JP3619918B2 - Packaging for lens unit with lens - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a package for packaging a lens-fitted film unit that is pre-loaded with an unexposed film .
[0002]
[Prior art]
The lens-equipped film unit is shipped with the unexposed film wound on a reel from the cartridge, and the user rolls the exposed film one frame at a time for each shooting, and then develops and prints as it is. Ask a photo shop for this. In the lab, the film is taken out from the lens-equipped film unit sent from the photo shop, but considering the development process, all the film is not taken up inside the cartridge and a part is left outside the cartridge. preferable. Also, some users do not take all frames, but may request development with a few frames left. That is, at this time, a part of the film is wound on the reel.
[0003]
In order to be able to easily take out such a film together with the cartridge, after covering the film light tightly, the cover can be bent and opened from one end so that it can be opened not only to the cartridge but also to the vicinity of the reel. A structured film unit with a lens is known. Such a lens-fitted film unit is shaped so that stress is concentrated by providing a step or the like at a bent portion inside the rear cover so that the rear cover is easily bent.
[0004]
On the other hand, in order to prevent film deterioration due to moisture or the like, the lens-attached film unit is shipped covered with a moisture-proof packaging. This package is a packaged lens unit that has been completed, sealed in a cylindrical shape with both ends open, and then sealed at both ends to make it airtight. Using the hole, it is displayed suspended from a store such as a camera shop.
[0005]
[Problems to be solved by the invention]
FIG. 1 is a perspective view of a conventional lens-equipped film unit as viewed from the rear.
[0006]
Various unit photographing mechanisms are mounted on a unit main body (not shown), and are covered with a rear cover 1 and a front cover 2. The unit main body is previously loaded with an unexposed film in the manufacturing process, but the portion where the film is loaded is held in a light-tight manner by the rear cover 1. Further, a part of the rear cover 1 and the front cover 2 is further covered with a sheet cover 3 formed of a sheet-like member. The rear cover 1 and the front cover 2 have recesses and through-holes on the outer surface due to the internal structure, but the seat cover 3 has a function of hiding these recesses and through-holes, and a film with a lens on the outer surface. The product name of the unit and simple instructions are printed.
[0007]
The film unit with a lens that has been photographed is taken out in the laboratory, but in the example of FIG. 1, the right side surface 1a of the rear cover 1 is hooked using a jig so that it is easily bent. The rear cover 1 is opened as shown in FIG. 2 with the bent portion 1b of the cover 1 as a fulcrum.
[0008]
FIG. 3 shows the rear cover 1 as seen from the inner surface. The rear cover 1 has steps and notches such as 1c, 1d, 1e, and 1f, and can easily be bent at the bent portion 1b due to stress concentration. It is formed to be bent.
[0009]
When the rear cover 1 is bent as shown in FIG. 2 and opened from the right end 1a, the seat cover 3 is broken to the position 3c corresponding to the bent portion 1b of the rear cover 1 along the ridge lines 3a and 3b. In addition, perforations are formed on the ridgelines 3a and 3b of the seat cover 3 so that the breakage is easy.
[0010]
However, since the ridgelines 3a and 3b of the seat cover 3 start to break at the same time from the end portions 3d and 3e, the force required for breaking is dispersed in two places and is not easily broken unless a large force is applied.
[0012]
Next, problems of the conventional package of the lens-equipped film unit will be described.
[0013]
A conventional lens-equipped film unit is packaged and shipped in the shape shown in FIG. The package 20 wraps the completed lens-fitted film unit with a moisture-proof sheet material, and heat-seals it into a cylindrical shape with both ends opened. This seal portion is referred to as a first joint portion 20a. Subsequently, both ends are heat-sealed to form an airtight state. This joint portion is referred to as a second joint portion 20b. Thereafter, a suspension hole 20c is formed in one of the second joint portions 20b, and a hook or the like is passed through the suspension hole 20c at a store such as a camera store, and the package 20 is suspended and displayed.
[0014]
However, the conventional package 20 is heat-sealed as the second joint 20b all around the suspension hole 20c, so that the suspension hole 20c is cracked for some reason, such as rough handling. If entered, the two heat-sealed front and back surfaces may be torn at the same time, hindering suspension.
[0015]
This invention is made | formed in view of this problem , and it aims at proposing the package body of the film unit with a lens provided with the hole for suspension which does not cause trouble in suspension .
[0017]
[Means for Solving the Problems]
The object is to first enclose a film unit with a lens preloaded with an unexposed film in a cylindrical shape using a sheet material, and then continuously bond the sheet material with the inner surfaces of the end portions facing each other. The cylindrical sheet material including the first joint portion located at both outer ends of the lens-fitted film unit is pressed flat to provide a flat portion, and the first joint portion is formed at a predetermined portion of the flat portion. The film unit with a lens is packaged in an airtight state by a second joint part that is joined in a belt shape across the flat part, and the flat located outside the second joint part with respect to the packaged film unit with a lens This is achieved by a packaging body for a lens-equipped film unit, characterized in that a hanging hole, at least part of which is not joined to the portion, is formed.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
[0019]
FIG. 5 is a perspective view of the lens-equipped film unit as viewed from the rear, and FIG. 6 is a view in which the rear cover, which is an exterior member, is opened to take out the film, which is a loading member.
[0020]
In FIG. 5 , the rear cover 1 and the front cover 2 are the same as the conventional one described in FIGS. Further, the seat cover 5 is formed substantially the same as the above-described seat cover 3. However, in the seat cover 5 of the present invention, the lengths of the two ridgelines 5a and 5b to be broken are different. That is, the lengths from the bent portion 5c of the seat cover 5 corresponding to the bent portion 1b of the rear cover 1 to the end portions 5d and 5e starting to break are different. As described above, perforations are formed on the ridge lines 5a and 5b.
[0021]
Accordingly, when the rear cover 1 is bent and opened from the right side surface 1a as shown in FIG. 5, the seat cover 5 first starts to break from the end portion 5d of the ridge line 5a, and then the end portion 5e of the ridge line 5b breaks. As described above, the rupture timing of the ridge line 5a and the ridge line 5b is different, so that only the force for breaking the end portion 5d of the ridge line 5a is required at first, and a double force is applied to the end portion 5d as compared with the prior art. Can do. In other words, the fracture can be started with half the force of the prior art. Note that when the seat cover is broken, a large force is required only when the break starts from the end portion, and a slight force is required after the break starts. In the case of the seat cover 5, the end portion 5e of the ridge line 5b is broken. Even if it will be in the state which does, it does not require 2 times breaking force, and only the sum of the breaking force with respect to the edge part 5e and the small breaking force by the inertia along the ridgeline 5a is sufficient.
[0022]
In the above embodiment, the lower ridge line 5a of the seat cover 5 is longer than the upper ridge line 5b, but it goes without saying that it may be reversed.
[0023]
Further, when the width of the rear cover is smaller than the width of the lens-fitted film unit, two parallel perforations corresponding to the width of the rear cover are provided on the back surface of the seat cover, and the breaking length of the perforations is set as described above. You may change as follows.
[0024]
The sheet cover 5 is generally made of paper, but a resin sheet such as PS may be used.
[0025]
Further, in the present embodiment, the configuration in which the film as the loading member is taken out from the rear cover has been described. However, the present invention is not limited to this, and the configuration is the same when the battery is taken out from the rear cover as the loading member. can do.
[0026]
Further, the exterior member may be a front cover instead of the rear cover.
[0027]
Next, the package of the film unit with lens will be described with reference to FIGS.
[0028]
The sheet material used for the package is a moisture-proof sheet material, for example, a 12 μm thick PET material (polyethylene terephthalate) and a 70 μm thick EVA material (ethylene vinyl acetate) are bonded to both surfaces of a 7 μm thick aluminum foil. The product name is printed on the surface of the PET material, and the printed surface is used on the outside.
[0029]
The procedure for forming the package 30 using this sheet material will be described with reference to FIGS.
[0030]
As shown in FIG. 7, the lens-equipped film unit 10 is mounted on a long sheet material, the lens-equipped film unit 10 is surrounded by the sheet material on both sides, and the inner surfaces of both ends of the sheet material are opposed to each other. Press and heat continuously in a striped pattern to heat seal. The heat-sealed and joined portion is referred to as a first joining portion 30a.
[0031]
Subsequently, as shown in FIG. 8, the cylindrical sheet material including the first joint portions 30a located at both outer ends of the lens-fitted film unit 1 is flattened. This flat portion is referred to as a flat portion 30b. Subsequently, as shown in FIG. 9, a predetermined portion of the flat portion 30b is heat-sealed in the same manner as the first joint portion 30a across the first joint portion 30a, and this is referred to as a second joint portion 30c. In this manner, the lens-fitted film unit 10 is packaged in an airtight state and cut into packs.
[0032]
The pitch of the stripes in the heat seal is about 1 mm, and the heat seal is performed at a temperature of a few hundred degrees.
[0033]
Thereafter, a hanging hole 30d is formed in the flat portion 30b located outside the second joint portion 30c with respect to the packaged film unit 10 with a lens.
[0034]
When drilling the long hole 30d for suspension, the first joint portion 30a may be cut together with the flat portion 30b, or only the flat portion 30b may be cut at a position that does not reach the first joint portion 30a. .
[0035]
In this manner, a package of the lens-attached film unit as shown in FIG. 9 is completed, and is displayed by being suspended in the suspension hole 30d by a hook or the like at a store such as a camera store. The flat portion 30b at the bottom of the package 30 is not necessary and is bent.
[0036]
Furthermore, you may provide the 3rd junction part 30e which heat-sealed the flat part 30b separately from the 2nd junction part 30c.
[0037]
An example of this is shown in FIGS. 10 to 12, in which FIG. 10 is a diagram in which a third joint 30e is provided in parallel to the second joint 30c, and FIG. 11 is a third parallel to and orthogonal to the second joint 30c. The figure which provided the junction part 30e, FIG. 12 is the figure which provided the 3rd junction part 30e orthogonally to the 2nd junction part 30c.
[0038]
In the case of FIG. 12, the third joint portion may be either the left or the right.
[0039]
Further, in the actual heat sealing process, the second joint 30c and the third joint 30e are joined at the same time.
[0041]
【The invention's effect】
According to the package of the lens-attached film unit of the present invention, even if the suspension hole is cracked for some reason, at least a part of the suspension hole is not joined . it is rare to crack in two both on the front and back, does not occur that interfere with the hanging. Moreover, when the upper part is not joined, the operation | work which tears a package body in order to take out a film unit with a lens becomes easy.
[Brief description of the drawings]
FIG. 1 is a perspective view of a conventional lens-equipped film unit as viewed from the rear.
FIG. 2 is a perspective view in which a rear cover of a conventional film unit with a lens is opened.
FIG. 3 is a view of the rear cover as viewed from the inner surface.
FIG. 4 is a view of a packaging body of a conventional film unit with a lens.
FIG. 5 is a perspective view of the lens-fitted film unit of the present embodiment as viewed from the rear.
FIG. 6 is a perspective view in which a rear cover of the lens-fitted film unit of the present embodiment is opened.
FIG. 7 is a view in which a lens-fitted film unit is surrounded by a sheet material.
FIG. 8 is a diagram of a flat portion of the package.
FIG. 9 is a perspective view of a completed package in the present embodiment.
FIG. 10 is a view in which a third joint is added.
FIG. 11 is a view in which a third joint is added.
FIG. 12 is a view in which a third joint is added.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rear cover 1b Bending part 3, 5 Sheet cover 3a, 3b, 5a, 5b Edge line 10 Film unit 20 with a lens Package 20a, 30a First joint part 20b, 30c Second joint part 20c, 30d Hanging hole 30b Flat Part 30e third joint part

Claims (1)

A lens unit pre-loaded with an unexposed film is enclosed in a cylindrical shape by using a sheet material, and then a first bonding portion is formed by continuously bonding the inner surface of the end portion of the sheet material to face each other, and the lens A cylindrical sheet material including the first joint portion located at both outer ends of the film unit is flatly pressed to provide a flat portion, and a belt-like shape is formed across the first joint portion at a predetermined portion of the flat portion. The lens-attached film unit is packaged in an airtight state by the second joint portion joined to the lens, and at least one of the flat portions positioned outward from the second joint portion with respect to the packaged film-attached film unit. A packaging body for a lens-fitted film unit, characterized in that a hanging hole is formed in which no part is joined .

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