WO2002020258A1 - Procede et appareil de production d'un carton a motifs - Google Patents

Procede et appareil de production d'un carton a motifs Download PDF

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Publication number
WO2002020258A1
WO2002020258A1 PCT/SE2001/001874 SE0101874W WO0220258A1 WO 2002020258 A1 WO2002020258 A1 WO 2002020258A1 SE 0101874 W SE0101874 W SE 0101874W WO 0220258 A1 WO0220258 A1 WO 0220258A1
Authority
WO
WIPO (PCT)
Prior art keywords
roll
web
press
fibrous web
imprinted
Prior art date
Application number
PCT/SE2001/001874
Other languages
English (en)
Inventor
Per Eiritz
Original Assignee
Valmet-Karlstad Aktiebolag
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
Priority claimed from SE0003105A external-priority patent/SE0003105L/xx
Application filed by Valmet-Karlstad Aktiebolag filed Critical Valmet-Karlstad Aktiebolag
Publication of WO2002020258A1 publication Critical patent/WO2002020258A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0209—Wet presses with extended press nip
    • D21F3/0218—Shoe presses
    • 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
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F11/00—Processes for making continuous lengths of paper, or of cardboard, or of wet web for fibre board production, on paper-making machines
    • D21F11/006—Making patterned paper
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F3/00—Press section of machines for making continuous webs of paper
    • D21F3/02—Wet presses
    • D21F3/0281—Wet presses in combination with a dryer roll
    • 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

Definitions

  • the present invention relates to a method of making a patterned board product, in particular a corrugated board product.
  • the method includes running a fibrous web through a heated imprinting nip comprising at least one roll provided with a surface that has raised and/or recessed portions that form a patterned surface on the roll such that, in the nip, a pattern is formed on at least one side of said fibrous web.
  • the invention also relates to an apparatus for perforaiing the method.
  • Corrugated board/corrugated paperboard has been known for a long time as a packaging and construction material. New applications and fields of use are still found in spite of the fact that the material has been known since the middle of the nineteenth century. In a global perspective, the use increases continuously. Above all, you can see an increased use of corrugated board/paperboard having comparatively small corrugations, so called mini-flute and micro-flute, respectively, with corrugations having a maximal height of about 1 mm. Also in other product segments there is an increased demand for corrugated board.
  • corrugated board has in principle been the same for many decades.
  • Ready-made board is used as starting material, which is conveyed through a special series of devices, see for instance US 5,894,681.
  • At least one corrugated layer, so called fluted paper is manufactured in said series of devices, which layer is brought together with at least one (single faced corrugated fiberboard), in most cases two surface layers (single wall corrugated fiberboard).
  • at least one corrugated layer so called fluted paper
  • several fluted papers are used, which are brought together between the facings in a manner known per se.
  • the corrugated layer/fluted paper is manufactured by means of rolls in the form of dented wheels, the teeth of which are engaging each other in such a way that the fiberboard layer, which is introduced between the teeth, will get a fluted shape.
  • the peaks are glue coated subsequent to the corrugation, generally by means of a smooth roll, against which the corrugated fiberboard layer is brought, whereafter a facing layer is pressed against the corrugated layer to adhere thereto. This can also be made on the one or the other side, and with several parallel corrugation layers, in order to obtain further strength.
  • the basic principle is, however, always the same one.
  • the corrugated fiberboard is conveyed into a heating device for final drying/setting. Thereafter, the corrugated fiberboard can be cut into suitable lengths before storing and further treatment.
  • a purpose of the present invention is to eliminate the above mentioned drawbacks, at least to some extent. This is achieved by means of a method of making a patterned board product that includes running a fibrous web through an imprinting press nip having at least one roll with a surface that has raised and/or recessed portions to form a patterned surface on the roll.
  • the patterned surface is preferably a corrugated surface.
  • At least the patterned surface of at least one roll is heated and the heated patterned surface is pressed into the fibrous web to form a reverse image of the pattern therein.
  • the web is supplied in a wet condition directly from a forming section of a boardmaking machine to the press nip.
  • the wet web is dewatered in the press nip during pressing of the heated patterned surface of the at least one roll into the web.
  • the web is dried to a desired dryness while the heated patterned surface of the at least one roll is maintained in contact with the imprinted pattern in the web, so as to achieve a patterned stiff board product.
  • the phrase "directly from a forming section of a boardmaking machine to the press nip" should not be understood as excluding the possibility of web treatment between the forming section and the imprinting press nip. Instead, the phrase should be understood as meaning that the web has not yet been finally dewatered and that it still retains a substantial part of its original water content from the forming section when it reaches the imprinting press nip.
  • a machine for making a patterned board product comprising a press having two press members that define an imprinting press nip. At least one of the press members is a roll with a surface that has raised and/or recessed portions to form a patterned surface on the roll.
  • the machine further comprises a heater for heating at least the patterned surface of the roll, and means for running a fibrous web through the imprinting press nip to press the heated patterned surface into the fibrous web to form to form a reverse image of the pattern therein,.
  • the machine additionally comprises a forming section of a boardmaking machine for wet forming the fibrous web, and a press section.
  • the press section includes, in addition to the press with the two press members and the imprinting press nip, the means for running the fibrous web through the imprinting press nip.
  • the means for running the fibrous web through the imprinting press nip is arranged to supply the wet fibrous web from the foraiing section directly to the imprinting press nip.
  • the imprinting press nip the fibrous web is dewatered by pressing and the heated patterned surface is pressed into the fibrous web.
  • the heater is arranged and adapted to heating the patterned surface to effect drying of the fibrous web to a desired dryness while the heated patterned surface of said roll is maintained in contact with the imprinted pattern in the web, so as to achieve a patterned stiff board product.
  • the means for running the fibrous web through the imprinting press nip may be a press felt.
  • Fig. 1 shows a preferred embodiment of the invention to manufacture embossed fiberboard
  • Fig. 2a shows portions, in cross section, of a product, which has been manufactured with a series of devices according to Fig. 1
  • Fig. 2b shows portions, in cross section of an other compound board product.
  • Fig. 3 shows an alternative series of devices for the manufacture of corrugated fiberboard according to the invention
  • Fig. 4 shows a product, which has been manufactured by means of a series of devices according to Fig. 1
  • Figs. 5 A, B show portions of a roll intended for the manufacture of the corrugated portion of the corrugated fiberboard according to the invention
  • Fig. 6 shows a conceivable design of a shoe press roll for the use in connection with the invention
  • FIG. 7 shows the pressure curve in a roll according to Fig. 6
  • Fig. 8 shows a first alternatively designed surface of a patterned roll according to the invention
  • Fig. 9 shows a second alternatively designed surface of a patterned roll according to the invention
  • Fig. 10 is a schematic drawing of a forming portion and of the press portion according to the invention.
  • a fibrous web w is shown, which runs from the right to the left in the figure. In the upstream part of the fibrous web (to the right in the figure), the dry solids content is about 30-40 %.
  • a shoe press unit 8, 10 with an extended nip 12 is shown.
  • the shoe press unit consists of an upper, heated roll 8, which on its surface is provided with raised and/or recessed portions, e.g. corrugations/grooves 8 A, which run transverse the direction of the device, i.e. parallel to the longitudinal direction of the roll.
  • shoe press roll 10 At the bottom there is an enclosed shoe press roll 10, which in a manner known per se is provided with a flexible jacket 10A, which in operation is pressed against the heated roll 8 by means of a shoe unit 11 (shown schematically). As is shown in Fig. 1, also the press felt 13 suitably runs through the nip 12 between the paper web w and the flexible jacket 10 A. Further, there is shown a glue coating unit 16 cooperating with a counter- roll 14.
  • the glue coating unit 16 consists of a roll 18 rotating in a longitudinal container device 20, to which glue is continuously supplied through a refill device 22.
  • the glue coating roll 18 is rotatably arranged in the glue bath in the container 20, so that glue can continuously be supplied to its surface during rotation.
  • the glue coating roll 18 is positioned so that its periphery contacts the peak of the corrugations on top of the fibrous web 2 after the passage through the nip 12.
  • a cover layer 4 generally a so called facing, is brought together with the glue coated, corrugated fiberboard 2 between two press rolls 24, 26.
  • the cover layer or facing 4 is fed over a guide roll 28.
  • a heating unit 30, which is arranged on the lower portion 2C of the two layers 2, 4, supplies heat for drying and setting of the layer, which have been glued together. Above the heating unit 30 there is a press unit consisting of a number of pressing roll units 36, 38, 40, which press against the upper layer 4 via a fabric 32.
  • the fabric 32 runs around said pressing roll units 36, 38, 40 and also at least one guide roll 34.
  • a fibrous web w is formed in a known manner in a forming section E of a boardmaking machine, see Fig. 10, and is supplied in a wet condition directly from the forming section to a press section P.
  • the web w may be dewatered by a suitable pressing unit to a dry solids content of about 30%.
  • the web w is then run through an imprinting press nip 12 having at least one roll 8 with a surface that has raised 8E and/or recessed 8B, 8C portions to form a patterned surface 8 A on the roll.
  • At least the patterned surface 8 A of the at least one roll 8 is heated and the heated patterned surface 8 A is pressed into the fibrous web w to form to form a reverse image of the pattern therein.
  • the imprinting nip 12 is preferably formed between a shoe press roll 10 with a flexible jacket 10A and a concave shoe 11 cooperating with the patterned roll 8 to form an extended press nip.
  • the wet web w is dewatered against the press felt 13 during the pressing of the heated patterned surface 8 A of the at least one roll 8 into the web w.
  • the web w is dried to a desired dryness, while the heated patterned surface 8 A of the at least one roll 8 is maintained in contact with the imprinted pattern 2B, 2E in the web w so that a patterned stiff board product is achieved.
  • the patterned surface 8 A on the roll 8 preferably comprises raised 8E and/or recessed 8B, 8C portions so as to imprint a pattern of grooves 2E and ridges 2B, respectively, in the fibrous web while the fibrous web is dewatered.
  • the grooves and ridges preferably extend in a cross machine direction.
  • the pattern 2B, 2E that is imprinted in the web will thus comprise corrugations 2B that are formed when the upper side of the fibrous web is pressed against corrugations/grooves 8A in the heated roll 8.
  • the fibrous web w may be shaped so as to have an imprinted side 2D and a substantially plain side 2C.
  • the fibrous web w When the fibrous web w reaches the nip, it should have a dry solids content of 20-45 %, preferably 25-40 % and more preferred 30-40 %.
  • an impulse technique is used, whereby the shoe press roll 10 for instance can be designed as is shown in Fig. 6.
  • the fibrous web is heated under high pressure in the nip to a temperature above evaporation, so that the obtained vapor carries liquid out of the web, whereby a very high dewatering can be achieved.
  • the dry solids content of the web 2 suitably exceeds 70 %, preferably exceeds 80 % and more preferred exceeds 90 %.
  • the glue coated, corrugated web 2 is then brought into contact with a top layer 4, which is provided against the glue coated peaks between rolls 24, 26. Then the glue 6 and the patterned or corrugated board are set/dried in the heating unit 30 as a felted pressing device 36, 38, 40 is pressing from above. As is indicated in Fig. 1, one or several additional drying devices 15 A, 15B can be provided directly after the exit from the nip 12 in order to increase the dry solids content further.
  • a great advantage with the embodiment according to the invention is that the heated counter-roll 8 due to its patterned surface 8 A provides a large area for heat transfer. As high web speeds in connection with the manufacture of fiberboard and paper are desirable today, this is an important advantage.
  • the increased exposure surface in the nip 12 permits a larger heat transfer than what is possible with a conventional smooth roll surface. Thus, besides the fact that patterns can be formed directly in the wet web, one gains the synergetic effect that the heat-transferring surface in the nip is increased drastically.
  • a compound product may be obtained by coating the raised portions 2B of the imprinted fibrous web 2 with glue, and then bonding an additional fibrous web 4, 2' to the imprinted side 2D to form a compound stiff board product.
  • the additional web may be a facing 4.
  • the additional web can also have an imprinted side 2D', and preferably the two webs are bonded to each other in such a way that the imprinted sides 2D, 2D' are facing each other to form a compound stiff board product having two substantially plain sides.
  • a patterned board layer 2 consisting of transverse ridges 2B and transverse grooves 2E, respectively, which are kept together by a continuous bottom layer 2A.
  • the ridges 2B are unbroken, so that they form continuous ridges across substantially the entire fibrous web.
  • the bottom surface 2C is substantially smooth, which is achieved by the felt 13 (and also the jacket) having a substantially smooth outer surface.
  • Fig. 2 a also shows that a facing 4 has been connected with the patterned layer 2 by means of glue applied on top of the ridges 2B.
  • the board produced in this way can be considered to correspond to a single wall corrugated fiberboard, which according to a traditional production method consists of two facings and an intermediate fluted layer.
  • the single layer 2, which is formed according to a method of the invention may be regarded to be equivalent to a single wall corrugated board.
  • a compound product can also be obtained by bonding two imprinted webs 2, 2' and a facing 4 to one another in such a way that the imprinted sides 2D, 2D' of the imprinted webs 2, 2' face in the same direction and form an intermediary board product having an exposed imprinted side 2D and a substantially plain side 2C, while the facing 4 covers the exposed imprinted side 2D to form a compound stiff board product.
  • a production unit which comprises two press units, the first unit, which is exactly like the one shown in Fig. 1, being shown with the same reference numbers as in Fig. 1.
  • the other unit which is mirror-inverted relative to Fig. 1, is shown with a '-reference.
  • the construction and function of the two units 8, 10, 16; 8', 10', 16' is generally the same as described in connection with Fig. 1 and will therefore not be explained in detail.
  • the left unit 8 1 , 10', 16' of the figure by means of its wet web w' provides a web 2' with an embossed upper side 2B', the pattern of which is formed by the surface 8A' of the heated roll 8 ⁇
  • the left unit 8 1 , 10', 16' of the figure by means of its wet web w' provides a web 2' with an embossed upper side 2B', the pattern of which is formed by the surface 8A' of the heated roll 8 ⁇
  • the left unit 8 1 , 10', 16' of the figure by means
  • the surfaces of the respective heated rolls 8, 8 1 are similar, thus producing two exactly identical layers 2, 2'.
  • the two layers are, however, offset in phase in relation to each other, so that after glueing 16, 16' and bonding in two parallel rolls 24, 26, they are arranged in such a way that the ridges 2B, 2B' of one layer are glued into the grooves 2E, 2E' of the other layer (see Fig. 4).
  • the roll units with the patterned rolls 8, 8' are arranged in such a way that the embossed surfaces 2D, 2D' of the two layers 2, 2' are directed towards each other when they are brought together. In this way a board product with good strength is manufactured.
  • Fig. 5 shows a schematic front view of a portion of a counter-roll 8.
  • the pattern of the surface 8A of the roll consists of ridges 8E and grooves 8B, respectively, which extend in parallel to the longitudinal direction of the roll.
  • the pattern which is shown in cross section (see Fig. 5B) can vary with respect to depth t, bottom width b and top width a, as is desired for the final product.
  • the bottom width b is smaller than the top width a, i.e. a>b.
  • the rule is, however, that b>a, for instance in order to manufacture a product according to Fig. 4.
  • Figs. 5 shows a schematic front view of a portion of a counter-roll 8.
  • the pattern of the surface 8A of the roll consists of ridges 8E and grooves 8B, respectively, which extend in parallel to the longitudinal direction of the roll.
  • the pattern which is shown in cross section (see Fig. 5B)
  • the pattern which is shown in cross section (
  • the distance between ridges and grooves, respectively, is made different depending on whether a product according to Fig. 2 or Fig. 4 shall be manufactured.
  • the distance between the grooves 8B in the roll can thus be made larger compared to a product according to Fig. 2, but a final product with comparable strength properties is obtained.
  • FIG. 6 a conceivable embodiment of a shoe press unit 10, 8 according to the invention is shown in cross section, wherein the principles for impulse technique are utilized.
  • An enclosed shoe press 10 is shown co-operating with a patterned counter-roll 8, so that a long nip 12 is formed therebetween.
  • the fibrous web w and a press felt 13 move through the nip 12.
  • the shoe press 10 comprises a support beam 42A, 42B, 42C in the form of an I-beam consisting of a waist 42A and a lower T-piece 42B and an upper T- piece 42C.
  • In the upper surface 44 of the upper T-piece 42C there is a recess 46.
  • the shoe 11 In the recess 46 there is a lower pressing device 48 and a shoe 11, the shoe 11 being fixed on top of the lower pressing device 48.
  • the shoe 11 is provided with an outwardly facing, concave surface 11A.
  • This concave surface 11 A co-operates with a flexible jacket 10A, which is attached to end walls 52 and which is sealingly surrounding the shoe press.
  • a counter-roll 8 Above the shoe press roll 10 and cooperating with the same there is a counter-roll 8, the surface of which is patterned and manufactured of a material with good thermal conductivity, suitably of steel.
  • the counter-roll 8 is provided with a heating device 58, which in a suitable manner, for instance radiation and/or flames, is heating the outer surface 8A of the counter-roll 8.
  • the heating device 58 extends along the entire width of the roll 8 but surrounds only a minor part of its periphery and is arranged somewhere in the area of its downward side of the roll.
  • the roll 8 can suitably also be heated from inside,
  • the pressing device 48 for the shoe 11 is a single row (but also a known twin row pressing system can be used). It has been suggested that, for impulse drying, a reversed pressure curve should be aimed at, i.e. a higher pressure is created across the fibrous web near its entry into the shoe press than at its exit. In case it is deemed suitable to utilize a reversed pressure curve, such one could be obtained for instance by a single-row pressing device according to Fig. 6 by placing the press plane 50 eccentrically in relation to the center C of the concave edge line 11 A of the shoe, so that a so called tilting of the shoe is obtained.
  • FI and F2, respectively, are Active forces (in exchange of the single-row real force) which act in an end portion each of the shoe according to Fig. 6, wherein FI indicates the force at the end where the paper web is entering the shoe and F2 thus indicates the force at the exit.
  • the press plane 50 is defined by the axis of rotation 54 of the counter-roll and the center axis 56 of the I-beam of the shoe press roll.
  • the center 56 of the beam is displaced along a circular arc 58 in relation to the rotation center 51 of the end walls and that the center of said circular arc 58 is arranged in or in the vicinity of the rotation center 54 of the counter-roll 8.
  • Figs. 6 and 7 there is shown a conceivable device for impulse drying, which utilizes an extended nip with a reversed pressure curve. It produces a reversed pressure curve, which brings about that the fibrous web w, at its entry into the nip 12, is exposed to an initially high pressure while it is effectively heated by the hot embossed surface 8A of the counter-roll. In this way, a very rapid heating of the liquid content in the fibrous web is achieved, which liquid is partly evaporated. The vapor thus obtained moves out of the fibrous web against the press felt 13 carrying with it remaining liquid, whereby a very efficient dewatering is achieved.
  • Fig. 8 there is shown a first alternatively design of a pattern in the surface 8 A of the counter-roll, the pattern being square and formed by means of intersecting recesses 8B, preferably N- or U-shaped, which are placed helically in the surface of the roll 8, suitably by milling.
  • Fig. 9 there is shown an patterned surface consisting of circular recesses 8C, which are symmetrically arranged in the surface 8 A of the roll.
  • the circular recesses have in cross section suitably the shape of a truncated cone with a flat bottom 8D and inclined side surfaces 8E.
  • a conceivable fo ⁇ ning section F and a conceivable press section P according to the invention are shown schematically, the shoe press 10 with the embossed counter- roll 8 being included as a last unit in the press section.
  • the machine according to the invention comprises a press having two press members 8, 10 that define an imprinting press nip 12. At least one of the press members is a roll 8 with a surface that has raised 8E and/or recessed 8B, 8C portions to form a patterned surface 8A on the roll.
  • the machine has a heater 58 for heating at least the patterned surface 8 A of the roll 8, and means 13 for running a fibrous web w through the imprinting press nip 12 to press the heated patterned surface 8A into the fibrous web w to form to form a reverse image of the pattern therein.
  • the means 13 for running a fibrous web through the nip may be a felt 13.
  • the machine further comprises a forming section F of a boardmaking machine for wet forming the fibrous web w and a press section P.
  • the press section includes, in addition to said press with the two press members 8, 10 and the imprinting press nip 12, the means 13 for running the fibrous web w through the imprinting press nip 12.
  • the means 13 are arranged to supply the wet fibrous web w from the forming section F directly to the press nip for dewatering the fibrous web w by pressing, and for pressing the heated patterned surface 8A into the fibrous web w.
  • the heater 58 is arranged to heat the patterned surface 8Ato effect drying of the fibrous web w to a desired dryness while the heated patterned surface 8A of said roll 8 is maintained in contact with the imprinted pattern 2B, 2E in the web w, so as to achieve a patterned stiff board product.
  • the pattern in said roll 8 may have a depth t of 0.5 to 5 mm, preferably 0.5 to 3 mm, more preferred 0.7 to 2 mm.
  • the pattern in the roll 8 comprises grooves 8B, which preferably are substantially N- or U-shaped. If the pattern comprises grooves, the grooves 8B should preferably run substantially parallel to the longitudinal direction of the roll 8. It is also preferable that the grooves 8B are substantially continuous from one end of the roll 8 to the other.
  • the grooves 8B of said roll 8 have a bottom width a, which is smaller than the distance b between two adjacent grooves 8B at the bottom of the grooves, so that b>a.
  • the pattern in the patterned roll 8 may comprise rotation symmetrical recesses 8D, 8E, preferably in the shape of truncated cones.
  • the press section is followed by a bonding section 16, 24, 26, 30, 32, 34, 36, 38, 40 for bonding another web 4, 2' to said imprinted web 2.
  • the bonding section may be preceded by a drying unit 15 A.
  • the most important thing is that sufficient dewatering and forming, respectively, is obtained in the nip, which in some applications (among other things depending on the dryness at entry, the length of the nip, the size of the surface transferring heat in the nip, temperature) can possibly be achieved by means of an extended nip with "conventional" pressure profile. Further, it is realized that the invention is not limited to any special type of forming section F but in principle any forming section intended for fiberboard may be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)

Abstract

La présente invention concerne un procédé et un appareil permettant de produire un produit carton à motifs. Une bande fibreuse (w) humide est cédée directement d'une section de formation d'une machine à carton à une ligne de contact d'impression (12) entre deux rouleaux. Au moins un rouleau (8) a une surface pourvue de protubérances (8E) et/ou de creux (8B, 8C) et destinée à constituer une surface à motifs (8A) sur le rouleau. Un chauffage (58) permet de chauffer au moins la surface à motifs (8A) du rouleau (8). La bande humide (w) est égouttée dans la ligne de contact (12) lorsque la surface à motifs chauffée (8A) du rouleau (8) est pressée sur la bande (w) pour y former une image inverse du motif. La bande (w) est séchée à un degré de séchage souhaité, tandis que la surface à motifs chauffée (8A) du rouleau (8) est maintenue en contact avec le motif imprimé (2B, 2E) dans la bande (w) de manière à obtenir un produit carton rigide à motifs, lequel peut avoir une face imprimée et une face unie. Dans une section de collage consécutive, une bande faisant face (4) ou une autre bande imprimée (2') peut être collée à la bande imprimée produite (2).
PCT/SE2001/001874 2000-09-04 2001-09-04 Procede et appareil de production d'un carton a motifs WO2002020258A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE0003105A SE0003105L (sv) 2000-09-04 2000-09-04 Metod och maskin för framställning av korrugerad kartong
SE0003105-4 2000-09-04
US23998600P 2000-10-13 2000-10-13
US60/239,986 2000-10-13

Publications (1)

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WO2002020258A1 true WO2002020258A1 (fr) 2002-03-14

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PCT/SE2001/001874 WO2002020258A1 (fr) 2000-09-04 2001-09-04 Procede et appareil de production d'un carton a motifs

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2602387A1 (fr) * 2011-12-07 2013-06-12 Metso Paper Sweden AB Machine fabrication de papier, rouleau pinceur élargie et procédé pour la production de papier de soie
CN103358598A (zh) * 2013-07-20 2013-10-23 李涛 新型无机纤维纸成型瓦楞机
CN105500777A (zh) * 2016-02-03 2016-04-20 滁州卷烟材料厂 一种用于瓦楞纸板冷却的辅助机构
CN108501454A (zh) * 2018-04-24 2018-09-07 温岭市森林包装有限公司 一种多层瓦楞板生产线及其生产工艺
CN111016299A (zh) * 2019-11-27 2020-04-17 湖北京山轻工机械股份有限公司 一种瓦楞纸板生产线智能管理***

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US4645484A (en) * 1984-11-05 1987-02-24 Tetra Pak International Ab Method for thinning regions of packing material to facilitate package assemblage
WO1993023614A1 (fr) * 1992-05-12 1993-11-25 Valmet-Karlstad Ab Presse a patin
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CN103358598A (zh) * 2013-07-20 2013-10-23 李涛 新型无机纤维纸成型瓦楞机
CN105500777A (zh) * 2016-02-03 2016-04-20 滁州卷烟材料厂 一种用于瓦楞纸板冷却的辅助机构
CN108501454A (zh) * 2018-04-24 2018-09-07 温岭市森林包装有限公司 一种多层瓦楞板生产线及其生产工艺
CN111016299A (zh) * 2019-11-27 2020-04-17 湖北京山轻工机械股份有限公司 一种瓦楞纸板生产线智能管理***
CN111016299B (zh) * 2019-11-27 2021-10-26 湖北京山轻工机械股份有限公司 一种瓦楞纸板生产线智能管理***

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