Method and device for producing synthetic panels with undercut, one-piece extensions and a synthetic panel of this type

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6908580
SERIAL NO

09857176

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An apparatus for the continuous and nondestructive production of plastic panels which are provided with undercut anchoring studs, web profiles or other forms of attachments (28) on one or both surfaces comprises a temperature-controlled chill roll (11), which has peripheral cooling bores (15) in the roll body (17). The roll body (17) is formed at the circumference as a polygon with flat supporting surfaces (25), against which the molding/demolding strips (13) are placed or from which they are lifted. The molding/demolding strips (13) are moved by means of piston/cylinder arrangements (16) and piston rods (18). The piston rods (18) move through transverse bores through the roll body (17). The melt is filled into molds (27) of the molding/demolding strips (13) by the counterpressure between the shaping roll (11) and a counterroll (10) and is cooled down. During the filling of the molds (27), the molding/demolding strips (13) are pressed against the flat faces of the roll body (17). After cooling down, the plastic panel (20) produced, with anchoring studs (28) or other forms, is released in a nondestructive manner by opening the molding/demolding strips (13). A plastic panel produced on such a calender (3) has undercut attachments (28), which are formed integrally with the plastic panel (20).

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Alois Gruber GmbHBAD HALL5

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Plammer, Alfred Seewalchen, AT 3 10

Cited Art Landscape

Patent Info (Count) # Cites Year
 
YKK CORPORATION (2)
* 5690875 Method and apparatus for manufacturing surface fastener 10 1995
* 5702797 Molded surface fastener and method for manufacturing the same 16 1996
 
Other [Check patent profile for assignment information] (1)
4957425 Apparatus for producing shaped products 36 1989
 
VELCRO BVBA (1)
* 6162040 Molds for forming touch fasteners 40 1999
 
ERBLOK ASSOCIATES, C/O THOMPSON & THOMPSON, A GENERAL PARTNERSHIP OF VA (1)
* 5057259 Method and apparatus for injection molding continuous products 20 1989
 
SKF Kugellagerfabriken GmbH (2)
* 4362687 Method and apparatus for casting or injection-molding of cages of cylindrical rolling elements 8 1980
* 4383670 Method and apparatus for casting or injection-molding of cages of cylindrical rolling elements 13 1981
 
Talon, Inc. (2)
* 4431399 Continuous injection molding apparatus 5 1980
* 4350656 Method and apparatus for continuous molding of articles 12 1981
 
MONSANTO COMPANY (1)
4323533 Rotary forming of articles 30 1980
 
AGRU/AMERICA, INC. (1)
5167895 Method of manufacturing elastic nub panel produced thereby 7 1990
 
John H. Blanz Company, Inc. (1)
* 4725221 Improved machine for continuously producing an element of a separable fastener 38 1986
 
VELCRO INDUSTRIES B.V. (1)
* 6187247 Injection molding parts with fastener elements 24 1998
* Cited By Examiner

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