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US 12,597,679 B2Granted
Friction enhancing core surface of battery separator roll and related methods
AssigneeAmtek Research International LLC
InventorsRichard W. Pekala, Jennifer Stock
Life of this patent
Estimating the term…
Abstract
Rolls of battery separator material and related methods are disclosed. A roll of battery separator material includes a core including an outside surface, a separator material rolled around the core, and a friction enhancing surface on at least a portion of the outside surface of the core to prevent the separator material from lateral migration relative to the outside surface of the core.
Claims20
A roll of battery separator material, comprising:
- a core including an outside surface, the core comprising a cardboard core or a plastic core;
- a battery separator material separate and distinct from the core that is rolled around the core, the battery separator material configured to be used to separate electrodes of a battery after being unrolled from the core;
- and
- a friction enhancing surface on at least a portion of the outside surface of the core to prevent the battery separator material from lateral movement relative to the outside surface of the core, the friction enhancing surface increasing the frictional resistance of the battery separator material on the core by at least 1.75 times, as compared to a core without the friction enhancing surface, while maintaining sufficient release characteristics of the outside surface of the core, and wherein the friction enhancing surface comprises a friction enhancing material including one or more strips of material separate from the core, the one or more strips of the material attached to the outside surface of the core using at least one of an adhesive, one or more staples, or one or more tacks, the friction enhancing surface being separate and distinct from the battery separator material, wherein the one or more strips of material are attached at an angle of 30° to 60° to the direction the separator material will be pulled when it is unwound from the roll.
1 more element
A roll of battery separator material, comprising:
- a core including an outside surface, the core comprising a cardboard core or a plastic core;
- a battery separator material separate and distinct from the core that is rolled around the core, the battery separator material configured to be used to separate electrodes of a battery after being unrolled from the core;
- and
- a friction enhancing surface completely covering the outside surface of the core to prevent the battery separator material from lateral movement relative to the outside surface of the core, the friction enhancing surface including one or more strips of material separate from and attached to the core using at least one of an adhesive, one or more staples, one or more tacks, one or more nails, or one or more rivets, the friction enhancing surface increasing the frictional resistance of the battery separator material on the core by at least 1.75 times, as compared to a core without the friction enhancing surface, while maintaining sufficient release characteristics of the outside surface of the core, the friction enhancing surface being separate and distinct from the battery separator material, the one or more strips of the material are attached at an angle of 30° to 60° to the direction the separator material will be pulled when it is unwound from the roll.
1 more element
Dependencies are inferred from the claim text.