Forming process suitable for thermoplasticity elastic body extrusion blow molding

Abstract

The invention discloses a forming process suitable for thermoplasticity elastic body extrusion blow molding, which comprises the following steps in sequence: drying a raw material A, cutting and smelting in the first extruding machine suitable for thermoplasticity elastic body extrusion, entering the blow molding die head and squeezing in the manner of center feed, cooling the bubble pipe obtained from blow molding through a one-way air-cooled process, then wrapping up and cutting to obtain thin film. The invention further discloses a forming process suitable for gluing material and thermoplasticity elastic body extrusion blow molding. Compared with the prior art, the forming process provided by the invention takes drying of the material, the squeezing processing technique and die head design into consideration and is suitable for the low permeable thermoplasticity elastic body extrusion blow molding and the extrusion blow molding of gluing material and thermoplasticity elastic body; and the thin film airtightness of the obtained blow molding thin film is good, the flat orientation is good, the thickness is uniform and the physical form is good.

Description

Technical field [0001] The present invention relates to a molding process suitable for extrusion blown films of thermal elastomers; more specifically, the present invention relates to a thermoplastic elastomer extrusion blown film with high air tightness, high planar orientation and high thickness uniformity The molding process and a molding process of co-extrusion blown film of an adhesive material and a thermoplastic elastomer belong to the technical field of rubber and plastic molding processing. Background technique [0002] The vacuum tires mainly used in automobile tires are composed of thick rubber layer, shoulders, sidewalls, beads, carcass, buffer layer, belt layer and inner liner. Among them, the inner liner, also known as the inner lining, mainly plays the role of preventing gas diffusion and maintaining tire pressure, and is a key material to ensure the safety of the car. The earliest use of the inner liner material is butyl rubber, which has basically been replaced ...

AI Technical Summary

Problems solved by technology

Although the main component of this thermoplastic elastomer is thermoplastic resin, due to a certain amount of rubber dispersed phase contained in it, this thermoplastic elastomer cannot be processed by the traditional plastic extrusion blow molding process; and the current general-purpose equipment shears Excessive force, severe frictional heat generation, not suitable for extrusion blow molding of low-permeability thermoplastic elastomer materials that are sensitive to temperature, have a very narrow processing temperature range, and are not resistant to shearing

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