JP2003337396A - Container and method for manufacturing the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a container which is easy and inexpensive to manufacture, has sealing and unsealing performance, and is easy to handle and exhibit and a method for manufacturing the same. <P>SOLUTION: The container is formed of a shell plate 3 which forms a cylindrical body 4, and a first sealing cap 5 and second sealing cap 7 which are glued to the inner walls at both opening ends of the cylindrical body 4 and close both openings, in which the shell plate 3 forms overlapped sections 17 longer than the circumference of the cylindrical body 4 and overlapped and glued to the outer side of the cylindrical body 4 at the width from the first sealing cap 5 to the second sealing cap 6 and has a tongue 11 at the front end of the shell plate 3 on the overlapped outer side and the gluing of the overlapped sections 17 of the shell plate 3 is dissociated to unseal the container by raising the tongue 11. The method for manufacturing the same is provided. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container capable of accommodating an object to be stored, and more particularly to a container having a sealing property and an excellent opening property, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, for example, 1
As seen in containers such as 35-inch photographic film cartridges, a moisture-proof container is a hollow container with a plastic lid made of polyethylene, polypropylene, or the like, or a moisture-proof packaging material is used to first wrap an item to be packaged, and then the moisture-proof container. Is often packaged in an outer box made of paper or the like for design printing, and often has a stable rectangular shape.

The packaging forms as described above include (1) a plastic hollow container and a moisture-proof packaging material having a large environmental load, and (2) an inside of a plastic cylindrical hollow container having moisture-proofness and strength. The double packaging of the packaging and the external packaging, which is a design-printed rectangular-shaped paper container, meets the required function of the entire container for the first time, and there is a problem that it is over-packed. In order to improve such a problem as well as improve the sealing property, the unsealing property, and the display suitability, various containers have been developed and have reached the present.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the various problems in the prior art and achieve the following objects. That is, the object of the present invention is that it can be easily and inexpensively manufactured, and has excellent sealing property as well as openability,
It is another object of the present invention to provide a container that is excellent in handleability and is easy to display, and a manufacturing method thereof.

[0005]

The above problems can be solved by the following means. That is, the present invention relates to <1> a body plate that forms a tubular body portion, and a first sealing lid and a second sealing lid that are adhered to the inner walls of both opening ends of the tubular body portion to close the both openings. And the body plate is longer than the length of the circumference of the tubular body portion and overlaps the outside of the tubular body portion with a width from the first sealing lid to the second sealing lid. And a tongue piece is formed at the tip of the outer shell plate which is overlapped with the tongue piece, and by causing the tongue piece, the adhesion of the overlap portion of the shell plate is released and opened. A container according to claim 1, wherein at least a part of the tongue piece is adhered to the body plate together with the overlapping portion.

<2> The container according to <1>, wherein the tongue piece is adhered to the body plate with a weaker adhesive force than the overlapping portion.

<3> A cut end capable of reproducing the shape of the tubular body is formed by opening the part of the body plate covered with the tongue piece and then inserting the tip of the tongue piece. The container according to <1> or <2> above.

<4> The container according to any one of <1> to <3>, wherein the cut end is completely covered with the tongue piece.

<5> The method for manufacturing a container according to any one of <1> to <4>, wherein an adhesive surface corresponding to a part of the overlapping portion and the tongue of the body plate is heated. After that, the body plate is formed into a tubular shape, and a pressing member is pressed against a part of the overlapping portion and the tongue piece in the body plate, and at least a part of the tongue piece is attached to the body plate together with the overlapping portion. A method for manufacturing a container, which comprises press-bonding to form a tubular body.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of an embodiment of the present invention will be described below with reference to the drawings. It should be noted that components having substantially the same function will be described with the same reference numerals throughout the drawings, and the description thereof may be omitted in some cases.

A photographic film container which is an embodiment of the present invention will be described below. FIG. 1 is a perspective view showing an outline of a photographic film container which is one embodiment of the present invention, FIG. 1 (a) shows a state before unsealing, and FIG. 1 (b) shows a state after unsealing. . FIG. 2 shows a cross-sectional view (a) and a partially cutaway view (b) of the photographic film container, which is an embodiment of the present invention, in a state before unsealing. FIG. 3 is a perspective view of a photographic film container according to an embodiment of the present invention, and FIG.
Shows the opened state, and FIG. 3 (b) shows the resealed state. FIG. 4 is a cross-sectional view (a) and a partial cutaway view (b) showing a resealed state of a photographic film container according to an embodiment of the present invention. In the following description, a photographic film cartridge is used as an item to be stored, but it goes without saying that the embodiment of the present invention can be easily applied to other items to be stored.

The photographic film container 1 is shown in FIGS.
As shown in (b), a tubular body portion 4 formed by a body plate 3, and a first sealing lid which is adhered to both inner walls of both opening ends of the tubular body portion 4 to close and seal both openings. 5 and the second sealing lid 7, and a 135 type photographic film cartridge 9 is housed in the container 1 as one embodiment.

The photographic film container 1 has a cylindrical body 4 which is a prism having an open cross section of a square with rounded corners. Further, the photographic film container 1 has a tongue piece 11 at the tip of an external body plate in order to realize resealing property, and a tongue piece tip portion 12 which is a tip end of the tongue piece 11 has a tubular shape after opening. It can be inserted into a cut end 13 provided in the body portion 4 (body plate 3).

The body plate 3 is longer than the outer peripheral length of the tubular body portion 4 and has a width from the first sealing lid 5 to the second sealing lid 7 (length along the width direction of the body plate 3). An overlapping portion 17 is formed on the outside of the tubular body portion 4 so as to be overlapped and adhered thereto, and the outer tip end portion of the body plate 3 is a tongue piece 11. When forming the closed container, the overlapping portion 17 of the body plate 3 is adhered with appropriate strength,
The container 1 can maintain moisture resistance. That is, the adhesive strength of the overlapping portion 17 is such that it does not shift during handling during product transportation, product display, and storage by the user, but when using a product such as a photographic film stored in the container, a tongue piece is used. When 11 is caused by an average adult's force, the adhesive strength of the overlapping portion 17 is such that the adhesive can be released and opened.

The tongue piece 11 has a cut portion 13 together with an overlapping portion 17 which is laminated and adhered to the outside of the tubular body portion 4 of the body plate 3.
Is adhered to the body plate 3 (cylindrical body portion 4) so as to completely cover the. Although the adhesion position of the tongue piece 11 to the body plate 3 and the number thereof are arbitrary, it is preferable to provide the adhesion position between the tip end portion 12 of the tongue piece 12 and the position where the cut end 13 is located. Since the tongue piece 11 is adhered to the body plate 3 (cylindrical body portion 4), the tongue tip portion 12 is removed from the body plate 3 (cylindrical body portion 4).
Is prevented from floating and is stuck to the tongue piece 11 when it is carelessly handled, which prevents the tongue piece 11 from being opened, and also prevents the entanglement of the containers during the display due to the floating of the tongue piece 11. It suppresses and makes it easier to stack at the time of display. By adhering the tongue piece 11 to the body plate 3 (cylindrical body portion 4) in this way, the handleability is excellent and the display suitability is improved.

The tongue piece 11 is preferably adhered to the body plate 3 with an adhesive force which is equal to or weaker than the overlapping portion 17 which is laminated and adhered to the outside of the cylindrical body portion 4 of the body plate 3. From the viewpoint of unsealing property, it is preferable that they are bonded with a weaker adhesive force than the overlapping portion 17. Specifically, for example, the adhesive force (adhesive strength) of the tongue piece 11 to the body plate 3 is
It is about 4.9 to 19.6 N (0.5 to 2.0 kgf), and on the other hand, the adhesive force (adhesive strength) of the overlapping portion 17 adhered to the outer side of the tubular body portion 4 of the body plate 3 is overlapped. 19.6 ~
It is about 68.6 N (2.0 to 7.0 kgf).

The length of the tongue piece 11 along the longitudinal direction of the container 1 (the length along the width direction of the body plate 3) is gradually reduced so as not to reach the corner of the container 1, and the cut 13
The length of the tongue piece 11 at the portion that covers is set so that it can be inserted into the cut end 13 after opening and completely covers the cut end 13 before opening. As a result, the light-shielding property of the container 1 is improved, which is convenient when storing an object to be stored such as the photographic film cartridge 9 that needs the light-shielding property. In addition, the photographic film cartridge 9 is stored as an article to be stored.
When the light shielding property is not required as described above, it is not necessary to completely cover the cut end 13 with the tongue piece 11.

The length of the tongue piece 11 along the longitudinal direction of the portion of the container 1 which covers the cut end 13 is determined as follows.
Is longer than the length of the container 1 in the longitudinal direction and shorter than the length of the container 1 in the longitudinal direction. As a result, it is possible to improve the light-shielding property and ensure the sealing property when the tongue tip 12 is inserted into the cut end 13 after opening.

Container 1 at tongue tip 12 of tongue 11
The length along the longitudinal direction of the container is 3 of the longitudinal length of the container 1.
5 to 70% is preferable, and 50 to 60% is particularly preferable. On the other hand, the length of the tongue piece 11 along the width direction of the container 1 (the length along the longitudinal direction of the body plate 3) is such that it can be inserted into the cut end 13 after opening and does not reach the edge of the container 1. Is set as follows.

A part of the body plate 3 covered with the tongue piece 11 is provided with a cut end 13 into which the tip 12 of the tongue piece can be inserted. 1
The shape of the tubular body portion 4 can be reproduced again by inserting the same into the cylindrical body portion 3. The length of the cut 13 along the longitudinal direction of the container 1 (the length along the width direction of the body plate 3) is set so that the tongue piece 11 is completely covered and the tongue tip 12 is insertable. .

The first sealing lid 5 and the second sealing lid 7 are a square main body having rounded corners along the shape of the opening of the tubular body 4, and are substantially perpendicular to the peripheral edge of the main body. The outer surface of the overhanging portion is adhered to the inner wall of the opening end of the tubular body portion 4 to close both openings of the tubular body portion 4. The first sealing lid 5 and the second sealing lid 7 can be easily processed by drawing, for example.

As shown in FIG. 2A, the photographic film container 1 is provided with a moisture-proof film 15 inside the cylindrical body 4 so as to cover the cut end 13. The moisture-proof film 15 is provided inside the tubular body 4 with a width from the first sealing lid 5 to the second sealing lid 7, and covers the periphery of the cut portion 13 from the inside in the tubular body 4. Therefore, the invasion of gas and water vapor from the cut opening 13 before opening is prevented. further,
The moisture-proof film 15 wraps the inner end of the body plate 3 and extends to the overlapping portion 17 provided outside the tubular body portion 4. The so-called “edge protection”, which protects the inner end of the tubular body portion 4 with the moisture-proof film 15, prevents gas and water vapor from the cut end surface of the body plate 3 from entering the container, and protects the moisture-proof property of the container 1. It is important to guarantee. Further, the moisture-proof film 15 is formed on the inside of the container 1 of the cut end 13 so as to have a bag shape into which the tip 12 of the tongue piece can be inserted.
Is fixed in the tubular body 4 by a method such as heat sealing so as to surround the circumference of the tubular body 4 at an appropriate distance from the cut surface 13 on the inner surface side.

The photographic film cartridge 9 accommodated in the photographic film container 1 is fixed by being sandwiched between the first sealing lid 5 and the second sealing lid 7, as shown in FIG. 2 (b). Can also be formed. When the second sealing lid 7 is closed by pressing the four sides of the tubular body 4 inward rather than the natural state, the tubular body 4 will return to its natural state after the container 1 is completed. The both sealing lids are pushed inward, and the photographic film cartridge 9 is fixed in the container 1 by the both sealing lids in this state.

That is, in the photographic film container 1, after forming the tubular body portion 4 and the first sealing lid 5, the photographic film cartridge 9 is housed in the tubular body portion 4 and finally It may be manufactured by forming the second sealing lid 7. When the second sealing lid 7 is formed, as described above, the elasticity of the first sealing lid 5 and the second sealing lid 7 is used to sandwich both sides of the photographic film cartridge 9 to form a tubular shape. It can be fixed inside the body 4.

The photographic film container 1 is shown in FIGS.
As shown in (b), the tongue piece 11 provided on the outer tip of the body plate 3 is used as a clue to open the tongue piece 11 by pulling it up. That is, by the pulling up operation, the adhesion of the overlapping portion 17 between the body plates 3 is released, and subsequently, the adhesion of the body plate 3, the first sealing lid 5 and the second sealing lid 7 is also performed as the tubular body portion 4. It is peeled off in a state where one side of the formed square pole is completely dissociated. By such an operation, the photographic film container 1 is opened and the photographic film cartridge 9 is taken out. As described above, the photographic film container 1 has excellent sealing property before opening, and can be easily opened by raising the tongue piece 11.

Subsequently, the opened photographic film container 1 is used.
Further, for example, when the photographic film cartridge 9 after the photographing is re-stored, the photographic film cartridge 9 is stored again, and the tongue tip 12 is inserted into the cut opening 13 so that the tubular body portion 4 The form is regenerated and resealed.

As shown in FIG. 4 (a), after the photographic film container 1 is opened, the photographic film container 1 accommodates the photographic film cartridge 9 if necessary, and the tongue tip 12 is cut. It is resealed by inserting it into the pocket portion formed by the moisture-proof film 15 inside 13 and the inner wall of the tubular body portion 4. In the container 1 for photographic film thus resealed, as shown in FIG. 4B, the photographic film cartridge 9 is re-stored inside, and the tongue tip 12 is inserted from the cut end 13 into the container 1. Has been inserted.

A method for manufacturing a photographic film container which is an embodiment of the present invention will be described below. First, for the body plate 3 forming the tubular body portion 4 of the photographic film container 1, it is preferable to use a laminate in which vapor-deposited layers of metal or inorganic oxide are laminated. Before forming the container, the body plate 3 is provided with a cut end 13 and a moisture-proof film 15 is attached. The cut opening 13 may be simply a cut, or may be opened with a width of about a thickness. Further, the periphery of the cut end 13 can be covered from the inside, and the moisture-proof film 15 is heat-sealed to the body plate 3 even outside the body plate 3 so as to cover the cut end of the body plate 3. In this case, it suffices to stick only the both end sides of the moisture-proof film 15 parallel to the length direction of the cut end 13 (longitudinal direction of the container 1) to the inside of the body plate 3. By sealing the first sealing lid 5 and the second sealing lid 7, both end sides of the moisture-proof film 15 perpendicular to the length direction of the cut portion 13 (width direction of the container 1) are attached and sealed.

Subsequently, the tubular body portion 4 is formed by using the body plate 3. A moisture-proof film 15 is heat-sealed on the outer side of the body plate 3 so as to cover the cut end of the body plate 3 parallel to the cut end 13. The moisture-proof film 15 and the inner side of the body plate 3 are weakly adhered to each other, and The film 15 and the inside of the tongue piece 11 are weakly bonded. For this purpose, a sealant layer may be provided on either the innermost outermost layer of the body plate 3 (including the tongue piece 11) or the outermost layer of the moisture-proof film 15.

Specifically, as shown in FIGS. 5 to 8, it is preferable to form the tubular body portion 4 by using the body plate 3. The apparatus for forming the tubular body portion 4 includes a core metal 100 having rounded corners and a square cross section, and a body plate 3 arranged around the corner portion of the core plate 3 and a core metal 10.
Bending dies 102 to 108 that press and bend the corners of 0,
Seam clamp (pressing member) 110 for crimping
And heat rods 112 and 114 for performing hot air
, And the other main components are omitted.

First, the body plate 3 is arranged on one side of the core metal 100 so as to abut on the vicinity of the central portion thereof, and corresponds to the overlapping portion 17 and the tongue piece 11 when the cylindrical body portion 4 of the body plate 3 is formed. The bonding surfaces (near both ends) to be heated are brought close to the heat rods 112 and 114 and heated by hot air (FIG. 5). Near one end on the side where the moisture-proof film 15 is arranged (one adhesive surface)
Then, the heat rod 112 is approached from the lower side to perform hot air, and the heat rod 114 is approached from the upper side to perform hot air near the other end (the other bonding surface). Two bending dies 102 and 104 arranged below the core metal 100 and the body plate 3 are interlocked around the two corners of the core metal 100 with the body plate 3 interposed therebetween. Is folded in a U shape (Fig. 6). Furthermore, two bending dies 1
06 and 108 are body plates 3 around the two corners of the core metal 100.
The body plate 3 is bent into a tubular shape by being interlocked via (FIG. 7).

Next, the seam clamp 110 is pressed against the overlapping portion 17 and the tongue piece 11 of the body plate 3 which is bent into a tubular shape, for example, at 220 ° C., a pressure of 0.1 MPa, and a pressing time of 2 seconds to overlap. The tongue piece 11 is crimped together with the portion 17 to form the tubular body portion 4. (FIG. 8).

As described above, the bonding surfaces (near both ends) corresponding to the overlapping portion 17 and the tongue piece 11 when the tubular body portion 4 is formed on the body plate 3 are heated, and the body plate 3 is further bent into a tubular shape.
By pressing the pressing member (seam clamp 110) against the overlapping portion 17 and the tongue piece 11 overlapping with each other for crimping, not only the pressing time can be shortened and the productivity is improved, but also the pressing member (seam clamp 110) is pressed. A stable adhesive surface can be obtained according to the surface shape.

Here, as shown in FIG. 9, the pressing surface of the seam clamp 110 is provided with a convex portion 110a formed from one end to the other end in the longitudinal direction. The central portion of the convex portion 110a is bent in a V shape. This convex part 1
When the seam clamp 110 is pressed against the overlapping portion 17 and the tongue piece 11, the V-shaped bent portion in the central portion of 10a is
The overlapped portion 17 is pressed against the tongue piece 11. Therefore, as shown in FIG. 10, the tubular body portion 4 is obtained in which the tongue piece 11 is crimped together with the overlapping portion 17 along the shape of the convex portion 110a of the seam clamp 110. The shaded portion in FIG. 10 indicates the adhesive portion.

Incidentally, an adhesive surface (near both ends) corresponding to the overlapping portion 17 and the tongue piece 11 when the tubular body portion 4 is formed on the body plate 3.
Although the form of heating is explained, only the overlapping portion 17 is heated,
Alternatively, the pressing member (seam clamp 110) may be pressed against the overlapping portion 17 and the tongue piece 11 for pressure bonding. Further, although the configuration in which the convex portion 110a having the V-shaped bent portion is provided in the central portion is described as the pressing surface of the seam clamp 110, the present invention is not limited to this, and the central portion is bent into a square or arc shape. Alternatively, a convex portion having a curved portion may be provided,
Further, it may be a form in which a convex portion formed by curving the whole is provided.

The cross-sectional shape of the tubular body portion 4 is not limited to a square with rounded corners, but may be a polygonal shape with nine rounded corners, particularly a quadrangle, It is preferably a pentagon, a hexagon or the like.

Then, one opening end of the tubular body portion 4 is sealed with the first sealing lid 5. There are various sealing methods, but a sealing lid formed so as to fit inside the tubular body 4 is fitted into one opening end, and this is sealed with the inside of the opening end of the tubular body 4 by heat sealing. It is preferable to do. Next, after storing the photographic film cartridge 9 in the tubular body 4, the tubular body 4
By closing the other open end of the above with the second sealing lid 7 in the same manner, the photographic film container 1 can be manufactured.

Materials that can be used for the photographic film container according to the embodiment of the present invention will be described below. Figure 11
1 is a schematic cross-sectional view showing an example of a layer structure of materials that can be used in a photographic film container according to an embodiment of the present invention.
1 (a) shows an example of the layer structure of the body plate, FIG. 11 (b) shows an example of the layer structure of the sealing lid, and FIG. 11 (c) shows an example of the layer structure of the moisture-proof film.

First, the material of the body plate will be described with reference to FIG. The body plate 3 is a gas barrier laminate including the paper layer 20, a printed layer 22 is printed on the outside of the paper layer 20 (outer wall side of the tubular body portion 4), and polyethylene ( A heat seal layer 23 made of a polyolefin-based thermoplastic resin such as PE) may be provided. Inside the paper layer 20 (on the inner wall side of the tubular body portion 4), a polyolefin-based thermoplastic resin layer 25 such as a PE layer,
A gas barrier vapor deposition layer 27 and a sealant layer (or heat seal layer) 29 are formed.

As the gas barrier vapor deposition layer 27, a vapor deposition layer of a metal or an inorganic oxide can be used, and any material having a gas barrier property against oxygen, water vapor and the like may be used. Examples of the metal to be vapor-deposited include aluminum and magnesium. In addition, examples of the inorganic oxide to be deposited include silicon oxide, magnesium oxide, aluminum oxide and the like. However, the gas barrier vapor deposition layer 27 is not limited to the vapor deposition layer of metal or inorganic oxide, and a material having the above gas barrier function, such as liquid crystal polymer (LCP), may be used.

As these inorganic vapor deposition films, thin film handbooks p879 to p901 (Japan Society for the Promotion of Science), vacuum support handbooks p502 to p509, p612, p81
0 (Nikkan Kogyo Shimbun, Vacuum Handbook revised edition p132
To p134 (ULVAC Japan Vacuum Technology KK). In particular,
_{Cr 2 O 3, Si x O} y (x = 1, y = 1.5~2.0),
Ta ₂ O ₃ , ZrN, SiC, TiC, PSG, Si
₃ N ₄ , single crystal Si, amorphous Si, W, Al ₂ O _{3 and the} like can be mentioned.

Optimum conditions for the thickness of the gas barrier vapor deposition layer 27 differ depending on the type and composition of the metal or inorganic oxide used, but it is generally desirable to be in the range of 15 to 300 μm, and the value is appropriate. You can choose. However, when the film thickness is less than 30 μm, the entire surface of the sealant layer (or heat seal layer) 29 may not be a film, or the film thickness may not be sufficient, so that the function as a gas barrier layer cannot be sufficiently achieved. There is. Also, the film thickness is 300
When the thickness exceeds μm, it becomes difficult to maintain flexibility in the thin film, and cracks may occur in the thin film due to external factors such as bending and pulling after the film formation.
A preferable vapor deposition layer thickness is in the range of 20 to 150 μm.

There are various methods for forming a vapor deposition layer made of a metal or an inorganic oxide as the gas barrier vapor deposition layer 27, and a typical vacuum vapor deposition method is typical, but other thin film forming methods such as a sputtering method and an ion plating method. The Ting method or the like can also be used. However, at present, the vacuum deposition method has the highest productivity. In the vacuum vapor deposition apparatus used for the vacuum vapor deposition method, an electron beam heating method or a resistance heating method is preferable as the heating means, and in order to improve the adhesion between the vapor deposition film and the base material and the denseness of the thin film, the plasma assist method or An ion beam assist method can also be used.

The sealant layer 29 is composed of a peelable material that can be easily opened. That is, in the unopened state, the sealant layer 29 is heat-sealed with the moisture-proof film to seal the overlapping portion 17. However, when opening
Since the adhesive force of the overlapping portion 17 is appropriately weak, the adhesive portion of the overlapping portion 17 can be separated.

The sealant layer 29 can be manufactured by using a thermoplastic resin film such as PE as a material, and if necessary, an anchor coat layer as described in JP-A-2000-6304, or JP-A-2001-2001. The shear elastic modulus as described in 145973 is (0.01 to 1) × 10.
^A primer layer made of a resin of ⁹ (N / m ² ) may be provided.

The polyolefin-based thermoplastic resin layer 25 is
During extrusion lamination, the resin functions as an adhesive layer when the resin is melted in a curtain shape and the gas barrier vapor deposition layer 27 and the paper layer 20 are bonded together, and shrinkage during lamination is reduced to allow for workability at low temperature. Then, MFR is 3
It is preferably at least (g / 10 min). MFR
If less than 3 (g / 10 min), the low-temperature processability is poor and the shrinkage during lamination becomes large, so that cracks may occur in the gas barrier vapor deposition layer 27 and the gas barrier property may deteriorate. Preferably, the MFR is 5-14
It is in the range of (g / 10 min).

Polyethylene, polypropylene, ethylene-vinyl acetate copolymers, ionomers and the like can be used for the polyolefin thermoplastic resin layer 25, but polyethylene is most preferable from the viewpoint of extrusion processability.

Here, the temperature at which the polyolefin thermoplastic resin is melted in a curtain shape and extruded is preferably a low temperature at which the gas barrier property of the gas barrier vapor deposition layer 27 is not thermally deteriorated. The kind of resin used and the extrusion thickness Optimal conditions vary depending on the size. 32 for polyethylene
It is preferably 0 ° C. or lower, more preferably 300 ° C. or lower. If it exceeds 320 ° C., the gas barrier vapor deposition layer 27 may be damaged by heat and the gas barrier property may deteriorate.
If the temperature is lower than 250 ° C, defects may occur in extrusion processing, and therefore melt extrusion is preferably performed in the range of 250 to 320 ° C.

When the extrusion temperature is lower than 260 ° C., the natural oxidation that occurs during free fall from the T die is insufficient, and the adhesive strength between the sealant base material and the paper may be weakened. Therefore, it is preferable to forcefully oxidize in order to make up for this deficiency of oxidation, and it is preferable to use a surface treatment such as an ozone treatment method or a corona treatment method together with the extrusion lamination in such a case.

As the ozone treatment method, ozone is sprayed on at least one surface of the melted resin so that the temperature of the resin is not excessively lowered and is not vibrated. As a method for generating ozone, a known method may be used, and for example, it can be easily generated by discharge treatment of air in a closed container,
It can be quantitatively transported by a carrier gas.

The optimum thickness of the polyolefin thermoplastic resin layer 25 varies depending on the resin composition, extrusion temperature and the like. For example, when polyethylene is extrusion laminated at a temperature of 300 ° C. or lower, 10 to 20 μm is preferable. . If it exceeds 20 μm, the stress when the resin layer is cooled and cured becomes too large, and the gas barrier vapor deposition layer 27
There is a risk that the strain will be transmitted to and cracks will occur.
If it is 10 μm or less, it may cause a problem in extrusion processing. A preferred thickness is in the range of 15-20 μm.

The paper layer 20 has a function of imparting strength to the photographic film container 1 as a whole, and is also used as a printing substrate for design printing characters, pictures, drawings and the like. The type of paper can be selected according to the function of the target packaging material, the printing content, etc., and includes, for example, high-quality paper, kraft paper, coated paper,
Cup paper or the like can be used. The thickness of the paper can be arbitrarily selected according to the purpose of use. In particular, cup paper has a high moldability, and since delamination hardly occurs when the container is opened, it has an excellent appearance.

The heat seal layer 23 is used for adhesion when forming the overlapping portion 17 of the tubular body portion 4 and for adhesion of the tongue piece 11 and the body plate 3 (the tubular body portion 4). Polyethylene, polypropylene, ethylene-vinyl acetate copolymer,
Resins such as ethylene-methacrylic acid copolymers, ethylene-methacrylic acid ester copolymers, ethylene-acrylic acid copolymers, ethylene-acrylic acid ester copolymers and their metal crosslinked products are also used. Although the thickness is determined according to the purpose, it is generally in the range of 15 to 200 μm. As a method for laminating the heat seal layer 23, a dry laminating method for laminating a film made of the above resin,
Examples of known methods include a non-solvent laminating method and an extrusion laminating method in which the above resin is melted by heating and extruded in a curtain shape to be laminated.

Next, the material of the first sealing lid or the second sealing lid will be described with reference to FIG. 11 (b). First sealing lid 5
Alternatively, the second sealing lid 7 is also a gas barrier laminate including the paper layer 20, and the printing layer 22 can be provided outside the paper layer 20 (outer wall side of the container 1) and inside (the inner wall of the container 1). On the side), a polyolefin-based thermoplastic resin layer 25 and a plastic substrate 26 on which a gas barrier vapor deposition layer 27 is formed are laminated.

The plastic base material 26 is made of a polymeric plastic material and serves as a base material for vapor deposition of the gas barrier vapor deposition layer 27. For example, polyester films such as polyethylene terephthalate (PET) and polyethylene naphthalate, polyolefin films such as polyethylene and polypropylene, polystyrene films, polyamide films, polyvinyl chloride films, polycarbonate films, polyacrylic nitrile films, polyimide films, etc. are used. It may be stretched or unstretched, and one having mechanical strength and dimensional stability is preferable.

These polymer plastic materials are processed into a film and used as a plastic substrate 26. A polyethylene terephthalate film arbitrarily stretched in the biaxial direction is preferably used. Further, various well-known additives and stabilizers such as an antistatic agent, an anti-UV agent, a plasticizer and a lubricant may be used on the surface of the plastic substrate 26, so that the adhesiveness with the gas barrier vapor deposition layer 27 is improved. In order to improve the quality, the surface of the plastic base material 26 may be previously subjected to corona treatment, low temperature plasma treatment, ion bombardment treatment, or chemical treatment or solvent treatment.

The thickness of the plastic base material 26 is not particularly limited, but it is suitable as the container 1 (packaging material), has a property for laminating other layers, and has a gas barrier vapor deposition layer 27. Considering the workability in forming the film, the range of 3 to 200 μm is practical, and the range of 6 to 30 μm
It is preferably m. Further, in consideration of mass productivity, the plastic base material 26 is formed so that a thin film can be continuously formed.
Is preferably a long film.

The gas barrier vapor deposition layer 27 and the polyolefin-based thermoplastic resin layer 25 are the same as those described above for the body plate.

Hereinafter, the material of the moisture-proof film is shown in FIG.
A description will be given with reference to (c). In the moisture-proof film 15, a gas barrier vapor deposition layer 27 is provided on the surface of a plastic substrate 26, and a heat seal layer 23 made of a thermoplastic resin is formed on one surface layer of the gas barrier vapor deposition layer 27. A sealant layer (or heat seal layer) 29 is provided on the other surface. Each of these layers is the same as the above description regarding the body plate.

As already described, in the photographic film container 1, from the viewpoint of the easy-to-listen property, the adhesive portion and the tongue piece 11 and the body plate 3 (tube) when the overlapping portion 17 of the tubular body 4 is formed. The sealant layer 29 is formed on one surface and the heat seal layer 23 is formed on the other surface of the adhesive body 4). The heat seal layer 23 is (1) the outermost layer of the body plate 3,
(2) It can be provided on either the outermost layer of the moisture-proof film 15 heat-sealed to the body plate 3 or (3) the innermost layer of the body plate 3 (including the tongue piece 11).

In the embodiment, the form of the photographic film container has been described, but when this container is used as a moisture-proof container, it is used for the body plate 3, the first sealing lid 5 and the second sealing lid 7. The material to be used and the moisture permeability of the moisture-proof film 15 are 1.0 g.
/ M ² . It is preferably 24 hours (40 ° C./90% RH) or less. This water vapor permeability is a value measured by the method specified in JIS Z0208.

In the embodiments, the photographic film is used as the object to be stored, but the present invention is not limited to this. In particular, the container of the present invention can be a container excellent in gas barrier property, moisture proof property, and the like, and thus is suitable for, for example, a detergent that dislikes steam, a photographic film, a food that dislikes steam and oxygen, and a pharmaceutical packaging. In order to completely eliminate the influence of oxygen and water vapor during storage, a dehydrating agent and an oxygen scavenger may be packed together in the container.

Further, since the container of the present invention can be stored again, it is convenient when it is used for the purpose of storing the product stored after opening and returning it for post-treatment. Photographic film is one such example, 135 type film cartridge, Brownie type film, AP
A roll-shaped photographic film such as an S type film is suitable as an object to be stored.

In the embodiment, since the container is a single packaging mainly made of paper, it does not hinder the incineration, and the normal incineration process can be performed even when it is discarded, and the environmental load can be reduced. . Further, when the container has a square cross-sectional shape, it is particularly convenient for displaying and storing the container. Further, since the container is made of a laminated material having a gas barrier property and a water vapor barrier property, it has airtightness against oxygen and water vapor.

Needless to say, the container according to the above-described embodiment of the present invention is not to be construed as a limitation and can be realized within a range satisfying the constituent requirements of the present invention.

[0066]

As described above, according to the present invention, a container which can be easily and inexpensively manufactured, has a sealing property, an excellent opening property, an excellent handling property, and is easy to display, and a manufacturing method thereof are provided. can do.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a photographic film container which is one embodiment of the present invention, FIG. 1 (a) shows a state before unsealing, and FIG. 1 (b) shows a state after unsealing. .

FIG. 2 shows a cross-sectional view (a) and a partially cutaway view (b) of the photographic film container, which is an embodiment of the present invention, in a state before unsealing.

FIG. 3 is a perspective view of a photographic film container which is an embodiment of the present invention, and FIG. 3 (a) shows an opened state,
FIG. 3B shows the state of resealing.

FIG. 4 is a cross-sectional view (a) and a partially cutaway view (b) showing a resealed state of a photographic film container according to an embodiment of the present invention.

FIG. 5 is a schematic diagram illustrating a method for forming a tubular body portion of a photographic film container that is an embodiment of the present invention.

FIG. 6 is a schematic diagram illustrating a method for forming a tubular body portion of a photographic film container that is an embodiment of the present invention.

FIG. 7 is a schematic diagram illustrating a method for forming a tubular body portion of a photographic film container that is an embodiment of the present invention.

FIG. 8 is a schematic diagram illustrating a method for forming a tubular body portion of a photographic film container that is an embodiment of the present invention.

FIG. 9 is a schematic view showing a pressing surface of a seam clamp (pressing member) used to form the tubular body of the photographic film container according to the embodiment of the present invention.

FIG. 10 is a partial cutaway view for explaining an adhesive portion of a photographic film container which is an embodiment of the present invention.

FIG. 11 is a schematic cross-sectional view showing an example of the layer structure of a material that can be used in the photographic film container according to the embodiment of the present invention, and FIG. 11A shows an example of the layer structure of the body plate.
11B shows an example of the layer structure of the sealing lid, and FIG. 11C shows an example of the layer structure of the moisture-proof film.

[Explanation of symbols]

1 Photographic film containers 3 body plate 4 tubular body 5 First sealing lid 7 Second sealing lid 9 Photographic film cartridge 11 tongue 12 Tip of tongue 13 cut 15 Moisture-proof film 17 Overlap

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B65B 51/10 B65B 51/10 M B65D 8/16 B65D 8/16 77/10 77/10 (72) Invention Kozo Tanaka, 210 Nakanuma, Minamiashigara City, Kanagawa Prefecture, Fuji Photo Film Co., Ltd. (72) Inventor, Taro Shimokawachi 210, Nakanuma, Minami Ashigara City, Kanagawa Prefecture, Fuji Photo Film Co., Ltd. (72) Atsushi Sada, Taito-ku, Taito-ku, Tokyo 1 5th-1st in Toppan Printing Co., Ltd. (72) Inventor Makoto Yamaguchi 1-5th Taito in Taito-ku, Tokyo 1st-5th in Toppan Printing Co., Ltd. (72) Hiroyuki Mizuma 1-chome Taito in Taito-ku, Tokyo No. 5 No. 1 Toppan Printing Co., Ltd. F term (reference) 3E049 AA02 AB10 BA04 DB01 FA04 3E061 AA30 AB15 AD02 AD09 DA01 DB01 DB06 3E067 AA11 AB39 BA05A BB14A BC06A CA05 C A12 EA04 EA20 EB11 FA01 GD06 3E094 AA02 BA11 CA19 CA40 DA02 EA20 HA01 HA08

Claims (5)

[Claims] 1. A body plate which forms a tubular body portion, and a first sealing lid and a second sealing lid which are adhered to inner walls of both opening ends of the tubular body portion to close the both openings. The body plate is longer than the length of the circumference of the tubular body portion and is overlapped and bonded to the outside of the tubular body portion with a width from the first sealing lid to the second sealing lid. While forming the overlapping part,
A container that has a tongue piece at the tip of the overlapping outer body plate, and by causing the tongue piece, the adhesion of the overlapping portion of the body plate is released and the container is opened. A container, a part of which is adhered to the body plate together with the overlapping portion. 2. The tongue piece is bonded to the body plate with a weaker adhesive force than the overlapping portion.
The container described in. 3. A part of the body plate covered with the tongue piece,
The container according to claim 1 or 2, wherein a cut end capable of reproducing the shape of the tubular body is formed by inserting the tip of the tongue piece after opening. 4. The container according to claim 1, wherein the cut end is completely covered with the tongue piece. 5. The method of manufacturing a container according to claim 1, wherein after heating an adhesive surface corresponding to a part of the overlapping portion and the tongue piece of the body plate, the body A plate is formed in a tubular shape, and a pressing member is pressed against the overlapping portion and a part of the tongue piece in the body plate, and at least a part of the tongue piece is crimped to the body plate together with the overlapping portion. A method of manufacturing a container, which comprises forming a cylindrical body.