Low-temperature heat-sealing non-paper packaging film for cigarettes in carton and manufacturing method thereof

Abstract

The invention relates to a low-temperature heat-sealing shrinkable packaging film for cigarettes. The packaging film comprises a surface layer A, a core layer B and a surface layer C. The surface layer A comprises, by weight, 70-80 parts of an ethene-butylene-propylene terpolymer, 2-10 parts of an ethene-butylene copolymer elastomer, 12-22 parts of a slipping agent, 3-13 parts of an antisticking agent and 0.5-1.5 parts of a wear-resisting agent, wherein the slipping agent is composed of Erucylamide and dimethicone; and the antisticking agent is composed of PMMA and silicon dioxide powder. The core layer B comprises, by weight, 65-80 parts of homo-polypropylene, 24-32 parts of stiffening master batch and 2-6 parts of antistatic master batch. The surface layer C comprises, by weight, 45-60 parts of an ethene-butylene-propylene terpolymer, 30-50 parts of an ethene-butylene copolymer elastomer, 2-5 parts of slipping agent and 3-10 parts of an antisticking agent, wherein the slipping agent is dimethicone; and the antisticking agent is PMMA. The three-layer co-extrusion packaging film has lower heat-sealing temperature, energy consumption is saved, and external packing quality of cigarettes in carton is raised.

Description

technical field [0001] The invention belongs to the technical field of packaging films, and in particular relates to an outer packaging film for cigarettes that realizes low temperature heat sealing and a manufacturing method thereof. Background technique [0002] At present, the heat-shrinkable cigarette film products produced by domestic cigarette film manufacturers must be heated during use to ensure the close adhesion of the cigarette case and the case. When using ordinary heat-shrinkable cigarette film to pack, there will be problems that the packaging is not close to each other, and there are wrinkles between the cigarette film and the cigarette case. Most cigarette factories solve this problem by adding ironing devices. The use of ironing devices makes the cigarette packs very close to a certain extent, but there are also obvious defects: [0003] ①The traditional ironing device only heats the upper and lower surfaces of the two cigarette boxes, and the contact part ...

AI Technical Summary

Problems solved by technology

[0003] ①Traditional ironing devices only heat the upper and lower surfaces of the two packs of cigarettes, and the contact parts between the two packs of cigarettes cannot be ironed, so that the two surfaces that are not heated are more wrinkled than the two surfaces that are heated obvious;

[0004] ②Scalding causes the surface of the film to be heated and frictional, thus damaging the smoothness of the film and causing scratches on the surface of the film;

[0005] ③When the hood is shut down, the long-term contact between the heating device and the film will cause excessive shrinkage and melting of the film, which will affect the packaging quality;

[0006] ④ The maintenance and adjustment of the ironing device will bring more workload and time, which will affect the operating rate and output;

[0007] ⑤ The use of the ironing device consumes energy, which increases the packaging cost

[0008] In order to avoid the above-mentioned defects of the ironing device, by improving the composition of the cigarette film, the cigarette film can realize self-shrinkage, thereby achieving the purpose of improving the packaging quality and beautifying the appearance of the cigarette package. The fly in the ointment is that the heat-sealing temperature of the existing packaging film is relatively high Generally at 110-115°C, too high a heat-sealing temperature not only increases energy consumption, but also has a certain impact on the cigarette case, and the applicable requirements for the material of the cigarette case are also more stringent

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