BOPP film capable of resisting crease and resisting cigarette packet deformation as well as preparation method thereof

Abstract

The invention provides a BOPP film capable of resisting crease and resisting cigarette packet deformation as well as a preparation method thereof. The BOPP film is prepared by directly coextruding andlaminating a three-layer structure of an upper surface layer, a core layer and a lower surface layer; the upper surface layer comprises the following components: a copolymer polypropylene, a slippingagent master batch and an anti-sticking agent master batch; the core layer comprises the following components: a homopolymer polypropylene, a stiffening agent master batch and an electrostatic agentmaster batch; and the lower surface layer comprises the following components: a copolymer polypropylene, a slipping agent master batch and an anti-sticking agent master batch. According to the productand the process, the technical problems of crease and cigarette packet deformation in soft packet cigarette film packaging.

Description

technical field [0001] The invention belongs to the field of film materials, and in particular relates to an anti-wrinkle and anti-cigarette package deformation BOPP film and a preparation method thereof. Background technique [0002] At present, there are two packaging forms of cigarettes at home and abroad: soft pack and hard box. In order to prevent the cigarettes from getting wet and prolong the shelf life of the product, the outer packaging film of the soft pack usually uses BOPP ordinary film or micro-shrinkage, while the hard box uses BOPP high-shrinkage membrane. With the development of my country's cigarette industry and the gradual increase in market competition, more and more attention has been paid to the appearance and packaging quality of cigarette packs, and the requirements are getting higher and higher, which puts forward higher requirements for the outer packaging film of cigarette packs. BOPP ordinary film is easy to wrinkle due to its poor heat resistanc...

AI Technical Summary

Problems solved by technology

[0003] At present, the cigarette box label paper of soft-pack cigarettes mainly uses single-sided coated paper, which is expensive, has excellent printing performance, high gloss, but poor stiffness, especially when the weight of the label paper is low, the cigarette box is easily shrinked by the outer package. The film is stretched and deformed, and when the conventional BOPP micro-shrink film is used to iron the container during operation, the film will shrink greatly and become unstable, and the film will stick to the cigarette box, resulting in slack and wrinkling, resulting in the package not being tightly adhered, uneven, and affecting Consumer's desire to buy

In 2016, the anti-wrinkle and anti-pack deformation BOPP cigarette packaging micro-shrink film developed by our company basically solved the above problems, but Wuhan Cigarette Factory used our existing micro-shrink film after using softer and thinner label paper in early 2017 Packaging, the packaging effect is better just off the assembly line, but after a week, it is found that occasionally some cigarette packets are slightly deformed, the packaging is not tight, uneven, and even the film is stuck to the cigarette box. In this regard, the cigarette factory does not change the label paper. The film factory is required to solve this problem, so it is imminent to improve the anti-wrinkle, anti-cigarette package deformation, micro-shrinkage and heat-resistant stability of BOPP cigarette packaging

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