| 摘要 |
A system for protecting trees (1) and structures from infestation by crawlin g or climbing insects by attaching an insect barrier to the wall surface of th e object to be protected. The barrier consists of a belt means (2), which may be made from a plastic sheet material and may be wrapped around the object to b e protected, including a contact means that engages the surface of the object. The contact means may have a deformable thickness, such as provided by a lay er of a non-woven fabric, to prent the passage of insects between the barrier a nd the surface of the objet. The free ends of the belt means are secured to eac h other to retain the belt means against the surface of the tree and engage th e contact means against the tree surface. The belt means has slippery surface means (3), having a low coefficient of friction with respect to insects, tha t prevents the travel of insects on the belt means, preventing them from proceeding over the belt means and infesting the tree or structure to be protected. The slippery surface means may be provided by application of a coating of a fluoro-polymer, such as poly-tetra-fluoro ethylene (PTFE), to t he belt means or may be otherwise suitably attached to or integrally formed wit h the belt means.
|
