Plastic cap with ic tag and method of attaching ic tag to the cap
AssigneesJapan Crown Cork Co., Ltd., Toyo Seikan Kaisha, Ltd.
InventorsTakahiro KUROSAWA, Takayuki KIKUCHI, Kazuo TANABE, Katsumi HASHIMOTO
Life of this patent
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Abstract
A plastic cap with IC tag storing product information provided on the upper surface of a top plate. The top plate is formed by an annular flange and a recessed portion 37, the recessed portion, including a side wall continuous to the inner circumferential edge of the annular flange and a bottom continuous to the lower end of the side wall. The tag 10 is attached to the annular flange to cover the recessed portion. A gap between the tag and the bottom is maintained to such a degree that the transmission and reception of signals to and from the tag are not interrupted when the back surface of the bottom comes in contact with water.
Claims10
A method of attaching an IC tag to a plastic cap, comprising:
- preparing an IC tag web in which a plurality of IC units of a combination of IC chips and metal antennas are arranged and fixed on one surface of a first thermoplastic resin substrate sheet, a second thermoplastic resin substrate sheet, and a plastic cap having a top plate and a skirt wall hanging down from a circumferential edge portion of the top plate;
- preparing a laminated sheet in which said IC tag web is laminated on a surface of the second thermoplastic resin substrate sheet by heat-adhering the first thermoplastic resin substrate sheet of said IC tag web and the second thermoplastic resin substrate sheet together in a manner that said IC units are positioned on an outer surface side;
- punching said laminated sheet in a disk shape successively for each of the IC units fixed thereto to thereby successively form tag pieces of the disk shape having the second thermoplastic resin substrate adhered to the IC tag in which one IC unit is fixed to the first thermoplastic resin substrate, and successively fitting and false-fixing the punched tag pieces onto the upper surfaces of the top plates of the caps in a manner that the second thermoplastic resin substrate is on the outer surface side simultaneously with the punching;
- and
- fixing said IC tag onto the top plate of the cap via the second thermoplastic resin substrate in an integral form by heat-melt-adhering the second thermoplastic resin substrate onto the upper surface of the top plate of the cap.
Dependencies are inferred from the claim text.