EP0484812B1 - Appareil pour la formation d'un voile à couches multiples de fibres radomisées et voile obtenu au moyen de cet appareil - Google Patents
Appareil pour la formation d'un voile à couches multiples de fibres radomisées et voile obtenu au moyen de cet appareil Download PDFInfo
- Publication number
- EP0484812B1 EP0484812B1 EP91118493A EP91118493A EP0484812B1 EP 0484812 B1 EP0484812 B1 EP 0484812B1 EP 91118493 A EP91118493 A EP 91118493A EP 91118493 A EP91118493 A EP 91118493A EP 0484812 B1 EP0484812 B1 EP 0484812B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- web
- fibers
- cylinders
- suction system
- main drum
- 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 - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/02—Carding machines
- D01G15/12—Details
- D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
Definitions
- the invention relates to an apparatus for forming a veil with multiple layers of "randomized" fibers, to be applied to cards equipped with drum cylinders with toothed linings, or card plates or card caps as well as the veil produced by means of this device.
- Two different types of apparatus for the formation of fiber webs are already known.
- the veil of fibers is formed on the last cylinder - which can be a comber or a condenser - from which it is detached by sampling elements, for example cylinders, combers or the like.
- sampling elements for example cylinders, combers or the like.
- the fibers of these sails are combed by the combing cylinders in the direction of advancement of the strip and then picked up by the condensing cylinders.
- the condensing cylinders aim to disorient the fibers, its orientation always remains, in a very large percentage, in the direction of the advancement of the strip, and for that they appear substantially aligned in the direction of the warp .
- a second type of apparatus is known, with which the veil is formed by removing the fibers from a distributor, normally constituted by a large cylinder or large drum by an air suction system which deposits the fibers on a strip. conveyor, or on a perforated net, positioned below the appliance.
- a distributor normally constituted by a large cylinder or large drum by an air suction system which deposits the fibers on a strip. conveyor, or on a perforated net, positioned below the appliance.
- the object of the present invention is to increase the productivity of the machine by obtaining a haze, even of considerable weight, while nevertheless having a uniform and compact product.
- an apparatus which comprises a number of devices for removing fibers from the large drum by means of "mechanical” systems, such as cylinders, combing machines or the like, combined with a device used for removing from the large drum the residual fibers by an air suction system, so that the veil (s) produced exclusively by "mechanical” means and the veil produced exclusively by means of the air suction can be superimposed on a conveyor belt, creating a veil with multiple layers, characterized by an exceptional uniformity and a very high randomization.
- the device which is the subject of the present invention which combines the two known systems for removing fibers - "mechanical" and by air suction system - makes it possible to produce sails with a wide variety of weights.
- the mechanical sampling system does not make it possible to obtain sails weighing more than 30 g / m per sampling point
- the sampling system by air suction which collects all the residual fibers of the drum, imposes no limitation and allows the production of sails whose weight can reach up to 200 g / m, regardless of the speed of the machine.
- the quality of the product is better, since the residual fibers, which the cleaning cylinders do not succeed in detaching, are the most refined and they are distributed over the drum more evenly, since they are inside the linings of the drum.
- These fibers are not drawn back by the drum but they are collected by the air suction system and they form a complementary veil whose quality characteristics are excellent, which is added to the other veils condensed by means " mechanical ".
- the veil thus obtained is clearly more compact, more regular; the fibers are more randomized and there is the possibility of increasing the weight of the veil.
- the productivity of the machine can be increased because the subsequent removal of the residual fibers from the drum leaves sufficient space for a larger quantity of feed fibers.
- the number (10) indicates a card known for the formation of fiber veils.
- the outer surface of the large drum (11) is equipped with a toothed lining (13) illustrated in FIG. 2.
- a painter cylinder (12) rotates in the opposite direction to that of the large drum (11), and its toothed lining takes off part of the fibers, fed by the large drum (11).
- the fiber mat which forms is then condensed by the condensing cylinders (17) and (17 '), from where it is removed by means of sampling cylinders (20) and (20'), which deposit it on a strip. conveyor (18).
- the painter cylinder (22) also rotates in the opposite direction of rotation to that of the large drum (11) and by means of its toothed lining (14), indicated in FIG. 2, it takes a later part (16) of the fibers. (15) remained on the large drum (11).
- the fiber mat which forms is then condensed by the condensing cylinders (27) and (27 '), from where it is taken up by sampling cylinders (30) and (30'), which deposit it on a conveyor belt. (28).
- the layer of fibers originating from the part (19) of the strip (18) is also deposited, thus forming a double layer of fibers.
- the position of the vacuum chamber (21) relative to the large drum (11) is such that the residual fibers (31) are sucked in and come off the drum.
- the suction system (23) sucks the air through a net or a perforated conveyor belt (24) where the residual fibers (31) are deposited, there they are conveyed by the walls (25) and (26) and by the side walls of the vacuum chamber (21) quine are not illustrated in the drawings.
- On the web thus formed on the strip (24), are superimposed those which come from the strip parts (19) and (29), forming three layers of fibers which are then consolidated together by known means.
- FIG. 3 illustrates one of the possible variants of the present invention, with three groups of cylinders (12, 17, 17 ', 20, 20'; 22, 27, 27 ', 30, 30'; 32, 37, 37 ', 40, 40 '); and four conveyor belts (18, 19; 28, 29; 38, 39; 24).
- the portion of fibers remaining on the large drum (11) meets the third comb cylinder (32) for the third formation of the web.
- the present invention makes it possible to obtain a uniform and regular veil, not only by virtue of the different quality of the veils of different formation, but also because the defects likely to derive from unequal excess of fibers in the feed are distributed over paths. of different nature and length, which is why any insufficient supply will be subdivided into different sails, the thinnest areas of which will never correspond and will never overlap on the perforated conveyor belt (24). We therefore obtain an effect similar to that of a varnish with "several layers" which, as we know, is more uniform with a smaller total amount of product only one thicker layer.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Details Of Garments (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT12539A IT1241899B (it) | 1990-11-06 | 1990-11-06 | Apparecchio per la formazione di un velo a molti strati di fibre randomizzate, e velo ottenuto con detto apparecchio |
IT1253990 | 1990-11-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0484812A1 EP0484812A1 (fr) | 1992-05-13 |
EP0484812B1 true EP0484812B1 (fr) | 1996-03-20 |
Family
ID=11141349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91118493A Expired - Lifetime EP0484812B1 (fr) | 1990-11-06 | 1991-10-30 | Appareil pour la formation d'un voile à couches multiples de fibres radomisées et voile obtenu au moyen de cet appareil |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0484812B1 (it) |
AT (1) | ATE135758T1 (it) |
DE (1) | DE69118110D1 (it) |
IT (1) | IT1241899B (it) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4302075C2 (de) * | 1993-01-26 | 1996-02-08 | Wirkbau Textilmasch Gmbh | Deckelkarde |
FR2725216B1 (fr) * | 1994-09-30 | 1996-12-20 | Thibeau Et Cie A | Dispositif pour detacher et transporter a grande vitesse un voile fibreux en sortie de carde |
DE19511904B4 (de) † | 1995-03-31 | 2006-07-20 | Dilo, Johann Philipp | Anlage und Verfahren zur Herstellung von Vliesbahnen |
DE19521778A1 (de) * | 1995-06-20 | 1997-01-02 | Hollingsworth Gmbh | Vlieskrempel, sowie Verfahren zur Vliesherstellung |
ITTO980486A1 (it) * | 1998-06-05 | 1999-12-05 | Fonderie Officine Riunite F O | Carda con cilindro scaricatore. |
IT1307247B1 (it) * | 1999-04-20 | 2001-10-30 | Fonderie Officine Riunite F O | Carda, particolarmente per la preparazione di veli per tessuti nontessuti. |
ITTO20020485A1 (it) * | 2002-06-10 | 2003-12-10 | F O R Ing Graziano S P A | Carda per la preparazione di veli randomizzati per tessuti non tessuti. |
EP1502973B1 (de) | 2003-07-29 | 2007-09-19 | Spinnbau GmbH | Vlieskrempel und Verfahren zur Herstellung eines Faservlieses |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB277838A (en) * | 1926-12-07 | 1927-09-29 | Patrick Henry Walsh | Improvements in and relating to carding machines |
GB338155A (en) * | 1929-05-14 | 1930-11-14 | Proctor & Schwartz Inc | Improvements relating to apparatus for use in the manufacture of batting and felts |
US4475271A (en) * | 1982-04-29 | 1984-10-09 | Chicopee | Process and apparatus for producing uniform fibrous web at high rate of speed |
DE3805214A1 (de) * | 1988-02-19 | 1989-08-31 | Spinnbau Gmbh | Wirrvlieskrempel mit mindestens drei arbeitstrommeln |
-
1990
- 1990-11-06 IT IT12539A patent/IT1241899B/it active IP Right Grant
-
1991
- 1991-10-30 EP EP91118493A patent/EP0484812B1/fr not_active Expired - Lifetime
- 1991-10-30 DE DE69118110T patent/DE69118110D1/de not_active Expired - Lifetime
- 1991-10-30 AT AT91118493T patent/ATE135758T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE69118110D1 (de) | 1996-04-25 |
IT1241899B (it) | 1994-02-01 |
ATE135758T1 (de) | 1996-04-15 |
IT9012539A0 (it) | 1990-11-06 |
IT9012539A1 (it) | 1992-05-06 |
EP0484812A1 (fr) | 1992-05-13 |
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