US 7,093,397 B2Granted

Polymeric foam and scrim sheathings

AssigneePactiv Corporation

InventorsDouglas S. Nordgren, John W. Lubker, II, Kenneth Franklin

Life of this patent

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Abstract

A sheathing adapted to be fastened to at least one wall supporting structure comprises at least two layers. The first layer comprises a polymeric foam layer. The second layer comprises a polymeric scrim and is located adjacent to the first layer. The second layer has a first portion and a second portion. The second portion is located near the periphery of the polymeric scrim layer. The first portion has a first machine direction (MD) scrim count number and a first transverse direction (TD) scrim count number, and the second portion has a second MD scrim count number and a second TD scrim count number. At least one of the second MD scrim count number and the second TD scrim count number is greater than the respective first MD scrim count number or the first TD scrim count number so as to inhibit failure of the scrim.

Claims15

Dependent claims

A sheathing adapted to be fastened to at least one wall supporting structure, the sheathing comprising at least three layers:

(a) a first layer comprising a polystyrenic foam layer;
(b) a second layer comprising a polymeric cross-woven scrim, the polymeric cross-woven scrim including a first portion and a second portion, the second portion being located near the periphery of the polymeric scrim layer, the first portion having a first machine direction scrim count number and a first transverse direction scrim count number, the second portion having a second machine direction scrim count number and a second transverse direction scrim count number, at least one of the second machine direction scrim count number and the second transverse direction scrim count number being greater than the respective first machine direction scrim count number or the first transverse direction scrim count number;
(c) a third layer comprising an impact polystyrene;
(d) a fourth layer comprising an impact polystyrene;
(e) a first adhesive;
(f) a fifth layer comprising a polypropylene layer;
and
(g) a second adhesive;
wherein said third layer is located between said first and said second layers, said fourth layer being located adjacent to said first layer, said first layer being located between said third and said fourth layers, said first adhesive being located between said second and said third layers, said fourth layer being located between said second adhesive and said first layer, and said second adhesive being located between said fourth layer and said fifth layer.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/782,480Filed 19 Feb 2004 · continuation
Priority: 20 Oct 1999
Published: US 2004/0163348 A126 Aug 2004
Granted: 22 Aug 2006
Term ends: Not estimatedThe source records don’t support an estimate.

Classification26 codes

B32B 27/065
As the main or only constituent of a layer, which is next to another layer of the same or of a different material: of foam
B32B 5/18
Layered products characterised by the non- homogeneity or physical structure , i.e. comprising a fibrous, filamentary, particulate or foam…
B32B 5/24
Characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed: one…
B32B 7/12
Interconnection of layers: using interposed adhesives or interposed materials with bonding properties

Family

Application09/421,031Parent of this continuation-in-part · filed 20 Oct 1999
Application09/660,649Parent of this continuation · filed 13 Sep 2000
US 2004/0163348 A1Pre-grant publication · published 26 Aug 2004
US 6,536,176 B1Parent of this continuation-in-part
Application09/660,649Parent of this continuation-in-part
US 7,100,337 B1Related patent
US 7,093,397 B2This patent

From the US filing history. Foreign family members aren’t listed.