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Heat-sealing adhesive for polystyrene and preparation method of heat-sealing adhesive

A technology of polystyrene and adhesives, applied in the direction of ester copolymer adhesives, hydrocarbon copolymer adhesives, adhesive types, etc., can solve the problem of not being able to seal polystyrene materials, and achieve a wide range of The effect of heat-sealing temperature range, simple and easy preparation method, and high heat-sealing adhesive strength

Active Publication Date: 2013-04-17
JIANGSU ZHONGJIN MATAI MEDICINAL PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, polystyrene (PS) materials have been applied in many products, but traditional VC agents cannot seal polystyrene materials

Method used

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  • Heat-sealing adhesive for polystyrene and preparation method of heat-sealing adhesive
  • Heat-sealing adhesive for polystyrene and preparation method of heat-sealing adhesive
  • Heat-sealing adhesive for polystyrene and preparation method of heat-sealing adhesive

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Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] The concrete preparation method of above-mentioned heat-sealing adhesive for polystyrene, process steps are as follows:

[0030] (1) Put the mixed solvent into the reaction kettle with stirring and condensing reflux, and fully stir at the speed of 800-1000r / min;

[0031] (2) Keep stirring at a speed of 800-1000r / min, put vinyl chloride copolymer resin, styrene copolymer resin, and acrylate copolymer resin into the reactor in turn, and raise the temperature to 45-60°C, keep stirring for 2-2.5 hours;

[0032] (3) Cool and filter to obtain heat-sealing adhesive for polystyrene.

Embodiment 1

[0035] A heat-sealing adhesive for polystyrene, composed of ingredients according to the following mass:

[0036]

[0037] Add a mixed solvent of ethyl acetate, n-propyl acetate, and butanone into a three-necked flask with a capacity of 1 L and equipped with a heating mantle, a thermometer, a condenser, and a mechanical stirring device, and start stirring; while stirring, add vinyl chloride copolymer resin, Styrene copolymer resin and acrylate copolymer resin were heated up to 50° C. and kept for 2 hours; heating was stopped, cooled to room temperature while stirring, and filtered to obtain 750 g of heat-sealing adhesive for colorless transparent polystyrene.

[0038] The obtained polystyrene is coated with a heat-sealing adhesive on a 0.02mm hard aluminum foil and dried, and then heat-sealed with the polystyrene sheet on a heat-sealing device (heat-sealing conditions are 0.2MPa, 150°C, 1s), Its heat sealing strength was measured to reach 9.8N / 15mm.

Embodiment 2

[0040] A heat-sealing adhesive for polystyrene, composed of ingredients according to the following mass:

[0041]

[0042] Add a mixed solvent of ethyl acetate, n-propyl acetate and butanone into a 1-ton reaction kettle with heating, reflux condenser, and mechanical stirring, and start stirring; while stirring, add vinyl chloride copolymer resin, styrene Copolymer resin, acrylate copolymer resin, and raise the temperature to 50°C and keep it for 2 hours; stop heating, cool down while stirring, cool to room temperature, and filter to obtain 1000kg colorless transparent polystyrene heat-sealing adhesive.

[0043] The obtained heat-sealing adhesive for polystyrene is coated on a 0.02mm hard aluminum foil on an aluminum foil printing coating machine, dried and rolled, and heat-sealed with a polystyrene sheet of matching specifications on a blister packaging machine ( The heat sealing conditions of the packaging machine are 0.4MPa, 200°C, 0.7s), and the heat sealing strength is ...

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Abstract

The invention discloses a heat-sealing adhesive for polystyrene, which comprises the following components in percentage by weight: 10-25% of acrylate copolymer resin, 2-10% of vinyl chloride copolymer resin, 2-10% of styrene copolymer resin and 70-85% of a mixed solvent. According to the invention, an adhesive which can be in heat-sealing state with a polystyrene material is provided. The heat-sealing adhesive has high heat-sealing strength and a wide heat-sealing temperature range, indexes all meet the national drug packaging material standard; furthermore, the preparation method of the heat-sealing adhesive for polystyrene is simple and feasible. The heat-sealing adhesive is applicable not only in the hot-sealing adhering of a blister package, but also suitable for hot-sealing adhering of a polystyrene film and a polystyrene composite material.

Description

technical field [0001] The invention relates to a heat-sealing adhesive for food and medicine blister packaging, in particular to a heat-sealing adhesive for polystyrene, and also to a preparation method of the adhesive. Background technique [0002] Blister packaging is widely used and is the fastest growing flexible packaging material in recent years. In pharmaceutical packaging, it is formed by placing the medicine in a blister of a plastic hard sheet formed by blister, and then bonding and heat-sealing the plastic hard sheet with an aluminum foil coated with a heat-sealing adhesive. So that the medicines are safe and protected. [0003] At present, most of the materials used for blister packaging as blister substrates are polyvinyl chloride sheets; and the covering materials for blister packaging are basically aluminum foil, commonly known as PTP aluminum foil. The general structure of PTP aluminum foil is: protective layer / (printing layer) / aluminum foil layer / (printi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J133/12C09J127/06C09J125/08
Inventor 伏阳吴新上张红军陈强单宁张军周忠武何建忠徐根华
Owner JIANGSU ZHONGJIN MATAI MEDICINAL PACKAGING
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