GB1500944A - Vacuum calibrating device for tubular extrudates of yieldable thermoplastic materials - Google Patents
Vacuum calibrating device for tubular extrudates of yieldable thermoplastic materialsInfo
- Publication number
- GB1500944A GB1500944A GB11890/75A GB1189075A GB1500944A GB 1500944 A GB1500944 A GB 1500944A GB 11890/75 A GB11890/75 A GB 11890/75A GB 1189075 A GB1189075 A GB 1189075A GB 1500944 A GB1500944 A GB 1500944A
- Authority
- GB
- United Kingdom
- Prior art keywords
- extrudate
- inlet
- passage
- sizing
- reduction
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/901—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies
- B29C48/903—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article of hollow bodies externally
-
- 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
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/90—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article
- B29C48/904—Thermal treatment of the stream of extruded material, e.g. cooling with calibration or sizing, i.e. combined with fixing or setting of the final dimensions of the extruded article using dry calibration, i.e. no quenching tank, e.g. with water spray for cooling or lubrication
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/913—Cooling of hollow articles of tubular films externally
-
- 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
- B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
- B29C48/911—Cooling
- B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
1500944 Sizing tubular extrudates MILANI RESINE SpA 21 March 1975 [22 March 1974] 11890/75 Heading B5A A tubular extrudate 3 is cooled in passing through a horizontal sizing die passage 2 against which it is urged and sized by vacuum applied through perforations 15, and the admission of air between the extrudate 3 and the passage 2 which would arise from sagging of the extrudate, is reduced by a template means 17 at the inlet to the passage 2 which, at least at the upper part of the inlet, reduces the size of the inlet and effects contact with the extrudate, the extent of vertical reduction of the inlet being greater at the upper part than any reduction at the lower part of the inlet. In the Fig. 1 embodiment, cooling is effected by water circulating through chambers 5, 7, and the extrudate 3 and sizing passage are circular, and the template means 17 comprises a ring which is eccentrically bolted to the die to effect the greater reduction at the upper part, and which has a radiused edge 18 contacting the extrudate 3. In the Fig. 4 embodiment, the extrudate and sizing die passage are rectangular, and the template means comprises upper and lower adjustably mounted plates 20, 21, the upper plate 20 being convexly curved to the upper side of the extrudate across its width and the lower plate 21 defining a straight edge.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT49556/74A IT1003848B (en) | 1974-03-22 | 1974-03-22 | VACUUM CALIBRATOR FOR EXTRUDED HOLLOW BODIES OF CEDABLE THERMOPLASTIC MATERIALS |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1500944A true GB1500944A (en) | 1978-02-15 |
Family
ID=11271014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB11890/75A Expired GB1500944A (en) | 1974-03-22 | 1975-03-21 | Vacuum calibrating device for tubular extrudates of yieldable thermoplastic materials |
Country Status (5)
Country | Link |
---|---|
BE (1) | BE827028A (en) |
DE (1) | DE2511377A1 (en) |
FR (1) | FR2264647B3 (en) |
GB (1) | GB1500944A (en) |
IT (1) | IT1003848B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2225406A (en) * | 1988-09-13 | 1990-05-30 | North West Water Authority | Methods and apparatus for use in pipe lining. |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0612604B1 (en) * | 1993-02-24 | 1999-04-28 | Ernst Dr. Krüger | Device and process for manufacturing profiles |
-
1974
- 1974-03-22 IT IT49556/74A patent/IT1003848B/en active
-
1975
- 1975-03-15 DE DE19752511377 patent/DE2511377A1/en active Pending
- 1975-03-21 FR FR7508866A patent/FR2264647B3/fr not_active Expired
- 1975-03-21 BE BE154631A patent/BE827028A/en unknown
- 1975-03-21 GB GB11890/75A patent/GB1500944A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2225406A (en) * | 1988-09-13 | 1990-05-30 | North West Water Authority | Methods and apparatus for use in pipe lining. |
GB2225406B (en) * | 1988-09-13 | 1993-05-19 | North West Water Authority | Methods and apparatus for use in pipe lining |
Also Published As
Publication number | Publication date |
---|---|
DE2511377A1 (en) | 1975-09-25 |
FR2264647B3 (en) | 1977-11-25 |
BE827028A (en) | 1975-07-16 |
FR2264647A1 (en) | 1975-10-17 |
IT1003848B (en) | 1976-06-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |