WO2020134458A1 - 玻璃软膜结构及其制作方法 - Google Patents

玻璃软膜结构及其制作方法 Download PDF

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Publication number
WO2020134458A1
WO2020134458A1 PCT/CN2019/113316 CN2019113316W WO2020134458A1 WO 2020134458 A1 WO2020134458 A1 WO 2020134458A1 CN 2019113316 W CN2019113316 W CN 2019113316W WO 2020134458 A1 WO2020134458 A1 WO 2020134458A1
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WIPO (PCT)
Prior art keywords
layer
glass
manufacturing
film structure
transfer
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PCT/CN2019/113316
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English (en)
French (fr)
Inventor
刘威
姜太明
陈吉
Original Assignee
瑞声声学科技(深圳)有限公司
瑞声科技(新加坡)有限公司
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Publication of WO2020134458A1 publication Critical patent/WO2020134458A1/zh

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    • 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
    • B32B7/06—Interconnection of layers permitting easy separation
    • 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
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • 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
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin 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
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/32—Layered products comprising a layer of synthetic resin comprising polyolefins
    • B32B27/325—Layered products comprising a layer of synthetic resin comprising polyolefins comprising polycycloolefins
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B32B37/025—Transfer laminating
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
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    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C3/00—Processes, not specifically provided for elsewhere, for producing ornamental structures
    • B44C3/02—Superimposing layers
    • 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
    • C09J7/10—Adhesives in the form of films or foils without carriers
    • 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
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/03—Covers
    • 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
    • B32B37/1207—Heat-activated adhesive
    • B32B2037/1215—Hot-melt adhesive
    • 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
    • B32B2255/10—Coating on the layer surface on synthetic resin layer or on natural or synthetic rubber layer
    • 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
    • B32B2255/20—Inorganic coating
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    • 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
    • B32B2255/20—Inorganic coating
    • B32B2255/205—Metallic coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
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    • B32B2307/70—Other properties
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    • B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
    • B32B2310/0806—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation
    • B32B2310/0831—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation using UV radiation
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    • 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
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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    • C09J2301/00—Additional features of adhesives in the form of films or foils
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    • 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
    • C09J2475/00—Presence of polyurethane
    • C09J2475/006—Presence of polyurethane in the substrate

Definitions

  • the invention relates to the technical field of electronic product accessories, in particular to a glass soft film structure and a manufacturing method thereof.
  • the industry usually sticks a layer of soft film on the glass cover plate to overcome the problem of brittleness and cracking of the glass, but because the glass cover plate has developed toward the bilateral curved surface or the surrounding curved surface, the existing soft film mostly uses PET-based The soft film of this structure cannot fit the glass cover plate bent at a large angle, wrinkles are likely to occur at the bend of the glass cover plate, and it cannot be fully fit in place at the edge of the glass cover plate, and it cannot be achieved Brushed transfer texture.
  • the technical problem to be solved by the present invention is to provide a glass soft film structure that can be attached to a glass cover plate bent at a large angle and can transfer texture, and a manufacturing method thereof.
  • the present invention provides a glass soft film structure
  • the glass soft film structure is a multi-layer structure, which includes a hot-melt adhesive layer, a substrate layer, a base coating layer, and a brush transfer arranged in this order Layer, optical coating layer, ink layer and explosion-proof adhesive layer.
  • the substrate layer is any one of a cycloolefin polymer film layer, a thermoplastic polyurethane layer, or a substrate-free optical adhesive layer.
  • the glass soft film structure is attached to the inner surface of the glass cover with a curved structure through the hot melt adhesive layer.
  • the invention also provides a method for manufacturing a glass soft film structure, which includes the following steps:
  • a brushed transfer machine is used to transfer texture on the surface of the basic coating to form a brushed transfer layer
  • Making an optical coating layer using a coating machine to perform optical coating on the surface of the drawing transfer layer to form an optical coating layer;
  • Making an ink layer using a screen printing machine to screen print a pattern on the surface of the optical coating layer to form an ink layer;
  • Making hot-melt adhesive layer peel off the release film layer, apply hot-melt adhesive on the surface of the base material layer with a wire drawing transfer machine or a hot-melt adhesive coating machine to form a hot-melt adhesive layer, and the glass is soft
  • the membrane structure is completed.
  • the substrate layer is any one of a cycloolefin polymer film layer, a thermoplastic polyurethane layer, or a substrate-free optical adhesive layer.
  • xylene sol is used to reduce the volatilization rate.
  • a surface of the base coating facing away from the substrate layer is also provided with a protective film, and the step of removing the protective film is further included before the step of making the brush transfer layer.
  • a UV light source is required for curing when making the brush transfer layer.
  • the glass soft film structure and the manufacturing method thereof provided by the present invention have the following beneficial effects:
  • the glass soft film structure can fit the glass cover plate bent at a large angle, and will not cause wrinkles at the bend of the glass cover plate, and the edge of the glass cover plate can also be fully fitted in place, improving the glass cover plate. safety;
  • the glass soft film structure can transfer texture to meet customers' appearance requirements for texture
  • Xylene sol is used when making the hot melt adhesive layer to reduce the volatilization rate and improve the product yield.
  • FIG. 1 is a schematic cross-sectional view of the glass soft film structure of the present invention.
  • FIG. 2 is a schematic flow chart of the manufacturing method of the glass soft film structure of the present invention.
  • FIG. 3 is a schematic view of the state after the completion of step S1 in the manufacturing method shown in FIG. 2;
  • step S2 is a schematic view of the state after the completion of step S2 in the manufacturing method shown in FIG. 2;
  • FIG. 5 is a schematic view of the state after the completion of step S3 in the manufacturing method shown in FIG. 2;
  • FIG. 6 is a schematic diagram of the state after the completion of step S4 in the manufacturing method shown in FIG. 2;
  • step S5 is a schematic diagram of the state after step S5 in the manufacturing method shown in FIG. 2 is completed.
  • the present invention provides a glass soft film structure 100, which includes a hot-melt adhesive layer 1, a substrate layer 2, a base coating layer 3, a brush transfer layer 4, an optical coating layer 5, which are sequentially stacked Ink layer 6 and explosion-proof adhesive layer 7.
  • the substrate layer 2 is any one of a cycloolefin polymer film layer, a thermoplastic polyurethane layer, or a substrate-free optical adhesive layer, replacing the traditional PET substrate layer (polyethylene terephthalate).
  • the glass soft film structure 100 adopting the above structure has optical properties, CMF processing performance and weather resistance comparable to PET film materials, and its glass transition point (about 136°C) is between the ring measurement temperature and the applicable temperature of ink and UV glue , So it has excellent tensile properties when it is close to the glass transition point, it can fit the glass cover that is bent at a large angle, it will not cause wrinkles at the bend of the glass cover, and it can be completely attached at the edge of the glass cover Closed in place, at the same time, the glass soft film structure 100 can also transfer the texture on the base coating 3 to form the brushed transfer layer 4 to meet the appearance requirements of customers on the texture.
  • the explosion-proof adhesive layer 7 of the glass flexible membrane structure 100 is attached to the inner surface of a glass cover plate (not shown) with a curved structure.
  • the glass cover plate is usually the back cover of a handheld electronic device.
  • the glass cover is a glass cover that is bent at a large angle to form a curved structure, which not only exerts the superiority of glass in touch and vision, but also overcomes the fragile defects of pure glass and improves the safety of the product.
  • the present invention does not specifically limit the thickness of each film layer of the glass flexible film structure 100, and the specific thickness of each film layer can be adjusted according to the thickness and color of the glass cover.
  • this embodiment provides a method for manufacturing the glass soft film structure 100, which specifically includes the following steps:
  • Step S1 providing the release film layer 20, the base material layer 2 and the base coating layer 3 that are sequentially stacked;
  • the composite layer structure composed of the release film layer 20, the base material layer 2 and the base coating layer 3 can be prepared in advance or can be purchased directly, wherein the base material layer 2 is a cycloolefin polymer film layer or Either of a thermoplastic polyurethane layer or a substrate-free optical adhesive layer, the surface of the base coating 3 facing away from the substrate layer 2 is usually provided with a protective film 30, as shown in FIG. 3.
  • Step S2 making a brush transfer layer 4: using a brush transfer machine to transfer texture on the surface of the base coating 3 to form a brush transfer layer 4, as shown in FIG. 4;
  • the protective film 30 on the surface of the base coating layer 3 needs to be peeled off.
  • a UV light source needs to be used for curing.
  • Step S3 Fabricating the optical coating layer 5: performing an optical coating on the surface of the drawing transfer layer 4 using a coating machine to form an optical coating layer 5, as shown in FIG. 5;
  • Step S4 making an ink layer 6: using a screen printing machine to screen print a pattern on the surface of the optical coating layer 5 to form an ink layer 6, as shown in FIG. 6;
  • Step S5 making an explosion-proof adhesive layer 7: spraying an explosion-proof adhesive on the surface of the ink layer 6 using a spraying machine to form an explosion-proof adhesive layer 7, as shown in FIG. 7;
  • Step S6 making a hot-melt adhesive layer 1: peeling off the release film layer 20, and applying hot-melt adhesive on the surface of the base material layer 2 using a wire drawing transfer machine or a hot-melt adhesive coating machine to form a hot-melt adhesive Layer 1, the glass soft film structure 100 is completed, as shown in FIG. 1.
  • step S6 toluene sol is usually used in the industry, which has a faster volatilization speed and fast coagulation, and needs to be sealed, heated and stirred.
  • xylene sol can be used to reduce the volatilization speed and improve the product yield.
  • the glass soft film structure and the manufacturing method thereof provided by the present invention have the following beneficial effects:
  • the glass soft film structure can fit the glass cover plate bent at a large angle, and will not cause wrinkles at the bend of the glass cover plate, and the edge of the glass cover plate can also be fully fitted in place, improving the glass cover plate. safety;
  • the glass soft film structure can transfer texture to meet customers' appearance requirements for texture
  • Xylene sol is used when making the hot melt adhesive layer to reduce the volatilization rate and improve the product yield.

Abstract

玻璃软膜结构及其制备方法，所述玻璃软膜结构为多层结构，其包括依次层叠设置的热熔胶层、基材层、基础涂层、拉丝转印层、光学镀膜层、油墨层和防爆胶层。该玻璃软膜结构可以贴合大角度折弯的玻璃盖板，在玻璃盖板的折弯处不会造成褶皱，玻璃盖板边缘处也能够完全贴合到位，提高了玻璃盖板的安全性，同时所述玻璃软膜结构还能够转印出纹理，满足客户对纹理的外观需求。

Description

玻璃软膜结构及其制作方法 技术领域
本发明涉及电子产品配件技术领域，尤其涉及一种玻璃软膜结构及其制作方法。
 背景技术
随着科技的发展和人们度办公和娱乐的即时需求，手持电子设备越来越受到人们的喜爱，如平板电脑、手机登手持电子设备。电子设备行业日新月异，从平面玻璃盖板发展到2.5D结构盖板，现在又从2.5D盖板发展成3D盖板，而且3D盖板由原先的双边曲面发展成四周曲面，玻璃盖板相较于塑料盖板，具有触感好和色泽美观的效果，但是存在易碎易裂的安全性等问题。目前，业界通常在玻璃盖板上贴合一层软膜以克服玻璃易碎易裂的问题，但是由于玻璃盖板已经向双边曲面或四周曲面的方向发展，而现有软膜多利用PET基材，这种结构的软膜不能贴合大角度折弯的玻璃盖板，在玻璃盖板的折弯处容易出现皱褶，在玻璃盖板的边缘处也无法完全贴合到位，而且无法实现拉丝转印纹理。
因此，有必要提供一种新型的玻璃软膜结构来解决上述问题。
 技术问题
本发明要解决的技术问题是提供一种可贴合于大角度弯折的玻璃盖板、且可转印纹理的玻璃软膜结构及其制作方法。
 技术解决方案
为解决上述技术问题，本发明提供了一种玻璃软膜结构，所述玻璃软膜结构为多层结构，其包括依次层叠设置的热熔胶层、基材层、基础涂层、拉丝转印层、光学镀膜层、油墨层和防爆胶层。
优选的，所述基材层为环烯烃聚合物薄膜层或热塑性聚氨酯层或无基材光学胶层中的任意一种。
优选的，所述玻璃软膜结构通过所述热熔胶层贴合于具有曲面结构的玻璃盖板的内表面。
本发明还提供一种玻璃软膜结构的制作方法，其包括以下步骤：
提供依次层叠设置的离型膜层、基材层和基础涂层；
制作拉丝转印层：利用拉丝转印机在所述基础涂层表面转印出纹理，形成拉丝转印层；
制作光学镀膜层：利用镀膜机在所述拉丝转印层表面进行光学镀膜，形成光学镀膜层；
制作油墨层：利用丝印机在所述光学镀膜层表面丝印图案，形成油墨层；
制作防爆胶层：利用喷涂机在所述油墨层表面喷涂防爆胶，形成防爆胶层；
制作热熔胶层：揭掉所述离型膜层，利用拉丝转印机或热熔胶涂布机在所述基材层表面涂覆热熔胶，形成热熔胶层，所述玻璃软膜结构制作完成。
优选的，所述基材层为环烯烃聚合物薄膜层或热塑性聚氨酯层或无基材光学胶层中的任意一种。
优选的，在制作热熔胶层中，采用二甲苯溶胶，降低挥发速率。
优选的，所述基础涂层背离所述基材层的表面还设有保护膜，所述制作拉丝转印层步骤之前还包括揭掉所述保护膜的步骤。
优选的，在制作拉丝转印层时，需使用UV光源固化。
 有益效果
与相关技术相比，本发明提供的玻璃软膜结构及其制作方法具有以下有益效果：
1、所述玻璃软膜结构可以贴合大角度折弯的玻璃盖板，在玻璃盖板的折弯处不会造成褶皱，玻璃盖板边缘处也能够完全贴合到位，提高玻璃盖板的安全性；
2、所述玻璃软膜结构能够转印出纹理，满足客户对纹理的外观需求；
3、热熔胶层的应用，使产品具有良好的通透感，达到质感丰富的效果；
4、制作热熔胶层时采用二甲苯溶胶，降低挥发速率，提高产品良率。
 附图说明
图1为本发明玻璃软膜结构的剖面示意图；
图2为本发明玻璃软膜结构的制作方法的流程示意图；
图3为图2所示制作方法中步骤S1完成后的状态示意图；
图4为图2所示制作方法中步骤S2完成后的状态示意图；
图5为图2所示制作方法中步骤S3完成后的状态示意图；
图6为图2所示制作方法中步骤S4完成后的状态示意图；
图7为图2所示制作方法中步骤S5完成后的状态示意图。
 本发明的实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本发明的一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
实施例1
请参阅图1，本发明提供了一种玻璃软膜结构100，其包括依次层叠设置的热熔胶层1、基材层2、基础涂层3、拉丝转印层4、光学镀膜层5、油墨层6和防爆胶层7。其中所述基材层2为环烯烃聚合物薄膜层或热塑性聚氨酯层或无基材光学胶层中的任意一种，取代传统的PET基材层（聚对苯二甲酸乙二酯）。采用上述结构的玻璃软膜结构100具有与PET膜材相当的光学性能、CMF加工性能和耐候性，其玻璃化转变点（大约136℃）介于环测温度和油墨、UV胶适用温度之间，因此在接近玻璃化转变点时具有优良的拉伸性能，能够贴合大角度折弯的玻璃盖板，在玻璃盖板的折弯处不会造成褶皱，玻璃盖板边缘处也能够完全贴合到位，同时所述玻璃软膜结构100还能在所述基础涂层3上转印出纹理，形成所述拉丝转印层4，满足客户对纹理的外观需求。
所述玻璃软膜结构100的防爆胶层7与具有曲面结构的玻璃盖板（图未示）的内表面相贴合，此处所述玻璃盖板通常为手持电子设备的后盖，所述玻璃盖板为大角度折弯形成曲面结构的玻璃盖板，既发挥了玻璃在触感和视觉上的优越性，又克服了纯玻璃易碎的缺陷，提高了产品的安全性。
需要说明的是，本发明对所述玻璃软膜结构100的各个膜层的厚度不做具体限定，各个膜层的具体厚度可根据玻璃盖板的厚度及颜色做出相应的调整。
实施例2
在实施例1的基础上，如图2所示，本实施例给出所述玻璃软膜结构100的制作方法，具体包括以下步骤：
步骤S1：提供依次层叠设置的离型膜层20、基材层2和基础涂层3；
所述离型膜层20、基材层2和基础涂层3组成的复合层结构可以是事先制作好的，也可以直接购买获得，其中所述基材层2为环烯烃聚合物薄膜层或热塑性聚氨酯层或无基材光学胶层中的任意一种，所述基础涂层3背离所述基材层2的表面通常还设有一层保护膜30，如图3所示。
步骤S2：制作拉丝转印层4：利用拉丝转印机在所述基础涂层3表面转印出纹理，形成拉丝转印层4，如图4所示；
在制作拉丝转印层4之前，需要先揭掉所述基础涂层3表面的保护膜30，在所述基础涂层3上转印出纹理时，需使用UV光源固化。
步骤S3：制作光学镀膜层5：利用镀膜机在所述拉丝转印层4表面进行光学镀膜，形成光学镀膜层5，如图5所示；
步骤S4：制作油墨层6：利用丝印机在所述光学镀膜层5表面丝印图案，形成油墨层6，如图6所示；
步骤S5：制作防爆胶层7：利用喷涂机在所述油墨层6表面喷涂防爆胶，形成防爆胶层7，如图7所示；
步骤S6：制作热熔胶层1：揭掉所述离型膜层20，利用拉丝转印机或热熔胶涂布机在所述基材层2表面涂覆热熔胶，形成热熔胶层1，所述玻璃软膜结构100制作完成，如图1所示。
在步骤S6中，行业内通常是采用甲苯溶胶，挥发速度较快，且凝结快，需密封加热搅拌，而本发明采用二甲苯溶胶，可以减低挥发速度，提高产品良率。
与相关技术相比，本发明提供的玻璃软膜结构及其制作方法具有以下有益效果：
1、所述玻璃软膜结构可以贴合大角度折弯的玻璃盖板，在玻璃盖板的折弯处不会造成褶皱，玻璃盖板边缘处也能够完全贴合到位，提高玻璃盖板的安全性；
2、所述玻璃软膜结构能够转印出纹理，满足客户对纹理的外观需求；
3、热熔胶层的应用，使产品具有良好的通透感，达到质感丰富的效果；
4、制作热熔胶层时采用二甲苯溶胶，降低挥发速率，提高产品良率。
以上所述的仅是本发明的实施方式，在此应当指出，对于本领域的普通技术人员来说，在不脱离本发明创造构思的前提下，还可以做出改进，但这些均属于本发明的保护范围。

Claims (8)

  1. 一种玻璃软膜结构，其特征在于，所述玻璃软膜结构为多层结构，其包括依次层叠设置的热熔胶层、基材层、基础涂层、拉丝转印层、光学镀膜层、油墨层和防爆胶层。
  2. 根据权利要求1所述的玻璃软膜结构，其特征在于，所述基材层为环烯烃聚合物薄膜层或热塑性聚氨酯层或无基材光学胶层中的任意一种。
  3. 根据权利要求1所述的玻璃软膜结构，其特征在于，所述玻璃软膜结构的防爆胶层与具有曲面结构的玻璃盖板的内表面相贴合。
  4. 一种如权利要求1所述的玻璃软膜结构的制作方法，其特征在于，所述制作方法包括以下步骤：
    提供依次层叠设置的离型膜层、基材层和基础涂层；
    制作拉丝转印层：利用拉丝转印机在所述基础涂层表面转印出纹理，形成拉丝转印层；
    制作光学镀膜层：利用镀膜机在所述拉丝转印层表面进行光学镀膜，形成光学镀膜层；
    制作油墨层：利用丝印机在所述光学镀膜层表面丝印图案，形成油墨层；
    制作防爆胶层：利用喷涂机在所述油墨层表面喷涂防爆胶，形成防爆胶层；
    制作热熔胶层：揭掉所述离型膜层，利用拉丝转印机或热熔胶涂布机在所述基材层表面涂覆热熔胶，形成热熔胶层，所述玻璃软膜结构制作完成。
  5. 根据权利要求4所述的制作方法，其特征在于，所述基材层为环烯烃聚合物薄膜层或热塑性聚氨酯层或无基材光学胶层中的任意一种。
  6. 根据权利要求4所述的制作方法，其特征在于，在制作热熔胶层中，采用二甲苯溶胶，降低挥发速率。
  7. 根据权利要求4所述的制作方法，其特征在于，所述基础涂层背离所述基材层的表面还设有保护膜，所述制作拉丝转印层步骤之前还包括揭掉所述保护膜的步骤。
  8. 根据权利要求4所述的制作方法，其特征在于，在制作拉丝转印层时，需使用UV光源固化。
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CN206297225U (zh) * 2016-10-31 2017-07-04 南昌欧菲光学技术有限公司 盖板玻璃层叠结构
CN107384235A (zh) * 2017-07-28 2017-11-24 宁波启合新材料科技有限公司 一种弧形玻璃保护膜及其制备方法
CN110028908A (zh) * 2018-12-25 2019-07-19 瑞声科技(新加坡)有限公司 玻璃软膜结构及其制作方法
CN110028909A (zh) * 2018-12-25 2019-07-19 瑞声科技(新加坡)有限公司 玻璃软膜结构及其制作方法

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