The present invention is an array of sanitary tissue products. The array of sanitary tissue products comprises a first packaged article and a second packaged article. The first packaged article comprises a first rolled sanitary tissue product wound onto a first fibrous core. The second packaged article comprises a second rolled sanitary tissue product wound onto a second fibrous core. The second rolled sanitary tissue product is wound loosely relative to the first rolled sanitary tissue product. The second fibrous core has an axial strength greater than the first fibrous core.

A leading edge device for incorporation into an introductory portion a concave cradle is disclosed d. The concave cradle is associated with an upper winding roller of a surface winder to form a winding cradle for winding a web material having a velocity, v, around a core having a radius, R, inserted therein to obtain a log. The leading edge device has a surface having a texture provided thereto for contacting the core.

A leading edge device for incorporation into an introductory portion a concave cradle is disclosed d. The concave cradle is associated with an upper winding roller of a surface winder to form a winding cradle for winding a web material having a velocity, v, around a core having a radius, R, inserted therein to obtain a log. The leading edge device has a surface having a texture provided thereto for contacting the core.

A surface winder for winding a web material around a core to obtain a log is disclosed. The surface winder provides a core inserter for inserting a core into an introductory portion of a winding cradle defined by an upper winding roller, a concave cradle, a lower winding roller, and a third oscillating roller. The concave cradle has a leading edge device having a surface with at least one channel disposed therein. The at least one channel has a single entry point and a single exit point and extending from a position external to the leading edge device and a first location disposed upon the surface capable of receiving a fluid from the at least one channel. The fluid is fluidically displaced onto the core from the at least one channel when the core is in contacting engagement with the first location disposed upon the surface.

A surface winder for winding a web material around a core to obtain a log is disclosed. The surface winder provides a core inserter for inserting a core into an introductory portion of a winding cradle defined by an upper winding roller, a concave cradle, a lower winding roller, and a third oscillating roller. The concave cradle has a leading edge device having a surface with at least one channel disposed therein. The at least one channel has a single entry point and a single exit point and extending from a position external to the leading edge device and a first location disposed upon the surface capable of receiving a fluid from the at least one channel. The fluid is fluidically displaced onto the core from the at least one channel when the core is in contacting engagement with the first location disposed upon the surface.

Provided is toilet paper which is excellent in thickness feeling and water disintegrability, has sufficient softness, gives a sense of security for human bodies during use, and is environmentally friendly.

Toilet paper has three or four plies. The basis weight is 12.5 to 15.5 g/m.sup.2 per ply. 80 to 100 mass % of fiber is softwood kraft pulp that is subjected to oxygen pulping and is not bleached with chlorine. The toilet paper contains a cationic fatty acid amide-based softener, and has a paper thickness of 120 to 150 μm per ply, a paper thickness of 400 to 600 μm as a whole of the toilet paper, and a water disintegrability of 10 seconds or less.

Provided is toilet paper which is excellent in thickness feeling and water disintegrability, has sufficient softness, gives a sense of security for human bodies during use, and is environmentally friendly.

Toilet paper has three or four plies. The basis weight is 12.5 to 15.5 g/m.sup.2 per ply. 80 to 100 mass % of fiber is softwood kraft pulp that is subjected to oxygen pulping and is not bleached with chlorine. The toilet paper contains a cationic fatty acid amide-based softener, and has a paper thickness of 120 to 150 μm per ply, a paper thickness of 400 to 600 μm as a whole of the toilet paper, and a water disintegrability of 10 seconds or less.

The toilet paper dispenser as claimed for the invention including a housing in which is housed a roll of a paper strip, which has perforations transverse to strip defining rectangular paper sheets whose width is transverse and whose length is longitudinal. Housing features a nozzle with a dispensing orifice, by means of which the paper strip is unwound. The dispenser is characterized in that the nozzle and the paper roll are disposed in such a way that the paper sheets unwind one by one and emerge with a reduced crumpling as they exit the nozzle, the width of a sheet is between 125 mm and 180 mm, and the ratio of the width of a sheet to its length is between 0.45 and 1, preferably between 0.5 and 0.65, the paper being consumed optimally and in a pleasant manner.

The toilet paper dispenser as claimed for the invention including a housing in which is housed a roll of a paper strip, which has perforations transverse to strip defining rectangular paper sheets whose width is transverse and whose length is longitudinal. Housing features a nozzle with a dispensing orifice, by means of which the paper strip is unwound. The dispenser is characterized in that the nozzle and the paper roll are disposed in such a way that the paper sheets unwind one by one and emerge with a reduced crumpling as they exit the nozzle, the width of a sheet is between 125 mm and 180 mm, and the ratio of the width of a sheet to its length is between 0.45 and 1, preferably between 0.5 and 0.65, the paper being consumed optimally and in a pleasant manner.

A sheet product (e.g., napkin) dispenser may include an example calibration system and method for a product depletion curve for accurately determining a product level. An example sheet product dispenser includes a housing, a roll holder, a dispensing mechanism, a sensor, and a controller. The sensor is configured to emit a signal toward the product roll and receive a return signal. The controller is configured to receive a calibration product roll and operate the sensor to emit the signal and receive the return signal. The controller determines a brightness value of the return signal and determines a calibration value associated with the determined brightness value. The determined brightness value is within a range of brightness values associated with the calibration value. The controller adjusts a product depletion curve based on at least the determined calibration value and the determined brightness value. Additionally, example product level notification systems are provided herein.