FLOCKED HELICAL SPRING AND METHOD FOR PRODUCING SAME
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United States of America Patent
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Issued Date -
Oct 10, 2024
app pub date -
Dec 15, 2021
filing date -
Feb 15, 2021
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Abstract
The flocked helical spring includes a spring body, a cationic electrodeposition coating layer disposed on the surface of the spring body, an adhesive layer disposed on the surface of the cationic electrodeposition coating layer, and a flocking layer composed of flocking fillers fixed to the adhesive layer. The surface roughness Rz of the cationic electrodeposition coating layer is 19.6 μm or greater. The method for producing a flocked helical spring includes a cationic electrodeposition coating process of performing a cationic electrodeposition coating treatment on a spring body to form a film of an electrodeposition coating material on the surface of the spring body; an adhesive coating process of coating an adhesive containing a surface roughening solvent on the surface of the film; a flocking process of bonding flocking fillers to the surface coated with the adhesive; and a baking process of heating the spring body adhered with the flocking fillers.
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