US20060112526A1 - Apparatus and method for shrinking continuous textile substrates - Google Patents

Apparatus and method for shrinking continuous textile substrates Download PDF

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Publication number
US20060112526A1
US20060112526A1 US11/273,608 US27360805A US2006112526A1 US 20060112526 A1 US20060112526 A1 US 20060112526A1 US 27360805 A US27360805 A US 27360805A US 2006112526 A1 US2006112526 A1 US 2006112526A1
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Prior art keywords
belt
motorized roller
roller
length
motorized
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Abandoned
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US11/273,608
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English (en)
Inventor
Franco Bertoldo
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Sperotto Rimar SRL
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Sperotto Rimar SRL
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Assigned to SPEROTTO RIMAR S.R.L. reassignment SPEROTTO RIMAR S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BERTOLDO, FRANCO
Publication of US20060112526A1 publication Critical patent/US20060112526A1/en
Abandoned legal-status Critical Current

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    • 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 present invention relates in general to the treatments which produce shrinkage of textile substrates.
  • it relates to an apparatus and a method for shrinking continuous textile substrates such as, for example, cross-woven fabrics, knitted fabrics, non-woven fabrics and so on.
  • the shrinkage treatment of continuous textile substrates is performed in order to reduce substantially their tendency to shrink in an uncontrolled manner.
  • Shrinkage of the textile substrates could occur, for example, owing to the effect of the physical and mechanical processing operations which they undergo during manufacture of the articles of clothing or following domestic maintenance of these articles of clothing.
  • the known shrinkage treatments performed during a cycle for finishing continuous textile substrates substantially compact the threads arranged transversely with respect to the threads arranged longitudinally. In this way the transverse threads are arranged more closely together, have a greater density and a smaller freedom of movement. Consequently, the longitudinal dimension of the continuous textile substrate is reduced by a certain amount, which is variable depending on the morphological characteristics of the substrate and in particular the efficiency of the apparatus used.
  • a known shrinkage technique is so-called “compressive shrinkage”. This technique is based essentially on the use of a belt together with which the textile substrate to be shrunk is firmly joined.
  • the belt and the textile substrate to be shrunk are driven around rollers or cylinders with a different radius of curvature.
  • the characteristics of the belt and/or the system are such as to cause a reduction in the length or peripheral speed of the belt along a short section immediately downstream of the joining point with the substrate. In this way, as the belt becomes shorter, it conveys along with it the textile substrate which also contracts.
  • the technique and the characteristic features of the belt may differ depending on whether the textile substrate is essentially a cross-woven fabric or a knitted fabric.
  • the patent U.S. Pat. No. 2,021,975 discloses a method and an apparatus for treating cross-woven fabrics.
  • This known apparatus uses a belt having a surface which passes from an initial untensioned state into an extended state and again into an untensioned state following a path which is alternately more or less convex on support rollers and on a rotating drum.
  • the textile material to be shrunk is fed onto the surface of the belt and is tightly pressed against it along the section of the path in the extended state: in this way the fabric is conveyed in such a way as to be contracted by the surface of the belt along the following length of the path where its contraction into the untensioned state occurs.
  • the patent U.S. Pat. No. 4,156,955 describes a method and an apparatus for pre-shrinking fabrics.
  • the apparatus comprises an entry roller, a heated rotating drum and a belt (usually consist of fibrous felt-like material) which travels so as to be wound around the surface of the entry roller and then the surface of the rotating drum.
  • the surface of the belt which is situated on the outside with respect to the surface of the drum is subject along that very convex length (having a low radius of curvature) to an acceleration compared to the preceding straight section.
  • the same surface of the belt is subject to a deceleration along that section which is not very convex.
  • a flexible and strong sheet-like element with a smooth surface (referred to as “shoe” in the jargon of textile mechanics) is inserted between the surface of the belt which is on the outside with respect to that of the roller and the surface of the drum, extending depthwise between drum and belt.
  • a continuous fabric is fed onto the belt wound around the roller, being inserted and arranged between its outer surface and the flexible sheet element. In this way the fabric is pressed against the belt so that they are joined together integrally and is driven by the belt so as to be wound around the surface of the drum.
  • the fabric is in this way forced to follow the belt during the reversal in its curvature, which causes a deceleration thereof, and to undergo a consequent slowing down which produces longitudinal shrinkage.
  • the patents U.S. Pat. No. 4,908,918 and U.S. Pat. No. 4,969,243 describe a method and an apparatus for shrinking knitted fabric, in particular tubular knitted fabric.
  • the apparatus according to both the patents comprises a belt for conveying/shrinking the textile substrate to be treated and a member (“shoe”) for inserting/pressing said substrate in the shrinkage zone.
  • the belt consists of a textile structure with a substantially non-extendable base, which supports a layer of fibrous material, usually of the needle-punched felt type, which is substantially extendable. When the bottom side rests rotationally on the surface of a drive roller, its unextendable surface does not undergo practically any longitudinal extension.
  • the elastic surface of the belt is subject to an extending action along the curved section of the path, while it contracts subsequently when the path of the belt becomes substantially straight again.
  • the degree of this elastic variation is also dependent on the total thickness of the belt and the ratio between the diameter of the belt drive roller and the thickness of the belt.
  • the textile substrate engaged integrally with the deformable and/or extendable surface of the belt, is subject to a “compression” in the direction of feeding, namely a compaction of its structure and, ultimately, longitudinal shrinkage.
  • the main problem of the known solutions is that the range of action of these expansion and contraction steps is overall relatively limited, both owing to the basic principle of the treatment and, in particular, owing to the characteristics of limited deformability of the types of belt which are used.
  • the desired degree of shrinkage to be imparted to the textile substrate cannot be regulated except within very small limits and depends essentially on the deformation capacity of the belt during use, in addition to the morphological and structural characteristics of the said substrate.
  • the textile substrate maintains a residual shrinkage potential generally of between 2% and 5%, values which are at present not satisfactory for the manufacturers of articles of clothing.
  • the textile substrate “rejects” the excessive compacting, resulting in undesirable surface defects, generally in the form of deformations and/or distortions (referred to as “orange peel”, “elephant skin”, or the like, in the technical jargon).
  • the object of the present invention is to provide an apparatus and a method which allow a shrinkage treatment to be performed on a textile substrate which results in extremely low values of the residual shrinkage potential following treatment of the substrate.
  • an object of the present invention is to provide an apparatus and method which allow a gradual and unforced shrinkage treatment to be performed, avoiding any defects in the textile substrate.
  • the present invention provides an apparatus for shrinking a continuous textile substrate.
  • the apparatus comprises: a first motorized roller, a second motorized roller, a closed loop wound belt for conveying and supporting the textile substrate and a pre-tensioning means for applying a longitudinal tension to the belt and a means for guiding the belt.
  • the pre-tensioning means comprise a third roller, which is preferably idle, and the means guiding the belt comprises a rotating drum for guiding the belt along a length between the second motorized roller and the first motorized roller.
  • the textile substrate is conveyed arranged between the belt and the rotating drum.
  • the belt according to the present invention is substantially elastically deformable in extension.
  • the tangential speed on the outer surface of the first motorized roller is less than the tangential speed on the outer surface of the second motorized roller.
  • a third motorized roller situated downstream, with respect to an advancing direction of the belt and the first motorized roller, and connected to the first motorized roller so that the tangential speeds on the respective outer surfaces substantially coincide.
  • the belt is wound at least partially around the third motorized roller.
  • an idle roller for guiding the belt, situated between the third motorized roller and the idle pre-tensioning roller, the belt being wound at least partially around the idle guide roller.
  • a fourth motorized roller situated upstream, with respect to an advancing direction of the belt and the second motorized roller, and connected to the second motorized roller so that the tangential speeds on the respective outer surfaces substantially coincide, the belt being wound at least partially around the fourth motorized roller.
  • a fifth motorized roller is provided.
  • Such a fifth roller being arranged between the fourth motorized roller and the idle pre-tensioning roller and connected to the second motorized roller so that the tangential speeds on the respective outer surfaces substantially coincide, the belt being wound at least partially around the fifth motorized roller.
  • a first length of the belt substantially lying between the first motorized roller and the third idle pre-tensioning roller and between the latter and the second motorized roller has a longitudinal extension greater than the longitudinal extension in the pre-tensioned condition.
  • a second length of the belt substantially lying between the second motorized roller and the first motorized roller has a longitudinal extension less than or equal to the longitudinal extension in the pre-tensioned condition.
  • the rotating drum has a side surface for guiding at least part of the second length of the belt, the side surface of the drum being heated to a temperature higher than the ambient temperature.
  • the belt comprises a substantially extendable and elastic material, of natural origin, preferably based on rubber.
  • the belt comprises a substantially extendable and elastic material, of synthetic origin, preferably a polyurethane polymer or the like.
  • the belt comprises a substantially extendable and elastic material, of textile origin, preferably a felt supported by an extendable structure essentially consisting of elastic fibre.
  • the distance between the surface of the drum and the surface of the second motorized roller is less than or equal to the thickness of the belt and the distance between the surface of the drum and the surface of the first motorized roller is greater than or equal to the thickness of the belt.
  • the present invention provides a method for shrinking a continuous textile substrate.
  • the method according to the invention comprises the steps of:
  • the step of providing a belt comprises the step of providing a belt which is elastically deformable in extension by a percentage ranging between 5% and 100% of its length in the untensioned state and, preferably, equal to about 50% with respect to its untensioned length when subjected to a tensile force of about 3-12 kg/cm.
  • the belt conveying step comprises the step of providing a first motorized roller; a second motorized roller; an idle roller; and a rotating drum for guiding the belt along its length between the second motorized roller and the first motorized roller, the tangential speed of the second motorized roller being greater than the tangential speed of the first motorized roller.
  • the step of providing a treatment surface comprises the steps of providing an idle drum having an outer surface and heating this outer surface.
  • the belt along at least one portion of its first length, is more extended compared to its pre-tensioned condition by a percentage ranging between about 5% and 50%.
  • the step of feeding the continuous textile substrate comprises the step of feeding a continuous textile substrate on the surface of the belt in the fully extended state and conveying the textile substrate on the belt in the state where fully contracted and subject to gradual untensioning.
  • the present invention is based essentially on a shrinkage technique involving sliding. By means of the present invention all the technical and qualitative drawbacks of the known art of compressive shrinkage are overcome and the productive efficiency of the known solutions is increased.
  • FIG. 1 shows, in schematic form, a first embodiment of the apparatus according to the invention.
  • FIG. 2 shows, in schematic form, a second embodiment of the apparatus according to the invention.
  • the apparatus 1 for shrinking a continuous textile substrate 2 advancing in a direction A-B comprises a belt 3 , a first motorized roller 4 , a second motorized roller 5 , an idle transmission roller 6 and a drum 7 .
  • the belt 3 is endlessly wound and is substantially elastically deformable longitudinally.
  • the term “belt elastically deformable longitudinally”, for the purposes of the present description and the accompanying claims, is understood as meaning a belt which is elastically deformable so as to be extended and shortened such that, when subjected to a longitudinal pulling force, it is subject to an elastic deformation ranging between 5% and 100% of its length compared to its length in a substantially untensioned state (not subject to any pulling force).
  • the elastic deformation ranges between 5% and 50% of the length of the belt compared to its length in a substantially untensioned state when the belt is subjected to a tensile force of between about 2 kg/cm and about 15 kg/cm. More preferably, the elastic deformation is about 50% when the belt is subjected to a tensile force of between about 3 kg/cm and about 12 kg/cm.
  • the first and the second roller 4 , 5 are preferably motorized rollers for driving the belt 3 .
  • the belt 3 supports and conveys the textile substrate 2 .
  • the drum 7 is preferably idle and heated and acts essentially as a locating surface for guiding the belt 3 .
  • the outer surface of the drum 7 is indicated by 72 and the thickness of the belt 3 is indicated by S.
  • the first motorized roller 4 and the second motorized roller 5 are made to rotate in a first direction (clockwise) about axial shafts 40 and 50 , respectively, by motor means, known and not shown, keyed onto hubs 41 and 51 of said shafts.
  • the rollers 4 , 5 and 6 have a side surface indicated by 42 , 52 , and 62 , respectively.
  • the endlessly wound belt 3 follows a closed path and defines an inner surface 30 and an outer surface 31 .
  • the belt 3 is wound, at least partially, with its inner surface 30 onto the side surface 42 , 62 , 52 of the rollers 4 , 6 , 5 .
  • the belt 6 is wound with its outer surface 31 onto the side surface 72 of the drum 7 .
  • the idle roller 6 is arranged downstream of the motorized roller 4 and upstream of the motorized roller 5 ; the drum 7 is arranged between the motorized rollers 4 and 5 so that the side surface 72 of the cylinder is facing in the vicinity of the side surfaces of the motorized rollers 4 and 5 and at a distance D.
  • the distance D preferably, substantially coincides with the thickness S of the belt.
  • a first “lower” length 33 substantially lying between the first motorized roller 4 and the second motorized roller 5 (passing via the idle transmission roller 6 ) and a second “upper” length 34 substantially lying between the second motorized roller 5 and the first motorized roller 4 .
  • the idle roller 6 exerts on the belt, along the first length 33 , a predefined vertical thrust by means of mechanical, pneumatic or hydraulic means.
  • the belt is thus operationally pre-tensioned longitudinally over the whole of its length.
  • the belt 3 is driven so as to be fed forwards by the first motorized roller 4 at a first predefined and adjustable tangential speed.
  • the belt is also driven so as to be fed forwards by the second motorized roller 5 at a second tangential speed.
  • the second tangential speed is greater than that imparted by the first roller.
  • the first length 33 of the belt 3 is deformed so as to be extended and the second length 34 of the belt is deformed so as to be contracted.
  • the belt 3 has a longitudinal extension greater than that assumed in the pre-tensioned state.
  • the belt has a longitudinal extension which is smaller than that assumed in the pre-tensioned state.
  • the contracted or extended pre-tensioning and deformation states are graphically shown in FIG. 1 .
  • the drum 7 is driven so as to rotate in an anti-clockwise direction by the second length 34 , the surface 31 of which is at least partially wound onto the side surface 72 of the cylinder.
  • the side surface 72 is heated to a predefined temperature by known steam, diathermic oil, electric resistances, etc.
  • the drum 7 is made to rotate in an anti-clockwise direction about an axial shaft 70 by means of a reducer, known and not shown, keyed to a hub 71 of the shaft.
  • the reducer is connected to the motor of the second motorized roller 5 by known transmission means.
  • the reducer imparts to the side surface 72 of the drum 7 a tangential speed which is substantially equal to that of the side surface 52 of the second motorized roller 5 .
  • the belt portion partially wound around the first motorized roller 4 is extended and pre-tensioned in a manner corresponding to the pre-tensioning.
  • the belt is driven so as to be pulled by the second motorized roller 5 which has a speed of rotation greater than that of the first motorized roller 4 . Consequently, the belt undergoes a gradually increasing extension compared to its normally pre-tensioned length (which, as mentioned above, corresponds to the length of the belt partially wound onto the first motorized roller 4 ).
  • the maximum extension of the belt 3 is achieved in the portion of the belt which is partially wound onto the second motorized roller 5 .
  • the portion 34 of the belt is driven “slack” by the first motorized roller 4 at a speed of rotation less than that of the second motorized roller 5 . Consequently, along the second length, the belt is gradually slackened until it reaches its normal pre-tensioned length passing through decreasing degrees of contraction. The maximum contraction occurs immediately downstream of the second motorized roller 5 and total recovery of the pre-tensioned state is reached, as mentioned above, along the portion of the belt partially wound onto the first motorized roller 4 .
  • the surface 31 of the second length 34 travels engaged with and partially wound over the surface 72 of the drum 7 .
  • its surface 31 “slides” partially over the surface 72 of the drum in the opposite direction to the advancing direction.
  • a continuous textile substrate 2 is fed in contact with the surface 31 of the belt 3 substantially where it is subject to maximum extension (around the second motorized roller 5 ).
  • the textile substrate is situated tightly gripped between the surface 72 of the drum 7 and the surface 31 of the belt.
  • the surface 72 of the drum is heated to a certain temperature.
  • the second length 34 of the belt and the textile substrate 2 supported by the surface 31 are pushed by the second motorized roller 5 so as to rotate about the drum 7 and are pulled by the first motorized roller 4 so as to be extracted from the drum.
  • the textile substrate 2 is not tightly constrained to the belt 3 . Therefore, while the belt is contracted until it recovers practically entirely its original pre-tensioned state (in static or dynamic conditions) and the textile substantially follows the belt during said contraction, the textile substrate is able to slide lightly over the surface 31 and over the side surface 72 of the drum 7 in the opposite direction to the direction of contraction, namely in the opposite direction to the advancing direction.
  • FIG. 2 a second embodiment of the present invention is described.
  • the same reference numbers will be used to indicate the same components.
  • the apparatus 1 of the second embodiment is substantially similar to the apparatus 1 of the first embodiment.
  • at least one third motorized roller 4 a is provided in order to pull the belt and an idle roller 4 b for guiding the belt.
  • the third motorized roller 4 a and the idle guide roller 4 b are arranged in immediate succession downstream of the first motorized roller 4 .
  • a fourth motorized roller 5 a and a fifth motorized roller 5 b for pulling the belt 3 are arranged immediately upstream (relative to the advancing direction of the belt) of the second motorized roller 5 .
  • the third motorized roller 4 a, the fourth motorized roller 5 a and the fifth motorized roller 5 b are made to rotate about respective shafts 40 a, 50 a and 50 b by transmission means, known and not shown.
  • the transmission means are preferably keyed to respective hubs 41 a, 51 a and 51 b of the shafts 40 a, 50 a and 50 b.
  • the transmission means of the third motorized roller 4 a are connected to the motor of the first motorized roller 4 ; similarly, the transmission means of the fourth and fifth motorized roller 5 a, 5 b are connected to the motor of the second motorized roller 5 .
  • the third motorized roller 4 a will have substantially the same speed of rotation as the first motorized roller 4 ;
  • the fourth and the fifth motorized roller 5 a, 5 b will have substantially the same speed of rotation as the second motorized roller 5 .
  • the transmission means impart to the third and to the fourth motorized roller 4 a and 5 a an anti-clockwise direction of rotation and to the fifth motorized roller 5 b a clockwise direction of rotation.
  • the idle guide roller 4 a also rotates freely about its shaft 40 b in the clockwise direction.
  • the belt 3 along its “lower” first length 33 is wound at least partially, with its inner surface 30 , onto the side surface 42 , 42 b, 52 b, 52 of the respective rollers 4 , 4 b, 5 b and 5 ; the belt 5 is wound at least partially with its opposite surface 31 , onto the side surface 42 a, 52 a of the rollers 4 a and 5 a.
  • the first “lower” length 33 of the belt is deformed so as to extend (i.e. is longer compared to the belt in the “static” or “dynamic” pre-tensioned states) by tensile driving by the second motorized roller 5 assisted by the third and by the fourth motorized roller 5 a, 5 b, with respect to the first motorized roller 4 assisted by the third motorized roller 4 a.
  • the idle roller 4 b performs the function of guiding the first belt length 33 during pulling, hence extension, adapting the tangential speed of its side surface 42 b to that of the surface 30 of the belt portion 33 wound around it.
  • the belt 3 is at least partially made of substantially extendable and elastic material.
  • this material is of natural origin, for example, rubber-based.
  • this material is of synthetic origin, for example based on polyurethane polymer.
  • this material is of textile origin in the form, for example, of felt supported by an extendable structure essentially consisting of an elastic fibre. Obviously, it is also possible to manufacture a belt combining two or more of the abovementioned materials.
  • the belt is subject to an elastic deformation in extension ranging between 5% and 100% of its length in the untensioned state and, preferably, equal to between 5% and 50% when the belt is subject to a tensile force of between about 5 kg/cm and about 25 kg/cm. More preferably, the elastic deformation in extension, with respect to its “untensioned” length is about 50% when the belt is subject to a tensile force of between about 3 kg/cm and about 12 kg/cm. In this extended condition (equal to about 50%), the contraction in the transverse direction ranges between about 10% and about 30% with respect to the substantially untensioned length.
  • the thickness S of the belt preferably lies in the range of between about 2.0 mm and 40.0 mm. More preferably, said thickness S lies in the range of between about 4.0 mm and 16.0 mm. According to a particularly advantageous embodiment of the invention, the belt has a thickness of about 10.0 mm.
  • the belt is equally well made as woven fabric or non-woven fabric (for example of the felt type). Alternatively, the belt may be made as an elastic strap. The choice as to the preferred material for the belt depends primarily on the type of fabric to be treated. Preferably, rubber belts are advantageously used for cross-woven fabrics or the like, while felt fabrics are advantageously used for knitted fabrics or the like.
  • the drum 7 for guiding the belt is preferably heated to a temperature ranging between about 50° C. and about 200° C. and, more preferably, to a temperature ranging between about 110° C. and 140° C.
  • a distance D 1 is provided between the side surface 72 of the drum 7 and the side surface 52 of the second motorized roller 5 .
  • the distance D 1 is less than the thickness S of the belt by an amount ranging between about 0% and about 50%. In this way, the belt and the textile substrate are firmly engaged with each other.
  • a distance D 2 is provided between the side surface 72 of the drum 7 and the side surface 42 of the first motorized roller 4 .
  • the distance D 2 is greater than the thickness S 2 of the belt by an amount ranging between 0% and 100%.
  • the continuous textile substrate may be a cross-woven fabric, or a knitted fabric or a non-woven fabric.
  • the knitted fabric equally well has an open form or a tubular form.
  • the apparatus and the method for shrinking continuous textile substrates by means of “sliding” according to the present invention allow the textile substrate to exploit practically the whole of its shrinkage potential. In this way, the goal of “zero” residual shrinkage is achieved.
  • the degree of compaction of the textile substrate may be varied and adjusted in proportion to its potential shrinkage limit.
  • a further advantage consists in the fact that the maximum contraction/shrinkage of the textile substrate is so rapid that it may be performed at speeds of advancing movement of the substrate which are considerably greater than those of the known “compressive” technique. In this way the productive capacity of the treatment is increased considerably.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
US11/273,608 2004-11-15 2005-11-15 Apparatus and method for shrinking continuous textile substrates Abandoned US20060112526A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04425854.9 2004-11-15
EP04425854A EP1657340A1 (fr) 2004-11-15 2004-11-15 Dispositif et procédé pour rétrécir des substrats textiles

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US (1) US20060112526A1 (fr)
EP (1) EP1657340A1 (fr)
KR (1) KR20060054163A (fr)
CN (1) CN1811041A (fr)
TW (1) TW200628657A (fr)

Cited By (4)

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US20070155565A1 (en) * 2005-12-29 2007-07-05 Giancarlo Cassarino Elastic silicone rubber belt
IT201900003121A1 (it) * 2019-03-04 2020-09-04 Red Carpet S R L Una macchina compattatrice
IT202100001547A1 (it) 2021-01-27 2022-07-27 Ferraro Spa Dispositivo per compattare in continuo un manufatto tessile o della carta
US20220235505A1 (en) * 2021-01-22 2022-07-28 Gregory Alan Holmes Compactor for lengthwise compressive shrinkage of fabrics

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CN202242297U (zh) * 2011-10-13 2012-05-30 上海长胜纺织制品有限公司 冷转移印花机的预缩装置
IT201700038512A1 (it) * 2017-04-07 2018-10-07 Red Carpet S R L Una macchina compattatrice
IT201700038499A1 (it) * 2017-04-07 2018-10-07 Red Carpet S R L Una macchina compattatrice
IT201700108694A1 (it) * 2017-09-28 2019-03-28 Ferraro Spa Apparato e metodo di compattazione per tessuti
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
IT201900003621A1 (it) 2019-03-13 2020-09-13 Sintec Textile S R L Macchina compattatrice di strutture tessili di tessuti e relativo metodo di compattazione
IT201900009201A1 (it) * 2019-06-17 2020-12-17 Santex Rimar Group S R L Apparato di compattazione di un substrato tessile continuo tramite nastro elastico
IT201900009198A1 (it) * 2019-06-17 2020-12-17 Santex Rimar Group S R L Apparato di compattazione di un substrato tessile continuo tramite nastro elastico
IT202200008354A1 (it) 2022-04-27 2023-10-27 Sintec Textile S R L Macchina compattatrice di tessuti e relativo metodo di compattazione

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CN1811041A (zh) 2006-08-02

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