초록 ▼

Lightweight, non-woven loop products for hook-and-loop fastening are disclosed, as are methods for making them and end products employing them. The products are non-woven webs of entangled fibers of substantial tenacity, the fibers forming both a sheet-form web body and hook-engageable, free-standin

Lightweight, non-woven loop products for hook-and-loop fastening are disclosed, as are methods for making them and end products employing them. The products are non-woven webs of entangled fibers of substantial tenacity, the fibers forming both a sheet-form web body and hook-engageable, free-standing loops extending from the web body. The product is stretched and stabilized to produce spaced-apart loop clusters extending from a very thin web of taut fibers. In important cases a binder is added to stabilize the product in its stretched condition. An example of the loop product is produced by needle-punching a batt of staple fibers in multiple needle-punching operations, applying a foamed acrylic binder, and then stretching the needled batt and curing the binder with the batt stretched. Other forming techniques are disclosed and several novel articles and uses employing such loop products are described, such as for filters and fasteners.

대표청구항 ▼

[ What is claimed is:] [1.]1. A method of forming a loop fastener component, the method comprising the steps ofproviding a sheet-form mat of fibers, the mat having width and includingat least one base fiber of a length greater than the width of the mat, andloop fibers freely disposed within the mat;

[ What is claimed is:] [1.]1. A method of forming a loop fastener component, the method comprising the steps ofproviding a sheet-form mat of fibers, the mat having width and includingat least one base fiber of a length greater than the width of the mat, andloop fibers freely disposed within the mat;tensioning the base fiber by applying tension across the width of the mat, thus forming a tensioned web formed by discrete, taut portions of base fiber extending between tightened entanglements, relative movement between portions of the base fiber during tensioning drawing together portions of the loop fibers to form clusters of upstanding, hook-engageable loops extending from the tightened entanglements within the tensioned web; andstabilizing the web in its tensioned state, the stabilized web and loops having a combined weight of less than about 4 ounces per square yard.