Insecticidal thread
OwnerMikkel Vestergaard Frandseninventor
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Abstract
An insecticidal thread comprising a first type of filaments and a second type of filaments according to the invention. The first type of filaments has an insecticide or a synergist or both incorporated in a polymeric material of the first type of filaments. The second type has an insecticide or synergist or both incorporated in a polymeric material of the second type of filaments. The content of insecticide or synergist in the second type of filaments is different from the content of insecticide or synergist of the first type of filaments. Alternatively, the thread is an extruded monofilament with a first and a second part with insecticide and/or synergist.
Claims40
An insecticidal thread having a first and a second cross sectional part, the first part having an insecticide, an insect sterilising agent, an entomopathogen, or a synergist or a combination thereof incorporated in a polymeric material of the first part, the second part being free from insecticide, insect sterilising agent, entomopathogen, and synergist, or the second part having an insecticide, an insect sterilising agent, an entomopathogen, or synergist or a combination thereof incorporated in a polymeric material of the second part, wherein the content of insecticide, insect sterilising agent, entomopathogen, or synergist or combination thereof in the second part is different from the content of insecticide, insect sterilising agent, entomopathogen, or synergist or combination thereof in the first part.
An insecticidal thread according to any preceding claim, comprising at least one further type of filaments, the content of insecticide or synergist in the further type of filaments being different from the content of insecticide or synergist of the first and second type of filaments.
An insecticidal thread according to any preceding claim, wherein the first type of filaments contains a first insecticide but no synergist, and the second type of filaments contain a synergist.
An insecticidal thread according to any preceding claim, wherein the insecticide or insecticides and the synergist are incorporated migratably in the polymeric material for gradual migration from inside the material to the surface of the material.
An insecticidal thread according to any preceding claim, wherein the polymeric material comprises a UV protecting agent for protection of the insecticide from UV degradation.
An insecticidal thread according to any preceding claim, wherein the thread is coated with an insecticidal film.
An insecticidal thread according to any preceding claim, wherein the material is polyester.
An insecticidal thread according to any preceding claim, wherein the first type of filaments contains a pyrethroid.
An insecticidal thread according to any preceding claim, wherein the second type of filaments contains PBO.
Use of a thread according to any preceding claims for an insecticidal barrier.
A method for production of a multifilament yarn, the method comprising extruding multi-filaments in an extruder through an extrusion spinneret with a plurality of openings, wherein the material for the first type of filaments is provided over part of the plurality of spinneret openings and the material for the second type of filaments is provided over another part of the plurality of openings.
Dependencies are inferred from the claim text.