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PU protective film and production coating technology thereof

A protective film and coating technology, applied in the direction of coating, film/sheet adhesive, adhesive type, etc., can solve the problems of poor light transmission performance, weather resistance, white fog, etc.

Inactive Publication Date: 2019-05-03
江苏晶华新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The protective film currently on the market will produce undesirable phenomena such as white fog under high-temperature process conditions, and its light transmission performance and weather resistance are poor.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 101

[0038] The PU protective film of this embodiment comprises a single-sided release material whose release force is 50g / mm, and the release side is provided with a polyurethane adhesive layer, a PET layer and a polythiophene antistatic coating, wherein the polyurethane adhesive layer has a raw material component The main composition is, wt%, polyurethane: 85%; crosslinking agent: the balance; antistatic agent: 1%, the thickness of dry glue after coating is 8 μm; the thickness of PET substrate layer is 10 μm, and the transmittance is greater than 90% , the haze is less than 2%; the impedance value of the polythiophene antistatic coating is about 4×10^6.

[0039] The production process is as follows:

[0040] 1. Select the material. The PET base material needs to be corona treated on both sides, and the treatment degree on both sides should reach 42dyne or more.

[0041] 2. The drying temperature of the drying oven of the coating machine is set at 50-110°C, and the temperature ra...

Embodiment 102

[0051] The PU protective film of this embodiment comprises a single-sided release material whose release force is 60g / mm, and the release side is provided with a polyurethane adhesive layer, a PET layer and a polythiophene antistatic coating, wherein the polyurethane adhesive layer has a raw material component The main composition is, wt%, polyurethane: 86%; crosslinking agent: balance %; antistatic agent: 0.9%, the thickness of dry glue after coating is 9 μm; the thickness of PET substrate layer is 30 μm, and the transmittance is greater than 90 %, the haze is less than 2%; the impedance value of the polythiophene antistatic coating is about 2×10^6.

[0052] The production process is as follows:

[0053] 1. Select the material. The PET substrate needs to be corona treated on both sides, and the treatment degree on both sides must reach 42 or more.

[0054]2. The drying temperature of the coating machine oven is set at 50-110°C, and the temperature range from low to high duri...

Embodiment 103

[0064] The PU protective film of this embodiment comprises a single-sided release material whose release force is 70g / mm, and the release side is provided with a polyurethane adhesive layer, a PET layer and a polythiophene antistatic coating, wherein the polyurethane adhesive layer has a raw material component The main composition is, wt%, polyurethane: 87%; crosslinking agent: the balance; antistatic agent: 0.8%, the thickness of the dry glue after coating is 10 μm; the thickness of the PET substrate layer is 50 μm, and the transmittance is greater than 90% , the haze is less than 2%; the impedance value of the polythiophene antistatic coating is about 4×10^6.

[0065] The production process is as follows:

[0066] 1. Select the material. The PET substrate needs to be corona treated on both sides, and the treatment degree on both sides must reach 42 or more.

[0067] 2. The drying temperature of the coating machine oven is set at 50-110°C, and the temperature range from low ...

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Abstract

The invention discloses a PU protective film and a production coating technology thereof. The PU protective film least comprises a release layer, an adhesive layer, a substrate layer and an antistaticcoating, wherein the release layer is a single-sided release material; the substrate layer is used as a carrier and is used for providing protective properties; the adhesive layer is formed on at least a portion of the surface of one side of the substrate layer and is located between the release layer and the substrate layer; and the antistatic coating is at least a portion of the surface of theother side of the substrate layer relative to the adhesive layer. The protective film does not generate white fog under high temperature conditions, and has excellent weather resistance and excellentexhaust performance.

Description

technical field [0001] The invention relates to a PU protective film and its production and coating process, in particular to a PU protective film suitable for paper surfaces, latex paint walls, etc. and its production and coating process. Background technique [0002] According to the application, the protective film can be divided into digital product protective film, car protective film, household protective film, food fresh-keeping protective film and so on. With the popularization of digital products such as mobile phones in China, the protective film has gradually become a general term for screen protective films, and its functions in the field of screen protective films are also varied. The earliest high-definition scratch-resistant materials range from the earliest PP materials to Today's popular AR materials have experienced more than 5 years of development, and are gradually accepted by the majority of mobile phone groups. [0003] The protective film is divided i...

Claims

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Application Information

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IPC IPC(8): C09J7/25C09J175/04C08J7/04C08L67/02
Inventor 杨佳伟
Owner 江苏晶华新材料科技有限公司