Process for the production of alveolar modules

Details Process for the production of alveolar modules Process for the production of alveolar modules

1980-08-26

1982-07-06

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Of varying cross-sectional area or with intermittent...

15624413, 264565, 264177R, 425132, 425381, 425461, 425465, B29D 2304

Patent

active

043382738

ABSTRACT:
Process for the production of alveolar modules comprising rows of parallel channels, certain of which issue onto the sidewalls of the module, the process consisting of producing the module by extrusion using at least two independent systems each producing rows of identical channels, whereby the formation of one of the systems is interrupted when the row of channels being produced is to issue onto the sidewalls of the module.
The apparatus for performing this process comprises a first extrusion system incorporating first extrusion material supply means and a first spinneret complementary to the cross-section of the rows of channels issuing onto the sidewalls of the module and a second extrusion system incorporating second extrusion material supply means and a second spinneret complementary to the cross-section of the other rows of channels, the first and second supply means being controlled independently of one another.

REFERENCES:
patent: 3380128 (1968-04-01), Cremer et al.
patent: 3473986 (1969-10-01), Hureau
patent: 3559252 (1971-02-01), Schmidt et al.
patent: 3790654 (1974-02-01), Bagley
patent: 3824196 (1974-07-01), Benbow et al.
patent: 3825641 (1974-07-01), Barnett
patent: 3887741 (1975-06-01), Dwyer
patent: 3983283 (1976-09-01), Bagley
patent: 4168944 (1979-09-01), Morikawa et al.

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