Shoe sole material
Among the varieties of styrene-based thermoplastic elastomers, SBS is mainly used in asphalt, plastic modification and shoe materials. SEBS is mainly used in medical supplies, adhesives, home appliances, automobiles and automated office equipment.
As a material for Chinese shoe-making enterprises, SBS has greater development advantages than rubber and PVC in terms of cost, processing and production technology and performance. SBS can be directly injected into soles or outsoles, and is widely used in the production of sports shoes, leather shoes, light and other casual shoes. The process of SBS shoemaking is generally: ingredients – mixing – granulation – molding. The ingredients are based on SBS, together with resin, softener, filler and additives. In the injection molding process and based on the main molding.
The basic framework of the formula of sole material is: main material + auxiliary material + filler + auxiliary agent.
Main material: the material that determines the main performance, not necessarily the material with the most content, SBS generally adopts the specification of oil-extended rubber
Excipients: It is used to adjust the hardness, fluidity, increase or modify the physical properties of the main materials, mainly naphthenic oil and styrene, K glue, etc.
Filler: It is mainly used to reduce the unit price, and also to improve the shrinkage of the finished product. Add subtle functions such as dimensional stability, such as calcium carbonate
Auxiliaries: special needs, trace addition, mainly foaming agent (H type, AC type), antioxidant release zinc stearate, flow aid alpha methyl styrene, etc., special attention should be paid to the relationship with the main ingredient system Compatibility and saturation type, risk of reaction and risk of precipitation.