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    Patents

    Disposable Diaper and a Method of Manufacturing a Disposable Diaper:

    U.S. Patent No. 10,188,562

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    • Disposable Diaper:
    03.15.19
    Satoru Sakaguchi, Kanonji, Japan; and Yasuhiro Yamanaka, Kanonji, Japan.
    Assigned to Unicharm Corporation, Ehime, Japan.

    Filed: 4/25/13
    Issued: 1/29/19

    A disposable diaper, comprising: a front waistline region, a rear waistline region, a crotch region positioned between the front waistline region and the rear waistline region; a product longitudinal direction from the front waistline region towards the rear waistline region, and a product widthwise direction perpendicular to the product longitudinal direction; a skin-surface side sheet adapted to face toward a body of a wearer when the diaper is worn; a non-skin surface side sheet adapted to face away from the body of the wearer when the diaper is worn; an absorber arranged between the skin-surface side sheet and the non-skin surface side sheet, running across the crotch region in the product longitudinal direction, and extending from the crotch region to at least either one of the front waistline region and rear waistline region; a waistline retaining unit disposed in the front and rear waistline regions and adapted to hold the disposable diaper onto the body of the wearer; leg stretching units arranged along leg hole openings provided on an outer side of the absorber in the product widthwise direction, said leg stretching unit being configured to expand and contract along the product longitudinal direction; and diaper ends defining an outer circumference of the disposable diaper, wherein the leg stretching units are arranged between the skin-surface side sheet and the non-skin surface side sheet, in a plan view of the disposable diaper, the leg stretching units are arranged on an inner side of the diaper ends in the product longitudinal direction or on the inner side of the diaper ends in the product widthwise direction, the leg stretching units have ends opposing each other in the product longitudinal direction, a part of the waistline retaining unit is arranged in at least one of a first region on an outer side in the product longitudinal direction from the ends of the leg stretching units, or a second region on an outer side in the product widthwise direction from the ends of the leg stretching units, a joint region where the skin-surface side sheet and the non-skin surface side sheet are joined is provided along the diaper ends in at least one of the first region or the second region, a first adhesive is applied at an interval, on the skin-surface side sheet of the first region and the second region, based on a first application pattern, and a second adhesive is applied at an interval, on the non-skin surface side sheet of the first region and the second region, based on a second application pattern different from the first application pattern.
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    • Disposable Diaper with Buttocks Part Stretching Unit:

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