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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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Thursday, May 11, 2006

Poor flocking quality of household gloves


Manufacturer: We make household gloves with reasonable quality which give us quite good ROI for some years. But we believe this could improve if we could overcome the occasional problem of poor flocking of our gloves i.e. the flocks tend to disappear after washing. Any good ideas?

JohnWoon:This question had been raised before. But there is no harm in repeating my comment and recommendation. The basic objective is to have good penetration, anchoring and bonding of the individual strands of the flock onto the latex layer. However over penetration would result in the unwanted total submersion of the flocks. Hence you have to strike a balance between the two extremes.

Please try the following suggestions:

1) Ensure the coagulant for the first latex dip is not too strong otherwise the unused residual coagulant would migrate to the subsequent second latex layer (sometimes referred to as the adhesive layer) leading to premature gelling of this second latex layer. This latex must remain fluid at the time of flocking while in the flocking chamber.

2) For the same reason above, the adhesive latex should not receive unnecessary heating that may result in undue drying.

3) Increase the latex viscosity by adding a suitable thickener at the right level. This would increase the thickness of the adhesive layer.

I am of course assuming that you do not have engineering design problem of the flocking chamber which in the first place should ensure a very even distribution of the flocks throughout the glove surface.

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