High-performance polypropylene extinction master batch and extinction film

Abstract

The invention discloses a high-performance polypropylene extinction master batch and an extinction film, and belongs to the technical field of extinction film production. The extinction master batch mainly comprises the following components in parts by weight: 10-30 parts of HDPE (High-Density Polyethylene), 10-25 parts of LLDPE (Linear Low-Density Polyethylene), at least 20 parts of an allyl elastomer, at most 50 parts of a polypropylene random copolymer, at most 2 parts of an antioxidant and at most 2 parts of a processing aid. A surface extinction layer of the extinction film is prepared from 100wt% of the extinction master batch, a core layer is prepared from HDPE (high-density polyethylene) with a melt index of 8-10g / 10min and LLDPE (linear low-density polyethylene) with a melt index of 2-4g / 10min, and an inner layer is prepared from LLDPE with a melt index of 2-4g / 10min. The extinction film prepared from the extinction master batch is high in haze, good in extinction effect, good in hand feeling, high in fineness and not prone to layering, and particularly not prone to layering after heat sealing.

Description

technical field [0001] The invention relates to a resin masterbatch and a resin film, in particular to a high-performance polypropylene matt masterbatch and a matt film, belonging to the technical field of matt film production. Background technique [0002] The matting film is generally composed of three layers. The surface layer is the matting layer, which is mainly prepared by using matting masterbatch or mixing other extruded resins with matting masterbatch; the core layer is made of polyethylene resin; the inner layer is also made of polyethylene resin. Mixed with some other additive masterbatch. Generally, polyethylene films are transparent and have a certain degree of gloss. However, with the improvement of people's living standards, matting films are used more and more in the field of packaging because of their unique vision. As the key raw material for the production of matt film, matting masterbatch can provide matting effect for the film. [0003] The matting mas...

AI Technical Summary

Problems solved by technology

[0003] The matting masterbatch is mainly formed in three ways. The first is to use the matting roller to artificially roll out a specific pattern on the glossy film to produce a matting effect; this method is more cumbersome and the process stability is poor, so it is now used less

The second is to add inorganic fillers to the resin matrix, and use most of the inorganic fillers to have low gloss and natural matting effect to make the masterbatch have a matting effect; although this method is simple, the specific gravity of the matting film is high due to the addition of inorganic fillers And the appearance is poor, giving people a very cheap feeling

But at this stage, only blown film polypropylene has mature products for polypropylene matting film, but the matting masterbatch of blown film polypropylene is not suitable for the production of CPE and BOPE matting film because of its low melt index (MFR); When polypropylene matting masterbatch is used in polypropylene matting film, there are cases where the core layer and matting layer are easy to delaminate, especially after heat sealing, and there are also problems such as rough matting surface

Images