JPH0712430B2 - Deodorant for photographic light-sensitive material and packaging material for photographic light-sensitive material having the same - Google Patents

Description

The present invention relates to a deodorant for photographic light-sensitive materials and a packaging material for photographic light-sensitive materials using the deodorant. More specifically, the present invention relates to a deodorizing agent for a photographic light-sensitive material that removes an unpleasant odor generated by the photographic light-sensitive material or a packaging material for a photographic light-sensitive material, and a packaging material for a photographic light-sensitive material using the deodorant.

[Prior Art] Japanese Patent Application Laid-Open No. 63-104648 discloses a deodorant for foods.

The photographic light-sensitive material is packaged in various forms such as a bag, a plastic case, and a composite container depending on the type.
Such a package has a perfect light-shielding property so that the contained photographic light-sensitive material is not exposed to light, and vapor and gas that prevent harmful gases such as water vapor from entering the inside. Has barrier properties.

By the way, photographic light-sensitive materials contain substances that give unpleasant odors such as ammonia, phenol and amine, and various oxidizing / reducing substances (various aldehydes, ammonia, sulfurous acid gas, propylene oxide) are contained in packaging materials such as paper. , Ethylene oxide, chlorine, etc.) are included.

Therefore, if the photographic light-sensitive material is kept in a hermetically-sealed state for a long period of time, the substance giving offensive odor emitted from the photographic light-sensitive material and the packaging material is gradually accumulated in the hermetically-sealed package without being released to the outside. When unsealed and taking out the photographic light-sensitive material, the substance accumulated in the inside and having a high concentration was released, which was uncomfortable.

Further, if the accumulated substance is a substance having a bad influence on the photographic light-sensitive material, the quality of the photographic light-sensitive material may be deteriorated.

[Problems to be Solved by the Invention]

However, heretofore, no measures have been taken for substances giving offensive odor generated from such photographic light-sensitive materials or packaging materials for photographic light-sensitive materials.

Therefore, the present inventor has diligently studied a technique in which an unpleasant odor does not occur even when the photographic light-sensitive material is hermetically sealed for a long period of time,
It has been found that an unpleasant odor generating substance can be efficiently removed by adding a deodorant to the packaging material for the photographic light-sensitive material. However, since photographic light-sensitive materials are adversely affected by various substances on photographic properties, it has been necessary for deodorants to be those capable of removing unpleasant odor-producing substances without adversely affecting photographic properties. The present inventor has conducted various studies on substances satisfying the above two conditions, and has found that organic carboxylic acids and the like satisfy the two conditions and is suitable, and completed the present invention.

[Means for Solving the Problems]

The deodorant for photographic light-sensitive materials of the present invention is 1 of an organic carboxylic acid, a mixture of an organic carboxylic acid and a zinc compound, and a mixture of an organic carboxylic acid, a zinc compound and an aluminum compound.
It is configured with the above features.

A packaging material for photographic light-sensitive materials using the deodorant for photographic light-sensitive materials of the present invention is characterized by having the deodorant for photographic light-sensitive materials according to claim (1).

Examples of the deodorant for the photographic light-sensitive material of the present invention include organic carboxylic acids, mixtures of organic carboxylic acids and zinc compounds, and mixtures of organic carboxylic acids, zinc compounds and aluminum compounds.

Examples of the organic carboxylic acid include aliphatic polycarboxylic acids, aromatic polycarboxylic acids, and reaction products of these aliphatic or aromatic polycarboxylic acids with polyhydric alcohol compounds, and acidic polyester compounds having a carboxyl group at the end.

Examples of the aliphatic polycarboxylic acid include oxalic acid, malonic acid,
Di- or tricarboxylic acids such as succinic acid, adipic acid, fumaric acid, methylfumaric acid, maleic acid, methylmaleic acid, itaconic acid, acetylenic acid, malic acid, methylmalic acid, citric acid, isocitric acid, mesaconic acid, citraconic acid or There are salts thereof, and particularly preferred are citric acid, fumaric acid or salts thereof.

Aromatic polycarboxylic acids include phthalic acid, terephthalic acid, isophthalic acid, trimellitic acid, pyromellitic acid,
There are aromatic carboxylic acids such as benzenehexatricarboxylic acid, naphthalenedicarboxylic acid, naphthalenetricarboxylic acid, naphthalenetetracarboxylic acid and azobenzenetetracarboxylic acid, or their anhydrides, and particularly preferred are benzenetricarboxylic acid and trimellitic acid. .

Examples of the acidic polyester compound having a terminal carboxyl group include a polyester having a terminal carboxyl group obtained by reacting a polycarboxylic acid such as phthalic acid with a polyhydric alcohol such as ethylene glycol and diethylene glycol, and an acidic cellulose derivative modified with a polycarboxylic acid. .

Examples of the zinc compound used in combination with the organic carboxylic acid include zinc oxide, zinc chloride, zinc sulfate, zinc phosphate, inorganic zinc salts of zinc carbonates and zinc citrate, and organic zinc salts of zinc fumarate. Therefore, the range of organic carboxylic acid: zinc compound = 1: 0.1 to 3.0 parts by weight is preferable.

The aluminum compound used in combination with the organic carboxylic acid and the zinc compound is aluminum sulfate, potassium, etc., and organic carboxylic acid: zinc compound: aluminum compound = 1: 0.1: 0.1 to 1: 3: 3. A range of parts by weight is preferred.

The packaging material for a photographic light-sensitive material of the present invention has the deodorant for a photographic light-sensitive material as described above. Examples of the packaging material for the photographic light-sensitive material include the following.

1. Light-shielding container Magazine, instant film pack, disk film shell, cassette, cartridge, etc. 2. Film winding core Spool, reel, core, paper core, core reinforcing cap, etc. 3. Light-shielding paper Leader paper, pigment coating Paper, neutral paper, dust-free paper, synthetic paper, non-woven fabric, etc. 4. Paper containers Paper boxes (inlay type, lid fitting type), cardboard boxes, etc. 5. Light-shielding bag Flat bag, self-standing bag, gusset bag, etc. 6. Cushioning material sandwich Paper, foam sheets, air caps, protective papers, etc. 7. Adhesives Adhesives, adhesives, hot melts, adhesive tapes, etc. 8. Moisture-proof materials, waterproof materials 9. Marking materials Ink, labels, etc. 10. Single layer film inflation Film, T-die film, casting film, extrusion coated film, stretch film, uniaxially stretched film, biaxially stretched film, etc. 11. Laminated film coextrusion Film, blocking laminated film, cross laminated film, etc. 12. Corrugated cardboard 13. Light-shielding material Ribbon, curtain, light-shielding film, light-shielding pad, etc. 14. Plastic case Container for photographic film cartridge and its cap, hinged case for microfilm, instant film A case with hinges, a plastic case for movies, etc. In order to have a deodorant for a photographic light-sensitive material in such a packaging material for a photographic light-sensitive material, it suffices if it has a state capable of removing an unpleasant odor in a sealed packaging state. There are various modes depending on the material and shape of each packaging material. For example, in the case of paper, it may be added in the form of papermaking at the time of papermaking, used between paper and paper, between paper and flexible sheet, mixed in the adhesive layer, or applied to the surface after papermaking. If it is a plastic film, plastic sheet, etc., it is applied to the surface or mixed in a resin. If it is a plastic case or the like, it may be mixed with resin or the deodorant for photographic light-sensitive materials may be provided in a capsule, bag or sheet.

As a method for applying the deodorant coating solution to the above paper, plastic film, etc., spray coating, dipping, size press, size bath, AKC, curtain coating, extrusion lamination, gate roll coating, gravure roll coating, bar coating method Etc.

As the coating liquid, in addition to an aqueous solution, an emulsion liquid such as an ethylene vinyl acetate copolymer, polyvinyl acetate, ethylene, an ethyl acrylate copolymer, polyurethane, a vinyl acetate-acrylic acid ester copolymer, or a thermoplastic resin solution. A dispersion solution using a polymer, various adhesives, adhesives, and latex liquids of various synthetic rubbers and natural rubbers is used.

[Action]

In the present invention, the organic carboxylic acid makes ammonia, phenol, amine, various aldehydes, sulfurous acid gas, propylene oxide, ethylene oxide, chlorine gas, etc. into substances that do not emit an unpleasant odor by the oxidation / reduction action, and zinc compounds and aluminum compounds. Promotes the oxidation / reduction action of the organic carboxylic acid, as well as making ammonia or the like into a substance which does not give off an unpleasant odor by itself.

〔Example〕

An embodiment of the packaging material for a photographic light-sensitive material having the deodorant for a photographic light-sensitive material of the present invention will be described with reference to FIG.

In this figure, reference numeral 1 is a deodorant layer 2 made of paper in which a deodorant 2 for a photographic light-sensitive material is added, and a paper 3 which does not adversely affect the photographic light-sensitive material is adhered to both sides of the deodorant layer 2. ing. The deodorant layer 2 may be composed of only the deodorant, or may be a composition in which another substance such as an adhesive layer is mixed.

2 and 3 are cross-sectional views of a film cartridge container as another embodiment.

In these figures, reference numeral 5 is a container body, reference numeral 6 is a container cap, and a deodorant sheet 7 containing the deodorant 2 is laid and fixed on the bottom of the container body 5, and the deodorant 2 is attached to the back surface of the container cap 6. The deodorizing capsule 8 in which is stored is fixed.

FIG. 4 is a perspective view of a polyolefin resin-made hinged hermetically sealed container used for other embodiments such as a micro negative film hermetically shielded container and an instant photographic film container.

In this figure, reference numeral 10 is a body, reference numeral 11 is a lid integrally provided with the body 10, and a deodorant sheet 12 containing a deodorant 2 is laid and fixed to the bottom of the body 10. .

FIG. 5 is a perspective view of another embodiment of the photosensitive material storage magazine in a partially opened state.

In this figure, reference numeral 14 is a container body, and this container body 14
A deodorizing paper 15 coated with a deodorant solution is attached to the inner surface of the, and a light-shielding telem cloth 17 is attached to the outlet of the rolled photosensitive material 16. Reference numeral 18 denotes a deodorizing paper core that supports the on-roll photosensitive material 16, and the surface of the deodorizing paper core 18 is coated with a deodorant solution. The paper core may have a structure in which a deodorant bag or capsule is placed in the space of the plastic core.

Next, experimental results showing the characteristics of the product of the present invention will be described.

Inventive product I 85% by weight of polyvinyl acetate emulsion having a concentration of 5%. After applying a coating solution consisting of 5% by weight of trimellitic acid and 10% by weight of zinc oxide to the surface and inner surface of a paper core with an inner diameter of 76 mmφ made of unbleached kraft paper at a rate of 20 cc / m ² , then 70
It was dried at ℃ for 2 hours to obtain a deodorizing paper core.

A roll-shaped color photographic paper was wrapped around the deodorant paper core, stored in a moisture-proof light-shielding bag, sealed, and then left indoors for one month.

When it was opened one month after leaving it for a while, it was deodorized to the extent that the conventional odor could hardly be perceived.

Inventive product II A coating solution comprising 80% by weight of a modified starch solution having a concentration of 6%, 10% by weight of fumaric acid, and 10% by weight of zinc carbonate is applied to unbleached kraft paper at a rate of 30 cc / m ^{2 by} a gate roll application method. Then
A light-shielding container having the structure shown in FIG. 6 was prepared from the paper on which this coated paper was pasted.

Roll-shaped color photographic paper was loaded into this light-shielding container to prepare a minilab magazine, and this magasin was housed in a moisture-proof light-shielding bag and sealed, and then left indoors for one month.

When it was opened one month after leaving it for a while, it was deodorized to the extent that the conventional odor could hardly be perceived.

〔The invention's effect〕

Since the present invention is configured as described above to deodorize various unpleasant odors, it is possible to remove the unpleasant sensations and improve the commercial value of the sealed product. Further, since the harmful gas that adversely affects the photographic light-sensitive material is also absorbed and rendered harmless, the quality deterioration of the photographic light-sensitive material can be prevented. Furthermore, cheap unbleached kraft paper and waste paper that could not be used because they generate harmful gas can also be used,
A packaging material for a photographic light-sensitive material can be provided at low cost.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a layer structure of a paper for deodorizing a photographic light-sensitive material of the present invention, and FIGS. 2 and 3 are layer structures applied to a container body for a photographic film cartridge and a cap. 4 is a perspective view applied to a plastic container with a hinge used as a container for micro negative film or a container for instant photographic film, and FIG. 5 is a perspective view of a partially opened state of a photosensitive material storage magazine. Is. 1 ... Deodorant layer, 2 ... Deodorant for photographic light-sensitive material 5 ... Container body, 6 ... Container cap 7 ... Deodorant sheet, 8 ... Deodorant capsule 12 ... Deodorant sheet, 15 ... Deodorant paper 18 …… Deodorant paper core

Claims (2)

[Claims] 1. A deodorant for a photographic light-sensitive material comprising at least one of an organic carboxylic acid, a mixture of an organic carboxylic acid and a zinc compound, and a mixture of an organic carboxylic acid, a zinc compound and an aluminum compound. 2. A packaging material for a photographic light-sensitive material, which comprises the deodorant for a photographic light-sensitive material according to claim 1.