A core for winding sheet material is proved. The core comprises a cylindrical tube having a longitudinally oriented slot formed therein, and a strip of soft material located in the slot. Because of the geometry of the slot and the strip, the strip may be softer (less compressed) in the central region but firmer where the core transitions from the relatively soft strip to the relatively hard tube. The leading edge of the sheet material imbeds itself into the soft central region of the strip as additional layers are wound around the core.

A core for winding sheet material is proved. The core comprises a cylindrical tube having a longitudinally oriented slot formed therein, and a strip of soft material located in the slot. Because of the geometry of the slot and the strip, the strip may be softer (less compressed) in the central region but firmer where the core transitions from the relatively soft strip to the relatively hard tube. The leading edge of the sheet material imbeds itself into the soft central region of the strip as additional layers are wound around the core.

A glass roll of band-shaped glass film is free of skew and single slack when a roll-to-roll mode is used. The band-shaped glass film is wound into a roll shape and has creases formed thereon. The band-shaped glass film includes an effective section with two side edges in a width direction extending parallel to each other, and leading and trailing end portions extending parallel to the width direction. When a length from the leading end portion to the trailing end portion along a surface of the effective section is measured along each of a first position along one side edge and a second position along another side edge, a difference between the first and second measurement lengths is 400 ppm or less of a longer measurement length of the first and second measurement lengths.

A glass roll of band-shaped glass film is free of skew and single slack when a roll-to-roll mode is used. The band-shaped glass film is wound into a roll shape and has creases formed thereon. The band-shaped glass film includes an effective section with two side edges in a width direction extending parallel to each other, and leading and trailing end portions extending parallel to the width direction. When a length from the leading end portion to the trailing end portion along a surface of the effective section is measured along each of a first position along one side edge and a second position along another side edge, a difference between the first and second measurement lengths is 400 ppm or less of a longer measurement length of the first and second measurement lengths.

A coreless roll of absorbent sheet products is made of a spirally wound web of absorbent substrate including at least two superposed plies of absorbent substrate, the web of absorbent substrate being wound such as to define an axial hollow passageway centrally positioned relatively to the coreless roll and extending from one edge to another edge of the coreless roll. The web of absorbent substrate further includes a stiffening insert, the stiffening insert being inserted in-between two superposed plies of absorbent substrate, the stiffening insert being positioned such as to line the axial hollow passageway, the stiffening insert having a length such that the stiffening insert extends at least around three quarter of a circumference of the passageway, preferably substantially completely around a circumference of the passageway.

A coreless roll of absorbent sheet products is made of a spirally wound web of absorbent substrate including at least two superposed plies of absorbent substrate, the web of absorbent substrate being wound such as to define an axial hollow passageway centrally positioned relatively to the coreless roll and extending from one edge to another edge of the coreless roll. The web of absorbent substrate further includes a stiffening insert, the stiffening insert being inserted in-between two superposed plies of absorbent substrate, the stiffening insert being positioned such as to line the axial hollow passageway, the stiffening insert having a length such that the stiffening insert extends at least around three quarter of a circumference of the passageway, preferably substantially completely around a circumference of the passageway.

Provided is an adhesive film storage box including a main body and a cover. The main body has at least a front plate, a bottom plate, a back plate, and side plates, and has an open upper surface. The cover has at least a cover plate and a covering piece. The cover plate is connected to an upper edge of the back plate of the main body so as to oppose the upper surface of the main body. The covering piece is connected to a front edge of the cover plate so as to oppose a front surface of the main body. A cutting blade capable of cutting an adhesive film is provided on a lower edge of the covering piece. The height of the front plate is set to be lower than the height of the back plate and the side plates.

Provided is an adhesive film storage box including a main body and a cover. The main body has at least a front plate, a bottom plate, a back plate, and side plates, and has an open upper surface. The cover has at least a cover plate and a covering piece. The cover plate is connected to an upper edge of the back plate of the main body so as to oppose the upper surface of the main body. The covering piece is connected to a front edge of the cover plate so as to oppose a front surface of the main body. A cutting blade capable of cutting an adhesive film is provided on a lower edge of the covering piece. The height of the front plate is set to be lower than the height of the back plate and the side plates.

A web material dispenser includes a housing and a pivotable roll support assembly provided therein. A first mandrel is provided at a first attachment location of the roll support assembly to support a first roll of web material. A second mandrel is provided at a second location of the roll support assembly to support a second roll of web material. The web material dispenser permits one-handed operation to replace the rolls of web material and to change positions of the mandrels within the dispenser. The roll support assembly may have a linkage arm and/or a roll support arm. Positions of the first and second mandrels relative to the dispenser's opening can be switched by pivoting the linkage arm relative to the housing and by pivoting the roll support arm relative to the linkage arm. A method for switching positions of rolls in the web material dispenser is also provided.

A bushing for a web material roll including a body sized to be fitted into the web material roll; the bushing further including a wall extending across the central cavity of the web material roll when the bushing is in the central cavity of the web material roll and defining an opening for receiving a roll support therethrough, the opening being bordered by a roll support contacting surface, the bushing having one or more bearing surfaces for contacting the roll support and supporting the web material roll, the one or more bearing surfaces including at least the roll support contacting surface bordering the opening. A web material roll, a web material roll retention assembly and a method for placing a web material roll in a web material roll dispenser are also provided.