EP1539466A1 - Verfahren zur herstellung selbstreinigender folien im blasverfahren - Google Patents
Verfahren zur herstellung selbstreinigender folien im blasverfahrenInfo
- Publication number
- EP1539466A1 EP1539466A1 EP03794914A EP03794914A EP1539466A1 EP 1539466 A1 EP1539466 A1 EP 1539466A1 EP 03794914 A EP03794914 A EP 03794914A EP 03794914 A EP03794914 A EP 03794914A EP 1539466 A1 EP1539466 A1 EP 1539466A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film tube
- factor
- ratio
- film
- self
- 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.)
- Withdrawn
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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/58—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres
- B29C70/64—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising fillers only, e.g. particles, powder, beads, flakes, spheres the filler influencing the surface characteristics of the material, e.g. by concentrating near the surface or by incorporating in the surface by force
-
- 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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0018—Combinations of extrusion moulding with other shaping operations combined with shaping by orienting, stretching or shrinking, e.g. film blowing
Definitions
- the invention relates to a method for producing blown film tubes which are at least equipped with a self-cleaning surface.
- Processes for producing blown film tubes are generally known.
- a plastic melt is first formed in an extruder, which is then pressed into a blow head, which has an annular outlet gap.
- the film tube is extruded from this annular gap and then expanded by an inflation factor by producing a corresponding pressure in the interior of the tube that is higher than the external pressure.
- the film tube then runs through a squeezing device.
- the film tube is stretched in its axial direction by a longitudinal stretch factor.
- the object of the present invention is therefore to propose a method which already equips the film tube with at least one self-cleaning surface in the extrusion process.
- the at least one surface is provided with elevations, in that the volumes of material required to form the elevations are either admixed from the annular gap before the plastic melt is extruded or are distributed on the surface directly after the extrusion.
- the material volumes required to generate the elevations are part of another melt.
- nanoparticles In a preferred embodiment of the invention, the use of nanoparticles is provided.
- the distances between the elevations in the axial and / or radial direction can be exceeded.
- the ratio between the inflation factor and the longitudinal stretching factor is greater than 1/4.
- the ratio between the inflation factor and the longitudinal stretching factor is greater than 1/3.
- a ratio between the inflation factor and the longitudinal stretching factor is advantageously chosen to be greater than.
- the ratio between the inflation factor and the longitudinal stretching factor is greater than 10/11.
- a further preferred embodiment of the invention includes a ratio between the inflation factor and the longitudinal stretching factor of 1/1.
- Fig. 1 side view of a device for producing a
- Foil tube Fig. 2 Detail from an unstretched foil tube Fig. 3 Detail from a foil tube stretched in the z direction.
- Fig. 4 detail from a stretched in the r and z directions
- the film blow head 2 is fed via a screw conveyor 1, the material to be extruded, which is filled in via a hopper 6.
- the screw conveyor 1 is driven by a motor 7.
- the material is melted in the film die head 2 in a manner not shown and pressed into an annular gap.
- the film tube 3 is extruded from this annular gap.
- the film tube 3 has a radius Ri, which is essentially is identical to the radius of the annular gap.
- the extrusion speed is labeled Vi.
- the blown film 3 is expanded to a radius R 2 in the further course, the imaginary central axis 5 of the film tube 3 being retained.
- the ratio of the radius R 2 to the radius R is referred to as the inflation factor FR.
- the film tube 3 passes through a squeezing device 5, which consists of two squeezing rollers, between which the film runs. Of this pair of squeeze rollers, only the front squeeze roller 4 is visible.
- the peripheral speed of the squeeze rollers V 2 can, however, be chosen differently than the extrusion speed Vi. As a result, the film tube is stretched (V 2 > Vi).
- the conveying speed of the film tube is also V 2 .
- Extrusion speed Vi is called the longitudinal stretch factor FZ.
- the longitudinal stretching factor FZ is set by the choice of the peripheral speed of the squeeze rolls.
- the inflation factor is set by selecting the internal pressure.
- FIG. 2 shows a section of an unstretched film tube 12. The distances between the particles 10 forming the elevations are constant both in the direction r and in the direction z.
- the longitudinal stretching factor FZ has been set greater than the inflation factor FR, so that the distance between the particles 10 in the z direction is greater than in the r direction.
- the result is a film section 11 that is more stretched in the axial direction.
- 4 shows a uniformly stretched film section 13, for the formation of which the longitudinal stretch factor FZ and the inflation factor FR P have been chosen to be approximately the same size.
- the distances between the particles 10 are again the same size in the direction r and in the direction z, but are significantly increased compared to the undrawn film section 12 shown in FIG. 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10242174 | 2002-09-10 | ||
DE10242174A DE10242174B4 (de) | 2002-09-10 | 2002-09-10 | Verfahren zur Herstellung selbstreinigender Folien im Blasverfahren |
PCT/EP2003/009283 WO2004024427A1 (de) | 2002-09-10 | 2003-08-21 | Verfahren zur herstellung selbstreinigender folien im blasverfahren |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1539466A1 true EP1539466A1 (de) | 2005-06-15 |
Family
ID=31724649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03794914A Withdrawn EP1539466A1 (de) | 2002-09-10 | 2003-08-21 | Verfahren zur herstellung selbstreinigender folien im blasverfahren |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050263940A1 (de) |
EP (1) | EP1539466A1 (de) |
AU (1) | AU2003260443A1 (de) |
DE (1) | DE10242174B4 (de) |
WO (1) | WO2004024427A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012015462A1 (de) | 2012-08-07 | 2014-02-13 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Blasfolienanlage, Verfahren zum Herstellen einer Blasfolienbahn und damit hergestellte Folie |
ES2899747T3 (es) | 2013-10-15 | 2022-03-14 | Reifenhaeuser Masch | Procedimiento para producir una banda de película soplada, así como línea de película soplada |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1629253A1 (de) * | 1951-01-28 | 1971-03-25 | Lissmann Alkor Werk | Verfahren zur Nachbehandlung von Blasfolien |
NL265442A (de) * | 1960-06-01 | 1900-01-01 | ||
DE1943101A1 (de) * | 1969-08-25 | 1971-03-11 | Josef Schmitter Kg Diesel Und | Verpackungsmaterial sowie Verfahren und Vorrichtung zu seiner Herstellung |
US3709642A (en) * | 1970-12-02 | 1973-01-09 | F Stannard | Tube coating film and apparatus |
DE3638307A1 (de) * | 1986-11-10 | 1988-05-19 | Volker Ludwig | Vorrichtung zum auftragen von fluessigen, pastoesen oder plastischen substanzen auf ein substrat |
JPH07328532A (ja) * | 1994-06-07 | 1995-12-19 | Sekisui Chem Co Ltd | 撥水性被膜 |
CZ295850B6 (cs) * | 1994-07-29 | 2005-11-16 | Wilhelm Prof. Dr. Barthlott | Samočisticí povrchy předmětů, způsob jejich výroby a jejich použití |
EP0868277B1 (de) * | 1995-12-08 | 2000-01-12 | Minnesota Mining And Manufacturing Company | Verfahren und vorrichtung zum herstellen einer folie mit körnigem material darin |
DE19847845A1 (de) * | 1998-10-16 | 2000-04-27 | Wolff Walsrode Ag | Hochglänzende flexible mehrschichtige Folie mit Außenschicht aus Polyamid enthaltend nanodispersen Füllstoff |
DE19935117B4 (de) * | 1999-07-27 | 2004-11-25 | Windmöller & Hölscher Kg | Vorrichtung zum Aufbringen von formatmäßigen Klebstoffaufträgen auf eine Übertragungswalze |
DE19953707B4 (de) * | 1999-11-08 | 2007-12-27 | 4P Folie Forchheim Gmbh | Verfahren zur Herstellung einer Kunststoff-Folie |
US6407155B1 (en) * | 2000-03-01 | 2002-06-18 | Amcol International Corporation | Intercalates formed via coupling agent-reaction and onium ion-intercalation pre-treatment of layered material for polymer intercalation |
-
2002
- 2002-09-10 DE DE10242174A patent/DE10242174B4/de not_active Expired - Fee Related
-
2003
- 2003-08-21 EP EP03794914A patent/EP1539466A1/de not_active Withdrawn
- 2003-08-21 AU AU2003260443A patent/AU2003260443A1/en not_active Abandoned
- 2003-08-21 US US10/524,502 patent/US20050263940A1/en not_active Abandoned
- 2003-08-21 WO PCT/EP2003/009283 patent/WO2004024427A1/de not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO2004024427A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2004024427A1 (de) | 2004-03-25 |
DE10242174B4 (de) | 2005-01-27 |
AU2003260443A1 (en) | 2004-04-30 |
US20050263940A1 (en) | 2005-12-01 |
DE10242174A1 (de) | 2004-03-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20050411 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK |
|
DAX | Request for extension of the european patent (deleted) | ||
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: SENSEN, KLEMENS Inventor name: BACKMANN, MARTIN |
|
17Q | First examination report despatched |
Effective date: 20101217 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20150226 |