A multi-layer elastic composite film having functions of bending shape maintenance and impact resistance and a preparing method thereof

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

CN104608445AActive Publication Date: 2015-05-13NALI OPTICAL MATERIAL DONGGUAN
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2015-05-13

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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 invention relates to a protective film for display screens such as portable mobile terminals, in particular to a multi-layer elastic composite film with bending shape retention and impact resistance functions for curved glass edge display screens. Background technique

[0002] Touch screens can be seen everywhere in people's daily life, and more and more touch screen protective films are appearing around us. With the rapid popularization of smart mobile terminals such as smart phones and tablet PCs, various configurations of mobile phones and tablet PCs are available in the market. Among them, the release of iPhone 6 has attracted widespread attention to mobile phones with curved screens. Curved screen specifically means that the glass edge of the curved screen adopts a curved surface, while the screen is still a pure plane. For such a curved edge glass, the traditional non-full screen protective film cannot handle the arc corners, and can only be...

Examples

Embodiment Construction

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

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

[0033] Silicone, acrylic glue, OCA optical glue, PU glue, pressure sensitive glue, 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, and styrene-based thermoplastic elastomer were purchased from Shanghai Rizhisheng New Technology Development Co., Ltd.;

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