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

A polystyrene and adhesive technology, used in ester copolymer adhesives, hydrocarbon copolymer adhesives, adhesive types, etc., can solve problems such as inability to seal polystyrene materials, and achieve a wide range of The effect of heat-sealing temperature range, high heat-sealing adhesive strength, and simple and easy preparation method

Active Publication Date: 2015-01-21
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 Patents(China)
IPC IPC(8): C09J133/12C09J127/06C09J125/08
Inventor 徐根华伏阳吴新上张红军单宁张军何建忠周忠武
Owner JIANGSU ZHONGJIN MATAI MEDICINAL PACKAGING
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