Smooth efficient anti-static master batch used by BOPP film and production process thereof

Abstract

The invention relates to a smooth efficient anti-static master batch used by a BOPP film and a production process thereof. The invention solves the problems that the official products of the smooth anti-static master batch are not produced in China in the prior art, the price of the similar imported products on the market is very high, the effective content of the master batch is low, and the overall cost of added antistatic agent and smoothing agent is higher. The technical scheme has the following essential points: the master batch is characterized by comprising the following components by weight part: 60 to 70 parts of polypropylene, 30 to 40 parts of anti-static agent and smoothing agent, wherein the combination ratio (by weight percent)of the anti-static agent and the smoothing agentis 23-28:5-12. The process characteristics are as follows: the anti-static agent, the smoothing agent and the polypropylene are extruded by a twin-screw extruder after being mixed, and the extrusion temperature is controlled between 215 DEG C and 225 DEG C, the current is controlled between 440mA and 460mA, the rotation speed is controlled between 420r / min and 430r / min, the pressure of an extruder head is controlled between 18MPa / h and 20MPa / h, and the melt temperature is controlled between 220 DEG C and 230 DEG C; and the melt is dried, cooled and pelletized after being extruded to form a master batch finished product.

Description

technical field [0001] The invention belongs to a functional additive for plastic films and a process thereof, and specifically refers to a high-efficiency antistatic smooth masterbatch and a production process thereof for the production of BOPP films (namely: biaxially oriented polypropylene films). Background technique [0002] BOPP film is a very important flexible packaging material. Due to its colorless, odorless, tasteless, non-toxic characteristics, high tensile strength, high impact strength, strong toughness, and excellent optical properties, it has a great reputation in the packaging field. It is widely used, and its market is also expanding. my country's current output of BOPP film reaches 2.5 million tons per year. From 2008 to the end of 2009, about 20 BOPP film production lines were put into production. In the future, the annual output of BOPP film will reach 3 million tons per year. However, during the processing or use of the BOPP film, due to the friction b...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the defects that there is no official product of antistatic slip masterbatch in China, the existing technology is backward, the price of similar imported products in the market is very high, the effective content of masterbatch is low, and the cost of adding antistatic agent and slip agent is generally high. , the purpose of the present invention is to provide an improved efficient antistatic smooth masterbatch for BOPP film and its production process, which can overcome the defects of the prior art