1. Insect Resist Finishes.
Finishing of Textiles .
Insect Resist Finishes.

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

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

4. Dust mites

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

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

7. Mechanisms of 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. 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. Permethrin . Dieldrin . 3- Banned in most countries
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.
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 .

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

21. Protection from dust mites.
- 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 .

23. Thank you

24. Any questions