Method of making a clothlike pattern densified web
View Patent ↗An improved paper and the process of making an improved paper web are disclosed. The improved paper is characterized as having two regions; one is a network (or open grid) region and the other is a plurality of domes. At least a portion of either region of the paper web contains a bonding material that penetrates at least partially through the paper's thickness.
1. A process for making a paper web comprising the steps of:
forming an embryonic paper from paper making fibers;
contacting the embryonic web with a deflection member having an embryonic web contacting surface comprising a macroscopically monoplanar, patterned, continuous network surface defining within the deflection member a plurality of discrete, isolated, nonconnecting deflection conduits; and the deflection member having a second surface;
deflecting at least a portion of the embryonic web into the deflection conduits intermediate the embryonic web contacting surface and the second surface to form an intermediate web of the papermaking fibers having domes surrounded by a network region, said domes corresponding to the deflection conduits and the network region corresponding to the network surface of the deflection member;
predrying the intermediate web in association with the deflection member to a consistency of from about 25% to about 98% to form a pre-dried web of paper making fibers;
applying a majority of a bonding material to the network region of the pre-dried web while the pre-dried web remains in association with the deflection member, thereby forming a bond material penetrated paper web;
pressing the bond material penetrated web, while remaining in association with the deflection member, against an impression surface to form an imprinted web of papermaking fibers having a network region; and
drying the web.
2. The process of claim 1 wherein the embryonic web is formed from an aqueous dispersion of papermaking fibers.
3. The process of claim 2 further comprising hydrating the air laid embryonic web with water prior to deflecting the embryonic web into the deflection conduits.
4. The process of claim 1 wherein the embryonic web is an air laid web of papermaking fibers.
5. The process of claim 1 further comprising foreshortening the bond material penetrated paper web.
6. The process of claim 1 further comprising foreshortening the bond material penetrated paper web and then curing the bond material.
7. The process of claim 1 wherein pressing the bond material penetrated web against an impression surface comprises interposing the pre-dried web and the deflection member between an impression nip roll and a Yankee dryer.
8. The process of claim 1 wherein the applying a majority of a bonding material to the network region of the pre-dried web comprises interposing the pre-dried web and the deflection member between an anvil roll and a transfer roll.
9. process of claim 8 further comprising applying a vacuum to the anvil roll.
10. The process of claim 9 further comprising wrapping the deflection member and pre-dried web at least partially around a circumference of the vacuum anvil roll.