Degradable PLA (polylactic acid) coated paper cup forming mold

By combining components such as support cylinders and turntables, smooth demolding of PLA coated paper cups is achieved, solving the problems of easy tearing and deformation of paper cups in existing molds, and improving product qualification rate and production efficiency.

CN224116537UActive Publication Date: 2026-04-14JIANG SU SHAO NENG BO YING HUAN BAO KE JI YOU XIAN GONG SI
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Patent Information

Application Number
CN202520861929.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-06
Publication Date
2026-04-14
Estimated Expiration
2035-05-06

AI Technical Summary

Technical Problem

In the existing PLA coated paper cup molding process, the low elastic modulus and high coefficient of friction of PLA material make it difficult for the paper cup to be demolded smoothly, which can easily lead to local tearing or deformation and affect the product qualification rate.

Method used

It adopts a combination structure of support cylinder, turntable, separable mold, elastic pushing component, lifting component and separation component. The hydraulic cylinder drives the extrusion frame to achieve orderly linkage of locking release, mold separation and paper cup demolding, avoiding frictional obstruction.

Benefits of technology

It effectively reduces the risk of localized tearing and deformation of paper cups during the demolding process, improves the integrity and yield of demolding, simplifies the operation process, and improves work efficiency.

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Abstract

The utility model discloses a degradable PLA (polylactic acid) coated paper cup forming mold, and relates to the technical field of paper cup production. The device comprises a supporting cylinder, the top of the supporting cylinder is rotationally connected with a rotating disc, a plurality of separable molds are arranged at the top of the rotating disc, elastic pushing assemblies are arranged on the two sides of each separable mold, jacking assemblies are arranged at the bottoms of the separable molds, and locking assemblies are arranged at the pushing ends of the elastic pushing assemblies. According to the paper cup separating device, the separating assembly is driven, after the locking assembly unlocks the elastic pushing assembly, the elastic pushing assembly pulls the separable mold outwards and enables the separable mold to be separated, at the moment, a paper cup can be separated from the inner wall of the separable mold, then the jacking assembly jacks the paper cup upwards, and the paper cup can be separated from the inner wall of the separable mold. By means of the arrangement, when the paper cup is demoulded, friction force and obstruction from the inner wall of the separable mould can be avoided, and the risks of local tearing and deformation caused by uneven stress of the paper cup are effectively reduced.
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