EP1743986A2 - Hohlkammerplatte - Google Patents

Hohlkammerplatte Download PDF

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Publication number
EP1743986A2
EP1743986A2 EP20060116813 EP06116813A EP1743986A2 EP 1743986 A2 EP1743986 A2 EP 1743986A2 EP 20060116813 EP20060116813 EP 20060116813 EP 06116813 A EP06116813 A EP 06116813A EP 1743986 A2 EP1743986 A2 EP 1743986A2
Authority
EP
European Patent Office
Prior art keywords
wall
spacers
multiwall
plate
plate according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20060116813
Other languages
English (en)
French (fr)
Inventor
Laurent Porret
Jean-Philippe Coste
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.)
DS Smith Kaysersberg SAS
Original Assignee
DS Smith Kaysersberg SAS
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 DS Smith Kaysersberg SAS filed Critical DS Smith Kaysersberg SAS
Publication of EP1743986A2 publication Critical patent/EP1743986A2/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/54—Slab-like translucent elements
    • E04C2/543—Hollow multi-walled panels with integrated webs

Definitions

  • the present invention relates to multiwall wall sheets obtained by extrusion of a thermoplastic material, such as polycarbonate, through a die of defined shape.
  • the invention relates in particular to the plates for the realization of covers or partitions in the field of the building.
  • the cellular sheets having several walls between two outer covers are known in particular by the patents EP 0 741 215 and FR 2,827,543 .
  • the document EP 0 741 215 door on a plate having several internal walls, and perpendicular and oblique spacers between two outer covers.
  • such plates are relatively large. It is desirable that they bend as little as possible, especially in the direction of width. Moreover, they must be made of a suitable material so that it is translucent; any transformation or evolution must retain that property.
  • An object of the invention is therefore to provide a multiwall wall plate with increased resistance to sagging.
  • a multiwall wall plate obtained by extrusion of a thermoplastic material comprising two outer covers, at least a first internal wall parallel and close to one of said outer covers, spacers perpendicular to the two outer covers, oblique spacers between two adjacent perpendicular struts, characterized in that it further comprises one or more struts forming stiffeners connecting said cover outside said first inner wall, between two adjacent perpendicular struts.
  • This structure has the advantage of enhancing the resistance to deformation of the outer cover, without altering the thermal insulation properties and keeping a good level of light transmission.
  • Another advantage of this structure is to allow a reduction in the deformation of the plate without the need to increase the thickness of the covers, and without reducing the distance between two spacers.
  • This solution therefore provides an economic gain over traditional solutions for strengthening the thickness of coverage or multiplication of the number of spacers.
  • the weight of the multiwall wall sheet is between 2000 and 4000 g / m 2 , and preferably between 2250 and 3000 g / m 2 .
  • the thickness of the plate is between 10 and 40 mm and preferably between 16 and 32 mm.
  • Another surprising advantage is to be able to reduce the friction between the plate and the production equipment, in particular the caliber, on the face having the stiffeners added. This absence of friction, reduces the formation of usual dull areas, and makes the light transmission is greater than expected. It can be seen that the dull areas on the surface are reduced because of the lower pitch between the elements at the level of the cover and the better resistance of the latter to the gauge.
  • This phenomenon of friction limitation also contributes to a decrease in the surface roughness.
  • a honeycomb plate according to a first embodiment of the invention.
  • Alveolar plates are in themselves well known. They are obtained by extrusion of a material in the plastic state through a die comprising two parallel lips and a punch, of appropriate shape, disposed between these two lips. The walls and partitions are defined by the spaces formed between the punch elements and or die lips. At the outlet of the extrusion head, the plate thus formed is still deformable. It then passes between the walls of a caliber which by suction keeps it in shape until cooling.
  • the material is advantageously thermoplastic, especially polycarbonate.
  • the multiwall wall plate comprises two outer covers 1 and 5, and three inner walls 2, 3 and 4 which are parallel to them.
  • a first 2 and a second 4 internal walls are arranged near the outer covers, the third being arranged between them two and being median here.
  • the plate also consists of perpendicular struts 8, 9 and 9 ', and oblique 6 and 7 relative to the plane of the covers.
  • the perpendicular struts 8 and 9 preferably connect the two outer covers and are arranged at regular intervals in the width direction of the plate.
  • the oblique spacers 6 and 7 form the diagonals of rectangles composed one by the spacers 8 and 9, and the inner walls 2 and 3, the other by the spacers 8 and 9, and the inner walls 3 and 4.
  • the oblique spacers 6 and 7, the inner wall 3 and the spacer 9 converge in a junction line, perpendicular to the plane of the figure. There are two other junction lines between the first internal wall 2, the oblique spacer 6 and the perpendicular spacer 8 on the one hand, and between the inner wall 4, the oblique spacer 7 and the perpendicular spacer 8 of somewhere else.
  • stiffening struts 10 and 11 are arranged at regular intervals.
  • the number of stiffeners is at least one; it depends on the desired deflection strength. Their spacing may be constant or vary.
  • FIG. 5 shows another embodiment.
  • the same elements carry the same reference.
  • the multiwall wall plate has two outer covers 1 and 5, and three inner walls 2, 3 and 4 parallel. A first 2 and a second 4 internal walls are disposed near the outer covers, the third is here median.
  • the plate also consists of perpendicular struts 8, 9 and 9 ', and oblique 6 and 7.
  • the perpendicular struts 8 and 9 connect the two outer covers and are arranged at regular intervals, in the direction of the width of the plate.
  • the oblique spacers 6 and 7 form the diagonals of rectangles composed one by the spacers 8 and 9, and the inner walls 2 and 3, the other by the spacers 8 and 9, and the inner walls 3 and 4.
  • the oblique spacers 6 and 7, the inner wall 3 and the spacer 9 converge in a junction line.
  • Two other connecting lines are formed between the first inner wall 2, the oblique spacer 6 and the perpendicular spacer 8 on the one hand, and between the inner wall 4, the oblique spacer 7 and the perpendicular spacer 8 on the other go.
  • the pattern defined between the spacers 8 and 9 ' is symmetrical with the pattern defined by the spacers 8 and 9 with respect to the spacer 8 being the axis of symmetry.
  • At least one spacers forming stiffeners 10 and 11 are arranged according to the invention, at regular intervals between the outer cover 1 and the inner wall 2, and spacers, at least one, forming stiffeners 12 and 13 are arranged at regular gap between the outer cover 5 and the inner wall 4.
  • the present invention is not limited to the structures shown in FIGS. 4 and 5. It applies to a structure comprising, for example, a single first internal wall, as in FIG. 1 or only a first and a second internal wall without a wall. median or oblique diagonals arranged in cross or not. It also applies to other structures having oblique spacers connecting two non-adjacent inner walls, or perpendicular spacers arranged at non-regular intervals.
  • FIGS. 1, 2 and 3 The structures of the prior art are shown in FIGS. 1, 2 and 3.
  • the multi-walled honeycomb plates are composed of two outer covers, internal walls and perpendicular and oblique spacers.
  • the structure of Figure 1 comprises only a first inner wall with oblique struts between it and the opposite cover.
  • Figure 2 shows a structure with a second inner wall near a blanket.
  • Figure 3 shows a structure with a third inner wall between the first two.
  • the oblique spacers are diagonally rectangles formed by the internal spacers and the perpendicular partitions or spacers.
  • Tests were carried out to characterize the structure of the materials and to compare structure 1, of FIG. 3, of the prior art with structure 2 of the invention. Thus, the tests were carried out on the deformation of the structures, on the light transmission, the thermal insulation and the range.
  • the height of the cells formed between the first walls and the covers is here less than those of the cells having diagonal spacers. This is a preferred ratio between these heights.
  • Table 1 presents the main parameters characterizing the structures 1 and 2. It should be noted that these plates are identical to the only one difference of the presence of stiffeners with a thickness of 0.2 mm for structure 2.
  • the samples have a size of 80 mm in the direction of the cells and 500 mm in the cross direction, a weight of 20 N is applied on a bar of 10 mm in diameter in the center of the sample.
  • the coextruded cover of the plate is in contact with the bar.
  • the deformation is noted after a time of 10 min under load.
  • the tests are carried out with a plate size of 1500 ⁇ 460 mm with a distance between support of 1350 mm. Deformation under load localized is placed in the direction of extrusion, that is to say: 4.5 kg on 20.2 ⁇ 11.8 cm and 7.5 kg on 16 ⁇ 6 cm. ⁇ b> Table 6 ⁇ / b> Results of tests carried out with a localized load.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Panels For Use In Building Construction (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
EP20060116813 2005-07-13 2006-07-07 Hohlkammerplatte Withdrawn EP1743986A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0552179A FR2888594B1 (fr) 2005-07-13 2005-07-13 Plaque alveolaire multiparois

Publications (1)

Publication Number Publication Date
EP1743986A2 true EP1743986A2 (de) 2007-01-17

Family

ID=36127911

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060116813 Withdrawn EP1743986A2 (de) 2005-07-13 2006-07-07 Hohlkammerplatte

Country Status (2)

Country Link
EP (1) EP1743986A2 (de)
FR (1) FR2888594B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2464331A (en) * 2008-07-03 2010-04-21 David John Anderson Glazing
KR100984587B1 (ko) * 2009-12-23 2010-09-30 신동재 복층 채광판
WO2017103859A1 (en) * 2015-12-18 2017-06-22 Sabic Global Technologies B.V. Lightweight multiwall sheet with high stiffness and method of making it
KR102497656B1 (ko) * 2021-11-29 2023-02-10 주식회사 에스폴리텍 내구성이 강화된 복층판
IT202200005567A1 (it) * 2022-03-22 2023-09-22 Exolon Group S P A Pannello alveolare estruso con geometria ottimizzata

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4271823A (en) * 1975-12-31 1981-06-09 The Franklin Institute Unitary solar collector panel
US4114597A (en) * 1975-12-31 1978-09-19 The Franklin Institute Unitary solar collector
US4550543A (en) * 1984-01-09 1985-11-05 Marcello Valenzano Construction forms
FR2732386B1 (fr) * 1995-03-29 1997-06-13 Kaysersberg Packaging Sa Plaques de polycarbonate, notamment plaques destinees a la couverture
AU2002210738A1 (en) * 2000-11-02 2002-05-15 Harry George Rhodes Sealing apparatus and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2464331A (en) * 2008-07-03 2010-04-21 David John Anderson Glazing
KR100984587B1 (ko) * 2009-12-23 2010-09-30 신동재 복층 채광판
WO2017103859A1 (en) * 2015-12-18 2017-06-22 Sabic Global Technologies B.V. Lightweight multiwall sheet with high stiffness and method of making it
KR102497656B1 (ko) * 2021-11-29 2023-02-10 주식회사 에스폴리텍 내구성이 강화된 복층판
IT202200005567A1 (it) * 2022-03-22 2023-09-22 Exolon Group S P A Pannello alveolare estruso con geometria ottimizzata

Also Published As

Publication number Publication date
FR2888594B1 (fr) 2007-10-26
FR2888594A1 (fr) 2007-01-19

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