JPH063866U - Sleeve body - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a sleeve body that can be easily fitted onto an article and can be reduced in cost. A sleeve body for externally fitting and mounting a flat tubular sleeve body 5 formed by polymerizing and fixing both side edges 3, 4 of a heat-shrinkable film 2,
The overlapped portion 6 in which the both side edge portions 3 and 4 are overlapped is provided at a position substantially at the center of the folding width t of the sleeve, and the sleeve main body 5 corresponding to the facing position 7 of the overlapped portion 6 is An adhesive film 8 having the same width as the overlapping portion 6 and the same thickness as the film 2 is adhered and configured.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sleeve body for use as an interior of a dry battery, or an exterior such as a chemical bottle.

[0002]

[Prior art]

 Generally, as shown in FIG. 6, a main body 18 of a dry battery is internally provided with a heat-shrinkable tube body C made of polyvinyl chloride (PVC) for the purpose of insulation, prevention of leakage of contents, and the like. However, due to environmental problems in recent years, the heat-shrinkable tube body C made of PVC is not preferable, and it is desired to change it to one made of polyethylene terephthalate (PET), which is nontoxic and highly water-absorbent.

However, since the PET is expensive, it is costly to produce a heat-shrinkable tube body. Therefore, as shown in FIG. 7, both side edges 13 and 14 of the PET film 12 are polymerized. The film 12 is sequentially fixed to a predetermined length, and the cut film 12 is opened by adsorbing the cut film 12 from both sides by a pair of adsorbents 15 and 16 to form a substantially circular sleeve D. Was formed, and the sleeve body D was externally fitted to the dry battery main body 18 and mounted by heat shrinkage.

[0004]

[Problems to be solved by the device]

 However, since the sleeve body D is thick only in the polymerized and fixed portion 17, the suction force exerted on the film 12 at the time of suction opening becomes unbalanced, and the sleeve body D opens in a distorted circular shape. It was difficult to fit on the main body 18.

Therefore, in order to suppress the deformation of the sleeve body D at the time of opening, it is necessary to give the film 12 of the sleeve body D a certain thickness or increase the folding diameter. .

However, when the thick film 12 is used as described above, the cost is increased by that amount, and when the internal article is the dry battery main body 18, a step contacting the main body 18 of the polymerized and fixed portion 17 is made. As the size of the dry battery 19 increases, the content of the battery body 18 leaks. Further, if the folding diameter is increased, the productivity is poor, shrinkage unevenness occurs when heat is shrunk, and the commercial value decreases.

The present invention has been made in view of the above conventional problems, and it is an object of the present invention to provide a sleeve body that can be easily fitted onto an article and can be reduced in cost. To do.

[0008]

[Means for Solving the Problems]

 The first technical means taken by the present invention to solve the above problems is a flat cylindrical sleeve formed by polymerizing and fixing both side edges 3 and 4 of a heat-shrinkable film 2. In the sleeve body for externally fitting the main body 5 onto the article 1, the overlapping portion 6 in which the both side edge portions 3 and 4 are overlapped is provided at a position substantially in the center of the folding width t of the sleeve, and The adhesive film 8 having substantially the same width as the overlapping portion 6 and substantially the same thickness as the film 2 is attached to the sleeve body 5 corresponding to the facing position 7 of the portion 6.

The second technical means is a flat tube formed by polymerizing and fixing the side edges 3a, 4a, 3b, 4b of the pair of films 2a, 2b having heat shrinkability. In the sleeve body for fitting the sleeve-shaped sleeve body 5 onto the article 1, the polymerized portions 6a and 6b in which the one film 2a and the other film 2b are polymerized are positioned substantially at the center of the folding width t of the sleeve. It is characterized in that they are provided facing each other and that the widths of both overlapping portions 6a and 6b are substantially the same.

[0010]

In the sleeve body of the present invention, the overlapped portion 6 and the sticking film 8 of the flat sleeve body 5 or both the overlapped portions 6a and 6b are adsorbed by the adsorbents 9 and 10, so that this sleeve The unadsorbed portion 11 of the main body 5 is curved and opened in a substantially circular shape.

At this time, the sleeve body 5 according to the present invention has rigidity because the portion having the overlapping portion 6 for adsorbing and the adhesive film 8 or both overlapping portions 6a, 6b are thick. Further, since the other portion (unadsorbed portion) including the folding position of the sleeve body 5 is thin, it has flexibility.

Therefore, the sleeve body of the present invention is easily opened by adsorbing the overlapped portion 6 and the adhesive film 8 or both the overlapped portions 6a and 6b with the adsorbents 9 and 10, and the rigidity of the thick portion is increased. The softness of the thin portion causes a synergistic effect, and the curved portion is curved in a well-balanced manner, and is opened in a substantially symmetrical symmetrical circular shape. Further, the rigidity of the thick portion allows easy mounting on the article 1.

[0013]

【Example】

 Hereinafter, an inner sleeve body of a dry battery will be described as an embodiment of the present invention with reference to the drawings.

As shown in FIG. 1, the first sleeve body A according to the present invention is externally fitted to the battery body 1 for the purpose of insulation, leakage prevention of contents, etc. As shown in FIG. 2, both sides 3 and 4 of the heat-shrinkable long film 2 are polymerized and fixed to form a flat tubular tube body 2 ', and On the outer surface of the tube body 2'corresponding to the facing position 7 of the superposed portion 6 which is superposed and fixed, an adhering film having substantially the same width as the superposed portion 6 and substantially the same thickness as the film 2, and made of the same material. 8 is attached, and further, the long tube body 2 ′ is sequentially cut into a predetermined length to form a sleeve body 5.

As shown in FIG. 3, the sleeve main body 5 includes a pair of adsorbents 9 and 10 which can be attached to and detached from each other on the overlapping portion 6 of the sleeve main body 5 and the adhesive film 8 and are attached from both sides. By sucking, the other portion (non-sucking portion 11) is curved, and the flat tubular sleeve body 5 is opened in a substantially circular shape. Therefore, by fitting the opened sleeve body 5 onto the dry battery body 1 and finally heating and shrinking it, the dry battery body 1 with the interior sleeve body attached is formed.

At the time of opening, since the portion of the sleeve body 5 to which the suction is applied (the overlapping portion 6 and the sticking film 8) is symmetrically provided in two layers (thickness), it has a considerable rigidity. Further, since the other non-adsorbed portion 11 including the folding position of the sleeve body 5 is provided as a single layer (thin wall), it has sufficient flexibility in the opening direction.

Therefore, due to the synergistic effect of the rigidity of the suction portions 6 and 8 and the flexibility of the non-suction portion 11, the non-suction portion 11 is curved in a well-balanced manner, and the flat tubular sleeve body 5 is symmetrical in left and right directions. Since it is opened in a circular shape and has appropriate rigidity in the length direction, it can be fitted onto the dry battery main body 1 reliably in a short time.

As described above, the sleeve main body 5 is opened in a well-balanced manner and is easily attached to an article (dry battery main body 1). Therefore, its thickness is half that of the conventional 60 μ-80 μ (about 30 μ- It is possible to use a considerably thin film 2 having a thickness of about 40 μm, and it is possible to sufficiently reduce the cost.

Therefore, it is possible to use an expensive thermoplastic film such as a polyethylene terephthalate (PET) film which is non-toxic and easy to dispose as a raw material of the heat shrinkable film 2 and the adhesive film 8. Even processing problems can be solved.

It should be noted that the overlapping portion 6 is located substantially in the center of the folding width t of the sleeve, and the shorter the width s, the better the cost can be reduced, but it can be securely fitted onto the article (dry battery body 1). In order to do so, the sleeve folding width t is set to about 1/4 to 4/5, preferably 1/3 to 2/3.

Further, the fixing means for the polymerized portion 6 is usually heat sealing or bonding with an adhesive. However, depending on the type of the films 2 and 8, when the solvent is used for bonding, the hardness of the polymerized portion 6 is low, Further, there is no reduction in heat shrinkability, which is preferable.

The thickness of the non-adsorbed portion 11 increases due to heat shrinkage, and after shrinkage, there is no difference in thickness between the portion where the thick polymerized portion 6 and the adhesive film 8 are attached and the non-adsorbed portion 11. After shrinkage, the sleeve body A has a uniform thickness and has a beautiful finish.

Further, during the heat shrinkage, the portion where the thick-walled polymerized portion 6 and the adhesive film 8 are attached contracts slower than the thin-walled non-adsorbed portion 11, so that, for example, the thick-walled polymerized portion 6 or If a print design or the like is provided on the portion where the adhesive film 8 is attached, the design will not be distorted on the way, and the product value will be improved in terms of design.

The adhesive film 8 may be provided on the inner surface of the film 2 corresponding to the overlapping portion 6 and the plane-named position 7. However, by providing the adhesive film 8 on the outer surface as in the above-described embodiment, the adhesive film 8 and the dry battery main body 1 are contacted. Since there is only one step 20 in the film 2 in contact with the film 2, there is an advantage that the leakage of the contents can be prevented more reliably.

Next, in the second sleeve body B according to the present invention, as shown in the schematic view of FIG. 4, the two side edges 3a, 4a, 3b, 4b of the pair of heat-shrinkable films 2a, 2b are separated from each other. A flat tubular sleeve main body 5 is formed by superposing, fixing and sequentially cutting to a predetermined length. In the second sleeve body B, the one film 2a and the other film 2b are formed. The overlapped portions 6a and 6b that have been overlapped with each other are provided so as to face each other and have substantially the same width.

Therefore, similar to the first sleeve body A, a pair of adsorbents 9 and 10 adsorb the both polymerized portions 6a and 6b from both sides to open a substantially circular shape and have an appropriate rigidity. Therefore, the article (dry cell body 1) can be fitted on the article extremely smoothly.

As described above, the second sleeve body B is different in that the pair of films 2a and 2b are used, and the widths of both the overlapping portions 6a and 6b are substantially the same, but the other points are the same as described above. The structure is the same as that of the first three-sleeved body A, and the reference numerals in the drawings are the same as those in FIGS.

As shown in FIG. 5, the overlapping portions 6a and 6b of the second sleeve body B may be formed by alternately superposing one film 2a and the other film 2b as shown in FIG. It is also possible that both side edges 3a and 4a of one film 2a are inside (or outside) and both side edges 3b and 4b of the other film 2b are outside (or inside).

Although the sleeve body for the interior of the dry battery is exemplified in the above embodiment, the sleeve body of the present invention is not limited to the one for the dry battery, and is a container for medicines, cosmetics, beverages and the like. Needless to say, it can be used for Further, the material of the heat-shrinkable film 2 is not particularly limited, and may be appropriately selected according to the application.

[0030]

[Effect of device]

 In the sleeve body of the present invention, only the overlapped portion for adsorbing and the adhesive film, or both overlapped portions are thick and the other portion including the folding position is thin, so that the overlapped portion of the flat sleeve body is thin. By adsorbing the adhesive film or the adhesive film or both polymerized parts with an adsorbent, the other part of the sleeve main body is curved, and the sleeve main body is opened in a left-right symmetrical substantially circular shape.

At this time, the sleeve body can be easily opened by the synergistic effect of the rigidity of the thick portion and the flexibility of the thin portion, so that the sleeve body can be smoothly fitted onto the article and the productivity can be improved. Get even better. Further, due to the uniform thickness difference of the sleeve body, uneven shrinkage does not occur even after thermal shrinkage, and the finished product has a beautiful design.

Further, even if the sleeve body of the present invention is a thinner film than the conventional one, the opening is easy and the shrinkage unevenness does not occur as described above. Even if a material that is easy to process is used, the thickness of the material can be kept to a minimum, so that the cost can be sufficiently reduced, environmental problems can be resolved, and the product value will be further improved.

[Brief description of drawings]

FIG. 1 is a sectional perspective view showing a mode of use of an embodiment of the present invention.

FIG. 2 is a perspective view of an embodiment of the present invention.

FIG. 3 is a cross-sectional view showing a state in which a sleeve body according to an embodiment of the present invention is opened.

FIG. 4 is a schematic sectional view showing another embodiment.

FIG. 5 is a schematic sectional view showing another embodiment.

FIG. 6 is a cross-sectional view of a tube body (including an article) showing a conventional example.

FIG. 7 is a cross-sectional view showing a state in which a sleeve body is opened showing a conventional example.

[Explanation of symbols]

 1 Dry Battery Main Body (Article) 2 Heat Shrinkable Film 3 One Side Edge 4 Other Side Edge 5 Sleeve Body 6 Polymerization Part 8 Adhesive Film 9 Adsorbent 10 Adsorbent t Sleeve Fold s Width of Adhesive Film

Claims (2)

[Scope of utility model registration request] 1. Both side edges 3, 4 of a heat-shrinkable film 2.
In the sleeve body for externally fitting and mounting the flat tubular sleeve body 5 formed by superposing and adhering on the article 1, the overlapping portion 6 in which the both side edge portions 3 and 4 are overlapped is The sleeve body 5 is provided at a position substantially in the center of the width t and corresponds to the facing position 7 of the overlapping portion 6,
A sleeve body, wherein an adhesive film 8 having substantially the same width as the overlapping portion 6 and substantially the same thickness as the film 2 is adhered. 2. A pair of heat-shrinkable films 2a, 2b
In the sleeve body for externally fitting and attaching the flat tubular sleeve body 5 formed by superposing and fixing each side edge portion 3a, 4a, 3b, 4b to the article 1, one film
The overlapped portions 6a and 6b formed by overlapping the film 2a and the other film 2b are provided so as to face each other at a substantially central position of the folding width t of the sleeve, and the widths of both overlapped portions 6a and 6b are substantially the same. A sleeve body characterized by that.