible substrateless AB adhesive of the present invention.
  • the present invention discloses a flexible substrateless AB glue, which realizes the bonding of the 3D curved tempered glass and the screen of the 3D mobile phone, thereby realizing the protection of the screen of the 3D mobile phone.
  • the flexible substrateless AB glue comprises a heavy release film 5 having an upper surface and a lower surface, and the lower surface of the heavy release film 5 is adapted to fit the screen of the 3D mobile phone.
  • the upper surface of the heavy-duty film 5 is provided with a silica gel layer 4, and the silica gel layer 4 is adhered with an OCA optical glue 2; by the action of the heavy-release film 5, the silica gel layer 4 is protected from the outside.
  • the OCA optical adhesive 2 is a layer of release film for protecting the silica gel layer 4; the silica gel layer 4 has the characteristics of high exhaust gas permeation rate, and is easy to fit and rework.
  • the OCA optical adhesive 2 has a very strong adhesiveness and a transmittance of more than 90%.
  • the OCA optical adhesive 2 is used for closely fitting with the 3D curved tempered glass, and is convenient for exhausting, so that the entire surface of the 3D curved tempered glass is 3D mobile phone fit, perfect 3D curved tempered glass and 3D mobile phone, improve transmittance and increase glass strength.
  • the OCA optical adhesive 2 is also attached with a light release film 1 , and the light release film 1 is used to protect the OCA from external interference, and is a protective film for protecting the OCA, during the bonding process. rip off.
  • the thickness of the heavy release film 5 is 50 um; the thickness of the OCA optical adhesive 2 is 100 urn; the thickness of the silica gel layer 4 is 50 um; the light release film 1 The thickness is 30um.
  • the thickness of the release film 5, the OCA optical glue 2, the silica gel layer 4, and the light release film 1 may be selected according to actual needs, or the thickness thereof may have an error in production, but does not affect the AB of the present invention.
  • the thickness of the heavy-duty film 5 is 70 um; the thickness of the OCA optical adhesive 2 is 150 um; the thickness of the silica gel layer 4 is 100 um;
  • the light release film 1 has a thickness of 45 ⁇ m.
  • the thickness of the heavy release film 5, the OCA optical glue 2, the silica gel layer 4, and the light release film 1 has a certain range, wherein the thickness of the heavy release film 5 is 50 um to 100 U m;
  • the thickness of the OCA optical glue 2 is 100 um-200 um;
  • the thickness of the silica gel layer 4 is 50 um-200 um;
  • the thickness of the light release film 1 is 30 um - 75 um.
  • the present invention also discloses a process for producing a flexible substrateless AB glue.
  • the process includes the following steps:
  • A using a coater to coat the OCA optical glue 2 on the silica gel layer 4, and then through the UV light tunnel furnace half
  • the finished product is irradiated and irradiated for 15 minutes for curing, and the temperature of the tunnel furnace is 42.5 ° C;
  • the composition of the OCA optical glue 2 is acrylic resin
  • the adhesion of the OCA glue is 2000 gf / 25 mm
  • the adhesion of the silica gel layer 4 is 10gf / 25mm;
  • the coil product is slit into small rolls by a slitting machine, and then through the film cutting machine, the small-volume AB glue semi-finished product is die-cut into the size of the product by using a die, thereby forming the AB glue finished product.
  • the present invention also discloses a manufacturing process of a flexible substrateless AB glue, in the second embodiment.
  • the process includes the following steps:
  • the temperature of the tunnel furnace is 40 ° C
  • the composition of the OCA optical glue 2 is acrylic resin
  • the adhesion of the OCA glue is 3000gf / 25mm
  • the adhesion of the silica gel layer 4 is 150gf / 25mm;
  • the coil product is slit into small rolls by a slitting machine, and then through the film cutting machine, the small-volume AB glue semi-finished product is die-cut into the size of the product by using a die, and the AB glue finished product is formed. .
  • the present invention also discloses a manufacturing process of a flexible substrateless AB glue, in the third embodiment.
  • the process includes the following steps:
  • the temperature of the tunnel furnace is 45 ° C
  • the composition of the OCA optical glue 2 is acrylic resin
  • the adhesion of the OCA glue is 2500gf / 25mm
  • the adhesion of the silica gel layer 4 is 80gf / 25mm;
  • the coil product is slit into small rolls by a slitting machine, and then through the film cutting machine, the small-volume AB glue semi-finished product is die-cut into the size of the product by using a die, and the AB glue finished product is formed. .
  • the present invention provides a flexible, substrate-free AB glue, which has no PET film structure,
  • the flexibility of AB glue is better, the sealing effect of the curved edge of the curved screen is increased, the transmittance is improved, and the curved screen is quickly exhausted after the bonding, and there is no bubble; in addition, the anti-fall of the 3D curved tempered glass is increased. Sex, reduce the risk of damage to the screen of the mobile phone.

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  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Laminated Bodies (AREA)
  • Telephone Set Structure (AREA)

Abstract

公开了一种柔性无基材的AB胶及其制作工艺，涉及光学膜技术领域；柔性无基材的AB胶包括重离型膜（5），所述重离型膜（5）具有上表面和下表面，重离型膜（5）的下表面用于与3D手机的屏幕相贴合；所述重离型膜（5）的上表面设置有硅胶层（4），且所述硅胶层（4）上贴合有OCA光学胶（2），所述OCA光学胶（2）用于与3D曲面钢化玻璃相贴合，所述OCA光学胶（2）上还贴合有轻离型膜（1）；该柔性无基材的AB胶增加了曲面屏贴合边缘的密封效果，提高了透过率，并且贴合后曲面屏排气快，不会存在气泡；另外，增加了3D曲面钢化玻璃的抗摔性，降低手机屏幕破损风险。

Description

一种柔性无基材的 AB胶及其制作工艺
[0001] 〖技术领域】
[0002] 本发明涉及光学膜技术领域， 更具体的说， 本发明涉及一种柔性无基材的 AB 胶及其制作工艺。
[0003] 〖背景技术】
[0004] 随着经济的快速增长， 目前， 3C行业发展非常迅速， 盖板从原来的亚克力 （P C板） 发展到现在的 3D玻璃或陶瓷或蓝宝石， 如今， 消费电子市场对新的产品审 美要求也是越来越高了， 手机、 平板、 相机均幵始采用曲面屏， 提升各自的产 品价值， 那么， 在这种曲面玻璃贴合的行业中必然少不了 AB胶贴合了。
[0005] 现有技术中的 AB胶在贴合 3D曲面手机或者其他曲面屏幕吋， 普遍存在着以下 的问题： 1、 多采用半贴合方式， 容易使曲面玻璃的边缘进入空气、 灰尘以及异 物， 影响 3D曲面钢化玻璃的外观； 2、 AB胶由于质地较硬， 未能覆盖到边缘弧 面， 收到撞击或碰伤吋， 边缘的玻璃碎澄会对人体造成伤害， 同吋边缘抗压强 度不高， 容易出现破裂。
[0006] 【发明内容】
[0007] 为了克服现有技术的不足， 本发明提供一种柔性无基材的 AB胶， 该柔性无基 材的 AB胶增加了与曲面屏贴合边缘密封效果， 同吋提高了玻璃强度。
[0008] 本发明解决其技术问题所采用的技术方案是： 一种柔性的无基材 AB胶， 其改 进之处在于， 包括重离型膜， 所述重离型膜具有上表面和下表面， 重离型膜的 下表面用于与 3D手机的屏幕相贴合；
[0009] 所述重离型膜的上表面设置有硅胶层， 且所述硅胶层上贴合有 OCA光学胶， 所 述 OCA光学胶用于与 3D曲面钢化玻璃相贴合， 所述 OCA光学胶上还贴合有轻离 型膜。
[0010] 在上述的结构中， 所述重离型膜的厚度为 50um-100um。
[0011] 在上述的结构中， 所述 OCA光学胶的厚度为 100um-200um。
[0012] 在上述的结构中， 所述硅胶层的厚度为 50um-200um。 [0013] 在上述的结构中， 所述轻离型膜的厚度为 30um-75um。
[0014] 本发明还提供了一种柔性的无基材的 AB胶制作工艺， 其改进之处在于， 包括 以下步骤：
[0015] A、 利用涂布机将 OCA光学胶涂布在硅胶层上， 再通过 UV光照隧道炉对半成 品进行照射， 照射吋间 10-20min， 以进行固化， 隧道炉的温度为 40°C-45°C;
[0016] B、 对硅胶层以及硅胶层上的 OCA光学胶分别进行覆膜， 其中 OCA光学胶覆轻 离型膜， 硅胶面覆重离型膜；
[0017] C、 覆膜完成后形成 AB胶半成品， AB胶半成品以卷对卷的方式进行作业， 作 业完成后， 形成不同宽度的卷材产品；
[0018] D、 将卷材产品通过分条机进行分切成小卷， 再通过膜切机， 利用刀模将小卷 的 AB胶半成品模切成产品的尺寸大小， 则形成了 AB胶成品。
[0019] 进一步的， 所述步骤 A中， UV光的照射吋间为 15min， 隧道炉的温度为 42.5°C
[0020] 进一步的， 所述 OCA光学胶的成分为丙烯酸树酯。
[0021] 进一步的， 所述步骤 A中， 所述 OCA胶水的粘力为 2000-3000gf/25mm， 所述硅 胶层的粘力为 10- 150gf/25mm。
[0022] 本发明的有益效果是： 本发明增加了曲面屏贴合边缘的密封效果， 提高了透过 率， 并且贴合后曲面屏排气快， 不会存在气泡； 另外， 增加了 3D曲面钢化玻璃 的抗摔性， 降低手机屏幕破损风险。
[0023] 【附图说明】
[0024] 图 1为本发明的一种柔性的无基材 AB胶的爆炸结构示意图。
[0025] 〖具体实施方式】
[0026] 下面结合附图和实施例对本发明进一步说明。
[0027] 以下将结合实施例和附图对本发明的构思、 具体结构及产生的技术效果进行清 楚、 完整地描述， 以充分地理解本发明的目的、 特征和效果。 显然， 所描述的 实施例只是本发明的一部分实施例， 而不是全部实施例， 基于本发明的实施例 ， 本领域的技术人员在不付出创造性劳动的前提下所获得的其他实施例， 均属 于本发明保护的范围。 另外， 专利中涉及到的所有联接 /连接关系， 并非单指构 件直接相接， 而是指可根据具体实施情况， 通过添加或减少联接辅件， 来组成 更优的联接结构。 本发明创造中的各个技术特征， 在不互相矛盾冲突的前提下 可以交互组合。
[0028] 参照图 1所示， 本发明揭示了一种柔性的无基材 AB胶， 通过该胶实现 3D曲面钢 化玻璃与 3D手机的屏幕的贴合， 实现对 3D手机的屏幕的保护。 具体的， 该柔性 的无基材 AB胶包括重离型膜 5， 所述重离型膜 5具有上表面和下表面， 重离型膜 5 的下表面用于与 3D手机的屏幕相贴合， 所述重离型膜 5的上表面设置有硅胶层 4 ， 且所述硅胶层 4上贴合有 OCA光学胶 2; 通过重离型膜 5的作用， 保护硅胶层 4 不受外界的影响， 是保护硅胶层 4的一层离型膜； 所述的硅胶层 4具有排气快透 过率高的特点， 易于贴合及返工。 所述的 OCA光学胶 2具有非常强的粘着性， 透 过率达到 90%以上， OCA光学胶 2用于与 3D曲面钢化玻璃紧密贴合， 方便排气， 使得 3D曲面钢化玻璃的整个面和 3D手机贴合， 达到 3D曲面钢化玻璃与 3D手机完 美贴合， 提高透过率， 提高玻璃强度。 另外， 所述 OCA光学胶 2上还贴合有轻离 型膜 1， 轻离型膜 1用来保护 OCA不受外界干扰， 是用来保护 OCA的一层保护膜 ， 在贴合过程中会撕掉。
[0029] 在本实施例中， 所述重离型膜 5的厚度为 50um; 所述 OCA光学胶 2的厚度为 100 urn; 所述硅胶层 4的厚度为 50um; 所述轻离型膜 1的厚度为 30um。 当然， 对于重 离型膜 5、 OCA光学胶 2、 硅胶层 4以及轻离型膜 1的厚度可以根据实际需求进行 选择， 或者其厚度在生产吋会有误差， 但并不影响本发明的 AB胶的构成与制作 ， 在另一具体的实施例中， 所述重离型膜 5的厚度为 70um; 所述 OCA光学胶 2的 厚度为 150um; 所述硅胶层 4的厚度为 lOOum; 所述轻离型膜 1的厚度为 45um。 较佳的， 重离型膜 5、 OCA光学胶 2、 硅胶层 4以及轻离型膜 1的厚度具有一定的 范围， 其中， 所述重离型膜 5的厚度为 50um-100Um; 所述 OCA光学胶 2的厚度为 100um-200um; 所述硅胶层 4的厚度为 50um-200um; 所述轻离型膜 1的厚度为 30u m-75um°
[0030] 本发明还揭示了一种柔性的无基材 AB胶的制作工艺， 在第一实施例中， 该工 艺包括以下的步骤：
[0031] A、 利用涂布机将 OCA光学胶 2涂布在硅胶层 4上， 再通过 UV光照隧道炉对半 成品进行照射， 照射吋间 15min， 以进行固化， 隧道炉的温度为 42.5°C; 其中， 所述 OCA光学胶 2的成分为丙烯酸树酯； 所述 OCA胶水的粘力为 2000gf/25mm， 所述硅胶层 4的粘力为 10gf/25mm;
[0032] B、 对硅胶层 4以及硅胶层 4上的 OCA光学胶 2分别进行覆膜， 其中 OCA光学胶 2 覆轻离型膜 1， 硅胶面覆重离型膜 5;
[0033] C、 覆膜完成后形成 AB胶半成品， AB胶半成品以卷对卷的方式进行作业， 作 业完成后， 形成不同宽度的卷材产品；
[0034] D、 将卷材产品通过分条机进行分切成小卷， 再通过膜切机， 利用刀模将小卷 的 AB胶半成品模切成产品的尺寸大小， 则形成了 AB胶成品。
[0035] 另外， 本发明还揭示了一种柔性的无基材 AB胶的制作工艺， 在第二实施例中
， 该工艺包括以下的步骤：
[0036] A、 利用涂布机将 OCA光学胶 2涂布在硅胶层 4上， 再通过 UV光照隧道炉对半 成品进行照射， 照射吋间 10min， 以进行固化， 隧道炉的温度为 40°C; 其中， 所 述 OCA光学胶 2的成分为丙烯酸树酯； 所述 OCA胶水的粘力为 3000gf/25mm， 所 述硅胶层 4的粘力为 150gf/25mm;
[0037] B、 对硅胶层 4以及硅胶层 4上的 OCA光学胶 2分别进行覆膜， 其中 OCA光学胶 2 覆轻离型膜 1， 硅胶面覆重离型膜 5;
[0038] C、 覆膜完成后形成 AB胶半成品， AB胶半成品以卷对卷的方式进行作业， 作 业完成后， 形成不同宽度的卷材产品；
[0039] D、 将卷材产品通过分条机进行分切成小卷， 再通过膜切机， 利用刀模将小卷 的 AB胶半成品模切成产品的尺寸大小， 则形成了 AB胶成品。
[0040] 另外， 本发明还揭示了一种柔性的无基材 AB胶的制作工艺， 在第三实施例中
， 该工艺包括以下的步骤：
[0041] A、 利用涂布机将 OCA光学胶 2涂布在硅胶层 4上， 再通过 UV光照隧道炉对半 成品进行照射， 照射吋间 20min， 以进行固化， 隧道炉的温度为 45°C; 其中， 所 述 OCA光学胶 2的成分为丙烯酸树酯； 所述 OCA胶水的粘力为 2500gf/25mm， 所 述硅胶层 4的粘力为 80gf/25mm;
[0042] B、 对硅胶层 4以及硅胶层 4上的 OCA光学胶 2分别进行覆膜， 其中 OCA光学胶 2 覆轻离型膜 1， 硅胶面覆重离型膜 5;
[0043] C、 覆膜完成后形成 AB胶半成品， AB胶半成品以卷对卷的方式进行作业， 作 业完成后， 形成不同宽度的卷材产品；
[0044] D、 将卷材产品通过分条机进行分切成小卷， 再通过膜切机， 利用刀模将小卷 的 AB胶半成品模切成产品的尺寸大小， 则形成了 AB胶成品。
[0045] 综上所述， 本发明提供了一种柔性的无基材 AB胶， 该 AB胶无 PET膜的结构，
AB胶的柔性更好， 增加了曲面屏贴合边缘的密封效果， 提高了透过率， 并且贴 合后曲面屏排气快， 不会存在气泡； 另外， 增加了 3D曲面钢化玻璃的抗摔性， 降低手机屏幕破损风险。
[0046] 以上是对本发明的较佳实施进行了具体说明， 但本发明创造并不限于所述实施 例， 熟悉本领域的技术人员在不违背本发明精神的前提下还可做出种种的等同 变形或替换， 这些等同的变形或替换均包含在本申请权利要求所限定的范围内 技术问题
问题的解决方案
发明的有益效果

Claims

权利要求书
[权利要求 1] 一种柔性的无基材 AB胶， 其特征在于， 包括重离型膜， 所述重离型 膜具有上表面和下表面， 重离型膜的下表面用于与 3D手机的屏幕相 贴合；
所述重离型膜的上表面设置有硅胶层， 且所述硅胶层上贴合有 OCA 光学胶， 所述 OCA光学胶用于与 3D曲面钢化玻璃相贴合， 所述 OCA 光学胶上还贴合有轻离型膜。
2、 根据权利要求 1所述的一种柔性的无基材 AB胶， 其特征在于： 所 述重离型膜的厚度为 50um-100um。
3、 根据权利要求 1所述的一种柔性的无基材 AB胶， 其特征在于： 所 述 OCA光学胶的厚度为 100um-200um。
4、 根据权利要求 1所述的一种柔性的无基材 AB胶， 其特征在于： 所 述硅胶层的厚度为 50um-200um。
5、 根据权利要求 1所述的一种柔性的无基材 AB胶， 其特征在于： 所 述轻离型膜的厚度为 30um-75um。
6、 一种柔性的无基材的 AB胶制作工艺， 其特征在于， 包括以下步骤
A、 利用涂布机将 OCA光学胶涂布在硅胶层上， 再通过 UV光照隧道 炉对半成品进行照射， 照射吋间 10-20min， 以进行固化， 隧道炉的温 度为 40°C-45°C;
B、 对硅胶层以及硅胶层上的 OCA光学胶分别进行覆膜， 其中 OCA光 学胶覆轻离型膜， 硅胶面覆重离型膜；
C、 覆膜完成后形成 AB胶半成品， AB胶半成品以卷对卷的方式进行 作业， 作业完成后， 形成不同宽度的卷材产品；
D、 将卷材产品通过分条机进行分切成小卷， 再通过膜切机， 利用刀 模将小卷的 AB胶半成品模切成产品的尺寸大小， 则形成了 AB胶成品
7、 根据权利要求 6所述的一种柔性无基材的 AB胶制作工艺， 其特征 在于： 所述步骤 A中， UV光的照射时间为 15min， 隧道炉的温度为 42. 5。C。
8、 根据权利要求 6所述的一种柔性无基材的 AB胶制作工艺， 其特征 在于： 所述 OCA光学胶的成分为丙烯酸树酯。
9、 根据权利要求 6所述的一种柔性无基材的 AB胶制作工艺， 其特征 在于： 所述步骤 A中， 所述 OCA胶水的粘力为 2000-3000gf/25mm， 所 述硅胶层的粘力为 10- 150gf/25mm。
PCT/CN2017/106578 2017-07-07 2017-10-17 一种柔性无基材的 ab 胶及其制作工艺 WO2019006909A1 (zh)

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