WO2003066315A1 - Blaskopf zum extrudieren von folien mit spannelementen, die leitungen für kühluft enthalten - Google Patents
Blaskopf zum extrudieren von folien mit spannelementen, die leitungen für kühluft enthaltenInfo
- Publication number
- WO2003066315A1 WO2003066315A1 PCT/EP2003/000564 EP0300564W WO03066315A1 WO 2003066315 A1 WO2003066315 A1 WO 2003066315A1 EP 0300564 W EP0300564 W EP 0300564W WO 03066315 A1 WO03066315 A1 WO 03066315A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fastening means
- tubular film
- blowing head
- head
- components
- Prior art date
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
- B29C48/256—Exchangeable extruder parts
- B29C48/2562—Mounting or handling of the die
-
- 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
-
- 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
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
- B29C48/3363—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a layered die, e.g. stacked discs
Definitions
- Blow head for extruding foils with tensioning elements that contain lines for cooling air.
- the invention relates to a tubular film blowing head (1) for extruding single or multilayer film, which has at least the following features: • a largely annular die gap (11),
- Fastening means which fix at least two components (5, 7, 8, 9) to one another, which jointly delimit areas (14) which conduct molten plastic within the tubular film blow head,
- the extruded tubular films are used, among other things, in the packaging industry.
- Tubular film blow heads of the type mentioned are shown, for example, in EP 0 626 247 A1, US Pat. No. 5,069,612 and in DE 100 01 363 A1.
- plastic melt which is supplied in lines, within the blow head in such a way that it reaches an annular nozzle gap relatively evenly.
- the plastic melt is formed into a film tube.
- at least part of the distribution process of the plastic melt is usually made of plastic melt leading areas, which are delimited by at least two components.
- the aforementioned publications show that the geometrical configuration of these areas can be carried out in a wide variety of forms.
- the object of the present invention is therefore to propose a blow head in which the volume of the blow head is used more efficiently.
- the cooling air is conducted through lines that are central to the blow head.
- Such an arrangement of the air lines prevents the melt from being fed through melt lines, which are often routed centrally in blow heads or at least branch out from a central position, as shown in FIGS. 1 to 5. This problem can be remedied with the acentric arrangement, in particular several fastening means.
- the fastening means advantageously have the shape of a circular cylinder.
- the fastening means in particular screws, systems made of threaded rods and nuts and systems made of screws and nuts can act.
- fastening elements according to the invention are generally flowed through by coolants and are therefore often heated less than the housing of the blow head. You can take advantage of this fact by only loosely locking the fastening elements during assembly. If the blow head is at a higher temperature during operation than the fastening elements, it will expand (with the same or similar expansion coefficient) more than this, so that the fastening elements are stretched out more and, if necessary, develop their full fixing effect. Further advantageous embodiments and exemplary embodiments of the invention result from the further claims, the objective description and the drawings.
- FIG. 1 shows a section through a blow head along the line B-B from FIG
- FIG. 2 shows a section along the line A-A from FIG. 1
- Figure 1 shows a section through an embodiment of a tubular film die 1 according to the invention, the supporting part of which is the housing 2, which in turn consists of the outer nozzle ring 3, the housing ring 4, the housing base plate 5 and the connection plate 6.
- the two mandrels 7 and 8 and the nozzle inner ring 9 are located in the circular cylindrical housing interior.
- the components of the housing 2 and the aforementioned parts 4 to 6 delimit an annular gap 10, through which the plastic melt reaches the nozzle gap 11 and the film tube 12 forms.
- the plastic melt passes through the supply lines 13 into the aforementioned gap 10.
- the supply lines are designed as helical grooves in the mandrels 7 and 8 and the housing base plate 5.
- the helical grooves are each limited by the component 7, 8, 9, which is located above the component 5, 7, 8, in which the grooves are made. Due to the high pressure that prevails in the supply lines during operation, large buoyancy forces act on the mandrels 7, 8 and the inner ring 9 of the nozzle, which must be absorbed by the fastening means 15 a and b.
- the ends of the fastening means are provided with external threads, on each of which a nut 16 is applied.
- the fastening means 15 b contain air supply lines 24 b through which air is led to the cooling lips 17 of the internal air cooling at the inner edge of the film tube 12.
- the discharge of heated air takes place through the standpipe 18 and the fastening elements 15 a, which contain air discharge lines 24 a.
- the advantageous distribution of the plastic melt through branching points 19 which are arranged in the center of the blow head, as can also be seen in FIG.
- the melt is fed to the branching points 19 via the central feed lines 20.
- Figures 3 to 5 show different ways of locking the fasteners 15.
- the lower part of the bore for the fastening elements in the connecting plate 6 is provided with an internal thread 21, into which the external thread 22 of the fastening elements 15 engages.
- the upper ends of the fastening elements 15 are again provided with external threads 22 and nuts 16. It is often advantageous to provide the upper part of the bore for the fastening elements with a thread, and to screw the fastening element into the thread mentioned. However, the graphic representation of this embodiment has been omitted.
- FIG. 5 once again illustrates the fastening of the fastening elements with nuts 16.
- a fastening element 15 each contains a line 24.
- fastening elements have an outlet 24 a and a feed line 24 b contain.
- Other fastening elements can also do without such lines 24.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003221476A AU2003221476A1 (en) | 2002-02-06 | 2003-01-21 | Blowing head for extruding films, comprising clamping elements containing ducts for cooling air |
US10/502,060 US7195471B2 (en) | 2002-02-06 | 2003-01-21 | Blowing head for extruding films, comprising clamping elements containing ducts for cooling air |
EP20030717180 EP1474276B1 (de) | 2002-02-06 | 2003-01-21 | Blaskopf zum extrudieren von folien mit spannelementen, die leitungen für kühlluft enthalten und verfahren zur fixierung der blaskopfeinheit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10204897A DE10204897B4 (de) | 2002-02-06 | 2002-02-06 | Blaskopf zum Extrudieren von Folien mit Spannelementen, die Leitungen für Kühlluft enthalten |
DE10204897.5 | 2002-02-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003066315A1 true WO2003066315A1 (de) | 2003-08-14 |
Family
ID=27588436
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/000564 WO2003066315A1 (de) | 2002-02-06 | 2003-01-21 | Blaskopf zum extrudieren von folien mit spannelementen, die leitungen für kühluft enthalten |
Country Status (5)
Country | Link |
---|---|
US (1) | US7195471B2 (de) |
EP (1) | EP1474276B1 (de) |
AU (1) | AU2003221476A1 (de) |
DE (1) | DE10204897B4 (de) |
WO (1) | WO2003066315A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019001144A1 (de) * | 2019-02-18 | 2020-08-20 | Ulrich Büttel | Blaskopf |
CN113071087A (zh) * | 2021-04-13 | 2021-07-06 | 安徽韵通塑业科技有限公司 | 一种双壁波纹管口模结构 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005006474A1 (de) * | 2005-02-12 | 2006-08-17 | Kiefel Extrusion Gmbh | Verfahren und Vorrichtung zur Herstellung von Blasfolien |
DE102006047996A1 (de) * | 2006-10-09 | 2008-04-10 | Windmöller & Hölscher Kg | Blaskopf mit konzentrischen Wendeln |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US347189A (en) | 1886-08-10 | Cuspidor for railway-coaches | ||
US3471899A (en) * | 1967-03-16 | 1969-10-14 | Cupples Container Co | Extrusion die |
GB1253454A (en) | 1968-02-01 | 1971-11-17 | Ethyl Corp | Die assembly |
US4003972A (en) | 1972-04-14 | 1977-01-18 | Minigrip, Inc. | Method of extruding tubing for fastener bags |
US4069282A (en) | 1975-02-19 | 1978-01-17 | Firma Kohlensaeure-Werke Rudolf Buse Sohn | Process for the uninterrupted manufacture of plastic film tubing |
US4236884A (en) * | 1975-09-05 | 1980-12-02 | Gloucester Engineering Co., Inc. | Internal air cooling of tubular plastic film |
US5069612A (en) | 1990-09-20 | 1991-12-03 | General Electric Corporation | Modular tubular extrusion head |
EP0626247A1 (de) | 1993-05-07 | 1994-11-30 | BATTENFELD GLOUCESTER ENGINEERING Co., Inc. | Im Innern gestapelte Düse für Blasfolien |
US5538411A (en) | 1991-11-14 | 1996-07-23 | Crompton & Knowles Corporation | Spiral fed multi-layer tubular die |
EP0873846A2 (de) | 1997-04-24 | 1998-10-28 | Klaus Reinhold Maschinen- und Gerätebau GmbH | Abzugsvorrichtung für Schlauchbahnen aus Kunststoffolie |
DE10001363A1 (de) | 2000-01-14 | 2001-07-26 | Windmoeller & Hoelscher | Extruderdüsenkopf |
DE10048862C1 (de) | 2000-08-16 | 2001-12-13 | Windmoeller & Hoelscher | Schlauchfolienblaskopf |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US553841A (en) * | 1896-02-04 | Charles w | ||
US3059277A (en) * | 1960-09-30 | 1962-10-23 | Dow Chemical Co | Extrusion die |
BE623883A (de) * | 1961-10-23 | 1900-01-01 | ||
US3186033A (en) * | 1962-10-23 | 1965-06-01 | Nat Distillers Chem Corp | Adjustable air ring |
US3349437A (en) * | 1965-12-08 | 1967-10-31 | Nat Distillers Chem Corp | Rotating die cap for extrusion die |
US3337914A (en) * | 1966-01-03 | 1967-08-29 | Nat Distillers Chem Corp | Stacked extrusion die |
US3422493A (en) * | 1966-08-26 | 1969-01-21 | Nrm Corp | Rotary induction heated extrusion die |
US3539666A (en) * | 1968-06-18 | 1970-11-10 | Grace W R & Co | Method for preparing a nonwoven fabriclike member |
US3599286A (en) * | 1968-11-12 | 1971-08-17 | Norton Co | Thermally insulated extrusion die and method of making |
BE785716A (fr) * | 1971-06-30 | 1973-01-02 | Flexico France Sarl | Procede de fabrication et filiere d'extrusion pour un tube en matiere plastique |
US3932103A (en) * | 1974-01-31 | 1976-01-13 | Reynolds Metals Company | Die for extruding plastic film |
US3902832A (en) * | 1974-05-09 | 1975-09-02 | Gk Systems Inc | Manufacture of blown film |
US4201532A (en) * | 1978-08-02 | 1980-05-06 | Cole Robert J | Extrusion dies of spiral mandrel type |
EP0377059A1 (de) * | 1989-01-02 | 1990-07-11 | Institut Mekhaniki Metallopolimernykh Sistem Akademii Nauk Belorusskoi Ssr | Spritzkopf zur Herstellung einer polymeren Rostschutz-Schlauchfolie |
ITMI20011730A1 (it) | 2000-08-16 | 2003-02-07 | Windmoeller & Hoelscher | Testa soffiante per film tubolare |
-
2002
- 2002-02-06 DE DE10204897A patent/DE10204897B4/de not_active Expired - Lifetime
-
2003
- 2003-01-21 US US10/502,060 patent/US7195471B2/en not_active Expired - Lifetime
- 2003-01-21 EP EP20030717180 patent/EP1474276B1/de not_active Expired - Lifetime
- 2003-01-21 AU AU2003221476A patent/AU2003221476A1/en not_active Abandoned
- 2003-01-21 WO PCT/EP2003/000564 patent/WO2003066315A1/de not_active Application Discontinuation
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US347189A (en) | 1886-08-10 | Cuspidor for railway-coaches | ||
US3471899A (en) * | 1967-03-16 | 1969-10-14 | Cupples Container Co | Extrusion die |
GB1253454A (en) | 1968-02-01 | 1971-11-17 | Ethyl Corp | Die assembly |
US4003972A (en) | 1972-04-14 | 1977-01-18 | Minigrip, Inc. | Method of extruding tubing for fastener bags |
US4069282A (en) | 1975-02-19 | 1978-01-17 | Firma Kohlensaeure-Werke Rudolf Buse Sohn | Process for the uninterrupted manufacture of plastic film tubing |
US4236884A (en) * | 1975-09-05 | 1980-12-02 | Gloucester Engineering Co., Inc. | Internal air cooling of tubular plastic film |
US5069612A (en) | 1990-09-20 | 1991-12-03 | General Electric Corporation | Modular tubular extrusion head |
US5538411A (en) | 1991-11-14 | 1996-07-23 | Crompton & Knowles Corporation | Spiral fed multi-layer tubular die |
EP0626247A1 (de) | 1993-05-07 | 1994-11-30 | BATTENFELD GLOUCESTER ENGINEERING Co., Inc. | Im Innern gestapelte Düse für Blasfolien |
EP0873846A2 (de) | 1997-04-24 | 1998-10-28 | Klaus Reinhold Maschinen- und Gerätebau GmbH | Abzugsvorrichtung für Schlauchbahnen aus Kunststoffolie |
DE10001363A1 (de) | 2000-01-14 | 2001-07-26 | Windmoeller & Hoelscher | Extruderdüsenkopf |
DE10048862C1 (de) | 2000-08-16 | 2001-12-13 | Windmoeller & Hoelscher | Schlauchfolienblaskopf |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019001144A1 (de) * | 2019-02-18 | 2020-08-20 | Ulrich Büttel | Blaskopf |
DE102019001144B4 (de) | 2019-02-18 | 2022-05-19 | Ulrich Büttel | Blaskopf |
CN113071087A (zh) * | 2021-04-13 | 2021-07-06 | 安徽韵通塑业科技有限公司 | 一种双壁波纹管口模结构 |
Also Published As
Publication number | Publication date |
---|---|
DE10204897B4 (de) | 2006-03-23 |
AU2003221476A1 (en) | 2003-09-02 |
DE10204897A1 (de) | 2003-08-14 |
EP1474276A1 (de) | 2004-11-10 |
US20050129797A1 (en) | 2005-06-16 |
EP1474276B1 (de) | 2015-05-06 |
US7195471B2 (en) | 2007-03-27 |
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