EP0103458A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Wallcoverings in roll form
Assignee: Reed International Ltd
•
Filing: 1983-09-07
•
Granted: —
•
Expires: 2003-09-07
Abstract
Abstract A wallcovering comprising a paper ply (13) and plastics ply (10) laminated together and embossed after lamination has materials of the plies chosen so that inherent expansion of the paper ply when wetted is substantially wholly restrained by high resistance of the plastics ply to stretching without taking the plastics ply beyond its elastic limit so that the wallcovering does not bubble or pucker when the paper ply is wetted. Materials suitable for the plastics ply are foamed polystyrene and orientated polypropylene. A degree of fissuring, of the plastics ply during embossing is acceptable and can aid porosity for drying.
Inventors
- 👤 Thomas Graham
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 11:13
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/10; B32B27/32; B32B29/00; B32B29/002; B32B29/007; B32B3/00; B32B3/26; B32B3/30; B32B38/00; B32B38/0008; B32B38/06; B32B7/00; B32B7/04; B32B7/12; B44; B44C; B44C7/00; D; D21; D21H; D21H27/00; D21H27/18; D21H27/20; B32B2266/00; B32B2266/02; B32B2266/0214; B32B2266/0221; B32B2266/0228; B32B2307/00; B32B2307/50; B32B2307/514; B32B2307/70; B32B2307/732; B32B2307/734; B32B2310/00; B32B2310/14; B32B2323/00; B32B2323/10; B32B2607/00; B32B2607/02; D21H23/00; D21H23/02; D21H23/22; D21H23/52; D21H23/64; D21H27/02; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24802; Y10T428/24934; Y10T428/249921; Y10T428/249953; Y10T428/249962; Y10T428/249964; Y10T428/249965; Y10T428/249981; Y10T428/28; Y10T428/2813; Y10T428/283; Y10T428/31504; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31899; Y10T428/31902
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
105 words
A wallcovering in roll form comprising two plies (10, 13) which have been laminated together and whilst together, and preferably moist, subjected to an embossing process characterised in that one ply (13) is a paper material and the other ply (10) is a plastics material in which the paper material is flexible and has a wet expansion property and in which the plastics material has a low water liquid permeability, is flexible, is dimensionally stable in the presence of water and is capable of restraining expansion of the wallcovering when it is wetted without exceeding its elastic limit and has a high resistance to stretching.
Claim 2
Dependent Claim
105 words
A wallcovering in roll form comprising two plies (10, 13) which have been laminated together and whilst together, and preferably moist, subjected to an embossing process characterised in that one ply (13) is a paper material and the other ply (10) is a plastics material in which the paper material is flexible and has a wet expansion property and in which the plastics material has a low water liquid permeability, is flexible, is dimensionally stable in the presence of water and is capable of restraining expansion of the wallcovering when it is wetted without exceeding its elastic limit and has a high resistance to stretching.
Claim 3
Dependent Claim
49 words
A wallcovering as claimed in claim 1 in which the resistance to stretching is such that with the paper ply material having a cross-direction expansion in the range of 1 to 3% when saturated with water the wallcovering cross-direction expansion is less than 0.4% and preferably less than 0.25%.
Claim 4
Dependent Claim
28 words
A wallcovering as claimed in claim 2 in which the plastics ply material is foamed polystyrene having a web thickness in the range of 50 - 500 microns.
Claim 5
Dependent Claim
24 words
A wallcovering as claimed in claim 2 in which the plastics ply material is orientated polypropylene in the range of 10 - 250 microns.
Claim 6
Dependent Claim
37 words
A wallcovering as claimed in claim 2 in which the plastics ply has been taken beyond its rupture point in the course of embossing so that short, spaced, along-the-web, fissures are created to improve porosity for drying.
Claim 7
Dependent Claim
37 words
A wallcovering as claimed in claim 1 in which the plastics ply material has a water vapour permeability in the range of 3 - 600 g/m 2 /24 hours at 38 0 C and 90% relative humidity.
Claim 8
Dependent Claim
14 words
A wallcovering as claimed in claim 1 in which the paper ply is pre-decorated.
Claim 9
Dependent Claim
27 words
A decorated wall having a wall covering as claimed in claim 1 hung by applying dry to a wet-pasted wall and coated with a water-based decorative material
Claim 10
Dependent Claim
72 words
A method of making a roll wallcovering according to claim 1 comprising taking a paper ply in the thickness range of 75 microns to 350 microns and laminating it with a tacky water-based adhesive to a ply of plastics material of foamed polystyrene, corona discharge treated on both faces, in the thickness range of 50 microns to 500 microns, drying immediately after embossing, and piece winding the dried embossed laminate into rolls.
References Cited (Backward Citations)
US2759866A
Cited
DE1035614B
Cited
US3212957A
Cited
GB1075674A
Cited
GB1262277A
Cited
US3752732A
Cited
DE2144677A1
Cited
GB1566273A
Cited
US4180427A
Cited
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.