Attachment mechanism for nonwoven thermoformed articles and method of manufacture thereof
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United States of America Patent
Stats
-
Mar 10, 1992
Grant Date -
N/A
app pub date -
Sep 12, 1990
filing date -
Sep 12, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for attaching thermoformed substrate material having front and back surfaces to a support frame. The device includes a fastener having a base portion and an attachment portion projecting from the base portion for engagement with the support frame. A nonwoven, needle-punched fiber sheet having first and second surfaces sandwiches the base portion between the first surface of the sheet and the back surface of the substrate. The sheet includes a central aperture having a width dimension sufficiently great to permit the attachment portion to project therethrough yet sufficiently narrow to enable the sheet to overlay the base portion. The sheet includes an enriched area of lower melting point fiber disposed proximate the first surface of the sheet and activatable to bond the first surface of the sheet to the back surface of the substrate without material flow and at a temperature utilized to thermoform the substrate material. This secures the base portion to the substrate material.
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