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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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Send Your Enquiry and Orders To: woonsungliang@yahoo.com.sg

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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Monday, March 17, 2014

Secrets to Succesful Dipping for Toy Balloons

Manufacturer: We are toy balloons manufacturer who have just started commissioning our new dipping dipping line. We would appreciate very much if you could guide us on the "Do's and Don't's" on how to produce good quality balloons. Our full dipping parameters and video clips of our process have been sent to you.

John Woon (Senior Latex Consultant): Thanks for the dipping parameters and video clips which are very helpful for me to understand your process. Obviously, there are a lot of rooms for improvement in your process.

As requested by you, my full report has been sent to you separately but only a summary of the content is revealed in this "forum".

The following are the areas you need to concentrate on:

1) How to Overcome Latex Quality and Stability Problem 
- You need to know how to assess the suitability of centrifuged latex concentrate 

2) Importance of Prevulcanized latex vs Post-vulcanisable latex
- How to produce and handle both these latices

3) Types of Plasticizer to Be Used for Making the Balloons Softer
- Techniques on how to prepare the plasticizer

4) The Dipping Parameters
- The "Secrets" you need to know from formers cleaning stage to final stripping and drying stages

5) Analysis of Balloon Defects and How To Overcome Them
- Some examples of defects frequently encountered by manufacturers include the following:


Thin patches/uneven latex pick-up
Horizontal lines (Striation)
Fish-eyes and windows
Bubbles at bottom of balloons
Fungus growth
Premature bursting/popping
Balloons becoming stiffer on storage
Balloons sticking together 
Tearing of balloons
Blemished surface
Specky particles
Vertical lines with windows and particles
Star-like particles
Vertical lines along the folds




Crystallization and Gel Content of Polychloroprene

Manufacturer: We are using polychloroprene latex (e.g. Neoprene) for making latex dipped products including gloves. We have been advised to consider the "crystallinity" and "gel content" of the polymer in order to select the right grades for the right jobs. Can you tell us how these two properties can affect the properties of my finished products?



John Woon (Senior Latex Consultant): Generally, as you increase the level of "crystallinity" or "crystallization rate", you get the following effects:

1) Cohesion strength, modulus and hardness would increase
2) Elongation, hot oil swell, resistance to permanent set would drop

As you increase the level of "gel content", you get the following results:

1) Cohesive strength, modulus, resilience, resistance to permanent set would increase
2) Elongation, dry tack and hot oil swell would decrease

You should use this information as a guide in conjunction with the curative recipe design to get the optimized final physical properties required for your products.

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What has the bouncing ball to do with tyres?

Latex Gloves Educational Articles from the Malaysian Rubber Export Promotion Council

How do you select your medical gloves?

Rubber Chemicals: Carcinogenicity, Mutagenicity, Clastogenicity.

Why is Compression Set measurement important?

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]

Disclaimer:
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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