Multilayer belt for creping and structuring in a tissue making process
AssigneeAlbany International Corp.
InventorsDana Eagles, Robert Hansen, Jonas Karlsson, Manish Jain, Dhruv Agarwal
Life of this patent
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Abstract
A multilayer belt structure that can be used for creping or structuring a cellulosic web in a tissue making process. The multilayer belt structure allows for the formation of various shaped and sized openings in the top surface of the belt, while still providing a structure having the strength, durability, and flexibility required for tissue making processes.
Claims51
A permeable belt for creping or structuring a web in a tissue making process, the belt comprising:
- a first layer formed from an extruded polymeric material, the first layer providing a first outside surface of the belt on which a nascent tissue web is deposited, and the first layer having a plurality of openings extending therethrough, with the plurality of openings having an average cross-sectional area on the plane of the first surface of at least about 0.1 mm2;
- and
- a second layer attached to the first layer, the second layer forming a second outside surface of the belt, and the second layer having a plurality of openings extending therethrough.
A permeable belt for creping or structuring a web in a tissue making process, the belt comprising:
- a first layer formed from an extruded polymeric material, the first layer providing a first surface of the belt, and the first layer having a plurality of openings extending therethrough, with the plurality of openings having a volume of at least about 0.05 mm3, and at least one uniformly raised continuous edge being formed around at least one of the plurality of openings;
- and
- a second layer attached to the first layer at an interface, the second layer providing a second surface of the belt, and the second layer being formed from a woven fabric having a permeability of at least about 200 CFM.
A permeable belt for creping or structuring a web in a tissue making process, the belt comprising:
- a first layer formed from an extruded polymeric material, the first layer providing a first outside surface of the belt, and the first layer having a plurality of openings extending therethrough, wherein the first surface (i) provides about 10% to about 65% contact area and (ii) has an opening density of about 10/cm2 to about 80/cm2;
- and
- a second layer attached to the first layer, the second layer forming a second outside surface of the belt, and the second layer having a plurality of openings extending therethrough.
Dependencies are inferred from the claim text.