Teknologian Tutkimuskeskus Vtt

Tampere University of Technology

Sp Technical Research Institute of Sweden

Janne Häkli

Kaarle Jaakkola

Kaj Nummila

Juha-Matti Saari

Kari Kolppo

Bo Axelsson

The invention relates to a transponder for marking wood material and a method of manufacturing thereof. The method comprises embedding an RFID microchip and antenna into a casing essentially consisting of one or more biodegradable materials. According to the invention the embedding step comprises forming the antenna by layering conductive material directly on biodegradable material, and covering the antenna by biodegradable material. By means of the invention, environmentally friendly and pulping-compatible transponders can be manufactured, for example, for aiding the logistics of forest industry.

Radio-frequency transponder for marking wood products and method of manufacturing thereof

The invention concerns a transponder (), kit and method for marking wood material, such as logs. The transponder comprises a rigid casing adapted to be inserted into the wood material by means of impact, the casing comprising a wedge-shaped first edge () adapted to penetrate into the wood material due to said impact, and a second edge () opposite to the first edge, the first and second edges () defining an insertion direction of the transponder, and radio-frequency trans-ponding means () covered by the casing. According to the invention, the casing is elongated in a direction perpendicular to the insertion direction. The transponder is easily applicable into a log and stays well within the log.

Transponder, transponder kit, method of applying the transponder and product comprising the transponder

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Espoo, Finland

Janne Häkli