The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 1986
Filed:
Nov. 05, 1984
Kao Corporation, Tokyo, JP;
Abstract
A disposable diaper comprises a liquid-permeable surface sheet, a liquid-impermeable backing sheet, and an absorbent pad sandwiched between the two sheets, characterized in that water-absorptive, shrinkable fiber strings, which contract lengthwise on contact with water and are rendered stretchable, are secured to the two sheets, extending midway longitudinally of the diaper in parallel along, but without overlapping, the both edges of the pad, the edge portions of the surface sheet outside the water-absorptive, shrinkable fiber strings and the surface sheet portion on the absorbent pad being partly bonded together at two spots about halfway of the length, the distance between the two bonded spots being at least 50 mm and the bonded spots themselves being 10 to 50 mm long each, and elastic, stretch members, at least 70 mm long each and having a combined elastic force or tensile strength (the weight equivalent to the force required to stretch the diaper including any shrank portions thereof up to the total diaper length) of 20 to 600 g, are provided midway and longitudinally of the both edge portions of the diaper at least 5 mm outside the both bonded spots.