FR2738522A1 - Thermo:forming thermoplastic sheets on porous mould - Google Patents
Thermo:forming thermoplastic sheets on porous mould Download PDFInfo
- Publication number
- FR2738522A1 FR2738522A1 FR9510881A FR9510881A FR2738522A1 FR 2738522 A1 FR2738522 A1 FR 2738522A1 FR 9510881 A FR9510881 A FR 9510881A FR 9510881 A FR9510881 A FR 9510881A FR 2738522 A1 FR2738522 A1 FR 2738522A1
- Authority
- FR
- France
- Prior art keywords
- porous
- mold
- thermoforming
- parts
- lost
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/36—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article
- B28B7/364—Linings or coatings, e.g. removable, absorbent linings, permanent anti-stick coatings; Linings becoming a non-permanent layer of the moulded article of plastic material or rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
- B28B7/346—Manufacture of moulds
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/3814—Porous moulds
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
- B29C33/40—Plastics, e.g. foam or rubber
-
- 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
- B29C51/16—Lining or labelling
-
- 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
- B29C51/26—Component parts, details or accessories; Auxiliary operations
- B29C51/30—Moulds
- B29C51/36—Moulds specially adapted for vacuum forming, Manufacture thereof
- B29C51/365—Porous moulds
-
- 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
- B29C2791/00—Shaping characteristics in general
- B29C2791/004—Shaping under special conditions
- B29C2791/006—Using vacuum
-
- 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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/0011—Moulds or cores; Details thereof or accessories therefor thin-walled moulds
- B29C33/0016—Lost moulds, e.g. staying on the moulded object
-
- 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
- B29C51/10—Forming by pressure difference, e.g. vacuum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
Description
PROCEDE DE THERMOFORMAGE SUR MOULE POREUX
PERDU
DESCRIPTION
La présente invention concerne un nouveau procédé de
thermoformage d'une mince feuille thermoplastique sur un
moule de thermoformage poreux perdu pour permettre a la
pièce en composite ainsi obtenue de mouler du béton,
d'être un élément décoratif, une pièce composite à
caractéristiques mécaniques renforcées.THERMOFORMING PROCESS ON POROUS MOLD
LOST
DESCRIPTION
The present invention relates to a new method of
thermoforming a thin thermoplastic sheet on a
lost porous thermoforming mold to allow the
composite part thus obtained from casting concrete,
to be a decorative element, a composite piece to
reinforced mechanical characteristics.
Cette invention permet la fabrication:
- de moules pour béton structuré pour les
industries du bâtiment et des travaux publics;
- de pièces décoratives pour l'industrie du
bâtiment et des travaux publics;
- de pièces publicitaires, enseignes et affichage;
- de pièces composite par association d'une pièce
thermoformée avec une pièce en mousse dure donnant
de la rigidité.This invention allows the manufacture:
- molds for structured concrete for
building and public works industries;
- decorative pieces for the industry
building and public works;
- advertising pieces, signs and displays;
- of composite parts by association of a part
thermoformed with a piece of hard foam giving
rigidity.
La présente invention concerne un nouveau procédé de
thermoformage d'une mince feuille thermoplastique sur un
moule de thermoformage poreux perdu pour permettre a la
pièce en composite ainsi obtenue de mouler du béton,
d'être un élément décoratif, une pièce composite à
caractéristiques mécaniques renforcées.The present invention relates to a new method of
thermoforming a thin thermoplastic sheet on a
lost porous thermoforming mold to allow the
composite part thus obtained from casting concrete,
to be a decorative element, a composite piece to
reinforced mechanical characteristics.
Actuellement il existe des procédés notamment un qui est
décrit dans le brevet 8319270 de Mr Cruet Michel qui
indiquait un procédé de mise en oeuvre d'un moule
perdu(I).Currently there are processes including one which is
described in patent 8319270 of Mr Cruet Michel who
indicated a method of using a mold
lost (I).
Un autre procédé utilisant l'injection de polystyrène
expansé à la vapeur associée avec le thermoformage d'un
feuille thermoplastique en fond de moule avant
l'injection (II).Another process using polystyrene injection
expanded with steam associated with the thermoforming of a
thermoplastic sheet at the bottom of the front mold
injection (II).
La réalisation de béton structuré est traditionnellement
effectuée à l'aide de matrices en polyuréthanne moulé, en
mousse de polyuréthanne injectée, en polystyrène expansé injecté avec ou sans film de protection, en polystyrène expansé usiné protégé par un film ou un revêtement.The production of structured concrete is traditionally
made using molded polyurethane dies,
injected polyurethane foam, injected expanded polystyrene with or without protective film, machined expanded polystyrene protected by a film or coating.
L'utilisation de matrices à base de polyuréthanne est justifiée lors de nombreuses réutilisations.The use of polyurethane matrices is justified during numerous re-uses.
L'utilisation de matrices en polystyrène expansé par injection nécessite la réalisation d'un moule par type de structure ce qui par la dimension des pièces exige de grandes séries;
L'utilisation de matrices en polystyrène expansé usiné avec ou sans revêtement donne au béton des aspects de surface irréguliers et granuleux difficilement acceptable car retenant les poussières et les saletés.The use of injection-molded polystyrene matrices requires the production of a mold for each type of structure, which by the size of the parts requires large series;
The use of molded expanded polystyrene matrices with or without coating gives the concrete irregular and grainy surface aspects that are difficult to accept because it retains dust and dirt.
Ces procédés ont l'inconvénient de ne pas permettre une dépouille nulle ou même une dépouille inversée et donc nécessite une dépouille pour le démoulage, n'autorise pas de contre dépouille, et nécessite l'utilisation d'un modèle (I) ou d'un moule métallique (II).These methods have the disadvantage of not allowing a zero draft or even an inverted draft and therefore requires a draft for demolding, does not allow an undercut, and requires the use of a model (I) or of a metal mold (II).
De part la fabrication d'outillage, ces procédés sont utilisés pour des grandes séries industrielles et ne permettent pas de s'adapter au marché dirigé vers des pièces unitaires ou de petites séries dans des délais très courts.Due to the manufacture of tools, these processes are used for large industrial series and do not make it possible to adapt to the market directed towards unit parts or small series within very short periods.
La présente invention a pour objet principal un nouveau procédé de fabrication de moules notamment pour le béton en vue de réalisation de matrices pour béton structurés.The main object of the present invention is a new process for manufacturing molds, in particular for concrete, with a view to producing dies for structured concrete.
La présente invention à pour but secondaire de permettre la réalisation de pièces
- de décoration pour les industries du bâtiment et
des travaux publics;
- de pièces publicitaires;
- de pièces pour l'affichage;
- de pièces composites.The present invention has the secondary aim of allowing the production of parts
- decoration for the building industries and
public works;
- advertising pieces;
- parts for display;
- composite parts.
Le procédé se caractérise en ce que l'on réalise la partie moulante 1 par thermoformage à partir d'une matière thermoplastique en chauffant cette dernière jusqu'à sa température de ramollissement, en appliquant une mince couche de la matière thermoplastique ainsi ramollie sur le moule de thermoformage poreux perdu 2, en appliquant un vide relatif pour qu'elle épouse tout ou partie de la forme de celui-ci,le vide étant réalisé à travers le moule poreux perdu, pris en laissant revenir à sa consistance première la matière thermoplastique ayant pris la forme du moule poreux perdu 2, la pièce ainsi obtenu demande une découpe de finition, l'ensemble comprenant la feuille de matière plastique thermoformée et son moule poreux perdu ainsi fini constituant la pièce 3 objet du brevet.The method is characterized in that the molding part 1 is produced by thermoforming from a thermoplastic material by heating the latter to its softening temperature, by applying a thin layer of the thermoplastic material thus softened on the mold. of porous thermoforming lost 2, by applying a relative vacuum so that it matches all or part of the shape thereof, the vacuum being produced through the porous lost mold, taken by allowing the thermoplastic material having returned to its first consistency taken the form of the porous lost mold 2, the part thus obtained requires a finishing cut, the assembly comprising the thermoformed plastic sheet and its porous lost mold thus finished constituting the part 3 which is the subject of the patent.
L'invention a pour objet de remédier à ces inconvénients en ce qu'elle permet, à partir d'un moule de thermoformage perdu usiné dans des matières poreuses telle que le polystyrène expansé, la mousse de polyuréthanne expansé et tout autre type de mousses poreuses usinables ou non, avec des caractéristiques de tenue en température choisies pour résister aux contraintes de température lors du thermoformage, avec des formes diverses et variées, d'obtenir par thermoformage d'un feuille ou d'un film thermoplastique sur ce moule de thermoformage poreux perdu un matériau composite qui associe à la surface extérieure d'un matériau barrière lisse, la résistance mécanique du matériau poreux choisi.The object of the invention is to remedy these drawbacks in that it allows, from a lost thermoforming mold machined in porous materials such as expanded polystyrene, expanded polyurethane foam and any other type of porous foam. machinable or not, with characteristics of temperature resistance chosen to resist the temperature constraints during thermoforming, with various and varied forms, to obtain by thermoforming a sheet or a thermoplastic film on this porous thermoforming mold lost a composite material which combines with the outer surface of a smooth barrier material, the mechanical resistance of the chosen porous material.
On a remarqué de façon surprenante que la combinaison feuille ou film thermoplastique et moule poreux perdu permettait d'obtenir pour toutes sortes de matériaux moulable sur moule thermoformé un état de surface exceptionnel et particulièrement lisse et sans retassures.It was surprisingly noticed that the combination of sheet or thermoplastic film and lost porous mold made it possible to obtain, for all kinds of materials moldable on a thermoformed mold, an exceptional surface condition that was particularly smooth and without shrinkage.
La feuille ou le film thermoplastique rapportée sur le fond du moule favorise de façon importante l'opération de démoulage des bétons en raison de l'absence d'adhérence et ne nécessite donc pas l'utilisation de produits de démoulage. The sheet or the thermoplastic film attached to the bottom of the mold significantly promotes the demolding operation of concrete due to the lack of adhesion and therefore does not require the use of demolding products.
L'utilisation de matière poreuse permet une mise en oeuvre plus facile en ce qu'elle favorise l'aspiration de l'air à travers la matière et ne nécessite pas le percement d'orifice lors de la mise sous vide.The use of porous material allows easier implementation in that it promotes the suction of air through the material and does not require the drilling of orifice during vacuuming.
Les autres avantages de ce procédé sont:
- gain de matière première;
- rapidité de mise en oeuvre;
- combinaison de techniques éprouvées;
- facilité de mise en oeuvre;
- correspondance avec les besoins du marché;
- obtention de pièces sans dépouille de démoulage
et même avec une contre dépouille;
- résistance mécanique obtenue avec des produits
de base économiques.The other advantages of this process are:
- saving of raw material;
- speed of implementation;
- combination of proven techniques;
- ease of implementation;
- correspondence with market needs;
- obtaining parts without release mold
and even with an undercut;
- mechanical resistance obtained with products
basic economic.
La présente invention sera mieux comprise à la description détaillée du procédé pris a titre d'exemple non limitatif et illustré par le dessin annexé figure 1 sur lequel- la figure est une vue en coupe représentant le moule de thermoformage poreux perdu et la feuille de matière thermoplastique en phase terminale du procédé.The present invention will be better understood from the detailed description of the process taken by way of nonlimiting example and illustrated by the appended drawing in FIG. 1 in which the figure is a sectional view representing the lost porous thermoforming mold and the sheet of material. thermoplastic in the terminal phase of the process.
- la figure 2 est une vue schématique d'un mode de réalisation d'une machine de thermoformage par aspiration avec pré-étirage mécanique d'une feuille thermoplastique, - la figure 3 représente la machine de thermoformage conforme à la figure 2, au moment de la phase de préétirage, - la figure 4 représente la machine de thermoformage conforme à la figure 2, au moment du thermoformage proprement dit.- Figure 2 is a schematic view of an embodiment of a vacuum thermoforming machine with mechanical pre-stretching of a thermoplastic sheet, - Figure 3 shows the thermoforming machine according to Figure 2, at the time of the pre-stretching phase, - Figure 4 shows the thermoforming machine according to Figure 2, at the time of the thermoforming itself.
Comme le montre la figure 2, la machine de thermoformage comprend de manière connue en soi, un plateau portemodèle 1 pourvu à sa périphérie d'un rebord 2 sur lequel est disposé un joint d'étanchéité 3.As shown in FIG. 2, the thermoforming machine comprises, in a manner known per se, a model carrier plate 1 provided at its periphery with a flange 2 on which a sealing gasket 3 is disposed.
Le moule poreux perdu 4 est positionné sur un plateau perforé 5, lequel est mis en place sur le plateau 1 , le plateau 1 définissant une chambre 6 reliée par un conduit 7 à un circuit de vide muni d'une vanne d'ouverture et de fermeture 8.L'ensemble ainsi conçu est par ailleurs dimensionné pour que le bord supérieur du modèle soit situé au-dessus du plan horizontal défini par le joint 3.The lost porous mold 4 is positioned on a perforated plate 5, which is placed on the plate 1, the plate 1 defining a chamber 6 connected by a conduit 7 to a vacuum circuit provided with an opening valve and closure 8.The assembly thus designed is also dimensioned so that the upper edge of the model is located above the horizontal plane defined by the joint 3.
Un film ou une feuille 10 en matière thermoplastique telle que polystyrène, polycarbonate, poly(chlorure de vinyle) etc...., mise en place dans un cadre serre-flan 11 est disposée au-dessus de la machine qui vient d'être décrite, des éléments chauffants 12, par exemple à résistances électriques, étant eux-mêmes disposés au dessus de la feuille 10. Enfin, le plateau porte-modèle 1 est solidaire d'une tige 13 apte à être déplacée verticalement au moyen d'un vérin 14.A film or sheet 10 of thermoplastic material such as polystyrene, polycarbonate, poly (vinyl chloride), etc., placed in a blank holder frame 11 is placed above the machine which has just been described, heating elements 12, for example with electrical resistances, being themselves arranged above the sheet 10. Finally, the model-holding plate 1 is integral with a rod 13 able to be moved vertically by means of a cylinder 14.
La vanne 8 étant en position de fermeture et la feuille 10 étant amenée à sa température de ramollissement, on élève le plateau porte- modèle 1 au moyen du vérin 14 de manière à réaliser le pré-étirage de ladite feuille (figure 3). On établit alors le vide dans la chambre 6 en ouvrant la vanne 8, à la suite de quoi la feuille 10 ramollie vient s'appliquer sur le moule poreux perdu 4, le vide passant a travers la matière poreuse sans qu'il soit nécessaire d'effectuer des trous pour le passage du vide, tout au plus peut-on mettre des chicanes sous le plateau 5 pour répartir et favoriser la progression du vide en certain endroits plus qu'en certains autres suivant le but recherché et épouser la forme du moule poreux perdu (figure 4). On refroidit alors la feuille thermoformée (par exemple par soufflage d'air froid), ouvre le cadre serre-flan 11 pour libérer la pièce ainsi dite feuille thermoformée, ferme la vanne 8 et ramène le plateau porte-modèle 1 à sa position première au moyen du vérin 14, on récupère l'ensemble associé composé de la feuille de matière thermoformable thermoformée sur le moule poreux perdu appelé ensemble composite, la machine étant alors prête pour une nouvelle utilisation.The valve 8 being in the closed position and the sheet 10 being brought to its softening temperature, the model carrier plate 1 is raised by means of the jack 14 so as to pre-stretch said sheet (FIG. 3). The vacuum is then established in the chamber 6 by opening the valve 8, after which the softened sheet 10 is applied to the lost porous mold 4, the vacuum passing through the porous material without it being necessary to '' make holes for the passage of the vacuum, at most we can put baffles under the plate 5 to distribute and promote the progression of the vacuum in some places more than in others depending on the desired goal and match the shape of the mold porous lost (Figure 4). The thermoformed sheet is then cooled (for example by blowing cold air), opens the blank holder frame 11 to release the part thus called thermoformed sheet, closes the valve 8 and returns the model carrier plate 1 to its first position at by means of the jack 14, the associated assembly is recovered, composed of the sheet of thermoformable material thermoformed on the porous lost mold called the composite assembly, the machine then being ready for a new use.
Après une découpe de finition, l'ensemble composite ainsi obtenu constitue soit un moule à partir duquel va ensuite être fabriqué l'objet à mouler, soit une pièce décorative, soit des pièces publicitaires, enseignes d'affichage, soit une pièce mécanique à caractéristiques mécaniques renforcées.After a finishing cut, the composite assembly thus obtained constitutes either a mold from which the object to be molded is then made, or a decorative piece, or advertising pieces, display signs, or a mechanical piece with characteristics reinforced mechanics.
Le résultat obtenu dépendra évidemment de l'épaisseur de la feuille en matière thermoplastique, de sa nature ainsi que la matière du moule poreux perdu qui sera choisie pour résister à la température du thermoformage.The result obtained will obviously depend on the thickness of the sheet of thermoplastic material, on its nature as well as the material of the lost porous mold which will be chosen to resist the temperature of thermoforming.
L'ensemble ainsi fini constituant la pièce 3 (fig 1) objet du brevet. The assembly thus finished constituting the part 3 (fig 1) which is the subject of the patent.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9510881A FR2738522B1 (en) | 1995-09-12 | 1995-09-12 | THERMOFORMING PROCESS ON LOST POROUS MOLD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9510881A FR2738522B1 (en) | 1995-09-12 | 1995-09-12 | THERMOFORMING PROCESS ON LOST POROUS MOLD |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2738522A1 true FR2738522A1 (en) | 1997-03-14 |
| FR2738522B1 FR2738522B1 (en) | 1997-10-31 |
Family
ID=9482627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR9510881A Expired - Fee Related FR2738522B1 (en) | 1995-09-12 | 1995-09-12 | THERMOFORMING PROCESS ON LOST POROUS MOLD |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2738522B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999062683A1 (en) * | 1998-05-29 | 1999-12-09 | Unilever Plc | Hybrid stamping die |
| ITUA20161637A1 (en) * | 2016-03-14 | 2017-09-14 | Milano Politecnico | METHOD FOR THE QUICK MANUFACTURE OF MOLDS |
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|---|---|---|---|---|
| DE2203984A1 (en) * | 1972-01-28 | 1973-08-02 | Hilmar Herzog | Plastic film covered synthetic foam panels - by heat sealing the film to the foam |
| DE2404599A1 (en) * | 1974-01-31 | 1975-08-14 | 4 P Folie Forchheim Gmbh | Plastic faced foam with new finish - by applying preheated thick film to foam core |
| FR2456854A1 (en) * | 1979-05-18 | 1980-12-12 | Nissan Motor | MEMBER, SUCH AS AN ENGINE COVER, NEAR THE MOTOR OF A MOTOR VEHICLE, AND MANUFACTURING METHOD |
| US4880680A (en) * | 1988-05-23 | 1989-11-14 | Sota Technology, Inc. | Article of manufacture and method for encasing same |
| US5201981A (en) * | 1991-08-16 | 1993-04-13 | Citadel Architectural Products, Inc. | Method of forming synthetic plastic film-projected building siding |
| WO1995023682A1 (en) * | 1994-03-04 | 1995-09-08 | Armacel Pty Ltd | A method and apparatus for forming structural articles |
-
1995
- 1995-09-12 FR FR9510881A patent/FR2738522B1/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2203984A1 (en) * | 1972-01-28 | 1973-08-02 | Hilmar Herzog | Plastic film covered synthetic foam panels - by heat sealing the film to the foam |
| DE2404599A1 (en) * | 1974-01-31 | 1975-08-14 | 4 P Folie Forchheim Gmbh | Plastic faced foam with new finish - by applying preheated thick film to foam core |
| FR2456854A1 (en) * | 1979-05-18 | 1980-12-12 | Nissan Motor | MEMBER, SUCH AS AN ENGINE COVER, NEAR THE MOTOR OF A MOTOR VEHICLE, AND MANUFACTURING METHOD |
| US4880680A (en) * | 1988-05-23 | 1989-11-14 | Sota Technology, Inc. | Article of manufacture and method for encasing same |
| US5201981A (en) * | 1991-08-16 | 1993-04-13 | Citadel Architectural Products, Inc. | Method of forming synthetic plastic film-projected building siding |
| WO1995023682A1 (en) * | 1994-03-04 | 1995-09-08 | Armacel Pty Ltd | A method and apparatus for forming structural articles |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999062683A1 (en) * | 1998-05-29 | 1999-12-09 | Unilever Plc | Hybrid stamping die |
| US6283744B1 (en) | 1998-05-29 | 2001-09-04 | Unilever Home & Personal Care Usa, Division Of Conopco | Hybrid soap stamping bars |
| ITUA20161637A1 (en) * | 2016-03-14 | 2017-09-14 | Milano Politecnico | METHOD FOR THE QUICK MANUFACTURE OF MOLDS |
| WO2017158503A1 (en) * | 2016-03-14 | 2017-09-21 | Politecnico Di Milano | Method for fast production of moulds |
| CN108778658A (en) * | 2016-03-14 | 2018-11-09 | 米兰综合工科大学 | The method of quick production mould |
| CN108778658B (en) * | 2016-03-14 | 2020-11-17 | 米兰综合工科大学 | Method for quickly producing die |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2738522B1 (en) | 1997-10-31 |
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| ST | Notification of lapse | ||
| RN | Application for restoration | ||
| FC | Decision of inpi director general to approve request for restoration | ||
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| FC | Decision of inpi director general to approve request for restoration | ||
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Effective date: 20060531 |