GB2225313A - Web feed - Google Patents
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- Publication number
- GB2225313A GB2225313A GB8926163A GB8926163A GB2225313A GB 2225313 A GB2225313 A GB 2225313A GB 8926163 A GB8926163 A GB 8926163A GB 8926163 A GB8926163 A GB 8926163A GB 2225313 A GB2225313 A GB 2225313A
- Authority
- GB
- United Kingdom
- Prior art keywords
- web
- course
- woven
- woven web
- carrier
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G25/00—Lap-forming devices not integral with machines specified above
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Nonwoven Fabrics (AREA)
- Advancing Webs (AREA)
- Paper (AREA)
- Preliminary Treatment Of Fibers (AREA)
- Display Devices Of Pinball Game Machines (AREA)
- Electrically Operated Instructional Devices (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
Description
22253 '13 11. - 1 - APPARATUS FOR APPLYIMG A NON-WOVEN WEE TO A L_
CONCURRENT. t3 4Y MOVING CARRIER WEE
BACKGROUND OF THE INVENTION
Field of the Invention
This invention relates to an apparatus for applying a non-woven web to a moving carrier web, cam prising a feeder for feeding the non-woven web at a con trollablE feeding speed.
Description of the Prior Art it may be desired to apply a non-woven we= in a plurality of juxtaposed convolutions to a carrier web, which is usually endless and,rEvolving, and the several convolutions may be desired to exactly adjoin each other or to overlap each other in a predetermined width. In that case that portion of the non-woven web whiCh is beina fed to the carrying web must have at le=-sz approximately straight longitudinal edges. For that purpose the non-woven web is trimmed at its longitudinal edQes before the non-woven web is applied to th e carriar web. But it has been found in practice that such edge trimming of the nonwoven web which is moving toward the carrier web will not be sufficient to ensure that the non-wavEn web which has been deposited on the carrier Led has straight edges. This is due to the fact that the extErnal loads applied to the non-woven web and its in- 33 herent stresses may result in a non-predictable distortion of the non- woven web because the latter has only a low intrinsic strenoth.
J -09 Summary of the Invention
For this reason it is an object of the invention to avoid said disadvantages and to provide an apparatus which can be used to apply a non-waven w.i2b with straight longitudinal edges to a moving carrier web.
In an apparatus which is of the kind described first hereinbefore and serves to apply a non-woven web to a carirer web movino in the same direction that object is accomplished in accordance with the invention in that the feedino speed of the feeder for the non-woven weo is adapted to be controlled in dependence on the distance between the carrier web and an unguided course of the non-woven web extending between the carrier web and preceding guiding means.
The invention is based an the recoonition that when an edne-trimmed course of the nun-wov2n ideb is being fed to the carrier web said course may be subjected to a tensile stress which will determine the configuration of the longitudinal edges of said course and way compensate the inherent stresses existing in said non-woven web so that the load on said course w"ill be subjected to a uniform loading and as a result said course will reliably have straight longitudinal edges. That extErnal loading will be applisd in that said course of the non-woven web is entrained by the carrier web apainst the resistance presented by the feeder and said loading can 3G be controlled by a control of the ratio of the soeed at which the non- woven web is fed by the feeder and the speed at which the non-woven web is entrained by the carrier web. eut it must be borne in mind that the tensile stress which is produced in that said course of said non-wcven web is oulled from the feeder by the carrier web cannot be -W -1\ measured in said course of non-uoven web so that the means usually employed to measure tensile stresses in a web cannot be Used in that case because they cannot perform a non-contactino measurement of the tensile stresses and the non-woven web has such a low intrinsic strength that an additional loading by such measuring means would not be permissible. For this reason it is proposed by the invention that the distance between said course of the non-woven web and the carrier web is used as a measure of the effective tensile stresses when said course is not guided between the carrier tijab and ouiding means which precede the carrier web. Such a dEtermination can simply be effected in a non-contactinn manner with an adequate accuracy. Upon an increase of the ten- sile stress the point at which said course of th2'nonwoven web first contacts the carrier web will move further away from the guiding meens.. Upon a decrease of the tensile stress that point of initial contact willmcve Closer to the ouidino means. The distance between the carrier web and the unguided course of the non-woven web will similarly increase or decrease. It is apparent that chances of the distance between the carrier web and the unguided course of the non-woven web extending between the carrier Web and the preceding guiding means will reflect chanoes of the tensile stress in said course of the nonwoven web and the determination of said distance may be used for an automatic control of the feeding speed of the feeder by a comparison of desired and actual values. As a result, the said course of the nun-woven web will be delivered wilth straight longitudinal edges to the carri web.
er In accordance with a further feature of the invention the changes of the distance of the unguided course of the nonwoven web from the carrier web may be 41 effected by the provision of at least one sensor for measuring the distance between a point of reference and a portion of said unguided course of the non-woven web, which portion is disposed between the delivery end of the guiding means and the carrier web because the distance to be measured will be reflected with adequate accuracy from the position of a portion of the unguided course cf the non-woven web and a stationary point of reference. in such case a particularly simple design will be obtainet if the point of reference is constituted by the sensor and it will be sufficient for the desired result to dEtect the deviation of said unguided course of the non- -woven web from. a desired position and to return the norWOV2n web to its desired position in dependence on that detection.
This can be accomplished in that two senscrs for detecting a deviation of the distance from an upper limit and a lower limit, respectively, are provided so that the sense of the deviation can be detected in a simple manner. The same object can be accomplished by the.provision of a single sensor, e.g., if the sensor comprises a receiver for a light ray which has been rEflectEd from the surface of the unguided course'of the non-waven web, if the deflection of that light ray Is dE tacted, which deflection will depend an the distance fror the sensor to the illuminated surface of the unnuidEd course of the non-hjaven web. That deflection will indi only the amount of the change of the distance zul.
cate not also the direction of said channE.
Brief Description of the Drawing
Ficure 1 is a discrammatic side elevation showinc an apmeratus in accordance with the invention f:)r 411 3 0 applying a non-woven web to a concurrentIV moving carrier web.
Figure 2 is an enlarged and simplified side elevation showing a device for detecting changes of the position of the unguided course of the non-woven web.
Figure 3 is a front elevation showing the apparatus of Figure 2.
Detailed Description of the Preferred Embodiment
An illustrative embodiment of the invention will now be described more in detail with reference to the drawino.
The aDparatus which is illustrated by way of example in Figure 1 and serves for applying a nonwoven web 1 to a concurrently moving carrier web 2 com- prises a feeder 3 for the non-woven web. That feeder is mounted on a carriage 4, which is reciarocable over the width of the carrier web 2 an a slide track 5, which is transverse to the carrier web 2. A device for unwindino the non-woven web from a roll thereof is associated with the feeder 3 and is not shown for the sake of clearness. The non-woven web is unwound from such roll and is fed by a belt conveyor G to an edgetrimming device 7, which comprises laterally disposed cutter disks 8 for trimming the non-woven web 1 at its longitudinal edges. The adgetrimmed non-woven web 1 is then delivered over a delivery roller 9 to the endless carrier web 2, which revolves around reversing pulleys 10. During said delivery to the carrier weli 2, the edge-trimmed non-woven web is guided by guiding means 11, wnich deflect the nan-woven web and consist of a roller, a rid or a tube. As a result ( 11 the non-woven web has between the carrier web 2 and the preceding guiding means 11 an unguided course 12 and th3 distance from said course to the carrier web 2 will depend an the tensile stresses which are due to the fact that the non-woven web is pulled by the carrier web 2 from the feeder 3 so that the non-woven web.can than continually be needled onto the carrier web 2. Said tensile stresses will be determined by the ratio of the feeding speed of the feeder 3 and the speed at which the non- woven w&b is pulled, which latter speed is determined by the speed at which the carrier web 2 revolves. Said ten sile stresses may be controlled by a control of that speed ratio in that the feeding speed of the feeder 3 is correspondingly adjusted. The feeding speed Of the feeder will depend on the speed at which the belt COnV2yor 6 revolves and on the speed of the delivery roller 9, which is operatively connected to the belt conveyor 6 and to gether with the belt conveyor is driven by a chain drive 13 from a controllable conveyor drive, which is not shown.
For an adjustment and control of th=- tensile stresses which are required to ensure a straight cconfiguration of the lonnitudinal ednes of the nonwcv.En web 1, the distance of the unquided coursa 12 of the non-weven 25web extending between the guiding neans 11, which directly arecedes the carrier web 2 and the paint 14 at which the non-woven web 1 initially contacts the carrier web 2, is monftored by a device 15 for detecting the position of the unguidEd course 12 of the non-woven web. In the illustratEd embodiment that aDparatus comcri-ses two sensors 16, each of which comprises a receiver for a licht ray 17, which has been reflected by the surface of the course 12 of the ncn-waven web. c-aid sensors define an uocer li-mit and a lower limit, respectively, for the position of the ccurse 12 of the non-woven web. If the position:f tha -1 1 A, is course 12 of the non-woven web is outside the ranne defined by said two limits, the resulting change cf the deviation of the deflected light ray 17 will result in response of that sensor 16 which has been adju sted to the limit which has been exceeded and said sensor will then deliver a control sional for adjusting the nnveyor drive for the feeder 3 in the sense of a return of the course 12 of the non-woven web to the range of desired positions. As a result, uniform tensile stress condi- tions in that course of the non-woven web which is delivered to the carrier web can be ensured. This is an essential requirement for an application of the nonwoven web I with straight longitudinal edges to the carri2r web 2.
The upper and lower limits of the d2sired positions of the course 12 of the non-woven web should be predetermined and adjusted in dependence an the conditions existing in each case. The sensors themselves need not be changed for a corresponding adjustment but it will be possible to maintain the sensors adjusted t-the predetermined limits and to adjust the position of the sensors so that the distances from the senEo--s to the desired position of the course of the non-wcvan wad correspond to the adjusted limits.
It will be understood that the invention is not restricted to the embodiment shown by way of Example. For instance, different sensors may be used to detect the 3G position of the course 12 of the on-wovEn web beCausz it is necessary to detect the position of the course of the non-woven web regardless of the means by which the position of the course 12 of the non-woven web is detected.
1 -A
Claims (6)
1. An apDaratus for applying a non-woven web to a moving carrier web, comprising a feeder for feeding the non-woven web at a controllable feeding speed, characterized in that the feeding speed of the feeder for the non-woven web is adapted to be controlled in dependence an the distance between the carrier web and an unquided course of the non-woven web extendino between the carrier web and preceding guiding means.
2. An aaaaratus according to claim 1, characterized in that at least one sensor is provided for measuring the distance between a point of referenCE and a portion of said unguided course of the non-tijoven web, which portion is disposed between the delivery end of the guiding means and the carrier web.
3. An apparatus according to claim 2, characterized in that the point of reference is constituted by the sensor.
4. An apparatus according to any of claims 1 to 3, characterized in that two sensors are provided for dEtecting a deviation of the position of the unquided course of the non-woven web from an upper limit and a lower limit, respectively.
5. An ariparatus according to any of claims 3J 2 to 4, characterized in that the sensor comprises a raceiver for a light ray which has been reflected from the surface of the unnuided course of the nun-woven web.
33 5
6. An aoparatus for applying a non-woven to a concurrently movinp carrier web, substantially as -u4=-scribad hereinbefore with reference to the drawino.
Published 1990&tThePatentOff1oe,Sts;W House,68/71 High HolbornLondonWC1R 4TP. Further copies maybe obtainedfrom The PatentOffice. Wes Branch, St Mary Cray, Orpington, Kent BR5 3RD. Printed by Multiplex techniques ltd, St Mary Cray, Kent, Con. 1/87 1
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0286088A AT391677B (en) | 1988-11-22 | 1988-11-22 | DEVICE FOR THE SENSUAL APPLICATION OF A FLEECE TAPE ON A MOVING CARRIAGE RAIL |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8926163D0 GB8926163D0 (en) | 1990-01-10 |
| GB2225313A true GB2225313A (en) | 1990-05-30 |
| GB2225313B GB2225313B (en) | 1992-11-04 |
Family
ID=3541456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8926163A Expired - Lifetime GB2225313B (en) | 1988-11-22 | 1989-11-20 | Apparatus for applying a non-woven web to a concurrently moving carrier web |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPH0815971B2 (en) |
| AT (1) | AT391677B (en) |
| DE (1) | DE3937652C2 (en) |
| FR (1) | FR2639365B1 (en) |
| GB (1) | GB2225313B (en) |
| IT (1) | IT1236132B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10060714A1 (en) * | 2000-12-07 | 2002-06-13 | Heidelberger Druckmasch Ag | Roller pair arrangement |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5268076A (en) * | 1990-06-13 | 1993-12-07 | Thomas Josef Heimbach Gmbh & Co. | Spiral wound papermaking-machine felt |
| AT393389B (en) * | 1990-06-22 | 1991-10-10 | Fehrer Textilmasch | DEVICE FOR THE SENSUAL APPLICATION OF A FLEECE TAPE ON A MOVING CARRIAGE RAIL |
| AT399520B (en) * | 1991-09-16 | 1995-05-26 | Fehrer Textilmasch | DEVICE FOR APPLYING A FLEECE TAPE ON AN ENDLESS CONTINUOUS CARRIER |
| AT396125B (en) * | 1991-09-16 | 1993-06-25 | Fehrer Textilmasch | DEVICE FOR APPLYING A FLEECE TAPE ON AN ENDLESS CONTINUOUS CARRIER |
| US5969078A (en) * | 1997-08-29 | 1999-10-19 | Freecom Inc. | Compositions and methods for a protective surface coating useful to repair damaged surfaces |
| US5936022A (en) * | 1997-08-29 | 1999-08-10 | Freecom, Inc. | Compositions and methods for a high performance protective coating |
| DE19820585A1 (en) * | 1998-05-08 | 1999-11-11 | Voith Sulzer Papiertech Patent | Application method and device |
| MXPA03011119A (en) * | 2001-06-04 | 2004-12-06 | Novaflame Pty Ltd | Candles with coloured flames. |
| CN106144725A (en) * | 2015-04-09 | 2016-11-23 | 安徽凤凰松包装有限公司 | One prevents from packing word bomb winding apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3721376A (en) * | 1971-05-03 | 1973-03-20 | Piedmont Eng And Machine Co In | Tensionless variable feed system for a traveling strip |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2295327A (en) * | 1939-04-13 | 1942-09-08 | Westinghouse Electric & Mfg Co | Loop control system |
| DE953564C (en) * | 1954-05-08 | 1956-12-06 | Siemens Ag | Monitoring device |
| GB939276A (en) * | 1961-08-18 | 1963-10-09 | Express Patent Company Liverpo | Improvements in or relating to cloth-layering machines |
| DE1800051C3 (en) * | 1967-10-03 | 1978-05-03 | Deutsche Semperit Gmbh, 8000 Muenchen | Device for separating two webs of material adhering to one another |
| US3782649A (en) * | 1973-01-22 | 1974-01-01 | Cutters Machine Co Inc | Tensionless cloth feeding apparatus for cloth spreading machine |
| DE2543839B1 (en) * | 1975-10-01 | 1976-11-25 | Graf & Co Ag | DEVICE FOR CREATING A UNIFORM TEXTILE FIBER TAPE |
| DE3031312A1 (en) * | 1980-08-20 | 1982-04-01 | W. Schlafhorst & Co, 4050 Mönchengladbach | Sliver drawing and collection unit - has monitored sliver store to control transport speed for sliver consistency |
| JPH0635297B2 (en) * | 1987-05-08 | 1994-05-11 | 株式会社エヌシ−エ− | Unraveling method and unraveling device in spreading machine |
| JPH0798603B2 (en) * | 1987-05-08 | 1995-10-25 | 株式会社エヌシーエー | Spreading machine |
-
1988
- 1988-11-22 AT AT0286088A patent/AT391677B/en not_active IP Right Cessation
-
1989
- 1989-11-11 DE DE3937652A patent/DE3937652C2/en not_active Expired - Fee Related
- 1989-11-20 GB GB8926163A patent/GB2225313B/en not_active Expired - Lifetime
- 1989-11-21 JP JP1300974A patent/JPH0815971B2/en not_active Expired - Lifetime
- 1989-11-21 FR FR898915264A patent/FR2639365B1/en not_active Expired - Lifetime
- 1989-11-21 IT IT01260189A patent/IT1236132B/en active IP Right Grant
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3721376A (en) * | 1971-05-03 | 1973-03-20 | Piedmont Eng And Machine Co In | Tensionless variable feed system for a traveling strip |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10060714A1 (en) * | 2000-12-07 | 2002-06-13 | Heidelberger Druckmasch Ag | Roller pair arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2639365B1 (en) | 1992-09-11 |
| GB2225313B (en) | 1992-11-04 |
| IT1236132B (en) | 1993-01-08 |
| IT8912601A0 (en) | 1989-11-21 |
| JPH0815971B2 (en) | 1996-02-21 |
| AT391677B (en) | 1990-11-12 |
| ATA286088A (en) | 1990-05-15 |
| DE3937652A1 (en) | 1990-05-23 |
| FR2639365A1 (en) | 1990-05-25 |
| DE3937652C2 (en) | 1994-03-31 |
| JPH02188357A (en) | 1990-07-24 |
| IT8912601A1 (en) | 1991-05-21 |
| GB8926163D0 (en) | 1990-01-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20011120 |