In TPE double-shot injection, it is commonly blended with hard materials, as well as metal and fabric. TPE double-shot injection with fabric is mainly used to produce luggage products, in particularly double-shot and dual-color injection on a plastic substrate. TPE can be bonded firmly with general purpose plastics such as PP, PS, HIPS, ABS and engineering plastics PC, PC/ABS, PA and their modified materials.
How to decide the hardness of TPE in double-shot injection?
The hardness of TPE in double-shot injection varies with different substrate materials and their physical properties. However, the hardness is usually decided according to customer needs.
The hardness of TPE is defined as the material’s anti-indentation force when subjected to a static load. Hardness is also related to other important physical properties, such as tensile modulus and bending modulus.
When choosing a TPE, the hardness of the material is often one of the first things to consider.
TPE can be used to produce standard products whose hardness ranges from Shore A0 (softest) to Shore A95 (hardest), and which possess ideal physical properties such as abrasion and scratch resistance, cohesiveness, melt flow index, etc. TPE can be used to yield different products to use in different applications.