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Processing process for continuous extrusion foaming of composite TPE (thermoplastic elastomer)

A technology of extrusion foaming and processing technology, applied in the field of foaming process equipment, can solve the problems of bulky and bulky TPE foaming equipment, high energy consumption, and many people, and achieve good plasticity, good continuity, and modifiable space. big effect

Inactive Publication Date: 2019-09-13
宁波邦泰汽车配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above technical problems, the present invention provides a composite TPE continuous extrusion foaming process to solve the problems of bulky and bulky TPE foaming equipment, high energy consumption, large number of employees and low production capacity

Method used

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Embodiment

[0015] The present invention provides a processing technology for continuous extrusion and foaming of composite TPE. TPE and AC foaming agent are blended and granulated by an internal mixer and an appropriate amount of nucleating agent, lubricant and antioxidant are added. The extruder is blended and extruded, the coat hanger die spreads into a sheet, and the calender is calendered to form;

[0016] The temperature of the extruder is set by the segmented process, which are: feeding temperature, initial melting temperature, melting and dispersing temperature, blowing agent decomposition temperature, TPE thickening film temperature;

[0017] The segment settings of the extruder are: steady pressure stage, pressure boosting stage and pressure reducing stage. The fact is that after TPE enters the extruder from the discharge port, the pressure gradually rises, and AC begins to decompose after reaching the highest theoretical value. The pressure further increases and exceeds the critical...

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Abstract

The invention provides a processing process for continuous extrusion foaming of a composite TPE (thermoplastic elastomer). The process comprises the following steps: carrying out commixing and pelletizing on a TPE and an AC (azodicarbonamide) foaming agent together with proper amounts of a nucleating agent, a lubricant and an antioxidant in an internal mixer, carrying out commixing extrusion by using an extruder, carrying out diffusion tabletting in a clothes hanger mode, and carrying out calendaring molding by using a calendaring machine. By adopting the process, the application range of a TPE foamed material can be widened, and because of good internal skinning, the material can be widely applied to garments, boxes, shoes, other fabrics or precise packaging, and the like. Aiming at the problems that a conventional TPE foamed material has no spreading property, the composite TPE is good in spreading property, aiming at the problem that a conventional TPE foamed or unfoamed material has no sliding resistance, the composite TPE is good in sliding resistance, and aiming at the problem that a common TPE foamed or unfoamed material has no sliding resistance in water, the composite TPEhas good sliding resistance in water.

Description

Technical field [0001] The invention belongs to the technical field of foaming process equipment, and in particular relates to a processing technology of composite TPE continuous extrusion foaming. Background technique [0002] Traditional TPE foaming generally uses molded foaming and cannot be continuously foamed. The products produced are all short-sheet materials and have poor resilience. Due to its technological limitations, it causes a large waste. Molded foaming is a traditional process for many years. The equipment is heavy and bulky, with high energy consumption, many people, and low productivity. The new process is completed by extrusion and foaming in one step, and obtains uniform, dense and continuous foamed coils. The width of the product can be adjusted within the width of the equipment, and the thickness and foaming ratio of the product can be adjusted arbitrarily within the scope of the equipment process. , The length of the product is unlimited. All the disadvan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/10B29C48/92C08L101/00
CPCB29C48/0011B29C48/0012B29C48/92C08J9/103C08J2201/03C08J2203/04C08J2300/26
Inventor 孙才根陈兴妹孙玲颖
Owner 宁波邦泰汽车配件有限公司
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