Method of rebuilding a conventional tissue machine to a TAD machine
Patent 5397437 Issued on March 14, 1995. Estimated Expiration Date: 
January 31, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
January 31, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3301746 3303576 3821068 3891500 Web dryer arrangement High bulk tissue forming and drying apparatus Process and apparatus for forming a paper web having improved bulk and absorptive capacity Paper machine with twin-wire former Web drier section Transferring a web from a pick-up fabric to a flow-through drying wire InventorAssigneeApplicationNo. 189808 filed on 01/31/1994US Classes:162/203, Forming single web between opposed forming surfaces162/111, Creping and/or crinkling162/206, With heating and/or cooling162/207, Heating, cooling, gas or vapor contact162/359.1With separate heated drying meansExaminersPrimary: Hastings, Karen M.Attorney, Agent or FirmInternational ClassesD21F 001/00D21F 005/18 Foreign Application Priority Data1992-04-23 SEAbstractIn a known method of rebuilding a conventional tissue machine having a conventional C-wrap type twin wire forming section to a TAD machine, a TAD section, which includes a looped TAD fabric (24) and at least one TAD cylinder (22) located inside of the TAD fabric loop for thermally predrying the formed paper web (13) by passing hot air through the web, is incorporated in the machine. The rebuilding costs can be reduced, and reduced production costs for the web (13) as well as an increased quality of the produced web can be obtained by substituting a new outer forming fabric (35 or 43) for the existing one (3), said new outer fabric being longer than the existing one and having a comparatively plane web facing surface, so that on separating the two forming fabrics from each other the formed paper web (13) will adhere to and be carried by the web facing surface of the new outer forming fabric (35 or 43), and by providing means (36,37) for guiding the new outer forming fabric (35 or 43) with its web facing surface into contacting relationship with the TAD fabric (24) upstream of or on the TAD cylinder (22). A new C-wrap type twin wire former, which gives a drier web and is suitable for use in a TAD machine for the manufacture of high basis weight sanitary paper, is disclosed.Field of SearchCreping and/or crinklingBy configured forming mold Forming single web between opposed forming surfaces With heating and/or cooling Heating, cooling, gas or vapor contact Molding and heat exchange means Plural molds or plural spaced areas of application on a single mold Common vat or stock feed With separate heated drying means Conditioning, preparing or repairing of apparatus Wire stringing With folding, rolling or twisting means Tube winding type With tube cutting or slitting means Moving impermeable member applying stock to mold Mold intermittently moving relative to supply Circumferentially grooved cylinder Cylinder and doctor With product winding or reeling means Apparatus repair, cleaning or conditioning To cylinder Product slides relative to molding surface (e.g., extrusion molding) Running or indefinite length product forming and/or treating means Means applying fluid Wire changing and/or tensioning With suction means Reciprocating Web creping or crinkling type With cutting, scoring, perforating or tearing Means flinging or projecting stock against mold Of porous or foraminous member (e.g., felt or mold) And suction means Molding and burnishing means | |
