EP1527898A1 - Verfahren zur Herstellung eines Hyginepapierprodukts, Vorrichtung zur Herstellung und das Hygienepapierprodukt - Google Patents

Verfahren zur Herstellung eines Hyginepapierprodukts, Vorrichtung zur Herstellung und das Hygienepapierprodukt Download PDF

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Publication number
EP1527898A1
EP1527898A1 EP03024997A EP03024997A EP1527898A1 EP 1527898 A1 EP1527898 A1 EP 1527898A1 EP 03024997 A EP03024997 A EP 03024997A EP 03024997 A EP03024997 A EP 03024997A EP 1527898 A1 EP1527898 A1 EP 1527898A1
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EP
European Patent Office
Prior art keywords
pattern
web
unit
roll
applying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03024997A
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English (en)
French (fr)
Inventor
Günther Zöller
Bernhard Dr. Reichling
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Essity Germany GmbH
Original Assignee
SCA Hygiene Products GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SCA Hygiene Products GmbH filed Critical SCA Hygiene Products GmbH
Priority to EP03024997A priority Critical patent/EP1527898A1/de
Priority to PCT/EP2004/009360 priority patent/WO2005049326A1/en
Priority to CN2004800251697A priority patent/CN1845825B/zh
Priority to RU2006118709/12A priority patent/RU2350473C2/ru
Priority to MXPA05012971A priority patent/MXPA05012971A/es
Priority to AU2004291216A priority patent/AU2004291216B2/en
Priority to EP04741421.4A priority patent/EP1677988B1/de
Priority to BRPI0415656-0A priority patent/BRPI0415656A/pt
Publication of EP1527898A1 publication Critical patent/EP1527898A1/de
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/02—Apparatus or machines for carrying out printing operations combined with other operations with embossing
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/02—Patterned paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M1/00—Inking and printing with a printer's forme
    • B41M1/24—Inking and printing with a printer's forme combined with embossing

Definitions

  • the present invention relates to a method of manufacture of hygiene paper products having a decorative structure and a functional structure, as well as an apparatus for such manufacture and the respective hygiene paper products.
  • a decorative structure in the sense of the present invention includes any kind of treatment that imparts an aesthetically pleasing pattern to the hygiene product. That is, the decorative structure is applied to the hygiene product for design purposes.
  • a typical decoration element is a print on at least one surface of a hygiene paper product.
  • functional structures serve to improve the properties of the hygiene paper product, that is the functional structure may improve the product thickness, absorbency, bulk softness, etc.
  • a typical functional element is embossing.
  • the hygiene paper product may be made of tissue paper or a non-woven.
  • a tissue paper is defined as a soft absorbent paper having a low basis weight.
  • the total basis weight of multiple-ply tissue products is preferably equal to a maximum of 65 g/m2, more preferably to a maximum of 50 g/m2. Its density is typically below 0.6 g/cm3, preferably below 0.30 g/cm3 and more preferably between 0.08 and 0.20 g/cm3.
  • tissue is distinguished from paper production by the its extremely low basis weight and its much higher tensile energy absorption index (see DIN EN 12625-4 and DIN EN 12625-5). Paper and tissue paper also differ in general with regard to the modulus of elasticity that characterizes the stress-strain properties of these planar products as a material parameter.
  • a tissue's high tensile energy absorption index results from the outer or inner creping.
  • the former is produced by compression of the paper web adhering to a dry cylinder as a result of the action of a crepe doctor or in the latter instance as a result of a difference in speed between two wires ("fabrics"). This causes the still moist, plastically deformable paper web to be internally broken up by compression and shearing, thereby rendering it more stretchable under load than an uncreped paper.
  • Moist tissue paper webs are usually dried by the so-called Yankee drying, the through air drying (TAD) or the impulse drying method.
  • the fibers contained in the tissue paper are mainly cellulosic fibres, such as pulp fibers from chemical pulp (e.g. Kraft sulfite and sulfate pulps), mechanical pulp (e.g. ground wood), thermo mechanical pulp, chemo-mechanical pulp and/or chemo-thermo mechanical pulp (CTMP). Pulps derived from both deciduous (hardwood) and coniferous (softwood) can be used.
  • the fibers may also be or include recycled fibers, which may contain any or all of the above categories.
  • the fibers can be treated with additives - such as fillers, softeners, such as quaternary ammonium compounds and binders, such as conventional dry-strength agents or wet-strength agents used to facilitate the original paper making or to adjust the properties thereof.
  • additives such as fillers, softeners, such as quaternary ammonium compounds and binders, such as conventional dry-strength agents or wet-strength agents used to facilitate the original paper making or to adjust the properties thereof.
  • the tissue paper may also contain other types of fibers, e.g. regenerated cellulosic fibres or synthetic fibers enhancing, for instance, strength, absorption, smoothness or softness of the paper.
  • Tissue paper may be converted to the final tissue product in many ways, for example, by embossing or laminating it into a multi-ply product, rolled or folded.
  • non-woven ISO 9092, DIN EN 29092
  • non-woven a large number of extremely varied production processes are used, such as the air-laid and spun-laced techniques as well as wet-laid techniques.
  • the non- woven includes mats, non-woven fabrics and finished products made thereof.
  • Non-wovens may also be called textile-like composite materials, which represent flexible porous fabrics that are not produced by the classic methods of weaving warp and weft or by looping.
  • non-wovens are produced by intertwining, cohesive or adhesive bonding of fibres, or a combination thereof.
  • the non-woven material can be formed of natural fibres, such as cellulose or cotton fibres, but can also consist of synthetic fibres, such as Polyethylene (PE), polypropylene (PP), polyurethane (PU), polyester, nylon or regenerated cellulose, or a mix of different fibres.
  • the fibres may, for example, be present in the form of endless fibres of pre-fabricated fibres of a finite length, as synthetic fibres produced in situ, or in the form of staple fibres.
  • the nonwovens according to the invention may thus consist of mixtures of synthetic and cellulose fibrous material, e.g. natural vegetable fibres (see ISO 9092, DIN EN 29092) .
  • Hygiene or wiping products primarily include all kind of dry-creped tissue paper, wet-creped paper and cellulose or pulp wadding or all kinds of nonwovens, or combinations, laminates or mixtures thereof.
  • Typical properties of these hygiene and wiping products include the ready ability to absorb tensile stress energy, their drapability, good textile-like flexibility, properties which are frequently referred to as bulk softness, a high surface softness, and a high specific volume with a perceptible thickness. As high a liquid absorbency as possible and, depending on the application, a suitable wet and dry strength as well as an appealable visual appearance of the outer product surface is desired.
  • these hygiene and wiping products allow these hygiene and wiping products to be used, for example, as cleaning wipes such as paper or non-woven wipes, windscreen cleaning wipes, industrial wipes, kitchen paper, or the like; as sanitary products such as for example toilet paper, paper or non-woven handkerchiefs, household 'towels, towels, and the like; as cosmetic wipes such as for example facials and as serviettes or napkins, just to mention some of the products that can be used.
  • the hygiene and wiping products can be dry, moist, wet or pre-treated in any manner.
  • the hygiene and wiping products may be folded, interleaved or individually placed, stacked or rolled, connected or not, in any suitable manner.
  • the products can be used for personal and household use as well as commercial and industrial use. They are adapted to absorb fluids, for decorative purposes, for packaging or even just as supporting material, as is common for example in medical practices or in hospitals. In terms of their wide variety, hygiene and wiping products are now considered to be everyday products.
  • hygiene paper products comprising a functional as well as a decorative structure.
  • these hygiene paper products are printed and then embossed.
  • the hygiene paper product which is typically made in a continuous form, is cut to discreet lengths as desired so as to form a single sheet or perforations are provided to constitute a line of weakness that enables the consumer to separate a single sheet from a plurality of sheets which may be present in the form of a roll, e.g. a toilet roll or a kitchen roll.
  • a roll e.g. a toilet roll or a kitchen roll.
  • the repeat rate for the printing decoration may be 378 mm, i.e., the printing decor length is 378 mm and is repeated every 378 mm.
  • the embossing pattern for example, is repeated every 30 mm. Consequently, the position of the print to the embossing is different in every single sheet, as the repeat rates of these treatments do not match.
  • the perforation repeat length sheet length
  • the position of the print and the embossing is different on every sheet, as the perforation repeat length also does not match the other repeat lengths. This leads, as shown in Fig. 1, to print designs disturbed by embossing and perforations everywhere in the design.
  • One sheet 1 of the hygiene paper product includes an embossed pattern 2 and printed pattern 3. Further, the sheet 1 is cut or perforated along a separation line 4. Because the repeat rates of the three elements embossing, printing and perforating do not match, e.g. the body of a printed animal interferes with the embossing and is partly cut or intersected, respectively, by the separation line 4.
  • EP-A-0958112 discloses to synchronize or register one of the functional structures or the decorative structure with cutting or perforating.
  • the spatial relationship between one pattern and the lines of termination i.e. the line that separates one sheet from another either by means of a perforation or line of weakness or cutting
  • the spatial relationship between one pattern and the lines of termination are set by adjusting either the rate of applying the pattern or the rate of applying the perforation or cutting, wherein the sheet is transported at a constant velocity.
  • US-A-3,594,552 discloses a system and method for synchronizing single printing modules with each other. All used printing cylinders are rotated in unison at the same peripheral speed and the repeat rates of each printing cylinder are the same. Any failure in the synchronization is detected by a scanner detecting a reference mark on the web to be printed and, additionally, by a rotary, digital encoder. If an error is detected, it is corrected by means of a compensating device.
  • a pattern size i.e., the length in the direction of movement of the web (in machine direction) needs to fit the respective processes.
  • the pattern length of printing or embossing is predetermined by the roll diameters, roll circumferences or an integer number of the circumferences, respectively.
  • a typical roll circumference of a printing press is 756 mm. Consequently, the pattern length predetermined by the roll circumference can be selected from 756, 378 or 252, etc., i.e. the circumference divided by an integer number will define the repeat lengths.
  • the maximum achievable repeat length is 756.
  • embossing where an engraved steel embossing roll with a certain diameter defines a maximum repeat length and the feasible integer divisions.
  • an embossing roll diameter of 530 mm having a circumference of 1664 mm may be used.
  • converting a material web requires a web tension greater than 0 in order to pull the web forward and to control web tracking.
  • the printing process, as well as the embossing process requires and creates web speed that matches roll surface speeds. That is, there is no slip.
  • the web elongation within the printing and embossing process varies.
  • state of the art control systems control web tension, so that the stress-strain relation of the substrate is varied. Especially in the case of a highly stretchable tissue, this results in varying elongation at constant web tension.
  • a minimum error/difference in repeat lengths or web elongation or speed will add up over time. For example, after 1000 repeats of the above example with 75,6 mm, even a small difference of some micrometers will add up after less than two minutes.
  • Fig. 2 schematically illustrates such a mismatch, which is also called "walking off pattern".
  • the method of manufacturing a hygiene paper product comprises the steps of providing a continuous paper web, moving the continuous web in a direction of its longitudinal extension, applying a repetitive decorative structure relative to the longitudinal extension of the web as a first pattern to the web by means of a first roll and applying a repetitive functional structure relative to the longitudinal extension of the web as a second pattern to the web by means of a second roll.
  • the repetitive surface speed of the continuous web and the phasing between the first roll and the second roll are concurrently controlled.
  • the surface speed of the continuous web in the first roll and/or the second roll can be controlled.
  • the printing and embossing processes are positioned close to each other; wherein either the step of applying the decorative structure or the step of applying the functional structure is conducted downstream of the other step as seen in the direction of movement of the web.
  • the downstream positioned process is setup with a fixed overspeed (for example 2%) and the equipment repeat rate (repeat length) of the two processes, namely the upstream step and the downstream step, differ by a fixed ratio adapted to and depending on the aforementioned overspeed. That is, the repeat lengths predetermined by the equipment of the two processes are chosen so that, under consideration of the overspeed, both applied structures are in register.
  • the adjustment of the step of applying the decorative structure and the step of applying the functional structure so as to phase the first pattern and the second pattern relative to each other along the entire longitudinal extension of the continuous web is performed by phase shifting by means of, for example, a gearbox or a servo drive.
  • the web elongation is controlled by an in-feed nip and an out-feed nip before and after the step of applying the first pattern and/or the step of applying the second pattern and relaxing the web after it leaves the out-feed nip.
  • two additional nip points before and after one of the two processes create a defined and adjustable web elongation in this process and, thus, enable controlling of the surface speed of the continuous web in the process.
  • the nip point drives are coupled to the first or second roll, respectively.
  • the web speed in these nip points is identical and the web passes the respective process without a change in tension or elongation. The web is relaxed after it leaves the out-feed nip.
  • a print design with 200 mm repeat lengths on the printing roll can be printed on an elongated web.
  • the 200 mm print design will shrink to about 190 mm on the web after relaxation.
  • the system can also be used to correct a basic mismatch between the printing repeat lengths and any other repeat lengths, for example, embossing, perforation, etc.
  • a typical range of adjustment for a tissue product will be 0% to 20%, preferably 0% to 10% and most preferred 0% to 5%.
  • a 0% to 5% range for a typical household towel will allow the adjustment of repeat lengths between 0 mm and 12 mm.
  • the surface speed of the roll in the respective step can be controlled or influenced indirectly, by controlling the surface speed of the continuous web via the web elongation in the respective step.
  • the method further comprises controlling of the speed ratio between the step of applying the first pattern and the step of applying the second pattern and the phasing between the step of applying the first pattern and the step of applying the second pattern by a feedback control of the position of the continuous web relative to a reference point.
  • a sensor e.g. a camera detects a reference mark, preferably printed on the scrap part of the continuous web, and feeds back the difference between the target distance and the sensed distance between two marks.
  • This signal can then be used to automatically correct the speed ratio of the drives of both processes.
  • the correct phasing between the two processes can be controlled by this feedback control. Suitable feedback controls are generally known to the person skilled in the art so that a detailed description of same here is unnecessary.
  • the method further comprises the step of repetitively perforating the continuous web transverse to its longitudinal extension and controlling the phasing between the perforating step and the step upstream of the perforating step, as seen in the direction of movement of the web, by means of the sensor, so as to phase perforations with the first pattern and/or the second pattern such as to have the same repetitive spatial relationship of the perforations relative to the first and/or the second pattern along the entire longitudinal extension of the continuous web.
  • This method step is necessary, for example, if a hygiene paper product is to be produced that, as an end product, is present in the form of a roll of a plurality of separable sheets.
  • a roll comprises a plurality of sheets separated by lines of weakness such as perforations.
  • the roll can have a total length of between 10 m and 20 m.
  • the perforation of the continuous web is phased in a controlled manner by a sensor signal as described above as part of the feedback control.
  • Perforating and cutting processes are rather uncritical in terms of speed, and are typically operated at an over-speed of 2% to 30% to achieve better sheer processes. Due to the speed flexibility, an automatically controlled phasing is sufficient to achieve a match of perforation to print and/or embossing.
  • the continuous web is printed, whereas in the step of applying the second pattern, the web is embossed.
  • printing imparts the decorative structure, namely the design
  • embossing imparts the functional structure, such as improving product thickness, absorbency, bulk softness, etc.
  • a functional coating may be applied to the web.
  • Functional coatings can be, for example, abrasive coatings to improve dry wiping capabilities of a towel.
  • functional coating spots can be applied to defined areas of the product surface, e.g. only the peaks or valleys of an embossed product.
  • An apparatus for manufacturing a hygiene paper product comprises means for feeding a continuous paper web, means for moving the continuous web in a direction along its longitudinal extension, a first unit for applying a first pattern and a repetitive decorative structure to the paper, the first unit having a first roll, a second unit for applying a second pattern in a repetitive functional structure to the paper web, the second unit having a second roll. So as to phase the first pattern with respect to the second pattern such that they have the same repetitive spacial relationship relative to each other along the entire longitudinal extension of the continuous web, the apparatus further comprises means for concurrently controlling the surface speed of the continuous web and phasing between the first roll and the second roll.
  • either the first unit or the second unit is located downstream of the other, as seen in the direction of movement of the continuous web, wherein both units are located close to each other.
  • the downstream unit has a fixed surface overspeed, wherein a repeat rate of the upstream unit to a repeat rate of the downstream unit differs by a fixed ratio depending on the fixed surface over-speed. That is, the repeat length is selected or adjusted so as to theoretically enable bringing into register of both patterns, taking into account the difference in surface speed resulting from the overspeed.
  • the apparatus further comprises means for phase shifting, wherein the means for phase shifting connects the drives of the upstream and the downstream units.
  • the means for phase shifting may be a gearbox or a servo drive.
  • the apparatus further comprises two additional nip points, namely an in-feed nip and an out-feed nip upstream and downstream of one of the first or the second unit, as seen in the direction of movement of the continuous web, wherein the web is relaxed after leaving the out-feed nip.
  • the nip points may be constituted by a driven S-wrap and the nip point drives may be coupled to the first or second roll, respectively.
  • the apparatus further comprises a feedback control of the position of the continuous web relative to a reference point so as to control the speed ratio between the first and second unit and/or the phasing therebetween.
  • the apparatus further comprises a perforation unit for repetitively perforating the continuous web transverse to its longitudinal extension.
  • the perforating unit is provided downstream of the first and/or second unit as seen in the direction of movement of the continuous web.
  • a sensor is provided upstream of the perforating unit.
  • the sensor may be part of the aforementioned feedback control, which detects a reference mark preferably printed on the scrap part of the paper web, and feeds back the difference between the target distance and the sensed distance between the two marks. The signal is then used to automatically control the phasing.
  • the first unit comprises a printing unit having a printing roll and the second unit comprises an embossing unit having an embossing roll.
  • the present invention further provides a product obtained by the aforementioned method or in the aforementioned apparatus.
  • the hygiene paper product of the present invention preferably has the form of a continuous web and comprises relative to the longitudinal web a first pattern with a repetitive decorative structure and a second pattern with a repetitive functional structure.
  • the first pattern and/or the second pattern are positioned in a repetitive and adjustable position along the longitudinal extension of the web. That is, the respective pattern is repetitively positioned at a defined location on the web relative to a reference on the web such as, e.g., the perforations or the respective other pattern.
  • the inventive hygiene paper product has preferably the form of a continuous web being present in the form of a roll and comprises a first pattern having a repetitive decorative structure relative to the longitudinal extension of the web and the second pattern having a repetitive functional structure relative to the longitudinal extension of the web.
  • the hygiene paper product is characterized in that the first pattern and the second pattern are registered or phased, respectively, with respect to each other such that they have the same repetitive spatial relationship relative to each other along the entire longitudinal extension of the continuous web.
  • the hygiene paper product comprises a plurality of sheets detachably formed by perforations repetitively extending transverse to the longitudinal extension of the web, the perforations being registered or phased with respect to the first pattern and/or the second pattern so as to have the same repetitive spatial relationship relative to the first and/or the second pattern along the entire longitudinal extension of the continuous web.
  • first and the second patterns may be stripes transverse to the longitudinal extension of the web, wherein the first pattern and the second pattern do not overlap.
  • the first pattern may surround the second pattern and vice versa.
  • the first pattern is substantially uniformly distributed over substantially all the surface of the hygiene paper product and leaves a free space occupied by the second pattern.
  • the perforations do not intersect the first pattern and/or the second pattern. If the perforations are also in register with the first and second patterns, it is possible to obtain a hygiene paper product in which each sheet of a plurality of sheets, being separable by perforations, have the same visual appearance.
  • the first pattern is a printed pattern and the second pattern is an embossed pattern.
  • the present invention provides a great flexibility with respect to the visual design of hygiene paper products. With the present invention, it is possible to match different treatments or patterns, so that at the same time a hygiene paper product can be obtained which has an improved visual appearance, still provides the typical desired product characteristics and properties and which can easily be manufactured.
  • Fig. 3 is a schematic view of an apparatus according to the present invention.
  • the apparatus comprises an unwinder unit 10 for feeding a continuous paper web to the respective step of manufacture.
  • a parent roll 11 is unwound and fed into the respective unit in the form of a continuous paper web 12.
  • the parent roll is a large roll of paper to be converted to multiple individual hygiene paper products in the form of sheets or rolls.
  • Different parent rolls have different properties which effect the transport of the sheet through the apparatus. For example, the amount of stretch in the sheet as it travels through the apparatus frequently varies greatly between parent rolls. As these properties vary, so does the registration of the first pattern with the second pattern and/or the perforation. However, with the apparatus according to the present invention, this problem can be avoided.
  • a continuous web is first transported to a printing unit 13. Ahead of the printing unit, i.e. upstream of the printing unit as seen in the direction of movement of the web through the apparatus, an in-feed nip 14 in the form of a S-wrap is located and constituted by two rolls 14a, 14b. Beyond the printing unit 13, i.e., downstream of the printing unit, an out-feed nip 15 in the form of an S-wrap is located and also has two rolls 15a and 15b.
  • the printing unit is located between the in-feed nip 14 and the out-feed nip 15 and comprises four printing cylinders 16, 17, 18 and 19 and one backing roll 20 for all four printing cylinders.
  • the printing unit 13 is a four colour printing unit and, thus, comprises the four printing cylinders.
  • the continuous web is transported from the unwinder unit 10 to the printing unit 13, that is, the continuous web 12 moves from the left to the right as seen in the drawing. Consequently, as seen in the direction of movement of the continuous web 12, the in-feed nip 14 is located upstream of the printing unit and the out-feed nip 15 is located downstream of the printing unit.
  • the embossing unit 21 comprises an embossing roll 22 and a respective backing roll 23.
  • a sensor 24, which is part of a feedback control (not shown) is located above one surface of the web.
  • the sensor 24 is located upstream of the embossing cylinder 22 as seen in the direction of movement of the web 12.
  • the sensor 24 is capable of detecting a reference mark printed on the paper web, preferably by the printing unit 13 and, more preferably, on a scrap part of the web 12, which is cut to form in a later step.
  • the feedback control calculates the difference between the target distance and the sensed distance between two reference marks on the paper web 12.
  • the speed ratio of the drive of the printing cylinders 16, 17, 18, 19 and the embossing cylinder 22 is adjusted, if required, to correct any deviations. Furthermore, the drives of the embossing cylinder 22 and the printing cylinder 16, 17, 18, 19 are connected via a gearbox or a master-slave servo drive.
  • the embossing unit 21 comprises a second embossing roll 25 and a second backing roll 26.
  • a second continuous web 27 may be fed to the embossing unit to be embossed and then laminated to the first continuous web 12 so as to enable the manufacture of a multi-ply paper product.
  • alternative arrangements of the embossing unit may be used and are well-known to the skilled person.
  • the paper web is transported to a perforating unit 28 comprising a perforating roll 29 and a backing roll 30.
  • An additional nip point 31, comprising two rolls 31a and 31b may be located upstream of the perforating unit 28.
  • the continuous web 12, or if two webs are laminated the multi-ply web 27 is rewound by a rewinder unit 32.
  • the end product can be provided in roll form such as for toilet paper rolls or a kitchen towel rolls.
  • a cutting unit could be provided instead of the perforation unit.
  • the end product has the form of a single sheet such as, for example, napkins.
  • FIG. 4 this schematically shows the arrangement of an in-feed nip 14 and an out-feed nip 15 enclosing only one printing nip 33.
  • the printing nip 33 is defined by a printing roll 33a and a backing roll 33b.
  • the drive of all three nips 14, 15 and 33 are coupled and the web speed in these nip points is identical so that the web passes the process without a change in its tension or elongation. After leaving the out-feed nip 15, the web is relaxed.
  • a print design having, for example, 200 mm repeat lengths on the printing cylinders can be printed on an elongated web.
  • the web is elongated between the in-feed nip and the out-feed nip and, after leaving the out-feed nip, it is again relaxed.
  • the 200 mm print design which is printed onto the so elongated web, will shrink to about 190 mm on the web after leaving the out-feed nip 15.
  • the system can also be used to correct a basic mismatch between printing repeat lengths and any other repeat lengths, such as in the preferred embodiment with embossing and/or perforating.
  • a typical range of adjustment for a tissue product will be between 0% and 20%.
  • a range of 0% to 5% for a typical household towel will allow the adjustment of a repeat length by between 0 mm and 12 mm.
  • the elongation of the web 12 is adjusted by the drives of the respective nip points.
  • the arrow 34 indicates the direction of movement of the web 12.
  • Fig. 5 one sheet of either a hygiene paper product in the form of a continuous web in roll form, or of a hygiene paper product being constituted by the sheet as such, is shown.
  • the sheet 1 comprises a functional embossed pattern 2 and decorative printed pattern 3.
  • the pattern 2 and the pattern 3 are in register, that is both patterns match each other or are phased relative to each other. Further, the sheet is separated by cutting at the separation line 4 to provide perforations. Consequently, the present invention enables to repetitively produce sheets that have an embossed pattern 2 and a printed pattern 3 which are phased relative to each other such that it is possible to produce a plurality of sheets having repetitively the same spatial relationship of patterns relative to each other.
  • the present invention enables to produce hygiene paper products in the form of a roll comprising a plurality of sheets being separated by perforations 4 transverse to the longitudinal extension of the web constituting the roll, wherein each sheet has the same spatial relationship between the embossed pattern 2 and the printed pattern 3 and wherein the perforations are made such that those patterns 2 and 3 repetitively have the same spatial relationship on the surface of a single sheet.
  • the printing and embossing processes are positioned close to each other.
  • the drives of the printing unit, as well as the embossing unit are connected by means of a phase shifting gearbox or electronically via master/slave servo drives.
  • the embossing process is set-up with a fixed over-speed of, for example, 2%. That is, the surface speed of the embossing roll and the backing roll 23 and 22 is set-up with fixed over-speed.
  • the equipment repeat pattern of the two processes that is, the repeat length of the printing process and the repeat length of the embossing process, differ by a fixed ratio adapted to the aforementioned over-speed. That is, the print repeat does not match the embossing repeat but both rates are adjusted with respect to the surface over-speed of the respective rolls. Further, the adjustment of the printing to the embossing pattern is performed by phase shifting via the gearbox or the servo drive.
  • the fixed speed ratio goes along with a fixed web tension, the latter of which is not adjustable.
  • a fixed web tension the latter of which is not adjustable.
  • different product specifications and raw materials, which are incorporated by means of the parent roll 11 require different web tensions for optimum product quality and trouble-free operation.
  • the fixed ratio also defines the repeat length difference between the printing and the embossing, as mentioned above. Nevertheless, any mistake in the repeat length will lead to "walking off"-patterns shown in Fig. 2.
  • further adjustment is achieved according to the present invention by two additional nip points 14 and 15 arranged before and after the printing process. As become apparent from Fig.
  • the continuous paper web is fed to the printing unit 13 and enters an in-feed nip 14, runs through printing nips defined by the printing cylinders 16, 17, 18 and 19 and the backing roll 20, and then leaves the printing unit 13 via the out-feed nip 15.
  • the web elongations can be controlled so as to adjust the repeat length of the printing and the embossing processes.
  • the repeat length of printing can be adjusted without adjusting the actual repeat length predetermined by the equipment, namely, the circumference of the printing rolls and the respective selection of the repeat lengths.
  • the print design with 200 mm lengths on the printing chlichés that is the repeat lengths predetermined by the equipment
  • the web elongation is adjusted by the drives of the nip points 14, 15 and 33, which are coupled.
  • a reference marks are printed at a predetermined spacing on the paper web.
  • a sensor 24 detects the reference marks and the feedback control compares a target spacing to a sensed distance between two reference marks. Based on this signal, the speed ratios of the drives of the printing unit and the embossing unit are automatically corrected to ensure the desired phasing between the two patterns.
  • the correct elongation of the web in printing and embossing as well as phasing between the printing and the embossing can be automatically corrected and controlled.
  • the perforation of the tissue web is phase-controlled by the aforementioned sensor signal.
  • Perforating and cutting processes are rather uncritical in terms of speed, wherein typical systems operate at an over-speed of 2% to 20% to achieve better sheer processing. Due to this speed flexibility, an automatically controlled phasing is sufficient to achieve a match of the perforation to the printing and/or embossing. That is, due to the signal received from the sensor and the feedback control, the speed of the perforating unit is merely adjusted so as to match the printing and/or the embossing.

Landscapes

  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Making Paper Articles (AREA)
  • Replacement Of Web Rolls (AREA)
  • Paper (AREA)
  • Sanitary Thin Papers (AREA)
EP03024997A 2003-10-30 2003-10-30 Verfahren zur Herstellung eines Hyginepapierprodukts, Vorrichtung zur Herstellung und das Hygienepapierprodukt Withdrawn EP1527898A1 (de)

Priority Applications (8)

Application Number Priority Date Filing Date Title
EP03024997A EP1527898A1 (de) 2003-10-30 2003-10-30 Verfahren zur Herstellung eines Hyginepapierprodukts, Vorrichtung zur Herstellung und das Hygienepapierprodukt
PCT/EP2004/009360 WO2005049326A1 (en) 2003-10-30 2004-08-20 Method of manufacturing a hygiene paper product, apparatus for such manufacture and hygiene paper product
CN2004800251697A CN1845825B (zh) 2003-10-30 2004-08-20 制造卫生纸产品的方法和设备
RU2006118709/12A RU2350473C2 (ru) 2003-10-30 2004-08-20 Способ изготовления гигиенического бумажного изделия, установка для такого изготовления и гигиеническое бумажное изделие
MXPA05012971A MXPA05012971A (es) 2003-10-30 2004-08-20 Metodo para la fabricacion de un producto de papel higienico, aparato para tal fabricacion, y el producto de papel higienico.
AU2004291216A AU2004291216B2 (en) 2003-10-30 2004-08-20 Method of manufacturing a hygiene paper product, apparatus for such manufacture and hygiene paper product
EP04741421.4A EP1677988B1 (de) 2003-10-30 2004-08-20 Verfahren zur herstellung eines hygienepapierprodukts, vorrichtung für solch eine herstellung und hygienepapierprodukt
BRPI0415656-0A BRPI0415656A (pt) 2003-10-30 2004-08-20 método para produzir um produto de papel higiênico, equipamento para tal produção e um produto de papel higiênico

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP03024997A EP1527898A1 (de) 2003-10-30 2003-10-30 Verfahren zur Herstellung eines Hyginepapierprodukts, Vorrichtung zur Herstellung und das Hygienepapierprodukt

Publications (1)

Publication Number Publication Date
EP1527898A1 true EP1527898A1 (de) 2005-05-04

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EP03024997A Withdrawn EP1527898A1 (de) 2003-10-30 2003-10-30 Verfahren zur Herstellung eines Hyginepapierprodukts, Vorrichtung zur Herstellung und das Hygienepapierprodukt
EP04741421.4A Expired - Lifetime EP1677988B1 (de) 2003-10-30 2004-08-20 Verfahren zur herstellung eines hygienepapierprodukts, vorrichtung für solch eine herstellung und hygienepapierprodukt

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Country Status (7)

Country Link
EP (2) EP1527898A1 (de)
CN (1) CN1845825B (de)
AU (1) AU2004291216B2 (de)
BR (1) BRPI0415656A (de)
MX (1) MXPA05012971A (de)
RU (1) RU2350473C2 (de)
WO (1) WO2005049326A1 (de)

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WO2007078363A1 (en) * 2005-12-15 2007-07-12 Kimberly-Clark Worldwide, Inc. Tissue sheet molded with elevated elements and methods of making the same
US7524404B2 (en) 2005-06-08 2009-04-28 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
CN101637365A (zh) * 2008-07-31 2010-02-03 大王制纸株式会社 卫生薄页纸及卫生薄页纸的制造方法
WO2010071543A1 (en) 2008-12-18 2010-06-24 Tetra Laval Holdings & Finance Sa Method of controlling the relative position between printed patterns and non-printed patterns on a web-shaped material and a system used in the method
US7785696B2 (en) 2005-06-08 2010-08-31 The Procter & Gamble Company Embossed product including discrete and linear embossments
US7887676B2 (en) 2005-06-08 2011-02-15 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
US8844437B2 (en) 2007-04-27 2014-09-30 Kimberly-Clark Worldwide, Inc. Process and system for aligning printed images with perforated sheets
EP2975177A1 (de) * 2014-07-17 2016-01-20 Sca Tissue France Saugfähige Blattproduktstreifen mit begrenzter Flüssigkeitsdurchbrucheigenschaft
WO2017055784A1 (en) * 2015-09-29 2017-04-06 British American Tobacco Mexico, S.A. De C.V. A web of tipping paper
WO2017136614A1 (en) * 2016-02-05 2017-08-10 The Procter & Gamble Company Methods of applying compositions to webs
US10195091B2 (en) 2016-03-11 2019-02-05 The Procter & Gamble Company Compositioned, textured nonwoven webs
US11730639B2 (en) 2018-08-03 2023-08-22 The Procter & Gamble Company Webs with compositions thereon
US11813148B2 (en) 2018-08-03 2023-11-14 The Procter And Gamble Company Webs with compositions applied thereto

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GB0809135D0 (en) * 2008-05-20 2008-06-25 British American Tobacco Co Apparatus and method for making a smoking article
CN101704316A (zh) * 2009-10-14 2010-05-12 姚福来 利用压力调节实现同步控制的方法
CN102189746A (zh) * 2011-04-29 2011-09-21 珠海三元铝材有限公司 一种金属卷材卷印装置及金属卷材卷印方法
CN107804084B (zh) * 2017-10-31 2020-01-17 常德金鹏印务有限公司 一种卷筒纸产品先压膜后印刷的印制方法

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US7524404B2 (en) 2005-06-08 2009-04-28 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
US7785696B2 (en) 2005-06-08 2010-08-31 The Procter & Gamble Company Embossed product including discrete and linear embossments
US7887676B2 (en) 2005-06-08 2011-02-15 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
US7918972B2 (en) 2005-06-08 2011-04-05 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
US8007640B2 (en) 2005-06-08 2011-08-30 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
US8083893B2 (en) 2005-06-08 2011-12-27 The Procter & Gamble Company Embossing process including discrete and linear embossing elements
WO2007078363A1 (en) * 2005-12-15 2007-07-12 Kimberly-Clark Worldwide, Inc. Tissue sheet molded with elevated elements and methods of making the same
AU2006333550B2 (en) * 2005-12-15 2011-05-26 Kimberly-Clark Worldwide, Inc. Tissue sheet molded with elevated elements and methods of making the same
US8844437B2 (en) 2007-04-27 2014-09-30 Kimberly-Clark Worldwide, Inc. Process and system for aligning printed images with perforated sheets
CN101637365A (zh) * 2008-07-31 2010-02-03 大王制纸株式会社 卫生薄页纸及卫生薄页纸的制造方法
CN101637365B (zh) * 2008-07-31 2014-01-29 大王制纸株式会社 卫生薄页纸及卫生薄页纸的制造方法
AU2009327615B2 (en) * 2008-12-18 2013-08-01 Tetra Laval Holdings & Finance Sa Method of controlling the relative position between printed patterns and non-printed patterns on a web-shaped material and a system used in the method
EP2379329A4 (de) * 2008-12-18 2012-07-11 Tetra Laval Holdings & Finance Verfahren zur steuerung der relativen position zwischen bedruckten mustern und nicht bedruckten mustern auf einem netzförmigen material sowie in diesem verfahren verwendetes system
EP2379329A1 (de) * 2008-12-18 2011-10-26 Tetra Laval Holdings & Finance S.A. Verfahren zur steuerung der relativen position zwischen bedruckten mustern und nicht bedruckten mustern auf einem netzförmigen material sowie in diesem verfahren verwendetes system
WO2010071543A1 (en) 2008-12-18 2010-06-24 Tetra Laval Holdings & Finance Sa Method of controlling the relative position between printed patterns and non-printed patterns on a web-shaped material and a system used in the method
EP2975177A1 (de) * 2014-07-17 2016-01-20 Sca Tissue France Saugfähige Blattproduktstreifen mit begrenzter Flüssigkeitsdurchbrucheigenschaft
JP2018532375A (ja) * 2015-09-29 2018-11-08 ブリティッシュ アメリカン タバコ メキシコ， エス．エー． ディーイー シー．ヴィー．Ｂｒｉｔｉｓｈ Ａｍｅｒｉｃａｎ Ｔｏｂａｃｃｏ Ｍｅｘｉｃｏ， Ｓ．Ａ． Ｄｅ Ｃ．Ｖ． チップペーパーウェブ
WO2017055784A1 (en) * 2015-09-29 2017-04-06 British American Tobacco Mexico, S.A. De C.V. A web of tipping paper
WO2017136614A1 (en) * 2016-02-05 2017-08-10 The Procter & Gamble Company Methods of applying compositions to webs
US10632736B2 (en) 2016-02-05 2020-04-28 The Procter & Gamble Company Systems and methods of applying compositions to webs
US10913261B2 (en) 2016-02-05 2021-02-09 The Procter & Gamble Company Systems and methods of applying compositions to webs
US11292242B2 (en) 2016-02-05 2022-04-05 The Procter & Gamble Company Systems and methods of applying compositions to webs
US11571884B2 (en) 2016-02-05 2023-02-07 The Procter & Gamble Company Systems and methods of applying compositions to webs
US10195091B2 (en) 2016-03-11 2019-02-05 The Procter & Gamble Company Compositioned, textured nonwoven webs
US11730639B2 (en) 2018-08-03 2023-08-22 The Procter & Gamble Company Webs with compositions thereon
US11813148B2 (en) 2018-08-03 2023-11-14 The Procter And Gamble Company Webs with compositions applied thereto

Also Published As

Publication number Publication date
RU2006118709A (ru) 2007-12-10
EP1677988A1 (de) 2006-07-12
WO2005049326A1 (en) 2005-06-02
AU2004291216A2 (en) 2005-06-02
BRPI0415656A (pt) 2006-12-19
RU2350473C2 (ru) 2009-03-27
AU2004291216A1 (en) 2005-06-02
MXPA05012971A (es) 2006-03-16
CN1845825B (zh) 2010-06-23
AU2004291216B2 (en) 2009-12-10
EP1677988B1 (de) 2014-12-03
CN1845825A (zh) 2006-10-11

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