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JW Latex Consultants (and Rubber Consultants,乳胶顾问) offer solutions to your problems in Natural Rubber latex and Synthetic Rubber latex processing and the manufacturing of latex products (condoms, catheters, medical gloves, baby teats and soothers, toy balloons etc) Quick answers through e-mails are possible at reasonable cost.

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Friday, July 28, 2006

Defoamer creates havoc in glove factory!

Manufacturer:We manufacture a range of different types of gloves using natural rubber and synthetic latices. In recent months, we have been encountering some surface defects that are causing havoc in our factory after using defoamer. Your advice please.

JohnWoon:Since defoamers work by virtue of their incompatibility with latex, this incompatibility could lead to defects such as fisheyes, craters, pinholes, oil spots, thin spots etc. This designed incompatibility is responsible for the inability of the latex to completely wet the incompatible component in the defoamer.

I have two strategies to propose: 1) keeping the existing defoamer and controlling its incompatibility 2) Select a new defoamer.

If you're happy with the performance of the defoamer as regards the reduction of webbing and air bubbles, try reducing the level. You could also increase the soap/surfactant(s) employed in the latex compound so as to achieve the same result. The surfactant approach works by reducing the interfacial tension between the defoamer droplet and the water leading to smaller droplets being formed. This approach may also cause a reduction in the interfacial tension between the droplet and the latex. The end result is better compatibility. However, while you're doing this, keep a watch over the webbing and foaming tendency of the latex. You don't want to revert to the situation that prompt you to add defoamer in the first place!

Alternatively, work closely with your defoamer suppliers to select another defoamer that has been formulated properly with the correct emulsifier/surfactant system so that the defoamer droplets formed when introduced into your latex compound are too small to create havoc but large enough to still control the webbing and air bubbles.

You are at the site for answers and solutions to all your problems in natural rubber latex processing and manufacturing of medical gloves, condoms, catheters, baby teats and baby pacfiers.

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Latex Gloves Educational Articles from the Malaysian Rubber Export Promotion Council

How do you select your medical gloves?

Rubber Chemicals: Carcinogenicity, Mutagenicity, Clastogenicity.

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Assessment of Latex Stability

Joule Effect

Poor Flocking Quality Of Household Gloves

Creaming of Latex

What is Vulcanization?

History of Latex Dipped Products

Applications of Prevulcanized Latex

Defoamer Creating Havoc in Glove Factory

Problems With Milling Rubber Chemicals

Medical Gloves From Guayule Latex

Introduction to SMG Gloves

 

 

Click on The Following Links to Read More Articles:

[Advantages of Vulcanization] [Applications of PV Latex] [Bacteria and Latex] [Chemical Toxicity] [Cross-Linking Density] [Biodegradability] [Black Articles] [Blooming] [Bouncing Ball] [Compression Set] [Condoms] [Creaming] [Defoamer] [FDA] [Fatty Acid Soaps] [Flame Retardant] [Flocking] [Food Packaging] [Glove Demand] [Glove Selection] [Guayule Latex] [History of Gloves] [Joul Effect] [Latex Stability] [Latex Thread] [Milling Problem] [MREPC Articles] [Nano Polymer Particles] [Nano ZnO] [Polychloroprene] [REACH] [SMG] [Storage Hardening] [Vulcanization] [Vytex] [Yulex]

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