A method of manufacturing an ear sleeve for a headphone

By using high-frequency hot melting and die-cutting processes, combined with the bonding of TPU, PETG and plastic parts, the problem of easily damaged ear tips for headphones has been solved, achieving an efficient and durable ear tip manufacturing method.

CN116074725BActive Publication Date: 2026-07-10DONGGUAN LEXING ELECTRONIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DONGGUAN LEXING ELECTRONIC CO LTD
Filing Date
2023-02-23
Publication Date
2026-07-10

AI Technical Summary

Technical Problem

The earcups of existing headphones are made of leather, which makes them prone to peeling, breakage, and natural wear, affecting their appearance and comfort. In addition, the manufacturing process is inefficient.

Method used

Employing high-frequency hot melt technology and die-cutting process, combined with the bonding of TPU, PETG and plastic parts, a durable and efficient ear cover manufacturing method is formed through multiple processes, including pressing TPU into the hole of the outer skin, stretching the skin, pressing PETG into the frog skin, sponge glue application, plastic part glue application, and edge binding.

Benefits of technology

It effectively prevents glue separation damage and natural wear, improves processing efficiency and quality, and ensures the durability and overall appearance quality of the ear tips.

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Abstract

The application relates to an ear cap manufacturing process of a headphone, which comprises the following steps: high-frequency completion of hole pressing TPU in a surface skin, then skin drawing, punching of an inner hole in the surface skin, frog skin pressing PTEG of the middle skin, punching of the shape and the inner hole of the frog skin, glue dispensing of a plastic part by a glue dispenser, glue brushing of the PTEG by a glue pot, adhesion of the PETG and the plastic part, pressure keeping of the plastic part and the surface skin, glue dispensing of the middle skin and the sponge, pasting of the sponge on the middle skin, bag turning and shaping of the surface skin, the middle skin and the sponge, glue dispensing of the plastic part and the PU skin edge by a glue dispenser, laser cutting of the excess surface skin to obtain the ear cap, edge covering of the ear cap by an edge covering machine, edge covering pressure keeping by an edge covering pressure keeping machine, oven shaping of the ear cap by a tunnel oven, appearance detection of the ear cap, and finally, case sealing and packaging, so that the processing process is simple, the processing efficiency and quality are high, and the ear cap can be effectively prevented from being damaged due to glue opening and natural abrasion.
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