GB2299593A - Card clothing - Google Patents
Card clothing Download PDFInfo
- Publication number
- GB2299593A GB2299593A GB9506723A GB9506723A GB2299593A GB 2299593 A GB2299593 A GB 2299593A GB 9506723 A GB9506723 A GB 9506723A GB 9506723 A GB9506723 A GB 9506723A GB 2299593 A GB2299593 A GB 2299593A
- Authority
- GB
- United Kingdom
- Prior art keywords
- card clothing
- roller
- strip
- regions
- low tooth
- 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- Withdrawn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
- 239000000463 material Substances 0.000 claims abstract description 29
- 238000009960 carding Methods 0.000 claims abstract description 6
- 239000002699 waste material Substances 0.000 claims description 15
- 238000009489 vacuum treatment Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010407 vacuum cleaning Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
- D01G15/84—Card clothing; Manufacture thereof not otherwise provided for
- D01G15/86—Card clothing; Manufacture thereof not otherwise provided for with flexible non-metallic backing
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
Card clothing 2 for application to a roller 20 to be used for transfer of fibres comprises an elongate strip of backing material and a plurality of carding teeth 8 arranged in an array on the said elongate strip. The teeth are arranged in teethed regions 10 of the strip with low tooth density regions 12 regularly spaced along the strip provided between the teethed regions.
Description
CARD CLOTHING
This invention relates to card clothing such as can be applied to a roller which can then be used to transfer fibres. It includes a roller to which card clothing has been applied and a method of applying card clothing to a roller.
It is well established in the field of textile handling to use rollers provided with card clothing to transfer fibres. Card clothing comprises a backing strip with a plurality of carding teeth arranged in an array on the strip. The strip is wound tightly in a helical fashion around a roller to be clothed, so that the lateral edges of successive turns of the strip tightly abut one another.
The teeth of the card clothing on a roller engage the fibres as the roller rotates, transferring the fibres from a pick-up point to a drop point, for example from a source to which the fibres are supplied in web form, or for example to the needles of a machine used to make fabric from the rollers, or to make yarn from which fabrics can be made knitting or weaving. Such fabrics can be used for wear apparel, in floor coverings and in upholstery. The carded fibres can also be formed into a solid non-woven web which can be treated by needle punching so that it is suitable for use in diapers, for hospital use (for example for surgical use), and in floor coverings.
It is necessary from time to time to clean rollers provided with card clothing of fibre waste material so that the fibres are suitably prepared for subsequent efficient fibre handling with minimum contamination by the waste materials. Such waste materials can flow from coatings applied to the fibre to be handled by the card clothed roller. It is known to use a vacuum treatment to clean card clothed rollers, involving passing a suction head laterally over a roller as it rotates so that waste material on the roller is sucked away. When this cleaning technique is used to clean a roller which as been used to transfer certain fibres, especially silk fibres, it has been found that waste material can accumulate in the nozzle of the suction head, leading to the nozzle being blocked and, when the nozzle is close to the teeth of the card clothing, damage to the teeth.This problem arises in particular when the fibres being handled by the roller are long and have an appreciable ability to withstand tensile loads without breaking. Such fibres can tend to form a continuous strand which can then lead to the formation of a mass of waste material at the suction head.
It has been found that the arrangement of teeth in a regular array of toothed regions of a backing strip, spaced apart by low, especially zero, tooth density regions, can lead to efficient cleaning of a card clothed roller by a vacuum treatment, with reduced risk of accumulation of waste material in the nozzle of the suction head.
Accordingly, in one aspect, the invention provides card clothing for application to a roller to be used for transfer of fibres, which comprises an elongate strip of backing material and a plurality of carding teeth arranged in an array on the said elongate strip, the teeth being arranged in teethed regions of the strip with low tooth density regions regularly spaced along the strip provided between the teethed regions.
A roller with the card clothing of the invention applied to it presents a plurality of regions have a low tooth density regularly spaced along a helical path which extends along the said surface. As the suction head of vacuum treatment apparatus passes transversely across the roller while the roller rotates, fibres and other waste material which tend to form a continuous strand, tend to break when the suction head passes over the low tooth density region of the card clothing.
In this way, the tendency for waste material to accumulate in the suction head of the vacuum treatment apparatus is reduced.
The configuration of the toothed and low tooth density regions of the card clothing will be selected according to factors which include the configuration of the suction head of the vacuum treatment apparatus, the type of fibres with which the card clothing is intended to be used, the configuration (in particular its diameter and its width) of the roller to which the card clothing is to be applied and so on.The configuration of the card clothing can be varied in terms of the width of the strip of backing material, the length of the toothed regions (measured along the longitudinal axis of the strip), the length of the low tooth density regions, the ratio of the length of the toothed region to that of the low tooth density region, the length of the teeth (measured along the teeth from the surface of the backing material from which they protrude), and the configuration of the teeth (principally the shape of bends in the teeth and the position of the bends along the length of the teeth).
Preferably, the ratio of the length of the teethed regions to that of the low tooth density regions is at least about 5, more preferably at least about 10, especially at least about 15.
Preferably, the length of the teethed regions to that of the low tooth density regions is not more than about 75, more preferably, not more than about 50. The ratio could for some applications be greater or less than these preferred values.
Preferably, the length of the low tooth density regions of the strip is at least about 3 mm, more preferably at least about 6 mm, especially at least about 10 mm. The said length is preferably not more than about 60 mm, more preferably not more than about 30 mm, especially not more than about 20 mm. A suitable length of the low tooth density region of the strip is roughly between 10 and 15 mm.
Preferably, the length of the toothed regions of the strip is at least about 10 cm, more preferably at least about 15 cm.
Preferably, the said length is not more than about 60 cm, more preferably not more than about 45 cm.
The term "cycle length" of the toothed and low tooth density regions of the strip is used to refer to the length of one toothed region and an adjacent low tooth density region.
Preferably, the cycle length is at least about 15 cm, more preferably at least about 20 cm. Preferably, the said cycle length is not more than about 50 cm, more preferably not more than about 40 cm. For example, the cycle length might be roughly in the range of 25 to 35 cm.
It will be understood that the so-called "low tooth density" regions of the strip need not necessarily be entirely free of carding teeth. Generally, the density of teeth in the low tooth density regions will be at least sufficiently low for the amount of waste material collected in the low tooth density regions to be low enough for strands of waste material formed when the vacuum cleaning treatment is used to break when the suction head passes over the low tooth density regions. It can be appropriate for some applications for there to be substantially no teeth in the low tooth density regions of the strip. A strip with this configuration can be made by providing a backing strip with teeth over its entire area, and then removing teeth from the regions intended to be tooth=free regions. Other manufacturing techniques which can be used might leave a low proportion of teeth in the low tooth density regions. For example, the card clothing might be made using conventional apparatus for inserting teeth into a moving strip of the selected backing material, modified so that the speed with which the backing material moves through the apparatus can be changed selectively. A lower density of teeth can be achieved by causing the strip to move quickly through the apparatus. The modifications to the apparatus necessary to enable the speed of the backing strip to be changed can involve simply the use of a variable speed motor with appropriate control apparatus, preferably which can be programmed.
The width of the strip will often be at least about 30 mm, especially at least about 45 mm. It will generally be less than about 75 mm, especially less than about 65 mm. For example, the width will preferably be in the range from about 45 to about 65 mm.
The backing material of the strip will be selected according to the application for the card clothing. It can be preferred for many applications for the backing strip to include a quantity of a material that can be compressed along an axis perpendicular to the plane of the sheet. For example, the backing material might include a layer of an elastomeric material, especially a rubber. The backing material can comprise a plurality of materials, especially provided in layers. For example, the backing material might comprise a laminate of a fabric base and a compressible rubber layer.
Preferably, the length of the teeth, measured along the teeth from the surface of the backing material from which they protrude, is at least about 2 mm, more preferably at least about 4 mm. The said length is preferably not more than about 12 mm, more preferably not more than about 10 mm. The teeth will generally extend from the surface of the backing sheet inclined at an angle to the surface that is less than 900, for example less than about 75". The teeth will generally be bent at a point along their length, for example through an angle of at least about 5 , more preferably at least about 80. The bend can be at a point at least about 20k of the distance from the surface of the backing material to the end of the teeth, preferably at least about 35% of that distance.
In another aspect, the invention provides a roller to which card clothing has been applied so that the roller can be used to transfer fibres, the card clothing being as described above.
Preferably, the diameter of the roller is at least about 25 cm, for example from about 30 cm. Preferably, the said diameter is not more than about 3 m, for example upto about 2 m.
In a further aspect, the invention provides a method of applying card clothing to a roller for subsequent use to transfer fibres, which comprises helically wrapping card clothing as discussed above around the roller to provide an array of teeth over the surface of the roller, with a plurality regions which have a low tooth density regularly spaced along a helical path which extends along the said surface.
In yet another aspect, the invention provides a method of cleaning a roller to which card clothing has been applied, the card clothing providing an array of teeth over the surface of the roller, with a plurality regions which have a low tooth density regularly spaced along a helical path which extends along the said surface, the method comprising passing the suction head of vacuum treatment apparatus transversely over the surface of the roller as it rotates, the suction head passing over toothed and low tooth density regions of the card clothing so that waste material sucked from the surface of the roller by the vacuum treatment apparatus does not form a continuous strand.
Preferably, the vacuum treatment apparatus comprises a suction head that is at least as wide as the strip of the card clothing, more preferably that is at least 10 mm wider than the said strip.
The present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a schematic illustration in plan of a strip
of the card clothing of the invention,
Figure 2 is an enlarged view of the portion of the card
clothing shown in Figure 1 labelled II, and
Figure 3 is an isometric view of a roller to which the
card clothing shown in Figures 1 and 2 has been applied.
Referring to the drawings, Figures 1 and 2 show card clothing 2 whose backing material comprises a laminate of a fabric base 4 and a layer 6 of a compressible rubber material. A plurality of carding teeth 8 extend through the backing material. Each tooth is formed as one of a pair which are inserted into the backing material and then extend from the surface of the backing material. The teeth extend from the surface of the backing material at an angle of about 75" to the surface, generally parallel to one another. Each tooth is bent through about 100, at a point approximately 20% of the distance between the surface of the backing material and the tip of the tooth.
The backing material is about 56 mm wide. The combined thickness of the fabric and rubber layers is about 3 mm. The length of the teeth, measured along their length from the surface of the backing material from which they extend to their tips, is about 6 mm.
The strip is divided into toothed regions 10 and low tooth density regions 12. Each toothed region is about 30 cm long and each low tooth density region is about 1 cm long. The low tooth density regions are formed during insertion of the teeth 8 into the backing material be increasing the speed with which the backing material passes through the apparatus by which the teeth are inserted into the material. This results in the formation of regions of the strip in which the density of teeth is reduced compared with the so-called toothed regions.
The card clothing 2 is applied to a roller 20 by helically wrapping it around the roller tightly with the lateral edges of adjacent turns tightly abutting one another. An advantage of using applying card clothing as a helically wound strip is that the tension can be maintained in the card clothing when wrapped around the roller. The tension can be maintained in the card clothing because of the resilience arising from the incorporated layer 6 of rubber. The maintained tension in the card clothing facilitates efficient vacuum cleaning because there is reduced tendency for the vacuum to cause the card clothing to lift off the roller causing the teeth of the card clothing to interfere with the suction head of the vacuum treatment apparatus.
As shown in Figure 3, the card clothing 2 presents an array of teeth over the surface of the roller 20 when wrapped around it, with a plurality regions 22 which have a low tooth density regularly spaced along a helical path which extends along the said surface, the path being defined by the helical turns of the strip.
The clothed roller can be used to transfer fibres as a part of a fibre handling process, for example to transfer them from a source to which the fibres are supplied in web form, or to the needles of a machine used to make fabric from the rollers, or both. Waste material which accumulates in the teeth on the rollers can be removed by means of vacuum treatment apparatus involving a suction head which traverses the roller as it rotates. Waste material which can tend to form strands as it is sucked from the teeth is broken when the suction head passes over the low tooth density regions 22 of the roller.
Claims (19)
1. Card clothing for application to a roller to be used for transfer of fibres, which comprises an elongate strip of backing material and a plurality of carding teeth arranged in an array on the said elongate strip, the teeth being arranged in teethed regions of the strip with low tooth density regions regularly spaced along the strip provided between the teethed regions.
2. Card clothing as claimed in claim 1, in which the ratio of the length of the teethed regions to that of the low tooth density regions is at least about 5.
3. Card clothing as claimed in claim 2, in which the ratio of the length of the teethed regions to that of the low tooth density regions is at least about 10.
4. Card clothing as claimed in any one of claims 1 to 3, in which the length of the teethed regions to that of the low tooth density regions is not more than about 75.
5. Card clothing as claimed in any one of claims 1 to 4, in which the length of the teeth, measured along the teeth from the surface of the backing material from which they protrude, is at least about 2 mm.
6. Card clothing as claimed in claim 5, in which the length of the teeth, measured along the teeth from the surface of the backing material from which they protrude, is not more than about 12 mm.
7. Card clothing as claimed in any one of claims 1 to 6, in which the length of the low tooth density regions of the strip is at least about 3 mm.
8. Card clothing as claimed in claim 7, in which the length of the low tooth density regions of the strip is at least about 10 mm.
9. Card clothing as claimed in any one of claims 1 to 8, in which the length of the low tooth density regions of the strip is not more than about 60 mm.
10. Card clothing as claimed in claim 9, in which the length of the low tooth density regions of the strip is not more than about 30 mm.
11. Card clothing as claimed in any one of claims 1 to 10, in which the cycle length of the toothed and low tooth density regions of the strip is not more than about 60 cm.
12. Card clothing as claimed in claim 11, in which the cycle length of the toothed and low tooth density regions of the strip is not more than about 40 cm.
13. Card clothing as claimed in any one of claims 1 to 12, in which the cycle length of the toothed and low tooth density regions of the strip is at least about 10 cm.
14. Card clothing as claimed in claim 13, in which the cycle length of the toothed and low tooth density regions of the strip is at least about 20 cm.
15. A roller to which card clothing has been applied so that the roller can be used to transfer fibres, the card clothing being as claimed in any one of claims 1 to 14.
16. A roller as claimed in claim 15, in which the diameter of the roller is at least about 25 cm.
17. A roller as claimed in claim 15 or claim 16, in which the diameter of the roller is not more than about 3 m.
18. A method of applying card clothing to a roller for subsequent use to transfer fibres, which comprises helically wrapping card clothing as claimed in any one of claims 1 to 14 around the roller to provide an array of teeth over the surface of the roller, with a plurality regions which have a low tooth density regularly spaced along a helical path which extends along the said surface.
19. A method of cleaning a roller to which card clothing has been applied, the card clothing providing an array of teeth over the surface of the roller, with a plurality regions which have a low tooth density regularly spaced along a helical path which extends along the said surface, the method comprising passing the suction head of vacuum treatment apparatus transversely over the surface of the roller as it rotates, the suction head passing over toothed and low tooth density regions of the card clothing so that waste material sucked from the surface of the roller by the vacuum treatment apparatus does not form a continuous strand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9506723A GB2299593A (en) | 1995-03-31 | 1995-03-31 | Card clothing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9506723A GB2299593A (en) | 1995-03-31 | 1995-03-31 | Card clothing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9506723D0 GB9506723D0 (en) | 1995-05-24 |
| GB2299593A true GB2299593A (en) | 1996-10-09 |
Family
ID=10772299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9506723A Withdrawn GB2299593A (en) | 1995-03-31 | 1995-03-31 | Card clothing |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2299593A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011003743A1 (en) | 2009-07-10 | 2011-01-13 | Staedtler+Uhl Kg | Circular comb fitting |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB302839A (en) * | 1928-02-28 | 1928-12-27 | T F Firth & Sons Ltd | Improvements in card clothing for the rollers of scribbling and carding machines |
| GB424515A (en) * | 1933-11-07 | 1935-02-22 | W A Openshaw Ltd | Improvements in carding engines for producing slub yarns |
| GB733363A (en) * | 1951-12-06 | 1955-07-13 | Anciens Ets P Destombes | Improvements in and relating to card flat clothing |
| GB872151A (en) * | 1957-06-07 | 1961-07-05 | Rieter Joh Jacob & Cie Ag | Improvements relating to arrangements of needles of cylindrical combs of textile combing machines |
| GB1500106A (en) * | 1975-04-24 | 1978-02-08 | Kanai H | Top card clothing |
| GB2132650A (en) * | 1982-12-30 | 1984-07-11 | Textima Veb K | A teeth-fitting for carding elements on a card |
| EP0143174A2 (en) * | 1983-09-29 | 1985-06-05 | Graf & Cie. A.-G. | Flat-clothing for carding machines |
| EP0382899A1 (en) * | 1989-02-11 | 1990-08-22 | Staedtler & Uhl | Clothing for combing cylinders, especially for wool and cotton combing machines |
-
1995
- 1995-03-31 GB GB9506723A patent/GB2299593A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB302839A (en) * | 1928-02-28 | 1928-12-27 | T F Firth & Sons Ltd | Improvements in card clothing for the rollers of scribbling and carding machines |
| GB424515A (en) * | 1933-11-07 | 1935-02-22 | W A Openshaw Ltd | Improvements in carding engines for producing slub yarns |
| GB733363A (en) * | 1951-12-06 | 1955-07-13 | Anciens Ets P Destombes | Improvements in and relating to card flat clothing |
| GB872151A (en) * | 1957-06-07 | 1961-07-05 | Rieter Joh Jacob & Cie Ag | Improvements relating to arrangements of needles of cylindrical combs of textile combing machines |
| GB1500106A (en) * | 1975-04-24 | 1978-02-08 | Kanai H | Top card clothing |
| GB2132650A (en) * | 1982-12-30 | 1984-07-11 | Textima Veb K | A teeth-fitting for carding elements on a card |
| EP0143174A2 (en) * | 1983-09-29 | 1985-06-05 | Graf & Cie. A.-G. | Flat-clothing for carding machines |
| EP0382899A1 (en) * | 1989-02-11 | 1990-08-22 | Staedtler & Uhl | Clothing for combing cylinders, especially for wool and cotton combing machines |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011003743A1 (en) | 2009-07-10 | 2011-01-13 | Staedtler+Uhl Kg | Circular comb fitting |
| CN102482805A (en) * | 2009-07-10 | 2012-05-30 | 施泰德勒和乌尔两合公司 | circular comb fitting |
| CN102482805B (en) * | 2009-07-10 | 2014-06-25 | 施泰德勒和乌尔两合公司 | circular comb fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9506723D0 (en) | 1995-05-24 |
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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) |