GB1331667A - Apparatus for manufacturing tubular film from thermoplastics material - Google Patents
Apparatus for manufacturing tubular film from thermoplastics materialInfo
- Publication number
- GB1331667A GB1331667A GB4695771A GB4695771A GB1331667A GB 1331667 A GB1331667 A GB 1331667A GB 4695771 A GB4695771 A GB 4695771A GB 4695771 A GB4695771 A GB 4695771A GB 1331667 A GB1331667 A GB 1331667A
- Authority
- GB
- United Kingdom
- Prior art keywords
- lip
- gas
- trough
- wall
- liquid
- 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
- B29C48/911—Cooling
- B29C48/9115—Cooling of hollow articles
- B29C48/912—Cooling of hollow articles of tubular films
- B29C48/9125—Cooling of hollow articles of tubular films internally
-
- 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
- B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Centrifugal Separators (AREA)
Abstract
1331667 Making tubular films J THORDARSON 8 Oct 1971 [9 Oct 1970] 46957/71 Heading B5B In the extrusion of thermoplastic material as a tubular film by a process which involves expanding the film by a "bubble" of entrapped gas, the gas is cooled and circulated by apparatus inside the bubble. The apparatus additionally removes condensable impurities from the air. The apparatus consists of an elongated hollow housing 1 with a cooling element 2 past which the gas is blown by means such as a fan (not shown). The gas passes from the cooler down through baffle sets 7 and 8 into the space between walls 9 and 10 to the nozzle 10c. The armulus formed by walls 9, 10 rotate about mast 3, distributing the air evenly, the remainder of the apparatus is stationary, being connected by bearings 5, 6 to the rotating nozzle. Liquid condensing on wall 9 is collected in trough 14 by means of downward projecting lip 9a. Liquid condensing on wall 10 is conveyed up lip 10a into trough 11 by a combination of surface tension and centrifugal forces. Optionally, perforations 10b may be provided in lip 10a in order to facilitate transfer of liquid from the inside of wall 10 to lip 10a. Liquid condensing on cooler 2 collects in trough 15. Optionally pipes 12, 16, 17 may be provided by which condensate may be removed.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO3809/70A NO126423B (en) | 1970-10-09 | 1970-10-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1331667A true GB1331667A (en) | 1973-09-26 |
Family
ID=19879862
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4695771A Expired GB1331667A (en) | 1970-10-09 | 1971-10-08 | Apparatus for manufacturing tubular film from thermoplastics material |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1331667A (en) |
NO (1) | NO126423B (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015051774A1 (en) * | 2013-10-13 | 2015-04-16 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Inner cooling body for a blown film extruder, blown film extruder comprising said inner body and method for operating said blown film extruder |
DE102014017556A1 (en) * | 2014-11-28 | 2016-06-02 | Hosokawa Alpine Aktiengesellschaft | Internal cooling tower for blown film systems |
EP3025845A3 (en) * | 2014-11-28 | 2016-06-15 | HOSOKAWA ALPINE Aktiengesellschaft | Internal cooling tower for a film blowing apparatus |
US11339021B2 (en) | 2018-12-11 | 2022-05-24 | Hosokawa Alpine Aktiengesellschaft | Device for winding and changing the reels of web material as well as a dedicated process |
US11654605B2 (en) | 2018-10-13 | 2023-05-23 | Hosokawa Alpine Aktiengesellschaft | Die head and process to manufacture multilayer tubular film |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US12023838B2 (en) * | 2016-05-09 | 2024-07-02 | Windmöller & Hölscher Kg | System for producing a blown film |
-
1970
- 1970-10-09 NO NO3809/70A patent/NO126423B/no unknown
-
1971
- 1971-10-08 GB GB4695771A patent/GB1331667A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015051774A1 (en) * | 2013-10-13 | 2015-04-16 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Inner cooling body for a blown film extruder, blown film extruder comprising said inner body and method for operating said blown film extruder |
CN105636760A (en) * | 2013-10-13 | 2016-06-01 | 莱芬豪舍机械制造两合公司 | Inner cooling body for a blown film extruder, blown film extruder comprising said inner body and method for operating said blown film extruder |
DE102014017556A1 (en) * | 2014-11-28 | 2016-06-02 | Hosokawa Alpine Aktiengesellschaft | Internal cooling tower for blown film systems |
EP3025845A3 (en) * | 2014-11-28 | 2016-06-15 | HOSOKAWA ALPINE Aktiengesellschaft | Internal cooling tower for a film blowing apparatus |
US10052799B2 (en) | 2014-11-28 | 2018-08-21 | Hosokawa Alpine Aktiengesellschaft | Internal cooling tower for film blowing lines |
DE102014017556B4 (en) * | 2014-11-28 | 2019-05-16 | Hosokawa Alpine Aktiengesellschaft | Internal cooling tower for blown film systems |
US11654605B2 (en) | 2018-10-13 | 2023-05-23 | Hosokawa Alpine Aktiengesellschaft | Die head and process to manufacture multilayer tubular film |
US11339021B2 (en) | 2018-12-11 | 2022-05-24 | Hosokawa Alpine Aktiengesellschaft | Device for winding and changing the reels of web material as well as a dedicated process |
Also Published As
Publication number | Publication date |
---|---|
NO126423B (en) | 1973-02-05 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |