Material and process for manufacturing plastic parts

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6410141
SERIAL NO

09397592

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Spherical particles having a diameter between 0.007' and 0.040' are formed from melt extruded thermo-plastic material suitable for casting on a heated mold surface and melting thereon to form a thin layer of material having a nominal thickness of 0.040' that is cooled and removed from the mold surface as a part having a porosity less than a visually observable threshold. The process includes the steps of providing microspheres formed of blended and melt extruded thermo-plastic, plasticizers and pigment additives that constitute less than 5% by weight of the blend and shaped as a smooth round spherical particle; providing a heated casting surface and distributing a predetermined charge of such microspheres against the heated casting surface; melting the microspheres as a layer of thermoplastic material having a porosity less than 0.003 inches and thereafter cooling and removing the non-porous layer from the casting surface.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
BAYER MATERIALSCIENCE LLCPITTSBURGH, PA53

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Grimmer, Robert A Berwick, ME 13 171

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BAYER MATERIALSCIENCE LLC (1)
* 5998030 Material for manufacturing plastic parts 7 1997
 
GALA INDUSTRIES, INC. (12)
4447325 Vertical pre-dewatering screen 11 1982
4565015 Centrifugal pellet dryer 28 1983
4500271 Underwater pelletizer with adjustable blade assembly 42 1983
4621996 Removable die center for extrusion dies 32 1985
4728276 Underwater pelletizer 57 1986
4888990 Sight glass apparatus 25 1988
4896435 Replaceable wear parts for centrifugal pellet dryers 23 1988
5059103 Underwater pelletizer 71 1990
5403176 Tapered insert die plate for underwater pelletizers 23 1991
5265347 Centrifugal pellet dryer 31 1992
5624688 Self-aligning cutter hub 25 1995
5638606 Spider and lifter assembly for centrifugal pellet dryer 25 1996
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL AUTOMOTIVE COMPONENTS GROUP NORTH AMERICA, INC. (1)
* 2005/0272,330 Method for embedding a distinguishing aesthetic and/or functional surface feature into a panel surface 1 2004
 
TOYOTA MOTOR CORPORATION (1)
6981862 Slush molding machine 0 2003
 
Chroma Corporation (2)
* 6682685 Method of rotational molding using a resin blend 1 2000
6833410 Method of rotational molding using a resin blend and the resulting molded objects 4 2002
 
COLLINS & AIKMAN PRODUCTS CO. (1)
* 2005/0064,178 Cloth texture cover material 5 2004
 
Centro, Inc. (4)
8597747 Multi-layer rotationally molded low permeation vessels and method for manufacture therof 1 2007
* 2008/0145,582 Multi-layer rotationally molded low permeation vessels and method for manufacture thereof 5 2007
8721951 Multi-layer rotationally molded low permeation vessels and method for manufacture thereof 1 2011
8911842 Multi-layer rotationally molded low permeation vessels and method for manufacture thereof 0 2013
 
LG CHEM, LTD. (2)
7744946 Organic siloxane resins and insulating film using the same 0 2004
* 2006/0141,163 Organic siloxane resins and insulating film using the same 5 2004
* Cited By Examiner