초록 ▼

A synthetic resin resiliently flexible separable fastener strip adapted for attachment to a substrate, is thermoplastically extruded in continuous strip form and provided with a base surface to which is applied during extrusion an adhesive in fluent state, with the extruded strip and adhesive carrie

A synthetic resin resiliently flexible separable fastener strip adapted for attachment to a substrate, is thermoplastically extruded in continuous strip form and provided with a base surface to which is applied during extrusion an adhesive in fluent state, with the extruded strip and adhesive carried thereby being then concurrently cured so that the fastener as formed and the adhesive in a dormant state on the strip can be rolled into a storage roll. The material of the fastener strip and the material of the adhesive are selected to permit the adhesive on the strip to be reactivated when the strip is to be adhesively bonded to a substrate, without deformably affecting the fastener strip. By extruding the strip without base webs, a plurality such as at least four, separate complementary strips can be extruded from a single die for efficiently joining sets of the profile strips into separable fastener assemblies immediately after concurrent curing of the extruded strips and the reactivatable adhesive.

대표청구항 ▼

A method of prefabricating a synthetic resin elastically deformable resiliently flexible, separable fastener profile strip adapted for subsequent attachment to a substrate, comprising: thermoplastically extruding the strip and providing the extruded strip with a base surface; applying reactivatable

A method of prefabricating a synthetic resin elastically deformable resiliently flexible, separable fastener profile strip adapted for subsequent attachment to a substrate, comprising: thermoplastically extruding the strip and providing the extruded strip with a base surface; applying reactivatable adhesive in a fluent state to said base surface during extrusion of the strip and before said strip is cured; thereafter chill curing the extruded strip; concurrently with said chill curing of the strip curing said adhesive on said base surface into a nonsticky dormant inactive state; and handling the strip by direct contact with said nonsticky dormant adhesive and thereby preparing the strip to be stored without protective cover over the adhesive, until used at a later time by reactivating said adhesive to permit adhesively bonding of the strip to a substrate. Apparatus for prefabricating a synthetic resin elastically deformable resiliently flexible separable fastener profile strip adapted for subsequent attachment to a substrate, and comprising: die means for thermoplastically extruding the strip and for providing the extruded strip with a base surface; means for applying adhesive in a fluent state to the base surface during extrusion of the strip and before curing of the strip; means, downstream from said die means and said adhesive applying means, for curing the extruded strip and concurrently curing said adhesive on said base surface into a nonsticky dormant state so that no cover is needed for the adhesive to permit handling of the strip before its intended use; and means for placing said strip and adhesive into condition to be stored until used at a later time by reactivating the dormant adhesive to permit adhesively bonding the strip to a substrate, and this means including handling means directly contacting the nonsticky dormant adhesive.