초록 ▼

A method for applying one or more curved composite elastic strips to a gatherable base material to elasticize portions of the base material comprises elongating a first strip of elastic material and joining a second strip of less elongated material to the elongated first strip in a longitudinally ex

A method for applying one or more curved composite elastic strips to a gatherable base material to elasticize portions of the base material comprises elongating a first strip of elastic material and joining a second strip of less elongated material to the elongated first strip in a longitudinally extending and laterally off-set relationship thereto to form a tensioned composite strip of elastic material. The second strip of material is sufficiently flexible in the plane of the composite strip and is sufficiently resistant to compression so that, upon release of the tensioning forces, the composite strip will curve laterally, i.e., in its own plane. The tensioned composite strip is adhered to the base material and in one mode of operation the tensioned forces are released only after adhering the composite strip to the base material. In such case, the base material is displaced somewhat by curving of the tensioned composite strip and may be pleated or otherwise rendered more readily displaceable. The resulting article comprises one having curved elasticized strips adhered thereto to elasticize portions thereof.

대표청구항 ▼

A method of securing one or more curved composite elastic strips to a gatherable base material to elasticize at least selected portions of the base material comprises: (a) applying tensioning forces to a first strip of elastic material to elongate it; (b) joining a second strip of less-elongated mat

A method of securing one or more curved composite elastic strips to a gatherable base material to elasticize at least selected portions of the base material comprises: (a) applying tensioning forces to a first strip of elastic material to elongate it; (b) joining a second strip of less-elongated material to the elongated first strip in longitudinally extending, laterally off-set relationship thereto to form a tensioned composite strip of elastic material, the second strip being sufficiently laterally flexible and sufficiently resistant to compression to cause the composite strip to laterally curve upon release of the tensioning forces; (c) releasing the tensioning forces on the composite strip whereby to allow it to laterally curve; and (d) securing the composite strip to the base material. An article comprising a gatherable base material having one or more elasticized portions thereof provided by one or more curved composite elastic strips secured thereto, the composite strips comprising a first strip of elastic material having a second strip of material adhered thereto and made by the steps of: (a) applying tensioning forces to a first strip of elastic material to elongate it; (b) joining a second strip of less-elongated material to the elongated first strip in longitudinally extending, laterally off-set relationship thereto to form a tensioned composite strip of elastic material, the second strip being sufficiently laterally flexible and sufficiently resistant to compression to cause the composite strip to laterally curve upon release of the tensioning forces; (c) releasing the tensioning forces on the composite strips whereby to allow it to laterally curve; and (d) securing the composite strip to the base material.