Integrally-formed hollow-structure pike racket and preparation method thereof

By using an integrated hollow structure design and modified foaming materials, the problem of easy aging and delamination at the bonding interface of Peak rackets has been solved, thereby improving the structural integrity and durability of the rackets and enhancing their impact toughness and fatigue performance.

CN122032049APending Publication Date: 2026-05-15ADVANCED THERMOPLASTIC POLYMER TECH
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Patent Information

Application Number
CN202610175092.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-06
Publication Date
2026-05-15

AI Technical Summary

Technical Problem

The bonding interface between the faceplate and core material of existing Peak rackets is prone to stress concentration under long-term repeated impact loads and changes in environmental temperature and humidity, leading to aging, delamination, or even separation of the adhesive layer, which damages the structural integrity. Furthermore, the bonding process makes it difficult to ensure the consistency of performance for each racket.

Method used

The design adopts a one-piece hollow structure. The hollow cavity shell is prepared by blow molding, and the core layer is filled with modified foaming material. The shell and the core layer are chemically bonded to form a dense integral structure. The shell material is selected from polypropylene, polyethylene, polycarbonate, etc., and the modified hollow glass microspheres and polyurethane foam form a stable interface bond.

Benefits of technology

It completely eliminates the adhesive interface, improves the structural integrity and durability of the racket, enhances the compressive strength, impact toughness and fatigue resistance of the foam core layer, and reduces the vibration felt when hitting.

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Abstract

The invention relates to an integrally-formed hollow-structure Pick racket and a preparation method thereof, and belongs to the technical field of Pick rackets. The hollow cavity shell is filled with the foam core layer, an opening is formed in the hollow cavity shell, and the foam core layer is obtained by conducting heat treatment foaming on a foaming raw material; the method further comprises the following steps that an integrally-formed hollow cavity shell with an opening is obtained through a blow molding technology; the hollow cavity shell is filled with foaming raw materials; the filled hollow cavity shell is subjected to heat treatment, so that the foaming raw materials are foamed, expanded and fused in the shell, and a foam core layer tightly combined with the shell is formed; according to the Pick racket, an adhesive interface existing in a traditional spliced racket is structurally and thoroughly eliminated, the risk of adhesive failure and layering after long-term use or damp is fundamentally avoided, the structural integrity of the racket is greatly improved, and the durable life of the racket is greatly prolonged.
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