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Insect Resist Finishes .

Finishing of Textiles. Insect Resist Finishes. Main Points. Introduction . - 1 Mechanisms of Insect Resist Finishes. - 2 Chemistry of Insect Resist Finishes . - 3 ِِِ Application of Insect Resist Finishes . - 4

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Insect Resist Finishes .

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  1. Finishing of Textiles . Insect Resist Finishes.

  2. Main Points . Introduction . -1 Mechanisms of Insect Resist Finishes. -2 Chemistry of Insect Resist Finishes . -3 ِِِApplication of Insect Resist Finishes . -4 ُEvaluation of Insect Resist Finishes . -5 Troubleshooting for Insect Resist Finishes . -6 7- Dust mites.

  3. Introduction . Insect resist finishes Chemical treatments Wool Other animal fibres

  4. Dust mites

  5. Fur beetle Keratin-digesting pests Carpet beetle The clothes moth Brown house moth Moth populations can increase dramattically in arelatively short time .

  6. - Various chemicals have been used to control damage from larval attack on wool The carpet industry. -1 Insect resist finishes . The carpet industry . -1 2-Floor coverings . 3- blankets&uniforms . 4-upholstery fabrics

  7. Mechanisms of insect resist finishes . Insect resist finishes Poisons Nerve poisons

  8. - Interfere with the keratin digesting process of the larvae. Poisons Killing the feeding larvae .- - By blocking enzymes need for digestion. -lower environmental hazard than nerve poisons. -Not effective against some pests .

  9. Nerve Poisons - Control agents . -Affecting a broader range of insects -More rapidly biodegraded than poisons . -Less durabillity .

  10. Chemistry of insect resist finishes . Flucofenuron Chlorinated triphenyl methane slucofenuron chlorphenylids

  11. Dieldrin . 1- One of the original nerve poisons. Permethrin . 1- very effective against moth larvae. 2-Less effect on Anthrenus beetles. 2-Higly toxic to mammals. 3- combination products of permthrin and hexahydropyrimidine derivatives. 3- Banned in most countries

  12. Application of insect resist finishes. Insect resist finish During spining During Dyeing During scouring

  13. During dyeing - The best light and wet fastness properties The finish is able fully penetrate the fibres -Exhaust well to nylon. -cholrphenylid drivatives. -Leaving wool unprotected. -Permethrin-based products . - Distribute them selves more uniformly between two fibres .

  14. During Scouring . -For carpets, blankets &upholstery. -Do not completely penetrate the fibres. - Lower temperatures & shorter time for treatment in process . - So fastness properties are not durable .

  15. During Spinning . - Combine the finish with spinning lubricants . -Then to apply the combination to loose wool prior to spinning -Produces yarns with only superficial treatment . - Much lower fastness .

  16. Evaluation.

  17. Troubleshooting . 1-Exposure to light , dry cleaning and shampooing can reduce the effectiveness of finish . 2- Finish baths that are not completely depleted of insect finishes. 3-Special are must be taken to prevent release of these insect poisons to the environment .

  18. Finishes for protection from dust mites . Pillows ,bedding and quilts. upholstery Dust mites Mattresses carpets

  19. Protection from dust mites. - Micro encapsulation is another interesting possibility for application.

  20. Conclusion . Insect resist finish . Mechanisms of insect resist finishes . Chemistry of insect resist finishes . Application of insect resist finishes . Evaluation of insect resist finishes . Troubleshooting of insect resist finishes . Dust mites .

  21. Thank you

  22. Any questions

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