Manufacturing method for eyelet and structure thereof
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United States of America Patent
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Apr 2, 2013
Grant Date -
Sep 14, 2006
app pub date -
Nov 3, 2005
filing date -
Dec 24, 2004
priority date (Note) -
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status (Latency Note)
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Abstract
The present invention discloses a method for manufacturing an eyelet for a tarpaulin, the eyelet having upper and lower eyelet bodies each provided with a plurality of fixing protrusions formed in a shape of concentric circles on one surface thereof in such a manner that the plurality of fixing protrusions formed on the upper eyelet body confront to the plurality of fixing protrusions formed on the lower eyelet body, the method comprising the following steps of: a step of positioning the upper and lower eyelet bodies by using a conveying means in such a manner as to place the tarpaulin there between; a step of punching a given position on the tarpaulin fabric by means of a punching machine with an integrally-formed ultrasonic horn; a step of conveying the upper and lower eyelet bodies to a position of the ultrasonic horn and fusing the upper and lower eyelet bodies to the tarpaulin through the compression of the ultrasonic horn; a step of fusing a protruded part extending upwardly from the circumference of a through-hole of the lower eyelet body by compression in the ultrasonic-fusing step to form an inner circumferential edge part; and a step of passing a rope through the through-hole of the eyelet mounted on the tarpaulin.
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