Patent ID: 11904570
Assignee: SPRICK GMBH BIELEFELDER PAPIER-UND WELLPAPPENWERKE & CO.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. An apparatus for production of a cushion product from a single or multilayer continuous paper strip, comprising:
a chute-like preforming station configured to compress the paper strip in a transverse direction that is transverse to a feed direction, the preforming station including a lifting unit having a wedge being formed in the feed direction at least in sections sloping upwards, the wedge including:
a cross-sectional area in the transverse direction narrowing upwardly from a lower base of the wedge in a vertical direction to an upper portion, and
a sloping ramp surface that increases in height as the sloping ramp surface extends in the feed direction, the sloping ramp surface including a first portion having an increasing transverse width in the feed direction and a second portion having a decreasing transverse width in the feed direction, the second portion being located downstream of the first portion in the feed direction, wherein the wedge is configured to lift a central area of the paper strip without lifting other areas of the paper strip, the central area of the paper strip to be lifted being centrally arranged in a transverse direction of the paper strip, and the narrow upper portion of the wedge being configured to contact the central area of the paper strip to lift the central area of the paper strip; and

a deformation station following the preforming station and positioned downstream of the wedge in the feed direction of the paper strip, the deformation station having two embossing rollers engaging into each other in a deformation area in order to form the paper strip to a cushion product with at least one crumple hollow space extending in a longitudinal direction.