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A kind of preparation method of composite PET protective film
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A protective film and composite technology, which is applied in the field of composite PET protective film preparation, can solve the problems of shortened product life, low water absorption, non-tear resistance and anti-static, etc., to expand the application range and enhance the use The effect of longevity
Inactive Publication Date: 2016-05-18
河南省菲林克新型节能材料有限公司
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[0002] Polyethylene terephthalate (PET) is a highly crystalline polymer with excellent wear resistance, electrical insulation, flame retardancy, heat aging resistance and low water absorption, so , PET protective film with special protective properties is widely used in electronic products such as computers, digital cameras and mobile phones. The existing PET protective film is mainly made of a layer of release film and a layer of PET original film. After the original PET film is coated with glue, it is then laminated with a layer of PET release film. This PET protective film only has basic properties such as waterproof, wear-resistant and high-temperature resistance, and does not have other characteristics such as tear-proof and anti-static, which limits the PET film. The application range of the protective film shortens the service life of the product
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Embodiment 1
[0023] like figure 1 and figure 2 As shown, the preparation method of a composite PET protective film provided by the present invention comprises the following steps:
[0024] A. The PET material is placed in a punching machine for punching to obtain an unprinted PET layer.
[0025] B. Print the layer 2 on one surface of the unprinted PET layer to obtain the printed PET layer 1 .
[0026] C. Place the printed PET layer 1 in a dryer for baking, wherein the baking temperature is 70° C. and the baking time is 40 minutes.
[0027] D. Place the baked printed PET layer 1 in the molding production mold, then apply the liquid silica gel 3 on the layer 2 of the printed PET layer 1, and connect the printed PET layer 1 with the liquid silica gel 3 by hot pressing A composite protective film is obtained as a whole, wherein the temperature of hot pressing is 115°C and the pressure is 80kg / cm 2 , the time is 100 seconds.
[0028] E. Cool the composite protective film at room temperatu...
Embodiment 2
[0030] like figure 2 As shown, the preparation method of a composite PET protective film provided by the present invention comprises the following steps:
[0031] A. The PET material is placed in a punching machine for punching to obtain an unprinted PET layer.
[0032] B. Print the layer 2 on one surface of the unprinted PET layer to obtain the printed PET layer 1 .
[0033] C. Place the printed PET layer 1 in a dryer for baking, wherein the baking temperature is 70° C. and the baking time is 40 minutes.
[0034] D. Place the baked printed PET layer 1 in the molding production mold, replace the liquid silica gel with plastic, and then apply the plastic 3 on the layer 2 of the printed PET layer 1, and then print the PET layer 1 by thermocompression molding. The composite protective film is obtained by connecting with plastic 3 as a whole, wherein the temperature of hot pressing is 115°C and the pressure is 80kg / cm 2 , the time is 100 seconds, the plastic can be PVC film or...
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Abstract
The invention discloses a preparation method for a composite polyethylene terephthalate (PET) protection film. The preparation method comprises the following steps of: A. performing punch forming on a PET material to obtain a non-printed PET layer, B, printing a map layer on one surface of the non-printed PET layer to obtain a printed PET layer, C baking the printed PET layer, D. putting the baked printed PET layer into a die, then coating liquid silica gel onto the map layer of the printed PET layer, and integrally connecting the printed PET layer and the liquid silica gel by a hot press molding mode, and E. cooling a product at room temperature to obtain the finished composite PET protection film product, wherein the liquid silica gel can be replaced by plastic. By the method, the PET can be integrally connected with the liquid silica gel or the plastic with special performance to form the composite PET protection film, so that the application range of the PET protection film is expanded, and the service life of the product is prolonged.
Description
technical field [0001] The invention relates to the technical field of preparation methods of PET protective films, in particular to a preparation method of composite PET protective films. Background technique [0002] Polyethylene terephthalate (PET) is a highly crystalline polymer with excellent wear resistance, electrical insulation, flame retardancy, heat aging resistance and low water absorption. , The PET protective film with special protective properties is widely used in electronic products such as computers, digital cameras and mobile phones. The existing PET protective film is mainly made of a layer of release film and a layer of PET original film. After the PET original film is coated with glue, a layer of PET release film is attached. This PET protective film only has basic properties such as waterproof, wear-resistant and high-temperature resistance, but does not have other properties such as tear-proof and anti-static, which limits PET. The application range o...
Claims
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