초록 ▼

A method for producing an internally reinforced aeolotropic thermoplastic film web through coextrusion of two polymeric materials, and more particularly, a method of forming a film web possessing an enhanced tensile strength in at least the longitudinal or machine direction of the film web. A plasti

A method for producing an internally reinforced aeolotropic thermoplastic film web through coextrusion of two polymeric materials, and more particularly, a method of forming a film web possessing an enhanced tensile strength in at least the longitudinal or machine direction of the film web. A plastic film having internal striplike reinforcements entirely embedded within a matrix material is formed by the inventive method, and such film is utilized for various articles; for instance, plastic bags, bag components such as handles by liners, stretch wrap film, and the like.

대표청구항 ▼

An internally reinforced aeolotropic thermoplastic film web constituted of coextruded thermoplastic resins having an increased tear resistance and tensile strength in at least the longitudinal or machine direction of said film web; comprising: (a) a first thermoplastic resin forming a matrix for sai

An internally reinforced aeolotropic thermoplastic film web constituted of coextruded thermoplastic resins having an increased tear resistance and tensile strength in at least the longitudinal or machine direction of said film web; comprising: (a) a first thermoplastic resin forming a matrix for said thermoplastic film web; and (b) a plurality of discrete parallel spaced continuous strips or stripes of a second thermoplastic resin embedded entirely within the confines of said first film web-forming thermoplastic matrix and extending in the machine direction of said film web to constitute said internally reinforced aeolotropic thermoplastic film having said increased tensile strength.