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Manufacturing method of products attached with rfid label in a mold

Manufacturing method of products attached with rfid label in a mold description/claims

1. Field of the Invention

This invention relates to a manufacturing method of products attached with an RFID (radio frequency identification device) in a mold, particularly to one having several steps for making a product attached with a substratum label consisting of a substratum and a radio frequency identification device during forming the plastic product in a mold. Then the RFID combined with the label is positioned between the substratum and the plastic product so that the RFID is protected from unnecessarily broken or damaged, with its identifying capacity possible to be always maintained intact.

2. Description of the Prior Art

Nowadays radio frequency identification has widely been used on various goods, in order to escalate the speed of circulation, identification, and filing. At present the chips used for radio frequency identification always have an adhesive film layer glued on the electronic circuit of the chip, and then the adhesive film layer is adhered on a product, and an adhesive layer is further attached on the adhesive film layer for protecting the radio frequency identification device under the film layer from being broken, damaged or worn off.

However, the conventional radio frequency identification system has a flow that it cannot be applied to a wide variety, in other words, it is extremely limited in its applicable scope, with every circuit board necessary to be adhered on with an adhesive layer, so it is not convenient for mass production, increasing manufacturing processes, lowering effectiveness and enhancing its cost.

There are Taiwan patent No. 93127285, China patent NO. 200410078355, and U.S. Pat. No. 6,957,777 B1 disclosed the same “Label to be attached on a plastic product formed in a mold and identifiable by a detective device” wherein a substratum is made of a soft circuit board for arranging thereon a RFID (radio frequency identification device) and an antenna.

This invention has been devised to offer a manufacturing method of products attached with an RFID label in a mold, for protecting the RFID label from broken or worn out so as to keep intact the identifying capacity of the RFID.

The invention has the following features.

1. The first step of the manufacturing method is to prepare a first mold for making a substratum, and the material of the substratum may be the same as or different from that of a plastic product made in this method.

2. The substratum can be a thin film, a very thin plate, a foam thin plate, or a compound plate depending on the necessity of the plastic product.

3. The second step is to combine an RFID label with the substratum, and the RFID label is composed of a radio frequency identification chip, an antenna and an adhesive surface, and adhered on the substratum with the adhesive surface. Or before the RFID is not formed with the glue surface, it is combined with the substratum by means of an adhesive film, high frequency process or supersonic process, making a substratum label containing the substratum and the RFID label and then to be adhered with the plastic product during injecting molding process of the plastic product.

4. The RFID label can be added with a printed layer, which further has a linking layer.

5. The third step of the method is to place the substratum label in a second mold that a plastic product is to be formed, so the RFID label can be wrapped automatically between the substratum and a plastic product during the molding process.

This invention will be better understood by referring to the accompany drawings, wherein:

FIG. 1 is a flow chart of a manufacturing method of products attached with an RFID label in a mold in the present invention;

FIG. 2 is an upper view of a forming device used in a first preferred embodiment of a manufacturing method of products attached with an RFID label in a mold in the present invention;

FIG. 3 is a side view of an substratum and a RFID label used in a second step of the manufacturing method of products attached with an RFID label in a mold in the present invention;

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