EP2170046A2 - Moule - Google Patents

Moule

Info

Publication number
EP2170046A2
EP2170046A2 EP08785275A EP08785275A EP2170046A2 EP 2170046 A2 EP2170046 A2 EP 2170046A2 EP 08785275 A EP08785275 A EP 08785275A EP 08785275 A EP08785275 A EP 08785275A EP 2170046 A2 EP2170046 A2 EP 2170046A2
Authority
EP
European Patent Office
Prior art keywords
layer
biofilm
particles
inhibiting
ions
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
EP08785275A
Other languages
German (de)
English (en)
Inventor
Roland Hendel
Guido Kania
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.)
Rehau Automotive SE and Co KG
Original Assignee
Rehau AG and Co
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 Rehau AG and Co filed Critical Rehau AG and Co
Publication of EP2170046A2 publication Critical patent/EP2170046A2/fr
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/08—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing solids as carriers or diluents
    • A01N25/10—Macromolecular compounds
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
    • Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
    • Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
    • Y10T428/1393—Multilayer [continuous layer]

Definitions

  • the present invention relates to a plastic molding, preferably a plastic pipe, in particular for the transport or storage of fluids, which comprises at least one layer containing zeolite particles, in which at least a portion of ion-exchangeable ions have been replaced by biofilm-inhibiting ions.
  • plastics for the transport or storage of liquid and / or gaseous media.
  • Such plastic pipes serve, for example, the transport of drinking water from drinking water reservoirs to the end user, but also the return of wastewater from the end user to wastewater disposal companies.
  • Organisms may be plants such as algae, while microorganisms include, for example, bacteria and fungi.
  • the corresponding deposits lead on the one hand to a reduced flow cross-section, and on the other hand to a negative influence on the quality of the transported drinking water. This can even lead to an epidemic risk if the biofilms formed contain pathogenic germs.
  • the microorganisms of the biofilm cause biologically induced damage to the tube material during prolonged exposure. In this context, for example, the degradation of the plastic by mushrooms may be mentioned.
  • zeolite particles with biofilm-inhibiting ions can inhibit or suppress the formation of a biofilm.
  • a disadvantage of this method for preventing the formation of a biofilm is the fact that present in the zeolite particles biofilm-inhibiting ions dissolve relatively quickly from these and migrate to the corresponding molding surface, so that the biofilm-inhibiting ions are rapidly consumed and after a short time biofilm-inhibiting effect is lost.
  • the invention is therefore an object of the invention to provide a plastic molding, preferably a plastic pipe, which effectively counteracts deposition of microorganisms or pollutants, and generally the structure of a biofilm, for a long period of time and is easy and inexpensive to manufacture.
  • the plastic molded part according to the invention is characterized in that the layer further contains nanofil size biofilm-inhibiting particles in addition to the zeolite particles. It has been found that the combination of zeolite particles with biofilm-inhibiting ions and biofilm-inhibiting particles in nanometer size, a very long-lasting biofilmhemmende effect can be achieved. Initially, the use of the plastic tube initially leads to migration of the biofilm-inhibiting ions, which dissolve out of the zeolite particles. Thus, practically from the very beginning, rapid release of the ions and their correspondingly rapid migration to the surface of the plastic pipe result in highly effective protection against the attachment of organisms or microorganisms.
  • the ions of the zeolite particles and the biofilm-inhibiting particles in nanometer size complement each other ideally, because as the one, ie the ions of the zeolite particles are used up, the ions of the biofilm-inhibiting particles come to fruition, the effect of which lasts for a very long time.
  • biofilm-inhibiting ions may comprise copper ions and / or zinc ions and / or silver ions
  • biofilm-inhibiting particles may comprise copper and / or zinc and / or silver.
  • the materials copper, zinc and silver or their ions have particularly favorable (antimicrobial) properties in terms of avoiding the formation of a biofilm, they are preferably selected.
  • the biofilm-inhibiting particles may have a largest diameter between 1 and 100 nm, preferably 10 and 50 nm. It has been found that the particles have a particularly advantageous effect in this size range. Furthermore, it may be advantageous if the concentration of zeolite particles and biofilm-inhibiting particles in the sum of 0.01 to 15 weight percent, preferably 0.1 to 5 weight percent, based on the layer of the plastic tube containing them is. The amount of zeolite particles and biofilm-inhibiting particles is advantageously chosen in a ratio of 20:80 to 80:20.
  • the layer may comprise a matrix material in which the zeolite particles and the biofilm-inhibiting particles are embedded. As a result, the particles are held securely and firmly and fixed in the plastic tube.
  • the matrix material comprises and preferably consists of a thermoplastic polymer such as polyethylene, crosslinked polyethylene (PE-X), polypropylene, polybutene or polyvinyl chloride and copolymers thereof. These materials have favorable mechanical and physical or chemical properties and are also relatively inexpensive with ease of processing.
  • a thermoplastic polymer such as polyethylene, crosslinked polyethylene (PE-X), polypropylene, polybutene or polyvinyl chloride and copolymers thereof.
  • the zeolite particles and / or the biofilm-inhibiting particles are distributed uniformly in the matrix material, or that the concentration of the zeolite particles and / or the biofilm-inhibiting particles in nanometer size starting from the outer surface of the layer facing away from the fluid in the direction of the Fluid-facing inner surface of the layer continuously increases or decreases.
  • the distribution of the zeolite particles and / or the biofilm-inhibiting particles can be varied or adapted. For example, if there is a desire to protect both the inside surface (i.e., the surface in contact with the fluid) and the outside surface of a pipe from biofilm deposition, then a homogeneous distribution is desirable.
  • the increased concentration of the zeolite particles or of the biofilm-inhibiting particles in the vicinity of the inner surface offers advantages.
  • the concentration of zeolite particles and / or biofilm inhibiting particles may be advantageous for the concentration of zeolite particles and / or biofilm inhibiting particles to increase from the center of the layer toward the inner surface and outer surface.
  • the concentration of zeolite particles with biofilm-inhibiting ions and biofilm-inhibiting particles in nanometer size can have a steady gradient or a non-continuous gradient, ie a jump in the layer.
  • the concentration of zeolite particles with biofilm-inhibiting ions and biofilm-inhibiting particles in nanometer size can be selected such that a first partial layer is advantageously present in the layer, the zeolite particles with biofilm-inhibiting ions and a second partial layer having biofilm-inhibiting nanoscale particles.
  • An unsteady gradient, which has a jump can advantageously be effective if the migration of the ions is to occur with a delay.
  • the plastic tube is two- or multi-layered, wherein the innermost, the fluid-facing layer is formed by the described in the above-described advantageous embodiments layer, and the adjoining outer layer or the adjoining outer layers comprising or having a polymeric material.
  • the two- or multi-layered construction makes it possible to realize a more robust and more mechanically stressable pipe, wherein the respective layers can be designed in the sense of the respective intended function.
  • the inner layer is designed so that it prevents the attachment of microorganisms or pollutants
  • the outer layer adjoining outer layer for example, is designed to ensure a high mechanical stability of the tube.
  • Layers comprising a thermoplastic polymer such as polyethylene, crosslinked polyethylene (PE-X), polypropylene, polybutene or polyvinyl chloride and copolymers thereof and preferably consists of this or consist of.
  • a thermoplastic polymer such as polyethylene, crosslinked polyethylene (PE-X), polypropylene, polybutene or polyvinyl chloride and copolymers thereof and preferably consists of this or consist of.
  • PE-X crosslinked polyethylene
  • polypropylene polypropylene
  • polybutene polyvinyl chloride and copolymers thereof
  • the tube is two or more layers and is made by a co-extrusion process. This is a particularly effective and economical process for producing multilayer pipes.
  • the layer of zeolite particles with biofilm-inhibiting ions and biofilm-inhibiting nanometer-sized particles is prepared in a process in which a fluid is passed into the tube lumen and precipitates on the inner surface to form the layer.
  • the fluid may be a liquid in the form of, for example, a lacquer which contains the zeolite particles and biofilm-inhibiting particles.
  • the layer formation can be carried out from a gas phase.
  • Such a technique for producing coatings is very effective and economically usable for producing multilayer pipes.
  • the tube is two- or multi-layered and the layer thickness of the innermost, the fluid-facing layer is between 1 and 10% of the wall thickness of the tube.
  • the desired anti-tarnishing function of the innermost layer is ensured.
  • this results in a relatively low material consumption for the innermost layer, which has a cost-reducing effect on the production of the tube.
  • the mechanical material behavior of the entire tube is only insignificantly influenced by it.
  • the layer thickness of the innermost layer facing the fluid is between 1 and 10% of the wall thickness of the tube.
  • FIG. 1 is a sectional view of a single-layer pipe according to the invention
  • Fig. 2 sectional view of a two-layer pipe according to the invention.
  • the not-to-scale representation according to FIG. 1 shows a section through a single-layered tube 1 according to the invention, the tube 1 having a layer 2 with an outer surface 5 and an inner surface 6.
  • the layer 2 contains as the matrix material polyethylene, in which the zeolite particles 3 and the biofilm-inhibiting particles 4 are embedded.
  • the zeolite particles 3 as biofilm-inhibiting ions silver ions, while the biofilmhemmenden particles 4 are made of silver and have a maximum diameter of 10 nm.
  • the concentration of the zeolite particles and the biofilm-inhibiting particles is greatest in the area of the inner surface 6 and steadily decreases in the direction of the outer surface 5.
  • the inner layer 2 here corresponds to that shown in FIG. 1 and has the same structure.
  • the outer layer 7 is made of PP.
  • the inner layer has a thickness of about 1 mm, while the wall thickness of the tube is about 15 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Pest Control & Pesticides (AREA)
  • Toxicology (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Plant Pathology (AREA)
  • Agronomy & Crop Science (AREA)
  • Laminated Bodies (AREA)
  • Wrappers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)

Abstract

La présente invention concerne un moule en plastique, de préférence un tube en plastique, en particulier pour le transport ou l'entreposage de fluides, comprenant au moins une couche qui contient des particules de zéolithe, au moins une partie des ions pouvant être échangés ayant été remplacés par des ions inhibiteurs de biofilm. Le tube de plastique est caractérisé en ce que la couche et/ou les autres couches contiennent en outre des particules inhibitrices de biofilm de l'ordre du nanomètre.
EP08785275A 2007-08-03 2008-08-01 Moule Ceased EP2170046A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202007010891U DE202007010891U1 (de) 2007-08-03 2007-08-03 Rohr
PCT/EP2008/006334 WO2009018963A2 (fr) 2007-08-03 2008-08-01 Moule

Publications (1)

Publication Number Publication Date
EP2170046A2 true EP2170046A2 (fr) 2010-04-07

Family

ID=40119346

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08785275A Ceased EP2170046A2 (fr) 2007-08-03 2008-08-01 Moule

Country Status (7)

Country Link
US (1) US20110236615A1 (fr)
EP (1) EP2170046A2 (fr)
CN (1) CN101795561A (fr)
CA (1) CA2695404A1 (fr)
DE (1) DE202007010891U1 (fr)
MX (1) MX2010001331A (fr)
WO (1) WO2009018963A2 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT508916B1 (de) 2009-11-06 2011-05-15 Hagleitner Hans Georg Spender zur abgabe von portionen eines fluids
DE202010006216U1 (de) 2010-04-29 2010-07-01 Hagleitner, Hans Georg Spender
DE102012106061A1 (de) * 2012-07-06 2014-01-09 Rehau Ag + Co Verwendung einer Polymerzusammensetzung
PL400068A1 (pl) 2012-07-20 2014-02-03 Future Spólka Z Ograniczona Odpowiedzialnoscia Sposób wytwarzania rur polipropylenowych
CN106151774A (zh) * 2016-07-25 2016-11-23 成都三环金属制品有限公司 一种聚丁烯（pb）玄武岩纤维增强供暖管材
WO2021162608A1 (fr) * 2020-02-14 2021-08-19 Orbital Systems Ab Système de distribution d'eau doté d'un pourvoir d'hygiénisation
DE102022102899A1 (de) * 2022-02-08 2023-08-10 Veritas Ag Fluidschlauch mit einer oberflächen-modifizierenden substanz

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828992A1 (fr) * 2001-08-28 2003-03-07 Alphacan Sa Tube bacteriostatique et procede de fabrication

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JPS59133235A (ja) 1983-01-21 1984-07-31 Kanebo Ltd 殺菌性ポリマー組成物及びその製造法
JP2503057B2 (ja) * 1988-09-27 1996-06-05 株式会社クラレ 抗菌性成形物及びその製造法
JPH04147848A (ja) 1990-10-11 1992-05-21 Dainippon Printing Co Ltd 抗菌性を有するチューブ容器
EP0677989B1 (fr) * 1991-08-09 1998-09-16 E.I. Du Pont De Nemours And Company Composition antimicrobienne, procede pour sa preparation et son utilisation
US6436422B1 (en) * 1998-11-23 2002-08-20 Agion Technologies L.L.C. Antibiotic hydrophilic polymer coating
US20050191355A1 (en) * 1999-05-27 2005-09-01 Foss Manufacturing Co., Inc. Anti-microbial and antifungal fluid conduits and methods of manufacture thereof
JP2005525985A (ja) * 2002-01-24 2005-09-02 カール−ツァイス−スティフツング 抗微生物性非水溶性ケイ酸ガラス粉末およびガラス粉末混合物
JP3826230B2 (ja) * 2002-10-30 2006-09-27 足立工業株式会社 理容鋏の製造方法
DE20306354U1 (de) * 2003-04-23 2003-08-07 Hesseldieck, Kai, 36364 Bad Salzschlirf Bauteil zur Führung einer Strömung
DE10350973B4 (de) * 2003-10-30 2013-12-19 Rehau Ag + Co. Rohr
KR100554087B1 (ko) 2004-03-13 2006-02-22 주식회사 아이팩 항균 튜브의 제조방법
DE102004054390A1 (de) * 2004-11-11 2006-05-18 Rehau Ag + Co Kupplungsleitung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828992A1 (fr) * 2001-08-28 2003-03-07 Alphacan Sa Tube bacteriostatique et procede de fabrication

Also Published As

Publication number Publication date
US20110236615A1 (en) 2011-09-29
WO2009018963A2 (fr) 2009-02-12
MX2010001331A (es) 2010-03-10
CA2695404A1 (fr) 2009-02-12
DE202007010891U1 (de) 2008-12-18
WO2009018963A3 (fr) 2009-05-28
CN101795561A (zh) 2010-08-04

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