EP1428923A1 - Dispositif pour humidifier des matières textiles continues et procédé de fabrication associé - Google Patents

Dispositif pour humidifier des matières textiles continues et procédé de fabrication associé Download PDF

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Publication number
EP1428923A1
EP1428923A1 EP02425756A EP02425756A EP1428923A1 EP 1428923 A1 EP1428923 A1 EP 1428923A1 EP 02425756 A EP02425756 A EP 02425756A EP 02425756 A EP02425756 A EP 02425756A EP 1428923 A1 EP1428923 A1 EP 1428923A1
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EP
European Patent Office
Prior art keywords
steam
pressure
drum
tank
textile material
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
Application number
EP02425756A
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German (de)
English (en)
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EP1428923B1 (fr
Inventor
Franco Bertoldo
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.)
Sperotto Rimar SRL
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Sperotto Rimar SRL
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Filing date
Publication date
Application filed by Sperotto Rimar SRL filed Critical Sperotto Rimar SRL
Priority to EP02425756A priority Critical patent/EP1428923B1/fr
Priority to DE60226462T priority patent/DE60226462D1/de
Priority to AT02425756T priority patent/ATE394532T1/de
Publication of EP1428923A1 publication Critical patent/EP1428923A1/fr
Application granted granted Critical
Publication of EP1428923B1 publication Critical patent/EP1428923B1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B5/00—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating
    • D06B5/02—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length
    • D06B5/08—Forcing liquids, gases or vapours through textile materials to effect treatment, e.g. washing, dyeing, bleaching, sizing impregnating through moving materials of indefinite length through fabrics

Definitions

  • the present invention relates to the field of the treatment of textile materials or the like and in particular relates to an apparatus and a method for humidifying continuous textile materials.
  • EP 1,245,710 in the name of the present Applicant describes a device for humidifying a continuous textile material.
  • the device according to EP 1,245,710 is based on a technique involving application of a liquid using essentially mechanical means.
  • This known technique is characterized in that the moisture is distributed on the outside of the textile material so as to perform, in practice, surface wetting thereof and cause said moisture to penetrate partially inside the textile structure.
  • the main drawback of this known art is that the wetting does not involve, except to a small degree, interaction of a physical nature between the moisture and the textile fibre.
  • the physical phenomena relating to the diffusion of the surface moisture inside the textile substrate and, subsequently, the absorption of the internal moisture by the macro-molecular structure of the fibre may produce, under suitable physicochemical conditions, morphological modifications of the fibrous component which are useful and, in certain cases, decisive for the finishing processes applied to the textile materials.
  • conditioning Another known technique for humidifying a continuous textile material is based on the principle of the physical absorption of gaseous state moisture by a textile fibre, according to a method which uses the relative humidity content of the air and which is known as "conditioning".
  • a known apparatus suitable for the conditioning of continuous textile materials is described in EP 0,723,609 and uses, as treatment means, moisture in the gaseous state conveyed by an air flow.
  • This apparatus uses essentially a physical principle which performs in succession the following steps: transfer of the moisture from the air to the surface of the textile material; diffusion of the moisture inside the textile structure (humidifying); and absorption of the moisture by the fibre (conditioning).
  • This conditioning humidifying apparatus has certain drawbacks. Firstly it is required to develop and use fairly sophisticated software. Moreover, the apparatus is complex and bulky. Another not insignificant drawback is the somewhat high cost. Owing to these and other drawbacks the application of said apparatus to current practices in the textile industry is problematic.
  • a known apparatus - designed by the present Applicant - for the finishing of a continuous textile material or the like comprises a rotatable drum having an internal cavity, the side wall of which is formed externally by a felt-lined side surface; a tank facing said side surface; a felt belt for conveying the textile material through the tank; and means for supplying steam into said tank and into said internal cavity.
  • the textile material is not in direct contact with the side surface of the drum which is lined with a felt-like material. The textile material is thus compressed in sandwich fashion between the drum lining and the belt.
  • means for regulating both the pressure of the steam supplied into said tank and into said cavity in order to regulate the respective temperatures inside the tank and drum are not envisaged. This, in other words, prevents the controlled regulation of the difference in temperature inside the tank and the temperature of the side surface of the drum. The result is that it is extremely difficult, if not impossible, to cause controlled condensation of the steam inside said tank onto the textile material.
  • the main object of the present invention is that of providing an apparatus and a method for humidifying continuous textile materials or the like, which is very efficient and causes controlled interaction of a physical nature between moisture and textile fibre.
  • a further object of the present invention is that of providing an apparatus and a method for humidifying continuous textile materials or the like, which does not involve the development and use of sophisticated software.
  • a further object of the present invention is that of providing an apparatus for humidifying continuous textile materials or the like which is relatively compact and less complex than the known apparatus.
  • a further object of the present invention is that of providing an apparatus for humidifying continuous textile materials or the like which is relatively inexpensive.
  • a further object of the present invention is that of providing an apparatus and a method for humidifying continuous textile materials or the like, which is also applicable as a system integrated in a textile finishing machine.
  • moisture supplied in the semi-gaseous state is used to achieve controlled saturation of the textile material or the like.
  • the principle of humidification is based on causing a controlled condensation of part of the steam supplied from a chamber (or tank), onto the surface of the side wall of a drum on which the textile material to be humidified is wound.
  • the invention provides an apparatus for humidifying a continuous textile material or the like, the apparatus comprising: a rotatable drum having an internal cavity, the side wall of which is formed externally by a side surface; a tank facing said side surface; conveying means for conveying the textile material through the tank; and means for supplying into said tank substantially saturated steam at a pressure Pv and at a temperature Tv and for supplying into said internal cavity substantially saturated steam at a pressure Pc and at a temperature Tc, wherein said conveying means comprise a permeable belt for pushing the textile material into direct contact with the side surface at least in the zone of said tank, the steam supplied into said internal cavity being kept at a pressure Pc less than said steam pressure Pv inside the tank by a certain value so as to cause partial and controlled condensation of the steam supplied into the tank onto said side surface and onto said textile material.
  • the invention provides a method for humidifying a continuous textile material or the like, the method comprising the steps of: i) providing a rotatable drum having an internal cavity, the side wall of which is formed externally by a side surface around which said textile material is wound; ii) conveying the textile material through a first peripheral zone of said drum, outside and close to said side surface; iii) supplying into said first peripheral zone substantially saturated steam at a pressure Pv and at a temperature Tv; iv) supplying into said internal cavity substantially saturated steam at a pressure Pc and at a temperature Tc; v) causing partial condensation of said saturated steam in said first peripheral zone onto said surface of the drum and said textile material, wherein the steam pressure in the first peripheral zone and the steam pressure inside the internal cavity of the drum are controlled and regulated so that said pressure is at least less than the pressure by a certain value which is variable and can be predetermined.
  • the apparatus 1 for humidifying continuous textile materials 2 (or the like) being fed in a prechosen direction comprises: a drum 3; motor means 31 for rotating the drum 3; a chamber (or tank) 5 for supplying steam; elements for sealing the pressure of the steam 6, 6', 6a, 6'a; an endless belt 9; an idle entry roller 21 and idle exit roller 22 for said fabric and said belt; a circuit 7 for the supply A of the steam into said chamber and into said drum and for discharging B of the condensate from the drum; and a system 8 for managing the steam pressure inside said chamber and said drum.
  • the drum 3 is rotatable about hubs 30, 30' by means of motor means 31.
  • the drum 3 is provided with an internal cavity 32, the side wall 4 of which is formed externally by a metallic heated surface 40.
  • the steam supply chamber or tank 5 is outside the drum 3, but close to the side wall 4 of the drum 3 and facing the heated metallic surface 40 at a first peripheral zone.
  • the steam supply tank 5 has longitudinal lateral edges 51, 51' where the elements 6, 6' and 6a, 6'a for sealing the steam pressure are housed.
  • the endless belt 9 is preferably made of permeable felt and is associated with said textile material.
  • the circuit 7 comprises a pipe 70 for supplying the steam A and two associated branches, 71 and 72 respectively. Respective means 710 and 720 for regulating the steam pressure are arranged on said branches 71, 72.
  • the delivery side of the branch 71 is connected to the steam supply tank 5 and the delivery side of the branch 72 is connected to a rotating coupling 721 - shown in Fig. 2 - associated with the hub 30 of the drum 3.
  • the rotating coupling 721 has a first end facing the drum 3 and a second end facing the opposite direction.
  • the rotating coupling 721, at one of its ends, is connected to a small pipe 722 for collecting the condensate liquid of the steam from the internal cavity 32 of the drum 3.
  • the rotating coupling 721, at its second end, is connected to a pipe 73 for discharging the condensate liquid of the steam from the internal cavity 32 of the drum 3.
  • the circuit 7 also comprises a first pressure-sensing means 74 and a second pressure-sensing means 75.
  • the first pressure-sensing means 74 is connected to the tank 5 by means of a first probe 740 and to the means 710 by means of a first and a second cable 741, 742.
  • the second pressure-sensing means 75 is connected to the pipe 73 for discharging the condensate liquid of the steam, via a second probe 750, and to the steam pressure-regulating means 720 by means of cables 751, 752.
  • a system 8 for managing the pressure of the steam is arranged between the first and the second pressure-sensing means (74, 75) and said pressure-regulating means 710, 720: the cables 741 and 751 convey input signals from the respective pressure-sensing means 74 and 75 to said system 8 and, similarly, the cables 742 and 752 convey output signals from said system 8 to the respective pressure-regulating means 710 and 720.
  • a first means 74' for converting the signal output from the system 8 to the regulating means 710 is arranged between the pressure management system 8 and the first pressure-regulating means 710.
  • a second means 75' for converting the signal output from the system 8 to the regulating means 720 is arranged between the pressure management system 8 and the second pressure-regulating means 720. Therefore, the conversion means 74' and 75' are connected respectively to the cables 742 and 752.
  • the continuous textile material 2 to be humidified - equipped with its own known driving means not shown for the sake of clarity - is associated with the endless belt 9 (preferably made of permeable felt) and travels on an idle entry roller 21 and idle output roller 22, being wound around the side wall 4 of the drum 3.
  • the side wall 4 of the drum 3 is formed on the outside by a metallic heated surface 40.
  • the drum 3 is driven rotationally around the hubs 30 and 30' by the motor means 31.
  • the continuous textile material 2 and the belt 9 are treated with steam in the zone which is delimited by the side wall 4 and by the steam supply tank 5 facing it and is situated in a first peripheral zone of the drum 3.
  • the belt 9 is of the known type.
  • it may be of the type described in the European patent applications EP 0,293,028 and EP 1,010,797 A1 in the name of the present Applicant.
  • it comprises a needle-punched felt made of polyester and aramide fibres.
  • Saturated steam at a predetermined pressure is supplied into the tank 5 by means of the branch 71 and the regulating means 710. Saturated steam at a predetermined pressure is also supplied into the hollow drum 3, by means of the hub 30 and the rotating coupling 721. Supplying occurs via the branch 72, the regulating means 720 and the rotating coupling 721, by means of which the condensate liquid of the steam is also collected from the internal cavity 32 of the drum via the small pipe 722. The condensate liquid of the steam is then discharged outside the drum 3 by means of the discharge pipe 73.
  • the predefined value of the pressure of the steam supplied into the tank 5 is maintained substantially by means of the actuation of the longitudinal sealing elements 6, 6' and lateral sealing elements 6a, 6'a arranged along the longitudinal edges 50, 50' and lateral edges 51, 51' of the tank 5.
  • the relative pressure of the steam is varied and regulated by the means 710 and 720 depending on said predefined value within the range of between 0 bar (atmospheric pressure) and 2.5 bar and, preferably, between 0.5 bar and 2.0 bar.
  • Said steam pressure sealing elements (6, 6' and 6a, 6'a) are of any known type. Preferably, they are substantially of the type described in EP 0,293,028 and EP 1,010,797 A1 in the name of the present Applicant.
  • the sealing elements advantageously comprise slider elements associated with inflatable elements.
  • Supplying of the steam inside the drum 3 produces heating of the side wall 4 and its surface 40 to a temperature substantially corresponding to that of the steam and, similarly, in the zone delimited by the side wall 4 and by the tank 5 a temperature substantially corresponding to that of the steam is established.
  • the principle of humidification is based on causing a controlled condensation of part of the steam supplied by the tank 5 onto the surface of the side wall of the drum on which the textile material to be humidified is wound.
  • the surface temperature of the drum, or the temperature of the steam supplied inside it must be suitably regulated with respect to that of the steam supplied into the tank 5.
  • the temperature of the steam depends on the pressure according to the relation expressed by the Mollier diagram for the saturated steam; therefore, by introducing this relation for the prechosen operating pressure range of 0 - 2.5 bar into the steam pressure management system, at each pressure value of the steam "P" the system is able to provide the corresponding temperature value of the steam "T".
  • the pressure of the steam "Pv” inside tank 5 is sensed by the pressure-sensing means and transmitted to the management system 8 which compares it with a prechosen pressure value (set-point) "Pvset” inside the tank. If it is not within the tolerance limit, the management system 8 imparts to the first pressure-regulating means 710, by means of the signal conversion means 74', the instruction for restoring inside the tank the pressure value "Pv” corresponding to the set-point value "Pvset".
  • the means 74' converts the electrical signal emitted by the system into a signal which can be understood by the first regulator 710.
  • the pressure value of the steam "Pc” inside the drum is measured on its condensate liquid, it being at the same pressure as the steam, by means of the pressure-sensing means 75 connected to the discharge pipe 73 and is transmitted to the management system 8.
  • a comparison is effected with a prechosen pressure value (set-point) "Pcset” inside the drum and the following two options are possible here.
  • a temperature-sensing means 76 is located opposite the surface 40 of the side wall 4 of the drum 3.
  • the temperature sensor 76 is connected to the system 8 by means of a cable 761 and from the latter to the second pressure-regulating means 720 by means of a cable 762 provided with means 76' for conversion of the output signal.
  • the means 76 senses the temperature value "Ts" of the surface 40 of the drum 3 which is compared by the system with a prechosen temperature value (set-point) "Tsset” on the surface of the drum. If the condition is encountered whereby “Ts" is less than “Tsset", with a difference between the values greater than a predefined tolerance, the system 8 drives the means 720, via the signal conversion means 76', so as to increase the pressure of the steam inside the drum until the temperature value "Ts" corresponding to the set-point value "Tsset” is restored on the surface of the drum.
  • the first and second means for regulating the pressure 710, 720 are respective modulating valves, advantageously of the pneumatically operated type.
  • the first and second pressure-sensing means 74, 75, as well as the temperature-sensing means 76, are transmitters.
  • the conversion means 74', 75' are preferably signal converters.
  • the temperature transmitter/sensor 76 may be of the contact type or remote type, for example, infrared-ray type.
  • any temperature transmitter of another type which is able to sense the surface temperature of the drum and transmit it may be suitable for the purposes of the present invention.
  • said management system (8) is a PLC.
  • the diffusion of the moisture in the semi-gaseous state (moist saturated steam, i.e. moisture in the vaporous state in equilibrium with moisture in the liquid state), into the textile material and its absorption by the fibre are performed by means of a physical process also influenced by the temperatures of the environment.
  • a cooling device 10 is provided.
  • Said cooling device 10, capable of forming an air flow for cooling the textile material 2 is arranged in a second peripheral zone of said drum 3, downstream of said first peripheral zone (in the direction of feeding of the textile material) and substantially facing said side wall 40 of said drum 3.
  • Said device 10 is of any known type, for example that described in EP 1,010,797 A1 in the name of the same Applicant.
  • the belt 9 associated with the textile material 2 to be humidified on the one hand distributes uniformly, by means of its permeable felt structure, the steam flow towards the textile material and the condensation surface 40 and, on the other hand, favours the conservation of the heat generated by the textile material during absorption of moisture.
  • the cooling device 10 reduces the temperature of the textile material, dissipating the heat generated by the fibre following absorption of moisture.
  • the Applicant has carried out tests with the apparatus of the present invention for humidifying a continuous textile material or the like.
  • Substantially high tank steam pressures produced intermediate humidification levels determined by pressure and temperature values of the steam inside the drum moderately lower than those in the tank.
  • the apparatus according to the present invention performs humidification using a physical notion which is more similar to that of conditioning. Said humidification is more effective and reliable as regards the qualitative aspects associated with the penetration of the moisture into the textile material and its absorption into the fibres.
  • the apparatus according to the present invention is based on a physical notion which is similar but simpler and relatively less costly with regard to both the mechanics and the electronics.
  • the apparatus according to the present invention is compact and less bulky. Such an apparatus may be used as an independent self-standing unit or, alternatively, may be applied as a system integrated into textile finishing machinery which are mechanically suitable for this purpose.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
EP02425756A 2002-12-09 2002-12-09 Dispositif pour humidifier des matières textiles continues et procédé de fabrication associé Expired - Lifetime EP1428923B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP02425756A EP1428923B1 (fr) 2002-12-09 2002-12-09 Dispositif pour humidifier des matières textiles continues et procédé de fabrication associé
DE60226462T DE60226462D1 (de) 2002-12-09 2002-12-09 Vorrichtung zum Befeuchten von kontinuierlichen Textilmaterialen und zugehöriges Verfahren
AT02425756T ATE394532T1 (de) 2002-12-09 2002-12-09 Vorrichtung zum befeuchten von kontinuierlichen textilmaterialen und zugehöriges verfahren

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02425756A EP1428923B1 (fr) 2002-12-09 2002-12-09 Dispositif pour humidifier des matières textiles continues et procédé de fabrication associé

Publications (2)

Publication Number Publication Date
EP1428923A1 true EP1428923A1 (fr) 2004-06-16
EP1428923B1 EP1428923B1 (fr) 2008-05-07

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EP02425756A Expired - Lifetime EP1428923B1 (fr) 2002-12-09 2002-12-09 Dispositif pour humidifier des matières textiles continues et procédé de fabrication associé

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EP (1) EP1428923B1 (fr)
AT (1) ATE394532T1 (fr)
DE (1) DE60226462D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108729072A (zh) * 2018-06-13 2018-11-02 张家港天宇精梳羊毛有限公司 一种羊毛条超声波加湿处理系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE845680A (fr) * 1975-09-06 1976-12-16 Tambour pour traiter a la vapeur des nappes de produits textiles
EP0533295A1 (fr) * 1991-09-19 1993-03-24 SPEROTTO RIMAR S.p.A. Appareil et procédé pour le decatissage de tissus en continu
EP0723609A1 (fr) * 1994-05-18 1996-07-31 Commonwealth Scientific And Industrial Research Organisation Conditionnement de tissus
US6381883B1 (en) * 1996-10-17 2002-05-07 The Commonwealth Of Australia Commonwealth Scientific And Industrial Research Organization Continuous pressure decatising of fabrics and setting of staple fibre assemblies
EP1245710A2 (fr) * 2001-03-27 2002-10-02 Sperotto Rimar S.R.L. Dispositif pour l'humectage d'une matière textile continue

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE845680A (fr) * 1975-09-06 1976-12-16 Tambour pour traiter a la vapeur des nappes de produits textiles
EP0533295A1 (fr) * 1991-09-19 1993-03-24 SPEROTTO RIMAR S.p.A. Appareil et procédé pour le decatissage de tissus en continu
EP0723609A1 (fr) * 1994-05-18 1996-07-31 Commonwealth Scientific And Industrial Research Organisation Conditionnement de tissus
US6381883B1 (en) * 1996-10-17 2002-05-07 The Commonwealth Of Australia Commonwealth Scientific And Industrial Research Organization Continuous pressure decatising of fabrics and setting of staple fibre assemblies
EP1245710A2 (fr) * 2001-03-27 2002-10-02 Sperotto Rimar S.R.L. Dispositif pour l'humectage d'une matière textile continue

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108729072A (zh) * 2018-06-13 2018-11-02 张家港天宇精梳羊毛有限公司 一种羊毛条超声波加湿处理系统

Also Published As

Publication number Publication date
EP1428923B1 (fr) 2008-05-07
ATE394532T1 (de) 2008-05-15
DE60226462D1 (de) 2008-06-19

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