JPH06148816A - Package for photographic film case - Google Patents

Abstract

PURPOSE:To reduce the packaging cost of a photographic film cartridge and to improve the separability of the package and the identification of a kind of photographic film. CONSTITUTION:A case main body 13 made of transparent resin and a cap 14 are covered with the package 18 of a thermally shrunk plastic film. The package 18 has printing for product contents and shielding light from the rear surface side. Thus, the packaging cost is reduced, handleability at the time of taking out a cartridge is improved and moreover, light shielding properties only by the package 18 can be secured.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging body for packaging a photographic film container for accommodating a photographic film cartridge.

[0002]

2. Description of the Related Art Various types of photographic film cartridges are known in which the tip of the photographic film is wound into the main body of the film and the tip of the photographic film is taken out from an outlet formed in the main body of the film during photography.
For example, as described in U.S. Pat. No. 4,834,306 or Japanese Patent Application Laid-Open No. 3-37645 by the applicant of the present invention, even the tip of the photographic film is wound into the main body of the photo film in the unused state, and the film is attached to the camera. A photographic film cartridge has been proposed in which the loading operation can be easily performed without paying attention to the leader portion when the photographic film is loaded. This photo film patrone is loaded into the patrone loading chamber of the camera, and then the spool provided on the patrone main body is rotated by the drive shaft on the camera side so that the tip of the photo film is ejected from the outlet provided on the patrone main body. I try to send it out.

Further, in Japanese Patent Application Laid-Open No. 2-46445,
Before shooting, all the photo film is stored in the main body of the film, but the sprocket that sends out the photo film is built in the main body of the photo film, and the photo film is sent out from the outlet by rotating this. Patrone is proposed. Further, in Japanese Patent Laid-Open No. 2-170156, the photographic film is stored in the main body of the cartridge before photographing, but when the photographic film is loaded into the camera, the photographic film pull-out mechanism provided in the camera causes There has been proposed a photographic film cartridge in which a photographic film is pulled out in a winding direction by engaging with a locking piece.

On the other hand, in the most popular 135 type photographic film cartridge, the leading end of the photographic film projects in advance from the main body of the cartridge as a leader portion. The photographic film cartridge is stored in a plastic moisture-proof case with a cap (hereinafter referred to as P case), and the P case is packaged in a paper outer box for sale. Therefore, when the user tries to load the photographic film on the camera, the cap of the P case is removed after removing the outer case, and then the photographic film cartridge is loaded on the camera. In addition, as a container for a photo film cartridge in which the tip of the photo film is rolled into the main body of the photo film, it has recently been proposed to omit a paper outer box and form a single package of only the P case (Japanese Patent Application No. 2). -255174).

[0005]

However, the above-mentioned packaging form of the photographic film cartridge is inconvenient when quick loading of the photographic film is required, and the outer box is immediately discarded so that it can be saved. From the viewpoint of being unfavorable in terms of resources, various packaging forms of the photographic film cartridge in which the tip of the photographic film is fed by rotating the spool as described above have been studied. For example, if the outer box used for packaging 135 type photo film cartridges is omitted and only the P case is used as a single package, the light shielding is incomplete in the conventional P case, so if it is left outdoors for a long time. There is a possibility that the photographic film may be exposed to external light due to the high-intensity sunlight. If the P case is made completely opaque in order to avoid this problem, the type of the photo film stored in the P case cannot be identified from outside the P case, and the P case also needs a display indicating the type. However, considering that there are various types of photographic film, there are problems in terms of packaging cost and workability.

The present invention has been made in consideration of the above circumstances, and aims to reduce the packaging cost and save resources, and
Photo film patrone can be taken out quickly,
Another object of the present invention is to provide a package for a photographic film container in which the type indication of the photographic film can be identified from the outside of the container without impairing the light-shielding property.

[0007]

In order to achieve the above object, the present invention stores a photographic film cartridge in a moisture-proof container composed of a container body and a cap molded of transparent resin, and In order to shield the formed photographic film discharge port from light, a heat-shrinkable plastic film is used for packaging with the bottom surface of the container body and the cap partially exposed. The light-shielding ability is set to be 1.5 or more in the entire optical density range of 380 to 700 nm. As a result, in addition to the light-shielding ability of the Patrone body itself, a supplementary light-shielding ability is imparted, and even if it is placed in a place with a large amount of light such as a storefront, it does not substantially cause light fog. .

Further, in order to secure the above light-shielding ability,
Printing on the plastic film used as the packaging material is 2
It is preferable that the printing is performed or more, and in order to further improve the unsealing property, a uniaxial stretching method is used as a film forming method of the plastic film, and a ribbon-shaped gripping portion which becomes a finger hook at the time of unsealing is preferably provided.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The photographic film container used in the present invention is used, for example, to store the photographic film cartridge 2 shown in FIG. The photo film cartridge 2 includes a cartridge main body 3 and a spool 4 rotatably incorporated therein.
And a photographic film 5 wound around the spool 4 in a roll shape. The patrone main body 3 includes case bodies 3a and 3b.
By ultrasonic welding. Port portions 8 and 9 are integrally provided on each of the case bodies 3a and 3b, and the front end portions of these serve as discharge ports 11 of the photographic film. Further, a light-shielding telempu 10 is attached to the inner walls of the port portions 8 and 9 to prevent light from entering the cartridge body 3 through the photographic film discharge port 11. In addition, the ISO of the photo film 5 is provided on the outer wall of the case body 3a.
Display stickers 23a, 23 for indicating the sensitivity and the number of shots
b and 23c (not shown) are attached.

Ribs 6 and 7 are integrally formed on the inner walls of the case bodies 3a and 3b, respectively. These ribs 6,7
Is a roll-shaped photographic film 5 when the photographic film 5 is wound up to the tip in the cartridge body 3.
The photo film 5 is prevented from being loosened from the spool 4 by contacting with the outermost periphery of the. The end of one rib 6 connected to the photographic film discharge port 11 is a tip separation claw 6a, and the tip thereof is located near the outermost periphery of the photographic film roll. When the spool 4 is driven in the photo film feeding direction, the rotation of the spool 4 causes the integral flanges 4a, 4
It is transmitted to the roll-shaped photographic film 5 via b. Further, since the ribs 6 and 7 prevent the photographic film from being loosened, the photographic film 5 rotates integrally with the spool 4. In the process of rotating the photo film 5 together with the spool 4, the tip 5a of the photo film 5 is picked up by the tip separating claw 6a. Then, when the spool 4 is further rotated in the same direction, the leading end 5a is sent out from the photographic film discharge port 11 through the space between the tenems 10.

The photographic film cartridge 2 is stored in a photographic film container 12 as shown in FIG. The photographic film container 12 is composed of a container body 13 and a cap 14. The container body 13 is made of polypropylene resin and the cap 14 is made of polyethylene resin. Container body 1
An opening 16 connected to the storage chamber 15 is formed on the upper end side of 3, and the opening 16 can be closed with a cap 14. A groove 17 is formed on the outer periphery of the upper end side of the container body 13, and when closed with the cap 14, the cap 1
The ridge formed on the inner wall of No. 4 fits into the groove 17 without a gap. As a result, the inside of the container body 12 is shielded from the outside air, and moisture or the like does not enter the container body 13.

The opening 16 of the container body 13 allows the photographic film cartridge 2 to be inserted from the axial direction of the spool 4. The shape of the opening 16 is slightly larger than the outer shape of the photographic film cartridge 2, so
The stored photo film cartridge 2 can be moved inside. The container body 13 and the cap 14 are transparent, and the photographic film cartridge 2 housed inside the photographic film container 12 is covered from above and below, when the photographic film container 12 is packaged, from above and below.
The display stickers 23a, 23b and 23c attached to the outer surface of the photo film cartridge 2 can be confirmed.

FIG. 1 shows a photographic film cartridge 2 in which a photographic film cartridge 2 is inserted into a container body 13 and is covered with a cap 14 for sealing, and the entire photographic film container 12 is wrapped in a package 18 made of a heat-shrinkable plastic film. It was done. As the material of the package 18, a polystyrene resin film formed by a uniaxial stretching method is used. As shown in FIG. 3, for example, the length L is 113 mm and the width W is 57 mm, and the long side is convex. A part 19 and a recess 20 are formed. This convex part 1
9 is located on the upper surface of the photographic film container 12 when the photographic film container 12 is packaged, and serves as an opening knob. Since the convex portion 19 and the concave portion 20 have the same shape, it is possible to reduce material waste during material removal.

The packaging body 18 is provided with a display 21 showing the product contents such as ISO sensitivity and the number of images to be photographed from the back side by gravure printing using colors such as gold, black, red, purple, green and white (solid). Is being printed. After the display 21 of the product content is printed, the light-shielding print 22 for giving the packaging body 18 a light-shielding capability is printed on the entire surface of the display 21 in the order of white (solid), silver (solid), and black (solid). It is carried out. The white and silver colors are used to make the printed display 21 of the previously printed product contents look neat, and only black is used for light-shielding printing 22.
The display 21 becomes dark and dirty as a whole.

FIG. 4 and FIG. 5 respectively show a measurement wavelength of 3 for a solid green-printed and light-shielded package.
It is a graph which recorded the result which measured the light absorbency at the time of irradiating with light of 80-900 nm, a horizontal axis shows a measurement wavelength (nm), and a vertical axis shows light absorbency (Abs). From these two graphs, the light-shielding ability by printing shows that the absorbance becomes lower as the measurement wavelength becomes higher. That is, it can be seen that the light blocking ability is lowered.

Table 1 shows that the light shielding ability of the package 18 differs depending on the printing, and shows the absorbance of the package 18 depending on the wavelength of light. The measurement condition is a printing state, and the green solid is a printing of only green, which is a base color of product content printing, and is a numerical representation of the graph of FIG. 4 described above. The light-shielding printing is performed only by light-shielding printing, and is a numerical representation of the graph of FIG. 5 described above. The green solid + light-shielding printing is that the light-shielding printing is performed on the entire surface of the green solid.

[0017]

[Table 1]

The conditions for the light-shielding performance in the present invention are aimed at an absorbance of 1.50 or more, preferably 2.0 or more at a wavelength of light of 380 to 700 nm which is a visible region.
First, at a measurement wavelength of 400 nm, the absorbance exceeds 2.0 under all measurement conditions, which satisfies the target value of the light-shielding ability.
However, when the measurement wavelength is 500 nm or more, it cannot be said that the green solid has a sufficient light-shielding ability because the absorbance cannot exceed 1.50, but when the measurement condition is green solid + light-shielding printing, even if the measurement wavelength is up to 800 nm, it can be measured. Absorbance is 2.0
It can be seen from this table that the necessary and sufficient shading performance is exhibited.

The light-shielding printing as described above and the package 18 cut into a predetermined shape are the margin portions 18 on both short sides.
A and 18b are overlapped and joined with a solvent or an adhesive to form a cylinder as shown in FIG. This tubular package 18
The photographic film container 12 is inserted into the photographic film container 12 and is passed through a heat-shrinking tunnel that uniformly generates heat, so that the package 18 contracts and closely adheres to the photographic film container 12 for packaging. Package 18
The polystyrene film of the above material shrinks rapidly from a temperature of about 105 ° C. or higher, and the degree of shrinkage varies depending on the temperature of the heat shrink tunnel, and shows a maximum shrinkage of about 70% at 160 ° C. However, if the heat shrinking temperature is too high, the photographic film container 12 may be deformed. Therefore, the size of the package 18 should be slightly larger than that of the photographic film container 12 so that the wrapping film 18 can be adhered by a slight shrinkage at a low temperature. It is desirable to do.

A photographic film container wrapped with the above-mentioned package and a photo film container without the package were allowed to stand in sunlight for 1 hour at 120,000 lux for 3 hours, and then the photo film was developed and confirmed. For those who did not wrap, light was observed on the outermost periphery of the photographic film. The person who was packaged did not suffer from light exposure. That is, in the packaging of the photographic film container of the present invention, by packaging the photographic film container with the packaging that has been subjected to the light-shielding printing, even if the photographic film is placed in a place with a large amount of light such as a store, the photo film is not covered with light. It can be prevented from occurring.

The photographic film container 12 described above.
When taking out and using the photographic film cartridge from the package, the wrapping body 1 located at the upper part of the photographic film container 12 is used.
When the convex portion 19 of 8 is picked up and pulled strongly along the outer wall of the container body 13, the package 18 is peeled from the photographic film container 12, and the cap 14 can be opened to take out the photographic film cartridge 2. Further, the peeling of the packaging body 18 has an effect that it is possible to know whether the photographic film cartridge 2 is unused or used.

Another example of a photographic film container using such a package is shown in FIGS. 6 to 7. This is because the opening provided in the container main body 31 and the storage chamber have the same shape as the axial outer shape of the photographic film cartridge 2, and the effect is to regulate the behavior of the photographic film cartridge 2 in the photographic film container 30. However, it is possible to fix the photo film outlet 11 in a fixed direction. Package 3 used for such a photographic film container 30
In FIG. 3, the light-shielding printing 36 is performed only on the portion facing the photo film outlet 11, so that the printing process time and cost can be reduced. As for the method of taking out the photographic film cartridge 2, the convex portion 37 is picked up and peeled off so as to tear it downward as in the above-described embodiment, the cap 32 is opened, and the photographic film cartridge 2 is taken out.

[0023]

As described above, according to the package of the photographic film container of the present invention, light shielding printing is applied to a part or the whole surface of the package, and the package is adhered to the photographic film container by utilizing the heat shrinkage of the plastic film. By packaging and providing a knob for taking out the photo film, the packaging cost can be reduced and resources can be saved, the photo film cartridge can be taken out quickly, and the container body and the cap are made of transparent resin. Since the package does not cover the bottom surface and the top surface of the container, it is possible to provide the package of the photo film container capable of identifying the type indication of the photo film from the outside of the container without impairing the light-shielding property. .

[Brief description of drawings]

FIG. 1 is a perspective view showing the external appearance of a photographic film container that is packaged using a package embodying the present invention.

FIG. 2 is an exploded perspective view of the photographic film container shown in FIG.

FIG. 3 is a development view of the package of the present invention.

FIG. 4 is a graph in which a change in the absorbance due to a change in the wavelength of light is measured by printing a solid green print on the package.

FIG. 5 is a graph in which a black solid light-shielding print is applied to a package and a change in absorbance due to a change in wavelength of light is measured.

FIG. 6 is a perspective view of a photographic film container having another shape, which is packaged using the package of the present invention.

7 is a cross-sectional view of a main part of the photographic film container shown in FIG.

FIG. 8 is an exploded perspective view showing an example of a photographic film cartridge.

[Explanation of symbols]

 2 Photo film patrone 4 Spool 5 Photo film 11 Photo film outlet 12,30 Photo film container 13,31 Container body 14,32 Cap 18,33 Package 19,37 Convex portion 20 Recess 21 Product content printing 22,36 Shading printing 23a, 23b, 23c Display stickers

Claims (3)

[Claims] 1. A film-like packaging body, which comprises a transparent container body and a cap, and which houses a photographic film cartridge inside, and which is covered on the surface of a moisture-proof photographic film container. The packaging body is a photographic film. Is displayed on the screen, has a light absorption of 1.50 or more in the visible light region, and is a shrink film that is heat-shrinked with the cap and bottom of the photographic film container partially exposed. Characteristic photo film container packaging. 2. The package for a photographic film container according to claim 1, wherein the package for the photographic film container has two or more printing layers. 3. The packaging of a photographic film container according to claim 1, wherein the packaging body of the photographic film container uses a uniaxially stretched plastic film as a material and has a holding portion for opening. body.