GB1082538A - Improvements in or relating to cross-heads for extruders - Google Patents
Improvements in or relating to cross-heads for extrudersInfo
- Publication number
- GB1082538A GB1082538A GB46425/64A GB4642564A GB1082538A GB 1082538 A GB1082538 A GB 1082538A GB 46425/64 A GB46425/64 A GB 46425/64A GB 4642564 A GB4642564 A GB 4642564A GB 1082538 A GB1082538 A GB 1082538A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cross
- die
- core tube
- groove
- path
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/34—Cross-head annular extrusion nozzles, i.e. for simultaneously receiving moulding material and the preform to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/06—Rod-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/05—Filamentary, e.g. strands
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/13—Articles with a cross-section varying in the longitudinal direction, e.g. corrugated pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
1,082,538. Extrusion cross-head dies. N. OKAZAKI. Nov. 13, 1964, No. 46425/64. Heading B5A. To obtain a uniformly cross-sectioned tube of synthetic plastic or rubber, or sheathing of the same material for a wire 10, an extrusion crosshead 1 is provided with a rotatable core tube 9 and a stationary sleeve 4 having helical grooves 5, 5<SP>1</SP>, the bottom surfaces of which diverge with respect to the longitudinal axis of the crosshead in a direction towards die 8 such that the difference of flow path across each groove is compensated for. For example, considering groove 5, one path a, b, i, j and f is two turns in length while path c, d, k and l is one and a half turns in length. A single helical groove only may be provided, Fig. 5 (not shown), and an auxiliary screw (20), Fig. 4 (not shown), may be provided on the core tube adjacent the die to assist the feed and allow the cross-head to be emptied of moulding material. In a further embodiment, Figs. 6-8 (not shown), two wires (16, 16<SP>1</SP>) are coated simultaneously and subsequently twisted to form a single strand (19) by rotation of die (7) having apertures (13, 13<SP>1</SP>) and a core tube having bores (11<SP>1</SP>, 11<SP>11</SP>).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB46425/64A GB1082538A (en) | 1964-11-13 | 1964-11-13 | Improvements in or relating to cross-heads for extruders |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB46425/64A GB1082538A (en) | 1964-11-13 | 1964-11-13 | Improvements in or relating to cross-heads for extruders |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1082538A true GB1082538A (en) | 1967-09-06 |
Family
ID=10441222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB46425/64A Expired GB1082538A (en) | 1964-11-13 | 1964-11-13 | Improvements in or relating to cross-heads for extruders |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1082538A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985001244A1 (en) * | 1983-09-23 | 1985-03-28 | A/S So^/Nnichsen Ro^/Rvalseverket | Extruder assembly |
EP0400281A2 (en) * | 1989-05-29 | 1990-12-05 | HERMANN BERSTORFF Maschinenbau GmbH | Device for continuously jacketing cylindrical workpieces with elastic material |
-
1964
- 1964-11-13 GB GB46425/64A patent/GB1082538A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1985001244A1 (en) * | 1983-09-23 | 1985-03-28 | A/S So^/Nnichsen Ro^/Rvalseverket | Extruder assembly |
US4591323A (en) * | 1983-09-23 | 1986-05-27 | A/S Sonnichsen Rorvalseverket | Extruder and calibrating apparatus for making ribbed or grooved pipe |
EP0400281A2 (en) * | 1989-05-29 | 1990-12-05 | HERMANN BERSTORFF Maschinenbau GmbH | Device for continuously jacketing cylindrical workpieces with elastic material |
EP0400281A3 (en) * | 1989-05-29 | 1991-01-30 | HERMANN BERSTORFF Maschinenbau GmbH | Device for continuously jacketing cylindrical workpieces with elastic material |
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