Method of manufacturing slide fastener chain bearing patterns
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United States of America Patent
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Jun 4, 1991
Grant Date -
N/A
app pub date -
Aug 20, 1990
filing date -
Aug 23, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In manufacturing a slide fastener chain, (a) two series of alignment markers are applied to the continuous fastener tapes at intervals longitudinally thereof with their respective patterns matched with each other; (b) the opposed continuous fastener tapes are fed in side-by-side toward an element-attaching station; (c) the corresponding alignment markers are detected during the feed of the opposed continous fastener tapes; (d) the feeds of the opposed fastener tapes are controlled in such a way that the fastener tapes are allowed to continue feeding if the corresponding alignment markers prove to be in registry with each other, or the feed of the preceding fastener tape is restrained to thus bring the corresponding alignment markers into registry, if the corresponding alignment markers proves out of registry with each other; and (e) the two rows of continuous fastener elements are applied to the longitudinal edges of the opposed fastener tapes with the alignment markers in registry with each other, so that a slide fastener chain having the continouous fastener tapes bearing their respective patterns matched with each other is provided.
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