A separator roll etc. capable of reducing meandering is provided. The separator roll includes a core and a battery separator wound around the core. The core has an axis hole along a central axis of the core. A value, obtained by dividing a difference between a diameter of the core and a diameter of the axis hole by a width of the core in a direction of the central axis, is not less than 0.3 and not more than 1.5.

A reel body is the reel body in which an adhesive film having an adhesive layer on a base material layer is wound around a winding core. The adhesive film does not have a protective layer on the adhesive layer and is wound around the winding core in a state in which the adhesive layer and the base material layer are contiguous to each other in the radial direction of the winding core. A width of the winding core in an axial direction is smaller than a width of the adhesive film. In a rolled body of the adhesive film, an overhang portion jutting out in the axial direction of the winding core is provided.

A reel body is the reel body in which an adhesive film having an adhesive layer on a base material layer is wound around a winding core. The adhesive film does not have a protective layer on the adhesive layer and is wound around the winding core in a state in which the adhesive layer and the base material layer are contiguous to each other in the radial direction of the winding core. A width of the winding core in an axial direction is smaller than a width of the adhesive film. In a rolled body of the adhesive film, an overhang portion jutting out in the axial direction of the winding core is provided.

A fabric roll up core for carrying rolls of sheet material such as ground covers or canopy sheet materials including netting materials, used in agriculture or horticulture, such as bird, insect, hail, shade, wind barrier netting materials, comprises a profile formed in an outer surface that assists in maintaining the sheet material on the fabric roll up core when rolling the sheet material onto the fabric roll up core and which may be effective to work with roll up drive means. The core may be formed in one piece or as multiple connected parts.

A fabric roll up core for carrying rolls of sheet material such as ground covers or canopy sheet materials including netting materials, used in agriculture or horticulture, such as bird, insect, hail, shade, wind barrier netting materials, comprises a profile formed in an outer surface that assists in maintaining the sheet material on the fabric roll up core when rolling the sheet material onto the fabric roll up core and which may be effective to work with roll up drive means. The core may be formed in one piece or as multiple connected parts.

An adhesive tape support substrate for supporting adhesive tape in use. The support substrate has an outer surface, an outwardly facing surface and/or an outermost surface of the support substrate that is or visually appears black or near black in colour, or is or appears visually as another colour other than black or near black and has a light reflection value (LRV) of approximately 65% or less and/or a light absorption value (LAV) of approximately 35% or more.

An adhesive tape support substrate for supporting adhesive tape in use. The support substrate has an outer surface, an outwardly facing surface and/or an outermost surface of the support substrate that is or visually appears black or near black in colour, or is or appears visually as another colour other than black or near black and has a light reflection value (LRV) of approximately 65% or less and/or a light absorption value (LAV) of approximately 35% or more.

A method for producing long-term bendable glass material includes: bending a glass material in a bending radius in a range of 1 mm to 10.sup.7 mm; storing the bent glass material for a time period of at least 1 day; inspecting at least a portion of the bent glass material for damage after the storing; and classifying the inspected bent glass material as a reject if damage is detected or as a long-term bendable glass material if no damage is detected.

A method for producing long-term bendable glass material includes: bending a glass material in a bending radius in a range of 1 mm to 10.sup.7 mm; storing the bent glass material for a time period of at least 1 day; inspecting at least a portion of the bent glass material for damage after the storing; and classifying the inspected bent glass material as a reject if damage is detected or as a long-term bendable glass material if no damage is detected.

A safety chuck mounted to equipment that process web material is provided. The safety chuck is provided with a die spring connecting a moveable jaw with a spindle, said spring urging the moveable jaw into a fully closed position. A number of magnets mounted on a mounting flange will engage the moveable jaw, overcoming the spring's force and holding the moveable jaw in a fully open position. Rotation of the spindle releases the magnets allowing the spring to force the moveable jaw back into a fully closed position.