CA1065657A - Method of and means for sheet transfer and embossing - Google Patents
Method of and means for sheet transfer and embossingInfo
- Publication number
- CA1065657A CA1065657A CA289,088A CA289088A CA1065657A CA 1065657 A CA1065657 A CA 1065657A CA 289088 A CA289088 A CA 289088A CA 1065657 A CA1065657 A CA 1065657A
- Authority
- CA
- Canada
- Prior art keywords
- web
- conveyor belt
- reel
- leading end
- end portion
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/12—Crêping
- B31F1/122—Crêping the paper being submitted to an additional mechanical deformation other than crêping, e.g. for making it elastic in all directions
Abstract
ABSTRACT OF THE DISCLOSURE
A continuously advancing tissue paper web is separated from a Yankee dryer roll and creper, and then received and trans-ported on an endless fabric conveyor belt travelling toward and over a reel drum. At the reeling station the web is threaded onto a reel spool and wound into a parent roll pressing against the conveyor belt running over the reel drum and thereby embossing the web in the roll/drum nip. Means are provided for automatically air threading the web onto the reel spool. For higher bulk tissue creped sheet, additional dry embossing may be effected while the sheet is being transported by the conveyor belt.
A continuously advancing tissue paper web is separated from a Yankee dryer roll and creper, and then received and trans-ported on an endless fabric conveyor belt travelling toward and over a reel drum. At the reeling station the web is threaded onto a reel spool and wound into a parent roll pressing against the conveyor belt running over the reel drum and thereby embossing the web in the roll/drum nip. Means are provided for automatically air threading the web onto the reel spool. For higher bulk tissue creped sheet, additional dry embossing may be effected while the sheet is being transported by the conveyor belt.
Description
~6S~i~7 This invention relates to a new and improved method of and means for sheet transfer and embossing, and is more particularly concerned with the handling and treatment of creped paper sheet web between creping on a Yankee dryer and reeling of the web.
Heretofore the web of creped paper sheet from a Yankee creping doctor has been transferred to the wind-up reel largely unsupported except possibly for one or m~re small diameter paper carrying rollers and sometimes a single nip calendar. Such handling of the web has been satisfactory on machines where reel speeds have been ~elow about 3500 fpm. However, for increased reel speeds approaching 4500 to 7000 fpm or higher, the lightweight creped tissue sheet web becomes increasingly hard to handle in the neces-sary length of transfer distance from the Yankee dryer to the reel.
Furthermore, some tissue manufacturers in order to supply increasing consumer demand for high bulk, lightweight tissue sheets require dry embossing to create higher bulk, and this has heretofore neces-sitated additional embossing equipment.
According to prior practice, threading of the web onto the reel spool has presented a problem.
An important object of the present invention is to provide a new and improved method of and means for sheet transfer and embossing which will overcome the disadvantages, drawbacks, in-efficiencies shortcomings and problems inherent in prior practice.
Another object of the invention is to provide a new and improved method of and means for transferring and threading creped sheet web from dryer and creping means to a reel spool.
Another object of the invention is to provide a new and improved method of and means for embossing a creped sheet web as it is being wound into a parent roll.
~a~s~s7 Still another object of the invention is to provide a new - and improved method of and means for automatically threading a .
creped sheet web onto a reel spool.
Still another object of the invention is to provide a new and improved method of and means for effecting multiple embossments of a creped sheet web continuously advancing between a creper and a reeling station.
According to features of the invention there is provided a method of and means for sheet transfer and embossing wherein a tissue paper web is continuously advanced from creping means, and received on a supporting run of an endless fabric conveyor belt on which the web is transported toward a reel drum over which the web is transported toward a reel drum over which the belt runs. :
The continuously advancing web is then threaded onto and continuously wound into a parent roll on a reel spool adjacent to the reel drum.
The winding parent roll is pressed against the reel drum and the fabric conveyor belt running over the reel drum, thereby embossing the web in the drum/roll nip.
According to other features of the invention a method of 20 and apparatus are provided for transporting a creped tissue paper web and automatically threading it onto reeling means. ~..... ... ... -According to additional features of the invention a method :
- of and means are provided for dry embossing a creped tissue web at a reeling station, and also optionally upstream from the reeling station. .
other objects, features and advantages of khe invention will be readily apparent from the following description of representative embodiments thereof, taken in conjunction with the accompanying drawing although variations and modifications may be ~S6S~
effected without departing from the spirit and scope of the novel concepts embodied in the disclosure, and in which:
Fig~ 1 is a schematic elevational view of the creping, -- transfer and reeling section of a creped tissue paper making machine and Fig. 2 is a similar schematic elevations view showing a modification.
On reference to the drawings, a papermaking machine frame 5 supports means for drying and creping a tissue paper sheet web W~
such means desirably comprising a rotatably driven Yankee dryer roll 7 which, as is usual, is a relatively large metal roll that is provided with a smooth (mirror), finish for receiving and dewatering the web W thereon and is also generally provided with means for heating the interior thereof (indicated diagrammatically at H) in order to accelerate the dewatering of the web moving on the travelling Yankee dryer surface. The largely dewatered web W
is directed onto the lower portion of the Yankee dryer 7 by means of a pasting roll 8 which may, if desired, be a suction roll.
From the pasting nip between the Yankee dryer 7 and the roll 8, the web travels on the preferably heated surface of the Yankee dryer 7 to a creping device 9 which comprises one or a plurality of creping doctors 10 beyond which the web W leaves the Yankee dryer 7 and heads toward a reeling station 11.
At the beginning of the papermaking operation, the leading end of the web W after passing the creping station 9 is separated and deflected from the Yankee roll 7 as by means of a creping doctor 10 and received on a supporting run 13 of an endless fabric conveyor belt 14 which continuously supports and transports the web W to the reeling station 11. The fabric conveyor belt 14 is of full ~lO~S~S7 machine width so that i~ fully supports the entire width of the web W. Optinally the fabric of the endless conveyor belt 14 may or may not be woven in a continuous loop. I~ it is not a continuous loop, a pin type seam may join the ends. By preference the fabric mesh may be in the range of 10 to 80 mech, and of at least sufficient porosity to permit air to be blown through the belt.
~s closely adjacent as practicable to the creping doc~or 10, - the receiving end of the transporting run 13 of the conveyor belt 14 starts over a lead-in roll 15, to which the return run of the 10 belt 14 travels from a stretch roll 17. This roll 17 may be adjustably mounted as indicated by the arrow 18 for tensioning the -belt, in addition to or independently of a roll 19 for guiding the belt and which may also be adjustable as indicated by the ~ ;
directional arrow 20. At the reeling station 11, the fabric con- ~
veyor belt 14 is trained to run over a reel roll or drum 21 which ;
is desirably driven by power means, not shown, to drive the conveyor belt 14. -As the leading end of the web W leaves the Yankee dryer roll 7 it is guided across the narrow gap between the roll 7 and the receiving end of the transporting run 13 of the conveyor belt 14 - by means of an air threading shower projected from an orificed manifold 22 located adjacently below the gap. This prevents the leading end of the web from dipping down through the gap, and assures its being propelled onto the continuously travelling conveyor belt 14 as it runs up over the lead-in roll 15 into the transport~
ing run 13. It will be understood that the speed of travel of the conveyor belt 14 will be coordinated with the peripheral speed of rotation of the Yankee dryer drum 7 so that the web W will be efficiently transported to the reeling station 11. Such transporting . . .
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efficiency is enhanced by inclination of the transporting run 13 generally downwardly ~rom the lead-in roll 15 to the reeling drum 21.
When the advancing end of the web W as transported on the carrying run 13 of the conveyor belt L4 reaches the reeling station 11, it travels under a reeling core ox spool 23 which presses down into the conveyor belt sufficiently to maintain good traction. The web W then normally travels on with the conveyor belt and partially around the reel drum 21. As the leading end of the web reaches the reel drum 21, downward cur~ing of the web around the reel drum is assisted by means of an air shower delivered from a manifold 24 - located in spaced rela~ion generally a~ove the right side of the reel drum 21 as viewed in Fig. 1. Automatic threading of the web onto the reel spool 23 is initiated after the leading end of the web has travelled with the belt a short distance such as about 90 around the reel drum 21, by upward billowing of that portion of the web advancing past the reel spool 23 by means of an air shower direc;ed from device such as a manifold 25 located below the fabric conveyor belt and forcing the air upwardly through the conveyor belt in the area between the reel spool 23 in the threading position and the reel drum 21. Thereby the advancing end portion of the web is lifted as shown at a. Since the area of the conveyor belt throu~h which the lifting or billowing air shower is directed is spaced upstream from the area where the air shower from the manifold 24 pushes the web toward the reel drum 21, the advancing extremity of the web is frictionally restrained against upward movement under the influence of the lifting air shower from the manifold 25 so that the web continues to billow upwardly to a position generally indicated at b higher than the shower manifold 24~ Tb assure that the lead-ng end of the web W does not continue to adhere to the conveyor ' " . `
--- ~O~Sf~S7 -- belt and defeat the automatic air threading of the web onto the reel spool 23, a web dislodging safety air shower is directed by means such as an air shower manifold 27, generally upwardly from below the reel drum 21 toward the leading end of the web to dis- ;~
lodge it from the belt and loosen the advancing end portion of the web to facilitate the billowing action of the air shower from the manifold 25. As a safety precaution against possible adherence of - the leading end of the web to the conveyor belt with such tenancity as to escape the air shower from the manifold 27, a positive dislodging air shower is projected by means of a shower manifold ~:
28 located akove the return run of the conveyor belt immediately after it leaves the reel drum 21, such air shower projecting through .~., the fabric of the belt and blowing the advancing end of the web downwardly and away from the belt and generally toward the air shower device 27.
Upon attaining the air shower thrus billow b, the air shower directed from the shower device 24 thrusting laterally .
generally toward the reel spool 23, deflects the buckled web toward position c where it overlies the reel spool 23. Under the con~
tinuing force of the air showers from the devices 24 and 25, the web continues to buckle and deflect to generally position d and the envelope that has thus developed extends over and beyond the reel spool tothe point where it folds down and collapses onto the on running side of the reel spool as indicated at position e and is drawn into the nip of the reel spool and the belt run 13, where~
upon the web end portion winds onto the reel spool. Upon completion of the automatic air threading as thus effected, the reel spool -is moved by suitable cam or other means (not shown) into the dash line position over the top of and into contact with the reel drum ~0~51~5~
21 through the web being wound on the reel spool and the conveyor belt and then is continuously held in engagement with the reel drum as the reel spool is lowered to secondary rails 29. Then as winding of the web continues onto the reel spool and a parent roll 30 develops, continuous thrust of the parent roll toward and against the fabric belt running o~er the reel drum 21 effects continuous dry embossing of the web throughout the parent roll winding. winding of the parent roll 30 and continuous dry emboss-ing of the web continues until the roll approaches full weight diameter. In the meantime another one of the reel spools 23 is placed in the initial or threading position on the supporting run 13 of the conveyor belt adjacently upstream from the reel drum 21.
Upon the parent roll 30 reaching the desired si2e, it is shifted on the rails 29 away from the reel drum 21 substantially as shown in Fig. 2, the automatic air threading system which during the parent roll winding may have been shut-off is reactivated. Thereby a new air threading cycle is initiated before or after severing the leading end portion of the web. The same aut^matic air threading sequence as already described is then followed. The full parent roll is moved to the discharge end of the rails 29 as shown in Fig. 1, making room for the next succeeding parent roll to be wound as a continuous process.
If preferred, the automatic air reel spool threading may be assisted by a curved, pivoted sheet tucker 31 (Fig. 2) which generally overlies the threading position of the reel spool 23 and the reel drum 21 in the reeling station 11. In a preferred form, as shown, the sheet tucker 31 is of generally ogee shape having a generally downwardly bowed lead-in section 32 adjacent to the air shower device 24 and acting to hold the billowing web in the position b depressed adjacent to the shower device 24 to ~S6Si'~
the shower device 24 to facilitate action of the shcwer device in driving the billowing tuck of the web more rapidly into the succeed-ing positions c, d and e assisted by a downwardly concave web directing portion 33 of the tucker. The guidance provided by the tucker 31 eliminates any possibility of the air motivated thread-ing leading portion of the web from escaping or deflecting away from the reel spool during thethreading operation. Upward deflection of the tucker about a pivot 31a permits shifting movements of the reel spool 23.
It will be understood, of course, that all of the air shower devices 22, 24, 25, 27 and 28 may be supplied from individual or common compressed air source, that each of the devices may ha~e the air pressure thereat and therefrom regulated to suit the particular location and function of the particular air shower device. Further, any suitable sequential operation control may be employed using known electro-mechanical and pneumatic control devices for the purpose. ~o specific means for severing the web from the parent roll on completion of winding of the parent roll has been shown because such means are well known in the art. -If additional dry embossing of the creped tissue sheet to obtain higher bulk is desired, an embossing press 34 may be mounted to act on the web W while it is transported along the supporting run 13 of the conveyor belt. Such an additional embossing press may comprise a hard co~er roll 35 running in engagement with the underside of the belt run 13 while a soft rubber-like upper roll 37 presses the belt and the tissue web carried thereby against the roll 35.
If for any reason it is deemed desirable, a second fabric endless belt 3~ may be guided to run on top of the sheet web W carried . .
~ ' ' ' ' ' ' . ' ': ' .
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~( 16565'7 by the supporting run 13 of the conveyor belt lL~. Suitable rolls 39 and 40 may be installed for guidin~J the opposite ends of the belt 38 adjacent to but spaced from respectively the reeling station 11 and the creping doctor 10. Where the auxiliary belt 38 is em-ployed, it will be understood, bhat the embossing press 34 may or may not be employed, as preferred. If the embossing press 34 is employed, the embossing action of the upper embossing roll 37 will be through the belt 38 toward the web intervening between the con-veyor belt run 13 and the belt 38 and the nip of the rolls 35 and 37.
From the foregoing it will be apparent that the present invention provides for high speed operation wherein the web W may be produced at speeds of up to 7000 fpm. Not only is drying and creping of the tissue sheet provided for, but high speed operation is facilitated and enhanced by substantially full support of the creped web from the creper to the reeling station, automatic air threading is provided for, and dry embossing is achieved to the extent desired in a simple and efficient manner.
It will be understood that variations and modifications may be effected without departing from the spirit and scope of the novel concepts of this invention.
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Heretofore the web of creped paper sheet from a Yankee creping doctor has been transferred to the wind-up reel largely unsupported except possibly for one or m~re small diameter paper carrying rollers and sometimes a single nip calendar. Such handling of the web has been satisfactory on machines where reel speeds have been ~elow about 3500 fpm. However, for increased reel speeds approaching 4500 to 7000 fpm or higher, the lightweight creped tissue sheet web becomes increasingly hard to handle in the neces-sary length of transfer distance from the Yankee dryer to the reel.
Furthermore, some tissue manufacturers in order to supply increasing consumer demand for high bulk, lightweight tissue sheets require dry embossing to create higher bulk, and this has heretofore neces-sitated additional embossing equipment.
According to prior practice, threading of the web onto the reel spool has presented a problem.
An important object of the present invention is to provide a new and improved method of and means for sheet transfer and embossing which will overcome the disadvantages, drawbacks, in-efficiencies shortcomings and problems inherent in prior practice.
Another object of the invention is to provide a new and improved method of and means for transferring and threading creped sheet web from dryer and creping means to a reel spool.
Another object of the invention is to provide a new and improved method of and means for embossing a creped sheet web as it is being wound into a parent roll.
~a~s~s7 Still another object of the invention is to provide a new - and improved method of and means for automatically threading a .
creped sheet web onto a reel spool.
Still another object of the invention is to provide a new and improved method of and means for effecting multiple embossments of a creped sheet web continuously advancing between a creper and a reeling station.
According to features of the invention there is provided a method of and means for sheet transfer and embossing wherein a tissue paper web is continuously advanced from creping means, and received on a supporting run of an endless fabric conveyor belt on which the web is transported toward a reel drum over which the web is transported toward a reel drum over which the belt runs. :
The continuously advancing web is then threaded onto and continuously wound into a parent roll on a reel spool adjacent to the reel drum.
The winding parent roll is pressed against the reel drum and the fabric conveyor belt running over the reel drum, thereby embossing the web in the drum/roll nip.
According to other features of the invention a method of 20 and apparatus are provided for transporting a creped tissue paper web and automatically threading it onto reeling means. ~..... ... ... -According to additional features of the invention a method :
- of and means are provided for dry embossing a creped tissue web at a reeling station, and also optionally upstream from the reeling station. .
other objects, features and advantages of khe invention will be readily apparent from the following description of representative embodiments thereof, taken in conjunction with the accompanying drawing although variations and modifications may be ~S6S~
effected without departing from the spirit and scope of the novel concepts embodied in the disclosure, and in which:
Fig~ 1 is a schematic elevational view of the creping, -- transfer and reeling section of a creped tissue paper making machine and Fig. 2 is a similar schematic elevations view showing a modification.
On reference to the drawings, a papermaking machine frame 5 supports means for drying and creping a tissue paper sheet web W~
such means desirably comprising a rotatably driven Yankee dryer roll 7 which, as is usual, is a relatively large metal roll that is provided with a smooth (mirror), finish for receiving and dewatering the web W thereon and is also generally provided with means for heating the interior thereof (indicated diagrammatically at H) in order to accelerate the dewatering of the web moving on the travelling Yankee dryer surface. The largely dewatered web W
is directed onto the lower portion of the Yankee dryer 7 by means of a pasting roll 8 which may, if desired, be a suction roll.
From the pasting nip between the Yankee dryer 7 and the roll 8, the web travels on the preferably heated surface of the Yankee dryer 7 to a creping device 9 which comprises one or a plurality of creping doctors 10 beyond which the web W leaves the Yankee dryer 7 and heads toward a reeling station 11.
At the beginning of the papermaking operation, the leading end of the web W after passing the creping station 9 is separated and deflected from the Yankee roll 7 as by means of a creping doctor 10 and received on a supporting run 13 of an endless fabric conveyor belt 14 which continuously supports and transports the web W to the reeling station 11. The fabric conveyor belt 14 is of full ~lO~S~S7 machine width so that i~ fully supports the entire width of the web W. Optinally the fabric of the endless conveyor belt 14 may or may not be woven in a continuous loop. I~ it is not a continuous loop, a pin type seam may join the ends. By preference the fabric mesh may be in the range of 10 to 80 mech, and of at least sufficient porosity to permit air to be blown through the belt.
~s closely adjacent as practicable to the creping doc~or 10, - the receiving end of the transporting run 13 of the conveyor belt 14 starts over a lead-in roll 15, to which the return run of the 10 belt 14 travels from a stretch roll 17. This roll 17 may be adjustably mounted as indicated by the arrow 18 for tensioning the -belt, in addition to or independently of a roll 19 for guiding the belt and which may also be adjustable as indicated by the ~ ;
directional arrow 20. At the reeling station 11, the fabric con- ~
veyor belt 14 is trained to run over a reel roll or drum 21 which ;
is desirably driven by power means, not shown, to drive the conveyor belt 14. -As the leading end of the web W leaves the Yankee dryer roll 7 it is guided across the narrow gap between the roll 7 and the receiving end of the transporting run 13 of the conveyor belt 14 - by means of an air threading shower projected from an orificed manifold 22 located adjacently below the gap. This prevents the leading end of the web from dipping down through the gap, and assures its being propelled onto the continuously travelling conveyor belt 14 as it runs up over the lead-in roll 15 into the transport~
ing run 13. It will be understood that the speed of travel of the conveyor belt 14 will be coordinated with the peripheral speed of rotation of the Yankee dryer drum 7 so that the web W will be efficiently transported to the reeling station 11. Such transporting . . .
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: .' ' ,` ` ~', '' ', ' , ': . , - `\
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efficiency is enhanced by inclination of the transporting run 13 generally downwardly ~rom the lead-in roll 15 to the reeling drum 21.
When the advancing end of the web W as transported on the carrying run 13 of the conveyor belt L4 reaches the reeling station 11, it travels under a reeling core ox spool 23 which presses down into the conveyor belt sufficiently to maintain good traction. The web W then normally travels on with the conveyor belt and partially around the reel drum 21. As the leading end of the web reaches the reel drum 21, downward cur~ing of the web around the reel drum is assisted by means of an air shower delivered from a manifold 24 - located in spaced rela~ion generally a~ove the right side of the reel drum 21 as viewed in Fig. 1. Automatic threading of the web onto the reel spool 23 is initiated after the leading end of the web has travelled with the belt a short distance such as about 90 around the reel drum 21, by upward billowing of that portion of the web advancing past the reel spool 23 by means of an air shower direc;ed from device such as a manifold 25 located below the fabric conveyor belt and forcing the air upwardly through the conveyor belt in the area between the reel spool 23 in the threading position and the reel drum 21. Thereby the advancing end portion of the web is lifted as shown at a. Since the area of the conveyor belt throu~h which the lifting or billowing air shower is directed is spaced upstream from the area where the air shower from the manifold 24 pushes the web toward the reel drum 21, the advancing extremity of the web is frictionally restrained against upward movement under the influence of the lifting air shower from the manifold 25 so that the web continues to billow upwardly to a position generally indicated at b higher than the shower manifold 24~ Tb assure that the lead-ng end of the web W does not continue to adhere to the conveyor ' " . `
--- ~O~Sf~S7 -- belt and defeat the automatic air threading of the web onto the reel spool 23, a web dislodging safety air shower is directed by means such as an air shower manifold 27, generally upwardly from below the reel drum 21 toward the leading end of the web to dis- ;~
lodge it from the belt and loosen the advancing end portion of the web to facilitate the billowing action of the air shower from the manifold 25. As a safety precaution against possible adherence of - the leading end of the web to the conveyor belt with such tenancity as to escape the air shower from the manifold 27, a positive dislodging air shower is projected by means of a shower manifold ~:
28 located akove the return run of the conveyor belt immediately after it leaves the reel drum 21, such air shower projecting through .~., the fabric of the belt and blowing the advancing end of the web downwardly and away from the belt and generally toward the air shower device 27.
Upon attaining the air shower thrus billow b, the air shower directed from the shower device 24 thrusting laterally .
generally toward the reel spool 23, deflects the buckled web toward position c where it overlies the reel spool 23. Under the con~
tinuing force of the air showers from the devices 24 and 25, the web continues to buckle and deflect to generally position d and the envelope that has thus developed extends over and beyond the reel spool tothe point where it folds down and collapses onto the on running side of the reel spool as indicated at position e and is drawn into the nip of the reel spool and the belt run 13, where~
upon the web end portion winds onto the reel spool. Upon completion of the automatic air threading as thus effected, the reel spool -is moved by suitable cam or other means (not shown) into the dash line position over the top of and into contact with the reel drum ~0~51~5~
21 through the web being wound on the reel spool and the conveyor belt and then is continuously held in engagement with the reel drum as the reel spool is lowered to secondary rails 29. Then as winding of the web continues onto the reel spool and a parent roll 30 develops, continuous thrust of the parent roll toward and against the fabric belt running o~er the reel drum 21 effects continuous dry embossing of the web throughout the parent roll winding. winding of the parent roll 30 and continuous dry emboss-ing of the web continues until the roll approaches full weight diameter. In the meantime another one of the reel spools 23 is placed in the initial or threading position on the supporting run 13 of the conveyor belt adjacently upstream from the reel drum 21.
Upon the parent roll 30 reaching the desired si2e, it is shifted on the rails 29 away from the reel drum 21 substantially as shown in Fig. 2, the automatic air threading system which during the parent roll winding may have been shut-off is reactivated. Thereby a new air threading cycle is initiated before or after severing the leading end portion of the web. The same aut^matic air threading sequence as already described is then followed. The full parent roll is moved to the discharge end of the rails 29 as shown in Fig. 1, making room for the next succeeding parent roll to be wound as a continuous process.
If preferred, the automatic air reel spool threading may be assisted by a curved, pivoted sheet tucker 31 (Fig. 2) which generally overlies the threading position of the reel spool 23 and the reel drum 21 in the reeling station 11. In a preferred form, as shown, the sheet tucker 31 is of generally ogee shape having a generally downwardly bowed lead-in section 32 adjacent to the air shower device 24 and acting to hold the billowing web in the position b depressed adjacent to the shower device 24 to ~S6Si'~
the shower device 24 to facilitate action of the shcwer device in driving the billowing tuck of the web more rapidly into the succeed-ing positions c, d and e assisted by a downwardly concave web directing portion 33 of the tucker. The guidance provided by the tucker 31 eliminates any possibility of the air motivated thread-ing leading portion of the web from escaping or deflecting away from the reel spool during thethreading operation. Upward deflection of the tucker about a pivot 31a permits shifting movements of the reel spool 23.
It will be understood, of course, that all of the air shower devices 22, 24, 25, 27 and 28 may be supplied from individual or common compressed air source, that each of the devices may ha~e the air pressure thereat and therefrom regulated to suit the particular location and function of the particular air shower device. Further, any suitable sequential operation control may be employed using known electro-mechanical and pneumatic control devices for the purpose. ~o specific means for severing the web from the parent roll on completion of winding of the parent roll has been shown because such means are well known in the art. -If additional dry embossing of the creped tissue sheet to obtain higher bulk is desired, an embossing press 34 may be mounted to act on the web W while it is transported along the supporting run 13 of the conveyor belt. Such an additional embossing press may comprise a hard co~er roll 35 running in engagement with the underside of the belt run 13 while a soft rubber-like upper roll 37 presses the belt and the tissue web carried thereby against the roll 35.
If for any reason it is deemed desirable, a second fabric endless belt 3~ may be guided to run on top of the sheet web W carried . .
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~( 16565'7 by the supporting run 13 of the conveyor belt lL~. Suitable rolls 39 and 40 may be installed for guidin~J the opposite ends of the belt 38 adjacent to but spaced from respectively the reeling station 11 and the creping doctor 10. Where the auxiliary belt 38 is em-ployed, it will be understood, bhat the embossing press 34 may or may not be employed, as preferred. If the embossing press 34 is employed, the embossing action of the upper embossing roll 37 will be through the belt 38 toward the web intervening between the con-veyor belt run 13 and the belt 38 and the nip of the rolls 35 and 37.
From the foregoing it will be apparent that the present invention provides for high speed operation wherein the web W may be produced at speeds of up to 7000 fpm. Not only is drying and creping of the tissue sheet provided for, but high speed operation is facilitated and enhanced by substantially full support of the creped web from the creper to the reeling station, automatic air threading is provided for, and dry embossing is achieved to the extent desired in a simple and efficient manner.
It will be understood that variations and modifications may be effected without departing from the spirit and scope of the novel concepts of this invention.
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Claims (16)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of sheet transfer and embossing, comprising:
continuously advancing a tissue paper web from creping means;
receiving the continuously advancing web on a supporting run of an endless fabric conveyor belt starting closely adjacent to the creping means;
advancing the web on the conveyor belt toward a reel drum over which the belt runs;
treading the continuously advancing leading end portion of the web onto a reel spool adjacent to said reel drum;
continuously winding the threaded web into a parent roll on the reel spool;
pressing the parent roll, as it is being wound, against the fabric conveyor belt running over said reel drum;
and in the nip of the parent roll and the reel drum embossing the continuously advancing web.
continuously advancing a tissue paper web from creping means;
receiving the continuously advancing web on a supporting run of an endless fabric conveyor belt starting closely adjacent to the creping means;
advancing the web on the conveyor belt toward a reel drum over which the belt runs;
treading the continuously advancing leading end portion of the web onto a reel spool adjacent to said reel drum;
continuously winding the threaded web into a parent roll on the reel spool;
pressing the parent roll, as it is being wound, against the fabric conveyor belt running over said reel drum;
and in the nip of the parent roll and the reel drum embossing the continuously advancing web.
2. A method according to claim 1, comprising generating an air shower under a leading end of the web in a gap between the creping means and the conveyor belt and thereby transferring the leading end across the gap to the conveyor belt.
3. A method according to claim 1, comprising thrusting the reel spool against the fabric conveyor belt adjacently in advance of said reel drum, and threading the web onto the reel spool while the reel spool is pressed against the conveyor belt.
4. A method according to claim 3, comprising directing air against the leading end portion of the web and thereby effecting said threading of the web onto the reel spool.
5. A method according to claim 4, comprising driving air through the fabric conveyor belt and thereby lifting the leading end portion of the web from the belt, and directing air against the lifted leading end portion of the web and thereby driving the leading end portion into threading engagement with the reel spool rotating in engagement with the belt.
6. A method according to claim 1, comprising driving air through the fabric conveyor belt adjacent to said reel spool and thereby dislodging the advancing end portion of the web from the conveyor belt in the vicinity of the reel drum for effecting said threading.
7. A method according to claim 1, comprising additionally embossing the continuously advancing web on said conveyor belt in advance of said reel drum.
8. A method according to claim 1, comprising lifting the leading end portion of the web from the fabric conveyor belt by impinging air onto the leading end portion through the conveyor belt to effect said threading, and then guiding the lifted leading end portion into threaded engagement with the reel spool.
9. Apparatus for sheet transfer and embossing, comprising:
means for continuously advancing a tissue paper sheet from creping means;
means for receiving the continuously advancing web comprising a supporting run of an endless fabric conveyor belt starting closely adjacent to the creping means;
a reel drum over which the belt runs and toward which the web is advanced on the conveyor belt supporting run;
a reel spool adjacent to said reel drum;
and means for threading the continuously advancing leading end portion of the web onto the reel spool;
said reel spool being operative for continuously winding the web into a parent roll on the reel spool in a position to press the parent roll as it is being wound against the fabric conveyor belt running over said reel drum whereby the nip of the parent roll and the reel drum will effect embossing of the continuously advancing web.
means for continuously advancing a tissue paper sheet from creping means;
means for receiving the continuously advancing web comprising a supporting run of an endless fabric conveyor belt starting closely adjacent to the creping means;
a reel drum over which the belt runs and toward which the web is advanced on the conveyor belt supporting run;
a reel spool adjacent to said reel drum;
and means for threading the continuously advancing leading end portion of the web onto the reel spool;
said reel spool being operative for continuously winding the web into a parent roll on the reel spool in a position to press the parent roll as it is being wound against the fabric conveyor belt running over said reel drum whereby the nip of the parent roll and the reel drum will effect embossing of the continuously advancing web.
10. Apparatus according to claim 9, including means for generating an air shower under a leading end of the web in a gap between the creping means and the conveyor belt for thereby transferring the leading end across the gap to the conveyor belt.
11. Apparatus according to claim 9, wherein said reel spool thrusts against the fabric conveyor belt adjacently in advance of said reel drum, and means for threading the web onto the reel spool while the reel spool is pressed against the conveyor belt.
12. Apparatus according to claim 11, wherein said means for threading comprise a device for directing air against the leading end portion of the web.
13. Apparatus according to claim 12, wherein said device is located to drive air through the fabric conveyor belt and thereby lift the leading end portion of the web from the belt, and an additional device for directing air against the lifted leading end portion of the web and thereby driving the leading end portion into threading engagement with the reel spool rotating in engagement with the belt.
14. Apparatus according to claim 11, wherein said air directing device causes the leading end portion of the web to billow toward the reel drum, and a tucker operatively related to the reel spool and the air directing device for guiding the web end portion into threading relation to the reel spool.
15. Apparatus according to claim 9, wherein said threading means comprise a device for driving air through the fabric conveyor belt adjacent to said reel spool to dislodge the advancing end portion of the web from the conveyor belt in the vicinity of the reel drum for effecting the threading action of said thread-ing means.
16. Apparatus according to claim 9, comprising means for additionally embossing the continuously advancing web on the conveyor belt in advance of said reel drum.
17. Apparatus according to claim 9, wherein said threading means comprise a device for impinging air onto the leading end portion of the web through the conveyor belt to effect lifting of the leading end portion of the web from the fabric conveyor belt, and means for guiding the lifted leading end portion into threaded engagement with the reel spool.
16. Apparatus according to claim 9, comprising means for additionally embossing the continuously advancing web on the conveyor belt in advance of said reel drum.
17. Apparatus according to claim 9, wherein said threading means comprise a device for impinging air onto the leading end portion of the web through the conveyor belt to effect lifting of the leading end portion of the web from the fabric conveyor belt, and means for guiding the lifted leading end portion into threaded engagement with the reel spool.
16. Apparatus according to claim 17, wherein said guiding means comprises a pivoted tucker overlying the reel spool and the reel drum.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/754,369 US4087319A (en) | 1976-12-27 | 1976-12-27 | Method of and means for sheet transfer to and embossing at a reeling station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1065657A true CA1065657A (en) | 1979-11-06 |
Family
ID=25034493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA289,088A Expired CA1065657A (en) | 1976-12-27 | 1977-10-17 | Method of and means for sheet transfer and embossing |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4087319A (en) |
| JP (1) | JPS5381711A (en) |
| BR (1) | BR7707490A (en) |
| CA (1) | CA1065657A (en) |
| ES (1) | ES463929A1 (en) |
| GB (1) | GB1593198A (en) |
| IT (1) | IT1088332B (en) |
| MX (1) | MX145352A (en) |
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| JPS596978U (en) * | 1982-07-05 | 1984-01-17 | 凸版印刷株式会社 | Shaking container |
| US4682942A (en) * | 1985-08-12 | 1987-07-28 | Scott Paper Company | Dry formed-web embossing apparatus |
| GB9108763D0 (en) * | 1991-04-24 | 1991-06-12 | Bibby Paper Limited J | Manufacture of sterilisable wrapping paper material |
| US5667636A (en) * | 1993-03-24 | 1997-09-16 | Kimberly-Clark Worldwide, Inc. | Method for making smooth uncreped throughdried sheets |
| DE4412624C2 (en) * | 1994-04-13 | 1998-04-09 | Kleinewefers Gmbh | Method and device for treating a material web |
| US6551453B2 (en) | 1995-01-10 | 2003-04-22 | The Procter & Gamble Company | Smooth, through air dried tissue and process of making |
| CN1087046C (en) * | 1995-01-10 | 2002-07-03 | 普罗克特和甘保尔公司 | Smooth, through air dried tissue and process of making same |
| US6821386B2 (en) * | 1995-01-10 | 2004-11-23 | The Procter & Gamble Company | Smooth, micropeak-containing through air dried tissue |
| US5593545A (en) * | 1995-02-06 | 1997-01-14 | Kimberly-Clark Corporation | Method for making uncreped throughdried tissue products without an open draw |
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| US3355349A (en) * | 1964-12-14 | 1967-11-28 | Andrew G Devlin | Apparatus for conveying lead strip from driers to calenders in paper-making |
| US3203850A (en) * | 1965-01-12 | 1965-08-31 | St Regis Paper Co | Method of forming creped and embossed extensible paper |
| US3846228A (en) * | 1972-11-13 | 1974-11-05 | Beloit Corp | Forming tissue paper by pressing the web while on an uprunning forming wire and transferring the web directly to a yankee dryer |
-
1976
- 1976-12-27 US US05/754,369 patent/US4087319A/en not_active Expired - Lifetime
-
1977
- 1977-10-17 CA CA289,088A patent/CA1065657A/en not_active Expired
- 1977-11-07 ES ES463929A patent/ES463929A1/en not_active Expired
- 1977-11-09 GB GB46593/77A patent/GB1593198A/en not_active Expired
- 1977-11-09 BR BR7707490A patent/BR7707490A/en unknown
- 1977-11-24 IT IT30028/77A patent/IT1088332B/en active
- 1977-12-09 MX MX171653A patent/MX145352A/en unknown
- 1977-12-12 JP JP14826977A patent/JPS5381711A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| BR7707490A (en) | 1978-08-01 |
| US4087319A (en) | 1978-05-02 |
| MX145352A (en) | 1982-01-27 |
| ES463929A1 (en) | 1978-07-01 |
| IT1088332B (en) | 1985-06-10 |
| JPS5381711A (en) | 1978-07-19 |
| GB1593198A (en) | 1981-07-15 |
| JPS5730070B2 (en) | 1982-06-26 |
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