Low turbulence die assembly for meltblowing apparatus

Details Low turbulence die assembly for meltblowing apparatus Low turbulence die assembly for meltblowing apparatus

2008-01-08

2008-01-08

Gupta, Yogendra (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Shaping orifice and downstream work contacting gaseous...

Orifice for filaments or fibers

C425S072100, C425S007000

Reexamination Certificate

active

07316552

ABSTRACT:
An apparatus for forming meltblown material from a molten polymer includes a die configured with channels in the tip of the die through which molten polymer is extruded for forming meltblown fibers. Air plates are disposed relative to the die tip to define air channels proximate to the die tip for directing attenuating air against the molten polymer fibers extruded from the tip. The air channels include a zone of convergence adjacent the apex of the die tip at an included angle that is within a range of about 10 degrees to about 20 degrees such that each of the air channels defines a convergence angle with respect to a longitudinal axis of the polymer channels of between about 5 degrees to about 10 degrees.

REFERENCES:
patent: 3825379 (1974-07-01), Lohkamp et al.
patent: 3825380 (1974-07-01), Harding et al.
patent: 3865535 (1975-02-01), Langdon et al.
patent: 3936262 (1976-02-01), Hehl
patent: 4295809 (1981-10-01), Mikami et al.
patent: 4380570 (1983-04-01), Schwarz
patent: 4526733 (1985-07-01), Lau
patent: 4720252 (1988-01-01), Appel et al.
patent: 4826415 (1989-05-01), Mende
patent: 4889476 (1989-12-01), Buehning
patent: 4986743 (1991-01-01), Buehning
patent: 5080569 (1992-01-01), Gubernick et al.
patent: 5087186 (1992-02-01), Buehning
patent: 5098636 (1992-03-01), Balk
patent: 5145689 (1992-09-01), Allen et al.
patent: 5160746 (1992-11-01), Dodge et al.
patent: 5196207 (1993-03-01), Koenig
patent: 5236641 (1993-08-01), Allen et al.
patent: 5248247 (1993-09-01), Rübhausen et al.
patent: 5269670 (1993-12-01), Allen et al.
patent: 5344297 (1994-09-01), Hills
patent: 5421921 (1995-06-01), Gill et al.
patent: 5421941 (1995-06-01), Allen et al.
patent: 5423935 (1995-06-01), Benecke et al.
patent: 5445509 (1995-08-01), Allen et al.
patent: 5458291 (1995-10-01), Brusko et al.
patent: 5476616 (1995-12-01), Schwarz
patent: 5516476 (1996-05-01), Haggard et al.
patent: 5580581 (1996-12-01), Buehning
patent: 5595699 (1997-01-01), Wright et al.
patent: 5605706 (1997-02-01), Allen et al.
patent: 5605720 (1997-02-01), Allen et al.
patent: 5618566 (1997-04-01), Allen et al.
patent: 5632938 (1997-05-01), Buehning, Sr.
patent: 5679042 (1997-10-01), Varona
patent: 5679379 (1997-10-01), Fabbricante et al.
patent: 5725812 (1998-03-01), Choi
patent: 5728219 (1998-03-01), Allen et al.
patent: 5733581 (1998-03-01), Barboza et al.
patent: 5851562 (1998-12-01), Haggard et al.
patent: 5882573 (1999-03-01), Kwok et al.
patent: 5891482 (1999-04-01), Choi
patent: 5902540 (1999-05-01), Kwok
patent: 5904298 (1999-05-01), Kwok et al.
patent: 5976427 (1999-11-01), Choi
patent: 6074597 (2000-06-01), Kwok et al.
patent: 6182732 (2001-02-01), Allen
patent: 6183670 (2001-02-01), Torobin et al.
patent: 6200120 (2001-03-01), Fish et al.
patent: 6210141 (2001-04-01), Allen
patent: 6220843 (2001-04-01), Allen
patent: 6241503 (2001-06-01), Wright et al.
patent: 6296463 (2001-10-01), Allen
patent: 6315806 (2001-11-01), Torobin et al.
patent: 6336801 (2002-01-01), Fish et al.
patent: 6364647 (2002-04-01), Sanborn
patent: 6378784 (2002-04-01), Allen et al.
patent: 6422428 (2002-07-01), Allen et al.
patent: 6422848 (2002-07-01), Allen et al.
patent: 6427745 (2002-08-01), Allen
patent: 6491507 (2002-12-01), Allen
patent: 6502615 (2003-01-01), Allen
patent: 6540831 (2003-04-01), Craine et al.
patent: 6565344 (2003-05-01), Bentley et al.
patent: 6572033 (2003-06-01), Pullagura et al.
patent: 6596205 (2003-07-01), Choi
patent: 2003/0173701 (2003-09-01), Arseneau et al.
patent: 2004/0009251 (2004-01-01), Becker et al.
patent: 0474421 (1992-03-01), None
patent: 0474422 (1992-03-01), None
patent: 0701010 (1996-03-01), None
patent: 0987352 (2000-03-01), None
patent: 0866152 (2002-11-01), None
patent: 1270770 (2003-01-01), None
patent: 0822053 (2003-06-01), None
patent: 54103466 (1979-08-01), None
patent: 0100909 (2001-01-01), None
patent: 0242043 (2002-05-01), None
patent: 2005 068692 (2005-07-01), None
Search Report, Mar. 2, 2006.

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