Plastic bottle cap master batch and preparation process thereof

Abstract

The invention discloses a plastic bottle cap master batch and a preparation process, and relates to a plastic master batch and a preparation process thereof, the plastic bottle cap master batch comprises 90-100 parts of a high density polyethylene master batch, 2-4 parts of a heat stabilizer, 2-3 parts of a flame retardant and 0.5-2 parts of a dispersant. The high-density polyethylene master batch prepared by polymerization reaction is used as a main body of the plastic bottle cap and has proper density, melt index, mechanical property and sanitation, and the heat stabilizer and the flame retardant are fully fused by adding the dispersing agent and the surface treating agent into the master batch raw materials, so that the heat resistance of the plastic bottle cap is improved, the produced plastic bottle cap is resistant to high temperature and does not deform in the high-temperature disinfection process, meanwhile, the tensile strength and the bending strength of the plastic bottle cap can be improved, and the raw material cost is reduced.

Description

technical field [0001] The invention relates to the technical field of plastic bottle caps, in particular to a plastic bottle cap masterbatch and a preparation process. Background technique [0002] Plastic bottle caps are widely used in the packaging of food and medicine, and are used with packaging bottles. Therefore, after the production of plastic bottle caps, they need to be sterilized by high temperature before they can be put into use. The general high temperature sterilization temperature is 121°C. However, the plastic bottle cap produced from the raw materials in the prior art is not resistant to high temperature, and is easily deformed in a high temperature environment, thereby affecting the sealing performance of the bottle cap and affecting the use. For this reason, we propose a kind of plastic bottle cap masterbatch and preparation technology. Contents of the invention [0003] The object of the present invention is to aim at the defects and deficiencies of t...

AI Technical Summary

Problems solved by technology

However, the raw materials in the prior art produce plastic bottle caps that are not resistant to high temperature and are easily deformed in a high temperature environment, thereby affecting the sealing performance of the bottle cap and affecting the use.

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