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A kind of protective film that can be formed by thermocompression and preparation method thereof

A technology of thermoforming and protective film, applied in chemical instruments and methods, lamination, lamination devices, etc. Industrialized production, good exhaust, not easy to deform

Active Publication Date: 2017-07-28
NALI OPTICAL MATERIAL DONGGUAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the hot-pressed curved films on the market are ordinary three-layer hot-pressed films, and their performance is unstable. It is mainly manifested in poor molding after hot-pressing, low peeling force between the adhesive layer and the screen, and creep with time. produce edge

Method used

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  • A kind of protective film that can be formed by thermocompression and preparation method thereof
  • A kind of protective film that can be formed by thermocompression and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A method for preparing a thermocompression-formable protective film, comprising the following steps:

[0045] Preparing the upper PET layer 22 and the lower PET layer 24: stamping the PET base material to obtain the upper PET layer 22 and the lower PET layer 24 respectively;

[0046] Preparing the UV curable layer 21: coating the radiation curable material on the upper surface of the upper PET layer 22 with a micro-concave anilox roller, and the radiation curable material is cured by a UV light source to form the UV curable layer 21;

[0047] Preparation of the composite layer: coating the acrylic adhesive layer 23 on the lower surface of the upper PET layer 22, placing it in an oven to bake, and hot-pressing the upper surface of the lower PET layer 24 and the acrylic adhesive layer to obtain a composite layer;

[0048] Prepare the silica gel layer 25: apply the silica gel layer 25 on the lower surface of the lower PET layer 24, and bake the silica gel layer 25 in an ov...

Embodiment 2

[0070] Such as figure 1 Shown, the difference between this embodiment and embodiment 1 is:

[0071] In this embodiment, the radiation time of the UV curable layer 21 is 2min, the radiation temperature is 120°C, and the light intensity of the UV light source is 700mJ / cm 2 , the thickness of the UV hardened layer 21 is 2 μm, the light transmittance is 94%, the surface hardness is 5H, and the wear resistance is measured by using 0000# steel wool with a load of 2kg / 25mm, and no scratches are found after 10 times.

[0072] In this embodiment, the radiation-curable material for preparing the UV curable layer 2121 is UV-curable anti-pollution and easy-to-clean resin of the type UA-860 produced by Zhongshan Jieshida Fine Chemical Co., Ltd., and its viscosity is 1800cP / 25°C.

[0073] Further, in the step of preparing the upper PET layer 22 and the lower PET layer 24, the thickness of the upper PET layer 22 is 50 μm, and the thickness of the lower PET layer 24 is 38 μm.

[0074] Furth...

Embodiment 3

[0084] Such as figure 1 Shown, the difference between this embodiment and embodiment 1 is:

[0085] In this embodiment, the radiation time of the UV curable layer 21 is 5 minutes, the radiation temperature is 80° C., and the light intensity of the UV light source is 400 mJ / cm 2 , the thickness of the UV hardened layer 21 is 5 μm, the light transmittance is 94%, the surface hardness is 5H, and the wear resistance is measured by using 0000# steel wool with a load of 2kg / 25mm, and no scratches after 10 times.

[0086] In this embodiment, the radiation-curable material for the UV curable layer 2121 is UV-curable anti-pollution and easy-to-clean resin produced by Zhongshan Jieshida Fine Chemical Co., Ltd. with a viscosity of 1700 cP / 25° C., model UA-860.

[0087] Further, in the step of preparing the upper PET layer 22 and the lower PET layer 24, the thicknesses of the upper PET layer 22 and the lower PET layer 24 are both 44 μm.

[0088] Further, in the step of preparing the com...

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Abstract

The invention relates to the technical field of protective films, in particularly to a protective film capable of being formed by means of hot pressing and a preparation method thereof. The preparation method comprises the following steps that an upper PET layer and a lower PET layer are prepared; the upper surface of the upper PET layer is coated with radiation curing materials, and a UV hardened layer is formed after UV light source radiation curing is conducted; the lower surface of the upper PET layer is coated with an acrylic adhesive layer and placed in a drying oven to be baked, and the upper PET layer is compounded with the lower PET layer; the lower surface of the lower PET layer is coated with a silica gel layer and baked and cured in the drying oven, and a use layer is obtained; a stripping layer is attached to the silica gel layer; a film coating layer is attached to the upper surface of the UV hardened layer, the protective film is obtained, and the protective film can be formed through hot pressing after being cut through a film-cutting machine. The preparation method is simple, easy to carry out and suitable for industrial production, the prepared protective film is well attached to arc-shaped edges, and frilling is not prone to occurrence after attachment.

Description

technical field [0001] The invention relates to the technical field of protective films, in particular to a thermally pressable protective film and a preparation method thereof. Background technique [0002] At present, the edges of the fuselage and screen glass of many electronic products are designed to be curved, that is, the edge is curved on the basis of flat glass or a straight fuselage. The main purpose is to improve the overall visual effect of the screen and the fuselage. , while improving the feel. However, for the curved edge screen, the ordinary PET protective film or tempered glass curved edge part on the market cannot perfectly fit the screen or the body, and the curved edge part will be exposed after bonding, which is not easy to fit and will scratch hands when using And affect the visual effect. [0003] Molding is a special plastic processing method for processing thermoplastic sheets into various products. The sheet is clamped on the frame and heated to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/36B32B27/30B32B25/08B32B25/20B32B7/06B32B38/14B32B38/16B32B37/06B32B37/10B32B37/26B32B43/00
CPCB32B7/06B32B25/08B32B25/20B32B27/08B32B27/308B32B27/36B32B37/06B32B37/10B32B37/26B32B38/145B32B38/164B32B43/003B32B2037/268
Inventor 朱文峰
Owner NALI OPTICAL MATERIAL DONGGUAN
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