Impingement air dry process for making absorbent sheet

a technology of absorbent cells and absorbent sheets, applied in papermaking, non-fibrous pulp addition, coatings, etc., can solve the problems of fiber, wet press operations, fiber, and energy-intensive conventional thermal dewatering with hot air, and achieve the effect of reducing the cost of fibers, and increasing the cost of square
US20020088577A1Inactive Publication Date: 2002-07-11GPCP IP HLDG LLC
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
GPCP IP HLDG LLC
Publication Date
2002-07-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for making absorbent sheet includes: (a) depositing an aqueous furnish of cellulosic fiber on a forming fabric; (b) dewatering the wet web to a consistency of from about 15 to about 40 percent; (c) transferring the dewatered web from the forming fabric to another fabric traveling at a speed of from about 10 to about 80 percent slower than the forming fabric; (d) wet-shaping the web on an impression fabric whereby the web is macroscopically rearranged to conform to the surface of the impression fabric; and (e) impingement air drying the web. The process is particularly suitable for making high bulk products form difficult to process furnishes such as recycle furnishes and for making high basis weight products without compressive dewatering with a papermaking felt.
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Description

CLAIM FOR PRIORITY

[0001] This non-provisional application claims the benefit of the filing date of U.S. Provisional Patent Application Ser. No. 60 / 199,301, of the same title, filed Apr. 24, 2000.TECHNICAL FIELD

[0002] The present invention relates to methods of making absorbent cellulosic sheet in general, and more specifically to a process for making a non-compressively dewatered, impingement air dried absorbent sheet.BACKGROUND

[0003] Methods of making paper tissue, towel, and the like are well known. Typically, such processes include conventional wet pressing and throughdry processes. Conventional wet pressing processes have certain advantages over conventional through air drying processes including: (1) lower energy costs associated with the mechanical removal of water rather than transpiration drying with hot air; (2) higher production speeds are more readily achieved with processes which utilize wet pressing to form a web; and (3) the process is relatively robust in that it does...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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