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WO1996003312A1 - Application d'une couche durable - Google Patents

Application d'une couche durable Download PDF

Info

Publication number
WO1996003312A1
WO1996003312A1 PCT/SE1995/000895 SE9500895W WO9603312A1 WO 1996003312 A1 WO1996003312 A1 WO 1996003312A1 SE 9500895 W SE9500895 W SE 9500895W WO 9603312 A1 WO9603312 A1 WO 9603312A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibre
fibres
bacteria
substances
organisms
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
PCT/SE1995/000895
Other languages
English (en)
Inventor
Gunnar Forsberg
Kjell K. Alm
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.)
Sealflock AB
Original Assignee
Sealflock AB
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 Sealflock AB filed Critical Sealflock AB
Priority to AU31238/95A priority Critical patent/AU3123895A/en
Publication of WO1996003312A1 publication Critical patent/WO1996003312A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
    • B63B59/04—Preventing hull fouling

Definitions

  • the present invention refers to application of a durable layer, film or the like of bacteria, other micro-organisms or one or more substances on to a surface.
  • One object of the invention is that the layer will adhere better to the surface and remain longer despite the influence of wind and weather,' mechanical wear or other external influence whereby the film or layer for a longer time can keep the function, for which it has been applied.
  • the surface is coated with fibre flock and the substances, bacteria or other micro-organisms which are to be applied on to the surface are added to the fibre material before, during or after the application of the fibre material.
  • Examples of fields in which the invention may be used is for protection of plants from animals, noxious insects and the like.
  • the flock mainly works as a protection for the preparation so that it is preserved and gives long-time effect.
  • Another example is when you wish to keep a layer of wax on a surface.
  • One further example is keeping of a layer of bacteria on a surface, for instance under water for anti- fouling. This example will be described more in detail as an embodiment, but the advantages of the invention can also be utilized in air or in other environments besides water.
  • the effect of the fibre flock is primarily to form an environment in which the adherence of the bacteria, the micro-organisms or the substances is improved compared to the surface being principally plane and smooth.
  • An especially good effect can be obtained when the fibre flock is of such a density that the space between the fibres is mainly filled, but the substances or the like are not adhering to the rest of the fibres.
  • One embodiment of the invention constitutes a fouling protection for marine constructions. This is particularly refering to treatment of surfaces below the water line in order to prevent fouling and maintain low friction for parts that move in the water. This embodiment also refers to treatment for preventing overgrowth on fishing tackle and other constructions that primarily are made of fibre material. Until now one has mainly used toxic colors for this purpose. As is evident from the patent application PCT/SE93/00504 one has also tested to cover surfaces that are exposed to fouling, with fibre flock, which has also proved to give good results. With extremely severe fouling merely coating with fibre flock on the hull surfaces has not given a sufficiently good protection. In certain cases, a completion of the protection can be needed.
  • natural marine substances that are overgrowth preventing, a very efficient protection can be obtained without need for environmental toxines to be utilized.
  • natural substances are such that are based on seaweed, in which a substance is present that prevents overgrowth, or such that are based on bacteria or other micro-organisms that either themselves prevent, absorb or gormandize on harmful plants or animals or contain a substance that prevents overgrowth.
  • These substances are bound to the marine construction either by this being made of a fibre material or by it being provided with a surface layer of a fibre material.
  • fibres that are flocked by known technique an active surface is formed that can be enlarged by 30 - 50 times in relation to the area of the base. It has also turned out that the fibre flock forms an appropriate environment for different types of bacteria and other micro-organisms. Bacteria which have a favourable influence on those plants or animals which constitute a problem are previously known, but before the origin of the present invention it has not been possible to create an environment in which the bacteria is retained on a surface so that a long-term action is obtained.
  • a fibre flocked surface has proved to form such an environment that solves the problem to retain active substances, bacteria or other micro-organisms on surfaces which are located in connection to or under the water.
  • the problem of severe overgrowth on for instance hull surfaces is solved by a fibre flocked surface in which an appropriate substance, bacteria or other micro-organisms have been added.
  • the method to cover a surface with fibre flock is well known. It consists in that a surface first is coated with an adhesive whereupon electrically charged fibres are made to land in the adhesive and stick there.
  • the adhesive is often a two component resin glue and the fibres are generally synthetic fibres of for instance polyamide.
  • the fibres which may come into question for the present invention are not limited to any special type, but also for instance coal fibres, glass fibres or non-synthetic fibres may be suitable. Especially to retain bacteria such fibres are suitable that bind a smaller amount of water such as for instance polyamide, which normally absorbs 2 - 4 % of water. Even hollow fibres can be expected to have good characteristics to retain these substances and organisms.
  • a large amount of fibres is utilized which by electrostatic application to a large part will be fixed perpendicularly against the base.
  • the fibre density can be in the range of 50-300 fibres per square mm, preferably more than 150 fibres per square mm, with a fibre thickness less than 0.1 mm, preferably less than 0.05 m and a length in the range of 0.5-5 mm, preferably less than 3 mm.
  • the marine construction in itself is made of a yarn or a net of fibre material, whereby the fibre length is a good deal longer. Since these fibres are of an appropriate type to bind the actual anti-fouling substance, no fibre flock is required to obtain the intended effect according to the invention. In other cases a fibre flocking can be appropriate even when the marine construction is of fibre material.
  • Bacteria that can be used in connection with the present invention can for instance be of the family Alteromonas, but also other bacteria or microorganisms can be used according to the invention.
  • the bacteria can be applied on surfaces that are made of fibre material or which earlier have been coated with fibre flock, but it is also possible to pretreat the fibres with the bacteria in question before they are applied through flocking or before they are processed to a yarn, net or the like. It is probably possible to retain the culture of bacteria in the fibre flocked surface during a long period, even during periods of winter keeping during cold weather and the like. Bacteria which can be of interest in this connection can be kept freeze-dried during a long period. Other substances can also either be applied on earlier fibre flocked surfaces or be added to the fibre before this is applied.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Laminated Bodies (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne un procédé d'application d'une couche durable, telle qu'une pellicule ou similaire, sur une surface. Grâce à l'invention, la couche adhère mieux et plus longtemps à cette surface malgré les intempéries, l'usure mécanique ou d'autres influences externes, et remplit plus longtemps les fonctions pour lesquelles elle a été appliquée. La surface est recouverte d'un flocage de fibres et les substances, bactéries ou autres micro-organismes à appliquer sur cette surface, sont ajoutés au matériau fibreux avant, pendant ou après l'opération d'enduction avec ce matériau.
PCT/SE1995/000895 1994-07-28 1995-07-28 Application d'une couche durable Ceased WO1996003312A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31238/95A AU3123895A (en) 1994-07-28 1995-07-28 Application of a durable layer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9402584A SE503048C2 (sv) 1994-07-28 1994-07-28 Beväxningsskydd för marina konstruktioner
SE9402584-8 1994-07-28

Publications (1)

Publication Number Publication Date
WO1996003312A1 true WO1996003312A1 (fr) 1996-02-08

Family

ID=20394813

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/SE1995/000894 Ceased WO1996003311A1 (fr) 1994-07-28 1995-07-28 Protection anti-salissures destinee a des structures immergees
PCT/SE1995/000895 Ceased WO1996003312A1 (fr) 1994-07-28 1995-07-28 Application d'une couche durable

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000894 Ceased WO1996003311A1 (fr) 1994-07-28 1995-07-28 Protection anti-salissures destinee a des structures immergees

Country Status (3)

Country Link
AU (2) AU3123795A (fr)
SE (1) SE503048C2 (fr)
WO (2) WO1996003311A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1170359B1 (fr) * 2000-07-07 2004-10-13 Nippon Paint Co., Ltd. Microorganismes produisant un biojelly, peinture contenant ces microorganismes et procédé d' anti-sallissure
WO2012001164A1 (fr) * 2010-07-02 2012-01-05 Ifremer (Institut Français De Recherche Pour L'exploitation De La Mer) Exopolysaccharides pour la prévention et la lutte contre la formation de biofilms
DE102011012517A1 (de) * 2011-02-25 2012-08-30 Renolit Ag Verfahren zum Schutz von Oberflächen vor Bewuchs

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993025432A1 (fr) * 1992-06-05 1993-12-23 Juristbyrån Indirekt Ab Revetement pour constructions navales

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993025432A1 (fr) * 1992-06-05 1993-12-23 Juristbyrån Indirekt Ab Revetement pour constructions navales

Also Published As

Publication number Publication date
AU3123895A (en) 1996-02-22
WO1996003311A1 (fr) 1996-02-08
AU3123795A (en) 1996-02-22
SE503048C2 (sv) 1996-03-18
SE9402584L (sv) 1996-01-29
SE9402584D0 (sv) 1994-07-28

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