TPE | TPR elastic vs soft glue PVC

Polyvinyl chloride, English abbreviation PVC (Polyvinyl chloride), is vinyl chloride monomer (VCM for short) in peroxide, azo compound and other initiators; or under the action of light and heat according to the mechanism of free radical polymerization reaction aggregated polymers. Vinyl chloride homopolymers and vinyl chloride copolymers are collectively referred to as vinyl chloride resins.

Advantages of PVC: soft PVC has good elasticity; excellent aging resistance, acid and alkali resistance; and the cost of PVC is relatively low; it can be quickly injection molded.

Disadvantages of PVC: it contains the toxic halogen element chlorine and has a strong smell; it may contain toxic plasticizers and heavy metals; it may release carcinogenic dioxins when burned; it is easy to become brittle at low temperature and has poor elasticity; it has permanent deformation.

The advantages of TPE|TPR: good elasticity; physical properties and hardness can be customized; good combination of two-color injection molding coating; low odor, no toxic plasticizers, heavy metals and other harmful substances, excellent environmental performance; good low temperature resistance.

Deficiencies of TPE|TPR: permanent deformation; heat resistance needs to be improved; general corrosion resistance and solvent resistance.

TPE|TPR replaces PVC Comments: Compared with PVC, TPE|TPR is more environmentally friendly, has better low temperature resistance, and is more suitable for two-color injection overmolding. However, in terms of acid and alkali resistance, PVC seems to be better. And for some hard materials, such as pipes, etc., they still belong to the PVC (PPR) market, and TPE is not competent.

In molding processing, most TPE|TPR materials have certain differences in shrinkage, fluidity and molding temperature from PVC. Before making molds for PVC products, when switching to TPE|TPR processing, the TPE|TPR material compounding system should be adjusted appropriately.

Common applications of TPE replacing PVC: wire and cable, sex toys, soft rubber toys (dolls, toy wheels), luggage accessories, bicycle motorcycle handle handles, sealing strips, sealing rings, etc.