US20060027942A1 - Method for the preparation of film webs - Google Patents
Method for the preparation of film webs Download PDFInfo
- Publication number
- US20060027942A1 US20060027942A1 US10/524,558 US52455805A US2006027942A1 US 20060027942 A1 US20060027942 A1 US 20060027942A1 US 52455805 A US52455805 A US 52455805A US 2006027942 A1 US2006027942 A1 US 2006027942A1
- Authority
- US
- United States
- Prior art keywords
- film tube
- reversing
- fact
- sheets
- accordance
- 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.)
- Abandoned
Links
Images
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
- B29C48/001—Combinations of extrusion moulding with other shaping operations
- B29C48/0022—Combinations of extrusion moulding with other shaping operations combined with cutting
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0063—Cutting longitudinally
-
- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
-
- 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
-
- 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
- B29C48/0019—Combinations of extrusion moulding with other shaping operations combined with shaping by flattening, folding or bending
-
- 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
- B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
-
- 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
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0097—Glues or adhesives, e.g. hot melts or thermofusible adhesives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/256—Sheets, plates, blanks or films
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/25—Solid
- B29K2105/253—Preform
- B29K2105/258—Tubular
Definitions
- the invention concerns a process for the preparation of sheets, that contains the following characteristics of the process:
- Processes of this kind are used usually in connection with tubular film extrusion plants. Often a film tube is extruded, laid flat, squeezed and subsequently fed to a winding equipment. It is particularly mentionable that the tubular film sheet usually runs through a so-called reversing device after the squeezing.
- the task of the present invention is to suggest a process that makes trimming sections redundant and contains the costs of the device.
- the aforesaid cut-off device can cut the film tube while air is still present in the film bubble, so that no damage of the interior surface of the film tube occurs when the blade cuts through the film and interpositions in the internal space of the film tube.
- the sticky film layer forms the outer circumference of the extruded film tube. In this way the sticking of both the sheets is avoided particularly during their common transport through the reversing device.
- FIG. 1 A complete view of a device in which the film is cut before it reaches the squeezing device.
- FIG. 2 A side view of this device
- FIG. 3 A side view of a device in accordance with the invention.
- FIGS. 1 and 2 illustrate a device that among other things has a flattening device 2 , a cut-off device 4 and a squeezing device 3 . Since the cut-off device 4 is illustrated in front of the squeezing device 3 the film can be cut before the due reversing process.
- the film tube 1 that is extruded from a tubular film extrusion unit usually has a circular profile.
- a flattening device 2 is attached in the transfer direction z. This flattening device 2 compresses the profile successively from two opposite sides. Behind the flattening device 2 the film tube 1 is led through a jamezing device 6 .
- the associated pre-nip rollers 16 and 26 are distanced from one another such that the straight sides of the film tube 1 do not lie on each other yet. An air cushion remains in the film tube 1 through the squeezing process that is not yet complete.
- the figure also illustrates an attachment of two cut-off devices 4 , 5 . These cut-off devices 4 , 5 each contain a blade 8 .
- the blades 8 are attached to the machine frame in a manner that is not illustrated more elaborately in the figure. These blades 8 are arranged such that they slit open the film tube 1 at its end roundings.
- the sheets 7 , 17 resulting from the slitting run through the squeezing device 3 that consist of two nip rollers 13 , 23 .
- This device serves to press both the sheets 7 , 17 flatly on each other and thus prevent the inclusion of air between both the sheets 7 , 17 .
- the sheets 7 , 17 are illustrated in FIG. 1 as diverging from each other. But when they are fed to the reversing device they lie flat on each other as illustrated in FIG. 3 .
- a suitable reversing device is described in detail in e.g. the published documents DE 100 40 055 A1.
- the common leading of both the films lying on each other into a reversing device is basically also possible in another reversing device.
- FIG. 2 The side view of the device in accordance with the invention illustrated in FIG. 2 clarifies the lay-flat process of the film tube in the flattening device 2 of which only the two sides of the flattening plates 12 , 22 can be seen. It can be clearly seen that the connecting pre-nip rollers 16 , 26 have a fixed distance between each other. This distance is selected among other things depending on the operating parameters such that one more air cushion exists is inside the film tube at the height (level) of the cut-off device 4 . Due to the air cushion the parts of the film tube 1 that form the sheets 7 , 17 after the slitting have a somewhat larger distance between each other than while running through the squeezing device.
- the nip rollers 13 , 23 prevent air from escaping through the squeezing device 3 . In this manner the film tube can also be slitted laterally without the risk of damaging very thin or sticky sheets 7 , 17 from contacting the blades 8 .
- FIG. 3 illustrates once again the device illustrated in FIG. 2 whereby a reversing device 100 is depicted.
- the sheets 1 , 17 After the sheets 1 , 17 have run through the squeezing device 3 they run together past the lead rollers 101 , the first deflecting roller 102 , the first air turning bar 103 , the second deflecting roller 104 and the second air turning bar 105 .
- the sheets 7 , 17 reach the outfeed roller 106 , which is a stationary roller that does not participate in the reversing process.
- the sheets 7 , 17 are fed to further processing devices or storage devices (not illustrated in the figure).
- the distance between the sheets 7 , 17 from the squeezing device is illustrated as rather large in order to clarify that they are two sheets. During the winding process of the sheets, they can be wound up individually or together.
- FIG. 3 illustrates only the basic layout of a very advanced reversing device whereby the attachment of the sketched film lead elements 101 to 105 and also the actual reversing process that happens through reversing movements of the rollers and bars 103 to 105 around a vertical axis, is not illustrated.
- the process in accordance with the invention however encompasses all reversing processes.
- reversing devices whereby one turning bar and one deflecting roller form a functional pair.
- one deflecting roller and one turning bar carry out a reversing movement that takes place in relation to an axis that runs orthogonal to the rotational position of the deflecting roller around its axis of main symmetry. By all rules this axis is vertical and aligned with it in the main conveying direction of the film.
- Reversing devices with one, two or even three functional pairs are known. The word functional pair and its meaning for the described reversing devices are explained in the application DE 100 40 055.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Superconductors And Manufacturing Methods Therefor (AREA)
- Bridges Or Land Bridges (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
Abstract
A device and a process for the preparation of sheets (7, 17) are specified. The following work steps are involved in the preparation of the sheets:
-
- extruding a film tube (1)
- laying the film tube flat and squeezing it (1)
- reversing the film tube (1)
- cutting the extruded film tube (1) In addition the invention contains following new characteristics:
- the film tube (1) is cut before the squeezing follows and
- at least one resulting sheet (7, 17) runs through (1) only one reversing device (100) before it is fed to a stationary processing device or storage device.
Description
- The invention concerns a process for the preparation of sheets, that contains the following characteristics of the process:
-
- extruding a film tube
- laying the film tube flat and squeezing it
- reversing the film tube
- cutting the extruded film tube
- Processes of this kind are used usually in connection with tubular film extrusion plants. Often a film tube is extruded, laid flat, squeezed and subsequently fed to a winding equipment. It is particularly mentionable that the tubular film sheet usually runs through a so-called reversing device after the squeezing.
- All afore-mentioned functional units are known in published form. Thus e.g. the
DE 100 40 055 lays claim to such a reversing device and also shows the associated squeezing and lay-flat (flattening) devices. - In order to transform the film tube into film sheets one uses different types of cut-off devices that are attached to the winding equipment and transform the tubes into film sheets immediately before the beginning of the winding process. Usually for this purpose trimming sections are arranged at both the edges of the collapsed film tube. This process however results in a lot of wastage. Since modern standard procedures however allow for an exact adjustment of the diameter of the extruded tubular film and the breadth of the collapsed film tube, in many cases a trimming section is not used. Instead of that cleavers are attached to the winding equipments that slit open the collapsed tubular sheet directly at its edges and thus avoid unnecessary wastage.
- This type of the production of sheets from film tubes is however not suited for thin sensitive or sticky films. These films are affected by the action of the cleaver on the collapsed film tube. Films of the aforementioned type are thus still prepared with the help of trimming sections that are put on the film after the film has run through the reversing device.
- Therefore the task of the present invention is to suggest a process that makes trimming sections redundant and contains the costs of the device.
- The task is solved by the fact
-
- that the film tube is cut in the conveying direction of the film tube (z) before the squeezing takes place and
- that at least one resulting sheet runs through only one reversing device before it is fed to a stationary processing device or storage device.
- Through this measure the aforesaid cut-off device can cut the film tube while air is still present in the film bubble, so that no damage of the interior surface of the film tube occurs when the blade cuts through the film and interpositions in the internal space of the film tube.
- Further preferential design forms of the process for the production of sheets have a reversing device that reverses the sheets that result from the cutting process, as they lie flat on each other.
- In the production of bonding films it is particularly advantageous if the sticky film layer forms the outer circumference of the extruded film tube. In this way the sticking of both the sheets is avoided particularly during their common transport through the reversing device.
- Further design forms of the invention are based on the drawings and the graphic description.
- The individual figures illustrate:
-
FIG. 1 A complete view of a device in which the film is cut before it reaches the squeezing device. -
FIG. 2 A side view of this device -
FIG. 3 A side view of a device in accordance with the invention. - The
FIGS. 1 and 2 illustrate a device that among other things has aflattening device 2, a cut-offdevice 4 and asqueezing device 3. Since the cut-offdevice 4 is illustrated in front of thesqueezing device 3 the film can be cut before the due reversing process. In the conveying direction z the development of the tube is described as follows: Thefilm tube 1 that is extruded from a tubular film extrusion unit (not illustrated in the figure) usually has a circular profile. Aflattening device 2 is attached in the transfer direction z. Thisflattening device 2 compresses the profile successively from two opposite sides. Behind theflattening device 2 thefilm tube 1 is led through apresqueezing device 6. The associated pre-niprollers film tube 1 do not lie on each other yet. An air cushion remains in thefilm tube 1 through the squeezing process that is not yet complete. The figure also illustrates an attachment of two cut-offdevices devices blade 8. Theblades 8 are attached to the machine frame in a manner that is not illustrated more elaborately in the figure. Theseblades 8 are arranged such that they slit open thefilm tube 1 at its end roundings. In the further course of the process thesheets squeezing device 3 that consist of twonip rollers sheets sheets sheets FIG. 1 as diverging from each other. But when they are fed to the reversing device they lie flat on each other as illustrated inFIG. 3 . - A suitable reversing device is described in detail in e.g. the published
documents DE 100 40 055 A1. The common leading of both the films lying on each other into a reversing device is basically also possible in another reversing device. - The side view of the device in accordance with the invention illustrated in
FIG. 2 clarifies the lay-flat process of the film tube in theflattening device 2 of which only the two sides of theflattening plates rollers device 4. Due to the air cushion the parts of thefilm tube 1 that form thesheets nip rollers squeezing device 3. In this manner the film tube can also be slitted laterally without the risk of damaging very thin orsticky sheets blades 8. - The devices illustrated in the figures disclose a particularly advantageous method to cut the
film tube 1 before reaching thesqueezing device 3. However it is also possible to cut the film tube before thesqueezing device 3 without providing apresqueezing device 6.FIG. 3 illustrates once again the device illustrated inFIG. 2 whereby areversing device 100 is depicted. After thesheets squeezing device 3 they run together past thelead rollers 101, thefirst deflecting roller 102, the firstair turning bar 103, the seconddeflecting roller 104 and the secondair turning bar 105. Finally thesheets roller 106, which is a stationary roller that does not participate in the reversing process. Subsequently thesheets sheets - At this juncture it should be mentioned once again that
FIG. 3 illustrates only the basic layout of a very advanced reversing device whereby the attachment of the sketchedfilm lead elements 101 to 105 and also the actual reversing process that happens through reversing movements of the rollers andbars 103 to 105 around a vertical axis, is not illustrated. The process in accordance with the invention however encompasses all reversing processes. - Moreover it must be emphasized once again that reversing devices with differing numbers on deflecting
rollers DE 100 40 055, DE 43 03 952 or EP 0 873 845. - Particularly advantageous are reversing devices whereby one turning bar and one deflecting roller form a functional pair. In such functional pairs one deflecting roller and one turning bar carry out a reversing movement that takes place in relation to an axis that runs orthogonal to the rotational position of the deflecting roller around its axis of main symmetry. By all rules this axis is vertical and aligned with it in the main conveying direction of the film. Reversing devices with one, two or even three functional pairs are known. The word functional pair and its meaning for the described reversing devices are explained in the
application DE 100 40 055.List of reference symbols 1 Film tube 2 Flattening (lay-flat) device 3 Squeezing device 4 Cut- off device 5 Cut- off device 6 Presqueeze device 7 Sheet 8 blade 9 Static air cushion 10 Arrow in the conveying direction of the film tube 11 12 Side bar 13 nip roller 14 15 16 Pre-nip roller 17 Sheet 18 19 20 21 22 23 nip roller 24 25 26 Pre-nip roller 100-106 Film leading elements z Conveying direction of the film tube
Claims (11)
1. Process for the preparation of sheets (7, 17) that contains the following characteristics of the process:
extruding a film tube (1)
laying the film tube flat and squeezing it
reversing the film tube
cutting the extruded film tube (1) characterized by the fact
that the film tube is cut in the conveying direction of the film tube (z) before the squeezing (3) takes place and
that at least one resulting sheet (1) runs through only one reversing device (100) before it is fed to a stationary further processing device or storage device.
2. Process in accordance with claim 1 characterized by the fact that parts of the surfaces of at least one sheet (7, 17) come into contact during the reversing process.
3. Process in accordance with claim 2 characterized by the fact that the surfaces that come into contact with each other are components of the tubular sheet (7, 17) that formed the interior surfaces of the film tube (1).
4. Process in accordance with claim 1 characterized by the fact that sheets (7, 17) are prepared with at least one sticky surface in that a film tube (1) is processed with at least one sticky peripheral surface.
5. Process in accordance with claim 3 characterized by the fact that a film tube (1) is processed that has a sticky external surface and that while reversing only those surfaces of the cut film tubes (1) come into contact that had formed the internal surface of the film tube (1) before.
6. Process for the preparation of sheets (7, 17) that contains the following characteristics:
a means for the extrusion of a film tube (1)
a flattening device (2) and a squeezing device (3) for the film tube (1)
a means (100) for the reversing of the film tube (1)
at least one cut-off device (4) for slitting the extruded film tube (1) lengthwise characterized by the fact
that at least one cut-off device (4) is provided for slitting the extruded film tube (1) lengthwise in the conveying direction (z) of the film tube before the squeezing device (3)
that only one reverse device (100) is provided through which at least one resulting sheet (7, 17) runs before it (7, 17) is fed to a stationary processing device or storage device.
7. Process in accordance with the aforesaid claim characterized by a reversing device (100) whereby the sheets (7, 17) can be led past at least one reversing air turning bar (103, 105) and at least one reversing deflecting roller (102, 104).
8. Device in accordance with the aforesaid claim characterized by the fact that the reversing device (100) contains at least one functional pair formed of an air turning bar (103, 105) and a deflecting roller (102, 104) whereby the air turning bar (103, 105) and the deflecting roller (102, 104) carry out a reversing movement around an axis that runs orthogonal to the rotational position of the deflecting roller.
9. Process in accordance with claim 2 characterized by the fact that sheets (7, 17) are prepared with at least one sticky surface in that a film tube (1) is processed with at least one sticky peripheral surface.
10. Process in accordance with claim 3 characterized by the fact that sheets (7, 17) are prepared with at least one sticky surface in that a film tube (1) is processed with at least one sticky peripheral surface.
11. Process in accordance with claim 4 characterized by the fact that a film tube (1) is processed that has a sticky external surface and that while reversing only those surfaces of the cut film tubes (1) come into contact that had formed the internal surface of the film tube (1) before.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/801,727 US8246899B2 (en) | 2002-09-20 | 2010-06-22 | Process for the preparation of film sheets |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10243958A DE10243958A1 (en) | 2002-09-20 | 2002-09-20 | Process for the provision of film webs |
DE10243958.3 | 2002-09-20 | ||
PCT/EP2003/010345 WO2004028788A1 (en) | 2002-09-20 | 2003-09-12 | Method for the preparation of film webs |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/801,727 Continuation US8246899B2 (en) | 2002-09-20 | 2010-06-22 | Process for the preparation of film sheets |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060027942A1 true US20060027942A1 (en) | 2006-02-09 |
Family
ID=31983973
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/524,558 Abandoned US20060027942A1 (en) | 2002-09-20 | 2003-09-12 | Method for the preparation of film webs |
US12/801,727 Expired - Fee Related US8246899B2 (en) | 2002-09-20 | 2010-06-22 | Process for the preparation of film sheets |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/801,727 Expired - Fee Related US8246899B2 (en) | 2002-09-20 | 2010-06-22 | Process for the preparation of film sheets |
Country Status (6)
Country | Link |
---|---|
US (2) | US20060027942A1 (en) |
EP (1) | EP1542859B1 (en) |
AT (1) | ATE324974T1 (en) |
AU (1) | AU2003273896A1 (en) |
DE (2) | DE10243958A1 (en) |
WO (1) | WO2004028788A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102019215837A1 (en) * | 2019-10-15 | 2021-04-15 | Windmöller & Hölscher Kg | Connection and separation unit for film webs |
DE102021124559A1 (en) * | 2021-09-22 | 2023-03-23 | Decatex srl - costruzioni meccaniche | Device and method for deaerating a flattened tubular film |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061875A (en) * | 1955-10-17 | 1962-11-06 | Milo R Gerow | Wind-up method and apparatus |
US4115048A (en) * | 1976-12-27 | 1978-09-19 | Union Carbide Corporation | Apparatus for internally cooling a plastic tubular film bubble |
US4270891A (en) * | 1979-08-16 | 1981-06-02 | Hopper Stephen M | Take-off apparatus for formed tubular plastic film |
US5437544A (en) * | 1992-12-18 | 1995-08-01 | Windmoller & Holscher | Flattening and removing device for a plastic tubular film web produced in a blowing process |
US20020012785A1 (en) * | 1998-08-18 | 2002-01-31 | Leduc Edward Charles | Insulated foam board systems and methods of producing the same |
US20020048617A1 (en) * | 2000-08-11 | 2002-04-25 | Michael Hoene | Removal device for tube webs made of plastic film |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4138453A (en) * | 1977-05-17 | 1979-02-06 | Exxon Research & Engineering Co. | Process for manufacturing blown film sheeting |
DE3324978C2 (en) * | 1983-07-11 | 1985-10-17 | Windmöller & Hölscher, 4540 Lengerich | Lay-flat and take-off device for a plastic tubular film web produced by a blown blown film die head |
DE4303952C2 (en) * | 1992-12-18 | 1998-09-03 | Windmoeller & Hoelscher | Flat lay and take-off device for a plastic tubular film web produced by the blowing process |
DE19501668C1 (en) | 1995-01-20 | 1996-02-22 | Windmoeller & Hoelscher | Take-off of coated tubular film from extruder and process plant |
GB9612078D0 (en) | 1996-06-10 | 1996-08-14 | Hawtal Whiting Holdings Limite | Building a production line |
DE29621374U1 (en) * | 1996-12-10 | 1997-02-06 | Reinhold, Klaus, 49525 Lengerich | Take-off device for sheet-like plastic film material |
DE29707060U1 (en) * | 1997-04-21 | 1997-07-10 | Fischer- W. Müller Blasformtechnik GmbH, 53842 Troisdorf | Extrusion head for blow molding hollow bodies |
-
2002
- 2002-09-20 DE DE10243958A patent/DE10243958A1/en not_active Ceased
-
2003
- 2003-09-12 WO PCT/EP2003/010345 patent/WO2004028788A1/en not_active Application Discontinuation
- 2003-09-12 EP EP03757860A patent/EP1542859B1/en not_active Expired - Lifetime
- 2003-09-12 AT AT03757860T patent/ATE324974T1/en not_active IP Right Cessation
- 2003-09-12 DE DE50303238T patent/DE50303238D1/en not_active Expired - Lifetime
- 2003-09-12 US US10/524,558 patent/US20060027942A1/en not_active Abandoned
- 2003-09-12 AU AU2003273896A patent/AU2003273896A1/en not_active Abandoned
-
2010
- 2010-06-22 US US12/801,727 patent/US8246899B2/en not_active Expired - Fee Related
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061875A (en) * | 1955-10-17 | 1962-11-06 | Milo R Gerow | Wind-up method and apparatus |
US4115048A (en) * | 1976-12-27 | 1978-09-19 | Union Carbide Corporation | Apparatus for internally cooling a plastic tubular film bubble |
US4270891A (en) * | 1979-08-16 | 1981-06-02 | Hopper Stephen M | Take-off apparatus for formed tubular plastic film |
US5437544A (en) * | 1992-12-18 | 1995-08-01 | Windmoller & Holscher | Flattening and removing device for a plastic tubular film web produced in a blowing process |
US20020012785A1 (en) * | 1998-08-18 | 2002-01-31 | Leduc Edward Charles | Insulated foam board systems and methods of producing the same |
US20020048617A1 (en) * | 2000-08-11 | 2002-04-25 | Michael Hoene | Removal device for tube webs made of plastic film |
US6705980B2 (en) * | 2000-08-11 | 2004-03-16 | Windmoeller & Hoelscher | Removal device for tube webs made of plastic film |
Also Published As
Publication number | Publication date |
---|---|
DE10243958A1 (en) | 2004-04-08 |
WO2004028788A1 (en) | 2004-04-08 |
EP1542859B1 (en) | 2006-05-03 |
ATE324974T1 (en) | 2006-06-15 |
US8246899B2 (en) | 2012-08-21 |
EP1542859A1 (en) | 2005-06-22 |
DE50303238D1 (en) | 2006-06-08 |
US20110001276A1 (en) | 2011-01-06 |
AU2003273896A1 (en) | 2004-04-19 |
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AS | Assignment |
Owner name: WINDMOELLER & HOELSCHER KG, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOSSE, FRANK;REEL/FRAME:016903/0076 Effective date: 20050129 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |