US 4,158,584 AGranted

Ultrasonic method for manufacturing brassiere tapes

AssigneeCavitron Corporation

InventorsRobert A. Clarke, Peter J. Kuhl, Richard H. Paschke

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Abstract

Brassiere tapes having a body portion and a pair of overlapping tabs extending outwardly therefrom are manufactured by providing a continuous strip of material for the tapes having fastener elements spaced along the strip and layers in the body portion and in each of the tabs weldable with ultrasonic vibratory energy. The tabs are separated physically from each other such that the individual layers in the strip may be simultaneously severed and welded across the body portion and the tabs when interposed between ultrasonically vibrating horn and anvil devices, except that the tabs which are physically separated from each other are not welded to each other. Compliant means for mounting of the anvil is provided so that the cutting edge for severing the tapes from the strip which is associated with the anvil is not readily dulled by the repetitive contacting engagement of the horn and anvil surfaces in the operative position. Advancing the strip between the horn and the anvil is accomplished by means of the elements on the strip for continuously producing tapes having a desired number of elements thereon.

Claims8

Dependent claims

The method of fabricating tapes from an elongated continuous strip of material formed of flexible layers capable of being ultrasonically welded, the tapes having one edge terminating in a pair of overlapping tabs, the method comprising the steps of

A. interposing between said layers of the portion of said strip forming said tabs a stationary anvil means for permitting individual layers of material in each of said tabs to be simultaneously welded together, while preventing said tabs from being welded to each other.
B. engaging said portion of said strip between oppositely disposed horns vibrating at an ultrasonic rate with said stationary anvil means aligned therewith, and engaging the remainder of said strip between a movable anvil means and one of said horns, said horns and said anvil means togetherengaging said strip to form a weld transversely thereacross
C. effecting reciprocation of said movable anvil means and said horns between said strip-engaging and an open position in which said anvil means and said horns are spaced apart for receiving said strip therebetween, and
D. advancing said strip between said horns and anvil means intermittently in timed relationship of said reciprocation thereof to said open position.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 05/825,756Filed 18 Aug 1977 · continuation in part
Priority: 29 Oct 1976
Granted: 19 Jun 1979
Term ends: Not estimatedThe source records don’t support an estimate.

Classification31 codes

B29C 66/004
General aspects of processes or apparatus for joining preformed parts: preventing sticking together, e.g. of some areas of the parts to be joined
A41H 37/02
Machines, appliances or methods for setting fastener-elements on garments: setting hooks or eyes
A44B 13/0011
Characterised by their material: made of wire
A44B 13/0047
Characterised by their way of fastening to the support: welded or moulded