WO1998027250A2 - Feuille de matiere plastique renforcee - Google Patents

Feuille de matiere plastique renforcee Download PDF

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Publication number
WO1998027250A2
WO1998027250A2 PCT/DE1997/002929 DE9702929W WO9827250A2 WO 1998027250 A2 WO1998027250 A2 WO 1998027250A2 DE 9702929 W DE9702929 W DE 9702929W WO 9827250 A2 WO9827250 A2 WO 9827250A2
Authority
WO
WIPO (PCT)
Prior art keywords
plastic
film
threads
reinforcement
films
Prior art date
Application number
PCT/DE1997/002929
Other languages
German (de)
English (en)
Other versions
WO1998027250A3 (fr
Inventor
Gernot K. BRÜCK
Original Assignee
Imab Stiftung
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 Imab Stiftung filed Critical Imab Stiftung
Priority to EP97954698A priority Critical patent/EP0949991A2/fr
Publication of WO1998027250A2 publication Critical patent/WO1998027250A2/fr
Publication of WO1998027250A3 publication Critical patent/WO1998027250A3/fr

Links

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
    • 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
    • B29C43/28—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length incorporating preformed parts or layers, e.g. compression moulding around 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
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
    • 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
    • B29K2027/00—Use of polyvinylhalogenides or derivatives thereof as moulding material
    • B29K2027/12—Use of polyvinylhalogenides or derivatives thereof as moulding material containing fluorine
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/25—Solid
    • B29K2105/253—Preform
    • B29K2105/256—Sheets, plates, blanks or films

Definitions

  • the invention relates to a process for the production of reinforced plastic films in particular.
  • Plastic films of all kinds are produced, for example, on extruders with a slot die and processed on calender rolling mills.
  • the film thickness is adjusted by the slit size and the train speed or the gap width of the calender rolling mills.
  • extrusion is usually carried out directly onto the support material.
  • the manufacturing process is particularly critical if the support material is to be in the middle of the finished film. In the prior art, this is achieved in that the support material is guided between two slot nozzles and the plastic material is extruded on both sides. Care must be taken to ensure an exceptionally uniform flow of material from the two slot nozzles.
  • the invention has for its object to provide a simplified method for the production of plastic films, in particular reinforced plastic films.
  • Reinforced foils can be produced particularly easily with the methods according to the invention. This is done in such a way that an envelope is extruded onto the core material. Such covered threads are then woven and the fabric is processed in a calender. The sheath material of the threads is brought to close by physical and / or chemical softening processes, whereby the reinforcing fabric is surrounded on both sides by closed plastic material. By adjusting the tensile force in the calender, it can also be ensured that the core material runs straight in the tensile direction, so that there is no subsequent stretching during later use.
  • the reinforcement threads z. B. only make up about 10% of the area of the film, the optical property is impaired to a very small extent.
  • the reinforcement is enveloped in an airtight and water vapor-tight manner by the fluoropolymer, so that the reinforcement is absolutely corrosion-resistant, for example when using metals.
  • the use of stainless steel or quartz reinforcements can give the film such strength that very long distances can be covered. Due to the absolute UV stability of the fluoropolymer, such a material can be used particularly well for roof structures. But it can also replace the translucent walls of a greenhouse. Since the fluoropolymers in particular are also UV-transparent, the use of the reinforced fluoropolymer films also ensures optimal, UV-rich light in greenhouses and other buildings. The use in amusement parks is also very holiday-compliant, because in spite of the airtight roof construction, the natural sun radiation is fully used.
  • ultrafine titanium dioxide can be used as an additive, whereby z. B. harmful UV components are absorbed.
  • luminescent pigments can also be used in the sheathing plastic. These can then be excited using appropriate UVC radiation.
  • fluoropolymer films do not weather, it is useful wherever other plastic covers become brittle and yellow.
  • the high gas tightness of the fluoropolymer also allows that a double-walled film is used and the space z. B. is filled with helium.
  • the gas volume can be adjusted so that the weight of the entire roof structure is compensated for by the buoyancy of the filling gas. Since helium in particular can diffuse more easily through plastics, a very thin layer can be applied on the inner surfaces to ensure that helium does not diffuse. This can e.g. B. be a very thin aluminum layer, the optical properties are only slightly affected.
  • core materials can also be used in addition to steel threads.
  • high-strength plastic threads, glass or quartz fibers or other metal wires can be used.
  • Reinforcing fabrics can be used in the production methods according to the invention, which result in a restoring force which counteracts a flow of the elastomer. With such a reinforcement fabric, for. B. when weaving the warp thread very tight and the weft thread very loose, so that there is a very straight core wire in the direction of travel and a wave-shaped cross-wire when formed into the film.
  • this can also be achieved by weaving the construction fabric in such a way that one or more yarns of pure jacket material lie between the jacketed threads and thereby one Any distance from the core material thread to the next can be set.
  • the distance between the core threads results from the sheath volume and any intermediate threads made from sheath material and the desired film thickness.
  • the covering material can be glued either by heat radiation, by contact heat or pressure or, in the case of some plastics, also by dissolving the covering material with suitable solvents.
  • the heating of the reinforcement can be carried out in a simple manner by connecting it to a power source, so that it heats up uniformly by the flow of electrons and sinks into the plastic film, for example due to its own weight .
  • the heated film can be pressed in or pressed in. The same applies to the production of a reinforced plastic film from a composite material consisting of film-reinforcement-film.
  • Such a composite can also be produced in a membrane press, with all materials being brought above the flow temperature of the plastic material and then being able to be pressed together.
  • starting threads 1 are shown, the core 2, which consists, for example, of a glass fiber, being encased by the plastic material 3.
  • the film 4 shown in FIG. 2, in which the reinforcing threads 1 run in the longitudinal direction parallel to one another, can be produced therefrom by a method according to the invention.
  • the plastic sleeves 3 were pressed apart laterally during manufacture and have joined to form the closed film 4.
  • a fabric in which the warp thread 5, which in turn consists of a core 6 and a plastic jacket 7, is tightly tensioned and the weft thread 8, also consisting of core and jacket, loosely connects the warp threads 5. 4, in which the jacket material 7 has become a closed film 9.
  • the cores of the warp threads 5 are straight, while the cores of the weft threads 8 are arranged in a wave shape. The restoring force in the direction of the weft threads 8 results from this waveform.
  • a fabric of covered threads with core and sheath is shown alternating with threads 11 made of pure sheath material.
  • the film 12 according to FIG. 6 results, in which the tissue made of the core material is at a large distance from one another.
  • FIG. 7 shows schematically how two foils 13, 14 lying one above the other are welded in a gas-tight manner and form a cushion structure which are filled with a light gas 15. Due to the resulting buoyancy, the film is carried.
  • the upper film 13 in turn has a reinforcement.
  • FIG. 8 A device for producing the armored foils is shown in FIG. 8.
  • the fabric 16 runs through the braking device 17.
  • the Braking force is set by the brake shoe 18.
  • the fabric then runs past the first softening station 19, which emits thermal radiation. If necessary, a solvent or a solvent could also be applied there to the surface of the fabric.
  • the fabric web then runs over a plurality of rollers 20 which press the shell material of the fabric together to form a closed film.
  • rollers 20 which press the shell material of the fabric together to form a closed film.
  • several softening stations or rollers can be provided.
  • the finished film 21 is drawn through the calender with the help of the driver rollers 22.
  • a support fabric 25 is inserted between two finished films 23, 24 and then pressed under heat to form the finished film composite 26 (FIG. 10).
  • a hot support fabric 28 is placed over a finished sheet 27.
  • the film material softens at the contact points and the fabric sinks into the liquefied plastic. This process can be mechanically supported if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Reinforced Plastic Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

Afin de produire des feuilles en matière plastique renforcée, on utilise un tissu dont les fils de sortie (1) sont constitués d'une âme (2) et d'une gaine en matière plastique (3). Le passage des gaines (3) dans une unité de calandrage permet de les élargir latéralement pour qu'elles forment ensuite une feuille fermée et renforcée (4).
PCT/DE1997/002929 1996-12-17 1997-12-17 Feuille de matiere plastique renforcee WO1998027250A2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP97954698A EP0949991A2 (fr) 1996-12-17 1997-12-17 Feuille de matiere plastique renforcee

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19652503 1996-12-17
DE19652503.9 1996-12-17

Publications (2)

Publication Number Publication Date
WO1998027250A2 true WO1998027250A2 (fr) 1998-06-25
WO1998027250A3 WO1998027250A3 (fr) 1998-09-03

Family

ID=7815017

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1997/002929 WO1998027250A2 (fr) 1996-12-17 1997-12-17 Feuille de matiere plastique renforcee

Country Status (2)

Country Link
EP (1) EP0949991A2 (fr)
WO (1) WO1998027250A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127076A1 (de) * 2001-06-02 2003-03-06 Hartmut Ortlieb Gewebe, Gewirke oder Gelege aus Kunststoff, sowie Verfahren zur Herstellung eines solchen
WO2004000535A1 (fr) * 2002-06-22 2003-12-31 Hartmut Ortlieb Tissu, maillage ou structure en matiere plastique et leur procede de production
EP1914057A1 (fr) * 2006-10-17 2008-04-23 Inadco AB Procédé de fabrication de préimprégnés

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787570A (en) * 1954-03-17 1957-04-02 Gen Tire & Rubber Co Reinforced sheet material
US2979431A (en) * 1956-03-14 1961-04-11 Ralph T Hays Method and apparatus of producing re-enforced thermoplastic bodies
GB1098381A (en) * 1964-06-15 1968-01-10 Ici Ltd Reinforced plastic sheet
EP0192555A1 (fr) * 1985-02-12 1986-08-27 Schlumberger Industries Procédé de réalisation de membranes synthétiques pour compteur à gaz et compteur à gaz comportant une membrane obtenue par la mise en oeuvre dudit procédé
WO1989004247A1 (fr) * 1987-11-09 1989-05-18 Amelia Pessina Procede de production de feuilles thermoplastiques renforcees et appareil associe
EP0389798A2 (fr) * 1989-03-31 1990-10-03 General Electric Company Procédé pour imprégner un renforcement en fibres de verre avec une matière thermoplastique et pour fabriquer des objets à partir des fibres de verre imprégnées
US5139593A (en) * 1988-01-22 1992-08-18 Institut Textile De France Process for manufacturing a ribbon constituted by at least one yarn impregnated with a thermoplastics polymer
US5171502A (en) * 1990-09-25 1992-12-15 Sumitomo Rubber Industries Ltd. Method and apparatus for fabricating a rubberized wire sheet
US5427741A (en) * 1993-05-19 1995-06-27 Cem Corporation Pressure resistant reinforcing means for containers for materials to be microwave heated
US5466738A (en) * 1991-11-30 1995-11-14 Hoechst Aktiengesellschaft Mixtures of liquid crystalline copolymers and fluorothermoplastics, and use thereof

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2787570A (en) * 1954-03-17 1957-04-02 Gen Tire & Rubber Co Reinforced sheet material
US2979431A (en) * 1956-03-14 1961-04-11 Ralph T Hays Method and apparatus of producing re-enforced thermoplastic bodies
GB1098381A (en) * 1964-06-15 1968-01-10 Ici Ltd Reinforced plastic sheet
EP0192555A1 (fr) * 1985-02-12 1986-08-27 Schlumberger Industries Procédé de réalisation de membranes synthétiques pour compteur à gaz et compteur à gaz comportant une membrane obtenue par la mise en oeuvre dudit procédé
WO1989004247A1 (fr) * 1987-11-09 1989-05-18 Amelia Pessina Procede de production de feuilles thermoplastiques renforcees et appareil associe
US5139593A (en) * 1988-01-22 1992-08-18 Institut Textile De France Process for manufacturing a ribbon constituted by at least one yarn impregnated with a thermoplastics polymer
EP0389798A2 (fr) * 1989-03-31 1990-10-03 General Electric Company Procédé pour imprégner un renforcement en fibres de verre avec une matière thermoplastique et pour fabriquer des objets à partir des fibres de verre imprégnées
US5171502A (en) * 1990-09-25 1992-12-15 Sumitomo Rubber Industries Ltd. Method and apparatus for fabricating a rubberized wire sheet
US5466738A (en) * 1991-11-30 1995-11-14 Hoechst Aktiengesellschaft Mixtures of liquid crystalline copolymers and fluorothermoplastics, and use thereof
US5427741A (en) * 1993-05-19 1995-06-27 Cem Corporation Pressure resistant reinforcing means for containers for materials to be microwave heated

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10127076A1 (de) * 2001-06-02 2003-03-06 Hartmut Ortlieb Gewebe, Gewirke oder Gelege aus Kunststoff, sowie Verfahren zur Herstellung eines solchen
WO2004000535A1 (fr) * 2002-06-22 2003-12-31 Hartmut Ortlieb Tissu, maillage ou structure en matiere plastique et leur procede de production
EP1914057A1 (fr) * 2006-10-17 2008-04-23 Inadco AB Procédé de fabrication de préimprégnés

Also Published As

Publication number Publication date
EP0949991A2 (fr) 1999-10-20
WO1998027250A3 (fr) 1998-09-03

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