Patents

Method for Producing Wearable Article

U.S. Patent No. 12,527,698

Toyoshi Umebayashi, Osaka, Japan.

Assigned to Zuiko Corporation, Osaka, Japan.


Filed: 8/23/21
Issued: 1/20/26

A method for producing a wearing article including a waist member configured to be disposed around a waist of a wearer, and an absorber joined to the waist member and extending in an orthogonal direction with respect to a width direction of the waist member from a joint portion with the waist member so as to be disposed from a back portion to a front abdomen portion of the wearer via a crotch portion, the method comprising: producing the waist member including a waist body that extends in the width direction, has elasticity capable of expanding and contracting in the width direction, and is configured to be disposed around the waist of the wearer, and first engagement portions provided on a surface facing a skin surface of the wearer at both end portions of the waist body in the width direction; producing the absorber including a core for absorbing a body fluid, and a second engagement portion; joining the absorber to the joint portion of the waist body in a form of extending in the orthogonal direction from the waist body; and engaging the first engagement portions and the second engagement portion with each other by folding the absorber in two in the orthogonal direction, then folding, in the width direction, both side portions positioned on both sides in the width direction with respect to the joint portion in the waist member, wherein the producing of the absorber includes: producing the core by scattering water absorbent polymer over a core-side first non-woven fabric of the core so as to form a holding region, and so as to form first low-density regions on first and second end portions in the orthogonal direction of the holding region, respectively, wherein each first low-density region includes the water absorbent polymer, and a distribution density of the water absorbent polymer in each first low-density region is lower than that of the holding region, wherein one of the first and second end portions in the orthogonal direction of the holding region is disposed to face the front abdomen portion, and the other of the first and second end portions in the orthogonal direction of the holding region being disposed to face the back portion when the wearing article is worn by the wearer; providing a front sheet and a back sheet on opposite surfaces of the core, respectively, so as to sandwich the core between the front sheet and the back sheet, wherein the front sheet is arranged on a surface of the core which faces the skin surface of the wearer when the wearing article is worn by the wearer; and providing the second engagement portion on an outer surface of the back sheet to detachably engage the absorber to the first engagement portions, wherein the outer surface of the back sheet faces away from the skin surface of the wearer when the wearing article is worn by the wearer, wherein the engaging of the first engagement portions and the second engagement portion with each other includes forming a temporary fixing so that an end portion on a side opposite to an end portion joined to the waist member of the absorber and at least one of the absorber and the waist member overlapping the end portion is detachable at a stage after the absorber is folded in two in the orthogonal direction, and in the forming of the temporary fixing, the temporary fixing is formed outside relative to the core in the width direction. 

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