Controlled release device for the preservation of wooden...

Details Controlled release device for the preservation of wooden... Controlled release device for the preservation of wooden...

B - Operations, Transporting

27

K

B27K 3/02 (2006.01)

Patent

CA 2320950

A method and device are disclosed which prevent the decay and deterioration of wooden objects caused by pests by using a controlled release device. This controlled release device utilizes polymers which incorporate pesticides. In the disclosed method, the controlled release device is placed proximate with the wood of the wooden object. The pesticide is gradually released from the device and absorbed into the wood structure. The pesticide absorbed by the wood creates a barrier or an exclusion zone to penetration by insects. The controlled release device maintains a minimal effective level of pesticide in the barrier or exclusion zone for a predetermined period of time.

Procédé et dispositif destinés à empêcher la décomposition et la détérioration d'objets en bois causées par des parasites, à l'aide d'un dispositif à libération régulée qui est constitué de polymères contenant des pesticides. Dans le procédé décrit, le dispositif à libération régulée est placé à proximité du bois. Le pesticide est progressivement libéré du dispositif et absorbé par la structure en bois. Le pesticide absorbé par le bois crée une barrière ou une zone d'exclusion empêchant la pénétration des insectes. Ledit dispositif maintient un taux minimal efficace de pesticides dans la barrière ou zone d'exclusion pendant une période prédéterminée.

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