US Patent No: 4,851,458

Number of patents in Portfolio can not be more than 2000

Use of cellulose fibers for structurally modifying polyvinyl chloride articles

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Abstract

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Use of cellulose fibers of natural origin as an admixture to polyvinyl chloride is disclosed. Structurally modifying a polyvinyl article by admixing cellulose fibers limits heat shrinkage thereof and results in improved surface characteristics and/or mechanical characteristics. A polyvinyl article is provided which is comprised of polyvinyl chloride and from 1 to 40 wt. %, preferably from 3 to 20 wt. %, cellulose fibers having a fiber thickness ranging from a finite thickness to about 40 .mu.m and a fiber length ranging from twice the fiber thickness to about 400 .mu.m, preferably from about 80 .mu.m to about 400 .mu.m.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
REHAU AG & CO.REHAU66

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hopperdietzel, Siegfried Selb, DE 15 180

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Arjomari-Prioux (2)
4,481,075 Sheet products and preparation process thereof 21 1983
4,612,251 Paper sheet having a very high proportion of latex, process for preparing same and applications thereof particularly as a substitution product for impregnated glass webs 9 1983
 
BP PERFORMANCE POLYMERS INC., ("BP"), 620 FIFTH AVENUE, NEW YORK, NEW YORK, 10020, A CORP OF DE. (2)
4,343,727 Polyvinyl chloride shoe sole molding composition containing cellulosic fibrous flock 5 1979
4,405,730 Polyvinyl chloride shoe sole composition 6 1982
 
Hoechst Aktiengesellschaft (2)
4,336,299 Use of modified cellulose hydrate fibers in the manufacture of bonded non-woven fabrics and products prepared in this manner 5 1979
4,551,294 Molding composition based on vinyl chloride polymers, and process for the manufacture of films from these molding compositions for the production of forgery-proof valuable documents 31 1984
 
FLEXSYS AMERICA L.P. (1)
4,376,144 Treated fibers and bonded composites of cellulose fibers in vinyl chloride polymer characterized by an isocyanate bonding agent 86 1981
 
Mikuni Kogyo Kabushiki Kaisha (1)
4,339,363 Composite material compositions using wastepaper and method of producing same 11 1980
 
Tarkett AB (1)
4,250,064 Plastic formulation reinforced with organic fibers 10 1978

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
CPG INTERNATIONAL LLC (20)
6,117,924 Extrusion of synthetic wood material 28 1996
5,866,264 Renewable surface for extruded synthetic wood material 33 1996
5,827,462 Balanced cooling of extruded synthetic wood material 30 1996
6,180,257 Compression molding of synthetic wood material 37 1996
6,344,504 Extrusion of synthetic wood material 27 1996
6,011,091 Vinyl based cellulose reinforced composite 35 1997
6,103,791 Vinyl based cellulose reinforced composite 29 1999
6,337,138 Cellulosic, inorganic-filled plastic composite 25 1999
6,248,813 Vinyl based cellulose reinforced composite 25 2000
6,511,757 Compression molding of synthetic wood material 25 2000
6,662,515 Synthetic wood post cap 30 2001
6,632,863 Cellulose/polyolefin composite pellet 21 2001
6,498,205 Extrusion of synthetic wood material using thermoplastic material in powder form 23 2001
6,984,676 Extrusion of synthetic wood material 8 2002
6,958,185 Multilayer synthetic wood component 19 2003
6,971,211 Cellulosic/polymer composite material 19 2004
7,743,567 Fiberglass/cellulosic composite and method for molding 4 2007
8,074,339 Methods of manufacturing a lattice having a distressed appearance 0 2007
8,460,797 Capped component and method for forming 0 2009
8,167,275 Rail system and method for assembly 0 2010
 
Andersen Corporation (15)
5,406,768 Advanced polymer and wood fiber composite structural component 89 1992
5,441,801 Advanced polymer/wood composite pellet process 79 1993
5,486,553 Advanced polymer/wood composite structural member 99 1994
5,695,874 Advanced polymer/wood composite pellet process 48 1994
5,539,027 Advanced polymer/wood composite structural member 93 1994
5,497,594 Advanced polymer and wood fiber composite structural component 84 1994
5,518,677 Advanced polymer/wood composite pellet process 68 1995
5,827,607 Advanced polymer wood composite 56 1995
5,948,524 Advanced engineering resin and wood fiber composite 50 1996
6,007,656 Fiber reinforced thermoplastic structural member 51 1996
5,932,334 Advanced polymer wood composite 39 1997
6,015,611 Advanced polymer wood composite 42 1998
6,004,668 Advanced polymer wood composite 41 1998
6,280,667 Process for making thermoplastic-biofiber composite materials and articles including a poly(vinylchloride) component 35 1999
6,015,612 Polymer wood composite 46 1999
 
XYLECO, INC. (9)
7,074,918 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 9 2003
7,307,108 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same 4 2005
7,708,214 Fibrous materials and composites 2 2006
7,537,826 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 1 2006
7,408,056 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 2 2006
7,971,809 Fibrous materials and composites 1 2007
7,709,557 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same 2 2009
7,825,172 Compositions and composites of cellulosic and lignocellulosic materials and resins, and methods of making the same 0 2010
7,980,495 Fibrous materials and composites 1 2010
 
CRANE BUILDING PRODUCTS LLC (5)
6,708,504 Cooling of extruded and compression molded materials 20 2001
6,637,213 Cooling of extruded and compression molded materials 8 2002
6,685,858 In-line compounding and extrusion system 13 2002
7,017,352 Cooling of extruded and compression molded materials 6 2002
6,780,359 Synthetic wood composite material and method for molding 20 2003
 
ROYAL MOULDINGS LIMITED (3)
5,847,016 Polymer and wood flour composite extrusion 33 1996
5,951,927 Method of making a polymer and wood flour composite extrusion 20 1998
6,066,680 Extrudable composite of polymer and wood flour 34 1999
 
CERTAINTEED CORPORATION (1)
6,344,268 Foamed polymer-fiber composite 46 1998
 
EXTERIOR PORTFOLIO, LLC (1)
7,186,457 Cellulosic composite component 13 2002
 
FORMTECH ENTERPRISES, INC. (1)
5,858,522 Interfacial blending agent for natural fiber composites 31 1997
 
GREEN BAY DECKING LLC (1)
6,758,996 Cellulose-reinforced thermoplastic composite and methods of making same 19 2001
 
SMART PLANET TECHNOLOGIES, INC. (1)
8,569,411 Flexible packaging composites 0 2008
 
Xyleon, Inc. (1)
7,470,463 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 2 2006