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1. (WO1991017034) VARIABLE OPENING DIE MEANS
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/017034 International Application No.: PCT/US1990/002393
Publication Date: 14.11.1991 International Filing Date: 01.05.1990
Chapter 2 Demand Filed: 25.11.1991
IPC:
B29B 9/06 (2006.01) ,B29C 47/30 (2006.01) ,H04N 9/45 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
B
PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
9
Making granules
02
by dividing preformed material
06
in the form of filamentary material, e.g. combined with extrusion
B PERFORMING OPERATIONS; TRANSPORTING
29
WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
C
SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; AFTER- TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
47
Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
08
Component parts, details or accessories; Auxiliary operations
12
Extrusion nozzles or dies
30
Multi-port extrusion nozzles
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
N
PICTORIAL COMMUNICATION, e.g. TELEVISION
9
Details of colour television systems
44
Colour synchronisation
45
Generation or recovery of colour sub-carriers
Applicants:
EXXON CHEMICAL PATENTS INC. [US/US]; 1900 East Linden Avenue Linden, NJ 07036, US
Inventors:
DUGAS, Michael, John; US
Agent:
COHEN, Harvey, L.; Exxon Chemical Company P.O. Box 710 1900 East Linden Avenue Linden, NJ 07036, US
SCHNEIDER, John, E.; Exxon Chemical Company P.O. Box 710 1900 East Linden Avenue Linden, NJ 07036, US
Priority Data:
Title (EN) VARIABLE OPENING DIE MEANS
(FR) FILIERE A OUVERTURE VARIABLE
Abstract:
(EN) A variable opening extruder die means for utilization with a rubber drying extruder includes a housing (12) having a die means passage formed therein for receiving a cylindrical die rod. An inlet chamber is formed in the housing transverse to and upstream of the die means passage for receiving rubber extrudate material. At least one channel (32, 34) is formed in the housing to provide communication from the inlet chamber through the die means passage and thence to a cutter means (40). The die rod (46) is provided with at least one plurality of vertically arranged extrusion orifices (54, 58) which, when the die rod (46) is disposed in the die means passage, are adapted to be aligned longitudinally with the channel. The extrudate material is thereby received by the inlet chamber, extruded through the aligned extrusion orifices (54, 58), and presented to the cutter means (40), which shears off the material to form pellets. The die rod (46) is movable axially within the die means passage, by mechanical, hydraulic or electrical means, for purposes of varying the number of extrusion orifices (54, 58) which are in alignment with the channel and, hence, the number of orifices through which the material is extruded.
(FR) Filière d'extrudense à ouverture variable destinée à s'utiliser avec une extrudense à séchage de caoutchouc et comprenant un logement (12) dans lequel est formé un passage destiné à recevoir une tige cylindrique de filière. Une chambre d'entrée est ménagée dans le logement transversalement audit passage et en amont de celui-ci pour recevoir un extrudat de caoutchouc. Au moins une gorge (32, 34) est formée dans le logement pour former une communication entre la chambre d'entrée et un dispositif coupeur (40) par l'intermédiaire dudit passage. La tige de filière (46) est munie d'au moins une pluralité d'orifices d'extrusion verticaux (54, 58) qui sont aptes, lorsque la tige de filière (46) est disposée dans le passage, à s'aligner dans le sens longitudinal avec la gorge. Ainsi, l'extrudat est reçu par la chambre d'entrée, est extrudé par les orifices d'extrusion alignés (54, 58), puis se présente au dispositif coupeur (40) qui le cisaille pour former des préformes. La tige de filière (46) peut se déplacer de manière axiale à l'intérieur du passage par des moyens mécaniques, hydrauliques ou électriques afin de modifier le nombre d'orifices d'extrusion (54, 58) alignés avec la gorge, et donc le nombre d'orifices employés lors de l'extrusion de l'extrudat.
Designated States: AU, BR, CA, JP, KR, SU
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0528790JPH05505981CA2081772DE000069011536AU1990056428