Die for extrusion molding of honeycomb

Details Die for extrusion molding of honeycomb Die for extrusion molding of honeycomb

2006-08-22

2006-08-22

Del Sole, Joseph S. (Department: 1722)

Plastic article or earthenware shaping or treating: apparatus

Stock pressurizing means operably associated with downstream...

Including auxiliary shaping means associated with molding...

C249S134000, C249S114100, C425S461000, C425S467000

Reexamination Certificate

active

07094047

ABSTRACT:
A die for extrusion molding of a honeycomb which comprises a structure provided with a groovy slit (2) formed by cell blocks (3) on a front face thereof, and additionally provided with a puddle inlet, on a back face thereof, communicatively connected with the slit (2), wherein each cell block (3) has a soft film (16) on a hard film (14) formed on outermost surfaces of the slit (2) and puddle inlet fabricated in a cell-block body (10). According to the die for extrusion molding of a honeycomb, a dimensional error of the die is possible to be eliminated, a stable force of extrusion friction is possible to be maintained, both extrusion moldability and abrasion resistance are possible to be excellent, and additionally an adjustment of the die at the time of extrusion molding can be performed easily.

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patent: 5070588 (1991-12-01), Miwa et al.
patent: 6193497 (2001-02-01), Suzuki
patent: 0 276 083 (1988-07-01), None
patent: 0 389 253 (1990-09-01), None
patent: 2001-172766 (2001-06-01), None

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