D - Textiles – Paper – 21 – F
Patent
D - Textiles, Paper
21
F
D21F 1/10 (2006.01) D21F 5/18 (2006.01) D21F 7/08 (2006.01) D21F 11/14 (2006.01)
Patent
CA 2470827
Highly textured tissue sheets, particularly suitable for use as bath tissue, are produced by throughdrying and have a low number and/or low amount of pinholes. The low number or amount of pinholes is provided by using a throughdrying fabric having parallel wide ridges with a height suited to the particular tissue sheet being produced. Thus the invention relates to a continuous method of making bath tissue and paper towels on the same papermaking machine comprising: (a) forming a tissue web having a first basis weight; (b) transferring the tissue web to a throughdrying fabric having continuous machine-direction ridges separated by valleys, wherein the height of the ridges is from about 0.5 to about 3.5 millimeters or greater, the width of the ridges is about 0.3 centimeter or greater and the frequency of the ridges in the cross-machine direction is from about 0.2 to about 3 per centimeter; (c) throughdrying the tissue web; (d) winding the tissue web into a parent roll; (e) converting the parent roll into paper toweling; (f) forming the tissue web having a second basis weight which is less than the first basis weight; (g) transferring the web to the same throughdrying fabric of step (b); (h) throughdrying the web; (i) winding the dried web info a parent roll; and (j) converting the parent roll into bath tissue. Tissues can be produced such that a tissue sheet having Wide Wales, a basis weight of from about 10 to about 35 grams per square meter (gsm) and one or more of the following pinhole- related indexes: a Pinhole Coverage Index of about 0.25 or less, a Pinhole Count Index of about 65 or less and a Pinhole Size Index of about 600 or less.
L'invention concerne des feuilles de papier de soie hautement textur~es, particulirement adapt~es pour Útre utilis~es en tant que serviettes de toilette, obtenues par s~chage ~ air traversant et pr~sentant un petit nombre et/ou une petite quantit~ de piqÛres. On obtient un petit nombre ou une petite quantit~ de piqÛres par utilisation d'un tissu de s~chage ~ air traversant pr~sentant de larges lignes en relief parallles avec une hauteur adapt~e ~ la feuille de papier de soie sp~cifique en cours de fabrication.
Bakken Andrew Peter
Burazin Mark Alan
Kowalski Christopher Scott
Kressner Bernhardt Edward
Mullally Cristina Asensio
Borden Ladner Gervais Llp
Kimberly-Clark Worldwide Inc.
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