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Filling agglomerate for plastic film and its preparation method

A technology of plastic film and filling masterbatch, applied in the field of masterbatch and its preparation, can solve problems such as excessive drop in mechanical properties and cost reduction, and achieve the effects of small machine wear, cost reduction, and good processing flow performance.

Active Publication Date: 2007-05-23
SHANGHAI LINDA PLASTIC CHEM CO LTD
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the mechanical properties of the plastic film drop too much after using the filler masterbatch, and disclose a filler masterbatch for the plastic film, which can not only maintain the mechanical properties of the plastic film, but also greatly reduce the cost

Method used

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  • Filling agglomerate for plastic film and its preparation method

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Embodiment Construction

[0013] According to accompanying drawing, the selection of process circuit of the present invention:

[0014] There are mainly internal mixer method, reactor method and extruder granulation method to manufacture plastic masterbatch in the world today. According to the actual situation in China, the present invention selects twin-screw extruder granulation method. Its advantages are: easy processing, convenient management, high production efficiency, no pollution to the environment, etc.

[0015] The processing conditions of the filler masterbatch for plastic film of the present invention:

[0016] 1. Stirring mixer: heating range 0~200℃;

[0017] 2. Co-rotating twin-screw granulator; specification: φ75×36D

[0018] 1 heating

[0019] Screw speed: 5-120 rpm; granulator speed: 30-60 rpm; air-cooled hot cutting: it can be hot-cut on the mold surface, or can be drag-chain hot-cut, but not water-cooled and cut into pellets.

[0020]

[0021]

[002...

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Abstract

The invention involves a preparation method for masterbatch used in plastic film. The referred masterbatch includes: superfine CaCO3 25~70, superfine talc (SFT) powders 5~40, ethylene-vinyl acetate copolymer 17.5~25, oxidized polyethylene wax 1.5~6, ethyl silicone oil 4, and zinc stearate 1~5, wherein the average particle size of the superfine calcium carbonate is 5-10 micron, and the average size of SFT is 6-10 micron. The method comprises: adding CaCO3 and SFT into a stirring mixer, stirring till the temperature of the mixture at 100-130degreeC, adding oxidized polyethylene wax and stirring for 3~5 minutes, adding zinc stearate, ethyl silicone oil, ethylene-vinyl acetate copolymer respectively and stirring for 3 minutes to obtain a pre-mixture, placing the pre-mixture in a cocurrent twin-screw machine, granulating, cutting, cooling, and packaging to obtain the final product. The prepared masterbatch has good mechanical properties, dispersibility, and high economic nature.

Description

1. Technical field: [0001] The invention relates to a master batch and a preparation method thereof, in particular to a filling master batch for plastic film and a preparation method thereof. 2. Background technology: [0002] In China's plastic processing industry, the plastic packaging industry and the agricultural plastic industry are the industries with the largest output. Among them, various and varied plastic films such as packaging films, agricultural land films, and greenhouse films, whether blow-molded or tape-cast, and extended products of films, such as composite films and geocomposites, use a large amount of resin , mainly high-density polyethylene, low-density polyethylene and linear low-density polyethylene. [0003] In the context of rising oil prices, the price of resin has soared, but the price of products cannot be increased, which makes plastic processing enterprises fall into a very difficult situation. How to face the price increase of plastic raw mate...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L23/08C08K5/09C08L83/04C08K3/26C08K3/36
Inventor 王梓刚
Owner SHANGHAI LINDA PLASTIC CHEM CO LTD
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