EP0291437B1 - Apparatus for dry treatment of a fabric - Google Patents
Apparatus for dry treatment of a fabric Download PDFInfo
- Publication number
- EP0291437B1 EP0291437B1 EP88500045A EP88500045A EP0291437B1 EP 0291437 B1 EP0291437 B1 EP 0291437B1 EP 88500045 A EP88500045 A EP 88500045A EP 88500045 A EP88500045 A EP 88500045A EP 0291437 B1 EP0291437 B1 EP 0291437B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fabric
- duct
- chamber
- chambers
- air
- 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
- 239000004744 fabric Substances 0.000 title claims abstract description 79
- 238000007664 blowing Methods 0.000 claims abstract description 10
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000004891 communication Methods 0.000 claims description 4
- 230000003213 activating effect Effects 0.000 claims description 3
- 230000004913 activation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 description 4
- 230000032258 transport Effects 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Images
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
- D06C19/00—Breaking or softening of fabrics
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
- F26B13/101—Supporting materials without tension, e.g. on or between foraminous belts
- F26B13/104—Supporting materials without tension, e.g. on or between foraminous belts supported by fluid jets only; Fluid blowing arrangements for flotation dryers, e.g. coanda nozzles
Definitions
- the invention relates to an apparatus for the dry treatment of a fabric
- first and second chambers adapted to contain respective supplies of open width fabric, said first chamber being for an infeed supply and said second chamber being for an outfeed supply; means gradually introducing the fabric in said first chamber; means gradually withdrawing the fabric from said second chamber; a flat section duct adapted to contain the open width fabric and communicating said chambers one with the other; blowing means for blowing air into said duct; heating elements for said air; a set of slots in each of the ends of said duct to allow the passage of said air inside the duct; two sets of gates alternately to regulate the direction of the air towards one of the sets of slots; drive means for said gate sets, closing the gates of one of the sets at the same time as it opens those of the other set.
- Spanish patent ES-A-532.408 of the present applicant discloses a method and an apparatus for treating fabrics, based on the alternate flow of air transporting the fabric from one chamber to the other. Nevertheless, said patent does not precisely disclose the automatic system for reversing the air flow.
- the apparatus being of the type described hereinabove, is characterised in that each of said chambers is provided with a generally horizontal wall on which the fabric being collected in the chamber rests, forming successive folds which generally do not overlie each other, part or all of said wall being capable of undergoing a slight rocking movement depending on the weight of fabric supported thereon, said rocking movement activating the said gate set drive means.
- the apparatus comprises a first chamber 2 for a fabric 4 disposed open width.
- An infeed supply 6 of said open width fabric may be formed in said chamber 2.
- the fabric 4 is disposed, for example, in a folded pile 8, although it could also be wound, forming a roll. From the pile 8 (or, as the case may be, from the roll of the like) the fabric 4 is gradually fed into said first chamber 2 by a device 10 comprising rollers 12 which may guide an endless belt 14.
- the device 10 is driven by a motor 16 and may be rocked by an arm 18. As stated, the fabric enters the apparatus generally continuously, albeit slowly.
- a second outfeed chamber 20 Opposite to said first chamber 2, there is a second outfeed chamber 20, in which an outfeed supply 22 may be formed and from which the fabric 4 may be withdrawn, also gradually.
- the fabric 4 passes through the space 24, being transported by rollers 26 above a conveyor belt 28 provided with orifices to allow air to pass therethrough.
- a cam 30 with a connecting rod 32 alternately moves an arm 34 suitably to dispose the already treated fabric 4 forming a pile 36 of folded fabric.
- the fabric outfeed is generally continuous, albeit slow.
- the chambers 2, 20 are connected together over a flat section duct 38 adapted to contain the open width fabric 4.
- a flat section duct 38 adapted to contain the open width fabric 4.
- the duct 38 is preferably disposed generally S-shaped, i.e. having a first run 40 aligned with the first chamber 4, a first 180° elbow 42 followed by a second run 44 ending in a second elbow 46, also of 180°, connected to a third run 48 aligned with the second chamber 20.
- both chambers 2, 20 face each other and that the duct therebetween be short, for example, having a length of about 1 metre.
- the duct 38 normally has a width of 1.8 to 2 metres, without any limitative meaning being placed on these dimensions. When the fabric to be treated is wide, the duct is used without any modification. Nevertheless ( Figure 3), the duct 38 may be divided lengthwise by a partition 50, thereby allowing the simultaneous treatment of two fabric pieces 4. This is of particular interest for the treatment of goods knitted on circular machines which provide tubular fabrics having a width of about 0.8 metre.
- the apparatus comprises also blowing means 52 (preferably two fan units) adapted to blow air into said duct 38 and said means 52 are driven by a motor 53.
- blowing means 52 preferably two fan units
- each end portion 54, 56 of the duct 38 (respectively adjacent the chambers 2, 20) is provided with a set of transverse slots 58, 60, inclined relative to the duct 38, allowing the access of air towards both faces of the fabric, without creating turbulence.
- the slots 58 communicate with a branch 62, while the slots 60 communicate another branch 64 and both branches may communicate with a space 66 reached by the air blown by the blowing means 52.
- gates 68, 70 adapted to make or break the communication between the space and the branches, such that when gates 68 are open, the other gates 70 are closed.
- the gates 68 are connected over conventional means with a return gate 72, such that all are simultaneously in the same position, open or closed.
- the gates 70 are connected to anothet return gate 74, as shown in Figure 2.
- All the said gates are actuated, for example, by a hydraulic mechanism 76 rotating in 90° and shafts 78 provided with bevel gears 80.
- Each of the chambers 2, 20 is provided with a generally horizontal wall 82 on which the corresponding supply 6, 22 of fabric rests.
- the wall 82 is preferably only a part of the bottom of the respective chamber and each wall 82 may rock slightly, depending on the weight of fabric supported thereby.
- the said rocking movement is measured by a sensor or other device 84 adapted to emit an electrical signal activating the gate drive means (for example, the hydraulic mechanism 76).
- the rocking wall 82 is only a part of the chamber floor and, preferably, is the part of the floor farthest removed from the duct 38.
- the apparatus also comprises a heating element 88, close to the space 66, as well as a filter 90.
- the apparatus is provided with an accessory formed by baskects or cages 92 made from rods having an inlet end 94 adaptable to the communication space of the duct 38 with each chamber and the section of the said baskets or cages 92 is generally the same as the section of the duct 38.
- the cages 92 are provided with a curved outlet end 96 facilitating the gradual infeed and outfeed of the fabric.
- the first thing is to feed the fabric 4 by hand, fully flat over the rollers 12, switching the motor 16 on for a period of time of about one minute, whereby a sufficient length of cloth is deposited in the right hand side of the chamber 2.
- the leading end of the fabric is led by hand up to the level of the slots 58 and when the blowing means 52 is started up (with the gate 68 connecting the space 66 to branch 62 being open), the current of air transports the fabric to the chamber 20, from where the fabric is led by hand over the rollers 26 and endless belt 28.
- the chamber 20 (like the infeed chamber 2) is provided with a permeable enclosure area 86 removed from the duct 38, the air also transports the fabric 4 to this removed area and consequently practically all the supply 22 bears on the rocking wall 82.
- this supply reaches the predetermined weight referred to above (coinciding with a substantial exhaustion of the infeed supply 6), the wall 82 rocks and acts on the device 84 which emits an electrical signal for the hydraulic mechanism 76, whereby the gates 68 and 72 close and gates 70 and 74 open.
- the motor 16 causes the gradual entry of untreated fabric and the fabric outfeed mechanism withdraws the treated fabric, said fabric being treated continuously.
- the characteristics of the treatment are determined by the adjustable speeds of the infeed and outfeed motors, by the fabric speed, adjustable in dependence of the air blown by the fan, by the adjustable temperature provided by the heating elements. Therefore, a very uniform surface finish, a high drying performance and a high productivity and cheapening of costs are achieved within a wide range of possibilities.
- the fabric As its moves through the duct 38, the fabric is not subjected to mechanical stress or to harmful abrasion with the apparatus surface, since such movements take place practically without contact with the duct walls, due to the air transport in one direction or the other.
- the fabric is not subjected to any stretching either at the infeed or at the outfeed. Furthermore, reversal of the air flow is triggered by a collection of the cloth, which does not imply any stretching either, contrarily to what happens with other embodiments in which the air flow is reversed by movement of a lever on exhaustion of the fabric in one of the chambers, said fabric engaging the lever and thereby being undesirably stretched.
Abstract
Description
- The invention relates to an apparatus for the dry treatment of a fabric comprising first and second chambers adapted to contain respective supplies of open width fabric, said first chamber being for an infeed supply and said second chamber being for an outfeed supply; means gradually introducing the fabric in said first chamber; means gradually withdrawing the fabric from said second chamber; a flat section duct adapted to contain the open width fabric and communicating said chambers one with the other; blowing means for blowing air into said duct; heating elements for said air; a set of slots in each of the ends of said duct to allow the passage of said air inside the duct; two sets of gates alternately to regulate the direction of the air towards one of the sets of slots; drive means for said gate sets, closing the gates of one of the sets at the same time as it opens those of the other set.
- Spanish patent ES-A-532.408 of the present applicant discloses a method and an apparatus for treating fabrics, based on the alternate flow of air transporting the fabric from one chamber to the other. Nevertheless, said patent does not precisely disclose the automatic system for reversing the air flow.
- U.S. patent application US-A-4679333 also of the present applicant, also discloses an automatic system for reversing the air flow direction. This system is based on the friction exercised by the fabric on a rocking lever on being exhausted from one of the chambers. This system has the drawback of causing an undesired stretching of the fabric, possibly leading to deformation thereof.
- The invention provides an apparatus in which the above drawbacks are overcome. According to the invention, the apparatus, being of the type described hereinabove, is characterised in that each of said chambers is provided with a generally horizontal wall on which the fabric being collected in the chamber rests, forming successive folds which generally do not overlie each other, part or all of said wall being capable of undergoing a slight rocking movement depending on the weight of fabric supported thereon, said rocking movement activating the said gate set drive means.
- Without any limitation, there is described hereinafter in connexion with the accompanying drawing a preferred embodiment of the invention. In the drawings:
- Figure 1 is a schematic cross section of the apparatus of the invention in the lengthwise direction thereof.
- Figure 2 is a schematic perspective view of the blowing means and of the gates for regulating the air flow direction.
- Figure 3 is a cross sectional view of one embodiment of the duct communicating the two chambers.
- Figure 4 is a schematic perspective view of the accessory formed by tubular fabric control cages.
- Figure 5 is a schematic view of the apparatus, on a larger scale, showing only the first and second supply chambers provided with the accessory of Figure 4 and connected by the communication duct.
- The apparatus comprises a
first chamber 2 for afabric 4 disposed open width. An infeedsupply 6 of said open width fabric may be formed in saidchamber 2. On the outside of the apparatus, thefabric 4 is disposed, for example, in a folded pile 8, although it could also be wound, forming a roll. From the pile 8 (or, as the case may be, from the roll of the like) thefabric 4 is gradually fed into saidfirst chamber 2 by adevice 10 comprisingrollers 12 which may guide anendless belt 14. Thedevice 10 is driven by amotor 16 and may be rocked by anarm 18. As stated, the fabric enters the apparatus generally continuously, albeit slowly. - Opposite to said
first chamber 2, there is a secondoutfeed chamber 20, in which anoutfeed supply 22 may be formed and from which thefabric 4 may be withdrawn, also gradually. Thefabric 4 passes through thespace 24, being transported byrollers 26 above aconveyor belt 28 provided with orifices to allow air to pass therethrough. Acam 30 with a connectingrod 32 alternately moves anarm 34 suitably to dispose the already treatedfabric 4 forming apile 36 of folded fabric. In a similar way to the infeed, the fabric outfeed is generally continuous, albeit slow. - The
chambers flat section duct 38 adapted to contain theopen width fabric 4. Particularly, when it is desired to dry the fabric, it is desirable for the length of the duct to be substantial, since in this way the fabric is subjected to the action of the hot air for a longer period of time. - To avoid this considerable length requiring exaggerated longitudinal dimensions of the machine, the
duct 38 is preferably disposed generally S-shaped, i.e. having afirst run 40 aligned with thefirst chamber 4, a first 180°elbow 42 followed by asecond run 44 ending in asecond elbow 46, also of 180°, connected to athird run 48 aligned with thesecond chamber 20. - When a substantial length of the duct is not required, it is contemplated that both
chambers - The
duct 38 normally has a width of 1.8 to 2 metres, without any limitative meaning being placed on these dimensions. When the fabric to be treated is wide, the duct is used without any modification. Nevertheless (Figure 3), theduct 38 may be divided lengthwise by apartition 50, thereby allowing the simultaneous treatment of twofabric pieces 4. This is of particular interest for the treatment of goods knitted on circular machines which provide tubular fabrics having a width of about 0.8 metre. - The apparatus comprises also blowing means 52 (preferably two fan units) adapted to blow air into said
duct 38 and saidmeans 52 are driven by amotor 53. In turn, eachend portion chambers 2, 20) is provided with a set oftransverse slots duct 38, allowing the access of air towards both faces of the fabric, without creating turbulence. - The
slots 58 communicate with abranch 62, while theslots 60 communicate anotherbranch 64 and both branches may communicate with aspace 66 reached by the air blown by theblowing means 52. - Between the
space 66 and thebranches gates gates 68 are open, theother gates 70 are closed. - The
gates 68 are connected over conventional means with areturn gate 72, such that all are simultaneously in the same position, open or closed. Similarly, thegates 70 are connected toanothet return gate 74, as shown in Figure 2. - All the said gates are actuated, for example, by a
hydraulic mechanism 76 rotating in 90° andshafts 78 provided withbevel gears 80. - Each of the
chambers horizontal wall 82 on which thecorresponding supply wall 82 is preferably only a part of the bottom of the respective chamber and eachwall 82 may rock slightly, depending on the weight of fabric supported thereby. The said rocking movement is measured by a sensor orother device 84 adapted to emit an electrical signal activating the gate drive means (for example, the hydraulic mechanism 76). - There is means to predetermine the weight of the fabric required to cause activation.
- As said above, the
rocking wall 82 is only a part of the chamber floor and, preferably, is the part of the floor farthest removed from theduct 38. - In the area adjacent the chamber around and/or above the
wall 82, there is apermeable area 86 closing each chamber and allowing the passage of air, on being provided with passages adapted therefor. - The apparatus also comprises a
heating element 88, close to thespace 66, as well as afilter 90. - Certain fabrics, particularly certain tubular fabrics are hard to collect in the
respective supply chambers cages 92 made from rods having aninlet end 94 adaptable to the communication space of theduct 38 with each chamber and the section of the said baskets orcages 92 is generally the same as the section of theduct 38. - By adapting said
cages 92 to each of thechambers cages 92 are provided with acurved outlet end 96 facilitating the gradual infeed and outfeed of the fabric. - So that the supply of fabric collected in one of the
chambers rocking wall 82, there are providedsupport members 98 which extend from thecages 92 and bear againstsaid walls 82. Thus the weight of the fabric collected in acage 92 is transmitted to the wall. - For operation of the machine, the first thing is to feed the
fabric 4 by hand, fully flat over therollers 12, switching themotor 16 on for a period of time of about one minute, whereby a sufficient length of cloth is deposited in the right hand side of thechamber 2. By way of pertinent side doors, not shown, the leading end of the fabric is led by hand up to the level of theslots 58 and when theblowing means 52 is started up (with thegate 68 connecting thespace 66 tobranch 62 being open), the current of air transports the fabric to thechamber 20, from where the fabric is led by hand over therollers 26 andendless belt 28. - Thereafter, a substantial length of fabric is fed in until the infeed
supply 6 has been formed and the blowingmeans 52 is used to move the fabric forward until theoutfeed supply 22 is formed. Thefabric 4 is moved by the flow of air through thespace 66, thebranch 62slots 58duct 38 to the interior of theoutfeed chamber 20, from where it exits through thepermeable enclosure area 86. The flow continues through theopen gate 72, filters 90 andheater 88, from where it returns to thespace 66, reinitiating the cycle. - Since the chamber 20 (like the infeed chamber 2) is provided with a
permeable enclosure area 86 removed from theduct 38, the air also transports thefabric 4 to this removed area and consequently practically all thesupply 22 bears on therocking wall 82. When this supply reaches the predetermined weight referred to above (coinciding with a substantial exhaustion of the infeed supply 6), thewall 82 rocks and acts on thedevice 84 which emits an electrical signal for thehydraulic mechanism 76, whereby thegates gates - This reverses the air flow which now occurs through the
space 66,branch 64,slots 60 andduct 38 towards the infeedchamber 2, from which it exits through thepermeable enclosure area 86. The air flow now follows through thegate 74,filter 90 andheater 88 from where it returns to thespace 66, this other cycle being reinitiated and lasting until thesupply 6 of fabric in the infeedchamber 2 reaches a weight sufficient to reverse the air flow again, the movement from one chamber to the other being repeated as often as required. - Meanwhile, the
motor 16 causes the gradual entry of untreated fabric and the fabric outfeed mechanism withdraws the treated fabric, said fabric being treated continuously. - At the outlet, air is blown through the
conveyor belt 28 whereby the fabric is cooled from the apparatus internal temperature to room temperature. - The characteristics of the treatment are determined by the adjustable speeds of the infeed and outfeed motors, by the fabric speed, adjustable in dependence of the air blown by the fan, by the adjustable temperature provided by the heating elements. Therefore, a very uniform surface finish, a high drying performance and a high productivity and cheapening of costs are achieved within a wide range of possibilities.
- As its moves through the
duct 38, the fabric is not subjected to mechanical stress or to harmful abrasion with the apparatus surface, since such movements take place practically without contact with the duct walls, due to the air transport in one direction or the other. - The following types of treatment may be obtained: cotton fabrics may be aged, creped, softened and shrunk; woollen fabrics may be felted, softened and dimensionally stabilised; fibre blend fabrics may be provided with all kinds of finish corresponding to each class of fibre.
- It should be highlighted that the fabric is not subjected to any stretching either at the infeed or at the outfeed. Furthermore, reversal of the air flow is triggered by a collection of the cloth, which does not imply any stretching either, contrarily to what happens with other embodiments in which the air flow is reversed by movement of a lever on exhaustion of the fabric in one of the chambers, said fabric engaging the lever and thereby being undesirably stretched.
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88500045T ATE69272T1 (en) | 1987-05-12 | 1988-05-09 | DEVICE FOR DRY TREATMENT OF A TISSUE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES8701418 | 1987-05-12 | ||
ES8701418A ES2005222A6 (en) | 1987-05-12 | 1987-05-12 | Apparatus for dry treatment of a fabric. |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0291437A2 EP0291437A2 (en) | 1988-11-17 |
EP0291437A3 EP0291437A3 (en) | 1989-07-19 |
EP0291437B1 true EP0291437B1 (en) | 1991-11-06 |
Family
ID=8250893
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88500045A Expired - Lifetime EP0291437B1 (en) | 1987-05-12 | 1988-05-09 | Apparatus for dry treatment of a fabric |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0291437B1 (en) |
AT (1) | ATE69272T1 (en) |
DE (1) | DE3866014D1 (en) |
ES (2) | ES2005222A6 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4974341A (en) * | 1988-05-06 | 1990-12-04 | Jaume Anglada Vinas S.A. | Apparatus for dry treatment of a fabric |
ITFI20040183A1 (en) | 2004-08-25 | 2004-11-25 | Coramtex Srl | MACHINE AND METHOD FOR THE TREATMENT OF A FABRIC BOTH WIDE AND ROPE |
CN106480628B (en) * | 2016-12-21 | 2019-04-30 | 林金标 | Stentering forming dryer |
CN113587610B (en) * | 2021-08-20 | 2022-06-17 | 响水县嘉亿纺织有限公司 | Cloth drying device for novel textile machine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1026271B (en) * | 1955-09-24 | 1958-03-20 | Richard Holzhaeuer Dr Ing | Device for treating web-shaped textile goods |
DE1460670A1 (en) * | 1964-02-28 | 1970-04-16 | Friedrich Haas Gmbh & Co Kg Ma | Device for ventilation and heating of webs |
US3925865A (en) * | 1973-10-24 | 1975-12-16 | Donald K Christian | Fabric bulking unit |
US4055003A (en) * | 1975-08-28 | 1977-10-25 | Johnson & Johnson | Method and apparatus for altering the rigidity of webs by oscillation |
US4679333A (en) * | 1985-11-08 | 1987-07-14 | Vinas Jaime A | Apparatus for the dry treatment of a fabric |
-
1987
- 1987-05-12 ES ES8701418A patent/ES2005222A6/en not_active Expired
-
1988
- 1988-05-09 DE DE8888500045T patent/DE3866014D1/en not_active Expired - Lifetime
- 1988-05-09 ES ES198888500045T patent/ES2026687T3/en not_active Expired - Lifetime
- 1988-05-09 AT AT88500045T patent/ATE69272T1/en not_active IP Right Cessation
- 1988-05-09 EP EP88500045A patent/EP0291437B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0291437A2 (en) | 1988-11-17 |
ATE69272T1 (en) | 1991-11-15 |
EP0291437A3 (en) | 1989-07-19 |
ES2005222A6 (en) | 1989-03-01 |
DE3866014D1 (en) | 1991-12-12 |
ES2026687T3 (en) | 1992-05-01 |
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