Home | Links | Contact Us | More About Intellectual Property | Bookmark
Search patents:
Home Manufacturing Materials Heated-extended-nip-press-apparatus

 Apparatus for drying a fibrous web
I claim: 1. An apparatus for drying a wet air-permeable web, comprising: a drum rotatable about an ...


 Method of continuous drying of a paper or other porous web and a drying device for applying this method
I claim: 1. A method of continuous drying of a paper, cardboard, or other porous web, according to ...


 Peripheral exhaust system for high velocity dryer
One object of my invention is to provide a peripheral exhaust system for a high velocity dryer ...


 Apparatus and method for drying fibrous web material
According to the teachings of the present invention, the advantages of impulse drying are obtained ...


 Method and apparatus for forming battery terminal bushings
It is therefore an object of this invention to produce a battery terminal bushing which is ...


 Polycarbonate transesterification with tetraborate or tetraaluminate anion containing catalyst
What is claimed is: 1. In a process for preparing a high molecular weight polycarbonate by reacting ...


 Polyamic acid copolymer system for improved semiconductor manufacturing
We claim: 1. A copolymeric polyamic acid which is capable of forming a polyimide consisting ...


 Multi-ply headbox for a papermaking machine
Therefore, with the foregoing in mind, it is a primary object of the present invention to provide a ...


 Multi-purpose clamping apparatus
The clamping apparatus of the present invention is characterized by a pair of base plates formed ...


 Pressurized peroxide bleaching vessel having a rotatable scraper arm and cleaning device
A known pressurized peroxide bleaching vessel is shown in FIG. 1. The vessel comprises a housing 1 ...


 Heated extended nip press apparatus

Details
Inventors: Crouse, Jere W.; Pulkowski, Jeffrey H.; Porter, Roy J.;
Assignee: Beloit Corporation (Beloit, WI)
Primary Examiner: Hastings; Karen M.
Assistant Examiner:
Attorney, Agent or Firm: Veneman; Dirk J., Campbell; Raymond W., Archer; David J.

A heated extended nip press apparatus is disclosed for pressing water from a formed web. The apparatus includes a frame and a backing roll rotatably supported by the press frame. A press device is connected to the press frame and movable relative to the backing roll. The press device cooperates with the backing roll for defining therebetween an extended nip for the passage therethrough of the web. An endless looped blanket extends through the extended nip such that the web is disposed between the blanket and the backing roll. Additionally, the press device includes an arrangement for selectively changing the pressure applied on the blanket along a machine direction relative to a further pressure applied for moving the press device relative to the backing roll such that optimum web properties are obtained and delamination of the pressed web is inhibited. Cross-machine direction recesses in the press shoe enable the shoe to be selectively positioned in the machine direction.

DETAILED DESCRIPTION The present invention relates to a heated extended nip press apparatus and method for pressing water from a formed web.
The apparatus includes a press frame and a backing roll rotatably supported by the press frame.
A press means is connected to the press frame and movable relative to the backing roll.
The press means cooperates with the backing roll for defining therebetween an extended nip for the passage therethrough of the web.
An endless looped blanket extends through the extended nip such that the web is disposed between the blanket and the backing roll.
The press means also includes means for selectively changing the pressure applied on the blanket along a machine direction relative to a further pressure applied for moving the press means relative to the backing roll such that optimum web properties are obtained and delamination of the pressed web is inhibited.
In a more specific embodiment of the present invention, the extended nip press apparatus includes an induction heater which is disposed closely adjacent to the backing roll for heating the backing roll thereby increasing the amount of water removed from the formed web during passage of the web through the extended nip.
Additionally, the present invention includes a heated extended nip press apparatus in which the press means also includes a press member defining a bore, the bore being connected to a source of hydraulic pressure.
A piston sealingly and slidably cooperates with the bore such that when the bore is selectively connected to the source of hydraulic pressure, the piston moves relative to the backing roll.
A shoe is connected to the piston so that the shoe slidably cooperates with the blanket.
In one embodiment of the present invention, the shoe is a hydrodynamic shoe which is pivotally connected to the piston.
More specifically, the hydrodynamic shoe defines a plurality of cross-machine directional recesses.
The recesses selectively cooperate with the piston so that the shoe is permitted to pivot about the piston


Related patents
  Method for crosslinking cellulose fibers
The apparatus of the present invention is particularly adapted for preparing a quantity of individual crosslinked cellulose fibers from one or more mats comprised of non-...
  Paper machine for the production of tissue paper
The present invention provides a paper machine for the production of tissue paper where the fiber suspension proceeds from a headbox to a sheet formation unit. Supported ...
  Apparatus for crosslinking individualized cellulose fibers
The apparatus of the present invention is particularly adapted for preparing a quantity of individual crosslinked cellulose fibers from one or more mats comprised of non-...
  Batch cooking with black liquor pretreatment
The present invention relates to a method and apparatus for cooking comminuted cellulosic fibrous material to produce cellulosic pulp. Especially preferably, the ...
  Control of diameter of fiber insulation on conductors
What is claimed is: 1. A pulp vat apparatus for applying a layer of pulp fiber to conductors comprising a vat, a cylinder mould rotatable within the vat about an axis to ...
  Wetlaid nonwovens on high speed machines
OF THE PREFERRED EMBODIMENTS The term "polymeric surfactant" is defined as a molecule which contained a plurality, two or more, of both hydrophilic moieties and ...
  Press of a paper machine for thin papers
The object of the present invention is to provide a press section with which such transfer elements can be dispensed with, so that the frequency of the tearing of the ...
  Method of dewatering wet web using an integrally sealed air press
It has now been discovered that a wet-pressed tissue can be made having bulk and absorbency properties equivalent to those of comparable throughdried products, while ...
  Method for making soft tissue
It has now been discovered that an improved uncreped throughdried web can be made by dewatering the web to greater than about 30 percent consistency prior to ...
  Loading arrangement in a paper machine doctor
The present invention provides new kind of loading arrangement for a paper machine doctor, by means of which the shape of the doctor blade and the force it directs to ...

0.004

Archive: All patents - Links

Copyright (c)2006 Eipa-patents.org - All rights reserved