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

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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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
REHAU AG & CO.REHAU64

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hopperdietzel, Siegfried Selb, DE 15 177

Cited Art

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 8 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 4 1979
4,405,730 Polyvinyl chloride shoe sole composition 5 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 85 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 Cites

Patent Info (Count) # Cites Year
 
TIMBERTECH LIMITED (19)
6,117,924 Extrusion of synthetic wood material 26 1996
5,866,264 Renewable surface for extruded synthetic wood material 30 1996
5,827,462 Balanced cooling of extruded synthetic wood material 27 1996
6,180,257 Compression molding of synthetic wood material 35 1996
6,344,504 Extrusion of synthetic wood material 26 1996
6,011,091 Vinyl based cellulose reinforced composite 30 1997
6,103,791 Vinyl based cellulose reinforced composite 26 1999
6,337,138 Cellulosic, inorganic-filled plastic composite 23 1999
6,248,813 Vinyl based cellulose reinforced composite 24 2000
6,511,757 Compression molding of synthetic wood material 21 2000
6,662,515 Synthetic wood post cap 28 2001
6,632,863 Cellulose/polyolefin composite pellet 18 2001
6,498,205 Extrusion of synthetic wood material using thermoplastic material in powder form 19 2001
6,984,676 Extrusion of synthetic wood material 7 2002
6,958,185 Multilayer synthetic wood component 13 2003
6,971,211 Cellulosic/polymer composite material 16 2004
7,743,567 Fiberglass/cellulosic composite and method for molding 3 2007
8,074,339 Methods of manufacturing a lattice having a distressed appearance 0 2007
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 88 1992
5,441,801 Advanced polymer/wood composite pellet process 75 1993
5,486,553 Advanced polymer/wood composite structural member 96 1994
5,695,874 Advanced polymer/wood composite pellet process 46 1994
5,539,027 Advanced polymer/wood composite structural member 91 1994
5,497,594 Advanced polymer and wood fiber composite structural component 82 1994
5,518,677 Advanced polymer/wood composite pellet process 67 1995
5,827,607 Advanced polymer wood composite 53 1995
5,948,524 Advanced engineering resin and wood fiber composite 48 1996
6,007,656 Fiber reinforced thermoplastic structural member 47 1996
5,932,334 Advanced polymer wood composite 37 1997
6,015,611 Advanced polymer wood composite 40 1998
6,004,668 Advanced polymer wood composite 39 1998
6,280,667 Process for making thermoplastic-biofiber composite materials and articles including a poly(vinylchloride) component 32 1999
6,015,612 Polymer wood composite 43 1999
 
XYLECO, INC. (9)
7,074,918 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 7 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 1 2006
7,537,826 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 0 2006
7,408,056 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 1 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 1 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 16 2001
6,637,213 Cooling of extruded and compression molded materials 6 2002
6,685,858 In-line compounding and extrusion system 12 2002
7,017,352 Cooling of extruded and compression molded materials 5 2002
6,780,359 Synthetic wood composite material and method for molding 18 2003
 
ROYAL MOULDINGS LIMITED (3)
5,847,016 Polymer and wood flour composite extrusion 29 1996
5,951,927 Method of making a polymer and wood flour composite extrusion 17 1998
6,066,680 Extrudable composite of polymer and wood flour 30 1999
 
CERTAINTEED CORPORATION (1)
6,344,268 Foamed polymer-fiber composite 40 1998
 
EXTERIOR PORTFOLIO, LLC (1)
7,186,457 Cellulosic composite component 10 2002
 
FORMTECH ENTERPRISES, INC. (1)
5,858,522 Interfacial blending agent for natural fiber composites 28 1997
 
GREEN BAY DECKING LLC (1)
6,758,996 Cellulose-reinforced thermoplastic composite and methods of making same 15 2001
 
XYLEON, INC. (1)
7,470,463 Cellulosic and lignocellulosic materials and compositions and composites made therefrom 2 2006