Patents Assigned to Perini Navi S.p.A.
  • Patent number: 6855228
    Abstract: The equipment for the production of a paper web material comprises: a first former (1) for forming a first layer (S1) consisting of a slurry containing fibers and water; a second former (2) for forming a second layer (S2) consisting of a slurry containing fibers and water; a third former (3) for forming a third layer (S3) consisting of a slurry containing fibers and water; and a creping device (50A, 50B) for wet creping of the third layer.
    Type: Grant
    Filed: November 28, 2000
    Date of Patent: February 15, 2005
    Assignee: Perini Navi S.p.A.
    Inventor: Fabio Perini
  • Patent number: 5040738
    Abstract: The machine for rewinding webs of paper from a large roll onto a core to form small rolls includes a continuous conveyor for the cores, a distributor associated with said conveyor for applying adhesive to the cores, an upper winding cylinder, a lower winding cylinder defining a nip with the upper cylinder for receiving a core, and an insertion group which advaces up the core from said conveyor into said nip. The lower cylinder is smooth. The adhesive distributor includes a dispensing cylinder having a cylindrical surface abe to apply the adhesive substantially in the form of an axially-extending longitudinal strip onto the surface of the cores.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: August 20, 1991
    Assignee: Perini Navi S.p.A.
    Inventor: Guglielmo Biagiotti
  • Patent number: 5038647
    Abstract: A machine is described for cutting large diameter wound logs of paper or similar web material such as toilet tissue and the like into relatively small discs for use specially in institutional dispensers. The machine includes a cradle and transport means for inserting a large diameter log of paper into a gripper which holds the log securely and stationary while a band saw cuts the discs of paper from the log. The gripper includes a ring through which the log passes, said ring including a plurality of radially movable plungers which support and retain the log within the ring while the band saw is cutting a disc from the log. The mechanism also includes an automatic guide and sharpening station for maintaining the sharpness of the band saw and, furthermore, includes a support and discharge mechanism for removing the discs of paper from the gripper.
    Type: Grant
    Filed: April 2, 1990
    Date of Patent: August 13, 1991
    Assignee: Perini Navi S.p.A.
    Inventor: Guglielmo Biagiotti