Abstract:
The present disclosure relates to the implanting of RFID (radio frequency identification) chips into the slider of a zipper of a reclosable package. This allows for subsequent reading of the RFID identifying data to identify associated with the reclosable package. This can be done by using the RFID data directly or by using the RFID data to access a database This can be done for authentication, security, quality control, inventory control and similar purposes.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to RFID (radio frequency identification) and similar methods in the manufacture of reclosable packages. In particular, the present invention relates to the implanting of RFID chips into the slider of a reclosable package for various purposes, including, but not limited to, security, authentication and inventory tracking. 
     2. Description of the Prior Art 
     The technology behind RFID tags is well-developed. Notably, this technology has resulted in further miniaturization of RFID tags, such as the Mu (μ)-chip by Hitachi. 
     When excited, RFID tags produce a magnetic or electric field which is modulated with an identifying code. In smaller RFID tags, passive technology is used to eliminate the need for a battery or other power supply source in the tag. Such a passive RFID tag requires external excitation in order for a reader to sense the RFID tag. 
     Various manufacturing or similar tracking applications using RFID technology are disclosed in U.S. Pat. No. 7,005,965, entitled “Radio Frequency Identification Device” issued on Feb. 26, 2006 to Chen; U.S. Pat. No. 6,591,227 entitled “Tooling Tracking System for Sheet Fed and Web Fed Presses Using Radio Frequency Identification” issued on Jul. 8, 2003 to Koehler; U.S. Pat. No. 6,265,977 entitled “Radio Frequency Tag Apparatus and Related Method”, issued on Jul. 24, 2001 to Vega; and U.S. Pat. No. 6,232,870 entitled “Applications for Radio Frequency Identification Systems” issued On May 15, 2001 to Garber, the contents of all of which are hereby incorporated by reference. 
     However, further developments are sought in the use of RFID tags in the field of reclosable packages, particularly, but not limited to security, authentication and inventory tracking. 
     OBJECTS AND SUMMARY OF THE INVENTION 
     It is therefore an object of the present invention to use RFID to improve the manufacturing processes, security, authentication and inventory tracking associated with reclosable packages. 
     This and other objects are attained by providing a slider for a reclosable package, with an RFID chip embedded or molded or attached thereto. The identifying data can be downloaded into the RFID chip at the time the chip is being manufactured, at the time when the package is manufactured or when the packing is being or has been filled. The identifying data of the RFID chip can be used directly to include various data regarding the reclosable package and its contents. Alternatively, a database is compiled associating the RFID identifying data with the contents and other characteristics of the reclosable package, such as its contents. The RFID chip is subsequently read at a remote time and place in order either to use the data directly or to access the database and obtain data relating to the reclosable package. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Further objects and advantages of the invention will become apparent from the following description and from the accompanying drawings, wherein: 
         FIG. 1  is a front plan view, partly in phantom, of a reclosable package, including a slider zipper wherein an RFID tag is inserted into the slider, pursuant to the present invention. Additionally, a location for the RFID tag in an alternative embodiment is illustrated. 
         FIG. 2  is a perspective view of a reader interrogating the RFID tag in the slider of the reclosable package of  FIG. 1 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Referring now to the drawings in detail, wherein like numerals indicate like elements throughout the several views, one sees that  FIG. 1  is a plan view of a reclosable package  10  of the present invention. Reclosable package  10  includes a front polymer web panel  12  co-extensive with a rear polymer web panel  14 , sealed together at side seals  16 ,  18  with a bottom seal  20  so as to form mouth  21 . Zipper  22  makes mouth  21  reclosable. As well known to those skilled in the art, zipper  22  would have first and second interlocking zipper profiles  23 ,  25 . As further known in the prior art, slider  24  when moved in a first direction would open the zipper  22  by causing the profiles  23 ,  25  to separate and when moved in a second direction would close zipper  22  by causing the profiles  23 ,  25  to interlock. 
     One of seals  16 ,  18  or  20  could be replaced by a fold in some embodiments. Indeed, it is envisioned that the present invention could be used with many embodiments of reclosable packages with slider zippers. 
     Slider  24  includes RFID chip  100  (or similar “smart” technology) which can be embedded, molded-in, or attached to the outside thereof. Additionally, in some embodiments, the RFID chip  100  can be attached to different parts of the package  10 , such as zipper profiles  23 ,  25  or web panels  12 ,  14 . In order to avoid the need for an internal power supply, RFID chip  100  is typically a passive RFID chip. A typical RFID chip well suited for this application is the Mu (μ)-chip by Hitachi. RFID chip  100  can be incorporated by “pick and place” components in line after the extrusion process with adhesive polymers. Likewise, RFID chip  100  can be embedded, or otherwise attached or molded or attached to slider clips with adhesive or molded into the clip during injection molding. 
     RFID chip  100 ′ illustrates an alternative location for the RFID chip, wherein the RFID chip is attached to the profile or web of the reclosable package  10  in lieu of being attached to the slider  24  as illustrated in the location of RFID chip  100 . 
     The identifying data can be downloaded into RFID chip  100  at the time the chip  100  is being manufactured, at the time when reclosable package  10  is manufactured or when the package  10  is being or has been filled. 
     This identifying data can be similar to a serial number which is then associated with the desired data in a database. Alternatively, the identifying data can directly include the desired data. The desired data includes manufacturing data specific to the reclosable package or the contents thereof (e.g., SKU number, part number, inventory control number, unit count, weight, pricing, manufacturer, country of origin, manufacturing date and time, manufacturing place, and any of numerous possible data regarding the contents, such as, but not limited to, the expiration date of the foodstuff contents, etc.). 
     The RFID chip  100  allows the identifying data of the RFID chip  100  to be associated with a specific reclosable package  10 . Additionally, this association can be less precise, such as to a given lot of reclosable packages  10  (that is, a plurality of packages  10  can have RFID chips  100  with the same data). 
     As shown in  FIG. 2 , reader  200  reads identifying data from the RFID chip  100  and sends the data to computer system  300 . This reading is done at a time and place remote from the original manufacturing time so that the RFID identifying data can either be used directly (with computer system  300  used to interpret the format of the data) or used to access a database as input via port  301  (or storage device) in computer system  300 . 
     This allows specific reclosable packages  10  to be tracked thereby allowing for improved manufacturing processes (that is, a defective reclosable package can be immediately tracked to a specific manufacturing time and place), authentication (that is, the expected contents of a reclosable package can be verified), security (that is, counterfeiting of products becomes more difficult with the present invention) and inventory tracking (that is, a reader can read the RFID chips of reclosable packages at a given location and receive an inventory based on the data from the RFID chips). 
     Additional applications include the prevention of theft and pilferage (related to inventory control), the use of temperature sensitive materials to track acceptable storage conditions, and audio chips for advertising and promotion, instructional and tamper evident purposes. Additionally, an audio chip could include information for the product contents, such as a recipe. 
     Thus the several aforementioned objects and advantages are most effectively attained. Although preferred embodiments of the invention have been disclosed and described in detail herein, it should be understood that this invention is in no sense limited thereby and its scope is to be determined by that of the appended claims.