TH26604A - Single layer label for batteries - Google Patents

Abstract

This invention relates to a single-layer label for enclosing a dry-cell battery, with a long sheath defining the axis and opposite ends enclosing the axis supplying the DC power. The label is made of a single-axis arrangement of heat-shrinkable polymer film sheets in a self-adhesive, hollow manner with an outer and inner surface and sufficient width to enclose the battery casing. Opposite ends, first and second edges parallel to the battery axis, meet at least butt against each other and extend in length to overlap the third and fourth opposite ends of the battery. A layer of opaque, non-conductive, alkali-resistant pigment is applied to the inner surface of the label and held in place by the sheath. A layer of compression-sensitive, non-conductive adhesive is applied to the pigment layer at least along the first and second edges. The compression-sensitive adhesive provides sufficient peel-resistant adhesion to prevent the label from lifting from the battery casing and sufficient bond strength to prevent displacement of the first adhering edge due to the heat shrinkage of the sheath. Used to create a bonding effect around the battery casing.

Claims (38)

1. A single-layer label for enclosing dry-cell batteries, where the battery is enclosed in a casing that runs the entire length of the battery and is defined as an axis, with opposite ends intersecting the axis and enclosing the casing, where the axis provides the DC electrical energy. The label consists of: (a) a transparent, self-adhesive, heat-shrinkable polymer film casing, aligned along the same axis with the outer and inner surfaces facing the battery casing, and a width provided at the opposite ends where the first and second edges are parallel to the battery axis, and a length extending from the opposite ends where the third and fourth edges are normally connected to the battery axis. The width of the casing is sufficient to enclose the battery casing and for the first and second edges to meet at least halfway, and the length of the casing is sufficient for the third and fourth opposite edges to overlap the opposite ends of the battery by heat shrinkage. The casing shrinks in the width direction by approximately 60%; (b) an opaque pigment or color layer consisting of; (c) a non-conductive, alkali-resistant, pressure-sensitive adhesive layer applied to and extending over the pigment layer at least along the first and second edges, where such adhesive has sufficient anti-peeling strength to prevent the applied label from lifting off the battery casing and sufficient shear strength to prevent movement of the first adhesive edge of the casing relative to the second adhesive edge of the casing from thermal shrinkage of the adhesive casing. 2. Single-layer label as specified in Claim 1, where the back covering shrinks by approximately 40 to 50% in the direction along the width of the covering. 3. Single-layer label as defined in Claim 1, where the back cover shrinks by approximately 40 to 45% in the direction along the width of the cover. 4. Single-layer labels as defined in Claim 1, where the backing is made of a polyvinyl chloride film oriented around a single axis and is approximately 1 to approximately 3 mm thick. 5. Single-layer labels as defined in Claim 1, where the covering is made of polyvinyl chloride film arranged around a single axis and is approximately 2 to 2.5 mm thick. 6. Single-layer labels as defined in Claim 5, where the backing is made of a polyvinyl chloride film arranged around a single axis, approximately 1 to 3 mm thick. 7. Single-layer label as defined in Claim 2, in which the backing is made of a polyvinyl chloride film arranged around a single axis, approximately 2 to 2.5 mm thick. 8. Single-layer label as defined in claim 1, whereby the compression-sensitive adhesive is an acrylic-based adhesive with a peel strength of at least approximately 2Pli and a shear strength of at least 4,000 min. 9. Single-layer label as specified in claim 6, whereby the compression-sensitive adhesive is an acrylic-based adhesive with a minimum shear strength of approximately 2Pli and a minimum shear bond strength of approximately 4,000 min. 10. Single-layer labels as defined in claim 1, where the compression-sensitive adhesive is an acrylic-based adhesive with a minimum peel strength of approximately 2 to approximately 5 Pli and a minimum shear strength of approximately 4,000 to 10,000 min. 11. Single-layer labels as defined in Claim 7, where the compression-sensitive adhesive is an acrylic-based adhesive with a peel strength of approximately 2 to approximately 5 Pli and a shear strength of approximately 4,000 to 10,000 min. 12. Single-layer labeling as specified in Claim 1, where compression-sensitive adhesive is extended along the third and fourth edges of the casing. 13. Single-layer labeling as specified in Claim 11, where the compression-sensitive adhesive is extended along the third and fourth edges of the enclosure. 14. Single-layer label as defined in Claim 1, where the entire layer of pigment is encased in a layer of compression-sensitive binder. 15. Single-layer label as defined in Claim 11, where the entire pigment layer is encased in a layer of compression-sensitive binder. 16. A single-layer label for enclosing a dry cell battery, which is a casing that runs the length of the battery and is defined as an axis and opposite ends that bend against the axis and enclose the casing which the axis provides the DC power. The label consists of: (a) a single-axis, transparent, self-adhesive, heat-shrinkable polymer film that is aligned around a single axis and is used as a casing with the outer and inner faces facing the battery casing, approximately 1 to approximately 3 mm thick, and with a width provided at the opposite ends there, and the first and second edges to connect parallel to the battery axis, and a length to extend from the length of the battery and with the opposite ends there, and the third and fourth edges to connect normally to the battery axis. The width of the casing is sufficient to enclose the casing around the battery and for the first and second edges to meet at least around the battery casing, and the length of the casing is sufficient to allow the third and fourth edges to overlap over the opposite ends of the battery by the heat shrinkage of the casing. (a) The casing exhibits thermal shrinkage of up to 60% in the direction of the casing width; (b) An opaque pigment layer consisting of alkali-resistant, non-conductive ink applied to the inner surface of and bonded to the casing shows no change when exposed to 7.2N KOH for 24 hours; and (c) A non-conductive, acrylic-based compression-sensitive adhesive layer extending over the pigment layer at least along the first and second edges, exhibiting a peel-resistant bond strength of at least approximately 0.90 kg/cm² and sufficient to prevent the applied label from lifting from the battery casing and a shear strength of at least approximately 4,000 minutes and sufficient to prevent displacement of the first bonding edge of the casing relative to the second bonding edge of the casing from thermal shrinkage of the bonded casing. 17. Single-layer label as specified in Claim 16, where the covering shrinks by approximately 40 to 50% in the direction along the width of the covering. 18. Single-layer label as defined in claim 16, where the covering is made of a polyvinyl chloride film laid around a single axis, approximately 20 to 2.5 mil thick, and shrinks approximately 40 to 45% in the direction of the width of the covering. 19. Single-layer labels as defined in Claim 16, where the compression-sensitive adhesive has a peel-resistant strength of approximately 2 to approximately 5 Pli. 20. Single-layer labeling as specified in Claim 16, where the compression-sensitive adhesive is extended along the third and fourth edges of the covering. 21. Single-layer label as defined in Claim 16, where a compression-sensitive adhesive layer encloses all parts of the pigment layer. 22. A labeled dry cell battery with a long sheath defined as an axis and opposite ends intersecting the axis and enclosing the casing on which the axis is supplied with the DC electrical energy. Such label consists of: (a) a self-adhesive, heat-shrinkable, transparent polymer film sheath arranged around a single axis, with its outer and inner surfaces facing the battery casing, and its width terminating at the first and second opposite edges parallel to the axis and its length terminating at the third and fourth edges normally connected to the axis. Such first and second edges are held by a compression-sensitive adhesive to the battery casing and meet at least jointly, with each of these first and second edges preventing movement from each other by the heat shrinkage of the sheath around the battery casing, with the third and fourth opposite edges overlapping on top and heat shrinking to the opposite ends of the battery; (b) an opaque layer of alkali-resistant, non-conductive ink applied to the inner surface of the sheath and held by the sheath. (c) a non-conductive, compression-sensitive adhesive layer that adheres the label to the battery casing and is applied to and extends over the pigment layer at least along the first and second edges and extends from the first and second edges to adhere to the battery casing and has sufficient anti-peeling strength to prevent the lifting of the first and second edges from the battery casing and sufficient shear strength to prevent movement of the first edge of the casing relative to the second edge of the casing upon heat shrinkage of the casing. 23. A battery as defined in Claim 22, in which the casing encloses a single axis, which, prior to shrinkage, is able to shrink up to 60% in the direction along the width of the casing. 24. The battery as described in Claim 22, where the casing aligned around a single axis prior to shrinkage, is able to shrink by approximately 40 to approximately 50% in the direction along the width of the casing. 25. A battery as described in Claim 22, in which the casing is made of polyvinyl chloride film arranged around a single axis, approximately 1 to approximately 3 mm thick. 26. A battery as described in Claim 22, in which the casing is made of polyvinyl chloride film arranged around a single axis, approximately 2 to 2.5 mm thick, and shrinks by approximately 40 to 45% in the direction along the width of the casing. 27. A battery as specified in Claim 22 where the compression-sensitive bond has a peel strength of at least approximately 2Pli and a shear strength of at least approximately 4,000 min. 28. Batteries as specified in claim 22, where the compression-sensitive adhesive is an acrylic adhesive with a peel strength of at least 2 to approximately 5 Pli and a shear strength of approximately 4,000 to 10,000 min. 29. The battery as specified in Claim 22, where the compression-sensitive binder is extended along the third and fourth edges of the battery and at least secures such casing at the third and fourth edges to the opposite end of the battery. 30. A battery as specified in Claim 22, in which a compression-sensitive binder layer encloses every portion of the pigment layer, and in which at least the third and fourth such enclosed edges are bonded to the opposite ends of the battery. 31. A battery as defined in Claim 28, in which a compression-sensitive binder layer encloses all parts of the pigment layer. 32. A labeled dry cell battery with a casing that runs the length of the battery and is defined as an axis and opposite ends intersecting the axis, and encloses the casing which the axis provides the electrical energy, DC current. The label consists of: (a) a self-adhesive, transparent, heat-shrinkable polymer film casing that wraps around a single axis, with the outer and inner surfaces facing the battery casing, and the outer surface being approximately 1 to approximately 3 mil thick and the width at opposite ends that terminate at the first and second edges parallel to the axis, and the length that terminates at opposite ends at the third and fourth edges, normally aligned with the battery axis. The label encloses the battery casing with the first and second edges meeting at least in a butt position and adhering to the battery casing by a compression-sensitive adhesive, with the third and fourth opposite edges overlapping on top and heat-shrinking to the opposite ends of the battery. The casing is heat-shrinkable to approximately 60% in the width direction of the casing before the casing shrinks; (b) an opaque pigment layer consisting of (c) A non-conductive, alkali-resistant, acrylic-based compression-sensitive adhesive layer adheres the label to the battery casing and extends over the pigment layer at least along the first and second edges sufficiently to adhere the label at approximately the first and second edges to the battery casing. Such compression-sensitive adhesive has a peel strength of at least approximately 2Pli and is sufficient to prevent the lifting of the applied label edge from the battery casing, and a shear strength of at least approximately 4,000 min and is sufficient to prevent displacement of the first edge of the casing relative to the second edge of the casing from thermal shrinkage of the casing. 33. The battery as described in Claim 32, where the casing aligned around a single axis prior to shrinkage, is able to shrink by up to 40 to approximately 50% in the direction along the width of the casing. 34. The battery as described in Claim 32, where the casing aligned around a single axis prior to shrinkage, is able to shrink by 40 to approximately 45% in the direction along the width of the casing. 35. A battery as described in Claim 34, in which the casing is made of polyvinyl chloride film arranged around a single axis with a thickness of approximately 2 to approximately 2.5 mm. 36. Batteries as specified in claim 32, where the compression-sensitive bond shall be an acrylic bond with a peel strength of at least 2 to approximately 5 Pli and a shear strength of approximately 4,000 to 10,000 min. 37. The battery as specified in Claim 32, whereby a compression-sensitive binder is extended along the third and fourth edges of the battery and at least the said casing at the third and fourth edges is secured to the opposite end of the battery. 38. A battery as defined in claim 32, in which a compression-sensitive binder layer completely encloses all parts of the pigment layer.