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Class Information
Number: 425/376.1
Name: Plastic article or earthenware shaping or treating: apparatus > Stock pressurizing means operably associated with downstream shaping orifice
Description: Apparatus including means defining a shaping orifice (e.g., a nozzle) combined with fluent stock material handling means comprising means ahead of the orifice to increase pressure on the material to force flow through the orifice.










Sub-classes under this class:

Class Number Class Name Patents
425/381.2 Centripetal elastic melt extruder type 46
425/382.3 Including additional rotating means downstream of the primary pressurizing means 281
425/380 Including auxiliary shaping means (e.g., mandrel, etc.) associated with molding orifice 425
425/378.1 Including heating or cooling means 354
425/377 Including product handling means 269
425/382.4 Including restriction upstream of shaping orifice and downstream of primary pressurizing means 281
425/382R Plural orifices 213


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
4174933 Forming an extruded bar out of metal chips Nov. 20, 1979
4174200 Apparatus for the manufacture of a continuous film or web of thermoplastic material Nov. 13, 1979
4168942 Extrusion apparatus and method Sep. 25, 1979
4167384 Filter screen exchanging apparatus for plastic extruder Sep. 11, 1979
4155690 Continuous production of cross-linked polyethylene May. 22, 1979
4142805 Method for processing polymeric material Mar. 6, 1979
4137023 Low energy recovery compounding and fabricating apparatus for plastic materials Jan. 30, 1979
4134335 Waste compacting apparatus Jan. 16, 1979
4128371 Device for pressing out material in the form of a strand Dec. 5, 1978
4124336 Poppet check valve for controlled feeding of blowing agent Nov. 7, 1978
4105728 Spinning method and apparatus Aug. 8, 1978
4101253 Extrusion Jul. 18, 1978
4092388 Apparatus and process for manufacture of variegated soap bars May. 30, 1978
4083666 Cookie press Apr. 11, 1978
4082487 Apparatus for changing screen devices Apr. 4, 1978
4077754 Apparatus for making variegated soap bars or cakes Mar. 7, 1978
4070138 Screen changer apparatus Jan. 24, 1978
4057379 Kneading and extruding apparatus for extrudable material Nov. 8, 1977
4057376 Device for degassing plastic materials Nov. 8, 1977
4053269 Apparatus for forming a composite tape Oct. 11, 1977
4050867 Extrusion head for extruding plastomeric or elastomeric material on filaments Sep. 27, 1977
4028040 Material mixing and compacting apparatus Jun. 7, 1977
4022560 Drying device May. 10, 1977
4017240 Die for extruding sheet material Apr. 12, 1977
4015925 Extrusion equipment and especially die structure for making plastic siding Apr. 5, 1977
4011038 Plate provided with apertures separated from each other by separating ribs for an installation for the manufacture of sticks from dough material Mar. 8, 1977
4008035 Extrusion die Feb. 15, 1977
3990829 Oriented crystallization of polymers Nov. 9, 1976
3989431 Pile extruder Nov. 2, 1976
3988097 Extruder slot die head Oct. 26, 1976
3986477 Wire coating apparatus Oct. 19, 1976
3985484 Method of molding synthetic resins materials through high-pressure fluid cross-linking process and relevant apparatus Oct. 12, 1976
3973890 Adjustable die face pelletizer Aug. 10, 1976
3972665 Molding apparatus with additive metering and mixing means Aug. 3, 1976
3969053 Device for distributing dyestuffs or other additional materials in extruders or the like Jul. 13, 1976
3966381 Extrusion of thermoplastic foam Jun. 29, 1976
3965931 Balanced flow cross-head Jun. 29, 1976
3962967 Horizontal trash compactor Jun. 15, 1976
3954365 Apparatus for the preparation of foamed thermoplastic extruded profiles May. 4, 1976
3947200 Apparatus for producing striated soap bars Mar. 30, 1976
3947172 Apparatus for extruding plastic materials Mar. 30, 1976
3947201 Extruder and roll die apparatus Mar. 30, 1976
3941544 Apparatus for the preparation of foamed thermoplastic extruded profiles Mar. 2, 1976
3938924 Thermoplastic melt apparatus Feb. 17, 1976

1 2 3 4 5 6 7










 
 
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