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(12) United States Patent (10) Patent No.: US 7,981,242 B2 Brown (45) Date of Patent: Jul

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(12) United States Patent (10) Patent No.: US 7,981,242 B2 Brown (45) Date of Patent: Jul US007.981242B2 (12) United States Patent (10) Patent No.: US 7,981,242 B2 BrOWn (45) Date of Patent: Jul. 19, 2011 (54) PRINTED VULCANIZED FIBRE-BASED (58) Field of Classification Search .................. 156/277, PRODUCT AND PROCESS FOR MAKING 156/307.1, 307.3, 307.4, 307.7; 428/106, THE SAME 428/109, 199, 211.1, 300.1, 535, 537.1 See application file for complete search history. (75) Inventor: Watson F. Brown, Wilmington, DE (US) (56) References Cited (73) Assignee: ele Associates Global LLC, Landenberg, PA (US) U.S. PATENT DOCUMENTS 3,502,533 A 3, 1970 Reiss 3,769,143 A 10, 1973 Kulesza (*) Notice: Subject to any disclaimer, the term of this 3,935,047 A 1/1976 Shinomura et al. patent is extended or adjusted under 35 4,310,581 A 1/1982 Felter et al. U.S.C. 154(b) by 517 days. 4473,613 A 9, 1984 Jaisle et al. 4,713,299 A 12/1987 Taylor et al. (21) Appl. No.: 11/956,549 (Continued) (22) Filed: Dec. 14, 2007 FOREIGN PATENT DOCUMENTS DE T421399 9, 1975 (65) Prior Publication Data GB 15O1205 2, 1978 GB 2124911 2, 1984 US 2008/O156432 A1 Jul. 3, 2008 JP 2003181996 T 2003 OTHER PUBLICATIONS Related U.S. Application Data Abstract of DE-7421399. European Patent Office (EPO), Sep. 4, (62) Division of application No. 10/979,627, filed on Nov. 1975.* 2, 2004, now Pat. No. 7,329,455. Primary Examiner — Sonya Mazumdar (60) Provisional application No. 60/531,440, filed on Dec. (74) Attorney, Agent, or Firm — Connolly Bove Lodge & 18, 2003. Huitz LLP (51) Int. Cl. (57) ABSTRACT B4 IMS/00 (2006.01) A three-ply product includes a particle board core assembled CO95/02 (2006.01) with a patterned Vulcanized fiber sheet or layer on each sur B29C 65/02 (2006.01) face. One of the Vulcanized fiber sheets may have a preprinted B32B 37/4 (2006.01) decorative pattern provided thereon. The other Vulcanized B32B 3/02 (2006.01) fiber sheet may also be decorative, or merely a plain sheet of B44C5/04 (2006.01) Vulcanized fiber. The product is useful for woodworking B29C 65/56 (2006.01) applications, and may be processed (i.e., stained, Sanded, B29C 65/72 (2006.01) lacquered, etc.) like a natural wood product. Unlike prior B44C3/OO (2006.01) Vulcanized fiber processes, the process of making the Vulca (52) U.S. Cl. .................. 156/307.3; 156/277; 156/307.1; nized fibersheets preprints a pattern, in a preprinting process, 156/307.4; 156/307.7; 428/199: 428/211.1; on the top sheets of cellulose paper plies. 428/300.1 10 Claims, 1 Drawing Sheet US 7.981242 B2 Page 2 U.S. PATENT DOCUMENTS 6,280,820 B1 8, 2001 Martino 2001, 0046594 A1 11, 2001 Takemoto 4,822,440 A 4, 1989 Hsu et al. 2002fO168503 A1 11, 2002 Dong et al. 4,849,768 A 7, 1989 Graham 2003/0041962 A1 3, 2003 Johnson et al. 5,526,102 A * 6/1996 Kato ............................. 399 302 2004/OO86678 A1 5, 2004 Chen et al. 5,827,788 A 10, 1998 Miyakoshi et al. 6,217,694 B1 * 4/2001 Taniguchi ..................... 156,235 * cited by examiner U.S. Patent U. 19, 2011 US 7,981,242 B2 SSS) X&S \\\ N \\\\\ / - US 7,981,242 B2 1. 2 PRINTED VULCANIZED FIBRE-BASED After Sufficient time has elapsed, the press is opened and PRODUCT AND PROCESS FOR MAKING the cured panel 100 is removed. The edge faces of the cured THE SAME panel 100 may then be edge-banded by cementing to them decorative or other face strips. Strips of a cross band sheet may be used for this purpose with the help of standard adhe CROSS-REFERENCE TO RELATED sives such as ethylene-vinyl acetate and polyamide hot melt APPLICATIONS adhesives used for edge banding. Cold-setting adhesives Such as the usual urea-formaldehyde and polyvinyl acetate adhe This application claims priority under 35 U.S.C. S 120, and sives may also be used for this purpose as well as for cross is a divisional application of U.S. patent application Ser. No. banding if desired. 10/979,627, filed Nov. 2, 2004, now U.S. Pat. No. 7,329,455, 10 The core 102 of FIG. 1 is shown as a single piece as large which claims benefit under 35 U.S.C. S 119(e) of provisional as the panel, but it may be assembled from two or more pieces U.S. Patent Application No. 60/531,440, filed Dec. 18, 2003. preferably cemented together as needed to make up the desired length and width. A particularly desirable arrange BACKGROUND OF THE INVENTION ment has a particleboard core Surrounded on its four edges 15 with one or one-halfinch wide strips of solid wood, and this A. Field of the Invention is cross banded without requiring edge banding. While the conventional fancy face five-ply natural wood The present invention relates generally to the hot pressing Veneer-based panel products offer many advantages over of layers of natural or reconstituted wood products as in the natural wood products, the five-ply products require signifi manufacture of pressed wood panels for furniture making, cant manufacturing steps and do not offer the visual appear and, more particularly, to a printed Vulcanized fibre-based ance of a natural wood product. Furthermore, conventional product and process for making the same. fancy face five-ply natural wood veneer-based panel products B. Description of the Related Art cannot be processed (i.e., stained, sanded, lacquered, etc.) Vulcanized cellulose fibre is well-suited as a cross band like a natural wood product. and face veneer material for wood paneling. Vulcanized fibre Thus, there is a need in the art for a cellulose-based product has extremely high tensile strength in all directions so that a that overcomes the problems of the related art. thin Vulcanized fibre can be used to securely anchor wooden 25 sheets or veneers in place. Moreover, its cellulosic nature is SUMMARY OF THE INVENTION highly compatible with wood so that splitting and checking of The present invention solves the problems of the related art the face veneers are eliminated. by providing a three-ply product with wood grain pattern Vulcanized fibre can vary in thickness from about 0.25 printing on the Surface ply of Vulcanized fibre, producing a millimeters to about 0.80 millimeters, and preferably are 30 manufactured veneer useful for woodworking applications. colored with pigments to match the colors of face Veneers. The product of the present invention may be processed (i.e., Also these Vulcanized fibres can be laminated from about two stained, sanded, lacquered, etc.) like a natural wood product. to about six verythin plies of cellular paper. The pigments are Further scope of applicability of the present invention will conveniently added to the beater stock from which rolls of become apparent from the detailed description given herein paper are made, and no more than about 0.5% to about 2% 35 after. However, it should be understood that the detailed pigment need be used, based on the dry weight of the fibre. description and specific examples, while indicating preferred The papers used for making Vulcanized fibre are formed embodiments of the invention, are given by way of illustration continuously into rolls on Fourdrinier paper machines from only, since various changes and modifications within the 100% Kraft or sulfite pulp. Each roll preferably contains spirit and scope of the invention will become apparent to about 2.5 to about four ounces of fibre per square yard, based those skilled in the art from this detailed description. It is to be on the dry weight of the fibre. 40 understood that both the foregoing general description and The paper rolls are dried to a moisture content of about 2% the following detailed description are exemplary and to about 4%, then Superimposed and fed in Superimposed explanatory only and are not restrictive of the invention, as condition through the Vulcanizing tank and then through the claimed. purification tanks, followed by drying. The Vulcanizing treat BRIEF DESCRIPTION OF THE DRAWINGS ment causes the Superimposed plies to adhere to each other, 45 and after the drying they will not delaminate. The purification The present invention will become more fully understood tanks wash the Vulcanizing chemical from the sheets. The from the detailed description given hereinbelow and the laminate may then be calendared to a uniform thickness and accompanying drawings which are given by way of illustra Smooth Surface. tion only, and thus are not limitative of the present invention, The Vulcanized fibre web can be wound onto a roll or 50 and wherein: sheeted. At that stage, the web may be dry, that is have a FIG. 1 is an exploded perspective view of a conventional moisture content of about 6% to 7%. fancy face five-ply natural wood veneer-based panel; FIG. 1 is an isometric view of a conventional fancy face FIG. 2 is an exploded perspective view of a three-ply prod five-ply natural wood veneer-based panel 100. Panel 100 uct in accordance with the present invention and having consists of a particleboard core 22 assembled with a cross 55 printed Vulcanized fibre layers that may be processed band sheet 104 on each surface, and with wood veneer face (stained, sanded, lacquered, etc.) like a natural wood product; sheets 106, 108 over each cross band sheet 104. Cross band and sheets 104 may or may not be made from Vulcanized fibre.
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