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U.S. Patent No. 12,409,080
November 10, 2025
By: Tara Olivo
Associate Editor at Nonwovens Industry
Lucas Bäck, Gothenburg, Sweden; and Victor Oredsson, Gothenburg, Sweden. Assigned to Essity Hygiene and Health Aktiebolag, Gothenburg, Sweden.
Filed: 10/22/19Issued: 9/9/25
A pant-type garment having a length direction and a width direction and being divided in the length direction into a front portion, a back portion and a crotch portion located between the front portion and the back portion, the front portion having a front waist edge extending in the width direction and a pair of opposing side edges extending in the longitudinal direction and the back portion having a back waist edge extending in the width direction and a pair of opposing side edges, extending in the longitudinal direction, the front and back portions being joined in a first and a second side seam arranged in first and second side seam regions and being formed by superposed layers of the front and back portions along the opposing side edges of the front and back portions, the first and second side seam regions comprising thermoplastic web material, the side seams extending along the side edges of the front and back portions of the pant-type garment and being constituted by fused thermoplastic material, wherein each side seam has a length in the length direction of the pant-type garment and has a generally rectangular cross-sectional area defined by a width in the width direction of the pant-type garment and a thickness perpendicular to the width direction and the length direction, wherein the generally rectangular cross-sectional area is present within 80% to 100% of the length of each side seam, and wherein each side seam is adjoined by web material having a material thickness and wherein a thickness ratio ts/tm between the thickness of the side seam to the material thickness is in the range of from 1.0 to 1.3, wherein the thickness ratio is determined under tension, with the materials stretched out perpendicular to the longitudinal direction of the side seam.
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