Plastic article or earthenware shaping or treating: apparatus – With apparatus assembly or dismantling means or with idle part – Pivotally joined housings or housing sections enclosing...
Patent
1991-09-11
1993-06-22
Bushey, Scott
Plastic article or earthenware shaping or treating: apparatus
With apparatus assembly or dismantling means or with idle part
Pivotally joined housings or housing sections enclosing...
2641761, 425192R, 425197, 4253781, 4253824, 425461, B29C 4778
Patent
active
052215415
ABSTRACT:
An extruder head made up of several segments including a first section made up of at least two plates bolted together. At least one plate is hingeably mounted to another plate in the first section to provide access to an extrudate passage defined by the plates. Downstream of the first section is a pair of mating blocks bolted to the first section further defining the extrudate passage. Inserts of hardened steel are provided and held by the plates and blocks forming the extruder head and the inserts define parts of the extrudate passage. A cooling liquid chamber is provided in at least one insert to cool the wall forming the passage. Although the passage is continuously restricted in the downstream direction, to increase the pressure of the elastomeric melt, intermittent portions of a slightly greater cross-sectional area are provided to allow expansion and thus intermittent lower pressure of the melt as it passes through the passage.
REFERENCES:
patent: 2092410 (1937-09-01), Wheeler
patent: 2245608 (1941-06-01), Rogers
patent: 2728943 (1956-01-01), Hertz et al.
patent: 2897541 (1959-08-01), Orsini
patent: 3032822 (1962-05-01), Maddock
patent: 3551951 (1971-01-01), Schiesser
patent: 3570062 (1971-03-01), Dukert et al.
patent: 3676535 (1972-07-01), Juel
patent: 3871810 (1975-03-01), Geyer
patent: 4015925 (1977-04-01), Heilmayr
patent: 4164388 (1979-08-01), Inman et al.
patent: 4238538 (1980-12-01), Manwiller
patent: 4280801 (1981-07-01), Wheeler, Jr. et al.
patent: 4826422 (1989-05-01), Hunter
patent: 4892473 (1990-01-01), Elia et al.
Arbour Gaetan
Elia Gerardo P.
Elia Margaret N.
Holm Leonard R.
Lavallee Gilles
Bridgestone/Firestone Inc.
Bushey Scott
Thomas David A.
LandOfFree
Extruder head for elastomeric material does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Extruder head for elastomeric material, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Extruder head for elastomeric material will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1439955