EP0794050A1 - Gewelltes Verpackungsmaterial und Verfahren und Vorrichtung zur Herstellung eines gewellten Verpackungsmaterials - Google Patents

Gewelltes Verpackungsmaterial und Verfahren und Vorrichtung zur Herstellung eines gewellten Verpackungsmaterials Download PDF

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Publication number
EP0794050A1
EP0794050A1 EP96490014A EP96490014A EP0794050A1 EP 0794050 A1 EP0794050 A1 EP 0794050A1 EP 96490014 A EP96490014 A EP 96490014A EP 96490014 A EP96490014 A EP 96490014A EP 0794050 A1 EP0794050 A1 EP 0794050A1
Authority
EP
European Patent Office
Prior art keywords
sheet
packaging
manufacture
faces
reinforcement
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.)
Granted
Application number
EP96490014A
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English (en)
French (fr)
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EP0794050B1 (de
Inventor
Jean-Marc Ringot
Henri Sauvaige
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.)
Cartonneries de la Lys Ondulys SA
Original Assignee
Cartonneries de la Lys Ondulys SA
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 Cartonneries de la Lys Ondulys SA filed Critical Cartonneries de la Lys Ondulys SA
Priority to DE69618167T priority Critical patent/DE69618167D1/de
Priority to AT96490014T priority patent/ATE211060T1/de
Priority to EP96490014A priority patent/EP0794050B1/de
Publication of EP0794050A1 publication Critical patent/EP0794050A1/de
Application granted granted Critical
Publication of EP0794050B1 publication Critical patent/EP0794050B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
    • B65D65/38—Packaging materials of special type or form
    • B65D65/40—Applications of laminates for particular packaging purposes
    • B65D65/403—Applications of laminates for particular packaging purposes with at least one corrugated layer
    • 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
    • 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
    • B31F1/2877—Pressing means for bringing facer sheet and corrugated webs into contact or keeping them in contact, e.g. rolls, belts
    • 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
    • B31F1/2895—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 from corrugated webs having corrugations of particular shape

Definitions

  • the present invention relates to a packaging made of fluted material in large longitudinal plies, a process for the manufacture of this packaging and a machine for carrying out the process and manufacturing the product.
  • the present invention is particularly intended for the cardboard industry and cardboard packaging which can for example be used for the packaging of various manufactured products. It also concerns the machinery industry for the production of cardboard and packaging.
  • Cardboard packaging that can be used for packaging various manufactured products is already known and corrugated cardboard is a material widely used to make this type of packaging.
  • Corrugated cardboard generally consists of at least two elements. Praying is a cover sheet which is most often flat and made of paper. It makes it possible to give corrugated cardboard a substantially smooth external appearance.
  • the second component is a reinforcing sheet called a groove which is generally obtained by deformation of a flat sheet by making undulations. This reinforcement constitutes most of the thickness of the final material and gives it transverse rigidity.
  • the two sheets are joined by any means and most often by gluing.
  • an adhesive deposit is made on the top of the corrugations of one face of the reinforcing sheet and the covering sheet is applied to it to assemble them.
  • the reinforcing sheet it is for example known to shape the reinforcing sheet by placing it between two bearing surfaces having a wavy relief. By pressing these two surfaces on the sheet, a strong constraint is imposed on it and it is deformed to produce the undulations.
  • two cylinders are used which mesh and drive the sheet by deforming it. A corrugated reinforcing sheet is thus obtained.
  • the cylinders are often large, for example a length of 2.5 meters in order to produce large sheets of corrugated cardboard. Investment in equipment is therefore heavy.
  • Corrugated cardboard packaging is currently used very generally. Their profile is substantially sinusoidal and stepped. constant.
  • the sinusoidal profiles are not the most favorable forms for the optimal mechanical strength of the packaging.
  • the corrugated material is stressed in compression according to its thickness, the curved profile of the reinforcing sheet rapidly deforms and collapses under low loads.
  • a corrugated cardboard plate does not have an optimal stiffness due to the rapid deformation of the corrugated profile.
  • packages made of current corrugated material have the drawback of not having optimum mechanical strength in compression and in bending.
  • a sinusoidal profile has a relatively long contour, from 2 to 6% longer for example than a sawtooth contour.
  • the lengths of ply necessary for the manufacture of the reinforcing sheet are therefore greater.
  • Paper consumption is a very sensitive point in the cardboard and cardboard packaging industry due to the amount of paper used. For example, lengths of 30,000 km of aquifers are commonly transformed there per year per machine.
  • the methods of shaping the reinforcing sheet often use two bearing surfaces. There are therefore two solid-solid contacts on the sheet of paper. These contacts deteriorate the sheet and cause fractures which are detrimental to the strength and use of the packaging.
  • the bearing surfaces are meshing cylinders, these tend to crush the sheet under the action of a force perpendicular to its surface.
  • the meshing of the grooves is done with a high friction, which subjects the sheet to a high lateral force. This effort tends to tear the sheet or to create incipient fractures.
  • the reinforcement sheet is very generally formed by means of two fluted cylinders. They often have to meet demanding specifications.
  • the meshing requires very precise dimensions and adjustments and a significant surface hardness.
  • the cylinders must often be made of steel and undergo heat treatments to increase their surface hardness.
  • the profile of the cylinders must be slightly curved so that, during operation, the bearing force is well distributed along the cylinders and so that the contact with the sheet is well uniform.
  • the packaging described by the present invention is said to be fluted and non-corrugated material because the shapes of reinforcing sheets that can be produced are no longer limited to corrugations and may for example be sawtooth or slot profiles, possibly with a variable pitch.
  • One of the main aims of the invention is to produce a packaging made of fluted material having good mechanical strength.
  • a characteristic of the packaging made of fluted material described here is in fact to present a reinforcing sheet with substantially rectilinear groove shapes. Therefore, in the thickness direction, the reinforcing sheet has less tendency to bend than in the case of corrugated profiles existing so far.
  • the packaging has the advantage of having good mechanical strength, especially in compression.
  • the packaging has the advantage of having good rigidity. Another advantage of this profile is to offer a large contact surface between the reinforcing sheet and the cover sheet. Thus, the fluted material acquires a good cohesion which reinforces these mechanical characteristics.
  • Another object is to produce packaging made of fluted material whose cost price is low.
  • the present invention allows decrease the cost of raw material.
  • the consumption of paper is further reduced. Indeed, the triangular contour is very short compared in particular to that of the wavy profiles. A lower quantity of material is therefore necessary for its manufacture. Paper consumption can be reduced by creating a corrugated profile with variable pitch.
  • the corrugated cardboard packaging described here has the advantage of offering the user or the manufacturer the choice of the shape of the grooves according to the application envisaged for the packaging and no longer according to the manufacturing requirements.
  • the method and the machine for manufacturing fluted material packaging described by the present invention also have several advantages.
  • the use of a single bearing surface has in particular interesting consequences.
  • One of the aims of the present invention is to propose a method and a machine making it possible to manufacture packaging made of fluted material, the flutes of which have very diverse shapes.
  • the present invention limits the form requirements linked to operation. We can therefore consider very diverse forms of grooves in particular sawtooth or slots, with variable pitch.
  • Another object of the present invention is to allow the manufacture of packaging made of fluted material with a reduced production cost.
  • Another advantage of the invention is that the life of the bearing surface is significantly increased.
  • the elimination of the operation by solid-solid support greatly limits the wear of the support surface.
  • Equipment renewal is therefore less frequent and limits the cost.
  • Another advantage is to allow the production of very varied groove shapes and in particular sawtooth with possibly a variable pitch in order to save raw materials.
  • the proposed method does less damage to the material to be shaped.
  • the sheet thicknesses can be small without the risk of tearing them.
  • the mass of paper consumed is reduced.
  • Another goal is to enable the production of better quality products.
  • the sheet to be deformed is no longer constrained between two bearing surfaces. As a result, it is less crushed and undergoes low lateral stresses. Thus, it is observed that the reinforcing sheet is less marked and has less incipient fractures in the area where it has been deformed. It also tears less often.
  • One of the advantages of the invention is therefore to do little damage to the reinforcing sheet.
  • Another object is to reduce the operating noise of the device. By eliminating the solid-solid contact, in particular produced in the case of a gear with two fluted cylinders, noise pollution is greatly limited.
  • Another aim is to allow high production speeds.
  • the vibrations and the resonance phenomena are very reduced by the absence of meshing and it is possible to use high production rates.
  • Another object of the invention is to lighten the design of machines for manufacturing corrugated cardboard packaging by eliminating a bearing surface.
  • the product which is the subject of the present invention relates to a packaging made of fluted material in large longitudinal plies consisting of at least one reinforcing sheet and a covering sheet, for example of paper, secured by one of their faces, intended for the production resistant packaging, particularly in compression and bending, characterized in that the profile of the reinforcing sheet consists of grooves with substantially rectilinear shapes such as saw teeth or slots made in the material of the sheet without damaging it and uniformly on the web for the production of resistant packaging products.
  • Figure 1 illustrates a particular embodiment of the packaging in fluted material object of the present invention.
  • the embodiment shown is that of sawtooth grooves.
  • Figure 2 shows schematically a second embodiment of the packaging in fluted material with grooves in slots.
  • FIG. 3 represents an example of packaging made of fluted material whose profile is variable along the reinforcement sheet.
  • Figure 4 shows a bearing surface consisting of a grooved cylinder and a compression chamber.
  • Figures 5 and 6 show schematically the manufacture of the packaging in fluted material according to particular embodiments of the invention.
  • the present invention relates to a packaging of fluted material (1) in large longitudinal layers, consisting of at least one reinforcing sheet (3) and a cover sheet (2), for example of paper, secured by one of their faces. .
  • the cover sheet (2) most often gives the packaging its external appearance. For example, it will be flat and smooth.
  • the cover sheet (2) may be made of different materials, in particular paper. It may have variable dimensions.
  • the reinforcement sheet (3) constitutes most of the thickness of the packaging and gives it its rigidity. It can be made of different materials, especially paper. Its width, its length, its thickness can be variable.
  • the reinforcing sheet (3) has a relief which can take very diverse aspects.
  • the profile of the grooves may nevertheless consist of substantially rectilinear edges to increase the mechanical strength of the packaging (1).
  • the rising and falling sides of the reinforcing sheet (3) will be substantially rectilinear over a large part of their length. It is possible, for example, to produce a sawtooth profile, as illustrated in FIG. 1, or a notched profile, as illustrated in FIG. 2.
  • the top of the grooves may not be straight and be bent.
  • Variable profiles can also be produced along the sheet by modifying the shape and distribution of the grooves: one can for example modify their spacing, their pitch, their height or their width. An example is shown in Figure 3.
  • the reinforcing sheet (3) and the covering sheet (2) are integral by one of their faces.
  • This assembly can for example be constituted by a bonding line at the top of the grooves of the reinforcement sheet (3) in contact with the cover sheet (2).
  • the reinforcing sheet (3) does not show any deterioration of its material at the level of the grooves. It is in fact manufactured in such a way as to avoid marking and incipient fractures in deformed areas.
  • this profile is produced uniformly along the reinforcement sheet, ie with a constant shape and dimensions of grooves.
  • the present invention also relates to a method and a machine for manufacturing packaging made of fluted material.
  • One of the characteristics of the machine described here is to have a single bearing surface (5).
  • This surface can be made of various materials, in particular of steel, and can come in a variety of shapes and sizes.
  • the grooves are in this case hollow longitudinal grooves in the steel. They can be presented in various aspects, in particular with a sawtooth, square or wavy profile.
  • the machine also has means (4) for applying a flow of gas (6) under pressure on one face of the sheet to be shaped.
  • Mean (4) for applying a flow of gas (6) under pressure on one face of the sheet to be shaped.
  • Their number, shape, size and material are not limited.
  • these means are a compression chamber (4).
  • This chamber (4) may be made of steel and comprise at least two parts: a gas inlet and a part allowing the application of the flux. It will be designed to direct the flow towards the chosen application area with the desired pressure.
  • a temple for making the chamber (4) is shown in FIG. 4.
  • the chamber (4) comprises means for humidifying the gas.
  • These means can be constituted by any known device.
  • the compression chamber (4) comprises means for preheating the gas.
  • fluted material packaging requires assembly means. Bonding may in particular be used.
  • Figure 5 shows schematically the case where the cover (2) is applied to the reinforcement sheet (3) by means of a smooth press (9).
  • the application of the cover sheet (2) on the reinforcement sheet (3) is effected by means of a compression gutter (12).
  • This gutter (12) will have variable shapes and dimensions. It will preferably be made to adapt to the shape of the support surface (5).
  • the fluid pressure coming from the gutter (12) makes it possible to press the cover sheet (2) on the reinforcement sheet (3) to assemble them.
  • Rollers (11) can be used to bring, by guiding it, the cover sheet (2) towards the gutter (12) and to evacuate, by guiding it, the packaging made of fluted material (1) manufactured.
  • the machine for manufacturing packaging made of fluted material has drive means (7) making it possible to bring the sheet onto the bearing surface (5).
  • rollers (7) are parallel and are placed facing each other on the sheet. They are driven by their own rotation by any means of motorization in order to be able to rotate in opposite directions and carry the sheet placed between them. They apply light pressure to the sheet so as not to damage it.
  • these rollers (7) are grooved and mesh with one another in order to carry out a pre-shaping of the sheet.
  • the present invention also uses a flow of gas (6) under pressure.
  • gases can be used and in particular compressed air or steam.
  • the surface of application of the flow and the pressure of the gas are not limited but will often remain unimportant.
  • the sheet to be shaped (3) is first brought to the cylinder (5). To do this, rollers (7) can be used as illustrated in FIG. 5. Once the sheet in position, a flow of pressurized gas (6) coming from the compression chamber (4) is applied to one face of the sheet (3).
  • the gas flow (6) exerts a pressure which presses the sheet on the cylinder (5).
  • the sheet then tends to follow the shape of the outline of the cylinder (5).
  • the flow (6) and the reaction force of the cylinder (5) impose a deformation on the sheet (3).
  • the reinforcing sheet (3) is thus produced and its shape is determined by the relief of the support cylinder (5).
  • the support cylinder (5) can rotate to continue shaping along the sheet (3) and to bring the reinforcing sheet (3) to the assembly means.
  • FIG. 5 illustrates that glue (10) can be deposited on the raised surfaces of one face of the reinforcing sheet (3) by means of a glue (8). You can then apply the cover sheet (2).
  • This application can be done by means of a press (9) which brings the cover sheet and puts it in contact, by exerting significant pressure, with the reinforcement sheet (3).
  • the pressurized gas (13) presses the cover sheet (2) on the reinforcement sheet (3).
  • This pressurized gas is applied by means of a gutter (12) placed near the bearing surface.
  • the gutter (12) compresses the sheet (2) on the sheet (3) to a pressure sufficient for the contact of the two sheets to be important.
  • this pressurized gas (13), for example steam, is heated and humidified to promote the bonding of the cover (2) and reinforcement (3) sheets.
  • the heat supply or the humidification can be carried out via the gas flow (6) and (13).
  • a particular embodiment of the invention comprises means for preheating the gas flow (6) and (13) making it possible to heat the reinforcing sheet (3) at the time of its shaping and the sheet ( 2) at the time of bonding.
  • means make it possible to humidify the flow of pressurized gas (6) and (13) in order to provide a supply of moisture for the reinforcing sheet (3) and the sheet cover (2).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
  • Buffer Packaging (AREA)
EP96490014A 1996-03-08 1996-03-08 Gewelltes Verpackungsmaterial und Verfahren und Vorrichtung zur Herstellung eines gewellten Verpackungsmaterials Expired - Lifetime EP0794050B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE69618167T DE69618167D1 (de) 1996-03-08 1996-03-08 Gewelltes Verpackungsmaterial und Verfahren und Vorrichtung zur Herstellung eines gewellten Verpackungsmaterials
AT96490014T ATE211060T1 (de) 1996-03-08 1996-03-08 Gewelltes verpackungsmaterial und verfahren und vorrichtung zur herstellung eines gewellten verpackungsmaterials
EP96490014A EP0794050B1 (de) 1996-03-08 1996-03-08 Gewelltes Verpackungsmaterial und Verfahren und Vorrichtung zur Herstellung eines gewellten Verpackungsmaterials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96490014A EP0794050B1 (de) 1996-03-08 1996-03-08 Gewelltes Verpackungsmaterial und Verfahren und Vorrichtung zur Herstellung eines gewellten Verpackungsmaterials

Publications (2)

Publication Number Publication Date
EP0794050A1 true EP0794050A1 (de) 1997-09-10
EP0794050B1 EP0794050B1 (de) 2001-12-19

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EP96490014A Expired - Lifetime EP0794050B1 (de) 1996-03-08 1996-03-08 Gewelltes Verpackungsmaterial und Verfahren und Vorrichtung zur Herstellung eines gewellten Verpackungsmaterials

Country Status (3)

Country Link
EP (1) EP0794050B1 (de)
AT (1) ATE211060T1 (de)
DE (1) DE69618167D1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0911145A2 (de) * 1997-10-22 1999-04-28 Mitsubishi Heavy Industries, Ltd. Einseitige Wellpappenmaschine
EP0940354A1 (de) * 1998-03-02 1999-09-08 Fabriques De Tabac Reunies S.A. Verpackung für Rauchwaren
NL1015909C2 (nl) * 2000-08-10 2002-02-12 Snel Golfkarton B V Althans in hoofdzaak uit cellulose materiaal vervaardigd wandelement.
WO2002014061A1 (en) * 2000-08-15 2002-02-21 M-Real Oyj Method and apparatus for producing board and a board product
EP2186733A2 (de) * 2008-11-14 2010-05-19 Sprick GmbH Bielefelder Papier- und Wellpappenwerke & Co. Bahn aus einem Papierfasermaterial, insbesondere Wellpappenbahn
CN109514443A (zh) * 2018-12-25 2019-03-26 郑州中研高科实业有限公司 一种具有弧形面抛光功能的聚氨酯抛光盘

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB654073A (en) * 1944-01-14 1951-06-06 Dry Corrugating Method V Aksel A machine for the production of corrugated cardboard
GB984788A (en) * 1964-02-07 1965-03-03 Crown Zellerbach Corp Paperboard corrugating apparatus and process
GB985199A (en) * 1960-06-10 1965-03-03 Crown Zellerbach Corp Pleated paper-board or like structure and method of forming same
US3235432A (en) * 1962-06-18 1966-02-15 Crown Zellerbach Corp Composite structure and method of forming same
GB1037726A (en) * 1964-01-30 1966-08-03 Olof Einar Larsson Method and apparatus for making corrugated cardboard, paper, plastics material or metal foil
GB1107306A (en) * 1965-05-06 1968-03-27 Clupak Inc Production of paper webs
US3950585A (en) * 1972-11-17 1976-04-13 Hale Jesse R Sandwich panel structure
EP0104372A1 (de) * 1982-09-03 1984-04-04 Werner H. K. Peters Maschinenfabrik GmbH Einseitige Wellpappenmaschine
JPS60132726A (ja) * 1983-12-22 1985-07-15 Torii Kasei Kk コルゲ−ト管の製造方法および装置
US4873048A (en) * 1985-07-24 1989-10-10 Oy Uponor Ab Method for the formation of a hole in a plastic pipe
US5176609A (en) * 1984-05-22 1993-01-05 Highland Supply Corporation Apparatus and method using air pressure and vacuum to form flat-paneled flower pot cover

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB654073A (en) * 1944-01-14 1951-06-06 Dry Corrugating Method V Aksel A machine for the production of corrugated cardboard
GB985199A (en) * 1960-06-10 1965-03-03 Crown Zellerbach Corp Pleated paper-board or like structure and method of forming same
US3235432A (en) * 1962-06-18 1966-02-15 Crown Zellerbach Corp Composite structure and method of forming same
GB1037726A (en) * 1964-01-30 1966-08-03 Olof Einar Larsson Method and apparatus for making corrugated cardboard, paper, plastics material or metal foil
GB984788A (en) * 1964-02-07 1965-03-03 Crown Zellerbach Corp Paperboard corrugating apparatus and process
GB1107306A (en) * 1965-05-06 1968-03-27 Clupak Inc Production of paper webs
US3950585A (en) * 1972-11-17 1976-04-13 Hale Jesse R Sandwich panel structure
EP0104372A1 (de) * 1982-09-03 1984-04-04 Werner H. K. Peters Maschinenfabrik GmbH Einseitige Wellpappenmaschine
JPS60132726A (ja) * 1983-12-22 1985-07-15 Torii Kasei Kk コルゲ−ト管の製造方法および装置
US5176609A (en) * 1984-05-22 1993-01-05 Highland Supply Corporation Apparatus and method using air pressure and vacuum to form flat-paneled flower pot cover
US4873048A (en) * 1985-07-24 1989-10-10 Oy Uponor Ab Method for the formation of a hole in a plastic pipe

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 294 (M - 431) 20 November 1985 (1985-11-20) *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0911145A2 (de) * 1997-10-22 1999-04-28 Mitsubishi Heavy Industries, Ltd. Einseitige Wellpappenmaschine
EP0911145A3 (de) * 1997-10-22 2001-01-03 Mitsubishi Heavy Industries, Ltd. Einseitige Wellpappenmaschine
EP0940354A1 (de) * 1998-03-02 1999-09-08 Fabriques De Tabac Reunies S.A. Verpackung für Rauchwaren
NL1015909C2 (nl) * 2000-08-10 2002-02-12 Snel Golfkarton B V Althans in hoofdzaak uit cellulose materiaal vervaardigd wandelement.
EP1180564A1 (de) * 2000-08-10 2002-02-20 Snel Golfkarton B.V. Wandelement aus Zellulose
WO2002014061A1 (en) * 2000-08-15 2002-02-21 M-Real Oyj Method and apparatus for producing board and a board product
US7261789B2 (en) 2000-08-15 2007-08-28 Avenira Oy Method of producing paperboard product with an even thickness
EP2186733A2 (de) * 2008-11-14 2010-05-19 Sprick GmbH Bielefelder Papier- und Wellpappenwerke & Co. Bahn aus einem Papierfasermaterial, insbesondere Wellpappenbahn
EP2186733A3 (de) * 2008-11-14 2014-02-26 Sprick GmbH Bielefelder Papier- und Wellpappenwerke & Co. Bahn aus einem Papierfasermaterial, insbesondere Wellpappenbahn
CN109514443A (zh) * 2018-12-25 2019-03-26 郑州中研高科实业有限公司 一种具有弧形面抛光功能的聚氨酯抛光盘

Also Published As

Publication number Publication date
DE69618167D1 (de) 2002-01-31
ATE211060T1 (de) 2002-01-15
EP0794050B1 (de) 2001-12-19

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