EP0901898B1 - Appareil ainsi que procédé pour la fabrication de carton ondulé - Google Patents
Appareil ainsi que procédé pour la fabrication de carton ondulé Download PDFInfo
- Publication number
- EP0901898B1 EP0901898B1 EP98117240A EP98117240A EP0901898B1 EP 0901898 B1 EP0901898 B1 EP 0901898B1 EP 98117240 A EP98117240 A EP 98117240A EP 98117240 A EP98117240 A EP 98117240A EP 0901898 B1 EP0901898 B1 EP 0901898B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- profile
- fluted roller
- curvature
- roller
- fluted
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
- B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
- B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
- B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
- B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
- B31F1/2863—Corrugating cylinders; Supporting or positioning means therefor; Drives therefor
Definitions
- An apparatus and method for manufacturing corrugated cardboard is provided.
- Devices of this kind are produced with fluted rolls of shapes different, the profile being determined by the distance and the height of the teeth.
- the paper strip is compressed under pressure and influence of heat between the profiles of the co-operating grooved rollers and then glued with a smooth covering strip. Usually this is done also under influence of heat and pressure by means of a roller support or compression roller.
- the embossing process itself takes place between the fluted tops or profile tops of a grooved roller and the grooved base surfaces or respective profile valleys of the other grooved roller. Usually the sides do not participate in the embossing process. In constructions like this the difference between the radii of profile vertices and cooperating profile valleys play an important role.
- the contact between the profile vertices of the second grooved roller and the essentially cylindrical surface of the backing roller takes place in the slot support, i.e. in the contact area between the second roller grooved and the support roller.
- the distance between the axes of the two rollers defined by the contact of the grooved roller and the roller support constantly varies during the rotation of the rollers between a value maximum, when a profile vertex is located near a link plane containing the axes of the rollers, and a minimum value, when a valley in profile of the second grooved roller is located in the connection plane containing the axes of the rollers.
- curvature and in particular the curvature apex of the profile tops of the second grooved roller is a factor essential which influences paper damage on the side of the roll support of the smooth strip.
- the increase in the spread creates an increased risk of vibration excitation, because the deviation is also responsible for variations in the distance between the axes of the second grooved roller and the backing roller, because of a simple geometric reason: a gap increased causes increased variations in the radial distance between the axes of the second grooved roller and the support roller.
- US 5,419,796 discloses an apparatus for manufacturing corrugated cardboard. he has a first pair of fluted rollers and a second pair of fluted rollers which forms a support slot with a support roller.
- the first pair of fluted rollers consists of a roller at the top and a roller at the bottom, whose profile vertices and profile valleys cooperate for the wavy deformation of a continuous strip.
- the summits of profile of the grooved roller at the top are essentially smaller than the intermediate profile valleys.
- the vertices in profile are larger than the profile valleys that lie between them.
- the profile valley areas of the two fluted rollers have no influence on the wavy deformation of the continuous strip and, therefore, are not suitable for areas of profile vertices that mesh.
- This realization of the two fluted rollers has for as a result an irregular walk of the device, which has negative effects on the corrugated cardboard to be manufactured.
- the object of the invention is to arrange an apparatus for the production of cardboard. wavy so that the vibration excitation is reduced and the risk marking on the corresponding composite strip as well as damage fiber is reduced. In addition, the risk of mutual engagement, i.e. the risk of catching the cooperating teeth of the two rollers fluted is to be avoided.
- the composite strip produced in an apparatus according to the invention can be single-sided corrugated board to use as it is, for example to wrap cylindrical articles.
- compound tape can also be a product preparation for two-sided or multi-layer corrugated cardboard.
- corrugated cardboard notably comprises compound strips, which are manufactured using simple strips containing fibers and especially cellulose fibers.
- the band composed consists of other materials, for example strips of material synthetic, which can in principle be machined for the production of strips wavy compound single sided.
- the invention is based on the idea, that an increased vibration excitation and increased charges appear mainly only where the profile ribs of the second grooved roller are in contact under pressure with the backing roller, the corrugated strip and the smooth strip being interspersed.
- crowns more strongly curved of the corrugated strip are formed. These peaks more strongly curved corrugated tape have no disadvantage for the product respective. Even if the corresponding compound tape is later machined from double-sided corrugated cardboard (Doubleface), the crowns more strongly curved corrugated tape are glued to a smooth strip of paper in an essentially flat junction line, where no vibration can not appear and where thus the influence of the vertex radius is limited.
- the two fluted rollers are arranged with an identical distance, that is, they have the same distance between successive apices of profile peaks and succeeding apexes of profile valleys.
- the invention relates to a method for manufacturing of corrugated cardboard.
- the difference between the radius of curvature of the valleys of profile of the second grooved roller and the radius of curvature of the tops of profile of the first grooved roller is approximately or preferably exactly equal to the difference between the radius of curvature of the valleys of profile of the first grooved roller and the radius of curvature of the tops of profile of the second grooved roller.
- a first smooth strip is glued against the peaks of the corrugated strip still in contact with the second grooved roller in a second roller slot between the second grooved roller and a support roller.
- the first and second peaks have at least approximately circular cylindrical curvature in the apex area, and that of a larger radius of curvature in the area apex of the first wave crowns and a radius of curvature more small in the apex area of the second crowns.
- the connecting flanks of the corrugated strip between the first and second successive and second and first wave crowns successive crowns can be formed essentially by straight line and essentially without pressure.
- a second smooth strip can be stuck to the apices of the second wavy peaks. It is true that these apex have a greater curvature or, in other words, a radius of curvature smaller.
- the appearance of the problems of excitation of vibrations and the risk of scarring is limited due to the attachment of the second smooth strip.
- Corrugated cardboard can be produced according to the process described above, comprising a wavy band with first and second peaks of successive waves indicating opposite directions relative to the plane of the strip, and a first smooth strip in contact with the first tops of ripple and stuck to the apices, the first peaks of ripple having a smaller curvature than that of the second crowns.
- the first wave crowns and the second wave peaks may have a circle arc curvature at least in the apex area respective, the radius of curvature of the first crowns of ripple being greater than the radius of curvature of the second peaks.
- the connecting flanks of the corrugated strip can extend essentially in a straight line between a first and a second respective wave crown.
- the connecting flanks of the corrugated strip can be essentially without embossing between first and second crown respective, so that their rigidity is not affected.
- Successive connecting flanks of the corrugated strip can form essentially identical angles with the plane of the wavy strip between a first wave crown and a respective second wave peak and between a second crown of ripple and a first crown of the wavy strip, respectively.
- a second smooth strip can be in contact with and glued to the apexes of the second wavy peaks.
- the invention differs from all these objections essentially in that depending on the objections, essentially symmetrical profiles of the strip wavy are produced, while according to the invention, the first crowns corrugation of the final profiles of the corrugated strip have more curvature small and second wavy peaks have greater curvature or in other words: the peaks of undulation projecting from the plane of the corrugated strip in one direction have a different curvature than that of the tops corrugation projecting from the plane of the corrugated strip in the other direction.
- a frame is designated by 10; it is placed on a machine foundation 12.
- the frame houses a first grooved roller 1, a second roller grooved 2 and a support roller 4.
- the first grooved roller 1 is supported against the second grooved roller 2 and in addition the support roller 4 is pressed against the second canned roller 2 by means of support.
- the first and second grooved roll 1, 2 together form a slot ripple 3; the support roller 4 and the second grooved roller 2 form together a support slot 5.
- a continuous strip 16 short to the first grooved roller 1 by a deflection pulley 18 and along from the first grooved roller 1 to the corrugated slot 3. After its passage through the corrugated slot 3 the continuous strip 16, first of all smooth, is deformed into a wavy strip 20. Supported on the second roller grooved 2, this corrugated strip 20 runs in the direction of the support slot 5 which remains to be described in detail.
- a smooth strip 24 short by a deflection roller 26 and by clamping means 28 up to the support roller 4 and supported thereon in the support slot 5. In the support slot 5, the corrugated strip 20 is joined with the smooth strip 24.
- the deformation of the continuous strip 16 into a corrugated strip 20 is carried out by moistening the continuous strip 16 first smooth before entering in the corrugated slot 3 by a humidification device 30 schematically indicated and by heating it, for example by the pulley of bypass 18 heated by steam.
- the continuous strip thus moistened and then passes through the corrugated slot 3 formed by the rollers fluted 1, 2 heated to around 180 ° C.
- the corrugated strip 20 After passing through the corrugated slot 3, the corrugated strip 20 meanwhile born from the strip continuous 16 is so stabilized in its wavy shape that it crosses the distance to the support slot 5 supported on the grooved roller 2.
- the contact between the corrugated strip 20 and the grooved roller 2 can be improved pressing the corrugated strip 20 against the outside face of the roller grooved 2 by an external overpressure in an overpressure chamber not shown or causing a vacuum inside the roller grooved 2, which is for example applied by grooves circumferential with the profile valleys of the grooved roller 2, so that the corrugated strip 20 is pressed against the circumferential profile of the grooved roller 2 by this depression under the simultaneous influence of the atmospheric pressure on the outer radial side of the corrugated strip 20.
- Fig. 1 also shows a bonding device 32, whereby glue is applied to the outer radial side of the wavy strip 20, especially on the crowns radially indicating outside.
- the corrugated strip 20 carrying the adhesive and the smooth strip 24 enter in the support slot 5 together, to be pressed against one another, this support representing a first step of bonding.
- the compound band 34, formed by the band corrugated 20 and the smooth strip 24 then runs through deflections 36, 38 in a transport device 40 which places the composite strip (cardboard corrugated single side) in loops on a longitudinal transport device 44, as illustrated in 46.
- the profile vertices PS1 and PS2 and the profile valleys PT1 and PT2 extend essentially parallel to the axes of the rollers, but they can also be tilted relative to the latter.
- Fig. 2 the engagement conditions between the first grooved roller 1 and the second grooved roller 2 are shown in detail in linearized or unrolled representation.
- the grooved roller 1 has PS1 profile vertices and PT1 profile valleys as well as PF1 flanks linking these.
- Grooved roller 2 has profile tops PS2 and PT2 profile valleys as well as PF2 profile flanks linking these last.
- the construction is arranged so that the PS1 profile vertices have a circular cylindrical curvature with a radius of curvature RS1, the vertices of profile PS2 have a cylindrical curvature circular with a radius of curvature RS2, the valleys of profile PT1 have a circular cylindrical curvature with a radius of curvature RT1, the valleys of profile PT2 have a circular cylindrical curvature with a radius of RT2 curvature and that the side flanks PF1 and PF2 are each formed by tangents to neighboring circular cylindrical curvatures.
- the line in dashes is obtained by approximating the profile of the first grooved roller 1 to the profile of the second grooved roller 2.
- the distance between PF2 and PF1 ' corresponds approximately to the thickness of the paper of the corrugated strip 20, which is obtained by compression of the continuous strip 16 into a corrugated strip 20 in the apex areas of the corrugated slot 3, as shown in Fig. 1.
- roller diameters grooved 1 and 2 can be identical or different.
- Fig. 3 we recognize a PS2 profile top of the grooved roller 2 in meshing with a cylindrical circumferential face U4 of the roller support 4 in linearized or unrolled representation.
- the smooth strip 24 is pressed against the corrugated strip 20 between the top of the PS2 profile of the grooved roller 2 and the circumferential face of the support roller 4, namely against a layer of glue 48 having been applied to the tops corrugation 50 of the corrugated strip 20 by the bonding device 32 according to Fig. 1.
- the relatively strong curved peaks 52 are supported by a flat side of another flat strip not shown here, if a corrugated board double sided is formed later.
- Machine operation is quieter due to pressure reduced surface and weaker knocks resulting between rollers 2 and 4.
- the take-in factor remains practically equal to that of a corresponding symmetrical profile (the take-in factor is defined as the ratio of paper length tucked in with that of the corrugated paper, i.e. the length of the strip continues to that of the corrugated cardboard obtained).
- the take-in factor is defined as the ratio of paper length tucked in with that of the corrugated paper, i.e. the length of the strip continues to that of the corrugated cardboard obtained).
- the flank angles ⁇ and ⁇ according to Fig. 2 can be maintained approximately equal to the angles of the sides with symmetrical profiles conventional.
- the profile peaks PS1, PS2 and the valleys of profile PT1, PT2 cooperate for the wavy deformation, or in other words: that the deformation of the profile is obtained by subjecting the continuous strip 16 to the influence of the pressure between a top of profile PS2 of the second grooved roller 2 or lower grooved roller 2 and a profile valley PT1 of the first grooved roller 1 or upper grooved roller 1, or by subject to the influence of pressure between the PS1 profile vertices of the first grooved roller 1 or upper grooved roller 1 and the valleys of PT2 profile of the second grooved roller or lower grooved roller, respectively, as is evident from FIG. 2.
- angle ⁇ also decreases.
- a decrease in angle ⁇ means an additional change in the factor of re-entry in the sense of a reduction in paper consumption.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Description
- Fig. 1
- montre une vue d'ensemble d'un appareil selon l'invention pour la fabrication de carton ondulé simple face;
- Fig. 2
- montre les conditions d'engrènement entre les deux rouleaux cannelés d'un appareil selon l'invention et
- Fig. 3
- montre les conditions d'engrènement entre les deuxièmes rouleaux cannelés et le rouleau d'appui d'un appareil selon l'invention.
Claims (6)
- Appareil pour la fabrication de carton ondulé, comportanta) un premier rouleau cannclé (1) et un deuxième rouleau cannelé (2) formant ensemble une fente à ondulation (3),b) un rouleau d'appui (4) formant une fente d'appui (5) avec le deuxième rouleau cannelé (2),c) des moyens d'admission (18) pour admettre une bande continue (16) à la fente à ondulation (3), dans laquelle la bande continue (16) est déformée en bande ondulée (20),d) des moyens d'admission (26,28) pour admettre une bande lisse (24) à la fente d'appui (5), dans laquelle la bande lisse (24) est appuyée à la bande ondulée (20) par l'entremise de moyens adhésifs, ete) des moyens de transport (36,38,40) pour transporter la bande composée (34) formée par le rapprochement de la bande ondulée (20) et la bande lisse (24),f) chacun des deux rouleaux cannelés (1,2) ayant sur sa face extérieure un profil cannelé avec des sommets de profil (PS1 ,PS2) et des vallées de profil (PT1,PT2) coopérant pour la déformation ondulée,i) des sommets de profil (PS1 ,PS2) et des vallées de profil (PT1, PT2) succédants de chaque rouleau cannelé (1,2) étant liés par des flancs de profil (PF1, PF2)ii) les sommets de profil (PS 1, PS2) de chaque rouleau cannelé (1,2) ayant en outre une courbure plus forte que celle des vallées de profil (PT2, PT1) de l'autre rouleau cannelé coopérant avec eux pour la déformation ondulée,iii) les sommets de profil (PS1) du premier rouleau cannelé (1) ayant une courbure plus forte que celle des sommets de profil (PS2) du deuxième rouleau cannelé (2),iv) les vallées de profil (PT1) du premier rouleau cannelé (1) ayant une courbure moins forte que celle des vallées de profil (PT2) du deuxième rouleau cannelé (2),v) les sommets de profil (PS1,PS2) des deux rouleaux cannelés (1,2) étant courbés en arc de cercle et les sommets de profil (PS1) du premier rouleau cannelé (1) ayant un rayon de courbure (RS1) plus petit que celui des sommets de profil (PS2) du deuxième rouleau cannelé (2),vi) les vallées de profil (PT1 ,PT2) des deux rouleaux cannelés (1,2) étant courbées en arc de cercle et les vallées de profil (PT1) du premier rouleau cannelé (1) ayant un rayon de courbure (RT1) plus grand que celui des vallées de profil (PT2) du deuxième rouleau cannelé (2),vii) la différence entre le rayon de courbure (RT2) des vallées de profil (PT2) du deuxième rouleau cannelé (2) et le rayon de courbure (RS1) des sommets de profil (PS1) du premier rouleau cannelé (1) étant environ ou de préférence exactement égale à la différence entre le rayon de courbure (RT1) des vallées de profil (PT1) du premier rouleau cannelé (1) et le rayon de courbure (RS2) des sommets de profil (PS2) du deuxième rouleau cannelé (2).
- Appareil selon l'une quelconque des revendications 1,
caractérisé en ce que
les deux rouleaux cannelés (1,2) ont un écart identique, c'est-à-dire la même distance entre des apex succédants des sommets de profil et des apex succédants des vallées de profil. - Procédé pour la fabrication de carton ondulé, notamment en utilisant un appareil selon l'une quelconque des revendications 1 ou 2,a) lors duquel une bande continue (16) est passée à travers une première fente de rouleau (3) entre deux rouleaux cannelés (1,2) coopérants, à savoir un premier rouleau cannelé (1) et un deuxième rouleau cannelé (2), et est déformée en bande ondulée (20) avec des premières et des deuxièmes cimes d'ondulation succédantes (50 resp. 52) indiquant des directions opposées, en formant, lors de ce passage, une première cime d'ondulation (50) entre chaque vallée de profil (PT1) du premier rouleau cannelé (1) et un sommet de profil (PS2) respectif du deuxième rouleau cannelé (2), en formant ensuite une deuxième cime d'ondulation (52) entre un sommet de profil (PS1) du premier rouleau cannelé (1) et une vallée de profil (PT2) du deuxième rouleau cannelé (2), en formant ensuite de nouveau une première cime d'ondulation (50) entre une vallée de profil (PT1) du premier rouleau cannelé (1) et un sommet de profil (PS2) du deuxième rouleau cannelé (2) etc.,b) les sommets de profil (PS1,PS2) des deux rouleaux cannelés (1,2) étant courbés en arc de cercle et les sommets de profil (PS1) du premier rouleau cannelé (1) ayant un rayon de courbure (RS1) plus petit que celui des sommets de profil (PS2) du deuxième rouleau cannelé (2),c) les vallées de profil (PT1 ,PT2) des deux rouleaux cannelés (1,2) étant courbées en arc de cercle et les vallées de profil (PT1) du premier rouleau cannelé (1) ayant un rayon de courbure (RT1) plus grand que celui des vallées de profil (PT2) du deuxième rouleau cannelé (2),d) les premières cimes d'ondulation (50) sont formées d'une courbure plus petite entre les vallées de profil (PT1) du premier rouleau cannelé (1) et les sommets de profil (PS2) du deuxième rouleau cannelé (2) et les deuxièmes cimes d'ondulation (52) sont formées d'une courbure plus grande entre les sommets de profil (PS1) du premier rouleau cannelé (1) et les vallées de profil (PT2) du deuxième rouleau cannelé (2),e) la différence entre le rayon de courbure (RT2) des vallées de profil (PT2) du deuxième rouleau cannelé (2) et le rayon de courbure (RS1) des sommets de profil (PS1) du premier rouleau cannelé (1) étant environ ou de préférence exactement égale à la différence entre le rayon de courbure (RT1) des vallées de profil (PT1) du premier rouleau cannelé (1) et le rayon de courbure (RS2) des sommets de profil (PS2) du deuxième rouleau cannelé (2), etf) une première bande lisse (24) étant collée contre les premières cimes d'ondulation (50) de la bande ondulée (20) toujours en contact avec le deuxième rouleau cannelé (2) dans une deuxième fente de rouleau (5) entre le deuxième rouleau cannelé (2) et un rouleau d'appui (4).
- Procédé selon la revendication 3,
caractérisé en ce que
les premières (50) et les deuxièmes (52) cimes d'ondulation (50,52) sont respectivement formées d'une courbure environ cylindrique circulaire au moins dans la zone d'apex, et cela d'un rayon de courbure (RT1) plus grand dans la zone d'apex des premières cimes d'ondulation (50) et d'un rayon de courbure (RT2) plus petit dans la zone d'apex des deuxièmes cimes d'ondulation (52). - Procédé selon la revendication 3 ou 4,
caractérisé en ce que
les flancs de liaison de la bande ondulée (20) entre des premières et des deuxièmes cimes d'ondulation (50 resp. 52) succédantes et des deuxièmes et des premières cimes d'ondulation (52 resp.50) succédantes sont formés essentiellement en ligne droite et essentiellement sans pression. - Procédé selon l'une quelconque des revendications 3 à 5,
caractérisé en ce que
une deuxième bande lisse est collée aux apex des deuxièmes cimes d'ondulation (52).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19740512 | 1997-09-15 | ||
DE19740512A DE19740512A1 (de) | 1997-09-15 | 1997-09-15 | Einrichtung zur Herstellung von Wellpappe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0901898A1 EP0901898A1 (fr) | 1999-03-17 |
EP0901898B1 true EP0901898B1 (fr) | 2004-12-08 |
Family
ID=7842395
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98117240A Expired - Lifetime EP0901898B1 (fr) | 1997-09-15 | 1998-09-11 | Appareil ainsi que procédé pour la fabrication de carton ondulé |
Country Status (3)
Country | Link |
---|---|
US (1) | US6112793A (fr) |
EP (1) | EP0901898B1 (fr) |
DE (2) | DE19740512A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104379337A (zh) * | 2012-06-15 | 2015-02-25 | 科尔赛尔Ip有限公司 | 纸板制造的改进以及与纸板制造相关的改进 |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1302918C (zh) * | 2003-01-31 | 2007-03-07 | 王子制纸株式会社 | 面层瓦楞纸粘合机和两面瓦楞纸板薄片 |
DE102007012160A1 (de) | 2007-03-12 | 2008-09-18 | Stipo Jelica | Vorrichtung und Verfahren zum Herstellen von Wellpappe sowie die Verwendung der gemäß dem Verfahren hergestellten Wellpappe |
CN102229262A (zh) * | 2011-07-13 | 2011-11-02 | 上海大松瓦楞辊有限公司 | 一种n楞型瓦楞辊 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5419796A (en) * | 1991-04-25 | 1995-05-30 | Miller; Ray R. | Method of fluting a corrugating medium |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1971667A (en) * | 1931-03-26 | 1934-08-28 | Seamless Rubber Company Inc | Method of and apparatus for treating sheet rubber |
US2717423A (en) * | 1952-01-04 | 1955-09-13 | Us Rubber Co | Method of making embossed battery separators |
US2838416A (en) * | 1953-09-21 | 1958-06-10 | Bancroft & Sons Co J | Production of inlay embossed fabrics |
US3053309A (en) * | 1958-07-21 | 1962-09-11 | S & S Corrugated Paper Mach | Corrugating flute contour |
DE2611325C3 (de) * | 1976-03-17 | 1978-09-07 | Bhs-Bayerische Berg-, Huetten- Und Salzwerke Ag, 8000 Muenchen | Einseitige Wellpappenmaschine |
DE8217295U1 (de) * | 1982-06-16 | 1982-10-07 | Werner H.K. Peters Maschinenfabrik Gmbh, 2000 Hamburg | Einseitige wellpappenmaschine |
US4531996A (en) * | 1984-05-09 | 1985-07-30 | Corrugating Roll Corporation | Single facer corrugating machine |
GB9323946D0 (en) * | 1993-11-20 | 1994-01-05 | Langston The Corp | Manufacture of corrugated board |
JP3388929B2 (ja) * | 1994-05-13 | 2003-03-24 | 三菱重工業株式会社 | シングルフェーサ及びシングルフェーサ用段成形ロール |
-
1997
- 1997-09-15 DE DE19740512A patent/DE19740512A1/de not_active Withdrawn
-
1998
- 1998-09-11 DE DE69828005T patent/DE69828005T2/de not_active Expired - Fee Related
- 1998-09-11 US US09/151,470 patent/US6112793A/en not_active Expired - Fee Related
- 1998-09-11 EP EP98117240A patent/EP0901898B1/fr not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5419796A (en) * | 1991-04-25 | 1995-05-30 | Miller; Ray R. | Method of fluting a corrugating medium |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104379337A (zh) * | 2012-06-15 | 2015-02-25 | 科尔赛尔Ip有限公司 | 纸板制造的改进以及与纸板制造相关的改进 |
Also Published As
Publication number | Publication date |
---|---|
EP0901898A1 (fr) | 1999-03-17 |
US6112793A (en) | 2000-09-05 |
DE69828005D1 (de) | 2005-01-13 |
DE19740512A1 (de) | 1999-04-29 |
DE69828005T2 (de) | 2005-04-14 |
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