A multi-layer elastic composite film with bending shape retention and impact resistance and its preparation method

A composite film, impact-resistant technology, applied in chemical instruments and methods, laminated, layered products, etc., can solve problems such as inability to handle arc corners, cumbersome film sticking process, easy to wear, etc., to overcome bending elasticity and Differential stress distribution among different substrates, good arc surface fit and shape retention ability, good elastic vibration absorption effect

CN104608445BActive Publication Date: 2017-01-11NALI OPTICAL MATERIAL DONGGUAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2017-01-11

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Abstract

The invention discloses a multi-layer elastic composite film having functions of bending shape maintenance and impact resistance and a preparing method thereof. The composite film has a function of cambered surface covering shape maintenance, a function of elastic vibration absorption and a function of resisting violent impact. The composite film comprises a film protecting layer, a using layer and a stripping layer from top to bottom. The film protecting layer is disposed on the using layer. The stripping layer is disposed under the using layer. The using layer comprises a UV coating, an uppermost transparent film, an upper adhesive coating, a first soft transparent film, a first adhesive coating, a second soft transparent film, a second adhesive coating, and a lowest soft transparent film from top to bottom. The composite film can be firmly adhered to a screen, is not liable to rebound, and has good cambered surface fitting and shape maintenance capability, thus achieving cambered surface edge covering.
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Description

Technical field

[0001] The present invention relates to a protective film for display screens such as portable mobile terminals. Specifically, it relates to a multi-layer elastic composite film with bending shape-keeping and impact resistance functions for curved glass edge display screens. Background technique

[0002] Touch screens can be seen everywhere in people's daily lives, and touch screen protective films are increasingly appearing around us. With the rapid popularization of smart mobile terminals such as smartphones and tablets, various types of mobile phones and tablets are on the market with various configurations. Among them, the release of iPhone6 ​​has attracted widespread attention to mobile phones with curved screens. A curved screen specifically refers to a curved screen with a curved glass edge, while the screen is still a pure flat surface. For such curved edge glass, traditional non-full-screen screen protectors cannot handle arc corners and can only be...

Examples

Embodiment Construction

[0031] In order to further understand the features, technical means, and specific objectives and functions achieved by the present invention, and analyze the advantages and spirit of the present invention, the present invention will be further explained through the following examples.

[0032] The raw materials used in the examples of the present invention are as follows:

[0033] Silicone, acrylic adhesive, OCA optical adhesive, PU adhesive, pressure sensitive adhesive, purchased from Dongguan Tianyi Chemical Co., Ltd.;

[0034] Polyethylene terephthalate, low density polyethylene, polypropylene film, polyvinyl chloride film, polycarbonate, purchased from Changxing (Guangzhou) Fine Coating Co., Ltd.;

[0035] Thermoplastic polyurethane, thermoplastic polyester elastomer, styrene thermoplastic elastomer, purchased from Shanghai Rizhisheng New Technology Development Co., Ltd.;

[0036] UV coating material: epoxy acrylate paint, purchased from Dongguan Tianyi Chemical Co., Ltd.

[0037] Mu...