Polystyrene plastic sealing film and preparation method thereof

A polystyrene plastic and sealing film technology, applied in the field of composite films, can solve the problems of low cost, inability to PS heat sealing, low heat sealing strength, etc., and achieve the effects of low cost, high speed, and improved overall performance

Active Publication Date: 2022-02-08
金华市奇昇新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

PP is widely used in the field of packaging materials because of its plasticity, and its cost is low, but the heat sealing strength of PP film to PS plastic is low, and PS cannot be heat sealed

Method used

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  • Polystyrene plastic sealing film and preparation method thereof
  • Polystyrene plastic sealing film and preparation method thereof

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preparation example Construction

[0020] A preparation method of a polystyrene plastic sealing film, said sealing film comprises a printing layer and a heat-sealing layer arranged up and down, and its preparation method comprises the following steps:

[0021] (1) Material preparation: Prepare materials according to the following weight ratio. Component A includes: 30-60 parts of polyacrylate, 5-30 parts of propyl acetate, 10-60 parts of ethyl acetate, 0.1-0.5 parts of matte powder, wax powder 0.1~0.5 parts, 2~10 parts of methylcyclohexane, 3~8 parts of rosin, 1~3 parts of chlorinated polypropylene; component B includes: 10~50 parts of polyisocyanate, 20~70 parts of ethyl acetate.

[0022] (2) Mixing: Mix components A and B uniformly at a mass ratio of 15:0.1~15:0.8 to obtain oil, and reserve it; the spare oil must be used within 24 hours.

[0023] (3) Printing: the oil obtained in step (2) is used as printing ink, and printed on the surface of the printing layer by a gravure high-speed printing machine, and th...

Embodiment 1

[0036] (1) Preparation: Component A: Weigh 30 parts of polyacrylate, 30 parts of propyl acetate, 10 parts of ethyl acetate, 0.4 parts of matte powder, 0.2 parts of wax powder, 8 parts of methylcyclohexane, 5 parts of rosin 1 part, 1 part of chlorinated polypropylene, and then mix them uniformly for later use; component B: weigh 10 parts of polyisocyanate and 40 parts of ethyl acetate, and then mix them evenly for later use.

[0037] (2) Mixing: Mix components A and B uniformly at a mass ratio of 15:0.2 to obtain oil.

[0038] (3) Printing: use the oil obtained in step (2) as printing ink, and use a gravure high-speed printing machine to print on PP. The printing speed is 160 m / min. The printing plate roller is an electric engraving plate, and the plate depth is 38 μm. The temperature is 65~70°C. After printing, it can be cured for 24 hours in a drying room at 50°C.

[0039] It has been verified by experiments that the gloss (60°) of the parafilm obtained in this example is 90...

Embodiment 2

[0041] (1) Material preparation: Component A: Weigh 40 parts of polyacrylate, 10 parts of propyl acetate, 45 parts of ethyl acetate, 0.2 parts of matte powder, 0.3 parts of wax powder, 5 parts of methylcyclohexane, 3 parts of rosin and 2 parts of chlorinated polypropylene, and then mix them uniformly for later use; component B: weigh 15 parts of polyisocyanate and 50 parts of ethyl acetate, and then mix them evenly for later use.

[0042] (2) Mixing: Mix A and B components uniformly at a mass ratio of 15:0.1 to obtain oil.

[0043](3) Printing: use the oil obtained in step (2) as printing ink, and use a gravure high-speed printing machine to print on PP. The printing speed is 160 m / min. The printing plate roller is an electric engraving plate, and the plate depth is 45 μm. The temperature is 60~65°C. After printing, it can be cured for 24 hours in a drying room at 50°C.

[0044] It has been verified by experiments that the gloss (60°) of the parafilm obtained in this example ...

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Abstract

The invention discloses a polystyrene plastic sealing film and a preparation method thereof. The sealing film comprises a printing layer and a heat sealing layer which are arranged vertically, the preparation method comprises the following steps that materials are prepared according to the following weight ratio: a component A comprises, in parts by weight, 30-60 parts of polyacrylate, 5-30 parts of propyl acetate, 10-60 parts of ethyl acetate, 0.1-0.5 part of matt powder, 0.1-0.5 part of wax powder, 2-10 parts of methyl cyclohexane, 3-8 parts of rosin and 1-3 parts of chlorinated polypropylene; a component B comprises, in parts by weight, 10-50 parts of polyisocyanate and 20-70 parts of ethyl acetate; uniformly mixing the component A and the component B according to a mass ratio of 15: 0.1-15: 0.8 to obtain an oil material; and (3) adopting the oil material obtained in the step (2) as printing ink, printing on the surface of a printing layer by adopting a gravure high-speed printing machine, and curing after printing to obtain the polystyrene plastic sealing film. According to the method, the sealing strength of the sealing film can be properly adjusted, so that the prepared sealing film has good easy-to-tear property, the production cost is low, the preparation process is simple, and the sealing film has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of composite films, in particular to a polystyrene plastic sealing film and a preparation method thereof. Background technique [0002] Polystyrene (Polystyrene, PS) is a colorless and transparent thermoplastic. Compared with other plastics, it has the characteristics of high light transmission and surface gloss, easy to dye, high hardness, good rigidity, etc., and is water-resistant and chemical-resistant. Good performance. Therefore, PS as a packaging material is widely used in electronic appliances, transparent parts of public buildings, daily necessities, food and other fields. At present, the sealing film of PS packaging materials is mostly aluminum foil, aluminum-plastic composite material or aluminum-plated composite material. Although the barrier property is good, it is difficult to control the tearability and the cost is high. [0003] Chinese patent CN109291570A discloses a polystyrene plastic cu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/107C09D11/03C09D11/033B41M1/30
CPCC09D11/107C09D11/03C09D11/033B41M1/30
Inventor 聂荣邝毅刚吴锋景
Owner 金华市奇昇新材料有限公司
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