Polymer coating for powder-free elastic strands

a technology of elastic strands and polymers, which is applied in the field of polymer coating of powder-free elastic strands, can solve the problems of airborne powder contaminating the air, dusty and easily falling off powders, and the manufacturer of end-use products containing rubber strands, and achieves good bonding, reduced bonding efficiency, and high amount of hot melt adhesives.
US20050244640A1Inactive Publication Date: 2005-11-03RISWICK MARTIN +2
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
RISWICK MARTIN
Publication Date
2005-11-03
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

The present invention is directed to a coated elastomeric sheet or strands having a polymeric coating applied to both sides. The powder-free polymer coating provides good release and anti-blocking properties to elastic strands, as well as adding to the machinability and end-use properties of the strands. The polymer-coated elastic strands are useful in the manufacture of diapers and other disposable articles requiring flexible elastic-lined openings.
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Description

[0001] The benefit of the earlier filing date of provisional application No. 60 / 467,382 is claimed.FIELD OF THE INVENTION

[0002] The present invention relates to the use of a polymeric coating on powder-free natural or synthetic rubber elastomeric strands and sheets. The polymer coating provides good release and anti-blocking properties to the elastic strips, as well as adding to the machinability and end-use properties of the strands. BACKGROUND OF THE INVENTION

[0003] Natural and synthetic rubber is an elastic material that is very tacky and has a low glass transition temperature (Tg). Because of its tackiness, the material adheres to itself and other materials during the manufacturing process, especially prior to curing. A surface coating must be applied to the elastic material to prevent blocking, which is the adhering together of two rubber surfaces, and also to serve as a release coating to prevent the rubber from sticking to objects during manufacture.

[0004] In current pract...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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