Ultrasonic method for manufacturing brassiere tapes
US4161420A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1977 |
| Grant date | Jul 17, 1979 |
| Priority date | — |
| Expiry date | Jun 14, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1054
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Brassiere tapes having a body portion and a pair of overlapping tabs extending outwardly therefrom are manufactured by providing a continuous strip of the tape material having elements spaced there along and layers at least in the body portion-forming part thereof. The material is weldable with ultrasonic vibratory energy, and the tabs are separated physically from each other while simultaneously maintained in acoustical energy coupling relation to each other, such that the individual layers of material in the strip are welded together across the body portion of a tape defined thereby and the tabs are individually welded along an edge but not welded together when interposed between an ultrasonically vibrating horn and an anvil. The strip is advanced on an intermittent basis between the horn and the anvil by the elements for continuously producing tapes having a desired number of elements thereon. The separating of the tabs is obtained by interposing an insulation element of material characterized in that it does not bond to the material under ultrasonic vibration but simultaneously permits the vibratory energy to be transmitted therethrough.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.