GB2234535A - Form fixing machine particularly for wool fabrics - Google Patents
Form fixing machine particularly for wool fabrics Download PDFInfo
- Publication number
- GB2234535A GB2234535A GB9015131A GB9015131A GB2234535A GB 2234535 A GB2234535 A GB 2234535A GB 9015131 A GB9015131 A GB 9015131A GB 9015131 A GB9015131 A GB 9015131A GB 2234535 A GB2234535 A GB 2234535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- back piece
- fabric
- drum
- piece
- area
- 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.)
- Withdrawn
Links
- 239000004744 fabric Substances 0.000 title claims abstract description 46
- 210000002268 wool Anatomy 0.000 title description 3
- 239000002184 metal Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 238000005470 impregnation Methods 0.000 claims abstract description 6
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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
- D06C7/00—Heating or cooling textile fabrics
-
- 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
- D06C15/00—Calendering, pressing, ironing, glossing or glazing textile fabrics
- D06C15/06—Calendering, pressing, ironing, glossing or glazing textile fabrics between rollers and co-operating moving surfaces formed of flexible material, e.g. bands
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
The fixing machine comprises a fabric impregnation/wringing area (30) and a form fixing area (40). Such area (40) includes a heated rotating metal drum (6) and a first form fixing endless back piece (7) of rubber material concordantly rotatable with the drum (6) and having an operational portion 31 partially trained about drum (6) and pressed against a fabric made to pass between drum (6) and first back piece (7). A second closed-ring back piece (8), substantially not yielding to traction, is arranged with an operational portion (32) thereof pressing against portion (31) of piece (7) with a predetermined pressure higher than of piece (7) against the fabric and metal drum (6). The exit extremity of portion (32) of piece (8) is further back with respect to the corresponding extremity of portion (31) of piece (7) so as to impart to the fabric a sharp temperature reduction which stabilizes the form attained. <IMAGE>
Description
"Form fixing machine particularly for wool fabrics".
* * * * *
The present invention relates to a form fixing machine particularly for wool fabrics.
It is known that in the processing stage, in certain woolbased fabrics, defects may occur, such as creases or deformations of various kinds, warp and weft tensions, which must be removed before the fabric is ready to be put on the market.
Known machines of this type provide for the impregnation of the fabric in hot water which is then partially removed and uniformed before the arrival of the fabric at a fixing area which comprises a heated rotating metal drum, on whose external surface the fabric being treated presses against, on which there is pressed a portion of a rubber back piece accomplished in the form of a closed ring and also rotating together with the drum, which is suitably held in tension so as to submit the fabric to a suitably selected pressing action force In such a way the combined effects of the pressing action and of the conversion of water into steam which impregnates the fabric determine the desired fixing of the shape of the fabric.
At the exit from the treatment area the fabric is guided in a cooling area, in particular a basin containing cold water, followed by wringing rollers. It is then fed to a lapping device which deposits the fabric in the form of laps.
Such known machines are not devoid of drawbacks mainly due to the fact that if the treatment temperature were to be raised, as is desirable for a perfect fixing of the form, increasing the back piece pressure and thus its tensioning, there would inevitably occur an expansion of the back piece's rubber material, whose dimensions would go out of control and could even lead to a deterioration of the back piece. In addition, once the fabric has left the fixing area and before reaching the cooling area it can tend to lose the benefits of fixing and to restore at least partially the initial defects.
The main object of the present invention is that of accomplishing a fixing machine which allows-operations at very high temperatures, higher than those currently in use.
A further object is that of accomplishing a fixing machine which allows the fabric issuing from the fixing area to maintain the attained form without problems.
According to the invention such objects are attained with a fixing machine comprising a fabric impregnation/wringing area and a form fixing area including a heated rotating metal drum and a first form fixing back piece, accomplished in waterproof rubber material in the form of a closed ring concordantly rotatable with the drum and having a portion wound on the drum itself and pressed against it with the object of obtaining the compression of the fabric made to pass between drum and first back piece, characterized in that said form fixing area comprises a second closed-ring back piece substantially not yielding to traction, arranged with a portion of it pressing against said portion of the first back piece with a predetermined pressure higher than that with which the first back piece presses against the metal drum.
In such a way the fabric can be strongly pressed and heated to a high temperature without having, in relation to this, to increase the traction of the first back piece and thus without such back piece reaching such tensions at which, given the material with which it is accomplished, it may become damaged.
Moreover, the machine preferably has the second back piece with the exit further back than that of the first back piece.
In such a way there is created in the fabric still pressed by the first back piece a thermal head such as to ensure the fixing of the form.
Again preferably, there is provided at the exit of the fabric from the first back piece a spray of cold water for a further and final fixing of the form.
Lastly preferably the second back piece starts after the entry of the fabric into the first back piece's compression area.
In such a way there is created a preheating area upstream from the superheating area which allows the temperature to be raised in a more uniform manner.
Further features of the present invention shall be made more evident by the following detailed description of an embodiment illustrated as a non-limiting example in the single figure of the encLosed drawling.
With reference to the drawing, the fixing machine comprises an entry area 50 for a fabric 80 to be subjected to form fixing, constituted by tentering feed rollers 1, followed by a fabric impregnation/wringing area 30. Such area 30 comprises a basin 2 containing an Impregnation bath and provided with heat exchangers 3 for heating the bath itself, followed by a pair of rollers 4 for wringing out the liquid contained in the fabric issuing from basin 2.
The fabric thus impregnated and wrung is fed to a form fixing area 40, which comprises a rotating metal drum 6, heated internally by diathermic oil, steam or whatever, and a first and a second form fixing back piece 7, 8, in their turn movable in a manner concordant with and at the same peripheral speed of drum 6. The first back piece 7 is accomplished in a rubber material in the form of a closed ring concordantly rotatable with drum 6, having an operational portion 31 wound on drum 6 itself and pressed on it with the object of obtaining the compression of the fabric made to pass between it and drum 6.
In particular there are provided sliding rollers 11 of said back piece 7, with some of which there are associated tensioning cylinders 12 which by applying tension to the back piece ensure the desired pressure on the fabric. The second back piece 8 is accomplished in a preferably textile material substantially not yielding to traction and has an operational portion 32 pressing against the first back piece 7 with a pressure which is higher than that with which the latter presses against drum 6, so as to define a heating region 60 at a high temperature preceded by a preheating region 9 and followed by a thermal shock region 10 wherein the fabric Is only pressed between drum 6 and the first back piece 7. For back piece 8 there are provided sliding rollers 13 and a tensioning cylinder 14 which ensures a tension corresponding to the pressure which it is desired to impart to back piece 7 and, through this, to the fabric under treatment.
A low temperature water spray 17 is located at the beginning of the exit from the thermal shock region 10; the sprayed water is subsequently collected in an underlying basin 47, where the fabric is immersed prior to leaving the fixing area 40.
With the first back piece 7 there are associated cleaning devices known in themselves, consisting, say, of a brush 15 and a spray 16. There is also provided a cleaning device, in particular a cleaning blade 18, for drum 6.
Downstream from the form fixing area 40 there is a further wringing area 70 consisting of a collection basin 19 and a pair of wringing rollers 20.
At the exit from the machine there is lapping machine, known in itself, such as a roller 21 with an associated oscillating arm 22.
In operation, the fabric 80 is introduced by feed rollers 1 and then immersed in basin 2 and wrung by passing between the pair of wringing rollers 4. At this point it is ready to be subjected to the form fixing operation. It is thus made to pass between back piece 7 and drum 6 and is subjected to a first compression and preheating in region 9, for example up to 105'C. It then enters region 60 of back piece 8, whose tension is selected so that its operational portion 32 exerts on the underlying portion 31 of baGk piece 7 and thus on the fabric 80 a pressure such as to subject the fabric to a high heating temperature, say, 130-C, which in combination with the pressing effect allows the fabric itself to attain the desired form fixing. The fabric then enters region 10, where it returns to a lower pressure and temperature, such as that in the preheating area and determined by the tension of back piece 7, so that it undergoes a thermal shock which ensures the maintenance of the form fixed in the heating area 60, thus preventing the recovery of the fabric. The water spray 17 at low temperature then further cools it for the final stabilization of the form.
The fabric is then made to be immersed in basin 47 before leaving the form fixing area 40 and made to pass between the pair of wringing rollers 20, and lastly folded in superimposed laps by the oscillating arm 22.
Claims (5)
1. Fixing machine comprising a fabric impregnation/wringing area (30) and a form fixing area (40) including a heated rotating metal drum (6) and a first form fixing back piece (7), accomplished in waterproof rubber material in the form of a closed ring concordantly rotatable with the drum (6) and having an operational portion (31) wound on the drum (6) itself and pressed against it with the object of obtaining the compression of the fabric made to pass between drum (6) and first back piece (7), characterized in that said form fixing area (40) comprises a second closed-ring back piece (8) substantially not yielding to traction, arranged with an operational portion of it (32) pressing against said operational portion (31) of the first back piece with a predetermined pressure higher than that with which the first back piece (7) presses against the metal drum (6).
2. Machine according to claim 1, characterized in that said operational portion (32) of the second back piece (8) has an extremity downstream, in the direction of movement of the fabric between drum (6) and the first back piece (7), which is further back with respect to the corresponding extremity downstream from the first back piece (7).
3. Machine according to claim 2, characterized in that it comprises a cooling spray (17) arranged at the downstream extremity of said operational portion (31) of the first back piece (7) with respect to the direction of movement of the fabric.
4. Machine according to claim 1, characterized in that said operational portion (32) of the second back piece (8) has an extremity upstream, in the direction of movement of the fabric between drum (6) and the first back piece (7), which is further forward with respect to the corresponding extremity upstream from the first back piece (7).
5. A fixing machine substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT8921435A IT1230371B (en) | 1989-08-03 | 1989-08-03 | FIXING MACHINE OF A SHAPE PARTICULARLY FOR LANIERI FABRICS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9015131D0 GB9015131D0 (en) | 1990-08-29 |
| GB2234535A true GB2234535A (en) | 1991-02-06 |
Family
ID=11181750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9015131A Withdrawn GB2234535A (en) | 1989-08-03 | 1990-07-10 | Form fixing machine particularly for wool fabrics |
Country Status (2)
| Country | Link |
|---|---|
| GB (1) | GB2234535A (en) |
| IT (1) | IT1230371B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0533295A1 (en) * | 1991-09-19 | 1993-03-24 | SPEROTTO RIMAR S.p.A. | Apparatus for continuous fabric decatizing, and the relative method |
| WO1993017167A1 (en) * | 1992-02-28 | 1993-09-02 | Pietro Alberto | An improved apparatus for continuously decatizing of fabrics on a cylinder with local steam generation |
| WO2006103535A1 (en) * | 2005-03-29 | 2006-10-05 | T.M.T. Manenti S.R.L. | Method and apparatus for fabric calendering |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1404958A (en) * | 1972-02-05 | 1975-09-03 | Kuesters E | Continuous pressure treatment of webs |
| GB1467119A (en) * | 1974-12-02 | 1977-03-16 | Drabert Soehne | Decatizing of fabrics |
-
1989
- 1989-08-03 IT IT8921435A patent/IT1230371B/en active
-
1990
- 1990-07-10 GB GB9015131A patent/GB2234535A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1404958A (en) * | 1972-02-05 | 1975-09-03 | Kuesters E | Continuous pressure treatment of webs |
| GB1467119A (en) * | 1974-12-02 | 1977-03-16 | Drabert Soehne | Decatizing of fabrics |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0533295A1 (en) * | 1991-09-19 | 1993-03-24 | SPEROTTO RIMAR S.p.A. | Apparatus for continuous fabric decatizing, and the relative method |
| US5301521A (en) * | 1991-09-19 | 1994-04-12 | Sperotto Rimar S.P.A. | Apparatus for continuously decatizing a fabric |
| WO1993017167A1 (en) * | 1992-02-28 | 1993-09-02 | Pietro Alberto | An improved apparatus for continuously decatizing of fabrics on a cylinder with local steam generation |
| WO2006103535A1 (en) * | 2005-03-29 | 2006-10-05 | T.M.T. Manenti S.R.L. | Method and apparatus for fabric calendering |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1230371B (en) | 1991-10-18 |
| GB9015131D0 (en) | 1990-08-29 |
| IT8921435A0 (en) | 1989-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |