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Protective film production process

A production process and technology of protective film, applied in film/sheet release coating, film/sheet adhesive, adhesive and other directions, can solve the problems of containing air bubbles, affecting the yield rate, reducing the scope of application, etc. The effect of eliminating air bubbles and improving ductility

Inactive Publication Date: 2021-07-13
ZHEJIANG HISEA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current silicone protective film is widely used due to its excellent anti-aging properties, but it lacks a certain degree of ductility, so its scope of application becomes smaller. In the production process of silicone protective film, it is necessary to use adhesives between various raw materials. Adhesion, and during the melting process of raw materials, it will cause air bubbles inside the raw materials, resulting in particles or tiny air bubbles in the finished product, which will affect the yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Its main technological process is as follows:

[0024] Add 9.0 kg of liquid silica gel, 5.0 kg of epoxy resin, 2.0 kg of dimethyl phthalate, 1.0 kg of titanate coupling agent and 2.0 kg of silicone oil into the reactor to control the temperature inside the reactor at 30 degrees Celsius. Under the environment of 0.6 atmospheric pressure, stir for 25 minutes to obtain mixed raw material A; process the seamless melt adhesive film in an environment of 120 degrees Celsius, and then coat the surface of the seamless melt adhesive film with an 80-mesh filter. Raw rubber, the coating thickness is controlled at 2 wires; the mixed raw material A is evenly coated on the seamless melt adhesive film treated with the original rubber, and the coating thickness is controlled at 5 wires; the melt adhesive film coated with the mixed raw material A is Carry out preliminary curing under ultraviolet light for 2 minutes, then dry it with drying equipment for 10 minutes, and obtain preform B a...

Embodiment 2

[0026] Its main technological process is as follows:

[0027] Add 9.1 kg of liquid silica gel, 4.5 kg of epoxy resin, 1.5 kg of dimethyl phthalate, 1.0 kg of titanate coupling agent and 1.0 kg of silicone oil into the reactor to control the temperature inside the reactor at 30 degrees Celsius. Under the environment of 0.6 atmospheric pressure, stir for 20 minutes to obtain mixed raw material A; process the seamless melt adhesive film in an environment of 120 degrees Celsius, and then coat the surface of the seamless melt adhesive film with an 80-mesh filter. Raw rubber, the coating thickness is controlled at 2 wires; the mixed raw material A is evenly coated on the seamless melt adhesive film treated with the original rubber, and the coating thickness is controlled at 5 wires; the melt adhesive film coated with the mixed raw material A is Carry out preliminary curing under ultraviolet light for 2 minutes, then dry it with drying equipment for 10 minutes, and obtain preform B a...

Embodiment 3

[0029] Its main technological process is as follows:

[0030] Add 8.9 kg of liquid silica gel, 4.6 kg of epoxy resin, 1.8 kg of dimethyl phthalate, 1.0 kg of titanate coupling agent and 1.6 kg of silicone oil into the reactor to control the temperature inside the reactor at 30 degrees Celsius. Under the environment of 0.7 atmospheric pressure, stir for 25 minutes to obtain mixed raw material A; process the seamless melt adhesive film in an environment of 120 degrees Celsius, and then coat the surface of the seamless melt adhesive film with an 80-mesh filter. Raw rubber, the coating thickness is controlled at 2 wires; the mixed raw material A is evenly coated on the seamless melt adhesive film treated with the original rubber, and the coating thickness is controlled at 5 wires; the melt adhesive film coated with the mixed raw material A is Carry out preliminary curing under ultraviolet light for 2 minutes, then dry it with drying equipment for 10 minutes, and obtain preform B a...

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Abstract

The invention discloses a protective film production process, and relates to the technical field of polymer protective films. The protective film production process mainly comprises the following steps: 1, respectively adding liquid silica gel, epoxy resin, dimethyl phthalate, a coupling agent and silicone oil into a reaction kettle, and stirring in a negative pressure environment with the temperature controlled to be 30-35 DEG C to obtain a mixed raw material A; 2, treating the seamless melt adhesive film in an environment at 120-150 DEG C, and then coating the surface of the seamless melt adhesive film with a layer of raw adhesive filtered by a filter screen; and step 3, uniformly coating the mixed raw material A on the seamless melt adhesive film treated by the raw adhesive, wherein the coating thickness is controlled to be 4-8 threads. The ductility of the whole prepared protective film is improved by adding the plasticizer dimethyl phthalate into the raw materials of the production process of the protective film, and the internal stress of the protective film is eliminated by performing stress elimination treatment on a finished product for a period of time by using a drying oven after the finished product of the protective film is produced.

Description

technical field [0001] The invention relates to the technical field of polymer protective films, in particular to a production process of the protective film. Background technique [0002] Polymer protective film is used in electronics, machinery, medical and other fields. Protective film has gradually become a general term for screen protective film, and its function in the field of protective film is also constantly innovating. The material is from the earliest PP material Up to now, the performance of composite silica gel has been gradually improved in various aspects, and the protective film of different raw materials has different production processes. [0003] The current silicone protective film is widely used due to its excellent anti-aging properties, but it lacks a certain degree of ductility, so its scope of application becomes smaller. In the production process of silicone protective film, it is necessary to use adhesives between various raw materials. Bonding, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/50C08L83/04C08L63/00C08K5/12
CPCC09J7/25C09J7/50C08L83/04C08L2205/025C08L2205/03C09J2483/006C09J2463/006C08L63/00C08K5/12
Inventor 赵小华
Owner ZHEJIANG HISEA TECH CO LTD
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