FR2461567A1 - Use of soft laminate cores for forming solid sheet materials - to obtain deep drawn or complex shapes with smooth surfaces - Google Patents

Use of soft laminate cores for forming solid sheet materials - to obtain deep drawn or complex shapes with smooth surfaces Download PDF

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Publication number
FR2461567A1
FR2461567A1 FR7918890A FR7918890A FR2461567A1 FR 2461567 A1 FR2461567 A1 FR 2461567A1 FR 7918890 A FR7918890 A FR 7918890A FR 7918890 A FR7918890 A FR 7918890A FR 2461567 A1 FR2461567 A1 FR 2461567A1
Authority
FR
France
Prior art keywords
sheet materials
deep drawn
solid sheet
smooth surfaces
complex shapes
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Withdrawn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
FR7918890A
Other languages
French (fr)
Inventor
Pierre-Jean Riboud
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.)
Lincrusta SA
Original Assignee
Lincrusta 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 Lincrusta SA filed Critical Lincrusta SA
Priority to FR7918890A priority Critical patent/FR2461567A1/en
Publication of FR2461567A1 publication Critical patent/FR2461567A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/14—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor using multilayered preforms or sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/12—Deep-drawing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

Hollow dishes involving deep drawn and/or sharp changes of form and made using solid sheet materials (paper/cardboard/metal/plastic) are made using a laminate faced with the solid material enclosing a core of relatively soft, compressible material, i.e. a foam or a bulky fibrous or agglomerate material. The soft core accommodates contour differentials between the inner and outer surfaces of the formed shape, so that both surfaces can be formed without local splitting or creasing on the outside/inside of bends respectively.

Description

Il est connu d'emboutir des matériaux compacts, par exemple du papier, du carton, une matière plastique ou un métal0
Mais lorsqu'on cherche à réaliser sur ces matières un emboutissage profond ou serré, on rencontre des difficultés telles qu'il est impossible d'olîtenir un objet embouti exempt de défaut.It is known to stamp compact materials, for example paper, cardboard, plastic or metal.
But when one seeks to achieve deep or tight stamping on these materials, one encounters difficulties such that it is impossible to obtain a stamped object free from defects.

Il se produit dans les parties courbes une accumulation de matière car celle-ci n'est pas compressible. Cette accumulation de matière peut entraîner la formation de plis sur la surface extéri" eure de l'objet; si celui-ci est constitué, par exemple, par un couvercle d'obturation, ces plis sont la cause de fuites,
Il se produit, par ailleurs, un laminage de la matière que provoque la formation de bavures à la base de l'objet embouti.En- fin, dans le cas d'une matière fibreuse, un emboutissage nécessitant un angle de pliage assez serré occasionne des ruptures de fibres.An accumulation of material occurs in the curved parts because it is not compressible. This accumulation of material can lead to the formation of folds on the external surface of the object; if the latter consists, for example, of a obturation cover, these folds are the cause of leaks,
There is, moreover, a rolling of the material which causes the formation of burrs at the base of the stamped object. Finally, in the case of a fibrous material, a stamping requiring a fairly tight bending angle causes fiber breaks.

La présente invention a pour objet un perfectionnement apporté à l'emboutissage profond ou serré d'un objet grace auquel il est possible d'obtenir un objet embouti ne présentant pas de défaut. The present invention relates to an improvement made to deep or tight stamping of an object thanks to which it is possible to obtain a stamped object having no defect.

Selon l'invention, on réalise l'objet par emboutissage d'un matériau composite constitué de deux parois compactes réunies entre elles par une masse molle,
Lors de l'emboutissage m8me profond et serré, la masse molle absorbe les variations de longueur et s'écrase partiellement; elle permet, en outre, aux deux parois compactes de glisser l'une par rapport à l'autre. Il n'y a ainsi ni formation de plis, ni rupture de fibres. Extérieurement, L'objet embouti a pratiquement le méme aspect que s'il était réalisé à partir d'une plaque de matière compacte.According to the invention, the object is produced by stamping a composite material consisting of two compact walls joined together by a soft mass,
During deep and even deep drawing, the soft mass absorbs variations in length and partially crushes; it also allows the two compact walls to slide relative to each other. There is thus neither formation of folds, nor breaking of fibers. Externally, the stamped object has practically the same appearance as if it were produced from a plate of compact material.

Les parois compactes peuvent entre, par exemple, en papier, en carton, en matière plastique, en métal ou en bois. La matière molle peut entre constituée par une mousse, des fibres alvéolées ou cannelées ou encore par une matière agglomérée,
On a décrit ci-après, à titre d'exemple non limitatif deux modes de réalisation d'objets emboutis réalisés conformément à l'invention avec référence au dessin annexé dans lequel :
La Figure 1 est une vue en coupe d'un premier objet embouti.The compact walls can, for example, be made of paper, cardboard, plastic, metal or wood. The soft material can, for example, consist of a foam, cellular or fluted fibers or even an agglomerated material,
Two embodiments have been described below, by way of nonlimiting example, of stamped objects produced in accordance with the invention with reference to the appended drawing in which:
Figure 1 is a sectional view of a first stamped object.

La Figure 2 est une vue en coupe d'un second objet embouti
Tel qu'il est représenté à la Figure 1, l'objet est un bil don formé par emboutissage profond d'une plaque composite constituée de deux parois compactes la et lb séparées l'une de l'autre par une matière molle 2.Figure 2 is a sectional view of a second stamped object
As shown in Figure 1, the object is a bil don formed by deep drawing of a composite plate consisting of two compact walls 1a and 1b separated from each other by a soft material 2.

La Figure 2 montre un couvercle coiffant avec une cuvette centrale qu'il est normalement très difficile de réaliser par et- boutissage, puisqu'il présente des parois courbes de faible rayon et un retournement de la matière sur 1800. Là encore, ce couvercle est formé par emboutissage d'une plaque composite formée de deux parois compactes 3a et 3b reliées l'une à l'autre par une matière molle 4. Figure 2 shows a cover cap with a central bowl which is normally very difficult to achieve by and -butting, since it has curved walls of small radius and an inversion of the material over 1800. Again, this cover is formed by stamping a composite plate formed by two compact walls 3a and 3b connected to each other by a soft material 4.

Il va de soi que la présente invention ne doit pas 8trie considérée comme limitée aux modes de réalisation décrits et représentés, mais en couvre, au contraire, toutes les variantes.  It goes without saying that the present invention should not be considered as limited to the embodiments described and shown, but on the contrary covers all variants thereof.

Claims (1)

REVEND ICAT ION  RESELL ICAT ION Perfectionnements apportés à l'emboutissage profond ou serré d'objets, caractérisé en ce qu'on réalise l'objet par emboutissage d'un matériau composite constitué de deux parois compactes réunies entre elles par une masse molle  Improvements in deep or tight drawing of objects, characterized in that the object is produced by stamping a composite material consisting of two compact walls joined together by a soft mass
FR7918890A 1979-07-17 1979-07-17 Use of soft laminate cores for forming solid sheet materials - to obtain deep drawn or complex shapes with smooth surfaces Withdrawn FR2461567A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7918890A FR2461567A1 (en) 1979-07-17 1979-07-17 Use of soft laminate cores for forming solid sheet materials - to obtain deep drawn or complex shapes with smooth surfaces

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7918890A FR2461567A1 (en) 1979-07-17 1979-07-17 Use of soft laminate cores for forming solid sheet materials - to obtain deep drawn or complex shapes with smooth surfaces

Publications (1)

Publication Number Publication Date
FR2461567A1 true FR2461567A1 (en) 1981-02-06

Family

ID=9228145

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7918890A Withdrawn FR2461567A1 (en) 1979-07-17 1979-07-17 Use of soft laminate cores for forming solid sheet materials - to obtain deep drawn or complex shapes with smooth surfaces

Country Status (1)

Country Link
FR (1) FR2461567A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3534021A1 (en) * 1984-09-24 1986-04-10 Société Nationale des Poudres et Explosifs, Paris METHOD FOR PRODUCING COMBUSTIBLE OBJECTS BY DEEP-DRAWING COMBUSTIBLE PAPER AND OBJECTS THEREFORE OBTAINED
US4826637A (en) * 1986-03-21 1989-05-02 Societe Nationale Des Poudres Et Explosifs Process for the manufacture of combustible articles by pressing combustible paper discs by means of a flexible punch

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1149958A (en) * 1956-04-19 1958-01-03 Advanced plastic packaging
FR1399307A (en) * 1963-07-02 1965-05-14 Haveg Industries Inc Foam plastic containers, for hot liquids
FR1414475A (en) * 1963-11-19 1965-10-15 Western Electric Co Process for manufacturing and shaping layered products
FR1426614A (en) * 1964-03-13 1966-01-28 Kalle Ag Method of manufacturing objects by suction in a mold from hardenable masses
FR1428344A (en) * 1964-03-21 1966-02-11 Dynamit Nobel Ag Manufacturing process for molded parts with fiberglass reinforcement, from a thermoplastic synthetic material, in particular cpv
FR1513418A (en) * 1965-12-15 1968-02-16 Method of forming without matrix of formed parts of large surface in synthetic resin reinforced with fibers and new products thus obtained
FR1594543A (en) * 1966-12-23 1970-06-08
FR2121551A1 (en) * 1971-01-05 1972-08-25 Mobil Oil Corp
FR2141563A1 (en) * 1971-06-16 1973-01-26 Cebal Gp
FR2186449A1 (en) * 1972-04-20 1974-01-11 Burmah Oil Trading Ltd Sound-proofing laminates - produced by vacuum moulding pre-laminated filled polymer film
FR2201671A5 (en) * 1972-09-29 1974-04-26 Dainippon Printing Co Ltd
FR2276171A1 (en) * 1974-06-28 1976-01-23 Ziristor Ab PACKAGING SHEET MATERIAL
FR2380133A1 (en) * 1977-02-10 1978-09-08 Voisin & Pascal Carton Thermally resistant fibre mouldings - with laminated construction including cellulosic sheets with thermoplastic binders and thermally reactive resin systems

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1149958A (en) * 1956-04-19 1958-01-03 Advanced plastic packaging
FR1399307A (en) * 1963-07-02 1965-05-14 Haveg Industries Inc Foam plastic containers, for hot liquids
FR1414475A (en) * 1963-11-19 1965-10-15 Western Electric Co Process for manufacturing and shaping layered products
FR1426614A (en) * 1964-03-13 1966-01-28 Kalle Ag Method of manufacturing objects by suction in a mold from hardenable masses
FR1428344A (en) * 1964-03-21 1966-02-11 Dynamit Nobel Ag Manufacturing process for molded parts with fiberglass reinforcement, from a thermoplastic synthetic material, in particular cpv
FR1513418A (en) * 1965-12-15 1968-02-16 Method of forming without matrix of formed parts of large surface in synthetic resin reinforced with fibers and new products thus obtained
FR1594543A (en) * 1966-12-23 1970-06-08
FR2121551A1 (en) * 1971-01-05 1972-08-25 Mobil Oil Corp
FR2141563A1 (en) * 1971-06-16 1973-01-26 Cebal Gp
FR2186449A1 (en) * 1972-04-20 1974-01-11 Burmah Oil Trading Ltd Sound-proofing laminates - produced by vacuum moulding pre-laminated filled polymer film
FR2201671A5 (en) * 1972-09-29 1974-04-26 Dainippon Printing Co Ltd
FR2276171A1 (en) * 1974-06-28 1976-01-23 Ziristor Ab PACKAGING SHEET MATERIAL
FR2380133A1 (en) * 1977-02-10 1978-09-08 Voisin & Pascal Carton Thermally resistant fibre mouldings - with laminated construction including cellulosic sheets with thermoplastic binders and thermally reactive resin systems

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3534021A1 (en) * 1984-09-24 1986-04-10 Société Nationale des Poudres et Explosifs, Paris METHOD FOR PRODUCING COMBUSTIBLE OBJECTS BY DEEP-DRAWING COMBUSTIBLE PAPER AND OBJECTS THEREFORE OBTAINED
US4705655A (en) * 1984-09-24 1987-11-10 Societe Nationale Des Poudres Et Explosifs Process for the manufacture of combustible articles by embossing combustible paper and combustible articles thus produced
DE3534021C2 (en) * 1984-09-24 1988-12-08 Societe Nationale Des Poudres Et Explosifs, Paris, Fr
US4826637A (en) * 1986-03-21 1989-05-02 Societe Nationale Des Poudres Et Explosifs Process for the manufacture of combustible articles by pressing combustible paper discs by means of a flexible punch

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