CA2053536A1 - Embossing dispenser - Google Patents
Embossing dispenserInfo
- Publication number
- CA2053536A1 CA2053536A1 CA 2053536 CA2053536A CA2053536A1 CA 2053536 A1 CA2053536 A1 CA 2053536A1 CA 2053536 CA2053536 CA 2053536 CA 2053536 A CA2053536 A CA 2053536A CA 2053536 A1 CA2053536 A1 CA 2053536A1
- Authority
- CA
- Canada
- Prior art keywords
- embossing
- embossing roll
- roll
- knuckles
- paper
- 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.)
- Abandoned
Links
- 238000004049 embossing Methods 0.000 title claims abstract description 102
- 230000002452 interceptive effect Effects 0.000 claims abstract description 4
- 230000008901 benefit Effects 0.000 description 6
- 238000004804 winding Methods 0.000 description 4
- 230000035515 penetration Effects 0.000 description 3
- 238000002788 crimping Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002844 continuous effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Abstract
ABSTRACT OF THE INVENTION
Disclosed is a rolled paper embossing dispenser wherein a roll of flat paper may be loaded into the dispenser and rotatably supported therein. The paper toweling is dispenser through a nip formed between first and second embossing rolls rotatably mounted within the dispenser. The first embossing roll includes a plurality of knuckles extending radially therefrom and arranged in a plurality of spaced, circumferential rows. The second embossing roll includes a plurality of annular extensions and annular slots arranged in alternating relationship. The spaced, circumferential rows of knuckles of the first embossing roll align with the annular slots of the second embossing roll. Means are provided to manually rotate the first embossing roll. The second embossing roll may be allowed to rotate freely from said first embossing roll.
As the first embossing roll is rotated, paper toweling is drawn through the nip and is embossed therein. Because the knuckles of the first embossing roll reside in the slot of the second embossing roll at the nip in a non-interfering relationship, and further because such slots are continuous about the circumference of the second embossing roll, the second embossing roll need not be driven in registration with the first embossing roll. Slippage of the second embossing roll with regard to the first embossing roll as paper toweling is drawn through the web will not result in breaking or tearing of the web.
Disclosed is a rolled paper embossing dispenser wherein a roll of flat paper may be loaded into the dispenser and rotatably supported therein. The paper toweling is dispenser through a nip formed between first and second embossing rolls rotatably mounted within the dispenser. The first embossing roll includes a plurality of knuckles extending radially therefrom and arranged in a plurality of spaced, circumferential rows. The second embossing roll includes a plurality of annular extensions and annular slots arranged in alternating relationship. The spaced, circumferential rows of knuckles of the first embossing roll align with the annular slots of the second embossing roll. Means are provided to manually rotate the first embossing roll. The second embossing roll may be allowed to rotate freely from said first embossing roll.
As the first embossing roll is rotated, paper toweling is drawn through the nip and is embossed therein. Because the knuckles of the first embossing roll reside in the slot of the second embossing roll at the nip in a non-interfering relationship, and further because such slots are continuous about the circumference of the second embossing roll, the second embossing roll need not be driven in registration with the first embossing roll. Slippage of the second embossing roll with regard to the first embossing roll as paper toweling is drawn through the web will not result in breaking or tearing of the web.
Description
2C~S3~;
EMBOSSING DISPENSER
BACXGROUND OF THE INVENTION
l. Field of the Invention.
This inventlon relates generally to a cabinet for dispenslng rolled sanitary paper products, and more particularly, to a dispensing cabinet in which a roll of sanitary paper is embossed as it i8 dispensed.
EMBOSSING DISPENSER
BACXGROUND OF THE INVENTION
l. Field of the Invention.
This inventlon relates generally to a cabinet for dispenslng rolled sanitary paper products, and more particularly, to a dispensing cabinet in which a roll of sanitary paper is embossed as it i8 dispensed.
2. Brlef Description of the Prior Art.
Rolled sanitary paper products such as paper toweling and tollet tissue are commonly dispensed from cabinets ln publlc wa~hrooms. When economy is primary consideration, a relatively smooth, flat paper is wound very tightly into a roll to maximize the length of paper for a given diameter of the roll. By maxlmizing the length of paper on the roll, the roll generally lasts longer which increases the time between roll replacement in the cabinet. The cabinet may also contaln a second roll of paper that automatically beglns feeding as the first roll becomes fully deplete which further increases the tlme period from one reflll operation to the next. When economy 18 a primary con~ideration, it is also common to use lower graded, such as unbleached or llght brightness papers in the dispensing cablnet~. Such economy rolled paper product can generally be characterized as dense, stlff and havlng llmlted absorbency when compared to hlgher quality sanltary paper products.
When economy ls not ~ primary consideration and lt is deslred to provide a higher quallty rolled sanltary paper product in the dispensing cabinet, the usual approach has been to soften the paper by pre-treatlng it. Usually thl~ pre-treatment ls accompllshed by embossing the paper sheets prlor to winding lt on the roll. As used in thi~ speciflcation, the term embos~lng mean~ ralsing the surface of the paper sheet lnto bosse3 or protuberance~ ln such a manner that the length of the embossed sheet is substantlally the same as the length of the sheet prlor to embo~lng. One short - 2~3S
~ ~lng of embossing papQr prlor to wlndlng it on a roll 1~ that the wlnding operatlon ls counterproductlve to embo~slng. In other wordQ, the act of winding the paper on the rolls negates much of the benefit gained by embossing. The winding operation tends to compress the bosses formed in the paper with the result that the dispensed paper has less bulk and softness and potentially les~
absorbency then it had prior to the winding operation~ If, on the other hand, the embossed paper is wound loosely on the roll in order to retain the bulk and softness gained from the embossing process, the length of the paper wound on the roll wlll be substantially reduced and the dispensing cabinet would therefore require much more frequent servicing.
A further shortcomlng of dispenQing an embossed paper, particularly the dispensing of embossed paper towelinq, is the fact that in moqt rolled towel cabinets, the paper toweling is normally dlspensed compressively by fastening the toweling through a nip formed by two feed rolls. U.S. Patent No. 1,224,224 to Shelley is representative of such a dispensing cabinet. This application of compressive force to the embossed paper also tends to diminish the benefits gained from embos~ing.
One approach for improving the quality of rolled sanitary products dispensed from a cabinet i5 disclosed in V.S. Patent No.
Rolled sanitary paper products such as paper toweling and tollet tissue are commonly dispensed from cabinets ln publlc wa~hrooms. When economy is primary consideration, a relatively smooth, flat paper is wound very tightly into a roll to maximize the length of paper for a given diameter of the roll. By maxlmizing the length of paper on the roll, the roll generally lasts longer which increases the time between roll replacement in the cabinet. The cabinet may also contaln a second roll of paper that automatically beglns feeding as the first roll becomes fully deplete which further increases the tlme period from one reflll operation to the next. When economy 18 a primary con~ideration, it is also common to use lower graded, such as unbleached or llght brightness papers in the dispensing cablnet~. Such economy rolled paper product can generally be characterized as dense, stlff and havlng llmlted absorbency when compared to hlgher quality sanltary paper products.
When economy ls not ~ primary consideration and lt is deslred to provide a higher quallty rolled sanltary paper product in the dispensing cabinet, the usual approach has been to soften the paper by pre-treatlng it. Usually thl~ pre-treatment ls accompllshed by embossing the paper sheets prlor to winding lt on the roll. As used in thi~ speciflcation, the term embos~lng mean~ ralsing the surface of the paper sheet lnto bosse3 or protuberance~ ln such a manner that the length of the embossed sheet is substantlally the same as the length of the sheet prlor to embo~lng. One short - 2~3S
~ ~lng of embossing papQr prlor to wlndlng it on a roll 1~ that the wlnding operatlon ls counterproductlve to embo~slng. In other wordQ, the act of winding the paper on the rolls negates much of the benefit gained by embossing. The winding operation tends to compress the bosses formed in the paper with the result that the dispensed paper has less bulk and softness and potentially les~
absorbency then it had prior to the winding operation~ If, on the other hand, the embossed paper is wound loosely on the roll in order to retain the bulk and softness gained from the embossing process, the length of the paper wound on the roll wlll be substantially reduced and the dispensing cabinet would therefore require much more frequent servicing.
A further shortcomlng of dispenQing an embossed paper, particularly the dispensing of embossed paper towelinq, is the fact that in moqt rolled towel cabinets, the paper toweling is normally dlspensed compressively by fastening the toweling through a nip formed by two feed rolls. U.S. Patent No. 1,224,224 to Shelley is representative of such a dispensing cabinet. This application of compressive force to the embossed paper also tends to diminish the benefits gained from embos~ing.
One approach for improving the quality of rolled sanitary products dispensed from a cabinet i5 disclosed in V.S. Patent No.
3,93S,802 to Perrin, et al. Such patent teaches the crimping of the paper toweling web within the dispensing cabinet. Crimping is achieved by passing the web between a drive roll and a driven roll where each roll includes a series of axially aligned teeth extending therefrom $n alternat$ng circumferential relationship with a series of axially aligned valleys thereon. The plain or smooth paper towelinq is drawn through the rolls and compressively abutted between the drive roll teeth and the driven roll teeth over the various crest~ of these teeth such that the plain paper toweling is foldably deformed into a crimped or serrated paper toweling web. One dl~advantage of Perrin, et al. is that the effective length of the dispense sheet is substantially decreased.
Another disadvantage of Perrin is based on the well established 2~5~S
f -t that the softness and strength propertles of sanitary paper aLe ~nversely related and, therefore, any bulklng proce~J that maintains the tensile strength of the dispensed ~heet results ln only slight improvement in sheet softness.
International publication no. WO85/03029(PCT Application No.
PCT/US85/00029) teaches a rolled paper embossing dispenser. There are two embossing rolls provided ln such dispenser each having a plurality of knuckles projecting radially therefrom. In an alternative embodiment, there is taught an embossing roll 22 having a plurality of knuckles pro~ecting radially therefrom used in con~unction with a roll that has a smooth, resilient surface. In both embodiments of such reference, the rolls must be operated in registration with one another. Timing gears are required.
SummarY of the Invention.
It is therefore an ob~ect of the present inventlon to provide a rolled paper dispen-Qer in which the rolled paper web is embossed as it i~ dispensed.
It is a further ob~ect of the present invention to provide a rolled paper dispenser wherein the rolls of the dispenser need not be run in registratlon with one another.
Still another ob~ect of the pre~ent invention i9 to provide a dlspenser wherein embossing i8 accompll~hed by feedlng the rolled paper web through two roll~, one of which has a plurality of knuckles pro~ecting radially therefrom and a second roll having a plurality of annular grooves thereln.
Yet another ob~ect of the present invention is to provide a rolled paper embos~lng di~penser requiring no timing gear~.
A further ob~ect of the present invention ls to provide a rolled paper di~penQer wherein the ~heet i~ unlformly embo~sed such that there are no cycllcly fluctuation~.
Briefly, ~tated, that foregoing and numerou~ other ob~ects, features and advantage~ of the present invention will become readily apparent upon reading of the detailed de~cription, clalm~
and drawings ~et forth herein. These ob~ect~, features and advantages are accomplished by mounting ln a dispen~inq cabinet a . -3-- 2~535 - ir of embossinq rolls to form a nip there between. The flrst embosslng roll includes a plurallty of ~nuckles extendlng radlally therefrom and arranged in a plurallty of spaced, clrcumferentlal - rows or bands. The second embossing roll includes a series of annular rldges and annular grooves arranged in alternatlng relationship. Each circumferential band of knuckles on the first embossing roll aligns with a single annular groove on the second embossing roll such that, in the nip area between the rolls, the knuckleq of the first embossing roll extend into the annular grooves of the second embossing roll.
Mean~ are ~upplied to rotationally drive the roll having the plurality of knuckles extending radially therefrom. A paper web thus driven through the nip formed by the two rolls is embossed with the action of the paper web movlng through the nip serving to rotationally drive the second embosslng roll. As such, embossing of the paper web i~ accomplished without havlng to run the emboæsing roll in registration with one another.
~ RIEF DESCRIPTION OF THE DRAWIN _ Figure 1 a cross sectional slde view of the embossing dispQnser of the present invention.
Fiqure 2 i9 a plan view of the embosQing rolls of the present invention.
Figure 3 is an enlarged plan view of the ~urfaces of the embossing roll~ pro~ected onto a single plane depictlng a knuckle/groove relationship preferable for perf-embosslng.
Figure 4 is a cross-sectional of paper toweling perf-embossed by th0 apparatus of the present invention.
Figure 5 is an enlarged plan view of the surfaces of embossing rolls pro~ected onto a single plane depicting a knuckle/groove relationship preferable for embossing without perforating.
Figure 6 is a cross-sectional view taken along line 6-6 of Figure 5 with towel residlng between the embossing rolls.
DETAILED DESCRIPTION OF THE PREFERRED EM~ODIMENT
Turning first to Figure l, there is shown a dispensing cabinet lO. Mounted within the dispenslng cabinet lO is a arcuate plate . . -4-2C _ ~.535 ber of cradle 12 for supporting a rolled paper web 14. Pin or bar members extending from the sldes of cablnet 10 for lnsertlon into the center of roll 14 may be substltuted for cradle 12. Also mounted withln the cablnet 10 are a palr of ldler rolls 16, 18.
Mounted in the lower portion of cablnet 10 is a flr~t or male embossing roll 20 and a second or female embossing roll 22. Both flrst and second embosslng rolls 20, 22 are capable of rotatlonal movement within cabinet 10. A crank 24 is provided to impart rotational movement to flrst embossing roll 20. There ls a nip 26 formed between flrst embossinq roll 20 and the second embossing roll 22.
An openlng 28 ls provided at the lower end of cabinet 10 through which embossed paper toweling 30 may exit cabinet 10. A
baffle 32 is provided to guide toweling 30 to opening 28. A plate 34 is provlded on the upper side of opening 28 to prevent user~ who may insert their flngers lnto openlng 28 from being able to reach first embossing roll 20, second embossing roll 22 and nip 26 with ~uch f$ngers.
In operation, flat paper toweling 36 from roll 14 extends about idler rolls 16, 18, through nip 26 and through opening 28.
By imparting rotatlonal movement to first embossing roll 20 by means of crank 24, flat paper toweling 36 is embossed at nip 26.
Looking next at Figures 2, 3, 5 and 6, there is shown in greater detail the male embossing roll 20 and female embossing roll 22 of the present invention. Extending radiaily from male embos~inq roll 2~ are a plurality of knuckles 38. Rnuckles 38 are arranged in a plurality of spaced, circumferential rows or bands 40 as most c~early shown in Figure 3 and 5.
Female embossing roll 22 includes a plurality of annular extensions 42 and annular grooves 44 arranged in alternating relationship along the length of female embossing roll 22. Annular extensions 42 and annular grooves 44 are ~ubstantially perpendicular to the cy,~indrical axis 46 of female embossing roll 22.~ Similarly, a plane extending through the center of each knuckle 33 of the single circumferential row 40 is suSstantially _5_ 2~S35 p 7endlcular to the cylindrlcal axis 48 of male embo~lng roll 20.
The width of each of the grooves 44 is greater than the wldth of each knuckle 38 such that as knuckles 38 rotate through nlp 26, knuckles 38 project into annular grooves 42 in a spacially non-interfering relationship with any portion of female embossing roll 22. As used hereln, spacially non-lnterfering relationship means that knuckles 38 pro~ect into annular grooves 48 at nip 26 without any portion of knuckles 38 attempting to occupy the same space as annular extensions 42. The tops of knuckles 38 do not contact the top surface~ of annular extensions 42. For perf-embossing the sides of knuckles 38 may be allowed to contact the sides of grooves 44 although this is not absolutely necessary to accomplish perf-embossing. Further, for embossing without perforating there should be no physical contact of knuckles 38 with any portion of female embossing rolls 22.
Note that knuckles 38 are offset to one side of groove~ 44 in Figure 3. The arrangement is used particularly for perf-embossing where it i~ desired to actually make small tear~ or cut~ ln the towel. To accomplish this, ~ide~ of knuckles 38 re~ide in close proximlty or may even contact the side~ of annular grooves 44.
Figure 5 depicts an alternative knuckle/groove relationship to that shown in Figure 3. Note that knuckles 38 reside substantially in the middle of grooves 44. This i8 typically referred to a~ a center float arrangement. This arrangement i~
preferable when embos~ing without perforating is desired. Figure 6 shows a cros~-section taken along line 6-6 of Figure 5 with towel 30 re~idlng between fir~t and second embo~sing rolls 20, 22. There it is shown clearly that the positlon of knuckles 38 avoids contact between the side of knuckles 38 and the sides of grooves 44.
A~ ~tated above, preferably only first or male embossing roll 20 i~ driven by turning a crank 24. The movement of the flat paper toweling 36 through nip 26 will impart rotation~l movement to second embo~sing roll 22. However, it is not neces~ary that the rotational movement of ~econd embos~ing roll 22 be in regi~tration . -6-2~535 wlth the rotation of fir~t embo~sing roll 20. ThlJ 19 becau~e ~ Ickles 38 interact only with continuou~ annular extenslons 42 and contlnuous annular grooves or slots 40 ln a ~paclally non-interfering relationshlp. As such, lf second embossing roll 22 does not keep up rotationally with first embossing roll 20, paper toweling 36 will slide past second embossing roll 22 at nlp 26 wlthout breaking or tearing the paper toweling 36. In such manner, the present invention allows for the embossing of paper toweling ln the dlspenser without circumferentlal timlng of the embosslng roll~.
The resultlng embossed sheet is two sided. A sectlonal view of such a perf-embossed sheet is shown in Flgure 4. The embossed peg~ 50 lle unidlrectionally above lamina A-A such that the surface of the sheet on the slde of grooved roll wlll look slmilar to a typlcally perf-embossed sheet. The ~urface of the towellng on the side of the fir~t embo~sing roll 20 will be flat with depresQions corresponding to peg~ 50. Small cut~ or tear~ in the perf-embossed sheet are identified by dashed lines 52.
Preferably, flrst and second embos~lng rolls 20, 22 are manufactured from steel, alumlnum or a hard pla~tlc materlal. The pitch, knuckle width, groove wldth, depth of groove, depth of penetration of knuckle into groove and embo~ing roll diameter may vary substantially depending on the type and amount of embossing desired and the thickness of the web being embossed as well as the amount of force available to drive the embo~sing roll~. For embos~ing paper towellng within cabinet 10 as depicted in Figure l by manually rotating crank 24, the pltch of knuckle~ 38 i~
preferably in the range of 0.081 to 0.101 inche~. The width of knuckle~ 38 i~ preferably in the range of 0.034 to 0.044 lnche~.
The wldth of groove~ 44 is preferably in the range of 0.044 to 0.057 inches. The depth of grooves 44 i~ preferably in the range of 0.044 to 0.057 inche~. The depth of penetration of knuckles 38 lnto grooves 44 18 preferably in the range of 0.020 to 0.032 lnches. Embo~sing roil~ 20, 22 have been used with dlameters ln the range of 0.625 to l.0 inche~. The diameter~ of embosslng rolls . -7-2(!':"5"5 2~ 22 wlll, of course, govern the number of rotatlon~ nece~sary t~ dl~pen~e a usable length of towel 30.
It should be recognized that embos~lng rolls 20, 22 may be motor drlven as opposed to manually driven by crank 24. The avallability of greater rotational force to drlve embos~ing rolls 20, 22 would allow for modiflcations pitch, groove width, knuckle width, groove depth, depth of penetration and embossing rolls diameter well outside the preferred dimensional ranges stated above. With that in mind, it ~hould also be recognized that embo~sing rolls 20, 22 of the present invention could be employed in a finishing machine in a mlll.
A~ ~tated above, embosslng rolls 20, 22 are preferably operated without timing gears. Preferably, crank 24 drives only male embossing roll 20. However, lt should be understood that crank 24 may be used to drive female embo~sing roll 22 or, alternatively, embossing roll~ 20, 22 may be geared together such that operation of crank 24 drives both embossing rolls 20, 22.
From the foregoing, it will be ~een that this lnvention i~ one well adapted to attain all of the ends and ob~ects hereinabove set forth together with other advantages which are apparent and which are inherent to the apparatus It will be understood that certain features and sub-combinations are of utility and may be employed wlth reference to other features and sub-comblnation~. Thl~ ls contemplated by and 18 within the scope of the claims.
As many posslble embodlments may be made of the lnvention wlthout departlng from the scope thereof, it ls to be under~tood that all matter herein ~et forth or as shown in the accompanying drawings is to be interpreted as illustrative and not ln a limiting ~ense .
Another disadvantage of Perrin is based on the well established 2~5~S
f -t that the softness and strength propertles of sanitary paper aLe ~nversely related and, therefore, any bulklng proce~J that maintains the tensile strength of the dispensed ~heet results ln only slight improvement in sheet softness.
International publication no. WO85/03029(PCT Application No.
PCT/US85/00029) teaches a rolled paper embossing dispenser. There are two embossing rolls provided ln such dispenser each having a plurality of knuckles projecting radially therefrom. In an alternative embodiment, there is taught an embossing roll 22 having a plurality of knuckles pro~ecting radially therefrom used in con~unction with a roll that has a smooth, resilient surface. In both embodiments of such reference, the rolls must be operated in registration with one another. Timing gears are required.
SummarY of the Invention.
It is therefore an ob~ect of the present inventlon to provide a rolled paper dispen-Qer in which the rolled paper web is embossed as it i~ dispensed.
It is a further ob~ect of the present invention to provide a rolled paper dispenser wherein the rolls of the dispenser need not be run in registratlon with one another.
Still another ob~ect of the pre~ent invention i9 to provide a dlspenser wherein embossing i8 accompll~hed by feedlng the rolled paper web through two roll~, one of which has a plurality of knuckles pro~ecting radially therefrom and a second roll having a plurality of annular grooves thereln.
Yet another ob~ect of the present invention is to provide a rolled paper embos~lng di~penser requiring no timing gear~.
A further ob~ect of the present invention ls to provide a rolled paper di~penQer wherein the ~heet i~ unlformly embo~sed such that there are no cycllcly fluctuation~.
Briefly, ~tated, that foregoing and numerou~ other ob~ects, features and advantage~ of the present invention will become readily apparent upon reading of the detailed de~cription, clalm~
and drawings ~et forth herein. These ob~ect~, features and advantages are accomplished by mounting ln a dispen~inq cabinet a . -3-- 2~535 - ir of embossinq rolls to form a nip there between. The flrst embosslng roll includes a plurallty of ~nuckles extendlng radlally therefrom and arranged in a plurallty of spaced, clrcumferentlal - rows or bands. The second embossing roll includes a series of annular rldges and annular grooves arranged in alternatlng relationship. Each circumferential band of knuckles on the first embossing roll aligns with a single annular groove on the second embossing roll such that, in the nip area between the rolls, the knuckleq of the first embossing roll extend into the annular grooves of the second embossing roll.
Mean~ are ~upplied to rotationally drive the roll having the plurality of knuckles extending radially therefrom. A paper web thus driven through the nip formed by the two rolls is embossed with the action of the paper web movlng through the nip serving to rotationally drive the second embosslng roll. As such, embossing of the paper web i~ accomplished without havlng to run the emboæsing roll in registration with one another.
~ RIEF DESCRIPTION OF THE DRAWIN _ Figure 1 a cross sectional slde view of the embossing dispQnser of the present invention.
Fiqure 2 i9 a plan view of the embosQing rolls of the present invention.
Figure 3 is an enlarged plan view of the ~urfaces of the embossing roll~ pro~ected onto a single plane depictlng a knuckle/groove relationship preferable for perf-embosslng.
Figure 4 is a cross-sectional of paper toweling perf-embossed by th0 apparatus of the present invention.
Figure 5 is an enlarged plan view of the surfaces of embossing rolls pro~ected onto a single plane depicting a knuckle/groove relationship preferable for embossing without perforating.
Figure 6 is a cross-sectional view taken along line 6-6 of Figure 5 with towel residlng between the embossing rolls.
DETAILED DESCRIPTION OF THE PREFERRED EM~ODIMENT
Turning first to Figure l, there is shown a dispensing cabinet lO. Mounted within the dispenslng cabinet lO is a arcuate plate . . -4-2C _ ~.535 ber of cradle 12 for supporting a rolled paper web 14. Pin or bar members extending from the sldes of cablnet 10 for lnsertlon into the center of roll 14 may be substltuted for cradle 12. Also mounted withln the cablnet 10 are a palr of ldler rolls 16, 18.
Mounted in the lower portion of cablnet 10 is a flr~t or male embossing roll 20 and a second or female embossing roll 22. Both flrst and second embosslng rolls 20, 22 are capable of rotatlonal movement within cabinet 10. A crank 24 is provided to impart rotational movement to flrst embossing roll 20. There ls a nip 26 formed between flrst embossinq roll 20 and the second embossing roll 22.
An openlng 28 ls provided at the lower end of cabinet 10 through which embossed paper toweling 30 may exit cabinet 10. A
baffle 32 is provided to guide toweling 30 to opening 28. A plate 34 is provlded on the upper side of opening 28 to prevent user~ who may insert their flngers lnto openlng 28 from being able to reach first embossing roll 20, second embossing roll 22 and nip 26 with ~uch f$ngers.
In operation, flat paper toweling 36 from roll 14 extends about idler rolls 16, 18, through nip 26 and through opening 28.
By imparting rotatlonal movement to first embossing roll 20 by means of crank 24, flat paper toweling 36 is embossed at nip 26.
Looking next at Figures 2, 3, 5 and 6, there is shown in greater detail the male embossing roll 20 and female embossing roll 22 of the present invention. Extending radiaily from male embos~inq roll 2~ are a plurality of knuckles 38. Rnuckles 38 are arranged in a plurality of spaced, circumferential rows or bands 40 as most c~early shown in Figure 3 and 5.
Female embossing roll 22 includes a plurality of annular extensions 42 and annular grooves 44 arranged in alternating relationship along the length of female embossing roll 22. Annular extensions 42 and annular grooves 44 are ~ubstantially perpendicular to the cy,~indrical axis 46 of female embossing roll 22.~ Similarly, a plane extending through the center of each knuckle 33 of the single circumferential row 40 is suSstantially _5_ 2~S35 p 7endlcular to the cylindrlcal axis 48 of male embo~lng roll 20.
The width of each of the grooves 44 is greater than the wldth of each knuckle 38 such that as knuckles 38 rotate through nlp 26, knuckles 38 project into annular grooves 42 in a spacially non-interfering relationship with any portion of female embossing roll 22. As used hereln, spacially non-lnterfering relationship means that knuckles 38 pro~ect into annular grooves 48 at nip 26 without any portion of knuckles 38 attempting to occupy the same space as annular extensions 42. The tops of knuckles 38 do not contact the top surface~ of annular extensions 42. For perf-embossing the sides of knuckles 38 may be allowed to contact the sides of grooves 44 although this is not absolutely necessary to accomplish perf-embossing. Further, for embossing without perforating there should be no physical contact of knuckles 38 with any portion of female embossing rolls 22.
Note that knuckles 38 are offset to one side of groove~ 44 in Figure 3. The arrangement is used particularly for perf-embossing where it i~ desired to actually make small tear~ or cut~ ln the towel. To accomplish this, ~ide~ of knuckles 38 re~ide in close proximlty or may even contact the side~ of annular grooves 44.
Figure 5 depicts an alternative knuckle/groove relationship to that shown in Figure 3. Note that knuckles 38 reside substantially in the middle of grooves 44. This i8 typically referred to a~ a center float arrangement. This arrangement i~
preferable when embos~ing without perforating is desired. Figure 6 shows a cros~-section taken along line 6-6 of Figure 5 with towel 30 re~idlng between fir~t and second embo~sing rolls 20, 22. There it is shown clearly that the positlon of knuckles 38 avoids contact between the side of knuckles 38 and the sides of grooves 44.
A~ ~tated above, preferably only first or male embossing roll 20 i~ driven by turning a crank 24. The movement of the flat paper toweling 36 through nip 26 will impart rotation~l movement to second embo~sing roll 22. However, it is not neces~ary that the rotational movement of ~econd embos~ing roll 22 be in regi~tration . -6-2~535 wlth the rotation of fir~t embo~sing roll 20. ThlJ 19 becau~e ~ Ickles 38 interact only with continuou~ annular extenslons 42 and contlnuous annular grooves or slots 40 ln a ~paclally non-interfering relationshlp. As such, lf second embossing roll 22 does not keep up rotationally with first embossing roll 20, paper toweling 36 will slide past second embossing roll 22 at nlp 26 wlthout breaking or tearing the paper toweling 36. In such manner, the present invention allows for the embossing of paper toweling ln the dlspenser without circumferentlal timlng of the embosslng roll~.
The resultlng embossed sheet is two sided. A sectlonal view of such a perf-embossed sheet is shown in Flgure 4. The embossed peg~ 50 lle unidlrectionally above lamina A-A such that the surface of the sheet on the slde of grooved roll wlll look slmilar to a typlcally perf-embossed sheet. The ~urface of the towellng on the side of the fir~t embo~sing roll 20 will be flat with depresQions corresponding to peg~ 50. Small cut~ or tear~ in the perf-embossed sheet are identified by dashed lines 52.
Preferably, flrst and second embos~lng rolls 20, 22 are manufactured from steel, alumlnum or a hard pla~tlc materlal. The pitch, knuckle width, groove wldth, depth of groove, depth of penetration of knuckle into groove and embo~ing roll diameter may vary substantially depending on the type and amount of embossing desired and the thickness of the web being embossed as well as the amount of force available to drive the embo~sing roll~. For embos~ing paper towellng within cabinet 10 as depicted in Figure l by manually rotating crank 24, the pltch of knuckle~ 38 i~
preferably in the range of 0.081 to 0.101 inche~. The width of knuckle~ 38 i~ preferably in the range of 0.034 to 0.044 lnche~.
The wldth of groove~ 44 is preferably in the range of 0.044 to 0.057 inches. The depth of grooves 44 i~ preferably in the range of 0.044 to 0.057 inche~. The depth of penetration of knuckles 38 lnto grooves 44 18 preferably in the range of 0.020 to 0.032 lnches. Embo~sing roil~ 20, 22 have been used with dlameters ln the range of 0.625 to l.0 inche~. The diameter~ of embosslng rolls . -7-2(!':"5"5 2~ 22 wlll, of course, govern the number of rotatlon~ nece~sary t~ dl~pen~e a usable length of towel 30.
It should be recognized that embos~lng rolls 20, 22 may be motor drlven as opposed to manually driven by crank 24. The avallability of greater rotational force to drlve embos~ing rolls 20, 22 would allow for modiflcations pitch, groove width, knuckle width, groove depth, depth of penetration and embossing rolls diameter well outside the preferred dimensional ranges stated above. With that in mind, it ~hould also be recognized that embo~sing rolls 20, 22 of the present invention could be employed in a finishing machine in a mlll.
A~ ~tated above, embosslng rolls 20, 22 are preferably operated without timing gears. Preferably, crank 24 drives only male embossing roll 20. However, lt should be understood that crank 24 may be used to drive female embo~sing roll 22 or, alternatively, embossing roll~ 20, 22 may be geared together such that operation of crank 24 drives both embossing rolls 20, 22.
From the foregoing, it will be ~een that this lnvention i~ one well adapted to attain all of the ends and ob~ects hereinabove set forth together with other advantages which are apparent and which are inherent to the apparatus It will be understood that certain features and sub-combinations are of utility and may be employed wlth reference to other features and sub-comblnation~. Thl~ ls contemplated by and 18 within the scope of the claims.
As many posslble embodlments may be made of the lnvention wlthout departlng from the scope thereof, it ls to be under~tood that all matter herein ~et forth or as shown in the accompanying drawings is to be interpreted as illustrative and not ln a limiting ~ense .
Claims (9)
1. A rolled paper embossing dispenser comprising:
(a) a cabinet;
(b) means for supporting a roll of paper in said cabinet;
(c) a male embossing roll mounted within said cabinet, said male embossing roll having a plurality of knuckles extending radially therefrom and arranged in a plurality of spaced, circumferential bands; and (d) a female embossing roll mounted within said cabinet to form a nip with said male embossing roll, said female embossing roll having a plurality of spaced, annular grooves, each of said annular grooves being in specially non-interfering alignment with a single circumferential band of said knuckles.
(a) a cabinet;
(b) means for supporting a roll of paper in said cabinet;
(c) a male embossing roll mounted within said cabinet, said male embossing roll having a plurality of knuckles extending radially therefrom and arranged in a plurality of spaced, circumferential bands; and (d) a female embossing roll mounted within said cabinet to form a nip with said male embossing roll, said female embossing roll having a plurality of spaced, annular grooves, each of said annular grooves being in specially non-interfering alignment with a single circumferential band of said knuckles.
2. A rolled paper embossing dispenser as recited in claim 1 further comprising:
means for rotationally driving said male embossing roll, said female embossing roll being allowed to rotate freely.
means for rotationally driving said male embossing roll, said female embossing roll being allowed to rotate freely.
3. A rolled paper embossing dispenser comprising:
(a) a cabinet;
(b) means for supporting a roll of paper within said cabinet;
(c) a nip formed by a first embossing roll and a second embossing roll, said first and second embossing rolls rotatably mounted within said cabinet, said first embossing roll having a plurality of knuckles projecting radially therefrom and arranged in a series of annular bands there around, said second embossing roll having a plurality of annular slots therein, said annular slots having sufficient width to receive said knuckles without contacting any portion of said knuckles.
(a) a cabinet;
(b) means for supporting a roll of paper within said cabinet;
(c) a nip formed by a first embossing roll and a second embossing roll, said first and second embossing rolls rotatably mounted within said cabinet, said first embossing roll having a plurality of knuckles projecting radially therefrom and arranged in a series of annular bands there around, said second embossing roll having a plurality of annular slots therein, said annular slots having sufficient width to receive said knuckles without contacting any portion of said knuckles.
4. A rolled paper embossing dispenser is recited in claim 3 further comprising:
means for rotationally driving said first embossing roll.
means for rotationally driving said first embossing roll.
5. A rolled paper embossing dispenser as recited in claim herein:
said second embossing roll is allowed to rotate freely.
said second embossing roll is allowed to rotate freely.
6. A rolled paper embossing dispenser comprising:
(a) a cabinet;
(b) means for supporting a roll of paper within said cabinet;
(c) a first embossing roll mounted within said cabinet, said first embossing roll including a plurality of knuckles extending radially therefrom;
(d) means for manually rotationally driving said first embossing roll;
(e) a second embossing roll mounted within said cabinet substantially parallel and adjacent to said first embossing roll, said second embossing roll including a plurality of annular grooves therein, said annular grooves having a width sufficient to receive said knuckles such that said knuckles do not spacially interfere with or contact said second embossing roll.
(a) a cabinet;
(b) means for supporting a roll of paper within said cabinet;
(c) a first embossing roll mounted within said cabinet, said first embossing roll including a plurality of knuckles extending radially therefrom;
(d) means for manually rotationally driving said first embossing roll;
(e) a second embossing roll mounted within said cabinet substantially parallel and adjacent to said first embossing roll, said second embossing roll including a plurality of annular grooves therein, said annular grooves having a width sufficient to receive said knuckles such that said knuckles do not spacially interfere with or contact said second embossing roll.
7. A rolled paper embossing dispenser as recited in claim 6 wherein:
said second embossing roll is allowed to rotate freely with respect to said first embossing roll.
said second embossing roll is allowed to rotate freely with respect to said first embossing roll.
8. A rolled paper embossing dispenser as recited in claim 1 further comprising:
means for rotationally driving at least one of said embossing rolls.
means for rotationally driving at least one of said embossing rolls.
9. A pair of embossing rolls comprising:
(a) a male embossing roll having a plurality of knuckles extending radially therefrom and arranged in a plurality of spaced circumferential bands;
(b) a female embossing roll having a plurality of annular grooves therein, said annular grooves having sufficient width to receive said knuckles without contacting any portion of said knuckles;
(c) means for rotationally driving at least one of said embossing rolls.
(a) a male embossing roll having a plurality of knuckles extending radially therefrom and arranged in a plurality of spaced circumferential bands;
(b) a female embossing roll having a plurality of annular grooves therein, said annular grooves having sufficient width to receive said knuckles without contacting any portion of said knuckles;
(c) means for rotationally driving at least one of said embossing rolls.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US62316990A | 1990-12-05 | 1990-12-05 | |
| US623,169 | 1990-12-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2053536A1 true CA2053536A1 (en) | 1992-06-06 |
Family
ID=24497049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2053536 Abandoned CA2053536A1 (en) | 1990-12-05 | 1991-10-16 | Embossing dispenser |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2053536A1 (en) |
| MX (1) | MX9102125A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382001A (en) * | 2018-04-27 | 2018-08-10 | 连云港市振扬纸品有限公司 | Make the continous way production system of paper tube |
-
1991
- 1991-10-16 CA CA 2053536 patent/CA2053536A1/en not_active Abandoned
- 1991-11-19 MX MX9102125A patent/MX9102125A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108382001A (en) * | 2018-04-27 | 2018-08-10 | 连云港市振扬纸品有限公司 | Make the continous way production system of paper tube |
| CN108382001B (en) * | 2018-04-27 | 2023-09-15 | 连云港市振扬纸品有限公司 | Continuous production system for manufacturing paper tubes |
Also Published As
| Publication number | Publication date |
|---|---|
| MX9102125A (en) | 1993-01-01 |
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| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |