Environment-friendly plastic granulator for plastic processing

By combining a multi-stage dehydration process involving centrifugation, vacuum, nitrogen replacement, and constant temperature control, the problem of difficult moisture removal during the recycling of polyester biodegradable plastics has been solved, achieving deep dehydration and efficient recycling of the material.

CN122584542APending Publication Date: 2026-08-18ZIYANG XICHEN RENEWABLE RESOURCES RECYCLING CO LTD
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Patent Information

Application Number
CN202611064026.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-07-17
Publication Date
2026-08-18

AI Technical Summary

Technical Problem

Existing technologies are insufficient to effectively remove internal moisture from polyester biodegradable plastics during the recycling process, leading to broken molecular chains, decreased mechanical properties, and appearance defects, thus limiting their recycling.

Method used

The preliminary separation mechanism uses a combination of centrifugal force and airbag compression to achieve deep removal of moisture from the surface and interior of the material; the pulse separation mechanism uses vacuum and low dew point dry air in conjunction with constant temperature control to further improve the uniformity of drying; the auxiliary treatment mechanism uses nitrogen replacement and bubble removal during the melting stage to ensure that the material does not hydrolyze at high temperatures.

Benefits of technology

This technology enables deep dehydration of polyester biodegradable plastics, avoiding bubble defects during the hydrolysis and melting process at high temperatures, ensuring the mechanical properties and appearance quality of recycled materials, and broadening the application range of recycled materials.

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Abstract

The application relates to the technical field of plastic processing equipment, and discloses an environment-friendly plastic granulator for plastic processing, which comprises a bottom box, a treatment barrel for dehumidifying and processing recycled plastics is arranged at the top of the bottom box, a granulation main machine box is arranged on one side of the treatment barrel, and the recycled plastics after multiple treatments in the treatment barrel are subjected to granulation processing treatment; and a preliminary treatment mechanism is used for preliminarily dehumidifying and processing the recycled plastic raw materials after a cleaning process. By increasing and arranging an auxiliary treatment mechanism, the mechanism can not only replace the wet steam in the material pores by dry nitrogen during the pulse drying process, strengthen the removal effect of the internal pore water of thick-wall materials, and improve the defect that the outside is dry and the inside is wet in the traditional drying process, but also remove the combined water in the intermolecular gap of the melt by the nitrogen gas stripping effect during the melt granulation stage, further reduce the hydrolysis reaction probability in the melt state, and reduce the internal bubble defects of the melt.
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