Static structures (e.g. – buildings) – With synthetic resinous component – Foam
Reexamination Certificate
1999-01-26
2001-05-08
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
With synthetic resinous component
Foam
C052S309600, C052S309800, C052S406200, C052S406300
Reexamination Certificate
active
06226943
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to building construction and, more particularly, to assemblies of materials used in the walls of homes, offices, and other buildings where insulation against wind, water, or outside temperatures is necessary.
A common type of wall construction is wood frame construction as illustrated in
FIGS. 1A and 1B
. In this type of construction, wood studs are used to make an outer frame
1
having a wall height WH with inner support members
2
. Glass wool or cellulose fiber insulation
3
is placed between the studs.
FIG. 1B
is a cross section of a frame construction that also uses exterior sheets of polystyrene foam sheet, plywood, or oriented strand board
4
, which are attached to the portion of the frame that will form the exterior portion of the wall. If desired, the exterior wall may be covered with a wrap of a plastic film material (such as Tyvek™ film)
5
.
The installation of glass wool, cellulose fibers, or other insulating materials such as “blown-in-place” foams between the studs in a separate step is often a time-consuming process. The fibers in fiber-based insulation are often irritating if inhaled, and formaldehyde-based resins used in such insulation may contain free formaldehyde. Blown-in-place foams prepared on site are often difficult to precisely control during the foaming and installation process, which may lead to an excess of wasted material, in addition to any chemical exposure risks that may be involved in their use. Any of the above-mentioned insulating materials may deteriorate and partially collapse within the wall over time, resulting in a decrease in insulation efficiency. In addition, such materials may absorb moisture and be susceptible to mildew growth.
SUMMARY OF THE INVENTION
In one aspect, this invention is an insulating polymer foam sheet having two major sides and at least one groove in at least one of said sides,
wherein at least a portion of the foam sheet adjacent to the groove is compressible and resilient, said portion having a length and height the same as a groove adjacent thereto;
and wherein each groove and compressible portion is of a width which will permit the groove to receive and tightly fit around a support member in a frame building construction.
In another aspect, this invention is a building wall assembly, comprising:
(a) a plurality of support members; and
(b) an insulating polymer foam sheet having at least one groove in at least one of its two major sides,
wherein at least a portion of the foam sheet adjacent to the groove is compressible and resilient, said portion having a length and height the same as a groove adjacent thereto;
and wherein at least one of said support members is positioned in said groove, which fits tightly around said support member.
It has been discovered that the use of a foam or multilayer foam composite having the above-described profiles and resiliency characteristics provides a more efficient means to construct a wall having desirable insulation properties. These and other advantages of the invention will be apparent from the description that follows.
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“Insulwall”, publication of Beaver Plastics, printed from web site on Feb. 16, 1998.
Grinshpun Vyacheslav S.
Schaller Michael E.
Friedman Carl D.
Glessner Brian E.
The Dow Chemical Company
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