US 6,145,217 A · Machine for manufacturing a material web

Abstract

A machine for manufacturing a material web, in particular a paper or cardboard web, comprises a drying section that exhibits at least one drying group comprising two rows, including an upper and a bottom row of heatable drying cylinders, which are each assigned a transport belt, which is guided around the drying cylinder and the guide rollers assigned to the drying cylinders in a meandering fashion, whereby the material web is guided in an alternating manner around a drying cylinder of the top row and a drying cylinder of the bottom row and between the drying cylinders in a free stretch, and with at least one first nozzle, serving to transfer the threading strip, projecting a flow of gas essentially against the run direction of the material web. The machine includes a guide device positioned on the material web side opposite the first nozzle, which includes at least a second nozzle projecting a flow of gas essentially in the run direction of the material web.

Claims17

Dependent claims

A machine for manufacturing a material web, the machine comprising a drying section comprising at least one drying group,

the drying group comprising an upper row of heatable drying cylinders and a lower row of heatable drying cylinders, each of the upper row and the lower row being provided with guide rollers and a transport belt which is guided around the drying cylinders and the guide rollers in a meandering fashion;
whereby the material web is guided in an alternating manner around a drying cylinder of the top row and a drying cylinder of the bottom row and between the drying cylinders in a free stretch, in a run direction;
at least one first nozzle constructed and arranged to project a flow of gas essentially against the run direction of the material web so as to transfer the material web from a heatable drying cylinder;
at least one second nozzle positioned on a material web side opposite the at least one first nozzle and being constructed and arranged to project a flow of gas essentially in the run direction of the material web;
and
further comprising a cutting device constructed and arranged to cut off a threading strip of a material web.

3 more elements

A machine for manufacturing a material web, the machine comprising a drying section comprising at least one drying group;

the drying group comprising an upper row of heatable drying cylinders, each of the cylinders having an axis of rotation and being spaced along a first plane, and a bottom row of heatable drying cylinders, each of the cylinders having an axis of rotation and being spaced along a second plane;
the upper row being provided with guide rollers, each having an axis of rotation, and a transport belt which is guided around the drying cylinders and the guide rollers in a meandering fashion;
the lower row being provided with guide rollers each having an axis of rotation, and a transport belt which is guided around the drying cylinders and the guide rollers in a meandering fashion;
whereby the material web is guided in an alternating manner around a drying cylinder of the top row and a drying cylinder of the bottom row and between the drying cylinders in a free stretch, in a run direction;
at least one first nozzle constructed and arranged to project a flow of gas essentially against the run direction of the material web so as to transfer the material web from a heatable drying cylinder;
and
at least one second nozzle positioned on a material web side opposite the at least one first nozzle and being constructed and arranged to project a flow of gas essentially in the run direction of the material web.

4 more elements

Dependencies are inferred from the claim text.

Machine for manufacturing a material web

Life of this patent

Machine for manufacturing a material web

Life of this patent

Abstract

Claims17