A cord containment adaptor can be adaptively anchored or fixed to or removed from an earphone cord of a set of earphones by hand via an anchor slot of the adaptor. The anchor slot can have a frame or structure that may have multiple earphone cord entrapment chambers and/or an offset or non-linear path leading to an earphone cord entrapment chamber or chambers to help anchor the cord containment adaptor on the cord segment to prevent inadvertent dislodgement of the cord containment adaptor from the earphones. The structure of the anchor slot can be rigid and serves to firmly grip or compress earphone cord segments positioned between gapped-apart opposing sidewalls within the anchor slot. Entrapment chambers of the anchor slot are connected to every other entrapment chamber via cord passageways through which an earphone cord segment can pass. The cord containment adaptor may contain cord containment slots separate from the anchor slot. When a cord containment adaptor is anchored via the anchor slot, earphone cord segments can be gripped into slots in a manner that contains loose cord ends and helps prevent tangling of earphone cords when the earphones are stored or not in use. The adaptor can remain fixed to an earphone cord segment during audio listening by a user and during storage of an earphone set.

A cord containment adaptor can be adaptively anchored or fixed to or removed from an earphone cord of a set of earphones by hand via an anchor slot of the adaptor. The anchor slot can have a frame or structure that may have multiple earphone cord entrapment chambers and/or an offset or non-linear path leading to an earphone cord entrapment chamber or chambers to help anchor the cord containment adaptor on the cord segment to prevent inadvertent dislodgement of the cord containment adaptor from the earphones. The structure of the anchor slot can be rigid and serves to firmly grip or compress earphone cord segments positioned between gapped-apart opposing sidewalls within the anchor slot. Entrapment chambers of the anchor slot are connected to every other entrapment chamber via cord passageways through which an earphone cord segment can pass. The cord containment adaptor may contain cord containment slots separate from the anchor slot. When a cord containment adaptor is anchored via the anchor slot, earphone cord segments can be gripped into slots in a manner that contains loose cord ends and helps prevent tangling of earphone cords when the earphones are stored or not in use. The adaptor can remain fixed to an earphone cord segment during audio listening by a user and during storage of an earphone set.

The present invention achieves a separator core that is easy to clean and that will have no or few remaining foreign substances and a separator roll obtained by winding a separator around the separator core. Provided is a separator core around which a separator is wound or is to be wound, in which at least one of (i) a connection between a surface of a support part and the inner peripheral surface of the outer cylindrical part and (ii) a connection between the surface of the support part and the outer peripheral surface of the inner cylindrical part is made smoothly by a curved face.

The present invention achieves a separator core that is easy to clean and that will have no or few remaining foreign substances and a separator roll obtained by winding a separator around the separator core. Provided is a separator core around which a separator is wound or is to be wound, in which at least one of (i) a connection between a surface of a support part and the inner peripheral surface of the outer cylindrical part and (ii) a connection between the surface of the support part and the outer peripheral surface of the inner cylindrical part is made smoothly by a curved face.

The present invention efficiently avoids distortion at an edge and achieves a separator core which has strength. The present invention achieves: a separator core in which an outer cylindrical part has a linearly inclined face at an edge of an outer peripheral surface thereof; and a separator roll including the separator core and a separator for a nonaqueous electrolyte secondary battery wound around the separator core. The present invention provides a method of producing the separator roll.

The present invention efficiently avoids distortion at an edge and achieves a separator core which has strength. The present invention achieves: a separator core in which an outer cylindrical part has a linearly inclined face at an edge of an outer peripheral surface thereof; and a separator roll including the separator core and a separator for a nonaqueous electrolyte secondary battery wound around the separator core. The present invention provides a method of producing the separator roll.

A glass roll (1) includes a laminate film (5) taken up into a roll shape, the laminate film including a glass film (2), a protective film (3), and an adhesive layer (4), which is arranged between the glass film (2) and the protective film (3), and is configured to bond the glass film (2) to the protective film (3). A width (A) of the protective film (3) is larger than a width (B) of the glass film (2), and both end portions (3x) of the protective film (3) in a width direction each protrude with respect to the glass film (2). The width (B) of the glass film (2) is larger than a width (C) of the adhesive layer (4), and both end portions (2x) of the glass film (2) in the width direction each protrude with respect to the adhesive layer (4).

A ribbon cord containment and identifying adaptor can be adaptively anchored or fixed to or removed from a ribbon type cord or ribbon cord of a set of earphones by hand via an anchor slot of the adaptor. The anchor slot can have a frame or structure that has an entrapment chamber and a path leading to a cord entrapment chamber where the entrapment chamber is slanted with respect to the path leading to the entrapment chamber. The structure of the entrapment chamber and path help anchor the adaptor on the ribbon type cord segment to prevent inadvertent dislodgement of the adaptor from the cord segment. The structure of the anchor slot is rigid and serves to firmly grip or compress cord segments positioned between gapped-apart opposing sidewalls within the anchor slot. When a cord containment adaptor is anchored via the anchor slot, ribbon type cord segments can be gripped into slots in a manner that helps prevent the adopter from dislodging from the ribbon cord. When positioned on cord segments, the adaptors can serve as identifying objects or adaptors.

A ribbon cord containment and identifying adaptor can be adaptively anchored or fixed to or removed from a ribbon type cord or ribbon cord of a set of earphones by hand via an anchor slot of the adaptor. The anchor slot can have a frame or structure that has an entrapment chamber and a path leading to a cord entrapment chamber where the entrapment chamber is slanted with respect to the path leading to the entrapment chamber. The structure of the entrapment chamber and path help anchor the adaptor on the ribbon type cord segment to prevent inadvertent dislodgement of the adaptor from the cord segment. The structure of the anchor slot is rigid and serves to firmly grip or compress cord segments positioned between gapped-apart opposing sidewalls within the anchor slot. When a cord containment adaptor is anchored via the anchor slot, ribbon type cord segments can be gripped into slots in a manner that helps prevent the adopter from dislodging from the ribbon cord. When positioned on cord segments, the adaptors can serve as identifying objects or adaptors.

A winding core with improved beam and hoop strength and diminished friability and method for manufacturing such a core are provided, the winding core comprising: an extruded wood fiber core member; and at least one preformed paper shell member having a split seam parallel to its major axis, the shell being adhered to an exterior surface of the extruded wood fiber core member and a secondary shell of wooden staves.