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US 6,416,630 B1Granted
Press jacket and method for treating a material web
AssigneeVoith Sulzer Papiertechnik Patent GmbH
InventorsUwe Matuschczyk, Andreas Endters
Life of this patent
Estimating the term…
Abstract
The present invention provides a press jacket of a press device and a method for treating a material web, in particular a paper or cardboard web, in a nip, where the press jacket has an outer circumferential surface that is provided with grooves and/or blind bores. The grooves and/or bores include a side wall having an the opening region with a bevel and/or a rounded section that extends along a curved line, in order to counteract a volume reduction that occurs when the press device is loaded.
Claims44
A press jacket for a press device for treating a material web in a nip, comprising:
- an outer circumferential surface including at least one opening;
- the at least one opening comprising one of a groove and a blind bore;
- the at least one opening including a bottom section which is rounded, a wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section;
- the inwardly sloping section being arranged between the outer circumferential surface and the wall section;
- and
- a depth edge length of the inwardly sloping section measured in a direction of the at least one opening being approximately 1 to 3 times a longitudinal edge length measured in a longitudinal direction,
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
4 more elements
A method for improving the drainage of water from a material web, comprising:
- providing a flexible press jacket;
- forming a nip between the flexible press jacket and a rigid opposing surface;
- transporting the material web through the nip;
- applying a press load to the web in the nip;
- the flexible press jacket including an outer circumferential surface;
- an outer circumferential surface including at least one opening;
- the at least one opening comprising one of a groove and a blind bore;
- the at least one opening including a bottom section which is rounded, a wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section;
- the inwardly sloping section being arranged between the outer circumferential surface and the wall section;
- and
- a depth edge length of the inwardly sloping section measured in a direction of the at least one opening being approximately 1 to 3 times a longitudinal edge length measured in a longitudinal direction,
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
9 more elements
The press jacket for a press device for treating a material web in a nip, comprising:
- an outer circumferential surface including at least one opening;
- the at least one opening one of a groove and a blind bore;
- the at least one opening including a bottom section which is pointed, a wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section;
- the inwardly sloping section being arranged between the outer circumferential surface and the wall section;
- and
- a depth edge length of the inwardly sloping section measured in a direction of the at least one opening being approximately 1 to 3 times a longitudinal edge length measured in a longitudinal direction,
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
4 more elements
A method for improving the drainage of water from a material web, comprising:
- providing a flexible press jacket;
- forming a nip between the flexible press jacket and rigid opposing surface;
- transporting the material web through the nip;
- applying a press load to the web in the nip;
- the flexible press jacket including an outer circumferential surface;
- an outer circumferential surface including at least one opening;
- the at least one opening comprising one of a groove and a blind bore;
- the at least one opening including a bottom section which is pointed, a wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section;
- the inwardly sloping section being arranged between the outer circumferential surface and the wall section;
- and
- a depth edge length of the inwardly sloping section measured in a direction of the at least one opening being approximately 1 to 3 times a longitudinal edge length measured in a longitudinal direction,
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
9 more elements
A press jacket for a press device for treating a material web in a nip, comprising:
- an outer circumferential surface including at least one opening;
- the at least one opening comprising one of a groove and a blind bore;
- the at least one opening including a bottom section which is one of rounded and pointed, a wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section;
- the inwardly sloping section being arranged offset in a direction of a depth of the at least one opening and at a distance from the outer circumferential surface;
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
2 more elements
A method for improving the drainage of water from a material web, comprising:
- providing a flexible press jacket;
- forming a nip between the flexible press jacket and a rigid opposing surface;
- transporting the material web in the nip;
- applying a press load to the web in the nip;
- the flexible press jacket including an outer circumferential surface;
- the outer circumferential surface including at least one opening;
- the at least one opening comprising one of a groove and a blind bore;
- the at least one opening including a bottom section which is one of rounded and pointed, a wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section;
- the inwardly sloping section being arranged offset in a direction of a depth of the at least one opening and at a distance from the outer circumferential surface;
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
7 more elements
A press jacket for a press device for treating a material web in a nip, comprising:
- an outer circumferential surface including at least one opening;
- the at least one opening comprising one of a groove and a blind bore;
- the at least one opening including a bottom section, an outer wall section, an inner wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section;
- the outer wall section defining an opening width which is greater than an opening width of the inner wall section;
- the inwardly sloping section being arranged between the outer wall section and the inner wall section;
- and
- the inwardly sloping section being arranged offset in a direction of a depth of the at least one opening and at a distance from the outer circumferential surface,
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
5 more elements
A method for improving the drainage of water from a material web, comprising:
- providing a flexible press jacket;
- forming a nip between the flexible press jacket and a rigid opposing surface;
- transporting the material web through the nip;
- applying a press load to the web in the nip;
- the flexible press jacket including an outer circumferential surface;
- an outer circumferential surface including at least one opening;
- the at least one opening comprising one of a groove and a blind bore;
- the at least one opening including a bottom section, an outer wall section, an inner wall section which is one of a parallel wall section and a cylindrical wall section, and an inwardly sloping section which is one of a beveled section and a rounded section
- the outer wall section defining an opening width which is greater than an opening width of the inner wall section;
- the inwardly sloping section being arranged between the outer wall section and the inner wall section;
- and
- the inwardly sloping section being arranged offset in a direction of a depth of the at least one opening and at a distance from the outer circumferential surface;
- wherein the inwardly sloping section counteracts a volume reduction of the at least one opening when the press device is loaded.
10 more elements
Dependencies are inferred from the claim text.