WO2019228662A1 - Procédé de fabrication d'un corps moulé à nano-fourrure, kit de fabrication d'un corps moulés à nano-fourrure et corps moulé à nano-fourrure - Google Patents

Procédé de fabrication d'un corps moulé à nano-fourrure, kit de fabrication d'un corps moulés à nano-fourrure et corps moulé à nano-fourrure Download PDF

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Publication number
WO2019228662A1
WO2019228662A1 PCT/EP2019/000115 EP2019000115W WO2019228662A1 WO 2019228662 A1 WO2019228662 A1 WO 2019228662A1 EP 2019000115 W EP2019000115 W EP 2019000115W WO 2019228662 A1 WO2019228662 A1 WO 2019228662A1
Authority
WO
WIPO (PCT)
Prior art keywords
polymer film
mold insert
polymer
manufacturing
temperature
Prior art date
Application number
PCT/EP2019/000115
Other languages
German (de)
English (en)
Inventor
Claudia ZEIGER
Alexander Storz
Andreas STRIEGEL
Maryna KAVALENKA
Matthias Worgull
Hendrik Hölscher
Original Assignee
Karlsruher Institut für Technologie
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 Karlsruher Institut für Technologie filed Critical Karlsruher Institut für Technologie
Priority to EP19721188.1A priority Critical patent/EP3801939A1/fr
Publication of WO2019228662A1 publication Critical patent/WO2019228662A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00—Methods preventing fouling
    • B08B17/02—Preventing deposition of fouling or of dust
    • B08B17/06—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement
    • B08B17/065—Preventing deposition of fouling or of dust by giving articles subject to fouling a special shape or arrangement the surface having a microscopic surface pattern to achieve the same effect as a lotus flower
    • 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
    • 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
    • B29C59/04—Surface shaping of articles, e.g. embossing; Apparatus therefor by mechanical means, e.g. pressing using rollers or endless 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
    • 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
    • B29C2059/023—Microembossing

Definitions

  • the invention relates to a production method for producing a shaped article with nanoprint, a set for producing a shaped article with nanopart and a shaped article having a nanopowder.
  • Nanopelz is a material that forms a superhydrophobic surface. It can u.a. for oil / water separation or for underwater friction reduction use.
  • DE 10 2013 109 621 A1 it is known from DE 10 2013 109 621 A1 to produce nanopelt by means of hot drawing.
  • a steel plate which is roughened by sandblasting, heated as a mold insert and pressed while hot on a polymer film.
  • the polymer film is fixed in a preparatory step on a substrate plate.
  • the temperature of the steel plate is above the glass transition temperature of the polymer film.
  • the mold insert is peeled off the surface of the polymer film, pulling micro- and nano-particles out of the polymer which solidify in air and then form the nanoparticle.
  • the process is designed especially on hot stamping machines, whereby the maximum size of nanoprint films is greatly limited, it is only a batch operation possible
  • a disadvantage of the aforementioned prior art is that certain process parameters, such as. Temperature must be maintained very accurately.
  • the Nan opelz can be made only on a few square centimeters and often has irregularities on
  • the mold insert after each use must be laboriously cleaned - so when using sparingly soluble polymers, the steel plate must be re-blasted again.
  • This object is achieved by a manufacturing method for producing a shaped body with nano-fur having the features of claim 1.
  • a first embodiment of the method according to the invention relates to a manufacturing method for the production of nano-fur, by means of at least one mold insert with a predetermined roughness, a contact body with a contact surface and a polymer film.
  • a first step at least a portion of the polymer film is applied to the contact surface of the contact body and thereafter the polymer film is heated at the side facing away from the contact surface to a predetermined temperature.
  • the mold insert is brought into contact with the heated side of the polymer film.
  • the mold insert is pressed or pressed onto the polymer film, wherein the polymer film penetrates into the roughness of the mold insert.
  • polymer film pressed onto the mold insert is allowed to cool and, after cooling, the polymer film is removed from the mold insert, thereby forming the nanopack on the side of the polymer film facing the mold insert.
  • This method relates to a cold drawing of the nanopart or the molding thus formed, which carries this fur. During cold drawing, the film is heated prior to contact with the mold insert.
  • the cold drawing can thus take place in which either the polymer film or at least the side of the polymer film facing the mold insert or the mold insert is heated to a temperature which is above the glass transition temperature T G of the polymer used.
  • the temperature may even be above the melting temperature; what is important is a temperature which corresponds to a softening temperature above which the polymer softens.
  • Temperatures around 130 ° C, for example, have been proven for cold-drawing polyethylene, and temperatures around 160 ° C for polypropylene. In this case, only the upper half of the film is heated, which is then so soft that the polymer can penetrate into the roughness depth of the mold insert and the cavities or inter mediate spaces can fill.
  • the method can provide that the polymer film pressed onto the mold insert is allowed to cool to a temperature which is below the glass transition temperature TG of the polymer film.
  • the cooling takes place by itself and not by a separate cooling.
  • it can be provided that, before the mold insert has cooled, the mold insert is lifted off or raised from the abutment body and, at the same time, a lifting off of the polymer film takes place, which still adheres to the mold insert.
  • the film can then be easily removed from the molding.
  • the embodiment of the invention allows for easier production of Nahopelz.
  • the fact that fewer parts and process steps are necessary, the process is also cheaper than, for example, the hitherto practiced hot drawing.
  • a set for producing nanopelt comprises a polymer film, one or more mold inserts having a surface which has a predetermined roughness, and one or more contact bodies on which the polymer film rests when the mold insert is pressed on.
  • the set can have a heating device, in particular a radiant heater. This can either heat the film directly or indirectly via a previous heating of the mold insert.
  • the roughness of the mold insert may be in a range from 1 ⁇ m to 20 ⁇ m. Depending on the selected roughness or selected roughness depth, different qualities of nanoparticles can be produced. Also, there may be several mold inserts in the set that have different roughnesses. In a further development, the set can provide that the mold insert or the abutment body are plates or rollers. It can also be used as a mold insert and a plate as a plant body or vice versa. Thus, a large-scale or continuous production can take place, and thus, among other things, a roll-to-roll process for an industrial production can be used. The mold insert can be used several times, because due to the intended use of cold drawing no or very little polymer remains stuck in the mold insert.
  • nanopride is produced by hot drawing on one side of the polymer film.
  • the film must first be fixed on a substrate plate, for example made of steel, which may be roughened.
  • This substrate plate is sandblasted and forms the mold insert in the second step, the cold drawing of the second side of the polymer film.
  • the fixing of the polymer film on the substrate plate for hot drawing (film is heated and pressed into the cavities of the rough substrate plate) is thus simultaneously the first step of the subsequent cold drawing.
  • the polymer or Polyethlen polypropy ⁇ used is len.
  • Other polymers are contemplated to have similar or the same properties as the aforementioned polymers.
  • the thickness of the polymer film may be between 200 and several millimeters.
  • a carrier film can be used for stabilization, which is connected to the polymer film.
  • a shaped body which has at least one section with nano-fur is produced by means of the kit according to the invention and by the production method according to the invention.
  • Fig. 3 is a schematic representation of a continuous embodiment of the inventive manufacturing method.
  • FIG. 1 shows a sequence of the method according to the invention.
  • a first step a the polymer film 3 is placed on the contact surface 1 a of the plant body 1 and the molded body 2 is placed on the surface of the polymer film 3 facing away from the contact body 1.
  • the contact body 1 and the molded body 2 have a temperature which is below the softening temperature of the polymer of the polymer film 3.
  • the softening temperature may be glass transition temperature T G or the melting temperature.
  • the mold insert 2 is first heated by means of a heating system (eg electrical heating element) above the glass transition temperature Tg of the polymer of the polymer film 3 and placed on the polymer film 3 and pressed with a predetermined force F.
  • a heating system eg electrical heating element
  • the contact pressure resulting from the force typically in the range between 1 MPa and 10 MPa. The force is maintained until Forte 2 has a temperature below the softening temperature of the polymer.
  • the contact body 1 has a temperature which lies below the softening temperature of the polymer of the polymer film 3, so that only the upper half of the polymer film is heated and the lower half is at a temperature corresponding to that of the contact body 1.
  • step c) of the mold insert 2 is lifted from the plant body 1, thereby dissolving the polymer film 3 of the contact surface 1a.
  • step d) film 3 is then removed from the surface 2a of the mold insert 2 and nanopart 4 is formed by pulling the polymer out of the rough surface 2a.
  • FIG. 2 shows a slightly modified embodiment, wherein steps c ') and d') of this embodiment of the method in FIG. 2 are the same as steps c) and d) of the embodiment of the method according to FIG. 1.
  • step a ' The heating of the polymer film 3 by means of a radiant heater 5 is different according to step a '). Again, the contact body 1 remains at a temperature which is below the softening temperature of the polymer of the polymer film 3 and only the surface of the polymer film 3, the contact surface 1a is turned away, is heated. The heating is again carried out to a temperature which is above the softening temperature of the polymer of the polymer film 3. In step b '), the molded body 2 can then be placed and pressed.
  • the roughened surface 2a of the molded body 2 is pressed onto the heated film 3 with the predetermined force F, whereby the heated, softened polymer penetrates into the roughened surface 2a of the mold insert 2.
  • Fig. 3 in a roll-to-roll execution of the set consisting of molded body 2, investment body 1 and polymer film 3, wherein the body 1 and body 2 are both present as rolls.
  • the polymer film 3 is guided from left to right in FIG. 3, wherein it is first heated by means of the radiant heater 5.
  • the steps b '), c') and d ') named in FIG. 2 are then carried out simultaneously or in a continuous process.
  • the roller mold insert 2 moves counterclockwise according to the arrow in FIG. 3, the roller body 1 moves as shown in FIG. 3 in the clockwise direction. After passing between the rollers, the polymer film 3 is then pulled off the molded article 2 downwards and the nanopart 4 is formed.
  • FIG. 4 shows a sequence of steps how a double-sided nanopack 4 can be produced:
  • first of all nanoparticles 4 are produced by hot drawing on one side of the polymer film 3.
  • the film 3 first on a substrate plate 6, for example. Steel, which can be roughened, fixed.
  • the surface of the substrate plate 6 is sandblasted and forms the mold insert 2 in the second step B, the cold drawing of the second side of the polymer film.
  • the polymer film 3 is attached to the substrate plate 6 and this forms in the following second step B, the cold drawing of the second side of the polymer film, a further mold insert to the other mold insert 2, the lie on the other side of the Polymerfo- 3 pressed becomes.
  • the fixing of the polymer film 3 on the substrate plate for hot drawing is at the same time the first step A of the subsequent cold drawing, which takes place as in FIG. 1 (see steps a) -d) there).
  • the double-sided nano fur 4 is shown.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

La présente invention concerne un procédé de fabrication de nano-fourrure, un kit de fabrication de celle-ci et un corps moulé. Le procédé de l'invention, en liaison avec au moins un insert de moule (2) de rugosité prédéterminée, un corps de contact (1) ayant une surface de contact (1a) et un film polymère (3), comprend les étapes suivantes : a) appliquer au moins une partie du film polymère (3) sur la surface de contact (1a) du corps de contact (1) ; b) chauffer le film polymère (3) du côté opposé à la surface de contact (1a) à une température prédéterminée ; c) mettre l'insert de moule (2) en contact avec le côté chauffé du film polymère (3) et presser l'insert de moule (2) sur le film polymère (3), le film polymère (3) pénétrant dans la rugosité de l'insert de moule (2) ; d) laisser refroidir le film polymère (3) pressé contre l'insert de moule (2) et enfin retirer le film polymère (3) de l'insert de moule (2) et former ainsi la nano-fourrure (4) sur le côté du film polymère (3) qui est dirigé vers l'insert de moule (2).
PCT/EP2019/000115 2018-05-30 2019-04-11 Procédé de fabrication d'un corps moulé à nano-fourrure, kit de fabrication d'un corps moulés à nano-fourrure et corps moulé à nano-fourrure WO2019228662A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19721188.1A EP3801939A1 (fr) 2018-05-30 2019-04-11 Procédé de fabrication d'un corps moulé à nano-fourrure, kit de fabrication d'un corps moulés à nano-fourrure et corps moulé à nano-fourrure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018004339.9A DE102018004339A1 (de) 2018-05-30 2018-05-30 Herstellverfahren zur Herstellung eines Formkörpers mit Nanopelz, Set zur Herstellung eines Formkörpers mit Nanopelz und Formkörper mit Nanopelz
DE102018004339.9 2018-05-30

Publications (1)

Publication Number Publication Date
WO2019228662A1 true WO2019228662A1 (fr) 2019-12-05

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Application Number Title Priority Date Filing Date
PCT/EP2019/000115 WO2019228662A1 (fr) 2018-05-30 2019-04-11 Procédé de fabrication d'un corps moulé à nano-fourrure, kit de fabrication d'un corps moulés à nano-fourrure et corps moulé à nano-fourrure

Country Status (3)

Country Link
EP (1) EP3801939A1 (fr)
DE (1) DE102018004339A1 (fr)
WO (1) WO2019228662A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512772A1 (de) 1975-03-22 1976-09-30 Metzeler Schaum Gmbh Verfahren zur herstellung von polymerbahnen mit faseriger oberflaeche
US20040182820A1 (en) * 2003-03-20 2004-09-23 Shigehisa Motowaki Nanoprint equipment and method of making fine structure
DE102012110048B3 (de) * 2012-10-22 2014-05-15 Karlsruher Institut für Technologie Verfahren und Vorrichtung zur Herstellung eines Formkörpers mit mindestens zwei hierarchisch zueinander angeordneten Strukturebenen
DE102013109621A1 (de) 2012-11-19 2014-06-05 Karlsruher Institut für Technologie Verfahren zur Herstellung eines Formkörpers mit superhydrophober Oberfläche und Formkörper erhältlich mit diesem Verfahren und dessen Verwendung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2512772A1 (de) 1975-03-22 1976-09-30 Metzeler Schaum Gmbh Verfahren zur herstellung von polymerbahnen mit faseriger oberflaeche
US20040182820A1 (en) * 2003-03-20 2004-09-23 Shigehisa Motowaki Nanoprint equipment and method of making fine structure
DE102012110048B3 (de) * 2012-10-22 2014-05-15 Karlsruher Institut für Technologie Verfahren und Vorrichtung zur Herstellung eines Formkörpers mit mindestens zwei hierarchisch zueinander angeordneten Strukturebenen
DE102013109621A1 (de) 2012-11-19 2014-06-05 Karlsruher Institut für Technologie Verfahren zur Herstellung eines Formkörpers mit superhydrophober Oberfläche und Formkörper erhältlich mit diesem Verfahren und dessen Verwendung

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Publication number Publication date
DE102018004339A1 (de) 2019-12-05
EP3801939A1 (fr) 2021-04-14

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