EP0301767B1 - Improved method and apparatus for dispensing web material from a roll - Google Patents
Improved method and apparatus for dispensing web material from a roll Download PDFInfo
- Publication number
- EP0301767B1 EP0301767B1 EP88306740A EP88306740A EP0301767B1 EP 0301767 B1 EP0301767 B1 EP 0301767B1 EP 88306740 A EP88306740 A EP 88306740A EP 88306740 A EP88306740 A EP 88306740A EP 0301767 B1 EP0301767 B1 EP 0301767B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roll
- web
- nip
- stand
- region
- 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
- 239000000463 material Substances 0.000 title claims abstract description 72
- 238000000034 method Methods 0.000 title claims description 14
- 239000000853 adhesive Substances 0.000 claims description 16
- 230000001070 adhesive effect Effects 0.000 claims description 15
- 239000002699 waste material Substances 0.000 claims description 12
- 239000012945 sealing adhesive Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 10
- 239000012790 adhesive layer Substances 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000004900 laundering Methods 0.000 description 1
- 239000003094 microcapsule Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
- A47K10/32—Dispensers for paper towels or toilet-paper
- A47K10/34—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means
- A47K10/36—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices
- A47K10/3687—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means with mechanical dispensing, roll switching or cutting devices with one or more reserve rolls
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
- A47K10/28—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven dispensing a clean part and taking-up a soiled part, e.g. using rolls; with dispensers for soap or other detergents; with disinfecting or heating devices
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K10/00—Body-drying implements; Toilet paper; Holders therefor
- A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
- A47K10/32—Dispensers for paper towels or toilet-paper
- A47K10/46—Dispensers for paper towels or toilet-paper with means for storing soiled towels
Definitions
- the present invention relates to a method of and apparatus for dispensing web material from a roll.
- Cabinets which contain rolled-up web material are inspected periodically to check if the roll of web material has been used up and needs replacing. There is thus the possibility of a delay occurring between the exhaustion of the roll available for use and the next inspection. This has the disadvantage that a cabinet may be out of service for a period causing possible inconvenience to potential users of the web material.
- the present invention seeks to overcome or reduce the above-noted disadvantage.
- GB-A-774,970 proposes a dispensing device for roller towels in which a first unit with one towel is arranged above a second until with a stand-by towel, the stand-by towel being made available for use after the said one towel has been used up.
- the attendant When inspecting the status of such a dispensing device, the attendant must either replace the towels in both units, which means that part of the discarded stand-by towel is never used, or else replace the towel in the first unit and recover the unused portion of the stand-by towel which is a time-consuming operation that means a smaller length of stand-by towel is available when the new towel in the first unit is also used up.
- EPA-A-0172667 discloses a roller towel dispenser which comprises first and second means for mounting respective main and stand-by rolls of web material, first detecting means for detecting when the main roll is exhausted, and first control means responsive to said first detecting means for allowing dispensing of web material from the stand-by roll on the second mounting means, a second detecting means for detecting when the stand-by roll is exhausted, and second control means responsive to said second detecting means for allowing dispensing of web material from a new roll on the first mounting means.
- the arrangement described in EP-A-0172667 has the advantage that it can provide a continuous supply of web material with the entire length of every roll of web material being used.
- the dispenser described in EP-A-0172667 has the rolls disposed side-by-side thus doubling the width of the web dispenser. This can be an inconvenience
- GB Patent 1590048 describes a roller towel dispenser comprising main and stand-by rolls of web material, the main roll being mounted above the stand-by roll and material from the main roll being drawn through an open nip comprising two rollers which contains the leading end of the stand-by roll.
- One of the nip rollers is mounted on a spring-urged lever, the end of which is in contact with the web material leaving the main roll. Exhaustion of the material on the main roll causes the lever to pivot, thereby closing the nip and drawing the leading end of the stand-by roll through the nip together with the trailing end of the main roll.
- This invention relates to a method of automatically securing the leading end of a web on a stand-by roll to the trailing end of a web on the main roll, the web from the stand-by roll following the same course taken by the web from the roll which has just become exhausted so that the two mountings are used alternately for the main and stand-by rolls.
- a method for dispensing web material first from a main roll and then from the stand-by roll comprises drawing the web from the main roll through a nip containing the leading end of web from the stand-by roll, and providing a region of the web of the main roll adjacent to the trailing end thereof with an enhanced coefficient of friction to the leading end of the web from the stand-by roll so that as the said region is drawn through the nip, the stand-by web is advanced with the main-roll web.
- the region of enhanced coefficient of friction is provided at least in part by a layer of adhesive material.
- Adhesive material can be applied on one face of the main-roll web and a layer of material to which the adhesive material will not adhere (herein referred to as a "release" material) can be applied on the opposite face of the main roll web such that in the main roll, the release layer confronts the layer of adhesive material preventing adhesion between adjacent turns of the main roll web close to the trailing end thereof.
- a strip of double-sided self-adhesive plastics tape can be applied to the outer face of the main roll web over a short length thereof close to the trailing end and a length of plastics release tape coated with adhesive on just one side and somewhat longer than said short length can be stuck to the opposite face of the main roll web in the vicinity of the double-sided self-adhesive tape.
- the web along, and in the immediate vicinity of, its trailing edge in both the main- and stand-by rolls can be coated with a narrow transverse strip of non-setting adhesive material and the core of the roll (around which the web is wound) can be treated with release material.
- a region at the trailing end of the web in the main roll and a region at the leading end of the web in the stand-by roll are each coated with adhesive material (which can be dried or set) which sticks one region to the other but neither region to other areas of the webs.
- adhesive material which can be dried or set
- Such material can be applied on both sides of the web at each end in each roll whereby the leading end of the web in the stand-by roll waits in the nip (unmoved by the frictional drag with uncoated web material from the main roll) until a second strip of self-sealing adhesive material enters the nip with the trailing end of web in the main roll whereupon a self-sealing action occurs between the two strips of adhesive material, tagging the two webs together.
- a friction-enhancing material e.g. an adhesive
- a friction-enhancing material is microencapsulated in one or more regions adjacent to the trailing end of the web in each roll, whereby when a trailing end enters the nip the microcapsules break open to release an instant-acting friction-enhancing material which ensures advance of the two webs together through the nip.
- the stand-by roll can be identical to the main roll so that it can, in turn, become the next main roll and in like manner will adhere to a new stand-by roll placed in juxtaposition therewith by an attendant when the core of the now-expended main roll is removed.
- the nip can be provided between a freely-rotatable roller and a spring-urged roller, rod or arcuate bar, the pressure generated by the spring urging being insufficient to advance the leading end of the web from the stand-by roll through the nip until the frictionally enhanced region of the main roll web appears in the nip.
- the method of the invention finds particular utility in paper roller towel dispensers where a freely hanging loop of web material downstream of the nip is disposed outside a cabinet housing the two rolls, the loop being available for use as a towel and used web material from the loop being automatically wound-up on a "waste" roll within the cabinet.
- used web material is to be wound-up on a "waste” roll it is important that the trailing end of web from the main roll is adhered to the leading end of web from the stand-by roll strongly enough to allow the overlapped ends to remain adhered together as they are used as a towel so that, without rethreading by an attendant, the conjoined webs follow one another onto the waste roll.
- the drive for the waste roll can be from a roller of the nip and preferably acts via the periphery of the growing waste roll to ensure a sensibly constant size for the available loop of material exposed outside the cabinet.
- the invention comprises web dispensing apparatus having first and second rolls of web material, means to rotatably support the two rolls of web material so that web material can be drawn off each roll and nip means in which web material from the first roll and the leading end of web material from the second roll are pressed together, the pressure exerted by said nip means on the overlaid web materials being insufficient to advance web material from the second roll with web material from the first roll until a region of enhanced coefficient of friction on the web material from the first roll is drawn through the nip.
- the trailing end 1 of a web 2 from a main roll passes through a nip 4 together with the leading end 5 of a web 6 from a stand-by roll 7.
- the web 2 forms a user loop 8 which is exposed below a cabinet (not shown but housing the apparatus illustrated), the upper end of the loop 8 ending in a waste material roll 9.
- the nip 4 is shown as being defined between a pair of rollers 10, 11 urged together by a pair of helical springs 12.
- the roller 10 can, for example, be replaced by a stationary rod of circular cross-section or by a bar of arcuate shape presenting a concave region to the roller 11. It will be appreciated that by shaping the two components defining the nip 4, to increase the area of contact between the webs 2 and 6 the frictional drag exerted on the web 6 by drawing the web 2 through the nip can be controlled.
- a suitable drive for the waste roll 9 which achieves this, can conveniently be obtained by using drive from a roller in the nip onto the periphery of the waste roll 9. For this reason it is generally convenient to use at least one roller in the nip 4, to increase the frictional drag between the web 2 and that one roller to a point where slip is unlikely to occur as web is drawn through the nip and to drive the waste roll 9 from the said one roller.
- the invention concerns a method of ensuring that as the trailing end 1 of the web 2 passes through the nip 4 it will draw the web 6 through the nip with it.
- the trailing end 1 is adhered to the web 6 close to the leading end 5 thereof so that the web 6 will enter the loop 8 and will eventually be wound up on the waste roll 9.
- a strip of material having an exposed adhesive layer 13 is secured to the face of the web 2 which contacts the web 6. This can conveniently be a strip of double-sided self-adhesive tape.
- the underside of the web 2, in the vicinity of the layer 13 is provided with a strip of "release" material (as hereinbefore described).
- the area of the release strip is shown by chain lines 14 in the drawing.
- the rolled up end of the web 6 on the stand-by roll will be similarly provided with an adhesive layer 13 and a release strip 14 so that when the stand-by roll becomes a new main roll, its web can become adhered to the leading end of the web from a new roll replacing the now-exhausted main roll 3.
- the layer 13 is shown extending across the full width of the web 2 it is possible, for example, to use two narrow longitudinally extending strips of adhesive material parallel to the edges of the web 2. It is desirable to keep adhesive material away from at least the longitudinally outermost 2 cms. wide strips 13a, 13b of the web 2.
- the release strip 14 can be dispensed with.
- the layer 15 lies in the entrance to the nip 4 and although contacted by the web 2 as it is advanced through the nip the web 6 does not get drawn further into the nip 4 until contact between the layers 13 and 15 occurs.
- non-woven webs e.g. of moisture-absorbent paper
- the invention could be used with more durable webs e.g. a woven fabric) that are reused after laundering.
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Replacement Of Web Rolls (AREA)
- Medicines Containing Plant Substances (AREA)
- Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
- Medicines Containing Material From Animals Or Micro-Organisms (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Treatment Of Fiber Materials (AREA)
- Train Traffic Observation, Control, And Security (AREA)
- Traffic Control Systems (AREA)
- Unwinding Webs (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88306740T ATE63449T1 (de) | 1987-07-24 | 1988-07-22 | Verfahren und geraet zum spenden einer bahn von einer rolle. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8717546 | 1987-07-24 | ||
GB878717546A GB8717546D0 (en) | 1987-07-24 | 1987-07-24 | Dispensing web material from roll |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0301767A1 EP0301767A1 (en) | 1989-02-01 |
EP0301767B1 true EP0301767B1 (en) | 1991-05-15 |
Family
ID=10621230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88306740A Expired - Lifetime EP0301767B1 (en) | 1987-07-24 | 1988-07-22 | Improved method and apparatus for dispensing web material from a roll |
Country Status (11)
Country | Link |
---|---|
EP (1) | EP0301767B1 (ko) |
JP (1) | JPH01113010A (ko) |
KR (1) | KR890001853A (ko) |
AT (1) | ATE63449T1 (ko) |
AU (1) | AU598391B2 (ko) |
DE (1) | DE3862824D1 (ko) |
ES (1) | ES2021836B3 (ko) |
FI (1) | FI883480A (ko) |
GB (1) | GB8717546D0 (ko) |
PT (1) | PT88072B (ko) |
ZA (1) | ZA885362B (ko) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB774970A (en) * | 1955-10-07 | 1957-05-15 | Chicago Towel Company | Multiple towel dispensing device |
GB1417972A (en) * | 1971-12-06 | 1975-12-17 | Hurst P | Apparatus for splicing a moving web |
CH615818A5 (ko) * | 1977-04-19 | 1980-02-29 | Apura Gmbh | |
US4552315A (en) * | 1983-01-13 | 1985-11-12 | Maurice Granger | Rolled web dispenser |
GB8418832D0 (en) * | 1984-07-24 | 1984-08-30 | Dudley Ind Ltd | Washroom devices |
-
1987
- 1987-07-24 GB GB878717546A patent/GB8717546D0/en active Pending
-
1988
- 1988-07-22 ES ES88306740T patent/ES2021836B3/es not_active Expired - Lifetime
- 1988-07-22 EP EP88306740A patent/EP0301767B1/en not_active Expired - Lifetime
- 1988-07-22 AU AU19727/88A patent/AU598391B2/en not_active Ceased
- 1988-07-22 DE DE8888306740T patent/DE3862824D1/de not_active Expired - Fee Related
- 1988-07-22 JP JP63183403A patent/JPH01113010A/ja active Pending
- 1988-07-22 FI FI883480A patent/FI883480A/fi not_active Application Discontinuation
- 1988-07-22 AT AT88306740T patent/ATE63449T1/de not_active IP Right Cessation
- 1988-07-22 ZA ZA885362A patent/ZA885362B/xx unknown
- 1988-07-22 PT PT88072A patent/PT88072B/pt not_active IP Right Cessation
- 1988-07-22 KR KR1019880009198A patent/KR890001853A/ko not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
ES2021836B3 (es) | 1991-11-16 |
PT88072B (pt) | 1993-09-30 |
FI883480A0 (fi) | 1988-07-22 |
ATE63449T1 (de) | 1991-06-15 |
AU598391B2 (en) | 1990-06-21 |
PT88072A (pt) | 1989-06-30 |
FI883480A (fi) | 1989-01-25 |
DE3862824D1 (de) | 1991-06-20 |
ZA885362B (en) | 1990-03-28 |
EP0301767A1 (en) | 1989-02-01 |
KR890001853A (ko) | 1989-04-06 |
JPH01113010A (ja) | 1989-05-01 |
AU1972788A (en) | 1989-01-27 |
GB8717546D0 (en) | 1987-09-03 |
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