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EP1387626A1 - Procede de fabrication d'une fermeture velcro - Google Patents

Procede de fabrication d'une fermeture velcro

Info

Publication number
EP1387626A1
EP1387626A1 EP02737993A EP02737993A EP1387626A1 EP 1387626 A1 EP1387626 A1 EP 1387626A1 EP 02737993 A EP02737993 A EP 02737993A EP 02737993 A EP02737993 A EP 02737993A EP 1387626 A1 EP1387626 A1 EP 1387626A1
Authority
EP
European Patent Office
Prior art keywords
plastic material
carrier
support
shaping
hooking means
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Withdrawn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
EP02737993A
Other languages
German (de)
English (en)
Inventor
Jan Tuma
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.)
Gottlieb Binder GmbH and Co KG
Original Assignee
Gottlieb Binder GmbH and Co KG
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 Gottlieb Binder GmbH and Co KG filed Critical Gottlieb Binder GmbH and Co KG
Publication of EP1387626A1 publication Critical patent/EP1387626A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0046—Fasteners made integrally of plastics
    • A44B18/0049—Fasteners made integrally of plastics obtained by moulding processes
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B18/00—Fasteners of the touch-and-close type; Making such fasteners
    • A44B18/0046—Fasteners made integrally of plastics
    • A44B18/0061—Male or hook elements
    • A44B18/0065—Male or hook elements of a mushroom type
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/12—Articles with an irregular circumference when viewed in cross-section, e.g. window profiles
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/30—Extrusion nozzles or dies
    • B29C48/35—Extrusion nozzles or dies with rollers
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/91—Heating, e.g. for cross linking
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling drums
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/9145—Endless cooling belts
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/9155—Pressure rollers
    • 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
    • B29C59/00—Surface shaping of articles, e.g. embossing; Apparatus therefor
    • B29C59/02—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing
    • B29C59/022—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing characterised by the disposition or the configuration, e.g. dimensions, of the embossments or the shaping tools therefor
    • B29C59/025—Fibrous surfaces with piles or similar fibres substantially perpendicular to the surface

Definitions

  • the invention relates to a method for producing an adhesive fastener part with a plurality of interlocking means formed in one piece with a carrier, in which a plastic material in a flowable state for forming the carrier is fed to a gap between a printing device and a molding device which is provided with cavities for shaping the respective hooking means is provided.
  • thermoplastic plastic in a plastic or liquid state is formed in a gap between a pressure roller and a to produce an adhesive fastener part with a plurality of interlocking means formed integrally with a carrier in the form of thickenings (interlocking heads)
  • Form roll supplied the form roll is provided with cavities open to the inside and outside, and both rolls are driven in opposite directions of rotation to form the carrier in the gap between the rolls.
  • the known form roller also has a screen, the cavities of which are preferably etched or have been produced by means of a laser, the finished interlocking means being produced solely by the fact that the thermoplastic material at least partially hardens in the open cavities of the screen of the molding roll.
  • thermoplastic used is preferably polypropylene, polyamide, polyethylene, and one or more of these plastics-containing copolymers or terpolymers.
  • the thickenings of the stems are formed in the form of flattened or concave mushroom heads.
  • fastener parts can be produced very inexpensively and with high quality, which work together with corresponding fastener parts to form conventional fastener fasteners, which can have comparable hooking means or which are formed from a fleece, loops or loop material.
  • the adhesive closure part produced in this way is flexible and can adapt to different geometries; there is no significant inherent elasticity behavior of the closure. This means that the molded or extruded adhesive closure part essentially retains its predetermined outer shape and cannot be elastically stretched to any appreciable extent.
  • Resilient properties of this kind are, however, also desirable in the case of adhesive fastener systems, for example if one wants to fix bandages elastically to body parts in the orthopedic or sports-medical field, which in addition to a support function should nevertheless be so elastic that they are the wearer of such bandages and support parts do not interfere.
  • elastic fastener systems are particularly well suited to keep cable harnesses to each other and this in such a way in the automotive and aircraft "vehicle sector, and be able to use shipbuilding.
  • the usual clip-like cable connector currently still predominantly used are for a difficult to attach and can not be solved non-destructively, in contrast to the described fastener systems.
  • PCT publications W099 / 1 7630 and W099 / 1 7631 also describe an elastic adhesive fastener part in which a relatively rigid and rigid plastic material for the hooking means is applied in the manner of a layer to an elastic plastic film as a further layer, the layer materials establish a firm connection with one another. So that the hooking means can then move elastically with the elastic layer film, the rigid layer material with the hooking means is preferably severed by cutting, so that the hooking means can then be moved away from one another with the stretching of the elastic film and can be reset until they adjoin the intersected ones Join areas of the rigid layer material again.
  • the manufacturing processes involved are also complex and costly, and due to the use of multiple layer materials, the thickness of the elastic adhesive closure part is dimensioned large, which makes the use of this known system in so-called micro-fasteners, which are geometrically extremely small, not seem suitable. Also, it cannot be ruled out that the layer layers will separate, particularly after a long period of use and greater forces are introduced, which leads to the fact that this known adhesive closure system becomes unusable.
  • the object of the invention is to further improve the known methods for producing an elastic adhesive fastener part, in particular to provide a cost-effective and safe method for producing such fasteners, which can also be used after a long period of use high introductory staff work safely. Furthermore, the invention is based on the object of making available adhesive fastener parts as micro-adhesive fastener parts with an elastic structure. Claim 1 and / or claim 2 achieves an object in this regard with the entirety of its features.
  • a support member is fed to the latter, which supports the support between the printing device and the plastic material in such a way that it is so thin in the shaping of the interlocking means that the carrier is provided with a predeterminable extensibility or elasticity with a suitable plastic material, it is ensured that the hooking means are integrally connected to the carrier during the shaping process. Accordingly, it is ensured that the hooking means are not unintentionally even with a long period of use and high forces Allow it to tear off from the tape-like or foil-like carrier, which can otherwise lead to the adhesive closure system becoming unusable.
  • the carrier which is designed as an expandable or elastic part, can be made extremely thin, so that elastic micro-adhesive closures or those with high elasticity can be realized with the method according to the invention.
  • the extremely thin design of the support also benefits its elasticity values, so that very good elastic properties can be achieved in this way. With the method according to the invention, very high production speeds can be achieved, so that the elastic adhesive closure part produced can be obtained very inexpensively.
  • a supporting part is fed to the latter, which supports the support between the printing device and the plastic material in such a way that the plastic material is at least once again separable at least when the hooking means are shaped
  • Incoming connection with the support part on the one hand, very high supporting forces can be realized during the shaping by the adhesive connection and, on the other hand, the adhesive force can be used in order to be able to reliably and specifically form the interlocking means with their undercuts from the mold cavities of the molding device.
  • the forced detachment from the molding device ensures that the interlocking means do not remain in the mold cavities, the latter being able to severely disrupt the production process.
  • the support part is also useful in all those applications where undercuts are made in the molding tool when shaping the hooking means, in order, for example, to be able to form a conventional hook shape or the like. In such cases it is also possible to make the carrier material extremely thick, so that very small hooking means are then placed in one piece on a thick carrier part, which can be useful for certain application modalities.
  • a plastic film preferably a polyester film, polypropylene film or polyamide film
  • a thin metal foil for example an aluminum foil
  • the support part can be used again and again in a closed circuit, so that no waste arises, which on the one hand benefits the environment and on the other hand contributes to lowering the manufacturing costs for the system.
  • Any shape can be produced as a hooking means, such as hooking heads, engagement hooks, mushrooms or preforms on hooking means such as stem material, the free head ends of which are formed into hooking heads in a subsequent shaping process, for example a calendering process.
  • the rollers in question being heated for the shaping process.
  • the introduced plastic material for the shaping is a thermoplastic polyurethane material, on the one hand a favorable connection is achieved with the support part for the shaping process, which, however, can also be easily separated again after the shaping in order to obtain the elastic adhesive closure part.
  • the figure shows a shaping device, generally designated 10, in the form of a shaping roller on which. a sieve 12 is drawn up, which can for example consist of nickel.
  • the screen 12 of the shaping roller 10 has cavities 14 on its entire outer circumference which have been etched in a manner known per se by means of a galvanic process. These cavities 14 can have a substantially cylindrical basic shape; however, any other shape can also be etched.
  • the galvanic treatment of the cavities 14 gives them a characteristic shape.
  • the elevations in question can be used to produce the hooking means of an adhesive closure part 18, designated as a whole by 16, in a single operation.
  • a flowable plastic material is supplied in a manner known per se in a plastic or liquid state by means of a feed device 20 in the form of an extruder to a gap 22 between the forming roll 10 and a printing device in the form of a printing roll 24.
  • the shaping roller 10 and the pressure roller 24 are driven in the opposite direction of rotation, so that the plastic released from the extruder 20 into the gap 22 between the rollers 10 and 24 and thus in the assignable cavities 14 can flow.
  • the plastic located in the gap 22 forms a carrier 26 to which the hooking means 16 are connected in one piece.
  • the distance between the two rollers 10 and 24 determines the width of the gap 22 and thus the thickness of the carrier 26.
  • the hooking means 16 themselves are formed by the plastic flowing into the open cavities 14 of the screen 12 of the shaping roller 10, whereby in Interaction with the elevations in the cavities 14 caused by the galvanic etching as described above, which have a stem 28 formed by the cavity 14, at the end facing away from the carrier 26 an all-round edge in the form of a thickening or a hooking head 30 is formed.
  • the respective interlocking head 30 is suitable for interlocking with interlocking means of a further adhesive closure part, not shown in more detail, for example in the form of a fake.
  • the relevant manufacturing process for adhesive fastener parts is known and is described in detail, for example, in DE 196 46 318 A1.
  • thermoplastic polyurethane material serves as the plastic material for producing the hooking means 16 including the carrier 26.
  • a support part 32 is provided which is fed between the pressure roller 24 and the plastic material of the carrier 26, the latter Supports.
  • the contact pressure of the pressure rollers 24 would be sufficient if the support 26 were made sufficiently thin sufficient, which can be at a line pressure of more than 1 t, to damage the carrier 26.
  • the relevant contact pressure forces are absorbed uniformly and it is surprising that in this way the carrier 26 can be exempted from harmful forces and made extremely thin.
  • a plastic film preferably a polyester film, polypropylene film or polyamide film, can be used as the support part 32.
  • a polyester film is to be used in the present exemplary embodiment.
  • the support part 32 can also consist of a thin metal foil, for example an aluminum foil or the like. In the embodiment shown, the support part 32 is continuously moved via deflection rollers 34 in a closed circuit, the direction of rotation of the deflection rollers 34 being represented by arrows. If the support part 32 is designed as a polyester film, it is more practical, according to practical tests, to dispose of the polyester film after its use and to insert new film material at the location of the upper feed of the plastic material.
  • a take-off roller 36 is also provided, with the same direction of rotation as the pressure roller 24, the take-off roller 36 serving to remove the hooking means 16 from the cavities 14 of the forming roller 10.
  • the actual shaping process is followed by a calendering process in which two calender rolls 38 under pressure with the support part 32 removed on the rear side of the carrier 26 and act on the top of the interlocking heads 30. After the relevant calendering process the fastener part 18 can then be wound up on shipping rolls for further transport in the usual and not shown manner.
  • the adhesive closure part 18 can also be removed immediately and subjected to the calendering process mentioned in another work station (not shown). If 12 modern conical sieve structures are used instead of the simple structure of a sieve, calendering can also be dispensed with entirely if necessary.
  • both the molding roll 10 and the pressure roller 24 are heated. It has proven to be advantageous to drive the pressure roller 24 in a temperature range up to 130 ° C., preferably in the range around 100 ° C., whereas the shaping roller 10 is preferably operated in a temperature range between 20 ° C. and 150 ° C. in a temperature range around 40 ° C.
  • film material for the support part 32 for example in the form of a polyester film whose Shore A hardness according to DIN 53.504 is in a range from 80 to 89, preferably 85.
  • the stretch elasticity of the carrier film as support part 32 can be in the range from 0 to 5% for a polyester film, whereas the thermoplastic polyurethane material used for the adhesive fastener part 18 has a stretch elasticity between 15 to 89%; both values measured according to Vickers at 1 mm thick test specimen and room temperature.
  • the mentioned carrier 26 and the support part 32 can have a band structure, but can also be designed as a sheet-like film body his.
  • the extensible or elastic support 26 can be made very thin.
  • the hooking means 16 can be moved away from one another under the action of force, whereby the carrier 26 expands further and, when the force 26 of the carrier 26 is removed, the hooking means 16 automatically returns to their original position due to its inherent elasticity.
  • a fully elastic adhesive closure part 18 is realized with which a large number of practical applications can be realized.
  • the support part 32 If a polyester film is used as the support part 32, it is also possible to produce a separable connection between the support part 32 and the support 26 during the shaping.
  • the relevant adhesive or adhesive connection then ensures that the subsequent removal process, in which the interlocking means 16 are molded out of the cavities 14 of the molding device 10, can take place without hindrance, even if undercuts in the head material of the interlocking means 16 were undermined by parts of the molding device 10 are.
  • the latter also allows a higher speed of the production process.
  • the polyester film preferably remains as a support part 32 on the carrier 26 in the subsequent calendering process 38, in order to influence the head design of the hooking means 16 in a favorable manner. Then the support part 32 can then be separated from the carrier 26 and disposed of or returned to the molding device for a new processing step.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Slide Fasteners (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une fermeture velcro (18) comportant une pluralité d'éléments d'accrochage (16) formés d'une seule pièce avec un support (26). Le procédé selon l'invention consiste à alimenter un matériau plastique à l'état coulant dans une fente (22) située entre un dispositif de compression (24) et un dispositif de moulage (10) de manière à produire le support (26), ledit dispositif de moulage étant pourvu d'espaces creux (14) destinés à mouler les éléments d'accrochage respectifs (16). Selon l'invention, on alimente un élément d'appui (32) en plus du matériau plastique dans la fente (22), ledit élément d'appui permettant l'appui du support (26) entre le dispositif de compression (24) et le matériau plastique. Ainsi, il est possible de fabriquer un support (26) d'épaisseur réduite et/ou de simplifier le démoulage du support (26) hors du dispositif de moulage (10).
EP02737993A 2001-05-12 2002-04-25 Procede de fabrication d'une fermeture velcro Withdrawn EP1387626A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10123206A DE10123206A1 (de) 2001-05-12 2001-05-12 Verfahren zum Herstellen eines Haftverschlußteils
DE10123206 2001-05-12
PCT/EP2002/004553 WO2002091869A1 (fr) 2001-05-12 2002-04-25 Procede de fabrication d'une fermeture velcro

Publications (1)

Publication Number Publication Date
EP1387626A1 true EP1387626A1 (fr) 2004-02-11

Family

ID=7684596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02737993A Withdrawn EP1387626A1 (fr) 2001-05-12 2002-04-25 Procede de fabrication d'une fermeture velcro

Country Status (5)

Country Link
US (1) US20040119192A1 (fr)
EP (1) EP1387626A1 (fr)
JP (2) JP2004533943A (fr)
DE (1) DE10123206A1 (fr)
WO (1) WO2002091869A1 (fr)

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BR112018071779B1 (pt) 2016-04-29 2022-09-06 Aplix Dispositivo de retenção com ganchos, e, método para conformar um dispositivo de retenção
FR3050623B1 (fr) * 2016-04-29 2019-08-09 Aplix Procede et appareillage ameliores pour la formation d'elements de retenue
DE102016117988B4 (de) 2016-09-23 2023-05-25 Lohmann-Koester Gmbh & Co. Kg Männliche Komponente eines zweikomponentigen Verschlusssystems sowie Verfahren zur Herstellung einer derartigen Komponente
DE102016120409A1 (de) * 2016-10-26 2018-04-26 Lohmann-Koester Gmbh & Co. Kg Verfahren zur Herstellung eines siebförmigen Entformungswerkzeugs

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WO2002091869A1 (fr) 2002-11-21
DE10123206A1 (de) 2002-11-28
US20040119192A1 (en) 2004-06-24
JP2008221848A (ja) 2008-09-25
JP2004533943A (ja) 2004-11-11

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