JPH0584960U - Film storage container - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a film container in which the work of removing the lid from the container body can be easily performed. [Constitution] A container body having a recess formed in an inner peripheral portion of a side wall,
A film storage container comprising: a lid body having a convex portion formed on an outer peripheral portion of a side wall corresponding to the concave portion, wherein a concave portion is formed on an inner peripheral portion of the side wall corresponding to the convex portion of the lid body. A film storage container.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a film storage container.

[0002]

[Background of the invention]

 The patrone loaded with photographic film is sold in a film storage container in order to prevent damage due to impact and deterioration due to moisture. Then, the cartridge is taken out from the film storage container and loaded into the camera.

This film storage container has conventionally been constructed as shown in FIG. In FIG. 4, reference numeral 21 denotes a substantially cylindrical container body in which an annular recess 22 is provided inside the upper side wall, and a cartridge 23 is accommodated in the container body 21 as shown by an imaginary line. Reference numeral 24 denotes a lid body. The lid body 24 has an edge portion 25 and a sleeve 26 each having an outer diameter slightly larger than the outer diameter of the container body 21. An annular portion is provided at a substantially middle portion of the sleeve 26. An annular convex portion 27 corresponding to the concave portion 22 is provided. A groove 28 is formed along the vertical direction on the outer periphery of the side wall of the edge portion 25.

Then, in the work of taking out the cartridge 23 from the film storage container, a part of the lid body 24 is deformed by applying a force to the edge portion 25 of the lid body 24, so that the annular concave portion 22 and the annular convex portion. It is performed by releasing the fitting with 27. However, there is a problem in that this lid-opening work requires power and the workability is poor.

[0005]

[Disclosure of device]

 As a result of intensive research on the above-mentioned problems, the presence of the annular convex portion formed due to the fitting structure between the container body and the lid body makes the wall portion thicker, and thus the rigidity is increased. It has become clear that it is larger than necessary and it is difficult to open the lid. As a result of further studies based on these findings, if the groove is formed in the inner peripheral portion of the side wall of the portion where the annular convex portion of the lid is provided, the wall thickness becomes thinner. It has been found that it will be easier to bend and open the lid.

The present invention has been accomplished based on the above knowledge, and an object of the present invention is to provide a film container in which the lid body can be easily removed from the container body. An object of the present invention is a film storage container comprising a container body having a concave portion formed on the inner peripheral portion of the side wall and a lid body having a convex portion formed on the outer peripheral portion of the side wall corresponding to the concave portion. The film accommodating container is characterized in that a concave portion is formed in an inner peripheral portion of a side wall of the lid body corresponding to the convex portion of the lid body.

As the constituent material of the container body, low-density polyethylene, blend polymer of low-density polyethylene and high-density polyethylene, copolymer of ethylene and α-olefin, polyethylene terephthalate or vinylidene chloride-based resin and polyolefin-based resin. Examples thereof include a composite material with a resin. Examples of the low-density polyethylene include Asahi Kasei Suntech L (MA-8725, LM-8825), Idemitsu Polyethine L (5064G, 2074G, 0464G), Sumikasen L (Sumitomo Chemical, GA802, GA804, GA805, CS5007), Mitsubishi Polyethy. LL (UJ960, UJ580, UJ480, UJ990, UJ790, X-725), Tosoh (M-70) and the like can be mentioned. As the high-density polyethylene, for example, Asahi Kasei Suntech HD (J-300, J-310, J-320, J-340), Idemitsu Polyethylene HD (110J, 120J, 130J, 210J), Mitsubishi Polyethylene HD (JX-10, JY-20, JX-20, JX-22), Nippon Petrochemical (E- 870), Tonen Petrochemical (B-5751) and the like, and α- Examples of the reffin include butene-1, hexene-1, 4-methylpentene-1 and octene-1, and examples of the vinylidene chloride resin include vinylidene chloride-acrylonitrile copolymer and vinylidene chloride. Examples thereof include carboxylic acid ester copolymers (for example, Saran MA manufactured by Asahi Dow Co., Kureharon DOB manufactured by Kureha Chemical Industry Co., Ltd., and Aron LF100 manufactured by Toagosei Co., Ltd.). There are high molecular weight polyethylene, polypropylene, poly-4-methyl-pentene 1, polybutylene, ethylene-vinyl acetate copolymer and the like.

As the constituent material of the lid, for example, Asahi Kasei Suntech LD (M-6545, M-6520, M-6525, L-6810), Sumikasen (Sumitomo Chemical, G806), UBE Polyeth (J-3519, J- 5019) and the like, such as low density polyethylene. When molding a film storage container (container body and lid) using the above resins, various antistatic agents such as conductive substances and surfactants, fatty acids, fatty acid metal salts, fatty acid compounds such as fatty acid amides Various lubricants such as higher alcohols, fatty acid esters, waxes, and antioxidants are used. For example, by improving the injection moldability, especially the fluidity of the resin, and forming a thin film on the surface by utilizing the property of bleeding out, the surface is less likely to be scratched and slippery. In order to improve releasability from the mold, prevent static electricity generation, and prevent blocking between container bodies, for example, oleic acid amide lubricant, erucic acid amide lubricant, stearic acid Fatty acid amide lubricants such as amide lubricants, stearyl erucic acid amide lubricants, bis fatty acid amide lubricants and behenic acid amide lubricants are added. In the case of an oleic acid amide-based lubricant having a large lubricity effect, the addition amount may be 0.01 to 1.0 wt%.

Further, various inorganic and organic nucleating agents can be added in order to improve the crystallization rate and the physical properties. By improving the rigidity of the resin composition and increasing the crystallization temperature, the nucleating agent does not easily cause bottom sinking or buckling even if the cooling time is shortened, and when a large amount is put in the hopper, container, etc. immediately after molding. However, it has the effect of making it difficult to deform. In addition, it is possible to improve wear resistance, and it exerts a great effect in high-speed processing and idling process. As the nucleating agent, various kinds of organic and inorganic ones can be used. Typical examples of the preferable organic nucleating agent exhibiting the effect of addition without adversely affecting the photographic film include, for example, 1.3. , 2.4, dibenzylidene sorbitol, in which 1 mol of sorbitol is combined with 2 mol of benzaldehyde. The benzene ring may have a substituent such as methyl, ethyl, butyl, lauryl or stearyl. In addition, high-purity alkyl-substituted dibenzylidene sorbitol, 1,3,2,4, di (methylbenzylidene) sorbitol obtained by condensation reaction of 2 moles of trialdehyde and 1 mole of sorbitol, and 1,3,2,4, bis ( Methylbenzylidene) sorbitol and 1,3,2,4, bis (ethylbenzylidene) sorbitol, 1,3,2,4, dibenzylidene sorbitol and the like, coated with pure higher fatty acid, are available. The addition amount of the nucleating agent is preferably 1.0% by weight or less. As a method of blending the nucleating agent into the resin composition, there are a dry blending method, a compounding method, a masterbatch method and the like, and it is advisable to add a small amount of a dispersant or a wetting agent for blending. Examples of the dispersant include carboxylic acid anhydride and higher fatty acid. As the wetting agent, a plasticizer such as DOP or DHP can be used.

Various surfactants can be added in order to improve the antistatic property of the film container. For example, polyethylene glycol fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene aliphatic alcohol ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene glycerin fatty acid ester, polyoxyethylene aliphatic amine, sorbitan monofatty acid ester, Fatty acid pentaerythritol, aliphatic alcohol ethylene oxide adduct, fatty acid amino or fatty acid amide ethylene oxide adduct, alkylphenol ethylene oxide adduct, alkylnaphthol ethylene oxide adduct, polyhydric alcohol partial fatty acid Ethylene oxide adduct of ester, other nonionic surfactants described in JP-B-63-26697, sodium ricinoleic acid sulfate ester , Various fatty acid metal salts, ricinoleic acid ester sulfate soda salt, sulfated ethylaniline oleate, olefin sulfate ester salts, oleyl alcohol sulfate ester soda salt, alkyl sulfate ester salt, fatty acid ethyl sulfonate, alkyl sulfonate , Alkyl naphthalene sulfonates, alkyl benzene sulfonates, succinate sulfonates, phosphate ester salts and other anionic surfactants, primary amine salts, tertiary amine salts, quaternary ammonium salts Cationic surface active agents such as salts and pyridine derivatives, amphoteric surface active agents such as carboxylic acid derivatives, imidazoline derivatives and betaine derivatives are used.

Further, phenolic antioxidants, ketone amine condensation antioxidants, allylamine antioxidants, imidazole antioxidants, phosphite antioxidants, thiourine antioxidants, sulfur antioxidants In addition, the stability of the resin can be greatly improved by adding 1.0% by weight or less of an antioxidant useful for air oxidation, for example, a phenolic antioxidant.

[0012] The film storage container body is made of the resin as described above, and in addition to the injection molding method using a single-stack mold, it is also a multi-stage injection blow molding method, a vacuum injection molding method in a mold, a stack mold, or the like. It is molded using an injection molding method using a mold. The lid is molded by an injection molding method using a multistage mold such as an injection blow molding method, an in-mold vacuum injection molding method or a stack mold, in addition to an injection molding method using a single-stack mold.

[0013]

【Example】

 1 to 3 show an embodiment of a film storage container according to the present invention, FIG. 1 is an external perspective view of the film storage container, FIG. 2 is a sectional view of the main body of the film storage container, and FIG. It is sectional drawing of the cover of a film storage container. In each of the drawings, A is a container body having a substantially cylindrical shape, 1 is a side wall of the container body A, 2 is a thick part formed at the upper end of the side wall 1, and this thick part 2 is formed. An annular concave portion 3 is formed on the inner wall side of the formed portion. The portion of the side wall 1 where the wall thickness changes is configured to gradually change.

Reference numeral 4 denotes a convex portion formed on the bottom of the container main body A. Due to the presence of this convex portion, the cartridge is slightly lifted from the bottom of the container, so that a large impact is not applied to the cartridge. ing. B is a lid, which is joined by fitting the lid B to the container body A, and a film storage container is constituted by both. Reference numeral 5 denotes a sleeve that is positioned inside the container body A when the lid B is fitted to the container body A. The sleeve 5 is fitted into the annular recess 3 of the container body A at a position corresponding to the lowermost end of the sleeve 5. The annular convex portion 6 is configured. As shown in FIG. 3, the annular convex portion 6 is formed outside the sleeve 5, and an annular groove 7 is formed inside the sleeve 5 so as to correspond to the annular convex portion 6. Therefore, even if the annular convex portion 6 is formed, the wall thickness at this portion is not thick due to the formation of the annular groove 7. For example, the thickness of the sleeve 5 near the annular convex portion 6 is designed to be approximately the same.

Reference numeral 8 denotes a bottom surface portion of the sleeve 5, and a length from the bottom surface portion 8 to a lower end of an edge portion 9 which will be described later is a bottom surface portion when the cartridge is housed in the container body A and the lid body B is fitted. It is constructed so that there is a slight gap between the 8 and the cartridge. Reference numeral 9 denotes an edge portion formed on the upper end side (free end side) of the sleeve 5 in the lid B. When removing the lid B from the container body A, the outer diameter of the edge portion 9 is configured to be larger than the outer diameter of the upper end portion of the container body A so that an upward force can be easily applied to the peripheral edge portion of the edge portion 9. Has been done. Then, when an upward force is applied to the peripheral portion of the edge portion 9, the sleeve 5 elastically deforms in response to this, and the fitting relationship between the annular convex portion 6 and the annular concave portion 3 is partially released, and The lid B is detached from the container body A by advancing.

When the lid B is detached from the container body A, the outer periphery of the side wall of the edge portion 9 has a reverse taper shape in order to increase the contact area with the finger pad and to make the contact angle favorable. It has a shape such that the outer diameter of the edge becomes larger toward the upper side), and it increases the friction with the finger pad to prevent slipping and makes the sleeve 5 easier to bend, and the reverse staircase-like non-slip The part 10 is configured.

That is, since the outer periphery of the side wall of the edge portion 9 is formed in the reverse taper shape and the anti-stepped anti-slip portion 10 is formed, the force applied to the lid B is applied to the edge portion 9. It has a large area and can work reliably, so that the lid B can be easily removed. Reference numeral 11 denotes a concave portion (annular concave portion) formed on the inner peripheral portion of the side wall of the edge portion 9. With this, the thickness of the outer peripheral portion of the side wall of the edge portion 9 formed in the reverse taper shape is thinned to reduce the edge portion. The rigidity of the sleeve 5 is not too large, and when an upward force is applied to the peripheral portion of the edge portion 9, the sleeve 5 is easily elastically deformed in response to this.

Reference numeral 12 denotes a top plate portion formed by projecting the bottom surface portion 8 of the sleeve 5 upward in the middle, and is configured so that the shaft center of the cartridge is positioned correspondingly. Therefore, it is not necessary to increase the height of the container body A more than necessary, and the size can be reduced. In the film storage container configured as described above, when taking out the cartridge, when a force is applied to the edge 9 of the lid B with the thumb or the like in the direction of the arrow in FIG. Since it is formed in the reverse taper shape, the area of contact with the finger pad is large, the contact angle is good, and the force can be effectively applied to the edge portion 9. In particular, since the step-like non-slip portion 10 is provided on the outer periphery of the side wall of the edge portion 9, the finger pad is securely hooked on the lid B to prevent slipping, and the edge portion 9 is effectively pressed. Will be added.

Then, the force applied to the edge portion 9 in the direction of the arrow bends the sleeve 5, and the fitting relationship between the annular convex portion 6 and the annular concave portion 3 is partly disengaged, so that the work can be further advanced. As a result, the lid B can be removed from the container body A. At this time, since the concave portion 11 is formed on the inner peripheral portion of the side wall of the edge portion 9, the rigidity of the sleeve 5 is so small that the sleeve 5 is easily bent, and the annular convex portion 6 and the annular concave portion 3 are fitted together. It is easy to remove and the workability of removing the lid B from the container body A is excellent.

Further, since the annular groove 7 is formed on the inner surface side of the portion where the annular convex portion 6 is formed, even if the annular convex portion 6 is formed, the wall thickness at this portion is not thick. The rigidity of the sleeve 5 is so small that the sleeve 5 is easily bent, the annular convex portion 6 and the annular concave portion 3 are easily disengaged, and the workability of removing the lid B from the container main body A is excellent.

On the contrary, the work of fitting the lid body B into the container body A becomes easy. Further, since the annular convex portion 6 that fits into the annular concave portion 3 of the container main body A is formed at the position corresponding to the lowermost end of the sleeve 5, the storage container can be downsized, and the cost can be reduced because the material is saved. Further, it is convenient to carry, and the strength of the storage container is large against the load applied in the vertical direction, and damage is unlikely to occur.

[0022]

【effect】

 The concave portion of the container body and the convex portion of the lid body can be easily disengaged, and the work of removing the lid body from the container body becomes easy.

[Brief description of drawings]

FIG. 1 is a perspective view of a film storage container according to the present invention.

FIG. 2 is a sectional view of a container body of a film storage container according to the present invention.

FIG. 3 is a cross-sectional view of a lid of a film storage container according to the present invention.

FIG. 4 is a cross-sectional view of a conventional film storage container.

[Explanation of symbols]

 A container body B lid 1 side wall 3 annular recess 5 sleeve 6 annular projection 7 annular groove

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location G03C 3/00 N

Claims (1)

[Scope of utility model registration request] 1. A film storage container comprising: a container body having a concave portion formed on an inner peripheral portion of a side wall; and a lid body having a convex portion formed on an outer peripheral portion of the side wall corresponding to the concave portion. A film storage container, wherein a concave portion is formed on an inner peripheral portion of a side wall of the lid body corresponding to the convex portion of the lid body.