Foam wall structure

Patent metadata

Field	Value
Publication number	US-RE49073-E
Application number	US-202017099865-A
Country	US
Kind code	E1
Filing date	Nov 17, 2020
Priority date	Sep 27, 2013
Publication date	May 17, 2022
Grant date	May 17, 2022

Abstract

A foam wall structure includes a frame, at least one primary support member, a slab of polyiso board and a foam layer. The frame can include: a first member, a second member spaced apart from the first member; and two side members extending between the first and second members. The frame defining a front frame surface and an opposite rear frame surface. The at least one primary support member can be positioned between the two side members and extend between the first and second member. The primary support member defines a front support surface and an opposite rear support surface. The slab of polyiso board may be attached to the front frame surface. The foam layer can be received within at least a portion of the frame and overlies the front surface of the primary support member. A method of making a foam wall structure and a pre-fabricated wall is also disclosed.

First claim

What is claimed is:

1. A foam wall structure comprising:
a) a frame comprising:
a first member;
a second member spaced apart from the first member; and
two side members extending between the first and second members, wherein the first member, second member, and two side members each have a front surface and a rear surface that form the front frame surface and the rear frame surface of the frame;

b) at least one primary support member positioned between the two side members and extending between the first and second member members, wherein the primary support member defines a front primary support surface and an opposite rear primary support surface corresponding to the front frame surface and rear frame surface;
c) foam insulation positioned over the front frame surface, the foam insulation positioned over the front frame surface consisting of Type II, Class 2 polyiso board according to ASTM C-1289 that is attached to and in contact with one of at least a portion of the front frame surface or at least a portion of the front primary support surface, such that the polyiso board, the first and second members, the two side members and the at least one primary support members define one or more voids within the frame; and
d) a foam layer received within at least a portion of one of the voids within the frame,
wherein the foam layer adheres to at least a portion of the polyiso board,
wherein the foam layer is dimensioned to a position intermediate the front frame surface and rear frame surface such that a gap is formed within the frame between the foam layer and the rear frame surface, and
wherein the foam wall structure has an ultimate load of ≥3,600 lbf when tested according to ASTM E72-05 in the absence of OSB and plywood, and
wherein the polyiso board has a thickness of about ½″ to about 3″.

2. The foam wall structure of claim 1 , wherein the foam layer does not overlie the front frame surface.

3. The foam wall structure of claim 1 , wherein the foam layer overlies at least a portion of the front frame surface.

4. The foam wall structure of claim 1 , wherein the polyiso board is attached to the at least a portion of the front face surface of the first and second members and the two side members by fasteners.

5. The foam wall structure of claim 4 , wherein the fasteners are selected from the group consisting of nails, staples and screws.

6. The foam wall structure of claim 1 , wherein the polyiso board is attached to at least a portion of the front face surface of the first and second members and the two side members by one or more adhesives.

7. The foam wall structure of claim 6 , wherein the adhesive is a thin portion of the foam layer.

8. The foam wall structure of claim 6 , wherein the adhesive is a second foam layer.

9. The foam wall structure of claim 1 , wherein the first member comprises two plates.

10. The foam wall structure of claim 1 , wherein the frame further comprises one or more secondary support members extending between two adjacent primary support members or a primary support member and a side member such that a secondary opening is formed within the frame.

11. The foam wall structure of claim 10 , wherein the secondary opening is free of foam, and a corresponding opening is present in the polyiso board.

12. The foam wall structure of claim 10 , wherein the frame further comprises one or more tertiary support members extending between two secondary support members, or between a secondary support member and the first member or the second member.

13. The foam wall structure of claim 1 , wherein the foam layer is formed in-situ during the manufacturing process.

14. The foam wall structure of claim 1 , wherein the foam layer comprises polyurethane, polyisocyanurate, or mixtures thereof.

15. The foam wall structure of claim 14 , wherein the foam layer is substantially free of halogen containing flame retardant additives.

16. The foam wall structure of claim 14 , wherein the foam layer is completely free of halogen containing flame retardant additives.

17. The foam wall structure of claim 6 , wherein the adhesive is selected from the group consisting of latex-based adhesives, reactive hot melts, polyester adhesives, polyamide adhesives, acrylic adhesives, one-component epoxy-based adhesives, one-component polyurethane-based adhesives and two-component polyurethane-based adhesives.

18. A foam corner piece suitable for attachment to the wall structure of claim 1 , comprising:
a) a generally L-shaped top member
b) a generally L-shaped bottom member;
c) at least two corner support members extending between and fixedly attached to the top member and the bottom member; the top member, bottom member and at least two corner support members defining an outer face of the foam corner piece;
d) one or more slabs of polyiso board attached to at least a portion of the outer face of the foam corner piece; the top member, bottom member, at least two corner support members, and the polyiso board defining a cavity within the foam corner piece; and
e) foam material deposited into the cavity of the foam corner piece in contact with at least a portion of the polyiso board and at least a portion of the at least two corner support members.

19. The wall structure of claim 1 , further comprising a home utility component selected from the group consisting of an electrical wire, a cord, a pipe, and a plumbing fixture disposed in the gap.

20. The wall structure of claim 19 , wherein the home utility component does not contact the foam layer.

21. The foam wall structure of claim 1 , wherein the polyiso board has a thickness of about ¾″ to about 2″.

22. The foam wall structure of claim 1 , wherein the foam wall structure has an ultimate load of ≥3,600 lbf when tested according to ASTM E72-05 in the absence of OSB and plywood.

23. The foam wall structure of claim 22 1, wherein the foam wall structure achieves an ultimate load of ≥4,500 lbf when tested according to ASTME ASTM E-72-05 Testing Standard in the absence of OSB and plywood.

24. A method of manufacturing the foam wall structure of claim 1 comprising:
a) providing a frame with at least one primary support member comprising:
i) a first member;
ii) a second member spaced apart from the first member;
iii) two side members extending between the first and second members, the frame defining a front frame surface and an opposite rear frame surface, wherein the first member, second member, and two side members each have a front surface and a rear surface that form the front frame surface and the rear frame surface of the frame; and
iv) at least one primary support member positioned between the two side members and extending between the first and second member members, wherein the primary support member defines a front primary support surface and an opposite rear primary support surface corresponding to the front frame surface and rear frame surface;

b) providing Type II, Class 2 polyiso board according to ASTM C-1289;
c) orientating the front frame surface over the polyiso board such that the front frame surface is substantially parallel to and in contact with the rear face of the polyiso board;
d) attaching the polyiso board to the front frame surface;
e) depositing foam material into the frame; and
f) allowing the foam material to expand within at least a portion of the frame to a position intermediate the front frame surface and the rear frame surface such that a gap is fo

Assignees

• Covestro Llc

Inventors

• Lambach James
• Nicola William J
• Giles Eric
• Grisolia Anthony
• Oberg Bradley W

Classifications

• E04C2/205 Primary

  of foamed plastics, or of plastics and foamed plastics, optionally reinforced · CPC title

• E04B1/10

  the elements consisting of wood · CPC title

• E04C2/386

  with a frame of unreconstituted or laminated wood · CPC title

• E04C2/46

  specially adapted for making walls (E04C2/52, E04C2/54 take precedence; structure of slab-shaped elements E04B1/02; walls of elements of relatively thin form E04B2/72) · CPC title

• Y10T428/233

  Foamed or expanded material encased · CPC title