Polyvinyl chloride (PVC) trade mark producing process

Abstract

The invention provides a polyvinyl chloride (PVC) trade mark producing process. The process comprises the following steps of: performing die sinking according to the shape of a trade mark, wherein a producing mold comprises a mold surface plate and a mold bottom plate which are mutually folded to each other; dividing a prepared ingredient into surface layer liquid materials and bottom layer liquid materials, and adding various colorants to match colors of various surface layer liquid materials and bottom layer liquid materials respectively; dispensing the surface layer liquid materials in various corresponding colors to corresponding positions of the mold surface plate on which trade mark surface patterns are formed by using dispensing equipment; baking the mold on which the surface layer liquid materials are dispensed, and cooling after shell fabrics are baked; heating a backing material at a time; folding the mold bottom plate and the mold surface plate, and injecting the heated bottom layer liquid materials into the mold bottom plate through a perforated hole of the mold bottom plate; and baking the integral mold subjected to injection molding, and cooling. By the process, the liquid materials are utilized; the conventional step in which aids are required to be added and the conventional granulation step are eliminated; and simultaneously, the color stability and the secondary processing performance of products are improved.

Description

Technical field [0001] The invention belongs to the field of making trademarks, and specifically relates to a process for making and forming PVC trademarks. Background technique [0002] The existing various traditional trademarks are produced by high-pressure injection and high-pressure mold clamping of the PVC material after mixing and granulation by solid powder or granular methods. In the process of product processing, due to the injection of granular PVC materials, a large number of additives that increase fluidity and lubricity are added to meet the requirements of slipperiness to improve the color stability and secondary processability of the product, but the product is still prone to gas Defects that are difficult to solve such as lines, flow marks, shrinkage pits, and material leakage during injection. In this way, steel molds and high-pressure forming are required for production. Regardless of energy consumption and mold development costs, the cost is very large. Summ...

AI Technical Summary

Problems solved by technology

In the process of product processing, when the granular PVC material is injected, a large amount of fluidity and slippery additives are added to solve the demand for slipperiness, so as to improve the color stability and secondary processability of the product, but the product is still prone to gas. Streaks, flow marks, shrinkage pits, material leakage during injection and other difficult-to-solve defects

This method requires the use of steel molds and high-pressure forming to produce and manufacture. Regardless of energy consumption, mold development costs, etc., the cost expenditure is very large

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