Combined thermoplastic elastic body for automotive glass guide groove sealing strip and production method thereof

Abstract

The invention relates to a combined thermoplastic elastic body for an automotive glass guide groove sealing strip and a production method thereof. The combined thermoplastic elastic body comprises a thermoplastic elastic body A, a thermoplastic elastic body B and a thermoplastic elastic body C, wherein the thermoplastic elastic body A and the thermoplastic elastic body B are subjected to coextrusion lamination to form a linear sealing strip; the thermoplastic elastic body C and the linear sealing strip formed by the coextrusion lamination of the thermoplastic elastic bodies A and B are subjected to thermal injection molding adhesion to form an angular sealing strip through thermal injection molding; because the thermoplastic elastic body A has the characteristics of low friction coefficient and high abrasion resistance, the manufactured sealing strip is abrasion-resistant and has low abrasion to the glass; because the thermoplastic elastic body B has high elasticity, weather resistanceand sealing property and can carry out coextrusion lamination with the thermoplastic elastic body A, the manufactured sealing strip has high sealing property, strong anti-ageing performance and longservice life; and because the thermoplastic elastic body C has higher adhesive property and can form firm thermal injection molding adhesion with a coextrusion lamination product of the thermoplasticelastic bodies A and B, the sealing strip has the reliable performance.

Description

technical field [0001] The invention relates to a thermoplastic elastomer material, in particular to a composite thermoplastic elastomer used for automobile glass run groove sealing strips for automobile glass run groove sealing strips and a production method thereof. Background technique [0002] After retrieving the relevant patent documents, the combined thermoplastic elastomer used for the sealing strip of the glass run channel of the automobile and the production method thereof which are the same as the present invention have not been retrieved yet. Dynamically vulcanized thermoplastic elastomer (TPV) has been around since the 1970s. Its distinctive feature is that the rubber phase of elastomers such as ethylene-propylene rubber is cross-linked during screw mixing and extrusion, and is evenly dispersed in plastic phases such as polypropylene with fine particles. Among them, this type of thermoplastic elastomer can be processed by the processing method of thermoplastic p...

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Problems solved by technology

[0003] At present, domestic automobile sealing strips are generally made of ethylene-propylene-diene rubber (EPDM). With the strengthening of people's awareness of environmental protection and the introduction of relevant national energy-saving and emission-reduction policies, in view of the non-recyclable recycling of EPDM, the production of EPDM sealing strips Long process, high energy consumption, and some pollution to the environment, relevant experts are looking for new environmentally friendly materials to meet actual needs

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