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US 7,972,455 B2Granted
Ultrasonic cut and bonded elastic material
AssigneeClover Group International Limited
InventorWai Ching Andy Lau
Life of this patent
Estimating the term…
Abstract
A method of forming a hem of an elastic material includes laying a first stretch fabric sheet upon a second stretch fabric sheet, cutting an excess edge strip from the first stretch fabric sheet and the second stretch fabric sheet along a fuse line and simultaneously fusing the sheets together along the fuse line, positioning an elastic strip between the first and second sheets along the fuse line, and fusing the elastic strip to one of the sheets to form a hem.
Claims8
A method of forming a hem at the edge of an elastic material, comprising:
- laying a first stretch fabric sheet upon a second stretch fabric sheet;
- forming a stitch line adjacent to an edge of said first and second stretch fabric sheets to join said first and second stretch fabric sheets together;
- ultrasonically cutting an excess edge strip from both said first and second sheets along a fuse line and thereby simultaneously ultrasonically fusing said sheets together along said fuse line and thereby removing the stitch line;
- positioning an elastic strip between the first and second sheets along said fuse line by opening said first and second sheets, laying an elastic strip along said fuse line and folding said second stretch fabric sheet about said elastic strip to sandwich said elastic strip between said first and second sheets;
- and
- fusing said elastic strip to at least one of said first or second sheet to form a hem, the hem being a portion of an edge of a breast cup of a brassiere.
3 more elements
Dependencies are inferred from the claim text.