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Protective film and preparation method thereof

A protective film, glucose technology, applied in film/sheet adhesives, amide/imide polymer adhesives, non-polymer adhesive additives, etc. Realize the problems of heavy workability, organic additives easily pollute the environment and the cost of production equipment, and achieve the effect of simple and convenient reworkability, saving substrate loss and low cost

Pending Publication Date: 2021-12-24
JIANGSU SIDIKE NEW MATERIALS SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a protective film and its preparation method, which aims to solve the problems in the prior art that the reworkability cannot be realized, the degradation cycle of the protective film is long, the environment is easily polluted by organic additives, and the cost of production equipment is high.

Method used

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  • Protective film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] First prepare the modified glucose emulsion, add acrylic acid copolymer and glucose to the mixed solution of emulsifier and deionized water after stirring evenly, and make a pre-emulsion after stirring evenly; mix and heat the deionized water, emulsifier and buffer After the temperature is stable, add part of the pre-emulsion to react. After the reaction, add the remaining pre-emulsion and initiator dropwise to continue the reaction; Between -8, add a thickener and an appropriate amount of defoamer and wetting agent to prepare a modified glucose emulsion;

[0028] Then, 100 parts by weight of modified glucose emulsion, 0.5 parts by weight of defoamer, 0.5 parts by weight of leveling agent, 0.5 parts by weight of curing agent, 0.1 parts by weight of preservative, and 10 parts by weight of deionized water are directly mixed by "one pot method". Stir evenly to prepare the adhesive. Select a 50 μm PET substrate layer, and apply an adhesive on the corona surface of the subs...

Embodiment 2

[0030] The difference from Example 1 is that the raw materials for the preparation of the adhesive are 100 parts by weight of modified glucose emulsion, 1.0 parts by weight of defoamer, 1.5 parts by weight of leveling agent, 3 parts by weight of curing agent, 0.3 parts by weight of preservative, 20 parts by weight of ionized water.

Embodiment 3

[0032] The difference from Example 1 is that the raw materials for the preparation of the adhesive are 100 parts by weight of modified glucose emulsion, 2.0 parts by weight of defoamer, 3.0 parts by weight of leveling agent, 6.0 parts by weight of curing agent, 0.6 parts by weight of preservative, 30 parts by weight of ionized water.

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Abstract

The invention discloses a protective film and a preparation method thereof. The protective film is mainly prepared by processing an adhesive prepared by mixing a modified glucose emulsion and an additive, the modified glucose emulsion is prepared by using glucose as a matrix and using acrylics and other monomer mixtures, and the modified glucose emulsion is prepared by using the modified glucose emulsion as the matrix and using the acrylics and other monomer mixtures. The performance of the prepared reworkable protective film product is equivalent to that of a solvent type protective film product, meanwhile, the emission of volatile organic solvents such as ethyl acetate and methylbenzene can be reduced, and the environment is protected; the reworking property in the production process is simple and convenient; the base material loss is reduced; in addition, when the protective film is abnormal in production, the adhesive surface can be directly washed, and the coated adhesive surface can be removed; after the film surface is dried, coating production can be carried out again; the process is simple, convenient to operate, green and energy-saving, and online reworking utilization is realized.

Description

technical field [0001] The invention relates to a protective film and a preparation method thereof, belonging to the technical field of protective film preparation. Background technique [0002] Protective film has now become a very important flexible packaging material, and is widely used in surface protection during product transportation and surface protection during manufacturing process; die-cutting protection, transfer and protection of various metals, films and tapes; Surface protection of optical glass processing; protection of various plastic casings, keyboards and other plastic parts. With the implementation of GB33372-2020 "Limits of Volatile Organic Compounds in Adhesives", the country has increasingly strict control over the content of volatile organic compounds in adhesives. The traditional coating industry has basically switched to water-based coatings. The adhesive industry is also developing in the direction of solvent-free adhesives such as water-based adh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/08C09J133/02C09J133/14C09J133/26C09J11/06C09J7/25C09J7/30
CPCC09J133/08C09J133/02C09J133/14C09J133/26C09J11/06C09J7/255C09J7/30C08K5/07
Inventor 金闯刘晓峰
Owner JIANGSU SIDIKE NEW MATERIALS SCI & TECH CO LTD