A one-time molding die for an inverted paper cup structure

By designing a mold structure that allows for the separation of the top plate and the elastic extrusion component, the mechanical strength and cost issues of the paper cup inverted structure during the one-time molding process were solved, achieving efficient and damage-free inverted molding.

CN224426295UActive Publication Date: 2026-06-30FPI(ANHUI) ENVIRONMENTAL TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
FPI(ANHUI) ENVIRONMENTAL TECHNOLOGY CO LTD
Filing Date
2025-07-30
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing paper cup inverted structures suffer from poor mechanical strength during one-time molding or require multiple processes, leading to high costs. Furthermore, traditional mold designs are prone to damaging the product.

Method used

The mold structure consists of a separable top plate and an elastic extrusion component. The extrusion component forms an undercut convex surface when the mold is closed and returns to its normal state when the mold is opened to avoid interference. Soft silicone or flexible material is used as the extrusion component to achieve deformation and recovery.

Benefits of technology

It achieves efficient molding of the inverted paper cup structure, avoiding problems such as insufficient mechanical strength and high costs from multiple processes, while also preventing product damage during mold opening.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a one-time forming mold for an inverted paper cup structure, including an upper mold and a lower mold. The forming surface of the lower mold is provided with a forming concave surface for forming the inverted paper cup structure. The upper mold is characterized by having a top plate at its bottom, which is separable from the upper mold body. It also includes an extruder, one end of which is connected to the top plate, and the other end to the upper mold body. The extruder is elastic or flexible. This utility model uses a flexible or elastic extruder as the forming convex surface of the inverted structure. During mold closing, the upper mold body and the top plate compress the extruder to form the forming convex surface. During mold opening, the extruder is pulled back to its normal state. Under normal conditions, the extruder will not interfere with the formed product, and the inverted structure will not be damaged when the upper mold is subsequently removed.
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