Insulation comprises a plurality of reactive flaps that react to one or more external stimuli, e.g., humidity. The flaps are made up of a fiber mixture that includes: 20-80 wt % reactive bicomponent fibers that are reactive to an external stimulus, and have a first configuration in an unactivated state and a second configuration in an activated state, and wherein the bicomponent fibers can reversibly transform between the unactivated and activated states; 5-40 wt % synthetic binder fibers having a denier of 1.5 to 4.0 denier; 0-75 wt % of a first population of synthetic fibers, being synthetic polymeric fibers having a denier of less than 2.0 denier; and 0-75 wt % of a second population of synthetic fibers, being synthetic polymeric fibers having a denier of 4.0 to 10.0 denier. Related articles and methods are also provided.

A device and a method for producing a nonwoven product from fibres laid randomly in the air flow, especially cellulose fibres, and the resultant nonwoven product, in which a fibre material comprising fibres in bonded form is frayed in at least one mill and the resulting fibres are delivered in an air flow from the at least one mill to at least one depositing sieve and laid randomly on the at least one depositing sieve such that the nonwoven product is formed on the at least one depositing sieve, wherein a fibre material is broken down in a pre-shredding device into a pre-shredded fibre material deliverable in an air flow and there is provided a buffer storage to form a pre-shredded fibre material-stockpile from which pre-shredded fibre material is removed and delivered in an air flow to the at least one mill.

A device and a method for producing a nonwoven product from fibres laid randomly in the air flow, especially cellulose fibres, and the resultant nonwoven product, in which a fibre material comprising fibres in bonded form is frayed in at least one mill and the resulting fibres are delivered in an air flow from the at least one mill to at least one depositing sieve and laid randomly on the at least one depositing sieve such that the nonwoven product is formed on the at least one depositing sieve, wherein a fibre material is broken down in a pre-shredding device into a pre-shredded fibre material deliverable in an air flow and there is provided a buffer storage to form a pre-shredded fibre material-stockpile from which pre-shredded fibre material is removed and delivered in an air flow to the at least one mill.

The invention relates to a method for making a spunbonded high loft nonwoven web comprising crimped multicomponent fibers, the process comprising continuously spinning the fibers, directing the fibers to a spin-belt by deflectors and/or air streams, laying down the fibers on the spinbelt and pre-consolidating the fibers after laydown using one or more pre-consolidation rollers to form a pre-consolidated web, wherein a first component of the fibers comprises a PP homopolymer and a second component of the fibers comprises a PP/PE copolymer, wherein the pre-consolidation rollers are operated at a temperature of smaller 110 C. and/or a linear contact force of smaller 5 N/mm.

The invention relates to a method for making a spunbonded high loft nonwoven web comprising crimped multicomponent fibers, the process comprising continuously spinning the fibers, directing the fibers to a spin-belt by deflectors and/or air streams, laying down the fibers on the spinbelt and pre-consolidating the fibers after laydown using one or more pre-consolidation rollers to form a pre-consolidated web, wherein a first component of the fibers comprises a PP homopolymer and a second component of the fibers comprises a PP/PE copolymer, wherein the pre-consolidation rollers are operated at a temperature of smaller 110 C. and/or a linear contact force of smaller 5 N/mm.

The invention relates to a method for making a spunbonded high loft nonwoven web comprising crimped multicomponent fibers, the process comprising continuously spinning the fibers, directing the fibers to a spin-belt by deflectors and/or air streams, laying down the fibers on the spinbelt and pre-consolidating the fibers after laydown using one or more pre-consolidation rollers to form a pre-consolidated web, wherein a first component of the fibers comprises a PP homopolymer and a second component of the fibers comprises a PP/PE copolymer, wherein the pre-consolidation rollers are operated at a temperature of smaller 110 C. and/or a linear contact force of smaller 5 N/mm.

The invention relates to a method for making a spunbonded high loft nonwoven web comprising crimped multicomponent fibers, the process comprising continuously spinning the fibers, directing the fibers to a spin-belt by deflectors and/or air streams, laying down the fibers on the spinbelt and pre-consolidating the fibers after laydown using one or more pre-consolidation rollers to form a pre-consolidated web, wherein a first component of the fibers comprises a PP homopolymer and a second component of the fibers comprises a PP/PE copolymer, wherein the pre-consolidation rollers are operated at a temperature of smaller 110 C. and/or a linear contact force of smaller 5 N/mm.

Self-regulating insulative batting is provided. The batting includes a blend of a plurality of fibers including functional fibers and non-functional fibers. The plurality of fibers are non-woven and oriented substantially vertically along a thickness direction of the batting. The functional fibers are configured to self-regulate at least one insulative quality of the batting based on changes in at least one environmental condition interacting with the batting. At least one of the length and thickness of the functional fibers changes based on changes in at least one environmental condition interacting with the batting. Articles comprising the self-regulating batting and methods of making the self-regulating batting are also provided.

An acoustic protective cover assembly can include a retracted membrane material traversing across an acoustic pathway defined by an opening in a housing. The retracted membrane material can include a fibril structure characterized by serpentine fibrils.

Nonwoven webs/nonwoven laminates for use in absorbent articles are disclosed. The nonwoven webs/nonwoven laminates are useful in leg cuffs of absorbent articles.