초록 ▼

A house wrap film product includes a laminated poly film with a first poly film ply and a second poly film ply and micropuncture formed in the laminated poly film to allow vapor transmission from a first side of the laminated poly film to a second side of the laminated poly film. Each of the poly pl

A house wrap film product includes a laminated poly film with a first poly film ply and a second poly film ply and micropuncture formed in the laminated poly film to allow vapor transmission from a first side of the laminated poly film to a second side of the laminated poly film. Each of the poly plies is formed of a spiral cut film having a first ply with a first orientation and a second ply having a second orientation, the first orientation being at an angle with respect to an edge of said film and said second orientation being at an angle with respect to an edge of said film, said first ply and said second ply being laminated together cross oriented such that said first orientation extends in a different direction from said second orientation. The micropuncture provides a deformed region of said film, surrounding said hole. A method is provided for forming the house wrap product.

대표청구항 ▼

[ What is claimed is:] [1.] A house wrap film product, comprising: a laminated polyolefin film including a first polyolefin film ply and a second polyolefin film ply, said first ply having a first orientation and said second ply having a second orientation, said first orientation being at an angle w

[ What is claimed is:] [1.] A house wrap film product, comprising: a laminated polyolefin film including a first polyolefin film ply and a second polyolefin film ply, said first ply having a first orientation and said second ply having a second orientation, said first orientation being at an angle with respect to an edge of said film and said second orientation being at an angle with respect to an edge of said film, said first ply and said second ply being laminated together cross oriented such that said first orientation extends in a different direction from said second orientation, said laminated polyolefin film being corrugated; and micropuncture formed in said laminated polyolefin film to allow vapor transmission from a first side of said laminated polyolefin film to a second side of said laminated polyolefin film, each of said micropuncture including a hole with a surrounding conical shape extending outwardly of a surface of said laminated film at one side and having a concavity at an opposite side.