JP2000202927A - Manufacture of label for monitoring article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively arrange a soft magnetic body on a tape base material for realizing miniaturized labels in response to the size of the label in the manufacturing method of labels for monitoring articles using an amorphous metal material. SOLUTION: A soft magnetic body 1 is fed to a cutting position so as to be cut in required lengths so as to be intermittently stuck onto a first tape base material 8 under running in order to be pasted to a second tape base material, on which an amorphous metal material 11 is intermittently stuck so as to be punched to the predetermined size for manufacturing labels for monitoring articles. In this case, the feeding of the soft magnetic body 1 to its cutting position is performed at a feeding speed slower than the running speed of the first tape base material 8 by means of a conveying roller 3 having a regular polygonal crosssection and under the periodical changing of a period requiring for one cutting.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article surveillance label using an amorphous metal material for use in a system for preventing theft of goods, articles, books and the like in retail stores, large stores and public facilities. (Hereinafter referred to as a label).

[0002]

2. Description of the Related Art It is said that the number of damages from public facilities such as large stores such as department stores and supermarkets and libraries without permission is increasing year by year. In order to prevent unauthorized removal, that is, in order to prevent theft, in recent years, a label using a magnetic material has been attached to an item, and when the item passes through the detection area, a magnetic field is generated by the magnetic material of the label. A magnetic system that causes a change and detects this magnetic field change is employed.

As a magnetic substance held in a label used in this magnetic system, an amorphous metal material has recently been used for the purpose of improving the sensitivity and reliability of the system. As disclosed in Japanese Unexamined Patent Publication No. 61-153799, an amorphous metal thin wire has attracted attention.

Further, in order to enable a smaller label for monitoring articles, a structure in which a soft magnetic material is combined with an amorphous metal material for pulse generation is disclosed in Japanese Patent Laid-Open No. 4-19538.
No. 4 has been proposed and has been put to practical use as a small, high-performance label for monitoring articles.

[0005]

SUMMARY OF THE INVENTION The above-mentioned Japanese Patent Application Laid-Open No. 4-19 / 1992.
The label proposed in Japanese Patent No. 5384 has a structure in which a soft magnetic material having a small coercive force is arranged at both ends of an amorphous metal material. And, even for labels having such a complicated structure, development of an excellent manufacturing method has been desired.

However, in the case of a small label in which soft magnetic materials are arranged at both ends of the amorphous metal material, it is necessary to finely adjust the arrangement of the pulse-generating magnetic material and the soft magnetic material. It has been found that the label manufacturing method disclosed in Japanese Patent Application Laid-Open No. 3-250299 is insufficient. That is, JP-A-3-250299
According to the manufacturing method disclosed in Japanese Patent Application Laid-Open No. H10-157, it has been found that a soft magnetic body having a narrow gap between labels cannot be produced in a continuous label body because the soft magnetic bodies can be arranged only at certain intervals. In addition, it has been found that since the label interval is inevitably widened, secondary materials such as tapes used are increased, and there is an insufficient point that a low-cost label continuous body cannot be supplied.

In view of this situation, the present invention provides an arrangement of an amorphous metal material for a magnetic material for pulse generation, especially a small label in which an amorphous metal thin wire and a soft magnetic material are combined at both ends thereof. It is an object of the present invention to provide a label manufacturing method that can be performed effectively.

[0008]

According to the present invention, a soft magnetic material is supplied to a cutting position, cut into a required length, and is intermittently adhered to a running first tape base material. When the second tape base material to which the amorphous metal material is intermittently adhered is attached and cut out to a predetermined size to produce an article monitoring label, the supply of the soft magnetic material to the cutting position is performed in a cross section. An article monitoring method using a regular polygonal conveying roller, wherein the supply speed is lower than the traveling speed of the first tape base material, and the feeding is performed while periodically varying the time period required for one cutting. The gist is a method for producing a label.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail.

[0010] The soft magnetic material used in the present invention is a material which changes the magnetic properties of an amorphous metal material having a short length,
This is essential to ensure that no signal is suitable for the label. In the present invention, a magnetic material having a coercive force smaller than that of an amorphous metal material is referred to as a soft magnetic material. Usually, a magnetic material having a coercive force of 0.5 Oe or less is used. Regarding the arrangement of the soft magnetic material, it is desirable from the standpoint of improving characteristics that the end of the amorphous metal material be as close to the center (center in the longitudinal direction) of the soft magnetic material as possible.

In the present invention, first, a long soft magnetic material is cut to a required length. As shown in FIG. 1, first, the soft magnetic material 1 is divided into guide rollers 2 and 2 and a transport roller disposed between them. And supply it to the cutting device. The supply speed of the soft magnetic material is determined by the rotational surface speed of the transport roller 3. Since the transport roller 3 has a regular polygonal cross section, the rotational surface speed periodically fluctuates. The body 1 is supplied to the cutting device while the supply speed varies. The term “periodically fluctuating” means that the supply speed of the soft magnetic material 1 fluctuates in a constant time cycle, and particularly in a state where the speed fluctuates alternately in a constant time cycle. Desirably. This period is a period of time required for one cutting. Regarding the supply speed, various speed patterns can be used according to the purpose of use.
% Speed is preferred.

The conveying roller having a regular polygonal cross section used in the present invention preferably has a regular trigonal to dodecagonal shape, one side of which is preferably 5 to 100 cm. The cross-sectional diameter of the guide rollers 2 is desirably 3 to 50 cm. Guide rollers 2 with respect to regular polygonal conveying rollers 3
The position 2 is adjusted so that the soft magnetic body 1 is pressed against the transport roller 3. Here, in the present invention, the degree of pressure contact between the soft magnetic material and the transport roller is adjusted so that the end of the amorphous metal material is substantially at the center (center in the longitudinal direction) of the soft magnetic material in the label. desirable.

As the cutting device for the soft magnetic body 1, various cutting devices can be used. For example, as shown in FIG. 1, a plurality of blades are provided on the circumference so as to protrude at intervals. It is possible to use a cutting device in which the attached roller 5 and the anvil roller 4 in which the magnet 7 is buried at the same interval on the circumference are rotatably abutted. The intervals between the plurality of blades of the bladed roller 5 and the magnets 7 of the anvil roller 4 are usually equal, but may be changed.

By contacting and rotating the blade of the bladed roller 5 and the surface of the anvil roller 4 in the vicinity of the magnet 7, the soft magnetic body 1 is rotated by the rotating blade of the bladed roller 5 and the anvil roller 4. At the same time as being cut by contact with the surface, the cut piece 6 of the soft magnetic material 1 is gripped by the magnet 7 on the anvil roller 4 and moves with the rotation of the roller 4. The surface speed by the rotation of the anvil roller 4 is set to be higher than the supply speed of the soft magnetic material 1, so that the cut pieces 6 of the soft magnetic material 1 are magnetized on the surface of the anvil roller 4 at a desired interval. At 7, they are held and arranged. The cut piece of the soft magnetic material may be transported not only by the anvil roller 4 but also by transport means such as a transport belt. At this time, it is desirable that the transport speed of the cut piece of the soft magnetic material is the same as the traveling speed of the first tape base material 8.

The length a of the cut piece of the soft magnetic material 1 is determined by the product of the supply speed of the soft magnetic material and the time required for one cut. The supply speed of the soft magnetic material and the required time for one cut are kept constant. However, even when the supply speed of the soft magnetic material is periodically changed, if it is necessary to keep the cut piece length a constant, 1 The interval between the blades or the rotation speed of the bladed roller 5 can be set so that the required time for the cut varies correspondingly.

Next, the arrangement interval b of the cut pieces of the soft magnetic material 1 is determined by the product of the traveling speed of the first tape base material 8 and the time required for one cut. Here, the time required for one cut is the time required from the end of one cut to the next cut, that is, the cutting blade of the bladed roller 5 moves away from the cutting position and the next cutting blade moves to the cutting position. It is time to reach. The interval (ba and c) between the cut pieces of the soft magnetic material 1 is [((the traveling speed of the first tape base material) − (the supply speed of the soft magnetic material)]] and the time required for one cut. It will be determined by the product.

In order to keep the interval (ba) between the cut pieces of the soft magnetic material 1 between different labels constant, it is usually achieved by keeping the above conditions constant.
Even when either of them is changed, it is possible to make the other conditions constant by changing other conditions. In determining these conditions, usually, the surface speed of the anvil roller 4, the length of the interval between the cutting blades, and the rotation speed of the roller with a cutting blade are first determined. Is determined to be The interval (ba) between the cut pieces of the soft magnetic material is not always equal, and when it is necessary to change the desired value, the supply of the soft magnetic material 1 which is determined last is usually performed. It is often determined by varying the speed, but is not limited to this.

The interval (c) of the cut pieces of the soft magnetic material between the labels is set so that it is not difficult to cut the labels to be performed later and an appropriate interval that does not result in an unnecessary length. Although the interval is often different from the interval (ba) between the pieces, it is usually determined by changing the supply speed of the soft magnetic material 1 which is finally determined. In order to adjust the interval (c) between the cut pieces of the soft magnetic material while keeping the cut piece length a of the soft magnetic material 1 constant, the supply speed of the soft magnetic material 1 is changed and the cut amount for one cut is adjusted. It can be adjusted by setting the interval between the blades or the rotation speed of the bladed roller 5 so that the required time varies correspondingly.

Since the variation cycle of the supply speed of the soft magnetic material 1 is the cycle at which one piece of the soft magnetic material 1 is cut, the interval (ba) between the cut pieces of the soft magnetic material and the soft The interval (c) between the cut pieces of the magnetic material can be made unequal, and the interval is determined by adjusting the amount of change in the supply speed of the soft magnetic material 1. In addition,
The interval (ba) between the cut pieces of the soft magnetic material and the interval (c) of the cut pieces of the soft magnetic material can be made equal by adjusting the amount of fluctuation of the supply speed of the soft magnetic material 1. .

When the above conditions are determined, the sum of the length (a) of the cut pieces 6 and the interval (ba) of the cut pieces is calculated as follows.
It is important that the cut piece of the soft magnetic body 1 is securely held by the magnet by adjusting the length of the magnet on the surface of the anvil roller 4 to be equal to the sum of the gap between the magnets.

Next, the first tape base material 8 coated with the adhesive 21 on one side is supplied to the place where the cut pieces 6 of the soft magnetic material of the anvil roller 4 are arranged, and pressed against the anvil roller 4 by the nip roller 9. Thereby, the cut piece 6 of the soft magnetic material on the anvil roller 4 is stuck on the adhesive layer of the first tape base 8. The supply speed of the first tape base material 8 is preferably set to a speed equal to the surface speed of the anvil roller 4. The traveling speed of the first tape base material 8 is
Naturally, since the speed is higher than the supply speed of the soft magnetic material 1, the tape 10 in which the soft magnetic material pieces 6 are arranged at intervals on the first tape base material 8 is obtained. The obtained tape 10 is peeled off from the anvil roller 4.

On the other hand, similarly to the soft magnetic material 1, the amorphous metal fine wire 11
7 and is pressed and adhered to a side different from the release paper side of the second tape base material 12 having the release paper 23 bonded on one side by a nip roller, and the amorphous metal fine wire 1 is cut.
A tape 13 in which 1 are arranged at intervals is obtained, and is separated from the anvil roller 17. The above-described tape 10 and tape 13 are laminated and attached to each other to obtain a laminate as shown in FIG.

Subsequently, the laminate is supplied to a label cutting device 14, and a cut line having a label shape shown in FIG. 3 is made in the laminate, and then the laminate is passed through a counter 14. Unnecessary upper and lower tape base portions other than the labels of the laminate having passed through the counter 14 are peeled off from the release paper 23 by the scraping roller 18 and wound, while the release paper 23 on which the label-shaped laminate remains at intervals. Is taken up by the take-up roller 19. Note that the label manufacturing method according to the present invention can be easily performed by providing a mechanism for periodically changing and supplying a soft magnetic material to a cutting position in each of the series even when the method includes a plurality of parallel manufacturing series. It is feasible.

[0024]

The present invention will be described below in more detail with reference to examples. Example 1 An amorphous metal fine wire having a wire diameter of 125 μm (alloy composition: Fe) was placed between two 25 μm-thick polyethylene terephthalate (PET) films coated with an acrylic adhesive.
A label as shown in FIG. 3 is sandwiched between _77.5 Si _7.5 B ₁₅ , a suffix being atomic%) and a soft magnetic ribbon (Metglass 2705M Allied) having a thickness of 50 μm and a width of 2.5 mm. Produced in this way.

As the transport roller 3 for supplying the soft magnetic ribbon, a roller having a regular hexagonal cross section of 30 mm on a side was used. Then, guide rollers 2 having a cross-sectional diameter of 40 mm
The positional relationship between the transport roller and the guide roller was adjusted such that the soft magnetic ribbon advanced 10 mm while the anvil roller surface advanced 19.5 mm. Thus, while changing the supply speed of the soft magnetic ribbon, the soft magnetic ribbon was supplied to the anvil roller and cut by the rotating blade of the bladed roller to obtain a cut piece. Note that, here, the positional relationship between the guide roller 2 and the transport roller 3 is such that the guide rollers are arranged at symmetrical positions as shown in FIG. If the rotation axis of the transport roller is the origin, the rotation axis of the guide roller is arranged at a position represented by the coordinates (x, y) = (90, 50) and (−90, 50). In this way, it is easy to periodically change the supply amount of the soft magnetic material and feed it out by simply adjusting the geometric shapes and arrangements of the conveying roller and the guide roller, and without requiring a complicated control device. Could be done.

The diameter of the anvil roller is 93 mmφ,
Length on circumference (length on circumference) 2.5mm (5m depth)
m) 15 magnets were arranged at equal intervals. The diameter of the bladed roller was 62 mmφ, and ten superhard cutting blades were arranged on the circumference at equal intervals. In addition, the rotation speed of the bladed roller was controlled in conjunction with the change in the supply speed of the soft magnetic material, so that a cut piece of the soft magnetic material having a fixed length was obtained.

The first tape substrate is made of PET having a thickness of 25 μm.
Using a film, an acrylic adhesive (PET-1)
Mold, manufactured by FSK Co., Ltd.) with a thickness of 25 μm was used as a tape, and the second tape base material was 20 μm
Acrylic adhesive (type JHL-2359, manufactured by Nippon Fuller Co., Ltd.) is applied on one side of the polypropylene film at a thickness of 25 μm, and the other side has a thickness of 70 μm.
A sheet obtained by sticking m-siliconized paper as release paper was used as a help.

After the obtained soft magnetic thin strip is attracted by the magnet on the anvil roller and moved with the rotation of the roller, the first tape base material supplied at the same speed as the peripheral speed of the anvil roller is used. The tape was adhered by being pressed onto the pressure-sensitive adhesive layer to obtain a tape having soft magnetic ribbon pieces arranged at regular intervals. Next, on the adhesive layer side of this tape, a tape composed of an amorphous metal thin wire, a second tape base material, and a release paper was laminated and bonded. The obtained laminate was immediately introduced into a label cutting device and formed into a label. The running speed of the tape was 30 m / min.

The obtained label is as shown in FIGS. 3 and 4 and has a label length (L) of 45 mm, a cut piece (a) of the soft magnetic ribbon of 10 mm, and the same label. Labels in which the interval (b) between the cut pieces in the sample was 30 mm and the interval (c) between the cut pieces between different labels was 40 mm could be continuously and stably manufactured.

[0030]

According to the label manufacturing method of the present invention, a soft magnetic material of a required length can be arranged at a desired interval in a label together with an amorphous metal material. Therefore, an article monitoring label composed of an amorphous metal material and a soft magnetic material and having excellent properties can be easily and economically manufactured without requiring a complicated apparatus.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing an example of a method for manufacturing an article monitoring label of the present invention.

FIG. 2 is an explanatory diagram showing an example of a supply unit for feeding a soft magnetic material to a cutting position according to the present invention.

FIG. 3 is an explanatory view showing an example of an article monitoring label manufactured according to the present invention.

FIG. 4 is an explanatory view showing an example of a cross-sectional structure of an article monitoring label manufactured according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Soft magnetic body 2 Guide roller 3 Conveying roller 4, 17 Anvil roller 5, 16 Bladed roller 6 Cut piece of soft magnetic body 7 Magnet 8 First tape base material 9 Nip roller 10, 13 Tape 11 Amorphous metal thin wire 12th 2 Tape base material 14 Cutting device 15 Counter 18 Flattening roller 19 Winding roller 21, 22 Adhesive 23 Release paper

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3E075 BA83 CA02 DA03 DA04 DA05 DA14 DA20 DA33 DB02 DB14 DB16 DB32 DD02 DD33 GA01 GA02 GA04 5B035 AA00 AA04 BA03 BA05 BB02 BC00 CA01 CA08 CA22

Claims (1)

[Claims] 1. A soft magnetic material is supplied to a cutting position, cut to a required length, and is intermittently adhered to a running first tape base material, and an amorphous metal material is intermittently adhered thereto. When manufacturing the label for article monitoring by laminating the second tape base material adhered to and cutting out to a predetermined size, the supply of the soft magnetic material to the cutting position is performed by using a conveyance roller having a regular polygonal cross section. The supply speed is lower than the running speed of the first tape base material, and the supply speed is changed while periodically changing the time required for one cutting.