US 9,296,176 B2 · High cellulose content, laminiferous nonwoven fabric

Abstract

The present invention provides a laminiferous nonwoven fabric with a high woodpulp content suitable for use in wipes, absorbent articles and other applications, and a method of making the same. The laminiferous nonwoven comprises 3 layers bonded together, where the outer layers are lightweight meltspun webs and the middle layer comprises mainly woodpulp fibers. Each of the first (3), second (2) and third (4) nonwoven layer are preferably first formed separately and individually to be self-supported webs, whereafter the three self-supported webs are brought together essentially immediately before bonding them together. When used as a substrate for wet wipes, the inventive fabric exhibits a combination of several useful properties; good wet and dry softness and bulk, good wet abrasion resistance and low wet linting propensity, and where the majority raw material is woodpulp.

Claims17

Dependent claims

A laminiferous nonwoven fabric, comprising:

at least a first nonwoven layer, consisting essentially of natural cellulose fibres and thermoplastic fibres,
on both sides of said first layer, a second and a third nonwoven layer, which second and third nonwoven layers consist essentially of melt-spinnable fibres and each second and third nonwoven layer having a basis weight of 12 gsm or less, wherein
the first layer is formed by air forming process,
at least one of the second or third nonwoven layers is formed separately and individually to be a self-supporting web with a geometric mean wet tensile strength/basis weight ratio of at least 7 N/m per gsm,
the nonwoven fabric comprises at least 50% by weight cellulose, and
the three webs are bonded together using ultrasonic, thermal or adhesive bonding.

3 more elements

Dependencies are inferred from the claim text.

High cellulose content, laminiferous nonwoven fabric

Life of this patent

High cellulose content, laminiferous nonwoven fabric

Life of this patent

Abstract

Claims17