Method and device for depositing a fiber material layer on a carrier, such as using an electrospinning process. The device includes a deposition unit positioned remote from the carrier during operation, and the deposition unit is arranged for forming the fiber material layer on the carrier in a continuous manner A carrier feed unit is provided for feeding the carrier in a transport direction with a predetermined speed, and the carrier includes a plurality of carrier plates. A cutting unit is present and arranged downstream from the deposition unit, the cutting unit being arranged to cut the deposited fiber material layer in between two adjacent ones of the plurality of carrier plates.

The feed device for delivering individualized fibers to a transport device comprises a feed roller, which is configured to draw in a plurality of strands of starting material arranged adjacent to each other, and an opening roller, which cooperates with the feed roller to open the strands of starting material. The feed device also comprises a plurality of metering devices assigned to the feed roller, wherein each metering device is configured to regulate the delivery of at least one strand of starting material to the feed roller.

The feed device for delivering individualized fibers to a transport device comprises a feed roller, which is configured to draw in a plurality of strands of starting material arranged adjacent to each other, and an opening roller, which cooperates with the feed roller to open the strands of starting material. The feed device also comprises a plurality of metering devices assigned to the feed roller, wherein each metering device is configured to regulate the delivery of at least one strand of starting material to the feed roller.

An apparatus for the production of needle punched nonwovens makes it possible to introduce different materials via the nonwoven thickness and/or nonwoven width into the individual layers during their production.

A spatially controllable, for example CD controllable, eductor, and more particularly an eductor that is capable of providing a variable motive fluid and processes using such an eductor are provided.

An apparatus for making spunbonded nonwovens has a spinneret for emitting continuous thermoplastic filaments in a filament-travel direction, a cooling chamber downstream in the direction from the spinneret for cooling the spun filaments with cooling air, two manifolds on opposite sides of the cooling chamber opening transversely of the direction into the cooling chamber, and a respective conduit having a conduit cross-sectional area and connected to each manifold for feeding cooling air thereto. The conduit cross-sectional area increases toward the manifold to a manifold cross-sectional area, and manifold cross-sectional area is at least twice as large as the conduit cross-sectional area. At least one flow straightener is provided upstream from the cooling chamber in each manifold for orienting air flow in an air-flow direction, and at least one perforated planar homogenizing element is provided in each manifold for homogenizing the cooling air flow.

An apparatus for making spunbonded nonwovens has a spinneret for emitting continuous thermoplastic filaments in a filament-travel direction, a cooling chamber downstream in the direction from the spinneret for cooling the spun filaments with cooling air, two manifolds on opposite sides of the cooling chamber opening transversely of the direction into the cooling chamber, and a respective conduit having a conduit cross-sectional area and connected to each manifold for feeding cooling air thereto. The conduit cross-sectional area increases toward the manifold to a manifold cross-sectional area, and manifold cross-sectional area is at least twice as large as the conduit cross-sectional area. At least one flow straightener is provided upstream from the cooling chamber in each manifold for orienting air flow in an air-flow direction, and at least one perforated planar homogenizing element is provided in each manifold for homogenizing the cooling air flow.

Insulation and filling material that includes a plurality of assemblages of a blend of a plurality of fiber are disclosed. The blend of fibers includes 20 to 80 wt % cellulosic fibers including a phase change material having a fiber size less than 6 denier and a specific latent heat of greater than 20 J/g in a temperature range from 15 to 45 degrees Celsius, and 20 to 80 wt % synthetic polymeric fibers having a fiber size less than 6 denier. The assemblages form three-dimensional structures with internal air spaces. The assemblages may be fiberballs or discrete longitudinally elongated floccules with a relatively open enlarged medial portion and relatively condensed twisted tail portions extending from opposing ends of the medial portion. The insulation or filling material has at least 0.8 clo/oz/sqyd.

The invention relates to a former head of the kind which is used for forming, such as dry forming, of a fibrous web, where fibres are supplied to the former head mixed with air via at least one injection inlet. The former head comprising: a) a roller being rotatable in a rotation direction around a rotation axis and comprising: a roller surface surrounding the rotation axis, and a plurality of projections extending outwardly, such as radially outwardly, from the roller surface, b) a screen extending along at least part of the roller surface above the rotation axis, the roller surface and the screen defining therebetween a peripheral gap, and c) the injection inlet, wherein the injection inlet is positioned to conduct the mixture of the fibres and air into the peripheral gap in a delivery direction opposite or substantial opposite to the rotation direction of the roller.

The invention relates to a former head of the kind which is used for forming, such as dry forming, of a fibrous web, where fibres are supplied to the former head mixed with air via at least one injection inlet. The former head comprising: a) a roller being rotatable in a rotation direction around a rotation axis and comprising: a roller surface surrounding the rotation axis, and a plurality of projections extending outwardly, such as radially outwardly, from the roller surface, b) a screen extending along at least part of the roller surface above the rotation axis, the roller surface and the screen defining therebetween a peripheral gap, and c) the injection inlet, wherein the injection inlet is positioned to conduct the mixture of the fibres and air into the peripheral gap in a delivery direction opposite or substantial opposite to the rotation direction of the roller.