EP0532813A1 - Paneelstruktur aus Wellpappe mit drei Lagen - Google Patents

Paneelstruktur aus Wellpappe mit drei Lagen Download PDF

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Publication number
EP0532813A1
EP0532813A1 EP91420334A EP91420334A EP0532813A1 EP 0532813 A1 EP0532813 A1 EP 0532813A1 EP 91420334 A EP91420334 A EP 91420334A EP 91420334 A EP91420334 A EP 91420334A EP 0532813 A1 EP0532813 A1 EP 0532813A1
Authority
EP
European Patent Office
Prior art keywords
thickness
layers
corrugated cardboard
grooves
strata
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
EP91420334A
Other languages
English (en)
French (fr)
Other versions
EP0532813B1 (de
Inventor
Jacques Petiard
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.)
CELTA
Original Assignee
CELTA
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 CELTA filed Critical CELTA
Publication of EP0532813A1 publication Critical patent/EP0532813A1/de
Application granted granted Critical
Publication of EP0532813B1 publication Critical patent/EP0532813B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D21H27/30—Multi-ply
    • D21H27/40—Multi-ply at least one of the sheets being non-planar, e.g. crêped

Definitions

  • the present invention is in the field of laminate products, and more particularly relates to a corrugated cardboard plate with triple grooves.
  • Another drawback is the low resistance to penetration of the outer surfaces of the plates, due to the space left by the grooves therebetween, when the distance separating each neighboring peak from said grooves is large.
  • the alteration of the outer surfaces of said plate due to these drawbacks results in a reduction in the rigidity of the plate.
  • the object of the present invention is to provide a corrugated cardboard plate with triple grooves having better flatness of its two outer faces and greater resistance to penetration thereof.
  • Another object of the present invention is the considerable increase in the overall rigidity of said plate, more particularly its resistance to bending in particular in the direction perpendicular to the grooves.
  • a sheet of corrugated cardboard with triple grooves according to the present invention is mainly characterized in its greatest generality in that for a given thickness of the plate, its external layers, playing the role of structured structures, that is to say of parts working in traction, are braced in the manner of trusses or I-beams for example, by a trellis formed by the central layer, so that, as in beams or other structural elements, the tensile strength of the external layers is generally translated for the corrugated board, in a resistance to bending;
  • corrugations of small amplitude are also of small spacing, which results in a relatively high density structure, while conversely corrugations of large amplitude (very thick stratum) are of great spacing, and consequently of lower density.
  • the structure proposed by the invention is quite similar to that of a set of
  • the outer layers are of substantially equal thickness, while the thickness of the inner layer is at least equal to half of the total thickness of said corrugated cardboard plate.
  • the thickness of any of the outer layers is at most equal to half the thickness of the inner layer, and by substantially equal thicknesses is meant that the ratio between the thickness of a of the outer layers and the thickness of the other outer layer is between 0.75 and 1.35.
  • the thickness of the internal layer is equal to 6.5 millimeters and the thickness of the plate is equal to 12 millimeters, the external layers having a thickness of the order of 3 millimeters.
  • Figures 1 to 3 are accompanied by a box diagrammatically illustrating the differences in density of the strata, for each of the section views.
  • FIG. 4 is a perspective view of the plate of FIG. 3.
  • the thicknesses of the strata the plate of the invention meet the definitions given above, namely: 0.75 ⁇ e1 / e2 ⁇ 1.35 and e2> E / 2 Thanks to the characteristic arrangement of the invention, a considerable increase has been observed in the resistance to penetration, and above all in the resistance to bending; we also improved the flatness of the faces.

Landscapes

  • Laminated Bodies (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
EP91420334A 1990-08-31 1991-09-18 Paneelstruktur aus Wellpappe mit drei Lagen Expired - Lifetime EP0532813B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9011051A FR2666356A1 (fr) 1990-08-31 1990-08-31 Structure de plaque de carton ondule a triple cannelures.

Publications (2)

Publication Number Publication Date
EP0532813A1 true EP0532813A1 (de) 1993-03-24
EP0532813B1 EP0532813B1 (de) 1995-07-19

Family

ID=9400115

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420334A Expired - Lifetime EP0532813B1 (de) 1990-08-31 1991-09-18 Paneelstruktur aus Wellpappe mit drei Lagen

Country Status (5)

Country Link
EP (1) EP0532813B1 (de)
AT (1) ATE125319T1 (de)
DE (1) DE69111447T2 (de)
ES (1) ES2075393T3 (de)
FR (1) FR2666356A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ245923A (en) * 1993-02-17 1996-05-28 Print Ueb Ltd Panel formed from large pitch and depth corrugated board between liners; details of corner construction between such panels

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB793011A (en) * 1953-06-10 1958-04-09 Augustus Gordon Elliott Improvements in and relating to the manufacture of corrugated sheeting from paper
FR1488484A (de) * 1965-07-21 1967-11-02
US3616163A (en) * 1969-07-18 1971-10-26 Atton Box Board Co Corrugated fiberboard
FR2127638A5 (en) * 1971-02-24 1972-10-13 Feldmuehle Anlagen Prod Laminated cardboard prodn - by giving partial binder coating before couching,for improved interlaminar strength
DE2458260A1 (de) * 1974-12-10 1976-06-16 Karlheinz Schulz Bauelement

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR804234A (fr) * 1935-03-26 1936-10-19 Produit en papier à plusieurs couches et son procédé de fabrication
NL283569A (de) * 1961-10-19 1900-01-01

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB793011A (en) * 1953-06-10 1958-04-09 Augustus Gordon Elliott Improvements in and relating to the manufacture of corrugated sheeting from paper
FR1488484A (de) * 1965-07-21 1967-11-02
US3616163A (en) * 1969-07-18 1971-10-26 Atton Box Board Co Corrugated fiberboard
FR2127638A5 (en) * 1971-02-24 1972-10-13 Feldmuehle Anlagen Prod Laminated cardboard prodn - by giving partial binder coating before couching,for improved interlaminar strength
DE2458260A1 (de) * 1974-12-10 1976-06-16 Karlheinz Schulz Bauelement

Also Published As

Publication number Publication date
ATE125319T1 (de) 1995-08-15
EP0532813B1 (de) 1995-07-19
DE69111447T2 (de) 1996-03-21
FR2666356B1 (de) 1995-01-27
DE69111447D1 (de) 1995-08-24
ES2075393T3 (es) 1995-10-01
FR2666356A1 (fr) 1992-03-06

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