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1. (US5776841) Sheet felt

Office : United States of America
Application Number: 08940346 Application Date: 30.09.1997
Publication Number: 5776841 Publication Date: 07.07.1998
Grant Number: 5776841 Grant Date: 07.07.1998
Publication Kind : A
IPC:
B32B 5/28
B32B 5/18
B32B 5/22
B32B 5/26
C08K 7/00
C08K 7/02
E04C 2/10
E04C 2/24
E04D 5/00
E04D 5/02
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
22
characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
24
one layer being a fibrous or filamentary layer
28
impregnated with or embedded in a plastic substance
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
18
characterised by features of a layer containing foamed or specifically porous material
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
22
characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
B PERFORMING OPERATIONS; TRANSPORTING
32
LAYERED PRODUCTS
B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
5
Layered products characterised by the non-homogeneity or physical structure of a layer
22
characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous
24
one layer being a fibrous or filamentary layer
26
another layer also being fibrous or filamentary
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
7
Use of ingredients characterised by shape
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
K
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
7
Use of ingredients characterised by shape
02
Fibres or whiskers
E FIXED CONSTRUCTIONS
04
BUILDING
C
STRUCTURAL ELEMENTS; BUILDING MATERIALS
2
Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
02
characterised by specified materials
10
of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
E FIXED CONSTRUCTIONS
04
BUILDING
C
STRUCTURAL ELEMENTS; BUILDING MATERIALS
2
Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
02
characterised by specified materials
10
of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
24
laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20157
E FIXED CONSTRUCTIONS
04
BUILDING
D
ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
5
Roof covering by making use of flexible material, e.g. supplied in roll form
E FIXED CONSTRUCTIONS
04
BUILDING
D
ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
5
Roof covering by making use of flexible material, e.g. supplied in roll form
02
of materials impregnated with sealing substances, e.g. roofing felt
CPC:
B32B 5/245
B32B 5/18
B32B 5/26
B32B 2262/062
B32B 2262/101
B32B 2266/0278
B32B 2305/022
B32B 2305/70
B32B 2553/00
C08K 7/02
E04C 2/243
E04D 5/02
E04D 12/002
Y10T 442/50
Applicants: Building Materials Corporation of America
Inventors: Bondoc Alfredo A.
Horner Charles J.
Agents: Maue Marilyn J.
Davis William J.
Katz Walter
Priority Data: 08552901 03.11.1995 US
Title: (EN) Sheet felt
Abstract:
(EN)

This invention concerns a light weight sheet felt material suitable for use as roof and siding underlayment and insulation board facing which comprises on a dry basis PA1 (a) 60-80 wt. % cellulose fibers; PA1 (b) 15-30 wt. % glass fibers having a diameter of 5 to 16 microns and a length of 3/8-3/4 inch; PA1 (c) 4-10 wt. % binder and PA1 (d) 0.5-10 wt. % non-asphaltic, sizing agent having a flash point above 150.degree.F. and an evaporation rate less than one which is selected from the group consisting of anionic rosinous and amphipathic ester and anhydride sizes and mixtures thereof. PAL The felt of this invention is of considerably lighter weight and higher porosity than other felting materials used for the same purpose and can be supplied in longer continuous sheet rolls than heretofore practical from a standpoint of handling, shipping, storage, and installation. Also the present sheet felt can be produced on conventional felt making equipment in a one step process.


Also published as:
MXPA/a/1998/003384EP0858480CA2236643WO/1997/016483