Low-cost low-temperature plastic dipping PVC glove forming process method

Abstract

The invention belongs to the field of high polymer materials, and especially relates to a low-cost low-temperature plastic dipping PVC glove forming process method. The low-temperature plastic dippingPVC glove forming process method uses chloro-ether resin and allyl resin monomers, low-temperature plastic dipping of PVC gloves is realized through in-situ polymerization and synchronous crosslinking, the preparation cost is low, a hand mold does not need to be preheated, high temperature production environment is not needed, energy consumption is low, the production working environment and conditions are improved, the prepared PVC gloves are more durable, good in sealing performance, free of peculiar smell, large in elasticity, resistant to acids and alkalis, convenient and comfortable to wear, integrally formed, non-sticky, convenient and safe, free of natural latex allergic protein and free of anaphylactic reaction, and the strength, the corrosion resistance and the hygienic propertyare improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, in particular to a low-cost low-temperature plastic dipping PVC glove forming process. Background technique [0002] The dipping method is used to manufacture products such as high boots, footwear, toys, water pump diaphragms, spark plug covers, hoses and screw sheaths, as well as rubber coverings and work gloves. Basically, this method involves dipping a positive mold into a fluid or diluted plastisol and then plasticizing the coating that adheres to the mold. Typical plastic dipping equipment is a conveyor line passing through a preheating oven, dipping station, plasticizing oven, cooling station and stripping station. A preheat oven is used to heat the molds prior to dipping. Although in some cases the mold is dipped at room temperature, it is generally preheated to control the thickness of plastisol that builds up on the mold. For most applications, the mold is heated prior to di...

AI Technical Summary

Problems solved by technology

For example, Chinese patents CN2016111918374, CN2018114717291, CN2019110194082, etc. all need to preheat the glove mold and the preheating temperature of the hand mold is generally controlled at 60~90℃, or even higher. The production of some PVC gloves has high temperature requirements, and the temperature in the workshop is relatively high. If you enter a workshop with a temperature of more than 20°C in winter, you need to take off the cotton clothing, and the temperature in the workshop in summer can reach above 50°C. Therefore, a large amount of energy is consumed, resulting in huge production costs, and due to the high temperature requirements, the glove molding process conditions are more complicated, and more defective products appear, and once the temperature drops, it will lead to dipping. For molding, the general baking temperature is 170~220°C

However, the decomposition temperature of polyvinyl chloride is low, and the high baking temperature creates the molding of PVC high-temperature dipped plastic gloves, but inevitable aging and degradation also occur during the high-temperature process.

Existing PVC dipped gloves use a large amount of plasticizer, and the strength is low, which is easy to cause stickiness and yellowing caused by plasticizer migration, which seriously affects the use. The thermal aging of PVC in the high temperature process leads to yellowing and holes in gloves, which seriously affect the molding of gloves