Elastic strand coating process

Abstract

A method for applying fluids to a strand and useable for bonding adhesive coated strands to substrates in the production of bodily fluid absorbing hygienic articles, by drawing the strand along an isolated path, moving a fluid or adhesive fiber back and forth across a path of the strand as the fluid fiber is dispensed toward the strand, and capturing substantially all of the fluid fiber on the isolated strand, and in some applications contacting an adhesive coated strand with the substrate to bond the strand thereto. The adhesive fiber is vacillated back and forth across a path of the strand beyond opposing sides thereof to at least partially coat all sides thereof with adhesive. In bodily fluid absorbing hygienic articles, the methods substantially eliminate fabric stiffening and loss ofmoisture absorbing capacity thereof, provide substantially uniformly bonding along the axial dimension of the strand to ensure uniform bunching of fabrics, optimum fluid absorption, and comfort.

Description

[0001] divisional application [0002] This application is a divisional application of No. 99105501.2 patent. The filing date of patent application No. 99105501.2 is April 9, 1999, and the title of the invention is "elastic twisted wire coating process". technical field [0003] This application is related to the following applications: U.S. Patent Application Serial No. 08 / 843,224, filed April 14, 1997, and entitled "Improved Meltblowing Method and System"; and U.S. Patent Application No. 08 / 717,080 (now US Granted Patent 5,902,540), entitled "Meltblowing Method and Apparatus." These applications are common assignments and are hereby incorporated by reference. [0004] This invention relates generally to adhesive jetting systems, and more particularly to the process of bonding one or more relatively elongated strands to one or more substrates, particularly in the manufacture of body fluid-absorbent healthcare products. A process in which elongated elastic strands are bonde...

AI Technical Summary

Problems solved by technology

If the adhesive cannot be evenly sprayed along the axial direction of the strand, then the elongated strand cannot be bonded evenly to the substrate, which will have an adverse effect on the uniform gathering of the fabric

Uneven gathers are aesthetically undesirable, and the more severe uneven gathers of the fabric, when stretched against the wearer's body, also affect the ability of the fabric to form an effective liquid seal and reduce the Softness and Comfort

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