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1. (WO2018161381) METHOD FOR MANUFACTURING THREADLESS-SEWED WOVEN HAT USING ULTRASONIC SEWING TECHNOLOGY

Pub. No.:    WO/2018/161381    International Application No.:    PCT/CN2017/078467
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Wed Mar 29 01:59:59 CEST 2017
IPC: A42C 1/02
A42C 1/04
A42C 1/06
Applicants: QINGDAO QIANFENG CAPART INT' L CORP.
青岛前丰国际帽艺股份有限公司
Inventors: WANG, Aimei
王爱美
Title: METHOD FOR MANUFACTURING THREADLESS-SEWED WOVEN HAT USING ULTRASONIC SEWING TECHNOLOGY
Abstract:
A method for manufacturing a threadless-sewed woven hat using the ultrasonic sewing technology. Said method comprises the following operating steps: step one, cutting the raw material of a hat crown into multiple pieces, then bonding every two pieces by means of an ultrasonic sewing machine, and then processing the seam allowance using the tape hot-pressing and bonding technology; step two, producing a hat brim using the high-frequency hot pressing technology; step three, producing a sweatband by means of a one-time hot pressing technology; step four, bonding the hat crown, the hat brim and the sweatband by the ultrasonic sewing machine; and step five, fixing back buckles or other tail straps by rivets.