EP0760645A1 - Tetine - Google Patents

Tetine

Info

Publication number
EP0760645A1
EP0760645A1 EP95919324A EP95919324A EP0760645A1 EP 0760645 A1 EP0760645 A1 EP 0760645A1 EP 95919324 A EP95919324 A EP 95919324A EP 95919324 A EP95919324 A EP 95919324A EP 0760645 A1 EP0760645 A1 EP 0760645A1
Authority
EP
European Patent Office
Prior art keywords
signal strip
suction
mold
silicone rubber
strip
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.)
Ceased
Application number
EP95919324A
Other languages
German (de)
English (en)
Inventor
Hartwig Görgens
Alexandra Gentner
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.)
Continua Kunststoffverarbeitung & Co KG GmbH
Original Assignee
Continua Kunststoffverarbeitung & Co KG GmbH
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
Priority claimed from DE4418604A external-priority patent/DE4418604A1/de
Application filed by Continua Kunststoffverarbeitung & Co KG GmbH filed Critical Continua Kunststoffverarbeitung & Co KG GmbH
Publication of EP0760645A1 publication Critical patent/EP0760645A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61J—CONTAINERS SPECIALLY ADAPTED FOR MEDICAL OR PHARMACEUTICAL PURPOSES; DEVICES OR METHODS SPECIALLY ADAPTED FOR BRINGING PHARMACEUTICAL PRODUCTS INTO PARTICULAR PHYSICAL OR ADMINISTERING FORMS; DEVICES FOR ADMINISTERING FOOD OR MEDICINES ORALLY; BABY COMFORTERS; DEVICES FOR RECEIVING SPITTLE
    • A61J11/00—Teats
    • A61J11/0035—Teats having particular shape or structure
    • A61J11/0065—Teats having particular shape or structure for improving rigidity, e.g. anti-bite-through or anti-collapsing
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/14—Dipping a core
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/20—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. moulding inserts or for coating articles
    • 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
    • B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
    • B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
    • B29C41/22—Making multilayered or multicoloured articles
    • 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
    • B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2083/00—Use of polymers having silicon, with or without sulfur, nitrogen, oxygen, or carbon only, in the main chain, as moulding material
    • B29K2083/005—LSR, i.e. liquid silicone rubbers, or derivatives thereof

Definitions

  • the invention relates to a teat with a mouthpiece according to claim 1, and to methods for its production according to claims 6, 7 and 15.
  • Conventional suction cups are generally hat-shaped parts made of a soft material.
  • Such suction devices have a suction section and a fastening section - the fastening section being made of the same material and in one piece with the suction section.
  • the continuous interior space delimited by the fastening section and suction section is open on the side of the fastening section; when the suction device is used on a milk bottle, an opening is also provided in the vicinity of the free end of the suction section.
  • the fastening section is designed as a flange, which can be fastened to a bottle neck with a union nut.
  • Such conventional suction cups are manufactured by injection molding.
  • the plastic In the injection molding process, the plastic is injected into a cavity, the contour of which corresponds to the later outer contour of the object, under pressure into the cavity remaining between the core and the wall of the mold until it is completely filled.
  • Conventional suction cups are also made from silicone rubber.
  • the manufacturing process differs from the previously described thermal injection molding process in that the suction material is not melted before it is injected into the injection mold.
  • a liquid rubber technology Liquid Silicon Rubber
  • the injection mold can be used for this purpose be heated or cooled in accordance with the selected silicone rubber materials in order to accelerate the curing process.
  • Natural rubber teats are usually manufactured in a dipping process.
  • a body corresponding in shape to the subsequent sucker is immersed several times in a latex dispersion.
  • Rubber layers are deposited on the body during each dipping process.
  • the rubber layers are dried between the individual dipping processes. If a sufficient layer thickness is applied to the body in this way, the deposited rubber is stabilized in a hot air vulcanization. During vulcanization, the individual rubber layers bond with one another, so that a suction cup of the same material is created.
  • FIG. 2 is discussed in advance, in which a conventional vacuum cleaner is shown.
  • a suction device 1 according to the prior art has a fastening section 2 and a suction section 4, which are made in one piece and of the same material.
  • the sucker 1 shown in Fig. 2 is by a union nut ter (not shown) held on a bottle neck (not shown).
  • the flange-shaped fastening section 2 is pressed against the bottle neck by the screw connection.
  • the elastic nipple material also serves as a seal for the connection between the bottle neck and nipple, the elastic flange 2 replacing a flat seal.
  • the teeth of the user hold the teat in use on the constriction of the teat between the fastening section 2 and the suction section 4. This area is exposed to the teeth, usually even at the same point on the suction cup, and is therefore particularly stressed.
  • German utility model G 92 13 576.5 which has a mouthpiece made of soft material and a carrier made of hard material molded onto it, the proposed suction unit being one that differs from the carrier in the longitudinal direction of the Has mouthpiece extending, over its free end extending back to the carrier security strip, which is made of the same material with the carrier.
  • the security strip made of the hard carrier material is intended to prevent the mouthpiece from biting off.
  • the soft material of the mouthpiece and the hard material of the wearer are cross-linked.
  • this suction cup has, in addition to hardening of the mouthpiece by the carrier, the disadvantage that complex tools are required for production.
  • DE-PS 41 33 004 proposes a suction device with a signal strip which is anchored with its end sections in the mouth plate of the suction device.
  • This variant has the disadvantage that it can only be used on pacifiers with a mouth plate, but cannot be used for bottle nipples, since they have no mouth plate. Furthermore, this variant has the disadvantage that the signal strip cannot always follow elastic deformations of the mouthpiece due to the anchoring in the mouthplate, so that the signal strip can be torn out.
  • the object of the invention is therefore to create a suction device with a mouthpiece with improved safety and simple methods for its production.
  • the suction device according to the invention has a flexible signal strip, which is arranged to follow the contour of the mouthpiece essentially in its longitudinal direction and is firmly connected to it in order to prevent the mouthpiece from biting off.
  • the term "longitudinal direction” also includes solutions in which the signal strip is spiral or only along a “longitudinal direction” section is provided. If the mouthpiece is accidentally bitten off, there is a risk that the bitten part will get into the throat of the user and hinder his breathing.
  • a part of the teat which is accidentally bitten off is reliably held by the signal strip on the remainder of the teat and can thus be removed from the throat of the user if necessary. Since the signal thread is embedded in the mouthpiece, it is not necessary to anchor it in a mouthplate, so that the nipple is widely used.
  • the teat according to the invention is suitable for use as a teat on milk bottles or the like, as well as for sleep or soothers.
  • the flexible signal strip is completely embedded in the suction material, so that the signal strip does not affect the surface properties of the suction device, in particular properties such as smoothness of the material, possibility of cleaning and physiological harmlessness.
  • the signal strip can also be designed in a network-like manner, so that the strip is crossed by bridges or webs made of suction material, and is therefore very firmly connected to the suction device.
  • the network-like structure of the signal strip can be produced by weaving or crocheting fibers or also by perforating a film strip. This net-like structure also exists in the case of a thread crocheted from individual threads, which preferably has an essentially round cross section. This cross-section makes it easier to insert the thread since there is no need to pay attention to twists.
  • the signal strip can be impregnated with an indicator which reacts to changes in moisture with a color change, so that even small cracks in the sucker surface are indicated by the color change.
  • the signal strip can also be used for color marking individual characteristics and areas of application of different types of suction cups.
  • the shape, the age group, or the food for which the particular teat is suitable can be represented by a color or color combination of the signal strip.
  • a combination of these properties can also be reproduced by a corresponding color combination of the signal strip.
  • the teat according to the invention can be produced in all shapes such as cherry shape, flat shape or orthodontic shape.
  • the signal strip can be made of a material whose elongation is less than the permissible elongation of the suction material, so that a vacuum cleaner that has been overstretched has a torn signal strip. This contributes to safety, since the torn off signal strip indicates that the suction pad has to be replaced in good time.
  • the suction cups can be made from natural rubber in a dipping process.
  • a teat shape is immersed in liquefied teat material which is deposited in layers on the teat shape.
  • the signal strip is preferably placed between the at least two dipping processes on the suction mold to be dipped, so that the signal strip is covered on both sides by a rubber layer.
  • the signal strip can also be applied before the first dive.
  • the signal strip can preferably be designed as a section of an endless belt running over the suction mold, or as a fixed insert which is pushed onto the suction mold.
  • the method according to the invention for producing a sucker is, according to claim 7, characterized in that the signal strip is inserted as an insert into the cavity of a mold which forms the sucker material.
  • the signal strip is attached to the suction device as a separate part or is introduced into the suction device.
  • the nipple is manufactured using the injection molding process, the actual injection molding process advantageously being divided into two sub-processes, in which the signal thread is first injected with plastic on the mold core of the injection molding form is determined and the actual shaping of the suction device takes place in a subsequent process.
  • the process is controlled in such a way that the plastic does not harden or only partially vulcanizes during the first sub-process, so that an intimate connection of the materials injected in the first sub-process and in the second sub-process can take place.
  • suction cups according to the invention which are made of silicone rubber
  • two components which vulcanize in the injection mold to the finished silicone rubber are preferably injected into the cavity of the injection mold in the process according to the invention.
  • the signal strip as a section of an endless band, is carried along by a core when the mold is closed and is thus introduced into the cavity.
  • a further method according to the invention is, according to claim 15, characterized in that the signal strip is coated or soaked with a fluid which at least partially cures in the injection mold before being introduced into the injection mold, around the strip for the subsequent injection process in the injection mold to hold.
  • the above method is particularly advantageous in the production of the silicone rubber teat according to the LSR injection molding method, wherein, according to claim 16, the signal strip is soaked with a vulcanizable mixture of the silicone rubber components before the strip is introduced into the mold and then onto the Core, which has a vulcanization temperature, so that the silicone chewed up by the signal strip vulcanized at least partially and thereby temporarily fixed on the core.
  • the signal strip is thus held in its position during the subsequent injection molding process and is not washed away or displaced by the subsequently injected silicone rubber, so that the signal strip is reliably enveloped by the suction material, a particularly intimate connection between the signal strip and the suction material is achieved and the desired smooth and liquid-tight surface of the suction is obtained.
  • the coating of the signal strip with the vulcanized silicone material contributes to this, the side of the signal strip facing the core being always covered by a layer of absorbent material due to the immersion and vulcanization process on the core.
  • connection between the suction material is not only mechanical, i.e. influenced by a correspondingly open fabric structure that can be penetrated well by the silicone material, but also by a suitable material pairing of suction material / signal strip material.
  • Material pairings with good wettability of the signal strip with the suction material are, for example, polyester / silicone rubber; Silicone coated glass fabric / silicone rubber; Cotton / silicone rubber and polyamide 66 / silicone rubber. The statements regarding the structure of the signal strip apply correspondingly to this method.
  • the strip can first pass through an immersion bath made of vulcanizable silicone rubber. Suitable scrapers can be provided at the outlet of the immersion bath, which remove excess silicone material from the signal strip or enable a uniform and smooth coating of the strip.
  • the finished suction cups remain lined up on the endless belt and are only then separated.
  • the shape can also be designed in such a way that the signal strip is cut off directly at the edge of the cavity by suitable cutting edges attached to the core or to the shape when the shape is closed.
  • the signal strip is inserted into the quay as an insert, for example by a handling device, before the injection mold is closed.
  • FIG. 1 shows a perspective view of an exemplary embodiment of a suction device according to the invention.
  • Fig. 2 shows a vacuum cleaner according to the prior art in a perspective view.
  • Fig. 3 shows a schematic sectional view of a core, on which a signal strip according to the invention is attached as an insert.
  • Fig. 4 shows a schematic representation of the entrainment of a signal strip present as an endless band through a core.
  • 5 shows a cavity with a signal strip inserted therein.
  • the suction device 1 shows a suction device 1 according to the invention with a suction section 4 and a fastening section 2, the function and design of which was described in detail in FIG. 2 when the prior art was considered, so that repetition is omitted here becomes.
  • the suction device 1 according to the invention has a signal strip 3 embedded in the suction material.
  • the signal strip 3 extends on one side of the suction pad 1 from its fastening section 2 over the tip of the suction pad to a point on the other side of the suction pad opposite the starting point of the signal strip 3. This ensures that the tapered area of the suction device 1 between the fastening section 2 and the suction section 4, which is particularly exposed to the risk of biting off, is bridged by the inserted signal strip 3 and is thus secured against detachment.
  • the material to be processed is injected into a cavity 10 until the cavity 10 remaining between a core 5 and a mold cavity 6 after the injection mold has closed is completely filled.
  • the signal strip 3 was introduced into the cavity 10 prior to the injection of the plastic.
  • Fig. 3 shows a core 5, on which a signal strip 3 is placed as an insert.
  • the signal strip 3 can for this purpose, be placed automatically or manually on the core by a handling device.
  • the core 5 is then introduced into a corresponding mold cavity (not shown).
  • the signal strip 3 can be shaped or provided with suitable spacers (not shown) in such a way that it is essentially spaced apart from the core 5 so that the subsequently injected plastic flows around the signal strip 3 on all sides, so that the signal strip 3 subsequently is embedded in the suction material.
  • the signal strip can also be spaced from the wall of the cavity by a suitable choice of the thermal expansion behavior of the strip material, so that the signal strip is also embedded in the suction material when the plastic is subsequently injected.
  • the receiving groove 20 serves as a partial receiving for the signal strip 3, which is pressed into the receiving groove 20 by hand or by a handling device from the insertion position shown in FIG. 3.
  • the actual molded part contour is then sprayed out in a further operation.
  • the same plastic, preferably silicone rubber, or different materials can be used for the two processes.
  • the signal strip 3 protrudes somewhat into the interior of the suction cup when the suction cup 1 is finished, but this does not interfere with practical use since the outside contour of the suction cup remains unchanged.
  • the signal strip 3 can be processed in a predetermined length or as an endless material (see the following explanations).
  • a multi-use tool is preferably used, which is designed as a displacement tool.
  • a tool has two mold nest blocks that can be alternately aligned with respect to the mold cores 5.
  • the cavities are designed such that the signal strip is only extrusion-coated in its circumferential section and is thereby fixed on the mold core 5.
  • silicone rubber is preferably used, the injection process being controlled in such a way that the material in the first mold block does not vulcanize, so that when the nipple is "ready-molded" an intimate connection of the materials injected one after the other can take place.
  • the embedding on the one hand achieves a firm connection of the signal strip 3 with the suction material, on the other hand the surface properties of the suction material are retained.
  • Fig. 4 shows an embodiment of the signal strip 3 as an endless band, which is arranged between a core 5 and a mold cavity 6.
  • the signal strip 3 is taken from the core 5 into the mold cavity 6.
  • the tape can also be inserted into the receiving groove 20 of the mandrel 5 by means of a suitable handling device.
  • mold cores 5 are arranged in a row arranged one above the other so that the endless belt is first arranged transversely over the row of mold cores and then can be applied simultaneously to all mold cores in the row via the handling device.
  • the signal strip 3 can be separated from the cutting devices 7 attached to the mold when the mold is closed.
  • the signal strip 3 which is formed here as a section of an endless belt and has been introduced into the cavity 10 remaining between the core 5 and the mold cavity 6 in accordance with the manner described with reference to FIG the cavity 10 before the plastic is injected into the cavity 10.
  • the material to be injected can be a thermally softened plastic that hardens in a cooling phase in cavity 10.
  • two or more components which vulcanize with each other in the cavity 10 can be used, as is the case, for example, when processing silicone rubber.
  • the signal strip can be impregnated with a vulcanizable mixture of components before being placed on the core, so that the component mixture in and on the strip when placed on the core there already vulcanized so that the strip adheres to the core in its desired position and is securely held during the subsequent injection process.
  • the finished suction cup can be removed from the mold by ejectors arranged in the injection mold, by hand Exercise facilities or by blowing out with compressed air.
  • the teat can either be held on the core or in the mold cavity after the mold has been opened, so that the introduction of a new insert and the removal of the finished vacuum cleaner can take place at the same time, as a result of which the unproductive tive intervals with open mold shortened, and thus the performance of the injection molding machine can be increased.
  • the finished suction device can also be removed by pulling on the signal strip 3 if this was not cut off by cutting devices 7 when the mold was closed. In this way, the suction device can be removed and the signal strip 3 can be repositioned between the core 5 and the mold cavity 6 in a common working step.
  • the suction devices lined up as an endless belt on the signal strip can then be separated, the Bundling of several suction devices up to the end consumer can be retained, so that counting processes and packaging can be saved.
  • a suction device with increased safety and simple methods for its production are described above.
  • the suction pad is traversed by a signal strip which is arranged to follow the contour of the suction pad in the longitudinal direction.
  • the signal strip holds a bitten-off part of the sucker on the rest of the suction device, so that the part that is bitten off cannot be accidentally swallowed.
  • the signal strip is inserted as an insert and embedded in the suction material, so that a firm connection between the signal strip and the suction device is achieved.
  • the signal strip is soaked with a vulcanizable mixture of the components before being introduced into the mold or being placed on the core, so that the material located on the strip vulcanizes out there and the signal strip in its position during the subsequent injection of the suction material Holds position.
  • the signal strip is produced by the injection molding process and is first inserted into a receiving groove of a mold core, then is fixed on the mold core by a molding process using liquid plastic or another fluid and only then is the mold core actual shape of the sucker takes place. In this way, the signal strip is reliably fixed on the mold core during the injection molding process, so that it cannot slip.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Abstract

L'invention concerne une tétine avec un bout qui présente une sécurité accrue, et un procédé de fabrication de la tétine. La tétine est traversée par une bande de signalisation qui suit le contour du bout dans le sens longitudinal. La bande de signalisation retient une partie arrachée de la tétine au reste de la tétine, de sorte que la partie arrachée ne puisse pas être avalée par mégarde.
EP95919324A 1994-05-27 1995-05-24 Tetine Ceased EP0760645A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4418604A DE4418604A1 (de) 1993-05-27 1994-05-27 Sauger
DE4418604 1994-05-27
PCT/DE1995/000680 WO1995032702A1 (fr) 1994-05-27 1995-05-24 Tetine

Publications (1)

Publication Number Publication Date
EP0760645A1 true EP0760645A1 (fr) 1997-03-12

Family

ID=6519165

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95919324A Ceased EP0760645A1 (fr) 1994-05-27 1995-05-24 Tetine

Country Status (2)

Country Link
EP (1) EP0760645A1 (fr)
WO (1) WO1995032702A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006022669A1 (de) * 2006-05-16 2007-11-22 Mapa Gmbh Gummi- Und Plastikwerke Beruhigungssauger
DE202006009531U1 (de) * 2006-05-16 2007-02-08 Mapa Gmbh Gummi- Und Plastikwerke Beruhigungssauger
DE102008011721B4 (de) 2008-02-28 2011-06-09 Mapa Gmbh Beruhigungssauger mit an einem Mundschild fixiertem Lutschteil
US9913780B2 (en) 2016-07-21 2018-03-13 Carr Lane Quackenbush Bite-safe artificial teat

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3186411A (en) * 1963-04-24 1965-06-01 William D Skidmore Luminous pacifier
DE4133064C2 (de) * 1991-10-04 1994-11-10 Michael Kesselring Babysauger
DE9213576U1 (de) * 1992-09-02 1992-12-03 Mapa GmbH Gummi- und Plastikwerke, 2730 Zeven Einteiliger Sauger
US5322031A (en) * 1992-12-14 1994-06-21 Safety 1St, Inc. Color change nipple

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9532702A1 *

Also Published As

Publication number Publication date
WO1995032702A1 (fr) 1995-12-07

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