Drying for patterned paper webs
AssigneeThe Procter & Gamble Company
InventorDean Van Phan
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Abstract
A paper web and method of making the paper web are disclosed. In one embodiment the paper web includes a continuous relatively thinner region and a plurality of discrete relatively thickner regions. The relatively thicker regions are disposed in the plane of the relatively thinner region. The paper web can have a relatively patterned face and a relatively smooth face. The paper structures can be dried relatively quickly and efficiently, and can provide enhanced absorbency and bulk density while having a relatively smooth face.
Claims4
A method of forming a paper web having a patterned surface, the method comprising the steps of:
- providing an aqueous dispersion of papermaking fibers;
- providing a foraminous forming member;
- forming an embryonic web of the papermaking fibers on the foraminous forming member, the embryonic web having a first face and a second face;
- providing a web support apparatus having a web facing side comprising a first web contacting surface and a continuous second web contacting surface, wherein a difference in elevation between the first and second web contacting surfaces is less than the thickness of the embryonic web;
- providing a heated drying surface;
- transferring the embryonic web from the foraminous forming member to the web support apparatus wherein the first surface of the web is supported on the first and second web contacting surfaces of the web support apparatus;
- imparting a predetermined continuous network pattern to the first face of the embryonic web at a web consistency of between about 10 percent and about 60 percent;
- transferring the embryonic web to the heated drying surface at a consistency between about 20% to about 60 percent, wherein substantially all of the second face of the second surface of the embryonic web is positioned adjacent and supported on the heated drying surface;
- and
- drying the embryonic web on the heated drying surface to a consistency of at least about 90 percent at a web speed of at least 4500 feet per minute thereby forming a paper having a basis weight of at least about 10 pounds per 3000 square feet.
Dependencies are inferred from the claim text.