Coextruded polymeric netting and method of making the same

Abstract

Coextruded polymeric netting having a longitudianl direction comprises: a plurality of pairs of: first segments each having first and second opposed major surfaces and a thickness, the first segments comprising first material; second segments comprising second material, wherein adjacent first segments are joined together via a second segment, wherein the second segments extend from the second major surface past the first major surface of each first adjacent segment and has a distal end, the second segments having first and second opposed major surfaces, wherein there is a gap between adjacent second segments; and a third material, different from the first and second materials on at least one of the first or second major surfaces of at least every other second segment, wherein the first segments, second segments, and third material each extend continuously for at least 5 mm in the machine direction, and first and second materials of adjacent pairs are periodically bonded together in the longitudianl direction. Uses for coextruded polymeric articles described herein include fasteners.

Description

Background technique [0001] Coextruded polymeric articles (including layers) having protrusions are known in the art. For example, it is known to provide a coextruded layer structure in which the layers are split not into coextensive layers in the thickness direction but into strips or strips along the width dimension of the layer. segment. This is sometimes referred to as "side by side" coextrusion. [0002] Additional polymeric articles having protrusions that provide different configurations and / or properties (eg, adhesive properties) than conventional articles are desirable. Adhesive systems are known which switch from a state of relatively low or no adhesion to a much higher the state of adhesion. Many of these systems use triggers such as solvents, ultraviolet light, heat, or magnetism to create layered adhesive properties once or repeatedly. These systems are limited in application for several reasons. For many of these triggers, the adhesive system must contain s...

AI Technical Summary

Problems solved by technology

Additionally, some triggers are difficult or inconvenient for consumers to use

Certain triggers and chemical groups in the adhesive that respond to such triggers can be cost-prohibitive

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