EP1015369A1 - Verfahren und vorrichtung zur herstellung von mehrlagigen bändchen aus kunststoff - Google Patents
Verfahren und vorrichtung zur herstellung von mehrlagigen bändchen aus kunststoffInfo
- Publication number
- EP1015369A1 EP1015369A1 EP98965230A EP98965230A EP1015369A1 EP 1015369 A1 EP1015369 A1 EP 1015369A1 EP 98965230 A EP98965230 A EP 98965230A EP 98965230 A EP98965230 A EP 98965230A EP 1015369 A1 EP1015369 A1 EP 1015369A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- ribbon
- insert
- folding
- smaller width
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H18/00—Winding webs
- B65H18/08—Web-winding mechanisms
Definitions
- the invention relates to a method for producing multilayered plastic tapes according to the preamble of patent claim 1 and a device for carrying out the method according to the preamble of patent claim 5.
- DE 23 28 639 discloses a method for producing monoaxially stretched film tapes made of polypropylene. Such tapes are used to manufacture high-strength fabrics for container sacks. To increase the strength, you can increase the ribbon thickness. However, the (tensile) strength of the ribbons does not increase proportionally with their thickness.
- EP 0 307 785 B1 proposes a process for producing double-layer stretched tapes made of thermoplastic material. With the same overall thickness of such tapes, there is an increased tensile strength. Furthermore, it is proposed in the known method to fix the tapes by heat in such a way that they lie one on top of the other before winding
- thermofixed tapes have certain problems in processing, particularly in wine ben and also with regard to the structural strength of the fabric that can be produced.
- the invention is based on the object of demonstrating methods and devices for the production of multilayer tapes made of plastic for high-strength fabrics, by means of which improved fabric properties can be achieved with easier processing.
- An essential point of the invention is that the folding process takes place directly before the winding process. Correct winding is thus possible without additional thermal fixing of the layers to one another. Surprisingly, it could be shown that tapes produced in this way do not spring up during a later processing operation, in particular during weaving, on the one hand, and on the other hand have increased bending elasticity with the same tensile properties compared to the thermally fixed tapes.
- the ribbon is preferably produced in such a way that the layers are reliably prevented from sticking to one another during storage on the spool. This can ensure that the bending elasticity mentioned above is retained.
- the winding process preferably comprises cross winding.
- folds are particularly preferred such that at least one edge of the ribbon comes to rest on the edge of the folded ribbon. This can be ensured with an asymmetrical U-fold (2-ply) and especially with 3-ply folds. With such a folding shape, there is an anti-slip effect of the fabric produced, so that despite the inherently very smooth and slippery material, a certain engagement effect is achieved in which the Spread or claw the edges of the fabric in the ground or against other objects.
- the thread guide to be used advantageously in the device according to the invention has an oval or elliptical cross-section at its end facing the winding spindle, the long axis of which runs parallel to the ribbon film. A safe and yet very simple folding process can thereby be achieved.
- This thread guide preferably has a substantially circular or oval or elliptical cross section at its end facing away from the winding spindle, the long axis of which runs parallel to the surface of the ribbon. This measure also improves the folding process.
- a conical inlet area is provided.
- the thread guide preferably has a bevel in a direction in which the ribbon is fed to the winding spindle.
- the thread guide is preferably made from a ceramic material, in particular from an aluminum oxide ceramic, which results in a long service life.
- FIG. 1 shows a schematic sectional illustration of the arrangement according to FIG. 1, 3 shows a longitudinal section through an embodiment of a thread guide,
- Fig. 5 is a view along the line V-V of Fig. 3, and
- Fig. 6-9 different preferred folding forms for multi-ply ribbons.
- FIG. 1 a precision cross winder, which is known per se, is explained in accordance with a preferred embodiment of the invention.
- the thread guide 20 comprises an insert 21, into which a ribbon 1 of greater width is inserted, which is fed continuously via a compensation bracket 7.
- insert 21 the ribbon 1 with a greater width is folded into a ribbon 2 with a smaller width and is guided directly to a clamping point 8 between a push-off roller 9 and a winding package 11, which is formed on a winding spindle 10.
- the push-off roller 9 runs in a manner known per se on a jacket surface 12 of the winding package 11 and thus keeps the winding device 5 or the thread guide 20 at a substantially constant distance from the winding package 11.
- the insert 21 of the thread guide 20, as can be seen in particular from FIGS. 2, 3 and 6, is provided at its end 22 facing the winding spindle 10 with a bevel 24, which is provided in particular to insert the insert 21 with its facing the winding spindle 10 Bring the end 22 very close to the clamping point 8 without touching the lateral surface 12.
- the bevel serves 24 to make it easier to catch the ribbon when it is inserted through a slot 25 in the thread guide 20 or the insert 21.
- Insert 21 as shown in particular in Figures 3 and 6, a funnel-shaped inlet.
- the opening of the end 23 of the insert 21 facing away from the winding spindle has an essentially circular cross section.
- the end 22 of the insert 21 facing the winding spindle 10 is oval or elliptical in cross-section, however, as can be seen in particular from FIGS. 4 and 5.
- the incoming ribbon 1 of greater width is folded into a ribbon 2 of smaller width, as is indicated in FIG. 6, edges 3 and 4 of the ribbon coming to lie on the center.
- FIGS. 7, 8 and 9 In another embodiment of the invention, which is not shown here in detail, and which may also have two folding members one behind the other (one possibly also in front of the compensation bracket 7), other folding shapes are produced, as shown in FIGS. 7, 8 and 9 .
- the tapes 2 of smaller width differ in the embodiments according to FIGS. 7 and 8 in that either both edges 3 and 4 or at least one edge 3 of the
- the folded ribbon 2 is fed directly to the clamping point 8 between the push-off roller 9 and the outer surface 12 of the winding package 11 after it has run out of the insert 21, as shown in FIG. 2, the ribbon can no longer unfold and is placed on the winding package 11 in the folded state.
Landscapes
- Making Paper Articles (AREA)
- Manufacturing Of Electric Cables (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Description
Claims
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19754040 | 1997-12-05 | ||
DE19754040 | 1997-12-05 | ||
DE19756257 | 1997-12-17 | ||
DE1997156257 DE19756257A1 (de) | 1997-12-17 | 1997-12-17 | Verfahren und Vorrichtung zur Herstellung von mehrlagigen Bändchen aus Kunststoff |
PCT/EP1998/007880 WO1999029607A1 (de) | 1997-12-05 | 1998-12-03 | Verfahren und vorrichtung zur herstellung von mehrlagigen bändchen aus kunststoff |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1015369A1 true EP1015369A1 (de) | 2000-07-05 |
EP1015369B1 EP1015369B1 (de) | 2003-07-16 |
Family
ID=26042219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98965230A Expired - Lifetime EP1015369B1 (de) | 1997-12-05 | 1998-12-03 | Verfahren und vorrichtung zur herstellung von mehrlagigen bändchen aus kunststoff |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1015369B1 (de) |
AT (1) | ATE245117T1 (de) |
DE (1) | DE59809025D1 (de) |
WO (1) | WO1999029607A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202010008846U1 (de) | 2010-10-20 | 2010-12-23 | Starlinger & Co Ges.M.B.H. | Spulmaschine |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2366130A (en) * | 1942-09-26 | 1944-12-26 | Frederick R Slavek | Machine for interfolding strips |
DE3866834D1 (de) * | 1987-09-14 | 1992-01-23 | Windmoeller & Hoelscher | Verfahren und vorrichtung zur herstellung doppellagiger verstreckter baendchen. |
-
1998
- 1998-12-03 AT AT98965230T patent/ATE245117T1/de not_active IP Right Cessation
- 1998-12-03 EP EP98965230A patent/EP1015369B1/de not_active Expired - Lifetime
- 1998-12-03 DE DE59809025T patent/DE59809025D1/de not_active Expired - Fee Related
- 1998-12-03 WO PCT/EP1998/007880 patent/WO1999029607A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9929607A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999029607A1 (de) | 1999-06-17 |
EP1015369B1 (de) | 2003-07-16 |
DE59809025D1 (de) | 2003-08-21 |
ATE245117T1 (de) | 2003-08-15 |
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