Wood preservation method and preservation means for use in said method

A method of manufacturing a tubular wood preservation means which is applied in a hole drilled in a wood construction to be preserved and which comprises a wrapping means which is capillary, hygroscopic, and swellable when moistened and an active compound in the form of a particulate enclosed in the wrapping means whereby spreading of the active compound occurs only when the wood is sufficiently wet and the wrapping means swells so that the active compound then diffuses through the wrapping means, said method comprising the steps of:

• applying an adhesive to a rectangular sheet which subsequently forms the wrapping means;
• sprinkling the particulate onto the adhesive;
• folding the sheet with the particulate thereon to form a laminate;
• and
• coiling the laminate to form the tubular wood preservation means.

A method of manufacturing a tubular wood preservation means which is placed in a hole drilled in a wood construction to be preserved and which comprises a wrapping means which is capillary, hygroscopic, and swellable when moistened and an active compound in the form of a paste or gel enclosed in the wrapping means whereby spreading of the active compound occurs only when the wood is sufficiently wet and the wrapping means swells so that the active compound then diffuses through the wrapping means, said method comprising the steps of:

• extruding the active compound onto a rectangular sheet including an edge flap over at least part of a periphery thereof which sheet subsequently forms the wrapping means;
• folding of the edge flap over a remaining portion of the sheet to form a laminate;
• and
• coiling the laminate to form the tubular wood preservation means.

A method of manufacturing a flat wood preservation means which is applied onto a wood construction to be preserved and which comprises a wrapping means which is capillary, hygroscopic, and swellable when moistened and an active compound in the form of a paste or gel enclosed in the wrapping means whereby spreading of the active compound occurs only when the wood is sufficiently wet and the wrapping means swells so that the active compound then diffuses through the wrapping means, said method comprising the steps of:

• extruding the active compound onto a rectangular sheet including a fold panel and fold edges which sheet subsequently forms the wrapping means;
• folding of the fold panel over the rectangular sheet;
• and
• folding the fold edges over a remaining portion of the sheet to form a flat wood preservation laminate.

A method of preserving wooden utility poles comprising the steps of:

• drilling a hole at an air/soil transition area of the pole;
• placing in the hole a wood preservation means comprising a cylindrical tube which is capillary, hygroscopic, and swellable when moistened and an active compound in the form of a particulate which is enclosed in said tube whereby spreading of said active compound occurs only when the wood is sufficiently wet and said tube swells so that the active compound then diffuses through said tube;
• and
• protecting the wood preservation means in the hole by covering the hole with a bandage.