High-frequency heat-sealing PETG heat-shrinkable label film surface layer additive and preparation method thereof, master batch and preparation method thereof, surface layer and heat-sealing method

Abstract

The invention discloses a surface layer additive for a high-frequency heat-sealing PETG (polyethylene terephthalate glycol) heat-shrinkable label film. The surface layer additive comprises pyrrole and a compound with counter-ion characteristics, the molar ratio of pyrrole to the compound with counter ion characteristic is 1: (1-2). The invention also provides a preparation method of the high-frequency heat-sealing PETG heat-shrinkable label film surface layer additive. The invention also provides a master batch prepared from the high-frequency heat-sealing PETG heat-shrinkable label film surface layer additive. The invention also provides a preparation method of the master batch prepared from the high-frequency heat-sealing PETG heat-shrinkable label film surface layer additive. The invention also provides a high-frequency heat-sealing PETG heat-shrinkable label film surface layer prepared from the master batch. The invention also provides a high-frequency heat-sealing method of a thin film prepared from the high-frequency heat-sealing PETG heat-shrinkable label film surface layer. According to the invention, pyrrole is doped with a compound with counter-ion characteristics to generate doped polypyrrole so as to increase the conductivity of polypyrrole. And under the condition of small-amount use, the dielectric requirements of high-speed heat-sealing polymers are met.

Description

technical field [0001] The invention relates to the field of PETG heat-shrinkable label films, in particular to a high-frequency heat-sealing PETG heat-shrinkable label film surface layer additive, a preparation method, a master batch, a preparation method, a surface layer and a heat-sealing method. Background technique [0002] PETG heat shrinkable label film is the base film of PETG shrink sleeve label. It makes the prepared label have exquisite patterns and brilliant colors through printing. With the 360° label design and body packaging effect, it gives the packaged goods an excellent publicity effect. . [0003] PETG heat shrinkable label film is a single-piece film made of PETG raw materials and related additives by casting and stretching. It needs to be printed, slit, and palmed together (bonded) to make a certain specification of cylindrical film roll. , can be used as a sleeve label. [0004] Among them, the gas palm is the process of applying the printed and cut s...

AI Technical Summary

Problems solved by technology

Due to the large difference in the properties of polypyrrole and PETG materials, polypyrrole can only be used as an additive in a small amount of PETG, otherwise it will cause large adverse changes in the thermal shrinkage performance, mechanical properties, optical properties, etc. of PETG, which will affect its shrinkage performance. label film use

However, when the amount is small, it has certain limitations on the electrical conductivity of polymer PETG, and cannot meet the requirements of polymer dielectric properties for high-speed heat sealing.

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