Abstract: This invention is directed to alkylphenol ethoxylate (APE)-free polymer binders formed by aqueous free radical emulsion polymerization and having specific peel and cure properties. The APE-free polymeric binders have a peel value, when adhered to a heated metal surface, of 35% to 200% of the peel value shown by a standard APE-based polymer binder control and exhibit a cure profile such that at least 55% cure is achieved within 30 seconds at a temperature required for cure, and a wet tensile strength at 30-seconds of cure of at least 1000 g/5 cm. Wet tensile strength is used as a measure of cure. Binders having the peel and cure properties described herein can be considered for use in crepe processes, especially DRC processes.

Abstract: A system includes a roll formed from a conductive material, where the roll is configured to rotate about an axis. The system also includes at least one induction heating workcoil configured to generate multiple magnetic fluxes within the roll. Each induction heating workcoil includes at least two separately wound coils. The multiple magnetic fluxes when spatially summed have a substantially null magnetic flux vector. An induction heating workcoil could represent a balanced induction heating workcoil that is configured to individually generate multiple magnetic fluxes that when spatially summed have the substantially null magnetic flux vector. Multiple induction heating workcoils could also represent unbalanced induction heating workcoils configured to collectively generate multiple magnetic fluxes that when spatially summed have the substantially null magnetic flux vector.

Abstract: A dry end of a tissue machine is made shorter by close-coupling a reel-up to the drying section and supporting the web from the drying section to the reel-up by a foil or a belt such that web stability is maintained, thus allowing high-speed operation. The foil's downstream edge can form a nip with the paper roll and nip load can be controlled by controlling pivotal movement of the foil. The reel-up can include a calendering belt for calendering the web as it passes through a nip between the belt and a reel drum supported on the belt, and a rotatable reel spool on which a paper roll is wound in nipping engagement with the reel drum. Alternatively, the reel drum can be eliminated and the paper roll can be supported on the belt. A composite shaftless core for winding is also disclosed.

Abstract: The energy efficiency of a primary drying papermaking process is improved by the use of auxiliary dryers to dry the wet tissue webs to a final moisture of about 5% or less and adjust the CD moisture profiles of the wet and partially-dried tissue webs.

Abstract: A method and arrangement for drying a paper to be surface-treated, in particular fine paper, in an after-dryer in a paper machine. The paper web is first dried in a forward dryer section of the paper machine by one or more groups with single-wire draw that are open downward on support of a drying wire, the paper web is then finished in a finishing section, e.g., surface-sized or coated, and thereafter, the paper web is dried by an upwardly open inverted group with single-wire draw. In the inverted group with single-wire draw, the tendency of curling formed in the paper web in the forward dryer section can be substantially eliminated and/or compensated for.

Abstract: A method and apparatus for processing a web of material, which is dispensed from a roll and fed through at least one roller gap of a roller-gap system which includes a processing station, an unrolling station on the input side of the processing station, and a roll magazine on the input side of the unrolling station which magazine includes at least one roll storage position. When rolls of web material are processed, the processing delay times lead to an uneven distribution of the temperature and/or moisture within the roll which in turn causes nonuniformity of the results in the processing station. The web of material still on the roll is exposed, prior to being unrolled, to a preselected atmospheric environment for a predetermined minimum length of time. Accordingly, the roll storage position is located in a chamber, the atmosphere of which can be controlled to a preset temperature and/or humidity level.

Abstract: A cylindrical composite paperboard cushion core for winding a sheet material therearound without forming undesirable stepwise marks thereon, comprises a cylindrical paperboard substrate and a cushion layer formed on the cylindrical paperboard substrate from an expanded paper sheet having a density of 0.1 to 0.4 g/cm.sup.3, the expanded paper sheet being formed by forming an unexpended paper sheet containing therein a plurality of expansible microcapsules each having a volatile liquid core contained in a thermoplastic resin shell and capable of starting an expansion at a temperature of 80.degree. C. to 200.degree. C., and heating the unexpanded paper sheet at the expansion-starting temperature of the microcapsules or higher, to cause the paper sheet to be expanded.

Abstract: An unsintered metal fiber burner is produced by mixing ceramic fibers with the metal fibers and binding the mixed metal-ceramic fibers together as a porous layer adherent to a foraminous support. By mixing ceramic fibers with metal fibers, the cost of a sintered metal fiber burner is reduced while the novel burner, because of the metal fiber therein, exhibits improved properties such as greater radiant efficiency, lower NO.sub.x emissions and increased durability.

Abstract: This invention discloses a process for producing 2,6-bis (4-hydroxy-3,5-dimethoxyphenyl)-3,7-dioxabicyclo [3.3.0] octane, i.e. syringaresinol and stereo-isomers thereof, from plants which contain lignin with syringyl unit. The process comprises heating plant under pressure in hydrous condition, and then quickly discharging them therefrom into an environment at atmospheric pressure so as to explode into pieces and subjecting the fine pieces to extraction with organic solvent such as methanol and acetone or an alkaline solution such as sodium hydroxide and purification. Syringaresinols are useful like ginseng as a tonic.

Abstract: A calender roll comprises a substantially cylindrical roll body formed with a multiplicity of angularly equispaced axial heating passages proximal to a rolling periphery of the body, and a pair of recesses opening axially outwardly at opposite ends thereof, the recesses having bottom surfaces; and respective flange journal stubs formed with end faces defining respective gaps with the bottoms of the recesses. The gaps communicate with the axial passages and at least one of the stubs is provided with an axially extending bore communicating with at least one of the gaps for passing a heating medium through the axial passages. The heating medium is distributed to the axial passages by one of the gaps and is recovered from the axial passages by the other of the gaps.