Production method and production equipment of PLA heat-resistant suction pipes

Abstract

The invention discloses a production method and production equipment of PLA heat-resistant suction pipes. The production method comprises the following steps: heating a PLA material until the PLA material is molten, and conveying the molten PLA material into a shaping pipe; introducing hot air into the shaping pipe, making the PLA material blown up in the shaping pipe through the hot air, and forming the PLA heat-resisting suction pipe after the PLA material is crystallized and shaped; and cooling the PLA heat-resistant suction pipe, and performing traction cutting on the cooled PLA heat-resistant suction pipe. According to the invention, the hot air is introduced into the shaping pipe, the hot air is utilized to blow up the PLA material in the shaping pipe, and the PLA heat-resistant suction pipe is formed after crystallization and shaping, so that the scheme that in the prior art, cold air is utilized to blow up and shape and then post-crystallization is carried out is changed, and the requirements of food contact safety and appearance quality can be met on the basis of simple process and better cost control.

Description

Technical field [0001] The present invention relates to the technical field of PLA materials, and more particularly to a method of producing a PLA heat resistant straw and its production equipment. Background technique [0002] Conventional PLA materials are not hot in the case of unscading, which is currently limited to low temperature straws below 55 ° C, but domestic consumption habits often use hot drinks, so there is a certain heat resistance requirement for pipetting (including milk tea tube, etc.). The production process and method and equipment of traditional PLA straws are not required. [0003] The existing PLA heat resistant straw tends to produce the following two methods: [0004] One solution is that PBS material is mainly (PBS itself heat resistant 90 ° C), with some PLA materials to assist in increasing product strength and hardness. Since the current domestic PBS or even some imported PBS models often do not meet the requirements in food contact migration test, s...

AI Technical Summary

Problems solved by technology

This solution uses fillers such as PBS, which are used in the field of contact with food, and often fail to meet the detection standards or produce peculiar smells during use, which affects the user experience and cannot meet the needs of use.

[0007] In addition, the Chinese patent application publication number CN 112521735 A discloses a PLA heat-resistant straw and its preparation method, which is prepared by thr

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