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

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Presentation on theme: "Insect Resist Finishes. Finishing of Textiles.. Main Points. Introduction. -1 Mechanisms of Insect Resist Finishes. -2 Chemistry of Insect Resist Finishes."— Presentation transcript:

1 Insect Resist Finishes. Finishing of Textiles.

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 Dust mites.

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

4 Dust mites Allergy Asthma Neurodermitis

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

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

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

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

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

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

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

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

13 During dyeing - The best light and wet fastness properties The finish is able fully penetrate the fibres -cholrphenylid drivatives. -Exhaust well to nylon. - 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. Microscopic methods Measure the weight loss of the treated fabrics Measure the weight of insect excrement.

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.

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

20 Protection. Lower room temp. Cleaning & washing Repeated airing

21 Protection from dust mites. Tight woven fabrics. - Micro encapsulation is another interesting possibility for application.

22 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.

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24 Any questions


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