Self-adhesive protective film and preparation method thereof

A self-adhesive protective film, sticky technology, applied in the direction of adhesives, film/sheet adhesives, etc., can solve the problems of unsuitability for large-scale application, cumbersome operation, etc., to achieve excellent peel strength stability, film flatness Good and simple operation effect

Inactive Publication Date: 2017-12-01
无锡市三力胶带有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, Chinese patent CN104527187 discloses a self-adhesive protective film and its preparation method, which is composed of an outer film, a middle film and an inner film, and the main raw materials of the outer film and the middle film are metallocene polyethylene, low density Polyethylene or linear low-density polyethylene, the main component of the inner film is Dow Chemical Elastomer, but it needs to ensure different temperatures in different material cavities during preparation, the operation is cumbersome, and it is not suitable for large-scale industrial applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A high-temperature-resistant self-adhesive protective film, including an adhesive layer, a core layer and an outer layer that are in contact with each other in sequence, and the specific raw material composition of each layer is as follows:

[0025] The raw material composition of the viscous layer is: MD6700 90wt%, PF9512 10%;

[0026] The raw material composition of the core layer is: PE 20wt%, PP 80wt%;

[0027] The raw material composition of the outer layer is: HDPE 20wt%, LDPE 80wt%.

[0028] The thickness of the adhesive layer is 5um, the thickness of the core layer is 42um, and the thickness of the outer layer is 8um.

[0029] The preparation method of above-mentioned self-adhesive protective film, comprises the following steps:

[0030] The raw materials of the viscous layer, the core layer and the outer layer are mixed uniformly according to the formula, and then sent to a three-layer co-extrusion blown film unit to extrude and blow the film, and cooled to o...

Embodiment 2

[0033] A high-temperature-resistant self-adhesive protective film, including an adhesive layer, a core layer and an outer layer that are in contact with each other in sequence, and the specific raw material composition of each layer is as follows:

[0034] The raw material composition of the viscous layer is: MD6741 70wt%, PF9512 30%;

[0035] The raw material composition of the core layer is: PE 90wt%, PP 10wt%;

[0036] The raw material composition of the outer layer is: HDPE 90wt%, LDPE 10wt%.

[0037] The thickness of the adhesive layer is 10um, the thickness of the core layer is 50um, and the thickness of the outer layer is 5um.

[0038] The preparation method of above-mentioned self-adhesive protective film, comprises the following steps:

[0039] The raw materials of the viscous layer, the core layer and the outer layer are mixed uniformly according to the formula, and then sent to a three-layer co-extrusion blown film unit to extrude and blow the film, and cooled to ...

Embodiment 3

[0042] A high-temperature-resistant self-adhesive protective film, including an adhesive layer, a core layer and an outer layer that are in contact with each other in sequence, and the specific raw material composition of each layer is as follows:

[0043] The raw material composition of the viscous layer is: MD6700 30wt%, MD6741 40wt%, PF9512 30%;

[0044] The raw material composition of the core layer is: PE 40wt%, PP 60wt%;

[0045] The raw material composition of the outer layer is: HDPE 20wt%, LDPE 70wt%, silicon dioxide 10wt%.

[0046] The thickness of the adhesive layer is 8um, the thickness of the core layer is 40um, and the thickness of the outer layer is 10um.

[0047] The preparation method of above-mentioned self-adhesive protective film, comprises the following steps:

[0048] The raw materials of the viscous layer, the core layer and the outer layer are mixed uniformly according to the formula, and then sent to a three-layer co-extrusion blown film unit to extr...

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PUM

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Abstract

The invention belongs to the technical field of high polymer materials and discloses a self-adhesive protective film and a preparation method thereof. The self-adhesive protective film comprises a viscous layer, a sandwich layer and an outer surface layer which are sequentially in contact with one another, wherein the viscous layer is a Kraton viscous copolymer layer; the sandwich layer comprises one or more of PE, PP or a PE-PP copolymer; and the outer surface layer comprises one or more of PP, HDPE, LDPE, LLDPE or an LDPE-HDPE copolymer. The self-adhesive protective film is wide in viscosity and stripping strength adjustment range, has stable viscosity on polar or non-polar surfaces, and shows very good stability under a high-temperature condition. The preparation method of the self-adhesive protective film comprises the following steps: uniformly mixing the raw materials of the viscous layer, the sandwich layer and the outer surface layer by weight ratio, then sending the obtained mixture to a three-layered coextrusion film-blowing unit for extrusion film-blowing, and performing cooling. The one-step coextrusion process is adopted, so that the operation is simple and easy, the running efficiency is high, the loss is small, and the product quality is good in stability.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a self-adhesive protective film and a preparation method thereof. Background technique [0002] Protective film can be divided into digital product protective film, car protective film, household protective film, food fresh-keeping protective film, etc. according to the purpose. It is widely used in various fields such as home furnishing, building materials, food, medicine, chemical industry, etc. , storage and transportation to achieve the purpose of protecting the product. [0003] At present, the protective film attached to the product is mostly achieved by coating the base layer of the protective film with glue. However, these glues usually contain organic solvents, which will produce pungent odors, and generally require secondary baking. Only processing can remove the organic solvent, so it causes an increase in cost and does not meet the requirements ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J153/02C09J123/06C09J7/02C08L23/12C08L23/06
CPCC09J153/025C08L23/06C08L23/12C08L2201/08C08L2203/16C08L2205/02C08L2205/025C08L2207/062C08L2207/066C09J2423/046C09J2423/106C09J2453/00
Inventor 张卫彪任晔萍
Owner 无锡市三力胶带有限公司
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