Flexible wallcoverings
Patent 4259386 Issued on March 31, 1981. Estimated Expiration Date: 
April 29, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 29, 2000. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3061475 3675245 3790421 Surface covering materials Process for making embossed needle-bonded fabric wall coverings Process for preparing a coated, thermosetting plastic foam having improved properties Foam coated ceiling board facing and method of making the same Patent #: 4162342 InventorAssigneeApplicationNo. 06/144827 filed on 04/29/1980US Classes:428/159, Component comprises a polymer (e.g., rubber, etc.)427/267, Variegated surface produced (e.g., mottled, stippled, wood grained, etc.)427/373, Cells, foam, or bubbles formed428/211.1, Including paper layer428/319.7, Linear or thermoplastic428/326Cellulosic (e.g., wood, paper, cork, rayon, etc.)ExaminersPrimary: Van Balen, William J.Attorney, Agent or FirmInternational ClassesB44C 1/20 (20060101)B32B 27/10 (20060101) B44C 1/00 (20060101) D21H 27/20 (20060101) D21H 27/18 (20060101) D21H 27/02 (20060101) D21H 21/52 (20060101) D21H 21/00 (20060101) AbstractA flexible wallcovering is made by applying a foamable composition (13) to a woodchip paper (12, 14) having woodchips defining a relief surface on the paper by a screen printing process and then foaming the composition. Preferably, the wallcovering is of two ply construction with a woodchip content between the plies and the paper is formulated so that the upper ply is dry removable from the lower ply. The woodchips are at least 2 mm in average length; and the woodchips form 20 to 35% by weight of the paper. | |
