FR2873614A1 - Molding process for plastic plate with cells used for surgical instruments uses plate with flat base placed over mold and thermoformed - Google Patents
Molding process for plastic plate with cells used for surgical instruments uses plate with flat base placed over mold and thermoformed Download PDFInfo
- Publication number
- FR2873614A1 FR2873614A1 FR0408483A FR0408483A FR2873614A1 FR 2873614 A1 FR2873614 A1 FR 2873614A1 FR 0408483 A FR0408483 A FR 0408483A FR 0408483 A FR0408483 A FR 0408483A FR 2873614 A1 FR2873614 A1 FR 2873614A1
- Authority
- FR
- France
- Prior art keywords
- thermoforming
- plate
- return
- thermoformed
- central portion
- 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
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- 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
- B29C51/02—Combined thermoforming and manufacture of the preform
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- 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
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0045—Perforating
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2016/00—Articles with corrugations or pleats
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7134—Crates, e.g. for bottles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/753—Medical equipment; Accessories therefor
- B29L2031/7546—Surgical equipment
Abstract
Description
La présente invention concerne un procédé de moulage d'un plateau àThe present invention relates to a method of molding a tray to
alvéoles par thermoformage et une plaque à thermoformer utilisable par ce procédé. thermoforming cells and a thermoforming plate that can be used by this process.
II est connu d'utiliser des plateaux à alvéoles pour le rangement, le transport et la stérilisation des instruments de chirurgie. It is known to use tray trays for storage, transport and sterilization of surgical instruments.
La figure 1A montre une ébauche 1 d'un tel plateau en coupe, obtenue par thermoformage au moyen du moule 2 montré, également en coupe, par la figure I B. L'ébauche de plateau 1 comprend des alvéoles 3 adaptées aux instruments chirurgicaux, qui sont percées de trous 4 pour le passage de la vapeur de stérilisation, et un retour extérieur périphérique 5 prolongé vers l'extérieur par un débord 6. Le retour 5 forme une ceinture de rigidification du plateau et permet également de faciliter la préhension de celui-ci. Le débord 6 résulte du thermoformage et doit être éliminé pour l'obtention du plateau, par une opération de détourage opérée au niveau de la zone inférieure 5a de la paroi extérieure du retour 5. FIG. 1A shows a blank 1 of such a plate in section, obtained by thermoforming by means of the mold 2 shown, also in section, in FIG. 1B. The tray blank 1 comprises cells 3 adapted to the surgical instruments, which are pierced with holes 4 for the passage of sterilization steam, and a peripheral outward return 5 extended outwardly by an overflow 6. The return 5 forms a stiffening belt of the tray and also makes it easier to grip the tray. -this. The overflow 6 results from the thermoforming and must be eliminated to obtain the plate, by a cutting operation operated at the lower zone 5a of the outer wall of the return 5.
Cette opération de détourage a pour inconvénient de former un rebord relativement acéré au niveau de ladite zone inférieure 5a, qu'il est nécessaire d'adoucir par une opération subséquente pour casser l'angle, réalisée manuellement. This clipping operation has the disadvantage of forming a relatively sharp edge at said lower zone 5a, which it is necessary to soften by a subsequent operation to break the angle, performed manually.
Le moule 2, qui peut être en positif ou en négatif, comprend quant à lui une forme correspondant à la forme du plateau à réaliser, des trous 7 d'aspiration de la plaque à thermoformer, ainsi qu'une nervure périphérique 8 et une surface plane 9 extérieure à cette nervure 8. La nervure 8 et la surface 9 permettent respectivement l'aménagement du retour 5 et du débord 6. The mold 2, which may be positive or negative, comprises a form corresponding to the shape of the plate to be made, suction holes 7 of the thermoforming plate, and a peripheral rib 8 and a surface 9 of the rib 8 and the surface 9 respectively allow the arrangement of the return 5 and the overhang 6.
L'aménagement de la nervure 8 sur le moule 2 a pour inconvénient d'augmenter notablement le coût de fabrication de ce moule 2. The arrangement of the rib 8 on the mold 2 has the disadvantage of significantly increasing the manufacturing cost of the mold 2.
La présente invention vise à remédier à l'ensemble des inconvénients précités. The present invention aims to remedy all of the aforementioned drawbacks.
À cet effet, le procédé qu'elle concerne comprend les étapes consistant à : - aménager une plaque à thermoformer présentant une partie centrale destinée à être thermoformée et un retour périphérique arrondi faisant saillie sur l'extérieur de cette partie centrale, ce retour étant aménagé à la forme du retour que doit comprendre le plateau; - placer ladite plaque à thermoformer au-dessus du moule de 5 thermoformage, et - réaliser l'opération de thermoformage de la partie centrale de la plaque à thermoformer. For this purpose, the method it concerns comprises the steps of: - arranging a thermoforming plate having a central portion to be thermoformed and a rounded peripheral return protruding on the outside of this central portion, this return being arranged in the form of the return that the board must understand; placing said thermoforming plate above the thermoforming mold, and performing the thermoforming operation of the central part of the thermoforming plate.
Ainsi, ce n'est pas le moule qui aménage ladite ceinture de rigidification mais une opération de moulage préalable à l'opération de thermoformage. Thus, it is not the mold that arranges said stiffening belt but a molding operation prior to the thermoforming operation.
Le moule n'a donc pas besoin de comprendre une nervure périphérique destinée à aménager cette ceinture de rigidification lors du thermoformage. The mold does not need to understand a peripheral rib for arranging the stiffening belt during thermoforming.
Le retour peut être aménagé directement à sa forme définitive, supprimant ainsi les opérations de détourage et la nécessité de casser l'angle précité, et la présence de ce retour sur la plaque à thermoformer permet un maintien facilité du bord périphérique de cette plaque au moment de l'opération de thermoformage. La chute de matière que constitue le débord 6 selon la technique antérieure est par ailleurs supprimée. The return can be converted directly to its final form, thus eliminating clipping operations and the need to break the aforementioned angle, and the presence of this return on the thermoforming plate allows easy maintenance of the peripheral edge of this plate at the time of the thermoforming operation. The drop of material that is the overhang 6 according to the prior art is also removed.
Le procédé comprend avantageusement l'étape consistant à maintenir les bords de la plaque à thermoformer, lors de l'opération de thermoformage, 20 en prenant appui sur cette plaque au niveau dudit retour. The method advantageously comprises the step of maintaining the edges of the thermoforming plate, during the thermoforming operation, by bearing on this plate at said return.
Le retour est avantageusement aménagé de manière à présenter une structure renforcée, lui permettant de supporter dans les meilleures conditions le maintien qu'il subit au cours de l'opération de thermoformage. Ce retour peut notamment être plus épais qu'un retour selon la technique antérieure, et/ou présenter des nervures transversales de renforcement. The return is advantageously arranged so as to have a reinforced structure, allowing it to withstand in the best conditions the maintenance it undergoes during the thermoforming operation. This return may in particular be thicker than a return according to the prior art, and / or have transverse reinforcing ribs.
La plaque à thermoformer est avantageusement moulée par injection. The thermoforming plate is advantageously injection molded.
L'invention concerne également la plaque à thermoformer utilisable pour la mise en oeuvre du procédé précité, cette plaque présentant une partie centrale destinée à être thermoformée et un retour périphérique arrondi faisant saillie sur l'extérieur de cette partie centrale, ce retour étant aménagé à la forme du retour que doit comprendre le plateau à obtenir. The invention also relates to the thermoforming plate that can be used for carrying out the aforementioned method, this plate having a central part intended to be thermoformed and a rounded peripheral return protruding on the outside of this central part, this return being arranged in FIG. the form of the return that must be understood by the plateau to be obtained.
La partie centrale de cette plaque peut-être réalisée en différentes épaisseurs adaptées à la formation des alvéoles à réaliser. The central portion of this plate may be made in different thicknesses adapted to the formation of the cells to be produced.
L'invention sera bien comprise, et d'autres caractéristiques et avantages de celle-ci apparaîtront, en référence au dessin schématique annexé, représentant, à titre d'exemple non limitatif, une forme de réalisation préférée de la plaque à thermoformer qu'elle concerne. The invention will be better understood, and other features and advantages thereof will become apparent, with reference to the attached schematic drawing, showing, by way of non-limiting example, a preferred embodiment of the thermoforming plate that it concerned.
La figure 2 est une vue en coupe de cette plaque à thermoformer, et La figure 3 est une vue de cette plaque similaire à la figure 2, positionnée au dessus du moule destiné à réaliser le thermoformage. Figure 2 is a sectional view of this plate thermoforming, and Figure 3 is a view of this plate similar to Figure 2, positioned above the mold for performing the thermoforming.
La plaque 10 à thermoformer présente une partie centrale plane 11 destinée à être thermoformée et un retour périphérique arrondi 12 faisant saillie sur l'extérieur de cette partie centrale 11, ce retour 12 étant aménagé à la forme du retour que doit comprendre le plateau que la plaque 10 permet d'obtenir suite à l'opération de thermoformage. The plate 10 to be thermoformed has a flat central portion 11 intended to be thermoformed and a rounded peripheral return 12 protruding from the outside of this central portion 11, this return 12 being arranged in the shape of the return that must comprise the plate that the Plate 10 makes it possible to obtain following the thermoforming operation.
Le retour 12 peut-être plus épais que le retour 5 selon la technique antérieure, de manière à présenter une structure renforcée lui permettant de supporter dans les meilleures conditions le maintien qu'il subit au cours de l'opération de thermoformage. The return 12 may be thicker than the return 5 according to the prior art, so as to have a reinforced structure allowing it to withstand in the best conditions the maintenance it undergoes during the thermoforming operation.
Comme le montre la figure 3, la plaque 10 est dimensionnée de telle sorte que le retour 12 s'étende au-delà de la cavité de thermoformage du moule de thermoformage 20. Ce retour peut ainsi être maintenu lors de l'opération de thermoformage par des moyens de matière appropriés. As shown in FIG. 3, the plate 10 is dimensioned so that the return 12 extends beyond the thermoforming cavity of the thermoforming mold 20. This return can thus be maintained during the thermoforming operation. appropriate material means.
Comme cela apparaît de ce qui précède, l'invention fournit un procédé et une plaque 10 à thermoformer permettant d'aménager le retour 12 directement à sa forme définitive, ce qui permet de supprimer les opérations de détourage et de meulage au niveau du bord extérieur du retour 12, de supprimer la chute de matière que constitue le débord 6 selon la technique antérieure, et d'utiliser un moule de structure plus facile à fabriquer qu'un moule 2 selon la technique antérieure. As can be seen from the foregoing, the invention provides a method and a thermoforming plate 10 for arranging the return 12 directly to its final shape, thereby eliminating clipping and grinding operations at the outer edge. the return 12, to remove the material drop that constitutes the overflow 6 according to the prior art, and to use a structural mold easier to manufacture than a mold 2 according to the prior art.
Il va de soi que l'invention n'est pas limitée à la forme de réalisation décrite ci-dessus à titre d'exemple mais qu'elle s'étend à toutes les formes de réalisations couvertes par les revendications ci-annexées. It goes without saying that the invention is not limited to the embodiment described above by way of example but that it extends to all embodiments covered by the appended claims.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0408483A FR2873614B1 (en) | 2004-07-30 | 2004-07-30 | METHOD FOR MOLDING A THERMOFORMING BOARD WITH THERMOFORMING PLATE AND A THERMOFORMER PLATE USABLE THEREBY |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0408483A FR2873614B1 (en) | 2004-07-30 | 2004-07-30 | METHOD FOR MOLDING A THERMOFORMING BOARD WITH THERMOFORMING PLATE AND A THERMOFORMER PLATE USABLE THEREBY |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2873614A1 true FR2873614A1 (en) | 2006-02-03 |
FR2873614B1 FR2873614B1 (en) | 2008-06-20 |
Family
ID=34949596
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR0408483A Expired - Fee Related FR2873614B1 (en) | 2004-07-30 | 2004-07-30 | METHOD FOR MOLDING A THERMOFORMING BOARD WITH THERMOFORMING PLATE AND A THERMOFORMER PLATE USABLE THEREBY |
Country Status (1)
Country | Link |
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FR (1) | FR2873614B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1987943A1 (en) * | 2007-05-02 | 2008-11-05 | Thermal Cyclic Technologies TCTech i Stockholm AB | Method and system for producing a three-dimensional article |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3471896A (en) * | 1966-09-06 | 1969-10-14 | Owens Illinois Inc | Apparatus for forming plastic articles |
US3602946A (en) * | 1968-03-07 | 1971-09-07 | Hoffco Sa | Apparatus for heat-shaping thin-walled containers of plastics material |
US3634182A (en) * | 1967-03-16 | 1972-01-11 | Owens Illinois Inc | Preformed plastic blank for making open mouth plastic containers |
US4005164A (en) * | 1973-01-12 | 1977-01-25 | Hayssen Manufacturing Co. | Method of making plastic containers |
DE3115883A1 (en) * | 1980-04-21 | 1982-03-04 | Vittorio Codroipo Pordenone Salvadori | Process for producing products from thermoplastic material and device for carrying out the process |
-
2004
- 2004-07-30 FR FR0408483A patent/FR2873614B1/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3471896A (en) * | 1966-09-06 | 1969-10-14 | Owens Illinois Inc | Apparatus for forming plastic articles |
US3634182A (en) * | 1967-03-16 | 1972-01-11 | Owens Illinois Inc | Preformed plastic blank for making open mouth plastic containers |
US3602946A (en) * | 1968-03-07 | 1971-09-07 | Hoffco Sa | Apparatus for heat-shaping thin-walled containers of plastics material |
US4005164A (en) * | 1973-01-12 | 1977-01-25 | Hayssen Manufacturing Co. | Method of making plastic containers |
DE3115883A1 (en) * | 1980-04-21 | 1982-03-04 | Vittorio Codroipo Pordenone Salvadori | Process for producing products from thermoplastic material and device for carrying out the process |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1987943A1 (en) * | 2007-05-02 | 2008-11-05 | Thermal Cyclic Technologies TCTech i Stockholm AB | Method and system for producing a three-dimensional article |
WO2008135504A1 (en) * | 2007-05-02 | 2008-11-13 | Thermal Cyclic Technologies Tctech I Stockholm Ab | Method and system for producing a three-dimensional article |
Also Published As
Publication number | Publication date |
---|---|
FR2873614B1 (en) | 2008-06-20 |
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TP | Transmission of property | ||
ST | Notification of lapse |
Effective date: 20120330 |