CPC D01D 4/025 (2013.01) [D01D 5/08 (2013.01); D04H 1/56 (2013.01)] | 11 Claims |
1. An apparatus for making nonwoven, the apparatus comprising:
a mesh-belt system having an upstream endless section and a downstream endless section aligned therewith in a horizontal direction;
respective upstream and downstream spinnerets spaced apart in the direction above the upstream and downstream sections of the mesh-belt system, having downwardly opening tips at respective vertical spacings above the respective sections of the mesh-belt system, and each emitting fibers that are deposited at locations on the respective sections of the mesh-belt system directly below the spinnerets to form on the respective sections respective nonwoven layers;
a support carrying the mesh-belt system;
means for moving the support and thereby orienting the mesh-belt system into a position forming an acute angle with respect to horizontal and thereby varying the spacings; and
upstream and downstream drive means respectively connected to the upstream and downstream sections for independently moving same in or against the direction.
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9. An apparatus for making a multilayer nonwoven, the apparatus comprising:
a base;
a support carried by the base;
an endless belt system supported on and movable with the support and having an upper reach extending generally horizontally;
a drive for advancing the belt system such that the upper reach moves in a machine direction;
upstream and downstream spinnerets fixed above the base, separated in the direction by a gap, having downwardly open tips spaced apart in the direction at vertically fixed positions at respective spacings above respective deposition locations on the belt system, and emitting melt-blown fibers that drop from the tips onto the respective deposition locations to form respective layers;
a pivot supporting the support and belt system on the base for pivoting about a horizontal axis transverse to the direction;
a guide on the base only allowing the pivot to move vertically; and
actuators for raising and lowering the pivot on the base and for pivoting the support on the base about the axis to vary the spacings.
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