JPH081010U - Film package with improved openability - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a film package having improved openability. SOLUTION: In a film packaging body, in which a sealing band formed by stacking films is provided with a bonding position where overlapping films are bonded to each other and a weak bonding position where peeling is easy, the sealing band is formed along the entire width of the seal and the sealing band. And an unsealing portion that extends over a predetermined length and is entirely formed of weakly bonded portions, and a sealing portion that is provided after the unsealed portion and that appropriately distributes the bonded portions and the weakly bonded portions.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a film packaging body having an improved opening property.

[0002]

[Prior art]

 Conventionally, when transporting or storing products, in order to protect their value and condition, they are packed using appropriate materials and containers. Generally, a film package is thin and strong, and it is convenient to make the film transparent so that the inside can be seen through. Further, if the unsealing tape is wrapped around the inner surface of the package and attached, and one end thereof is pulled to break and remove the film, the unsealing property is improved. Therefore, in various cases such as a tape cassette storage box for audio and video, a cigarette box, a caramel box, etc., a film is used for the exterior of the case to carry out caramel packaging. Caramel packaging is as shown in Fig. 5, in which a single film 10 of polypropylene (PP) or the like is wrapped around the outside of the case, folded according to the outer shape of the case, and the overlapping portion 12 is heat-welded together in a strip shape. It is a package which is adhered and sealed by. Usually, the unsealing tape 14 is arranged near the one end of the package, orthogonal to the seal band 12. The positions of the seal band and the unsealing tape can be changed appropriately. At the time of opening, one end of the opening tape 14 is pulled from the cut edge 16 to break the film 10, one end 18 of the package is removed in the direction of the arrow as shown in FIG. 6, and the remaining main part 20 is also removed from the case 22.

[0003]

[Problems to be solved by the device]

 However, in cases such as tape cassette storage boxes, after the caramel wrapping is performed, the film is further heat-shrinked and the whole is brought into close contact with the case to improve the appearance. For this reason, even if the one end 18 of the package is removed, the main portion 20 has a large adhesive force, and therefore it may not be easily removed from the case 22. If the opening tape is applied near the center of the package, only the opening tape may be removed, and parts of the package on both sides may not be removed. In such cases, a knife is used to make a cutting line on the film, and a finger is put there to tear the film. Therefore, there is a problem that the workability is poor because the unsealing property is poor and it takes time to take out the product.

Therefore, as shown in FIG. 7, the seal band 24 is provided with a bonding portion (white portion) 26 where the overlapping films are bonded to each other and a weak bonding portion (black portion) 28 where peeling is easy. I have tried. However, the sealing band 24 has a wide range in the vicinity of the intersection 32 with the unsealing tape 30 and in the vicinity of the end of the sealing band 24 reaching one end of the surface where the intersection 32 of the sealing band 24 following the intersection 32 is provided. Are all the adhesion points 26, and the weak adhesion points 28 are offset to only one side along the longitudinal direction of the seal band 24. Further, as shown in FIG. 8, at the cut end 34, both sides are cut along the unsealing tape 30 up to the inside of the seal band 24. Therefore, if one end of the unsealing tape 30 is pulled from the cut end 34 to break the film, only the unsealing tape 30 can be easily removed as shown in FIG. 9, and the main part 36 of the package may still not be removed. After all, a knife or the like will be used.

Further, as shown in FIG. 10, there is one in which the cut end 38 is improved and one side is cut along the opening tape 42 to the inside of the seal band 40. This is intended to break the film spirally as shown by the dotted line in FIG. 11, but it is not reliable, and the same problem occurs due to the way the unsealing tape 42 is pulled.

The present invention has been made in view of such conventional problems, and by improving the unsealing structure of the seal band, the film wrapping body is excellent in unsealing property and has a necessary sealing force. The purpose is to provide.

[0007]

[Means for Solving the Problems]

 Means for achieving the above object will be described below with reference to FIG. 1 corresponding to the embodiment. The film wrapping body 44 with improved unsealing property is provided with a seal band 46 in which films are overlapped, and an adhesive spot 52 where overlapping films are adhered to each other and a weak adhesive spot 54 where peeling is easy. And a seal portion extending from there to one end of the package 44. The unsealing portion is constituted by the weakly bonded portion 54, and if necessary, the end portion of the unsealing tape is exposed. The seal portion is a portion following the weakly bonded portion 54, and the bonded portion 52 and the weakly bonded portion 54 are appropriately distributed and provided over the entire portion. At that time, the seal portion is alternately provided with the adhesive spots 52 and the weak adhesive spots 54 along the longitudinal direction of the seal band, and the respective boundary lines 62 are arranged so as to be inclined in the longitudinal direction of the seal portion. Then it becomes preferable.

[0008]

[Action]

 With the above configuration, one end of the unsealing portion such as the unsealing tape can be pulled to be separated from the case surface, so that the weakly bonded portion 54 of the unsealing portion of the seal band 46 is first separated from the case surface and floated. be able to. Further, when this portion is continued to be pulled, the film starts to tear or peel from the opening portion of the seal band 46, and is transmitted to the seal portion. The film can then be removed. At that time, since the adhesive spots 52 and the weak adhesive spots 54 are distributed over the entire sealing strip 46, the cutting line that crosses the seal strip 46 mainly floats up at the weak adhesive spots 54 that are easily peeled off. Properly select and proceed, or the adhesion portion 52 of the seal band 46 is sequentially peeled off. Incidentally, by appropriately selecting the ratio of the adhesive spots 52 and the weak adhesive spots 54 to be distributed to the seal band 46, the sealing force suitable for the transportation process, and thus the degree of opening property at the arrival place can be selected. However, when using the unsealing tape 50, only the unsealing tape 50 is removed and the main part of the film package 44 remains as it is, depending on the pulling method, but the vicinity of the intersection 55 of the seal band 46 is the case surface. Since it is raised from above, hold it and tear or peel off the film. Further, even when the film is cut in the middle, since the adhesive spot 52 and the weak adhesive spot 54 are distributed to the remaining seal band 46, hold the cut end of the seal band 46 to make the film similar. Can be removed. As described above, in the present invention, the seal strip has an excellent easy-opening action regardless of whether the opening tape 50 is used or not.

Then, on the seal band 46, the adhesive spots 52 and the weak adhesive spots 54 are alternately provided along the longitudinal direction of the seal band, and the respective boundary lines 62 thereof are arranged in the longitudinal direction of the seal band 46. Since the film is easily torn along each boundary line 62 when arranged so as to be inclined, the film is spirally broken by selecting an appropriate boundary line 62.

[0010]

[Embodiment of device]

 Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a perspective view showing a film package having an improved openability according to the present invention. This is an example of using the unsealing tape, but it is also clear from the action of the seal band that this can be omitted as described above. In the figure, 44 is a heat-shrinkable film package by caramel packaging applied to a case such as a tape cassette storage box, 46 is a seal band that crosses the center of one surface 48 of the package 44 in the longitudinal direction, and 50 is the seal band 46. It is an unsealing tape that crosses at a right angle to and adheres to the inner surface of the film. The film forming the package 44 is a multi-layered structure, for example, a polypropylene (OPP) layer is the center, and a non-stretched polypropylene (CPP) layer is co-extruded at both ends thereof, or a polyvinylidene chloride (PVDC) layer is formed. A three-layer body provided by coating is used. Although stretched polypropylene is tough even if it is thin, it cannot be heat-welded at low temperatures, so layers such as unstretched polypropylene and polyvinylidene chloride are provided on both sides to enable heat-welding at low temperatures. It should be noted that the stretched polypropylene is disadvantageous in that when it is heated to a high temperature during the formation of the seal band 46, the stretched polypropylene is stretched and therefore thermally contracts. The seal band 46 is provided with an adhesive portion (white portion) 52 where the overlapping films are adhered to each other, and a weak adhesive portion (black portion) 54 which is easily peeled off, and a portion near the intersection 55 with the opening tape 50 is weak. Adhesive spots 54 and weak adhesive spots 54 are distributed over the entire surface so as to reach the end of the surface 48 following the weak adhesive spot 54. In this way, by appropriately selecting the ratio of the adhesive spots 52 and the weak adhesive spots 54 to be distributed over the main part of the seal band 46, the sealing force suitable for the transportation process, and by extension, the degree of unsealing property at the destination can be selected. it can. By the way, the seal band 46 extends to the adjacent surface 56, and the similar bonding point 52 and weak bonding point 54 are provided there.

At the bonding points 52, the upper side of the overlapping portions corresponding to those points of the film are kept transparent and are bonded to each other by heat welding. Further, at the weakly bonded portion 54, gravure printing is performed on the upper side of the overlapping portion corresponding to those portions of the film so that heat welding is difficult. In order to prevent transfer to the case that is usually installed, the ink contains silicone resin or the case side surface is coated with silicone resin. Therefore, it is difficult to heat-weld the printed part. In general, as the gravure printing ink, one-component type, two-component type, PP type, PVDC type and the like are used depending on the film material and environment resistance. Depending on the case material, by selecting an ink that is difficult to transfer, a transfer inhibitor such as silicone resin becomes unnecessary.

At the time of unsealing, first, one end of the unsealing tape 50 is held from the cut end 58, and it is pulled and separated from the case surface. Then, the vicinity of the intersection 55 that hits the weakly bonded portion 54 of the seal band 46 can be lifted by first separating from the case surface. Further, when the unsealing tape 50 is continuously pulled, the film starts to tear or peel off from the vicinity of the intersection 55 of the seal band 46 and is transmitted to other parts. Therefore, the film is removed together with the opening tape 50. In the case where the unsealing tape is not used, the entire unsealed portion of the seal band around the portion where the unsealed tape shown in the figure is the unsealed portion. This part can be opened or broken by tearing or peeling it with a nail or the like and propagating this to peel off the entire seal band.

At this time, the adhesive spot 52 and the weak adhesive spot 54 are provided over the entire seal strip 46 so as to reach one end of the surface 48 provided with the seal strip 46 adjacent to the weak adhesive spot 54 near the intersection 55 or the unsealing portion. Therefore, the cutting line that crosses the seal band 46 mainly floats up, and by appropriately selecting and advancing the weakly adhesive spot 54, the adhesive spot 52 of the seal strip 46 is also sequentially peeled off. However, depending on how the unsealing tape 50 is pulled, only the unsealing tape 50 may be removed and the main part of the film package 44 may remain as it is. Also in this case, since the vicinity of the intersection 55 of the seal band 46 is lifted from the case surface, the film may be broken or peeled by holding it.

Further, as shown in FIG. 2, even when the film is cut in the middle and a part of the package 44 is separated in the direction of the arrow, the remaining seal band 46 is weakly bonded to the bonding point 52. Due to the distribution of the points 54, the film can likewise be removed from the case 60 by holding the cut end of its sealing strip 46 as shown in FIG.

Usually, as in the case of the seal band 46 as shown in FIG. 1, parallel quadrangular bonding points 52 and weak bonding points 54 are alternately provided along the longitudinal direction of the seal band 46, and each of them is arranged. If all the boundary lines 62 are arranged so as to be inclined in the longitudinal direction of the seal band 46, it is easy to tear along the boundary lines 62. Therefore, by pulling the unsealing tape 50 or the like, the film is appropriately formed. Boundary line 62 of is selected and it is torn in a spiral.

In the above-described embodiment, the main portion of the seal band is provided with parallelogram-shaped adhering points and weak adhering points alternately over the width of the seal band, but as shown in FIG. It is also possible to make the weakly bonded portion 66 into a small circular shape and distribute it together with the bonded portion 68 to change the pattern. Incidentally, if a small circular bonding portion 74 is provided near the intersection 72 of the seal band 64 with the unsealing tape 70, the sealing force near the intersection naturally increases.

[0017]

[Effect of device]

 According to the present invention described above, by pulling the unsealing tape or the unsealing portion, the weakly bonded portion near the intersection with the seal belt or the unsealed portion is lifted, and the entire sealing belt that follows the unsealed portion is pulled up. It can be easily removed from the case by tearing up to one end of the seal band by utilizing the distribution of adhesive and weak adhesion. Therefore, the blocking property is improved. However, since there are adhesion points and weak adhesion points over the entire seal band, it is possible to appropriately select the ratio and provide a sealing force suitable for the transportation process. Then, each boundary line between the adhesive portion and the weak adhesive portion of the seal band is provided over the width of the seal band, and when the seal band is inclined in the longitudinal direction, the film can be spirally torn along the appropriate boundary line. Therefore, it is convenient.

[Brief description of drawings]

FIG. 1 is a perspective view showing a film package having an improved openability according to the present invention.

FIG. 2 is a perspective view showing a partially opened state of the package of FIG. 1;

FIG. 3 is a perspective view showing a partially opened state of the package of FIG. 1;

FIG. 4 is a perspective view showing another film package with improved openability according to the present invention.

FIG. 5 is a perspective view showing a conventional film package provided with an opening tape.

6 is a perspective view showing a partially opened state of the package of FIG.

FIG. 7 is a perspective view showing another conventional film package provided with an opening tape.

8 is an enlarged front view showing a structure near a cut end in the conventional example of FIG. 7;

9 is a perspective view showing a partially opened state of the conventional example of FIG. 7. FIG.

FIG. 10 is a front view showing a structure near a cut end of a conventional film package provided with another opening tape.

FIG. 11 is a perspective view showing a partially opened state of the package of FIG. 10;

[Explanation of symbols]

 44 film wrapping body 46, 64 seal band 48 surface provided with crossing portion 50, 70 unsealing tape 52, 68, 74 adhesion portion 54, 66 weak adhesion portion 55, 72 intersection portion 58 cut edge 60 case 62 boundary line

Claims (3)

[Scope of utility model registration request] 1. A film wrapping body, comprising: a seal band formed by stacking films, and a bonding region where the overlapping films are bonded to each other and a weak bonding region where the films are easily peeled off. An unsealing portion formed along the entire surface of a weakly adhered portion extending to a predetermined length,
A film package with improved unsealing properties, characterized by comprising a seal portion provided by appropriately distributing adhesive portions and weakly adhesive portions after the opening portion. 2. The sealing portion is provided with a bonding portion and a weak bonding portion along the length of the seal band along the longitudinal direction thereof, and each boundary line thereof is arranged to be inclined with respect to the longitudinal direction of the seal band. The film package having improved openability according to claim 1. 3. The film package with improved openability according to claim 1, wherein the seal portion has a plurality of weakly adhered portions scattered over a seal band width.