WO1996003311A1 - Protection anti-salissures destinee a des structures immergees - Google Patents

Protection anti-salissures destinee a des structures immergees Download PDF

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Publication number
WO1996003311A1
WO1996003311A1 PCT/SE1995/000894 SE9500894W WO9603311A1 WO 1996003311 A1 WO1996003311 A1 WO 1996003311A1 SE 9500894 W SE9500894 W SE 9500894W WO 9603311 A1 WO9603311 A1 WO 9603311A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibre
bacteria
fibres
ship
microorganisms
Prior art date
Application number
PCT/SE1995/000894
Other languages
English (en)
Inventor
Gunnar Forsberg
Original Assignee
Sealflock Aktiebolag
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 Aktiebolag filed Critical Sealflock Aktiebolag
Priority to AU31237/95A priority Critical patent/AU3123795A/en
Publication of WO1996003311A1 publication Critical patent/WO1996003311A1/fr

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 ships and other marine constructions which at least partly extend below the water surface.
  • the word "marine” is here used not only for objects in sea water but also in sweet water in lakes, rivers etc.
  • the invention particularly refers to treatment of surfaces below the water line to prevent fouling and maintain low friction for parts that move in the water.
  • the invention also refers to treatment for preventing overgrowth on fishing tackle and other constructions that primarily are made of fibre material.
  • 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 microorganisms that either themselves prevent, absorb or
  • CONFIRMATION 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 form an appropriate environment for different types of bacteria and other microorganisms. 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, waxes, bacteria or other microorganisms 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 microorganisms 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 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 mm 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 applie on surf that are made of fibre material or whi.. earlier hav .. '-----'ted ,.-- x fi x **lock, but ⁇ ._ is also possibl -o p. -.ireat the fibres with ..he 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. Advantages:
  • Figure 1 shows schematically bacteria adhered to fibers
  • Figure 2 shows an electron micrograph photo of D2 cells colonizing the outer part of a bunch of fibres
  • Figure 3 shows D2 cells colonizing fibres inside a bunch of fibres
  • Figures 4 and 5 show close up photos of D2 cells colonizing a fibre
  • FIG. 6 shows samples from test with bacteria D2
  • Figure 7 shows samples from test with seaweed Delicea.
  • Tubes with various types of flockfibres where coated with extract from D2 and Delicea. Untreated tubes having only flockfibers where put into the sea together with the treated tubes for a period of 7 weeks in an area with controlled and severe fouling in Sydney, Australia.
  • tubes C are control tubes with untreated flock
  • tube B in Figure 6 is treated with bacteria D2
  • tube A in Figure 7 is also treated with Seaweed Delicea.

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

En utilisant des substances marines naturelles qui préviennent les surcroissances, on peut obtenir une protection très efficace sans recourir à des substances éco-toxiques. Des examples de telles substances naturelles sont celles dérivées d'algues, qui contiennent un élément prévenant les surcroissances, ou celles dérivées de bactéries ou autres micro-organismes qui, par elles-mêmes, préviennent ou absorbent des plantes ou animaux nuisibles ou s'en délectent, ou qui contiennent un élément prévenant ces surcroissances. De telles substances sont liées aux structures marines qui sont constituées ou revêtues d'un matériau fibreux.
PCT/SE1995/000894 1994-07-28 1995-07-28 Protection anti-salissures destinee a des structures immergees WO1996003311A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31237/95A AU3123795A (en) 1994-07-28 1995-07-28 Fouling protection for constructions in water

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
WO1996003311A1 true WO1996003311A1 (fr) 1996-02-08

Family

ID=20394813

Family Applications (2)

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

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000895 WO1996003312A1 (fr) 1994-07-28 1995-07-28 Application d'une couche durable

Country Status (3)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1170359A1 (fr) * 2000-07-07 2002-01-09 Nippon Paint Co., Ltd. Microorganismes produisant un biojelly, peinture contenant ces microorganismes et procédé d' anti-sallissure
US20130108819A1 (en) * 2010-07-02 2013-05-02 Ifremer (Institut Francais De Recherche Pour L'exploitation De La Mer) Exopolysaccharides for preventing and controlling the formation of biofilms
EP2678218A1 (fr) * 2011-02-25 2014-01-01 Renolit SE Procédé de protection de surfaces contre les salissures

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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1170359A1 (fr) * 2000-07-07 2002-01-09 Nippon Paint Co., Ltd. Microorganismes produisant un biojelly, peinture contenant ces microorganismes et procédé d' anti-sallissure
US6764846B2 (en) 2000-07-07 2004-07-20 Nippon Paint Co., Ltd. Biojelly-producing microorganism, microorganism-containing coating, microorganism-containing coating film
US20130108819A1 (en) * 2010-07-02 2013-05-02 Ifremer (Institut Francais De Recherche Pour L'exploitation De La Mer) Exopolysaccharides for preventing and controlling the formation of biofilms
EP2678218A1 (fr) * 2011-02-25 2014-01-01 Renolit SE Procédé de protection de surfaces contre les salissures

Also Published As

Publication number Publication date
SE503048C2 (sv) 1996-03-18
AU3123895A (en) 1996-02-22
WO1996003312A1 (fr) 1996-02-08
SE9402584L (sv) 1996-01-29
AU3123795A (en) 1996-02-22
SE9402584D0 (sv) 1994-07-28

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