Liquid sealing film for injection molding cup and film coated paper cup and preparation method of liquid sealing film

A technology for laminating paper cups and sealing films, which is applied in the field of injection-molded cups and liquid sealing films for laminating paper cups and their preparation. Low, good mechanical properties

Pending Publication Date: 2021-05-28
JIANGSU LEATER GREEN PACKAGING CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the processing technology and materials of the two cups are completely different, they are sealed by melting and sealing the cover film. It is impossible to use different sealing film...

Method used

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  • Liquid sealing film for injection molding cup and film coated paper cup and preparation method of liquid sealing film
  • Liquid sealing film for injection molding cup and film coated paper cup and preparation method of liquid sealing film

Examples

Experimental program
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preparation example Construction

[0034] The preparation method of the injection cup provided by the invention and the liquid sealing film of the coated paper cup comprises the following steps:

[0035] 1) Batching, mixing, and salivating the components of the heat-sealing layer to form a film to obtain the heat-sealing layer 5;

[0036] 2) After corona treatment, the heat-sealing layer 5 and the barrier layer 4 are heat-pressed and compounded and cured;

[0037] 3) Print an oil film on the surface of the semi-permeable super-pressure glassine paper, and perform oil-proof and waterproof treatment after drying to obtain the printing layer 3; or print the ink layer 2 on the surface of the frosted film 1, and obtain the printing layer 3 after drying;

[0038] 4) Compositing and curing the composite film obtained in step 2) and the printing layer 3 by hot pressing to obtain a semi-formed film;

[0039] 5) Use a glue applicator to apply glue on one side of the semi-film-formed heat-sealing layer to form a heat-sea...

Embodiment 1

[0042] The preparation method of injection molding cup and coated paper cup liquid sealing film comprises the following steps:

[0043] 1) By weight: 10 parts of high-density polyethylene, 12 parts of low-density polyethylene, 27 parts of linear low-density polyethylene, 7 parts of ethylene-methacrylic acid copolymer, 10 parts of ethylene-vinyl acetate copolymer, poly Add 15 parts of olefin plastomer to a high-speed mixer for stirring and mixing, and then salivate to form a film to obtain a heat-sealing layer;

[0044] 2) After corona treatment, the heat-sealing layer and the barrier layer (polyamide film) are hot-compressed and cured;

[0045] 3) Print an oil film on the surface of semi-permeable super-pressure glassine paper, and perform oil-proof and waterproof treatment after drying to obtain a printing layer;

[0046] 4) Compositing and curing the composite film obtained in step 2) and the printing layer by hot pressing;

[0047] 5) Slitting and packaging to obtain liquid...

Embodiment 2

[0049] The preparation method of injection molding cup and coated paper cup liquid sealing film comprises the following steps:

[0050] 1) By weight: 12 parts of high-density polyethylene, 8 parts of low-density polyethylene, 25 parts of linear low-density polyethylene, 6 parts of ethylene-methacrylic acid copolymer, 12 parts of ethylene-vinyl acetate copolymer, poly Add 12 parts of olefin plastomer into a high-speed mixer for stirring and mixing, and then salivate to form a film to obtain a heat-sealing layer;

[0051] 2) After corona treatment, the heat-sealing layer and the barrier layer (copolyester PETG film) are hot-compressed and cured;

[0052] 3) Print the ink layer on the surface of the frosted film, and obtain the printing layer after drying;

[0053] 4) Compositing and curing the composite film obtained in step 2) and the printing layer by hot pressing to obtain a semi-formed film;

[0054] 5) Use a glue applicator to coat food-grade hot melt adhesive on one side...

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PUM

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Abstract

The invention provides a liquid sealing film for an injection molding cup and a film coated paper cup. The liquid sealing film comprises a printing layer, a blocking layer and a heat sealing layer which are sequentially arranged from top to bottom and are fixed in a mutual co-extrusion manner, wherein the heat sealing layer is prepared from the following components in parts by weight: 10 to 20 parts of high-density polyethylene, 8 to 15 parts of low-density polyethylene, 25 to 30 parts of linear low-density polyethylene, 5 to 8 parts of ethylene-methacrylic acid copolymer, 8 to 12 parts of ethylene-vinyl acetate copolymer and 10 to 15 parts of polyolefin plastomer. When the sealing film is combined with cup openings of an injection molding cup and a film coated paper cup, the heat sealing matching performance is good, the combination strength is moderate, the easy-to-tear effect is good, puncture is easily achieved, and impact resistance is good. The sealing film disclosed by the invention can seal two materials, namely a PP injection molding cup and a PE film coated paper cup at the same time, and has certain sealing strength and a certain easy-to-uncover effect at the same time.

Description

technical field [0001] The invention belongs to the field of liquid sealing films, in particular to a liquid sealing film for injection cups and coated paper cups and a preparation method thereof. Background technique [0002] At present, milk tea has become a popular drink around us. It is different from the bitter and astringent coffee and is also different from the temporary pleasure of cola. Milk tea can be formed by matching various materials, the amount of added sugar, and the temperature. There are different tastes to meet the requirements of different groups of people. In recent years, the development of milk tea in the beverage industry can be described as a big explosion. Various types of milk tea are spread all over the streets, and each milk tea shop is innovative on the basis of tradition. They not only boldly try the taste, but also launch "milk cap" , "tea cover", "fruit tea" and other new products, and at the same time, innovative design on the outer packagi...

Claims

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Application Information

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IPC IPC(8): C09J7/29C09J7/35
CPCC09J7/29C09J7/35C09J2423/006C09J2423/046C09J2477/006C09J2467/006C09J2423/106
Inventor 顾成李斌斌
Owner JIANGSU LEATER GREEN PACKAGING CORP LTD
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