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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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Problem Solving Through E-Mails with John Woon Latex Consultants Is Possible
可以通过电子邮件与JW乳胶顾问来解决问题

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Saturday, May 01, 2010

Adhesion to PV Latex Coating

Manufacturer: In a particular application we are using a lightly filled Prevul Latex coating. A second coating based on a blend of synthetic Latices(Acrylic & CSBR) is applied to the first coat after drying. We are finding the adhesion to the Prevul is not very strong, and seems to get weaker after some time. We tried adhesion promoters with limited success. We are seeking advice how to achieve a strong intercoat adhesion, or what type of synthetic polymers form strong bonds with the dried and cured Prevul film.

John Woon (Senior Latex Consultant): This could probably be due to the difference in polarity between NR latex (PV) and acrylic/CSBR. I suggest you try adding a small level of either acrylic or CSBR into the PV before use bearing in mind that there could be some destabilisation of the PV as a result. If this happens, you should pre-stabilise the PV with some surfactants such as the non-ionic surfactants before blending with the synthetic latices.

Do not allow the PV to be too dry before applying the synthetic latex otherwise you would get poor bonding (adhesion).

For other details, please see my separate report on "Adhesion and Cohesion" especially Page 10 to Page 13.

Hope this helps. Do let me know the outcome.

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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

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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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The information and data contained in this site are believed to be accurate and reliable. However it is the responsibility of the visitors and readers to satisfy themselves that the information is workable under their own processing conditions. Hence the owners of this site make no warranties concerning the suitability of the information given in this site.

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