EP4284973B1 - Dispositif permettant de compacter de manière continue d'un produit fabriqué en textile ou du papier - Google Patents

Dispositif permettant de compacter de manière continue d'un produit fabriqué en textile ou du papier

Info

Publication number
EP4284973B1
EP4284973B1 EP22701639.1A EP22701639A EP4284973B1 EP 4284973 B1 EP4284973 B1 EP 4284973B1 EP 22701639 A EP22701639 A EP 22701639A EP 4284973 B1 EP4284973 B1 EP 4284973B1
Authority
EP
European Patent Office
Prior art keywords
elastic ring
roller
motorized roller
motorized
manufactured product
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.)
Active
Application number
EP22701639.1A
Other languages
German (de)
English (en)
Other versions
EP4284973A1 (fr
Inventor
Roberto Franchetti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ferraro SpA
Original Assignee
Ferraro SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ferraro SpA filed Critical Ferraro SpA
Publication of EP4284973A1 publication Critical patent/EP4284973A1/fr
Application granted granted Critical
Publication of EP4284973B1 publication Critical patent/EP4284973B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C21/00—Shrinking by compressing

Definitions

  • the invention relates to a device for continuously compacting a textile manufactured product or paper, according to the general part of claim 1.
  • the Sanfor method is known, where a cellulosic fabric is continuously fed between a rubber ring about 70 mm thick and a large heated roller; at the entrance, a pressing roller, which is metallic or covered with rubber, strongly compresses the rubber ring against the textile manufactured product which is pressed against the heated roller; once it comes out of the compression area, the rubber ring recovers its original size, dragging with it by friction and thus contracting the textile manufactured product.
  • the disadvantage of the Sanfor method consists in the limited level of compaction of the textile manufactured product due to the thickness of the rubber belt.
  • Patent document DE 718624 describes a plant for compacting textile manufactured products, wherein a tensioned elastic ring turns around a first motorized roller, then it winds 180° around the surface of a second idle roller pressed against the first roller which turns at the same speed as the first roller, then it turns around a third motorized roller, placed downstream of the second roller, and it completes the loop around various return and tensioning rollers of the ring.
  • the textile manufactured product is continuously fed between the tensioned elastic ring and the second roller, and then exits the machine upstream from the third motorized roller.
  • the higher adjustable speed of the first motorized roller with the speed equal to that of the second roller, compared to that of the third motorized roller placed downstream of the first two, allows the contraction of the tensioned elastic ring, pressed against the second roller, thus resulting in the shortening of the elastic ring which drags the textile manufactured product with it, by friction.
  • Document EP 1657340 A1 describes (the cited references are to this document) a device for continuously compacting a textile manufactured product (device 1), which comprises a first motorized roller, a second motorized roller and a third motorized roller (motorized rollers 4 and 5 and drum 7) - see paragraphs [0049] and [0050]), arranged in sequence; an elastic ring 3 wound around said rollers to transport and support the textile manufactured product 2 to be compacted (see paragraph [0042]); at least one roller (idle roller 6)) adapted to act as a pre-tensioning means for applying a predetermined longitudinal tension to the elastic ring (see paragraph [0047]), which is longitudinally elastically deformable; and a further idle roller (idle guide roller 4b) wherein the elastic ring is wound around the first motorized roller 5, then wound around the second motorized roller 7 and finally wound around the third motorized roller 4 (see fig.
  • the device of the document EP 1657340 A1 further comprises means adapted to vary the speed of all three rollers (see paragraphs [0048] - [0050]).
  • the main drawback encountered with the use of the devices according to these two documents consists in the limited control of the pressure exerted by the elastic ring against the textile manufactured product, pressed against the second heated roller, often generating an uneven contraction of the same ring, wound at an angle of 180° around the second roller, which often results in an irregular shortening of said manufactured product, which makes it difficult to adjust the percentage of compaction of many articles.
  • the contact surface of the elastic ring against the second heated roller always remains constant, which is why it is not possible to precisely set a certain percentage of compaction.
  • the main object of the present invention is to realize a device for continuously compacting textile manufactured products or paper which is more effective than similar devices of the known type.
  • an elastic ring 102 which has a thickness that can vary from 10 mm up to about 70 mm even if advantageously the thickness can vary from 20 mm up to about 30 mm, a ring 102 composed of a stretchable material such as natural or synthetic rubber with a hardness that can vary from 40 Shore up to about 50 Shore, said stretchable material can be elongated up to 100%.
  • the ring 102 is wound in contact for a stretch around a first motorized roller 103 having a rubberized outer surface, and then it is wound, with a winding angle of about 180°, in contact with and around a second motorized roller 104, optionally heatable, whose outer surface has a low coefficient of friction; again thereafter, it is wound in contact for a stretch around a third motorized roller 105, which has a rubberized outer surface; again thereafter, it is tightened (see point Y) between said third roller 105 and a pressing roller 106 and is then wound in contact around a tensioning roller 107 of the elastic ring 102. Finally, the ring 102 is tightened (see point X) between the first roller 103 and a pressing roller 108 and is then wound back into contact around the first roller 103.
  • the outer surface of the two sides of the ring 102 is slightly rough to improve the coefficient of friction between said ring and the surface of the various rollers or between the surface of one side of the textile manufactured product during its compaction phase; moreover, the ring, downstream of point X, is advantageously cooled to maintain its temperature constant.
  • the outer surface of the roller 104 is advantageously covered with a mini layer of polytetrafluorethylene or ceramic.
  • a further operating mode of the device according to the invention is visible, wherein the winding angle of the elastic ring 102 around the motorized roller 104 is conversely about 60°; by adjusting the raising or lowering of the motorized roller 104, a winding angle of the elastic ring 102 around the roller 104 is obtained, which varies from a maximum value of 180°, up to a minimum value of 0°; by varying the winding degree of the elastic ring 102 around the motorized roller 104, the contact surface of the elastic ring 102 against the motorized roller 104 varies accordingly.
  • Fig. 1 and Fig. 2 upstream of the motorized roller 103, there is a series of motorized rollers, around which the elastic ring 102 is wound for a stretch, which rollers have the function, by varying the speed difference between them, of adjusting the percentage of elongation of the elastic ring 102.
  • the tensioning roller 107 adjusts the elongation with the relative tension of the elastic ring 102 which, consequently, generates a pressure up to a maximum value of about 3 kg/cm 2 , which the same ring can exert for the stretch wound against the surface of the roller 104.
  • the diameter of the roller 104 can advantageously vary from a value of 200 mm up to a value of 300 mm, but this diameter could also be smaller or larger without departing from the scope of the present invention; furthermore, in order to reduce the length of the second stretch XY, the pressing rollers 108 and 106 can be placed laterally or above the motorized rollers 103 and 105.
  • the device 1 provides that a textile manufactured product 101, which can be dried, but also wet or even heated, is continuously fed (inlet A) between the tensioned elastic ring 102, supported by the first roller 103 and the second motorized roller 104, optionally heatable, whose outer surface has a low coefficient of friction.
  • the percentage of contraction of the ring 102 is adjusted by the difference in speed between the motorized rollers 103, 104 and 105; the lower adjustable speed of the motorized roller 105 with respect to the adjustable speed of the rollers 103 and 104 effectively guarantees the adjustable percentage of contraction of the tensioned elastic ring 102, wound for a stretch around the three rollers, which may be equal to the percentage of elongation applied, in the first stretch YX, to the elastic ring 102, but may also be lower.
  • the percentage of contraction of the elastic ring 102 which rotates with an adjustable winding angle, from a minimum value of 0° up to a maximum value of 180°, around the motorized roller 104, optionally heatable, whose outer surface has a low coefficient of friction, the percentage of frictional compaction of the textile manufactured product 101, pressed by the elastic ring 102, against the aforementioned second roller 104 is adjusted accordingly.
  • the adjustable speed of the motorized roller 104 can be lower, equal to or higher than the adjustable speed of the first roller 103.
  • the adjustable winding angle of the tensioned elastic ring 102 around the motorized roller 104 from 0° up to 180°, combined with the adjustable tension of the same ring, consequently adjusts the contact surface of the textile manufactured product 101 sandwich-pressed between the elastic ring 102 and the second roller 104, but also adjusts the pressure, advantageously up to a value of about 3 kg/cm 2 , exerted by the tensioned elastic ring 102 against the surface of the same textile manufactured product 101; the adjustable pressure is indispensable to avoid, in the phase of compaction by friction of the textile manufactured product 101 against the motorized roller 104, the uneven sliding of the same manufactured product around said roller. Furthermore, varying the contact surface of the textile manufactured product 101 pressed against the motorized roller 104 contributes to varying the percentage of compaction of the manufactured product itself.
  • the pressure exerted by the elastic ring 102 against the surface of the textile manufactured product 101, wound for a stretch around the motorized roller 104, is adjusted by the ring itself; for example, if the elastic ring 102 has undergone in the first stretch YX a percentage of elongation with relative tension of 30% and the subsequent percentage of contraction in the second stretch XY is 20%, the pressure exerted by the ring 102 against the surface of the textile manufactured product 101 will be moderate, because said ring comes out slightly tensioned from the roller 105; vice versa, if the elastic ring 102 has undergone in the first stretch YX a percentage of elongation with the relative tension of 100% and the subsequent percentage of contraction in the second stretch XY is 20%, the pressure exerted against the textile manufactured product will be high, because the elastic ring 102 comes out still strongly tensioned by the roller 105.
  • the percentage of elongation with the relative tension in the first stretch YX, the subsequent percentage of contraction in the second stretch XY, as well as the winding angle of the elastic ring 102 around the motorized roller 104 offer an infinite number of possible adjustments to be chosen based on the characteristics of the textile manufactured product 101, which may vary according to the weight, chemical composition, elasticity and structure of the manufactured product, in addition to the percentage of compaction required.
  • the percentage of compaction of the same manufactured product is further increased by exploiting the elasticity of the ring 102; in fact, the side of the ring 102 which turns in contact against the textile manufactured product 101 and against the roller 104 contracts, while the outer side of the same ring lengthens.
  • the number of motorized rollers can also be greater than 3, without however departing from the scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Paper (AREA)

Claims (6)

  1. DISPOSITIF (1) DE COMPACTAGE CONTINU D'UN PRODUIT FABRIQUÉ EN TEXTILE (101) OU DU PAPIER, comprenant :
    - un premier rouleau motorisé (103), un deuxième rouleau motorisé (104) et un troisième rouleau motorisé (105), disposés en séquence ;
    - des moyens adaptés pour faire varier la vitesse des trois rouleaux motorisés (103, 104, 105) ;
    - un anneau élastique (102) enroulé autour desdits rouleaux pour transporter et soutenir le produit manufacturé en textile (101) ou le papier à compacter ;
    - au moins un rouleau (107) adapté pour agir comme moyen de prétension pour appliquer une tension longitudinale prédéterminée à l'anneau élastique (102), lequel étant déformable élastiquement longitudinalement ;
    l'anneau élastique (102) étant enroulé autour du premier rouleau motorisé (103), puis autour du deuxième rouleau motorisé (104) et enfin autour du troisième rouleau motorisé (105) ;
    le produit textile (101) ou le papier étant introduits respectivement entre l'anneau élastique (102), tous deux enroulés autour du premier rouleau motorisé (103) et du deuxième rouleau motorisé (104), puis transportés entre l'anneau élastique (102) et le deuxième rouleau motorisé (104);
    ce dispositif étant caractérisé en ce que :
    - le deuxième rouleau motorisé (104) est éventuellement chauffé et sa surface extérieure présente un faible coefficient de frottement ;
    - des moyens sont prévus pour permettre la variation de l'angle d'enroulement de l'anneau élastique (102) autour du deuxième rouleau motorisé (104), cet angle pouvant prendre une valeur comprise entre 0° et 180° ;
    - deux autres rouleaux presseurs fous (106, 108) sont également prévus, respectivement opposés en des points sensiblement ponctuels (Y, X) aux premier et troisième rouleaux motorisés (103, 105); l'anneau élastique (102) étant également prévu pour coulisser entre la paire de rouleaux opposés formée par le premier rouleau motorisé (103) et un premier rouleau presseur fou (108) et la paire de rouleaux opposés formée par le troisième rouleau motorisé (105) et un deuxième rouleau presseur fou (106) étant ainsi comprimée entre lesdits rouleaux opposés, définissant ainsi deux segments indépendants (YX) et (XY).
  2. DISPOSITIF (1) selon la revendication 1, caractérisé en ce que la variation de l'angle d'enroulement de l'anneau élastique (102) autour du second rouleau motorisé (104) s'effectue en soulevant ou en abaissant ledit second rouleau motorisé (104) parallèlement ou obliquement à la direction d'insertion du produit textile manufacturé (101) ou du papier dans la zone située entre ledit second rouleau motorisé (104) et l'anneau élastique (102).
  3. DISPOSITIF (1), selon les revendications 1 ou 2, caractérisé en ce que le réglage du compactage, d'une valeur minimale de 1 % à une valeur maximale de 100 %, d'un produit textile manufacturé (101) ou de papier, dont le grammage peut varier de 10 g/m2 à 500 g/m2, s'effectue en réglant un ou plusieurs des paramètres suivants :
    - l'angle d'enroulement de l'anneau élastique (102) autour du rouleau motorisé (104), réglable sur une valeur comprise entre 0° et 180° ;
    - le pourcentage d'allongement en première extension (YX), jusqu'à 100 % de l'anneau élastique (102) composé d'un matériau extensible tel que du caoutchouc naturel ou synthétique, ledit pourcentage d'allongement étant régulé par au moins un rouleau tendeur (107) en fonction de la tension relative de l'anneau élastique (102) ;
    - le pourcentage de contraction subséquent de l'anneau élastique (102) lors d'un second étirement (XY), inférieur ou égal au pourcentage d'allongement dudit anneau élastique lors du premier étirement (YX), ledit produit textile manufacturé (101) étant comprimé entre l'anneau élastique (102) et le second rouleau motorisé (104), ledit pourcentage de contraction de l'anneau élastique (102) étant régulé par la vitesse réglable de chacun des rouleaux motorisés (103, 104 et 105).
  4. DISPOSITIF (1), selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il prévoit une pression d'une valeur maximale de 3 kg/cm2 exercée par l'anneau élastique (102) sur le produit textile manufacturé (101) ou sur le papier.
  5. DISPOSITIF (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce qu'il comprend, dans la deuxième section (XY) de l'anneau élastique (102) où sont présents les trois rouleaux motorisés (103, 104, 105), au moins un autre rouleau motorisé.
  6. DISPOSITIF (1) selon une ou plusieurs des revendications précédentes, caractérisé en ce que la surface extérieure du deuxième rouleau motorisé (104) est recouverte d'une mini-couche de polytétrafluoroéthylène ou de céramique.
EP22701639.1A 2021-01-27 2022-01-26 Dispositif permettant de compacter de manière continue d'un produit fabriqué en textile ou du papier Active EP4284973B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102021000001547A IT202100001547A1 (it) 2021-01-27 2021-01-27 Dispositivo per compattare in continuo un manufatto tessile o della carta
PCT/EP2022/051696 WO2022161982A1 (fr) 2021-01-27 2022-01-26 Dispositif permettant de compacter de manière continue un produit fabriqué en textile ou du papier

Publications (2)

Publication Number Publication Date
EP4284973A1 EP4284973A1 (fr) 2023-12-06
EP4284973B1 true EP4284973B1 (fr) 2025-08-27

Family

ID=75439251

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22701639.1A Active EP4284973B1 (fr) 2021-01-27 2022-01-26 Dispositif permettant de compacter de manière continue d'un produit fabriqué en textile ou du papier

Country Status (3)

Country Link
EP (1) EP4284973B1 (fr)
IT (1) IT202100001547A1 (fr)
WO (1) WO2022161982A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202200022629A1 (it) * 2022-11-04 2024-05-04 Sintec Textile S R L Macchina tessile, in particolare per il finissaggio di tessuti, e relativo metodo di finissaggio

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE718624C (de) 1938-05-07 1942-03-17 C G Haubold Ag Vorrichtung zum Krumpfen von Gewebebahnen in ihrer Laengsrichtung
DE10327027A1 (de) * 2003-06-16 2005-01-05 Brückner Trockentechnik GmbH & Co. KG Vorrichtung zum Kompaktieren von textilen Warenbahnen
EP1657340A1 (fr) * 2004-11-15 2006-05-17 Sperotto Rimar S.R.L. Dispositif et procédé pour rétrécir des substrats textiles
DE202006008197U1 (de) * 2006-05-23 2007-09-27 Brückner Trockentechnik GmbH & Co. KG Vorrichtung zum Sanforisieren einer textilen Warenbahn
EP3938568A1 (fr) * 2019-03-13 2022-01-19 Sintec Textile S.R.L. Machine de compactage de structures textiles de tissus et procédé de compactage correspondant

Also Published As

Publication number Publication date
WO2022161982A1 (fr) 2022-08-04
EP4284973A1 (fr) 2023-12-06
IT202100001547A1 (it) 2022-07-27

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