Kunshan rubber forming, after large working pressure inhibition, due to the cohesion of the polyurethane elastomer can not be removed, in forming mold, usually resulting in extremely stable collection (shrinkage of vulcanized rubber, due to different types of rubber, however, there are differences), after a period of time is necessary to ease the smooth. Therefore, when the design of a rubber product at the beginning, no matter the secret recipe or abrasive, are carefully calculated and cooperate with each other, if not, it is very easy to cause the unstable specifications of handicrafts, leading to the quality of handicrafts depression.

Vulcanized rubber is a polyurethane elastomer of heat-soluble thermosetting plastics, while plastics belong to heat-soluble cold-setting. Vulcanized rubber because of sulfide type behavior subject is not the same, its forming dry solid temperature category, there are also very different, and even due to climate change, room temperature and humidity harm. Therefore, the production and manufacturing standards of vulcanized rubber products need to be adjusted appropriately anytime and anywhere, if not, it will cause the difference in the quality of crafts.

Rubber products are made of rubber raw materials to carry out the chamber machine made of mixed rubber as raw materials, in the process of rubber products according to the characteristics of the need to design a secret recipe, and set the necessary commodity strength. Commodity manufacturing and forming by vulcanized rubber flat vulcanizing machine to carry out pressing die forming. After commodity forming, the final development of the burr solution, the commodity metal surface treatment smooth without burr.

Rubber products high and low temperature test belongs to the high and low temperature test level, vulcanized rubber embrittlement refers to vulcanized rubber and crafts in the whole process of production, processing, storage and application, because of the comprehensive effect of internal and external factors caused by changes in the characteristics of the structure, so as to lose the value of goods. Basically show for craze, sticky, hard bottom change, become soft, take off layer, fade color, long mildew and so on.

Natural rubber NR

Natural Rubber is a polymer of isoprene made from latex collected from Rubber trees. Excellent wear resistance, high ductility, tensile compressive strength and elongation. It is easy to embrittlement in gas and become sticky when heated. It is easy to surge and melt in mineral oil or automobile gasoline. It is alkali resistant but not strong alkali resistant. Advantages: good ductility, corrosion resistance. Defect: not resistant to weather, not resistant to acid and alkali (edible oil) is the raw material for making rubber cloth, rubber hose, rubber boots, and is suitable for making shock absorbers parts, brake fluid in car, alcohol and other liquid with hydroxyl application crafts.

Styrene butadiene rubber SBR

Styrene Butadiene Copolymer is a Copolymer of Butadiene and Butadiene. Compared with natural rubber, it has symmetrical mass and less dirty stuff. It has better wear resistance and aging resistance, but poor impact toughness. Advantages: low cost non-oil-soluble material, excellent water-soluble resistance, excellent elasticity under 70 strength, weak expansion when high toughness, defects: not recommended to use strong alkali, active oxygen, raw oil, oil esters and human fat and most of the nitrogen oxides. It is widely used in tire industry, shoe shop, cloth industry and conveyor belt manufacturing industry.