Class 156/40 - With bending or folding of facing sheet

Subclass of Class 156 - Adhesive bonding and miscellaneous chemical manufacture
Definition: Processes combined with the step of folding and/or
No. of patents: 23
Last issue date: 03/30/2010

Number	Title	Issue Date
7686902	Method of fabricating plaster board There is provided a lightweight plaster board having a cellular porous plaster core, excellent in adhesion to a covering base paper for a plaster board, free from dry-out in side edge parts of the plaster board, and with no disadvantage in workability for driving a ...	03/30/2010
7235115	Method of forming self-supporting pleated filter media The method of forming pleated filter media includes providing a generally planar web of filter material, folding the web to form a pleated web having a plurality of fold lines, arranging the plurality of pleats in a first spaced configuration defined by a first dist...	06/26/2007
7220329	Method for applying reference markings to wallboard during manufacture An apparatus and method for applying reference or grid markings to wallboard during the manufacturing process is disclosed. Reference or grid markings are applied to one sheet of cover paper at a location between the originating cover paper rolls and the cover paper...	05/22/2007
7204065	Cement render system A method for applying render to a substrate, said method including the steps of: securing a layer of confining mesh having a three-dimensional open cellular structure to the substrate; applying a base layer of cementitious material over the confining mesh; and scree...	04/17/2007
7187510	Method of magnetic transfer to flexible medium A signal such as a servo tracking signal is recorded on a flexible slave medium by magnetic transfer. When forming the flexible slave medium of a magnetic strip in a continuous length, the signal is recorded on the magnetic strip by patterned master magnetic transfe...	03/06/2007
7155866	Cementitious exterior sheathing product having improved interlaminar bond strength The present invention provides exterior building products, such as roofing and siding, shake, shingles, siding, sheathing, panels, planks, vertical siding, soffit panels, fencing, decking, fascia, corner posts, column corners and trim boards in which a plurality of ...	01/02/2007
7056583	Flyash coating The present invention includes a coating. The coating includes flyash in a concentration of 25 to 70 percent by weight; Portland cement; silica; and a curing agent. The coating optionally includes one or more of chopped nylon fiber; styrene; and, rubber. ...	06/06/2006
7049251	Facing material with controlled porosity for construction boards This invention provides facing materials for cementitious boards such as those including Portland cement or gypsum cores. The preferred facing material includes, in a first embodiment, a facing layer having an areal weight of about 300 grams/M2, and an ai...	05/23/2006
6878321	Method of manufacture of glass reinforced gypsum board and apparatus therefor Gypsum board having inorganic fiber, preferably glass fiber, preferably glass fiber, includes providing face sheets which have been completely impregnated with a gypsum slurry so as to penetrate through said random interstices between the inorganic fibers and to the...	04/12/2005
6689238	Labelling system An applicator 16 is used to apply a label 10 to a shaped CD ROM (not shown). The applicator 16 comprises a central projection 18 and peripheral locator pins 20a and 20b, as well as a well 22 in which to receive a shaped CD ROM. A label is secured to a CD ...	02/10/2004
6682617	Method for making wallboard or backerboard sheets including aerated concrete A method for making wallboard or backerboard sheets which are relatively lightweight, strong, and which have good fire resistance, thermal insulation, and sound absorbing properties includes forming core material having opposing first and second major sur...	01/27/2004
6547901	Reinforced plasterboard A reinforced plasterboard has a first layer of paper, a core of a cementitious material, a mesh reinforcement and adjacent to that mesh reinforcement a further layer of paper. The mesh may be in contact with the paper layer....	04/15/2003
6488792	Method and apparatus for manufacturing cementitious panel with reinforced longitudinal edge A cementitious panel comprising a cementitious core which is fabric-reinforced at the surface thereof and whose longitudinal edges are reinforced by a network of fibers. A panel may be obtained wherein the surface edge reinforcement layers are relatively ...	12/03/2002
6409855	Method for making wallboard or backerboard sheets including aerated concrete A method for making wallboard or backerboard sheets which are relatively lightweight, strong, and which have good fire resistance, thermal insulation, and sound absorbing properties includes forming core material having opposing first and second major sur...	06/25/2002
6306511	Hybrid laminate and manufacturing method therefor There is disclosed a hybrid laminate comprising: a substrate layer containing a compact of first powder; and a functional material layer being in contact with the substrate layer and containing a compact of second powder; wherein the compact of the first ...	10/23/2001
5573829	Laminated board having gypsum core and wood veneer lamination with debossed designs A wood veneer laminated gypsum board comprises a gypsum core and lamination f a paper or a paper-like outer layer on both sides, an aluminum backed wood veneer bonded to the paper outer layer, and debossed designs on the wood veneer which penetrates beyond...	11/12/1996
5264057	Process for the production of a flame resistant to nonflammable composite panel and apparatus for carrying out the process A flame resistant to nonflammable composite panel is produced from a nonextrudable core mixture with a pourable, nonflammable filling material and a binder, and on both sides cover strips flexibly bonded to the core. For a continuous production of the com...	11/23/1993
5221386	Cement board having reinforced edges A cement board having bare surfaces and a woven mesh of reinforcing fibers underlying the top, bottom, and longitudinal edge surfaces is made continuously on an improved apparatus which comprises a pair of edger rails which slidably rest on a conveyor bel...	06/22/1993
5113921	Sheet material for masking apparatus An elongate sheet of flexible, fluid impervious material is folded into longitudinally extending pleats and coiled into a roll for use with masking apparatus of either the stationary or the hand held type. The sheet is coiled in a direction for continuous...	05/19/1992
4187275	Method and apparatus for producing shaped glass fiber reinforced cementitious articles A method and apparatus for forming shaped articles from glass fiber reinforced gypsum. An aqueous slurry of gypsum hemi-hydrate, water and glass fibers contains between 22 and 45 parts by weight water, 100 parts by weight gypsum hemi-hydrate and 3 to 10 p...	02/05/1980
4065333	Facing sheet edge trimming Plastic sheet material, laminated to the front face and side edges of wallboard, having excess sheet width at each side edge, is uniformly and rapidly trimmed to a neat skived edge which becomes firmly adhered to the wallboard edge, by abrading through th...	12/27/1977
4057662	Block-resistant gypsum board A predecorated printed paper on the gypsum wallboard with a clear washable coating over the printed paper, and having a thin coating of polyethylene emulsion on the back paper which overcomes the tendency of the coated predecorated paper to stick to the b...	11/08/1977
3964944	Manufacture of cementitious board The invention relates to the manufacture of cementitious board, such as gypsum board, faced with paper or other sheets and having an improved accuracy of edge profile. A sheet to be folded at the lateral edges of the board is scored, and quick-setting adh...	06/22/1976

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Class 156/40 - With bending or folding of facing sheet