JPH0684675U - Roll separator for storage battery - Google Patents

Abstract

(57) [Summary] [Structure] In a roll-shaped separator for a storage battery, wherein one end of a separator 11 is attached and fixed to a core 10 via a double-sided adhesive tape 12, and the separator 11 is wound and held. It is characterized in that the adhesive force of the tape 12 is larger on the winding core side surface 12b than on the separator side surface 12a. [Effect] The separator can be rewound from the core without the double-sided adhesive tape peeling from the core and adhering to the separator.
Therefore, the double-sided adhesive tape does not deteriorate the workability of assembling the battery due to the sticking of the double-sided adhesive tape to the battery assembling device, and the roll-shaped separator for a storage battery having excellent workability of assembling the battery can be obtained.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a roll-shaped separator for a storage battery, and relates to a roll-shaped separator for a storage battery that is used for manufacturing an electrode plate group while unwinding the separator held by a winding core when manufacturing the storage battery. is there.

[0002]

[Prior art]

 As shown in FIG. 2, the conventional roll-type separator for a storage battery is configured such that one end of a separator 3 is attached and fixed to a paper-made tubular core 1 via a double-sided adhesive tape 2, and the separator 3 is attached to the core 1. I try to hold it around.

[0003]

[Problems to be solved by the device]

 The roll-shaped separator for a storage battery is used while being unwound in the battery assembling process. Since the separator 3 has better adhesiveness with the double-sided adhesive tape 2 than the core 1, the double-sided adhesive tape is used during the battery assembling work. 2 adheres to the separator 3 and is peeled off from the core 1, and the double-sided adhesive tape 2 adheres to the battery assembling device, which deteriorates the workability of assembling the battery. Therefore, the present invention aims to provide a roll-shaped separator for a storage battery, which can rewind the separator 3 without the double-sided adhesive tape 2 being peeled off from the winding core 1 and without the double-sided adhesive tape 2 being attached. And

[0004]

[Means for Solving the Problems]

 In order to achieve such an object, the roll-type separator for a storage battery of the present invention comprises a roll-type separator for a storage battery in which one end of the separator is attached and fixed to a winding core with a double-sided adhesive tape and the separator is wound and held. In the above, the adhesive force of the double-sided adhesive tape is larger on the side surface of the winding core than on the side surface of the separator. In this case, it is preferable that the adhesive force of the side surface of the core is 1.5 times or more when the adhesive force of the side surface of the separator is 1 as the adhesive force of the double-sided adhesive tape.

As the double-sided pressure-sensitive adhesive tape, a material such as a non-woven fabric, a Japanese paper, a cloth, a synthetic resin film, a foaming resin or the like coated with a pressure-sensitive adhesive such as an acrylic or rubber adhesive on both sides can be used. Incidentally, it may be a so-called non-carrier type double-sided adhesive tape which does not use a base material. In order to obtain a double-sided adhesive tape having different adhesive strengths on both sides, adhesive materials having different adhesive strengths may be used to provide different adhesive strengths, or adhesive materials having the same adhesive strength may be used. The materials may be subjected to surface activation treatment such as corona discharge treatment to provide a difference in adhesive strength.

[0006]

[Action]

 In the roll-shaped separator for storage battery of the present invention, the adhesive strength of the double-sided adhesive tape on the side surface of the core is larger than that on the side surface of the separator, so that the separator has better adhesiveness to the double-sided adhesive tape than the core. However, the separator can be rewound from the core without the double-sided adhesive tape peeling off from the core and adhering to the separator. Therefore, the double-sided adhesive tape does not adhere to the battery assembling device and the workability of assembling the battery is not deteriorated.

[0007]

【Example】

 Next, an embodiment of the roll separator for a storage battery according to the present invention will be described with reference to the drawings. (Example 1) Reference numeral 10 in the drawing is a core made of a Langston roll paper tube, the surface of which is treated with resin to provide surface smoothness. Further, in the figure, 11 is a polyethylene film separator having a microporous surface and ribs formed by the melt extrusion method, and a paper-made separator which does not peel off in a layered form was used. Then, one end of the separator 11 is attached and fixed to the core 10 via the double-sided adhesive tape 12, and the separator 11 is wound and held. The adhesive force of the double-sided adhesive tape 12 is the side surface of the separator. The adhesive force of 12a was 500 g / 20 mm width, and the adhesive force of the core side surface 12b was 750 g / 20 mm width. The adhesive strength of the double-sided pressure-sensitive adhesive tape was measured according to JIS Z 0237 under the conditions of a peeling speed of 300 mm / min and a peeling direction of 180 degrees on a SUS430BA plate at a room temperature of 23 ° C. and a humidity of 60%. It is the value. When the storage battery roll separator thus constructed was used to actually assemble the storage battery, no separation of the separator from the winding core was observed.

Example 2 A storage battery was prepared in the same manner as in Example 1 except that a double-sided adhesive tape having a side surface of the separator having an adhesive force of 500 g / 20 mm width and a side surface of the core having an adhesive force of 850 g / 20 mm width was used. A roll-shaped separator for use was prepared. When the storage battery roll separator thus constructed was used to actually assemble the storage battery, no peeling of the separator from the winding core was observed, as in Example 1.

Example 3 A storage battery was prepared in the same manner as in Example 1 except that a double-sided adhesive tape having a side surface of the separator having an adhesive force of 500 g / 20 mm width and a side surface of the core having an adhesive force of 1000 g / 20 mm width was used. A roll-shaped separator for use was prepared. When the roll-shaped separator for a storage battery thus configured was used to actually assemble a storage battery, no peeling of the separator from the winding core was observed, as in Examples 1 and 2. In the first to third embodiments, the ribbed surface of the separator is attached to the double-sided adhesive tape side, but the flat surface without ribs is attached to the double-sided adhesive tape side. Also obtained similar results.

(Comparative Example) A battery roll was prepared in the same manner as in Example 1 except that a double-sided adhesive tape having a side surface of the separator having an adhesive force of 500 g / 20 mm and a side surface of the core having an adhesive force of 500 g / 20 mm was used. Shaped separator. When the storage battery roll separator thus constructed was used to actually assemble the storage battery, the separator was inevitably peeled off from the winding core.

[0011]

[Effect of device]

 In the roll-shaped separator for storage battery of the present invention, the adhesive strength of the double-sided adhesive tape on the side surface of the core is larger than that on the side surface of the separator, so that the separator has better adhesiveness to the double-sided adhesive tape than the core. However, the separator can be rewound from the core without the double-sided adhesive tape peeling off from the core and adhering to the separator. Therefore, the double-sided adhesive tape does not deteriorate the workability of assembling the battery due to the adhesion of the double-sided adhesive tape to the battery assembling device, and the roll-shaped separator for a storage battery having excellent workability of assembling the battery can be obtained.

[Brief description of drawings]

FIG. 1 is a front view of an embodiment of a roll separator for a storage battery according to the present invention.

FIG. 2 is a front view of a conventional roll-shaped separator for a storage battery.

[Explanation of symbols]

 10 winding core 11 separator 12 double-sided adhesive tape 12a separator side surface 12b winding core side surface

Claims (2)

[Scope of utility model registration request] 1. A roll-shaped separator for a storage battery, wherein one end of a separator is attached and fixed to a winding core via a double-sided adhesive tape, and the separator is wound and held. Also, a roll-shaped separator for a storage battery, characterized in that the side surface of the winding core is made larger. 2. The storage battery according to claim 1, wherein the adhesive force on the side surface of the winding core is 1.5 times or more when the adhesive force on the side surface of the separator is 1 as the adhesive force of the double-sided adhesive tape. Roll separator.