WO1999054106A2 - Procede pour la fabrication d'une matrice munie de cavites et dispositif comportant une matrice de ce type - Google Patents

Procede pour la fabrication d'une matrice munie de cavites et dispositif comportant une matrice de ce type Download PDF

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Publication number
WO1999054106A2
WO1999054106A2 PCT/EP1999/002532 EP9902532W WO9954106A2 WO 1999054106 A2 WO1999054106 A2 WO 1999054106A2 EP 9902532 W EP9902532 W EP 9902532W WO 9954106 A2 WO9954106 A2 WO 9954106A2
Authority
WO
WIPO (PCT)
Prior art keywords
cavities
matrix
core
metal
jacket
Prior art date
Application number
PCT/EP1999/002532
Other languages
German (de)
English (en)
Other versions
WO1999054106A3 (fr
WO1999054106A8 (fr
Inventor
Werner Wagner
Original Assignee
Hcd Hygienic Composites Development 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
Application filed by Hcd Hygienic Composites Development Gmbh filed Critical Hcd Hygienic Composites Development Gmbh
Priority to AU38169/99A priority Critical patent/AU3816999A/en
Publication of WO1999054106A2 publication Critical patent/WO1999054106A2/fr
Publication of WO1999054106A3 publication Critical patent/WO1999054106A3/fr
Publication of WO1999054106A8 publication Critical patent/WO1999054106A8/fr

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Classifications

    • 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
    • B29C39/00—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor
    • B29C39/14—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length
    • B29C39/148—Shaping by casting, i.e. introducing the moulding material into a mould or between confining surfaces without significant moulding pressure; Apparatus therefor for making articles of indefinite length characterised by the shape of the surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/36—Removing material
    • B23K26/38—Removing material by boring or cutting
    • B23K26/382—Removing material by boring or cutting by boring
    • B23K26/389—Removing material by boring or cutting by boring of fluid openings, e.g. nozzles, jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
    • B26F1/26—Perforating by non-mechanical means, e.g. by fluid jet
    • 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
    • B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
    • B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
    • B29C43/222—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length characterised by the shape of the surface
    • 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
    • B29C2791/009—Using laser

Definitions

  • the invention relates to a method for producing a matrix filled with capillary-like cavities in high density on a surface for forming thermoplastic semi-finished products, in which cavities are produced in a solid substrate with the aid of electromagnetic beams of high power density, in particular laser beams. wherein the substrate is made in the form of an open or closed jacket made of a metal which is then to be brought into contact with a deformable thermoplastic composition.
  • DE 195 24 076 Cl describes a method for producing a surface-structured, sheet-like semi-finished product from a thermoplastic.
  • a roll surface with a negative structure (matrix) is used, which has an outer layer made of a plastic.
  • the cladding layer is suitable for producing semi-finished products provided with a velor-like surface and comprises hair-fine pores which are introduced into the cladding layer with the aid of an energy beam, preferably a laser beam.
  • the plastic mentioned in the prior art as a solid substrate is preferably polytetrafluoroethylene (TEFLON or VITON, trademarks of DuPont, USA). It has shows that the production of matrices with such plastics is indeed possible, but has the particular disadvantage that the exhaust gases produced during laser drilling contain highly corrosive HF (hydrogen fluoride gas or hydrofluoric acid), which entail considerable technological effort, especially the need for exhausters and the like.
  • TEFLON or VITON trademarks of DuPont, USA
  • WO 94/29070 a method for introducing a geometric structure into different substances, such as aluminum, lead, wood, ceramic, glass, copper or steel, using laser radiation.
  • the cited document shows various patterns and the possibility of applying the method to flat substrates, but does not describe how a cavity structure can be introduced into the surface in a simple manner in the case of a metal-coated or metal roller.
  • This object is achieved by a method in which, in order to produce a matrix filled with cavities, a metal jacket is produced by electroplating as a metal deposit on a core, is removed from the core and with the cavities with the aid of electromagnetic rays of high power density, in particular laser beams is provided, which are formed in the form of blind holes or continuous perforations, and is then placed on a new roller core.
  • the coat be provided with a grained structure before perforation.
  • a CO? High-power laser or another high-power laser is preferably used in the process.
  • a device for carrying out the method can work with a matrix which is formed by a jacket which is placed around the core cylinder and which is to be brought into contact with a deformable thermoplastic composition.
  • the core cylinder is seamlessly shaped using the aforementioned galvanoplastic process.
  • the core cylinder or the band is underlaid with a vacuum-producing device in the case of continuous bores.
  • the core cylinder can also have a central cavity which is formed by a jacket made of sintered, air-permeable material, on which the perforated metal jacket is placed.
  • the device equipped with the matrix can also be connected directly to the outlet nozzle of an extruder from which a thermoplastic can be brought out in the molten state.
  • a device is considered, such as that mentioned and described in the above-mentioned patent specification 195 24 076 C1.
  • the cavity density should be between 3600 and 16000 cavities per cm 2 and should have a diameter between 10 and 100 ⁇ m.
  • the depth of the cavities depends on the thickness of the core shell, with thicknesses of 150 to 500 ⁇ m having been found to be possible and advantageous.
  • FIG. 1 shows an application example of a matrix in a first embodiment
  • FIG. 2 in a second exemplary embodiment
  • FIG. 3 in a third exemplary embodiment
  • Figure 4 is an enlarged view of the matrix
  • FIG. 5 shows the manufacture of a matrix cylinder.
  • a jacket section 30 which has been laid flat for the sake of the drawing and which is provided with cavities 20 is shown enlarged.
  • the section shown in FIG. 4 consists of electrodeposited iron with a thickness of 200 ⁇ m and is provided with numerous frustoconical cavities 20, which have a diameter of approximately 40 to 60 ⁇ m on the upper side and 10 to 20 ⁇ m in diameter on the underside.
  • the cavities 20 are generated with the aid of pulse lasers through a focused laser beam with a hollow power density.
  • the metal struck by the laser beam evaporates. It is immediately sucked off by a suction nozzle, which is arranged directly above the exit of the laser, and then condenses.
  • the configuration shown in FIG. 4 is based on a cavity density of 5000 cavities per cm 2 . Wide variations are possible here, depending on the diameter of the individual cavity and the desired pile density. Up to 1600 cavities per cm 2 can preferably be introduced.
  • Section 30 is part of a core cylinder.
  • the result is a roller jacket 5, as shown in Figure 1.
  • the starting point is a hollow roller 4 which has a porous, sintered roller cylinder 24.
  • the roller jacket 5 is applied to the roller cylinder 24, so that there is a matrix on the outside which comprises the numerous fine cavities.
  • the cavities 20 are continuous and end above the air-permeable sintered material of the roll shell.
  • An LLDP polymer of average molecular weight with a melt index of -15 (2.16 kg / 190 ° C.) and a density of 0.94 is used to produce a polyethylene velor material.
  • a single-screw extruder schematically indicated by the reference number 1, which has a screw length greater than 20 times the diameter with a screw diameter of 90 mm, the material is melted and homogenized.
  • the plastic melt 3 passes through a corresponding channel to the extruder mouth 2. During the homogenization and extrusion, a compression ratio of 1: 2.5 and a screw temperature of 250 ° C. are maintained.
  • the polyethylene melt 3 is fed to the discharge nozzle with the mouth 2 under constant pressure.
  • a vacuum chamber 6 with the opening 16 is provided in front of the discharge nozzle 2 in the direction of rotation of the roller 4.
  • the vacuum in the vacuum chamber spreads to the roller surface. Although part of the vacuum can be equalized by the air flowing in through the roller cylinder 24, it must first be noted that the cavities have a negative pressure with respect to the outside air pressure.
  • the matrix roller is kept at a temperature of 130 ° C. in the area of the matrix surface.
  • heating elements are provided.
  • the negative pressure directly at the extruder mouth 2 is to be measured at 0.2 to 0.5 bar.
  • Downstream water bath 23 that cools the film sustainably. After passing through the water bath 23, the plastic material lying on the surface is solidified by cooling, wherein it assumes the surface structure corresponding to the matrix 25 on the side brought into contact with the roller.
  • a take-off roller 14 is arranged, which picks up the film or the semi-finished product and pulls it off the roller 4 or the roller shell.
  • the removed semi-finished product 9 is then, for example, pulled through a pair of cooling or embossing rollers 15 and then wound on a supply roll with low tension.
  • the production method of a roll shell made of nickel, reference number 31, is shown schematically in FIG.
  • a metal deposit made of nickel with a thickness of 150 ⁇ m is produced on a core 33 in a manner known per se.
  • the core is provided with a jacket 31 with the aid of a pulse laser 32 with fine continuous cavities 20 with a diameter of 60 ⁇ m ⁇ 10 ⁇ m with a density of 10,000 cavities per cm 2 .
  • the core 33 is then removed, the jacket 31 is pulled off and fitted onto a new roller core 23 or roller cylinder 24.
  • the resulting roller 4 is shown in Figure 2.
  • a vacuum can be set within the roller 4, which is, for example, - 0.5 bar.
  • Two extruder nozzles are mounted above the roller 4, so that a two-layer film can be produced by applying it to the matrix 25.
  • a melt 3 X lying on the top which consists of a tough, mechanically loadable polymer and has a melt index of 18 to 30 and a layer thickness of 20 to 60 ⁇ m, is produced.
  • the surface is kept at 130 ° C so that there is a slight flow.
  • a velor layer with knobs or hairs that can be easily pulled out of the jacket 31 is created.
  • the two-layer film one side of which can be very easily deformed on the surface and which is provided with the properties required for further processing by the tough backing layer, is pressed firmly onto the jacket 31 with the aid of a pressure roller 41.
  • a further cooling takes place in a water bath 23.
  • the semi-finished product 9 is drawn off via the take-off roller 14 and the pair of rollers 15.
  • a matrix roller 4 with a matrix 25 of the type described above is used, but here we also have a film 39 from an extruder on the cylinder
  • a pressure roller 44 Pressed on by a pressure roller 44.
  • the film material is heated to about 125 ° C. by means of a heater 40, so that it becomes practically flowable.
  • rollers 42 which are kept at a temperature of 110 ° C., the material is pressed firmly into the cavities, with the material additionally being sucked through suction channels 34 inside the roller 4 through the cavities of the matrix.
  • cooling takes place through the cooling units 43.
  • the thermoplastic material cools and hardens and is then removed as a semi-finished product via the take-off roller.
  • the film can be preheated by infrared emitters or by hot air. After cooling and pulling off the tool surface, a fibrous or studded semi-finished film is created.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

L'invention concerne un procédé pour la fabrication d'une matrice (25) munie de cavités (20) de type capillaire en très grande quantité. En vue de la simplification de la fabrication d'une enveloppe métallique, celle-ci est réalisée par galvanoplastie sous forme de dépôt de métal sur un mandrin (33), est séparée de ce dernier et munie des cavités (20) à l'aide de rayons électromagnétiques de haute puissance volumique, notamment des rayons laser.
PCT/EP1999/002532 1998-04-18 1999-04-15 Procede pour la fabrication d'une matrice munie de cavites et dispositif comportant une matrice de ce type WO1999054106A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38169/99A AU3816999A (en) 1998-04-18 1999-04-15 Method for producting a matrix provided with cavities and device with a matrix of this type

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19817237A DE19817237C2 (de) 1998-04-18 1998-04-18 Verfahren zur Herstellung einer mit Kavitäten besetzten Matrix und Vorrichtung mit einer derartigen Matrix
DE19817237.0 1998-04-18

Publications (3)

Publication Number Publication Date
WO1999054106A2 true WO1999054106A2 (fr) 1999-10-28
WO1999054106A3 WO1999054106A3 (fr) 2000-03-23
WO1999054106A8 WO1999054106A8 (fr) 2000-06-08

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Country Link
AU (1) AU3816999A (fr)
DE (1) DE19817237C2 (fr)
WO (1) WO1999054106A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6863952B1 (en) 1999-11-03 2005-03-08 Werner Wagner Multilayered, surface-structured semi-finished product consisting of thermoplastics and film-structuring method
US6872438B1 (en) 2000-07-17 2005-03-29 Advanced Design Concept Gmbh Profile or molding having a fringed surface structure
US6946182B1 (en) 1999-07-16 2005-09-20 Allgeuer Thomas T Fringed surface structures obtainable in a compression molding process
FR2878778A1 (fr) * 2004-12-08 2006-06-09 Spring Rich Ltd Procede de fabrication de fixations a crochets
ES2289857A1 (es) * 2005-04-26 2008-02-01 Spring Rich Limited Metodo y aparato perfeccionado para manufacturar cintas provistas de ganchos salientes.

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10102501C2 (de) * 2001-01-19 2003-02-20 Advanced Design Concepts Gmbh Oberflächenstrukturierung mittels Ultraschall
DE10161744A1 (de) * 2001-12-15 2003-06-18 Werner Jahn Verfahren zur Herstellung eines Haftverschlußteiles
US7655176B2 (en) 2002-12-20 2010-02-02 The Procter & Gamble Company Method of making a polymeric web exhibiting a soft and silky tactile impression
US8057729B2 (en) 2002-12-20 2011-11-15 The Procter & Gamble Company Method for making a forming structure
US20040121120A1 (en) 2002-12-20 2004-06-24 The Procter & Gamble Company Apparatus for making a polymeric web exhibiting a soft and silky tactile impression
US9545744B2 (en) 2002-12-20 2017-01-17 The Procter & Gamble Company Apparatus for making polymeric web exhibiting a soft and silky tactile impression
DE102010007493A1 (de) * 2010-02-09 2011-08-11 Windhager Handelsges. M.B.H. Verfahren zur Herstellung eines Haftverschlussteils, Verfahren zur Herstellung einer Formwalze sowie Formwalze
DE102010007494A1 (de) * 2010-02-09 2011-08-11 Windhager Handelsgesellschaft M.B.H. Verfahren zur Herstellung eines Haftverschlussteils, Verfahren zur Herstellung einer Formwalze sowie Formwalze
US9377767B2 (en) * 2012-02-29 2016-06-28 Bosch Automotive Service Solutions U.S. LLC Apparatus for data signal transmission through power connection

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555601A (en) * 1968-07-30 1971-01-19 Harold Price Apparatus for continuously forming conical shaped cleats on a thermoplastic sheet
DE2607977A1 (de) * 1975-03-06 1976-09-30 Buser Ag Maschf Fritz Matrize
US4131782A (en) * 1976-05-03 1978-12-26 Lasag Ag Method of and apparatus for machining large numbers of holes of precisely controlled size by coherent radiation
DE3741421A1 (de) * 1986-12-08 1988-06-09 Xerox Corp Galvanoformungs-verfahren und galvanoformungs-vorrichtung
WO1994029070A1 (fr) * 1993-06-11 1994-12-22 Minnesota Mining And Manufacturing Company Dispositif de replication usines par laser
DE19524076C1 (de) * 1995-07-01 1996-10-24 Hcd Gmbh Verfahren und Vorrichtung zur Herstellung eines oberflächenstrukturierten, folienartigen Halbzeugs aus einem Thermoplasten
DE19646318A1 (de) * 1996-11-09 1998-05-14 Binder Gottlieb Gmbh & Co Rationelles Verfahren zur Herstellung eines Haftverschlußteils aus thermoplatischem Kunststoff

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5585017A (en) * 1993-09-13 1996-12-17 James; William A. Defocused laser drilling process for forming a support member of a fabric forming device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555601A (en) * 1968-07-30 1971-01-19 Harold Price Apparatus for continuously forming conical shaped cleats on a thermoplastic sheet
DE2607977A1 (de) * 1975-03-06 1976-09-30 Buser Ag Maschf Fritz Matrize
US4131782A (en) * 1976-05-03 1978-12-26 Lasag Ag Method of and apparatus for machining large numbers of holes of precisely controlled size by coherent radiation
DE3741421A1 (de) * 1986-12-08 1988-06-09 Xerox Corp Galvanoformungs-verfahren und galvanoformungs-vorrichtung
WO1994029070A1 (fr) * 1993-06-11 1994-12-22 Minnesota Mining And Manufacturing Company Dispositif de replication usines par laser
DE19524076C1 (de) * 1995-07-01 1996-10-24 Hcd Gmbh Verfahren und Vorrichtung zur Herstellung eines oberflächenstrukturierten, folienartigen Halbzeugs aus einem Thermoplasten
DE19646318A1 (de) * 1996-11-09 1998-05-14 Binder Gottlieb Gmbh & Co Rationelles Verfahren zur Herstellung eines Haftverschlußteils aus thermoplatischem Kunststoff

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6946182B1 (en) 1999-07-16 2005-09-20 Allgeuer Thomas T Fringed surface structures obtainable in a compression molding process
US6863952B1 (en) 1999-11-03 2005-03-08 Werner Wagner Multilayered, surface-structured semi-finished product consisting of thermoplastics and film-structuring method
US6872438B1 (en) 2000-07-17 2005-03-29 Advanced Design Concept Gmbh Profile or molding having a fringed surface structure
FR2878778A1 (fr) * 2004-12-08 2006-06-09 Spring Rich Ltd Procede de fabrication de fixations a crochets
ES2289857A1 (es) * 2005-04-26 2008-02-01 Spring Rich Limited Metodo y aparato perfeccionado para manufacturar cintas provistas de ganchos salientes.

Also Published As

Publication number Publication date
DE19817237C2 (de) 2000-06-08
DE19817237A1 (de) 1999-10-28
WO1999054106A3 (fr) 2000-03-23
AU3816999A (en) 1999-11-08
WO1999054106A8 (fr) 2000-06-08

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