JPH06161039A - Molded goods for photographic sensitive material and packaging goods for photographic sensitive material using the same - Google Patents

Abstract

PURPOSE:Not to exert bad influence to a printing property of the photographic sensitive material and to make dis-persibility of a light shielding material good and not to generate blister even when much light shielding material is added in a molded goods for a photographic sensitive material, such as packing film for photographic sensitive material, container for photographic film, cartridge for photographic film, spool for photographic film, etc. CONSTITUTION:The light shielding film for photosensitive material is formed with a single layered film only consisting of the a light shielding thermoplastic resin film layer 1a. The light shielding thermoplastic resin film layer 1a consists of a light shielding thermoplastic resin compsn. contg. at least a light shielding material which is surface-treated with a surface treating material and an oxidation preventing agent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a molded article for a photographic light-sensitive material, and more particularly, to a photographic property containing at least a surface-treated light-shielding substance, a phenolic antioxidant and at least one thermoplastic resin. The present invention relates to a molded product for a photographic light-sensitive material, which has excellent light-shielding properties and appearance.

[0002]

2. Description of the Related Art Conventionally, as a molded article for a photographic light-sensitive material,
A container body for a film cartridge has been proposed (Japanese Utility Model Publication No. 2-23336). The container body is a container body for a film cartridge containing 0.1 to 3% by weight of a light-shielding substance in a polypropylene resin having special physical properties, which can shorten the injection molding cycle, greatly reduce molding failures, and reduce drop strength. It is an excellent product that can be greatly improved.

As another molded article for a photographic light-sensitive material, a film for packaging a light-sensitive substance has been proposed (Japanese Patent Publication No. 2700/1990).
Issue). This film is a film for packaging a light-sensitive material having at least one light-shielding film comprising a polyethylene-based polymer and 1% by weight or more of a light-shielding substance, and 50% or more by weight of all polyethylene-based polymer is an L-LDPE resin. , Physical strength, suitability for heat sealing, etc. are excellent.

[0004]

However, in the case of the film partrone container body, when the amount of the light-shielding substance added is increased, spots (insoluble mass) are generated due to poor dispersion of the light-shielding substance and the drop strength is lowered. And the photographic properties are further deteriorated (fogging and sensitization are generated), and it is particularly difficult to put it into practical use as a container body for recent high-speed photographic negative films (ASA 100 or more). Further, the above-mentioned film for packaging a light-sensitive substance has a problem in that when the content of the light-shielding substance is increased, the photographic properties are adversely affected, and that spots are often generated due to poor dispersion, resulting in poor light-shielding properties due to pinholes.

The present invention, while ensuring the excellent points of the molded articles described in Japanese Utility Model Publication No. 2-333236 and Japanese Patent Publication No. 2700, etc., protects from light even when the amount of the light-shielding substance is increased. Molded products for photographic light-sensitive materials (film molded products, injection molded products, vacuum products) that have good dispersibility of functional substances, small decrease in physical strength, good photographic properties, and excellent appearance without the appearance of spots. The purpose is to provide molded articles, etc.).

[0006]

[Means for Solving the Problems] The inventors of the present invention have conducted extensive studies to achieve the above object, and found that an excellent effect can be obtained if a light-shielding substance is surface-treated and an antioxidant is used in combination. The present invention has been completed. That is, the molded article for photographic light-sensitive material of the present invention is characterized by being formed of a thermoplastic resin containing at least a light-shielding substance surface-treated with a surface-treatment substance and an antioxidant.

Examples of the surface-treating substance include lubricants, antistatic agents, hydrous aluminum oxide, hydrous silicon dioxide, 2
To tetrahydric alcohols, surfactants, organometallic chelate compounds, coupling agents, hydrocarbons having a softening point of 90 ° C. or less, and silicone oils. And one of these may be used, or a plurality of types may be used in combination.

Specific examples of the above surface treatment substances include the following. [Lubricant] The names of typical commercially available lubricants and the names of manufacturers are described below. (1) Fatty Acid Amide Lubricants (Saturated Fatty Acid Amide Lubricants) Behenic Acid Amide Lubricants; Diamid KN (Nippon Kasei), etc. Stearic Acid Amide Lubricants; Armide HT (Lion Oil), Alflo S-10 (Nippon Oil), Fatty Acid Amide S (Kao), Diamid 200 (Nippon Kasei), Diamid AP-1 (Nippon Kasei), Amide S / Amid T
(Nitto Chemical), Neutron-2 (Nippon Seika), etc. Hydroxystearic acid amide lubricant Palmitamide amide lubricant; Neutron S-18 (Nippon Seika), Amide P (Nitto Chemical), etc. Lauric acid amide lubricant ; Armide C (Lion
(Akzo), Diamid (Nippon Kasei), etc. (Unsaturated fatty acid amide lubricant) Erucamide amide lubricant; Alflo P-10 (Nippon Yushi), Neutron-S (Nippon Seika), LUBROL (IC)
・ I), Diamid L-200 (Nippon Kasei), etc. Oleic amide lubricants; Armoslip CP (Lion Akzo), Neutron (Nippon Seika), Neutron E-18 (Nippon Seika), Amide O (Nitto Kagaku), Diamid O-200 / Diamid G-200 (Nippon Kasei), Alflo E-10 (Nippon Oil & Fats), Fatty Acid Amide O (Kao), etc. (Bis fatty acid amide lubricant) Methylenebisbehenic acid Amide-based lubricants; Diamid NK bis (Nippon Kasei) etc. Methylenebis stearic acid amide-based lubricants: Diamid 200 bis (Nippon Kasei), Armowax (Lion.
Akzo), bisamide (Nitto Kagaku), etc. Methylenebisoleic acid amide lubricant; Lubron O
(Nippon Kasei) etc. Ethylenebisstearic acid amide lubricants; Armoslip EBS (Lion Akzo) etc. Hexamethylenebisstearic acid amide lubricants; Amide 65 (Kawaken Fine Chemicals) etc. Hexamethylenebisoleic acid amide lubricants; Amide 60 (Kawaken Fine Chemicals), etc. (2) Nonionic surfactant lubricants; electrostripper
-TS-2, Electrostripper-TS-3 (Kao soap), etc. (3) Hydrocarbon lubricants; liquid paraffin, natural paraffin, microwax, synthetic paraffin, polyethylene wax (molecular weight of 6000 or less is preferred), polypropylene wax ( Molecular weight is preferably 6000 or less), chlorinated hydrocarbon, fluorocarbon (4) fatty acid-based lubricant; higher fatty acid (C ₁₂ or more is preferred,
Specifically, caproic acid, stearic acid, oleic acid, erucic acid, palmitic acid, etc.), oxyfatty acids (5) ester lubricants; lower alcohol esters of fatty acids, polyhydric alcohol esters of fatty acids, polyglycol esters of fatty acids, fatty acids Alcohol lubricants; polyhydric alcohols, polyglycols, polyglycerols (7) metallic soaps; higher fatty acids such as lauric acid, stearic acid, ricinoleic acid, naphthenic acid, oleic acid, palmitic acid and erucic acid And Li, Na, Mg, Ca, Sr, Ba, Z
Examples thereof include compounds with metals such as n, Cd, Al, Sn, Pb and Cd, and preferred are magnesium stearate, calcium stearate, zinc stearate, magnesium oleate and the like. (8) Partial saponification of montanic acid ester (9) Silicone-based lubricants; various grades of dimethylpolysiloxane and its modified products (Shin-Etsu Silicone, Toray Silicone), especially various silicones have the effect of improving resin fluidity and lubricity. It is preferable to use it in combination with a coloring substance, because it improves the dispersibility of the coloring substance, makes the resin cloudy and increases the haze, and exerts unexpected effects such as an improvement in coloring power and an improvement in light-shielding property.

The amount of the lubricant added varies depending on the type, and is 0.03 in the case of a lubricant having a small lubricity effect such as a fatty acid metal salt.
-5% by weight, preferably 0.05-3% by weight, particularly preferably 0.1-1.5% by weight. In the case of a lubricant such as a fatty acid amide lubricant, which has a great lubricating effect and is liable to bleed out, and which affects the light-sensitive material, it is 0.01 to 1% by weight, preferably 0.03 to 0.5% by weight, particularly preferably 0.05 to 0.3% by weight. %
Is.

[Antistatic Agent] I. Nonionic (= nonionic) (1) Alkylamine derivative: T-B103 (Matsumoto Yushi), T
-B104 (Matsumoto Yushi) Alkylamide type polyoxyethylene alkylamine: Armostat 31
0 (Lion oil) Tertiary amine (lauryl amine): Armostat 400 (Lion oil) N, N-Bis (2-hydroxyethylcocoamine): Armostat 410 (Lion oil) Tertiary amine: ANTISTATIC 273C, 273, 273E (FineOrg. Ch
em) N-hydroxyhexadecyl-di-ethanol-amine: Belg. P. 654,
049 N-hydroxyoctadecyl-di-ethanol-amine: (National Dis
t.) (2) Fatty acid amide derivative: TB-115 (Matsumoto Yushi), Elegan P100 (Nippon Yushi), Eleek SM-2 (Yoshimura Yushi Kagaku) Hydroxystearic acid amide Oxalic acid-N, N'-distearylamide butyl Ester: Hoechst polyoxyethylene alkylamide (3) Ether type polyoxyethylene alkyl ether RO (CH ₂ CH ₂ O) nH Polyoxyethylene alkylphenyl ether Special nonionic type: Register 104, PE100, 116 to 118
(Daiichi Kogyo Seiyaku), Resist PE132, 139 (Daiichi Kogyo Seiyaku), Elegan E115, Chemistat 1005 (Nippon Yushi), Eleek BM-1 (Yoshimura Yushi Kagaku), Electrostripper TS, TS2, 3, 5, 5. EA, EA2, 3
(Kao soap) (4) Polyhydric alcohol ester type glycerin fatty acid ester: mono-, di-, or triglycerides such as stearic acid or hydroxystearic acid, monoglyceride ((Japanese camphor), TB-123 (Matsumoto Yushi),
Resist 113 (Daiichi Kogyo Seiyaku Co., Ltd.) Sorbitan fatty acid ester Special ester: Eleak BS-1 (Yoshimura Oil Chemicals) 1-Hydroxyethyl-2-dodecylglyoxazoline: British cellophane

II. Anionic (1) Sulfonic acids Alkyl sulfonate RSO ₃ Na Alkylbenzene sulfonate Alkyl sulphate ROSO ₃ Na (2) Phosphoric acid ester type alkyl phosphate

III. Cation system (1) Amide type cation: Resist PE300, 401, 40
2, 406, 411 (Daiichi Kogyo Seiyaku Co., Ltd.) (2) Quaternary ammonium salt Quaternary ammonium chloride Quaternary ammonium sulfate Quaternary ammonium nitrate Katimin CSM-9 (Yoshimura Yushi Kagaku), CATANAC 609 (American cyanamide) ), Denon 314C (Maruhishi Yuka), Armostat 300 (Lion oil), 100V (Armor), Electrostriper-ES (Kao soap), Chemistat 20
09A (Nippon Yushi) Stearamido propyl-dimethyl-β-hydroxyethyl ammoniu
m nitrate: CATANAC / SN (American Theanamid)

IV. Zwitterion type (1) Alkyl petaine type: (2) Imidazoline type: Rheostat 53, 532 (Lion oil), AMS 53 (Lion oil), AMS 303, 313 (Lion oil) Alkyl imidazoline type (3) Metal salt type : AMS 576 (Lion oil) Rheostat 826, 923 (Lion oil) (RNR'CH ₂ CH ₂ CH ₂ NCH ₂ COO) ₂ Mg R ≧ C, R ′ = H or (CH
₂₎ MCOO- (by Lion Yushi) R = C ₃ ~ ₈ hydrocarbon, A = oxygen or imino group, M = organic amine or metal (4) alkylalanine type:

V. Conductive resin Polyvinylbenzyl type cation Polyacrylic acid type cation

VI. Others: Register 204, 205 (Daiichi Kogyo Seiyaku), Elegan 2E, 100E (NOF Corporation), Chemistat 1002, 1003, 2010 (NOF Corporation), Eleek 51
(Yoshimura Petrochemical), ALROMINE RV-100 (Geigy)

Among the above antistatic agents, nonionic (nonionic) type antistatic agents are particularly preferable because they have little adverse effect on photographic properties and human body.

[Aluminum hydrated aluminum oxide] Alumina and the like.

[Silicon Hydroxide] Natural silica, synthetic silica and the like.

[2-4 Tetrahydric Alcohol] Ethylene glycol, propylene glycol, 1,3-dihydroxybutane, heptamethylene glycol, trimethylolethane, glycerin, 1,2,6-hexanetriol and the like.

[Surfactant] Nonionic surfactant, anionic surfactant, cationic surfactant, zwitterionic surfactant and the like.

[Amine Compound] Primary amines such as ethanolamine, laurylamine and butatoramine. Secondary amines such as diethanolamine and N-methylethanolamine. A tertiary amine such as triethanolamine or N.N-dimethyllaurylamine is coated on the light-shielding substance in an amount of 0.01 to 5% by weight.

[Organic metal chelate compound] ethylenediaminetetraacetic acid, N-hydroxyethyl-ethylenediamine-
N, N ^' , N ^'' -triacetic acid, diethylenetriaminepentaacetic acid, β-diketone chelate, nitrilotriacetic acid, potassium sodium tartrate, etc.

[Coupling Agent] Silane type (vinyltrichlorosilane, vinyltrichlorosilane, vinyltrimethoxysilane, vinyltriethoxysilane, etc.), titanate type (isopropyl-triisostearoyl-titanate, etc.).

[Hydrocarbon having a softening point of 90 ° C. or lower] EVA resin, EEA resin, EM having a comonomer content of 5% by weight or more
A resin, EAA resin, density 0.92 g / cm ³ less than the homo polyethylene resin, density 0.915 g / cm ³ less than the ethylene · alpha-olefin copolymer resins, acid-modified polyolefin resin, polyethylene wax, polypropylene wax, cyclopentadiene Resin, modified hydrocarbon resin, etc. are available.

[Silicone oil] Various silicones not only exert the effects of improving resin fluidity and lubricity, but also improve dispersibility of the light-shielding substance, cloud the thermoplastic resin, and increase haze, resulting in coloring. It is preferable because it exhibits unexpected effects such as improved power and improved light-shielding properties. The silicone oil preferably has a viscosity at room temperature in the range of 50 to 100,000 centistokes, more preferably 5,000 to 30,
A high viscosity of 000 centistokes is recommended. Specifically, silicone oil includes polydimethylsiloxane, polymethylphenylsiloxane, olefin-modified silicone,
Amino-modified silicone, carboxyl-modified silicone,
Silicone oil containing modified siloxane bond such as α-methylstyrene modified silicone, polyether modified silicone modified with polyethylene glycol or polypropylene glycol, olefin / polyether modified silicone, epoxy modified silicone, amino modified silicone, alcohol modified silicone, etc. . Among the silicone oils, particularly olefin-modified silicone, polyether-modified silicone, olefin / polyether-modified silicone, etc. are excellent. The silicone oil improves the coefficient of friction of a molding material, such as a film, in a heated state,
By reducing sliding resistance generated during hot plate sealing by an automatic wrapping machine and preventing wrinkles from occurring, a film that retains the performance of having a beautiful appearance, a high degree of sealing performance, and an adhesiveness that does not sag on the packaged object. It is possible to create the basis for obtaining. Further, it is possible to prevent the deterioration of gloss due to sliding and obtain a beautiful seal portion. In the present invention in which silicone oil is also used, the high temperature friction coefficient can be 1.4 or less when sliding heat sealing is performed.

The addition amount varies depending on the type, purpose of use, etc., but is preferably 0.01 to 5.0% by weight, more preferably 0.0
It is 3 to 3.0% by weight, most preferably 0.05 to 1.0% by weight.

The effects of the addition of silicone oil are as follows: fibrous filler, non-fibrous light-shielding substance, pigments are used together to coat their surface to improve dispersibility; dispersion of resin To improve meltability, reduce the motor load on the screw, and prevent the occurrence of melt fracture; sufficient lubricity can be ensured without adding fatty acid amide that bleeds out into a white powder; The coefficient of friction can be reduced, the suitability for automatic bags can be improved, wrinkles during heat sealing and the deterioration of gloss due to sliding can be prevented, and a beautiful sealing part can be obtained; when used in combination with a light-shielding substance, a thermoplastic resin is used. As a result of clouding and increasing haze, the coloring power can be improved and the light-shielding ability can be improved, and the light-shielding property can be ensured even if the addition amount of the light-shielding substance that deteriorates the physical properties is reduced.

As the other surface treatment substance, a non-dropping agent can be mentioned. Photographic photosensitive materials are usually stored in low-temperature warehouses and home refrigerators to ensure long-term quality.When used, they are taken out to the normal temperature environment. Water droplets are generated on a spool injection-molded product for a photographic film around which a photographic light-sensitive material is wound, and an injection-molded product for a photographic film cartridge container body in which a photographic film cartridge is hermetically packaged. Therefore, a dropless agent may be added so that water drops are not generated on the surface of the molded product even when the environmental temperature changes rapidly and greatly. The drip-free agent also suppresses and makes uniform the bleed-out of the lubricant, the antioxidant described below, and the organic nucleating agent. Typical examples of the non-drip agent are shown below. Diglycerin monostearate, polyglycerin monopalmitate, sorbitan monolaurate, sorbitan monostearate, sorbitan monooleate, sorbitan monoerucate, polyoxyethylene sorbitan fatty acid ester, stearic acid monoglyceride, polyoxy Ethylene nonylphenol ether, sorbitan sesquipalmitate, diglycerin sesquioleate, sorbitol fatty acid ester, sorbitol fatty acid dibasic acid ester, diglycerin fatty acid dibasic acid ester, glycerine fatty acid dibasic acid ester, sorbitan fatty acid dibasic acid Ester, sorbitan palmitate, sorbitan stearate, sorbitan palmitate propylene oxide 3 mol Addendum, sorbitan palmitate propylene oxide 2 mol adduct, sorbitol stearate, sorbitol stearate ethylene oxide 3
Molar adducts, diglycerin palmitate, glycerin palmitate, glycerin palmitate / ethylene oxide 2 mol adduct and the like can be mentioned.

The amount of the non-dripping agent added is 0.03 to 5% by weight, preferably 0.1 to 3% by weight, particularly preferably 0.2 to 1.5% by weight.

Other surface treatment agents include organic aluminum compounds (specifically, aluminum ethylate,
Aluminum monoacetylacetonate, bisethylacetoacetate, aluminum trisacetylacetonate, etc., organosiloxane (dimethylsiloxane,
Diethyl siloxane, methyl ethyl siloxane, diphenyl siloxane, methyl phenyl siloxane, ethyl phenyl siloxane, methyl hydrogen siloxane,
Examples thereof include ethylhydrogensiloxane, phenylhydrogensiloxane, and acrylic acid compounds (ethylene acrylic acid copolymer resin, ethylene / ethyl acrylate copolymer resin, ethylene / methyl acrylate copolymer resin).

The surface treatment method includes, for example, surface coating treatment (soaking in a solution state or spraying, and then removing the solvent by drying, etc.), and direct mixing treatment of the surface treatment substance and the light-shielding substance (especially when the surface treatment substance is In the case of a liquid or paste, it is optimal), and a surface treatment substance, a light-shielding substance, and a resin may be melt-kneaded. Specifically, the surface coating treatment is a method in which the light-shielding substance is immersed in a solution of the surface treatment substance in a solvent, and then the solvent is evaporated and dried. A method of spraying a solution of the above surface-treated substance in a solvent onto a light-shielding substance, removing the solvent, and drying. Alternatively, a method of mixing a surface treatment substance with a fluid liquid substance such as a wetting agent and / or a plasticizer and / or a lubricant and a light-shielding substance. Fluid liquid surface treatment substances (lubricants, surfactants, coupling agents, antistatic agents, etc.)
In the case of, it is carried out as a method of directly mixing with the light-shielding substance.

In the present invention, the light-shielding substance is subjected to the above surface treatment. Typical examples of the light-shielding substance used in the present invention are described below. (1) Inorganic compound A. Oxide: Silica, diatomaceous earth, alumina, titanium oxide, iron oxide, zinc oxide, magnesium oxide, antimony oxide, barium ferrite, strontium ferrite, beryllium oxide, pumice, pumice balloon, alumina fiber, etc. B. Hydroxide ... Aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, etc. C.I. Carbonate ... Calcium carbonate, magnesium carbonate, dolomite, dawsonite, etc. D. (Sulfite) ... Calcium sulfate, barium sulfate, ammonium sulfate, calcium sulfite, etc. E. Silicates ... Talc, clay, mica, asbestos,
Glass fiber, glass balloon, glass beads, calcium silicate, montmorillonite, bentonite, etc. F. Carbon ... Carbon black, graphite, carbon fiber, carbon hollow sphere, etc. G. Others: Iron powder, copper powder, lead powder, tin powder, stainless powder,
Pearl pigment, aluminum powder, molybdenum sulfide, zeolite, polon fiber, silicon carbide fiber, brass fiber, potassium titanate, lead zirconate titanate, zinc borate, barium metaborate, calcium borate, sodium borate, aluminum paste, etc. (2) Organic compounds Wood powder (pine, oak, sawdust, etc.), shell fibers (almonds, peanuts, fir shells, etc.), various colored fibers such as cotton, jute, paper strips, cellophane pieces, nylon fibers, polypropylene fibers , Starch, aromatic polyamide fiber, etc.

Among these light-shielding substances, carbon black is preferable because it can reduce the bleed-out amount of lubricants and surfactants. Gas black, furnace black, channel black, anthracene black, acetylene black, Ketjen carbon black, thermal black, lamp black, oil smoke, pine smoke,
Animal black, vegetable black, etc. are available. In the present invention, furnace carbon black is desirable for the purpose of ensuring light-shielding properties, improving cost, physical properties, and not adversely affecting photographic characteristics, and acetylene carbon black and modified by-products are expensive as light-shielding substances having an antistatic effect. Ketjen carbon black, which is carbon black, is preferred. If necessary, it is also desirable to mix the former and the latter according to the required characteristics. Although there are various forms of incorporating the light-shielding substance into the resin composition, the masterbatch method is preferable in terms of cost, prevention of contamination of the workplace, and the like. In the publicly known Japanese Patent Publication No. 40-26196, there is disclosed a method of dispersing a carbon black in a solution of a polymer dissolved in an organic solvent to prepare a polymer-carbon black masterbatch.
No. 0362 describes a method of dispersing carbon black in polyethylene to form a masterbatch.

As a light-shielding substance of the molded product for photographic light-sensitive material of the present invention, there is no fog on the photographic light-sensitive material in use, little increase or decrease in photosensitivity, large light-shielding ability, and polyolefin resin injection molding. Products, polystyrene resin injection-molded products, L-LDPE resin films, etc., pinholes are less likely to occur in injection-molded products and light-shielding films, such as carbon black solidification (fish) and fish eyes. So, among carbon blacks, pH (JIS K
6221) 6.0-9.0, preferably 6.5-8.5, average particle size (measured by electron microscopy) 10-120 mμ, especially 12-7
It is preferably 0 mμ, and among them, the volatile component (measured by JIS K 6221) is 3.5% or less, and most preferably 1.5%.
%, The DBP oil absorption (measured by the oil absorption A method of JIS K 6221) is 50 ml / 100 g or more, and most preferably 70 ml / 100 g or more. Channel carbon black is expensive, and most of them have a volatile component of more than 5.0%, which is not preferable because many cause fog on the photographic light-sensitive material. Most of the lamp blacks also have a pH of 5.0 or less, which adversely affects the photographic properties, so even if it is absolutely necessary to use them, the effects on the photographic properties should be investigated and selected. Further, the sulfur component measured by ASTM D 1619-60 is 0.9% or less, preferably 0.7%.
If you do not do the following, it adversely affects the photographic properties. In particular, it is preferable to select a free sulfur component of 0.1% or less, most preferably 0.05% or less.

An actual product of preferred carbon black is, for example, carbon black # 20 manufactured by Mitsubishi Kasei.
(B), # 30 (B), # 33 (B), # 40 (B), # 44 (B), # 45 (B),
# 50, # 55, # 100, # 600, # 2200 (B), # 2400 (B), M
A8, MA11, MA100 and the like. Overseas products include, for example, Cabot's Black Pearls 2, 46, 7
0, 71, 74, 80, 81, 607, etc., Regal 300, 330, 400, 66
0,991, SRF-S, Vulcan 3, 6 etc., Sterling 1
0, SO, V, S, FT-FF, MT-FF, and the like. In addition, United R of Ashland Chemical Co.,
BB, 15, 102, 3001, 3004, 3006, 3007, 3008, 300
Examples include, but are not limited to, 9, 3011, 3012, XC-3016, XC-3017, and 3020.

The amount of the light-shielding substance added is preferably 0.01 to
30 wt%, more preferably 0.05-20 wt%, most preferably
It is in the range of 0.1 to 10 wt%. The effect of combined use with substances that are colored by light such as vitamin E and photosensitive resin (improvement of coloring density, reduction of physical strength decrease, improvement of melt sealing property, improvement of moldability, improvement of resin fluidity) is greatly exhibited. . Particularly when the thickness is 10.0 μm or less, the amount of the light-shielding substance added is in the range of 0.1 to 15 wt%, preferably 0.5 to 10 wt%, particularly preferably 1.0 to 7.0 wt% from the viewpoint of ensuring light-shielding property and securing physical strength. Is.

An antioxidant is used in the molded article for photographic light-sensitive material of the present invention. The oxidative decomposition of the resin is greater in the polyolefin resin having more CH ₃ branches. This is because the oxygen absorption amount is large, and therefore the degree of oxidative decomposition is polypropylene resin> homopolyethylene resin> ethylene / α-olefin copolymer resin. Various polyethylene resins (including ethylene / α-olefin copolymer resin) and various polypropylene resins (including propylene / ethylene random copolymer resin), which are typical thermoplastic resins of crystalline resins
Etc. are hydrocarbons, and it is considered that the autoxidation of hydrocarbons proceeds in the following chain-like manner once the free radicals are formed by dehydration in the presence of oxygen. RH → R ・ R ・ + O ₂ → ROO ・ ROO ・ + RH → ROOH + R ・ ROOH → RO ・ + ・ OH RO ・ + RH → ROH + R ・ ・ OH + RH → HOH + R ・ In this way, the oxidation of hydrocarbons is accelerated Generate a large amount of alcohol, aldehyde, acid, etc., which further react with each other to form a polymer.

In order to prevent the oxidation of hydrocarbons, it is necessary to go through the above chain reaction, and therefore an antioxidant is used. That is, the antioxidant decomposes the free radical chain terminator that reacts with the free radicals (mainly ROO.) That are chain propagators to inactivate them and the hydroperoxide ROOH that is the main source of free radicals. Then, there is a peroxide decomposing agent which stabilizes this. The former includes alkylphenol antioxidants and aromatic amine antioxidants. The latter includes sulfur-based antioxidants and phosphorus-based antioxidants. Since various antioxidants are also reducing agents that adversely affect the photographic light-sensitive material, the quality deterioration of the photographic light-sensitive material becomes a serious problem unless the addition amount is carefully examined.

Representative examples of the antioxidant used in the present invention are shown below. (A) Phenolic antioxidant Vitamin E, 6-t-butyl-3-methylphenyl derivative, 2
-6-di-t-butyl-P cresol, 2.2'-methylenebis- (4-
Ethyl-6-t-butylphenol), 4'-butylidene bis
(6-t-butyl-m-cresol), 4.4'-thiobis (6-t-butyl-m-cresol), 4-4-dihydroxydiphenylcyclohexane, alkylated bisphenol, styrenated phenol, 2.6- Di-t-butyl-4-methylphenol, n-octadecyl-3- (3'.5'-di-t-butyl-4'-hydroxyphenyl) propinate, 2.2'-methylenebis (4-methyl-6) -
t-butylphenol), 4'-thiobis (3-methyl-6-t-
Butyl phenyl), 4'-butylidene bis (3-methyl-
6-t-butylphenol), stearyl-β (3 ・ 5-di-4-butyl-4-hydroxyphenyl) propionate, 1.1 ・ 3-
Tris (2-methyl-4hydroxy-5-t-butylphenyl)
Butane, 1,3,5 trimethyl-2,4,6-tris (3,5-di-t-butyl-4hydroxybenzyl) benzene, tetrakis [methylene-3 (3,5-di-t-butyl-4 -Hydroxyphenyl) propionate] methane, etc. (b) Ketone amine condensation-based antioxidant 6-ethoxy-2 ・ 2 ・ 4-trimethyl-1,2-dihydroquinoline,
Polymers of 2,2,4-trimethyl-1,2-dihydroquinoline, trimethyldihydroquinoline derivatives, etc. (c) Allylamine antioxidants Phenyl-α-naphthylamine, N-phenyl-β-naphthylamine, N-phenyl-N '-Isopyropyr-P-phenylenediamine, N ・ N'-diphenyl-P-phenylenediamine, N ・ N'
-Di-β-naphthyl-P-phenylenediamine, N- (3'-hydroxybutylidene) -1-naphthylamine and the like (d) imidazole antioxidant 2-mercaptobenzimidazole, zinc salt of 2-mercaptobenzimidazole, 2-Mercaptomethylbenzimidazole, etc. (e) Phosphite antioxidants Alkylated allylphosphite, diphenylisodecylphosphite, tris (nonylphenyl) phosphite sodium phosphite, trinonylphenylphosphite, triphenylphosphite Etc. (f) Thiourea-based antioxidant Thiourea derivative, 1,3-bis (dimethylaminopropyl)-
2-Thiourea, etc. (G) Other antioxidants useful for air oxidation Dilauryl thiodipropionate, etc.

Representative commercial antioxidants are shown below. (1) Phenolic antioxidant; SUMILIZER BHT (Sumitomo),
IRGANOX 1076 (Ciba-Geigy), MARK AO-50 (Adeka Argus), SUMILIZER BP-76 (Sumitomo), TOMINOX SS
(Yoshitomi), IRGANOX 565 (Ciba-Geigy), NONOX WSP (IC
I), SANTONOX (Monsanto), SUMILIZER WX R (Sumitomo), AN
TAGECRYSTAL (Kawaguchi), IRGANOX 1035 (Ciba Geigy),
ANTAGE W-400 (Kawaguchi), NOCLIZER NS-6 (Ouchi Shinko), I
RGANOX 1425 WL (Ciba Geigy), MARKAO-80 (Adeka Argus), SUMILIZER GA-80 (Sumitomo), TOPANOL CA
(ICI), MARK AO-30 (Adeka Argus), MARK AO-2
0 (Adeka Argus), IRGANOX3114 (Ciba Geigy), MARK AO-330 (Adeka Argus), IRGANOX 133
0 (Ciba Geigy), CYANOX 1790 (ACC), IRGANOX 1010
(Ciba Geigy), MARK AO-60 (Adeka Argus), SUMILIZER BP-101 (Sumitomo), TOMINOX TT (Yoshitomi)
Etc. (2) Phosphorus antioxidants; IRGAFOS 168 (Ciba Geigy), MA
RK 2112 (Adeka Argus), WESTON 618 (Borg Warner), MARK PEP-8 (Adeka Argus), ULTRANOX 6
26 (Borg Warner), MARK PEP-24G (Adeka Argus), MARK PEP-36 (Adeka Argus), HCA (Sanko), etc. (3) Thioether antioxidant; DLTDP "YOSHITOMI" (Yoshitomi), SUMILIZER TPL (Sumitomo), ANTIOX L (NOF), DMTD
"YOSHITOMI" (Yoshitomi), SUMILIZER TPM (Sumitomo), ANTIOX
M (NOF), DSTP "YOSHITOMI" (Yoshitomi), SUMILIZ
ER TPS (Sumitomo), ANTIOX S (NOF), SEENOX 412S (Cypro), MARK AO-412 S (Adeka Argus), SUMILIZER
TP-D (Sumitomo), MARK AO-23 (Adeka Argus), SA
NDSTAB P-EPQ (Sand), IRGAFOS P-EPQFF (Ciba Geigy), IRGANOX 1222 (Ciba Geigy), MARK 329K (Adeka Argus), WES TON399 (Borg Warner),
MARK 260 (Adeka Argus), MARK 522A (Adeka Argus), etc. (4) Metal deactivator NAUGARD XL-1 (Uniroyal), MARK CDA-1 (Adeka Argus)
Argus), MARK CDA-6 (Adeka Argus), LRGANO
X MD-1024 (Ciba Geigy), CUNOX (Mitsui Toatsu), etc. Particularly preferred antioxidants are phenolic antioxidants, and as commercial products, various Irganox of Ciba Geigy and Sumitizer BHT of Sumitomo Chemical Co., Ltd. Sumilizer BH-7
6, Sumilizer WX-R, Sumilizer BP-101 and the like. In addition, 2,6-di-hibutyl-p-cresol (BHT), a low-volatile high-molecular weight phenolic antioxidant (trade name Iregano
x 1010, Ireganox 1076, Topanol CA, Ionox 330 etc.),
It is effective to use one or more of dilauryl thiodipropionate, distearyl thiopropionate, dialkyl phosphate and the like, especially two or more thereof in combination.

However, since the antioxidant is also a substance which affects the photographic properties of the photographic light-sensitive material utilizing the oxidation / reduction effect, the addition amount of the antioxidant is preferably 0.01 to 2.0.
%, More preferably 0.02 to 1.0% by weight, most preferably 0.03 to 0.8% by weight. If the amount added is less than 0.1% by weight, there is almost no effect. On the other hand, the added amount is 2.0% by weight
If it exceeds the range, it adversely affects the light-sensitive material utilizing the oxidation and reduction effects. Further, when used in combination with carbon black or the like, antioxidation exerts an additive effect. The combined use of a phenol-based antioxidant, a phosphorus-based antioxidant and carbon black is preferable because the antioxidant effect is particularly synergistic.

In addition, a collection of data on various antioxidants and plastic additives disclosed on pages 794 to 799 of the Plastic Data Handbook (published by KK Industrial Research Association) (K
K Chemical Industry Co., Ltd.) 327-329 various antioxidants and PLASTICS AGE ENCYCLOPEDIA progress, 1986 (K
There are various antioxidants disclosed on pages 211 to 212 of K Plastic Age). It is essential in the present invention that these antioxidants are used alone or in combination of two or more so as not to adversely affect the photographic properties, but it is preferable to use the minimum amount thereof to improve the photographic properties. Preferred to maintain.

Typical thermoplastic resins that can be used in the present invention are shown below. Low density polyethylene (high pressure branched homopolyeletin)
(LDPE) resin Linear low-density polyethylene (low-pressure method or high-pressure modified ethylene / α-olefin copolymer) (L-LDPE) resin High-density polyethylene (HDPE) resin Ethylene-vinyl acetate copolymer (EVA) resin Polypropylene ( Homo, random, block) (PP)
Resin polyethylene terephthalate (polyester) (PE
T) Resin Polyamide (PA) Resin Polyvinyl Chloride (PVC) Resin Vinylidene Chloride / Vinyl Chloride Copolymer (PVDC) Resin Ethylene / Vinyl Alcohol Copolymer (EVOH) Resin Polyvinyl Alcohol (PVA) Resin Polystyrene (PSA) Resin Resistant High impact polystyrene resin (high impact polystyrene HIPS) Acrylonitrile / styrene / butadiene terpolymer resin (ABS)

Among the thermoplastic resins, ethylene copolymer resins are preferable (for film molded products) because they have high physical strength, excellent heat sealability, and excellent dispersibility of light-shielding substances. In addition, various polypropylene resins and polystyrene resins, impact-resistant polystyrene resins, and ABS resins are preferable (for injection-molded products) because they have excellent rigidity and dimensional accuracy and are excellent in injection molding suitability.

Representative examples of the ethylene copolymer resin are shown below. (1) ethylene-vinyl acetate copolymer resin (2) ethylene-propylene copolymer resin (3) ethylene-1-butene copolymer resin (4) ethylene-butadiene copolymer resin (5) ethylene-vinyl chloride Copolymer resin (6) ethylene-methyl methacrylate copolymer resin (7) ethylene-methyl acrylate copolymer resin (8) ethylene-ethyl acrylate copolymer resin (hereinafter
(Displayed as EEA resin) (9) Ethylene-acrylonitrile copolymer resin (10) Ethylene-acrylic acid copolymer resin (11) Ionomer resin (copolymer of ethylene and unsaturated acid is cross-linked with a metal such as zinc Resin) (12) Ethylene-α-olefin copolymer resin (L-LDP
E resin) (13) ethylene-propylene-butene-1 terpolymer resin

When used as a film for packaging a photographic light-sensitive material in an ethylene copolymer resin, it has good film formability and heat seal suitability without adversely affecting the photographic light-sensitive material, bag breaking strength, impact punching strength. In addition, L-LDPE resin and EEA resin are preferable because they have high tear strength. In addition, in order to adapt to the required properties, other thermoplastic resins, various synthetic rubbers, various additives, various elastomers,
It is also preferable to use by blending with a modifier.

[0047] L-LDPE (L iner L ow D ensity P oly e tylene)
The resin is called the third polyethylene resin, which has medium and low density,
High-density, low-cost, high-strength resin that meets the needs of the times of energy saving and resource saving, having the advantages of both polyethylene resins. This resin is produced by the low-pressure method or the high-pressure improvement method and has ethylene and α of 3 to 13 carbon atoms, preferably 4 to 10 carbon atoms.
It is a copolymer of olefins and is a polyethylene-based resin having a linear linear structure with short branches. Preferred α-olefins in terms of physical strength and cost are butene-1, octene-1, hexene-1,4-methylpentene-
1, heptene-1, etc. are used. The density is generally considered to be low to medium density polyethylene resin, but it is 0 for commercial products.
Many are in the range of 87 to 0.97 g / cm ³ . The melt index is often within the range of 0.1-80g / 10 minutes. L
-As the polymerization process of LDPE resin, there are a gas phase method using medium and low pressure equipment, a liquid phase method and an ion polymerization method using a high pressure improvement method equipment.

Specific examples of commercially available L-LDPE resins are shown below. Ethylene / Butene-1 Copolymer Resin G Resin and NUC-FLX (UCC Company) Dourex (Dow Chemical Company) Clearer (DuPont Canada Company) Marlex (Philips Company) Stamilex (DSM Company) Excellen VL (Sumitomo Chemical Co., Ltd.) Neozex (Mitsui Petrochemical) Mitsubishi Polyethylene-LL (Mitsubishi Petrochemical) Nisseki Linilex (Nippon Petrochemical) NUC Polyethylene-LL (Nippon Unicar) Idemitsu Polyethylene L (Idemitsu Petrochemical) Ethylene / Hexene-1 Copolymer Resin TUFLIN ( UCC) TUFTHENE (Nippon Unicar) Ethylene / 4-methylpentene-1 copolymer resin Ultzex (Mitsui Petrochemical) Ethylene-octene-1 copolymer resin Stamirex (DSM) Dourex (Dow Chemical Co.) Screamer ( DuPont Canada Inc. MORETEC (Idemitsu Petrochemical)

Among these L-LDPE resins, the melt index (hereinafter referred to as MI) is particularly preferably 0.8-1 in terms of physical strength, heat seal strength and film formability.
0g / 10min (JIS K-6760), density 0.870-0.940g / cm ³ (JI
S K-6760) and α-olefins having 6 to 8 carbon atoms in a liquid phase process and a gas phase process.

A particularly preferred representative example is the trade name, in which polyethylene has 6 carbon atoms as an α-olefin side chain.
Of Mitsui Petrochemical Co., Ltd. in which 4 pieces of 4-methylpentene-1 were introduced, and 8 carbon atoms as an α-olefin side chain
MORE of Idemitsu Petrochemical Co., Ltd. which introduced 1 octene-1
There are TAC and DSM's Stamilex and Dow Chemical's Dourex (these are L-LDPE resins obtained by the co-liquid phase process of four companies). A preferred representative example obtained by the low-pressure vapor phase process is the product name: α
-TUFLIN of UCC and T of Nippon Unicar Co., Ltd. in which hexene-1 having 6 carbon atoms is introduced as an olefin side chain.
There is UFTHENE etc.

In addition, recently released ultra low density linear low density polyethylene resin having a density of less than 0.910 g / cm ³ , for example U.
NUC-FLX from CC and Excellen V from Sumitomo Chemical Co., Ltd.
L is also preferable (these two products are both butene-1 having an α-olefin of 4 carbon atoms).

Representative manufacturers of the EEA resin are Union Carbide Co. (USA), Nippon Unicar Co., Ltd., Mitsubishi Petrochemical Co., Ltd., Sumitomo Chemical Co., Ltd., Mitsui Polychemical Co., Ltd., etc. . As specific examples, representative brand names of EEA resins currently marketed by Nippon Unicar Co., Ltd. and their comonomer content, melt index and density are shown (comonomer content of 6% or more by NUC test method).

[0053]

[Table 1]

In the molded article of the present invention, only one kind of the above-mentioned thermoplastic resins may be used, but two or more kinds, especially two or more kinds of thermoplastic resins having a difference in softening point of 10 ° C. or more are used. Preference is given to using. As described above, by using the thermoplastic resins having different softening points, the effects of improving the dispersibility of the light-shielding substance, improving the fluidity of the resin, improving the melt adhesion, and improving the moldability can be obtained. Specifically, a preferable combination of resins is L-LDPE resin, various polypropylene resins (including propylene / α-olefin copolymer resin), and polyolefin resin such as homopolyethylene resin of various densities, in which the amount of comonomer is 5 % Or more of EVA resin, EEA resin, EMA resin and various waxes, EAA resin, acid-modified polyolefin resin, tackifying resin and the like, and the comonomer amount is 7% with respect to non-crystalline resins such as various polyethylene resins and ABS resins. Above EVA resin, EEA resin, EM
Resin A and various low molecular weight polyolefin resins, various waxes, EAA resins, acid-modified polyolefin resins, tackifying resins, various elastomers and the like.

A nucleating agent may be added to the resin composition used in the present invention as another additive. Organic nucleating agents include carboxylic acids, dicarboxylic acids, their salts and anhydrides, salts and esters of aromatic sulfonic acids, aromatic phosphinic acids, aromatic phosphonic acids, aromatic carboxylic acids, other aluminum salts, and aromatics. Group phosphate metal salts, alkyl alcohols having 8 to 30 carbon atoms, condensation products of polyhydric alcohols and aldehydes, and alkylamines,
For example, pt-butyl aluminum benzoate, 1,2,3,4-dibenzylidene sorbitol, di-substituted benzylidene sorbitol compound represented by the following formula

[0056]

[Chemical 1]

[Wherein, R ₁ and R ₂ are alkyl, alkoxy or halogen having 1 to 8 carbon atoms, m and n are both 0 to 3 and m + n ≧ 1. ], Stearyl lactic acid calcium, magnesium and other metal salts, N-
A compound represented by the following formula, such as (2-hydroxyethyl) -stearylamine.

[0058]

[Chemical 2]

[Wherein R ₃ is an alkyl group having 8 to 30 carbon atoms, k and l are both 0 to 10 and k + l ≧
It is 1. ], Lithium salts of 1,2-hydroxystearic acid, sodium salts, potassium salts, calcium salts, metal salts such as magnesium salts, alkyl alcohols such as stearyl alcohol and lauryl alcohol, sodium benzoate,
Including benzoic acid and sebacic acid.

Among the organic nucleating agents, a typical example of a sorbitol compound which has a particularly large crystallization promoting effect, reduces molding failures, shortens the molding cycle, improves rigidity, and improves coloring appearance is shown below. di- (o-methylbenzylidene) sorbitol o-methylbenzylidene-p-methylbenzylidene sorbitol di- (m-methylbenzylidene) sorbitol m-methylbenzylidene-o-methylbenzylidene sorbitol di- (p-methylbenzylidene) sorbitol m-methylbenzylidene-p-methylbenzylidene sorbitol 1 3-heptanylidenesorbitol 1 ・ 3,2 ・ 4-diheptanylidenesorbitol 1 ・ 3,2 ・ 4-di (3-nonyl-3-pentenylidene) sorbitol 1 ・ 3-cyclohexanecarbylidenesorbitol 1 ・ 3,2 ・ 4-dicyclohexanecarbylidenesorbitol 1 ・ 3,2・ 4-di (p-methylcyclohexanecarbylidene) sorbitol Aromatic hybrocarbon groups or derivatives thereof 1 ・ 3-benzylidenesorbitol 1 ・ 3,2 ・ 4-dibenzylidene-D-sorbitol 1 ・ 3,2 ・ 4-di (m-methylbenzylidene) sorbitol 1・ 3,2 ・ 4-di (p-methylbenzylidene) sorbitol 1 ・ 3,2 ・ 4-di (p-hexylbenzylidene) sorbitol 1 ・ 3,2 ・ 4-di (l-naphthalenecarbylidene) sorbitol 1 ・ 3,2 ・4-di (phenylacetylidene) sorbitol

Among the above organic nucleating agents, the sorbitol compound has a great addition effect and rarely exerts an adverse effect on the photographic properties of the photographic light-sensitive material. The amount of the sorbitol-based organic nucleating agent added is preferably 0.01 to 3.0% by weight, more preferably 0.03 to 2.0% by weight, and most preferably 0.05 to 1.0% by weight.

Since the organic nucleating agent, especially the sorbitol compound, has a bulk specific gravity of 0.1 ± 0.02 and tends to scatter,
In particular, it is preferable to use together with various fatty acid metal salts, because scattering can be prevented, dispersibility can be improved, addition effect can be further improved, and bleed-out can be reduced.
The addition amount of these various fatty acids (particularly, higher fatty acid metal salts having C ₈ or more) is preferably 0.01 to 5.
It is 0% by weight, more preferably 0.03 to 3.0% by weight, and most preferably 0.05 to 1.5% by weight. This fatty acid metal salt improves the dispersibility of the light-shielding substance and also improves the moldability. Further, it has been found that since the halide contained in the resin, which has a bad influence on the photographic property of the photographic light-sensitive material, is neutralized to render it harmless, the photographic property is also improved.

Examples of the inorganic nucleating agent include alkali metal hydroxides such as lithium hydroxide, sodium hydroxide and potassium hydroxide, alkali metal oxides such as sodium oxide, lithium carbonate, sodium carbonate, potassium carbonate and sodium hydrogen carbonate. , An alkali metal carbonate such as potassium hydrogen carbonate, an alkaline earth metal hydroxide such as calcium hydroxide, magnesium hydroxide and barium hydroxide, an alkaline earth metal oxide such as calcium carbonate and calcium oxide, and the like.

The nucleating agent is not limited to these, and other known nucleating agents can be used. Needless to say, the nucleating agent is not limited to a single type and two or more types can be used in combination. The amount of the inorganic nucleating agent added is preferably 0.01 to 5.0% by weight, more preferably 0.05 to 3.0% by weight.

Various effects can be obtained by adding the nucleating agent. For example, by adding 0.1 part by weight of pt-butylbenzoic acid as a nucleating agent to 100 parts by weight of a random copolymer of propylene and ethylene as a polymer, a haze (HAZ
E) can be reduced from 40% to 21% and can be further reduced to 12% by adding 0.2 parts by weight.
The tensile yield point stress is, for example, 380 kg / cm ² when 0.1 part by weight is added.
To 420 kg / cm ² can be improved, but even if it is added more, it hardly improves thereafter. Further, the bending elastic modulus is, for example, 500 kg / cm ² to 60 when 0.1 part by weight is added.
It can be improved by 0 kg / cm ² , but even if it is added more, it hardly improves thereafter.

Various moldings (injection molding, inflation film molding, extrusion lamination molding, extrusion sheet molding, blow molding, injection blow molding, rotational molding, vacuum molding) are carried out through an extruder having a melt-kneading function while ensuring high physical strength. Various methods have been carried out in order to solve various problems in molding.

For example, there are a method of increasing the resin temperature to improve the fluidity of the resin, a method of using a die having a multi-spiral structure, and the like. The former method causes thermal deterioration of the resin, generation of spots, and coloring failure. Various problems such as occurrence occur. In the case of the latter, not only can it not be used for various resins because it is a special facility, but also problems such as heat generation and reduction of resin discharge amount with L-LDPE resin and equipment are expensive, and the production cost of the product increases There is a problem such as.

Therefore, in the present invention, fatty acid amides, lower alcohol esters of fatty acids, polyhydric alcohol esters of fatty acids, polyglycol esters of fatty acids, various silicone oils, various coupling agents, various fatty acid metal salts, various antistatic agents, various lubricants. , 0.001 to 5 of various surfactants
% By weight, preferably 0.005 to 3% by weight, particularly preferably
Addition of 0.01 to 1% by weight, most preferably 0.03 to 0.5% by weight solves the above-mentioned problems, improves the dispersibility of the light-shielding substance essential to the present invention, improves the light-shielding ability, and prevents the occurrence of spots. Prevents deterioration of photographic properties of photographic light-sensitive materials (prevents fogging, abnormal sensitivity, friction fogging, etc.),
Attempts have been made to prevent scratches, melt fractures, die lip stains and die lip streaks, wrinkles, static marks, and moldability.

In particular, 0.001 to 0.5% by weight of an ester of an aliphatic monocarboxylic acid having 20 to 40 carbon atoms and an aliphatic monohydric alcohol having 20 to 40 carbon atoms is added to prevent the above problems. We have found that we can demonstrate.
In particular, it not only reduces the adverse effects on the photographic properties of the photographic light-sensitive material but also reduces the motor load, improves the dispersibility of the light-shielding substance, improves the moldability, and makes the appearance of the molded product excellent.

The ester used in the present invention includes an aliphatic monocarboxylic acid having 20 to 40 carbon atoms, preferably 25 to 35 carbon atoms and an aliphatic monohydric alcohol having 20 to 40 carbon atoms, preferably 25 to 35 carbon atoms. It is an ester. Examples of the monocarboxylic acid include montanic acid, melissic acid, cerotic acid, brisic acid, laxeric acid and the like. Examples of monohydric alcohols include montyl alcohol, melysyl alcohol,
Examples include laccil alcohol, ceryl alcohol, and brisyl alcohol.

Since these improve the fluidity of the thermoplastic resin and achieve uniform kneading, they are also very excellent as surface-treating substances for the light-shielding substance. further,
When used as a dispersant for the inorganic and / or organic nucleating agent in the surface coating, various excellent effects such as scattering prevention, bleed-out prevention, uniform dispersibility improvement, and resin fluidity improvement are exhibited.

The following may be added to the resin composition as other additives. [Examples of other additives] (Types of additives) (Examples of substitutes) (1) Plasticizers; phthalates, glycol esters, fatty acid esters, phosphates, etc. (2) Stabilizers: lead-based, cadmium-based , Zinc-based, alkaline earth metal-based, organic tin-based, etc. (3) Flame retardants; phosphoric acid esters, halogenated phosphoric acid esters, halides, inorganic substances, phosphorus-containing polyols, etc. (4) Fillers: alumina, kaolin, clay , Calcium carbonate, mica, talc, titanium oxide, silica, etc. (5) Reinforcing agent; glass roving, metal fiber, glass fiber, glass milled fiber, carbon fiber, etc. (6) Foaming agent; inorganic foaming agent (ammonia carbonate, Sodium bicarbonate), organic foaming agents (nitroso-based, azo-based), etc. (7) Vulcanizing agents; Vulcanization accelerators, accelerator aids, etc. (8) Deterioration inhibitors; UV absorbers, antioxidants, metal deactivators , Peroxide decomposer Etc. (9) Coupling agents; silane-based, titanate-based, chromium-based, aluminum-based, etc. (10) Various thermoplastic resins, synthetic rubber, etc.

On the other hand, considering the case of landfill treatment as waste, degradable plastics that are currently being researched or are introduced into some markets may be used. For example, as a biodegradable polymer I
CI "BIOPOL", UCC "Polycaprolactone"
Etc. or natural that is susceptible to biodegradation,
Alternatively, a polymer that is indirectly disintegrated by adding a synthetic polymer as an additive, or a starch-containing polyethylene or the like can be used.

It is also possible to use a photodegradable polymer. For example, an ECO copolymer obtained by copolymerizing ethylene and carbon monoxide in which a carbonyl group is introduced as a photosensitizing group in the main chain during polymerization of polyethylene is used, or a transition metal salt, an oxidation accelerator, a photosensitizer is added as an additive. It is possible to use a material obtained by adding a material or the like to the base polymer and imparting photodegradability thereto. Further, one or more kinds of degradable polymers such as biodegradable polymers, photodegradable polymers and water-soluble polymers may be used in combination (see JP-A-3-129341).

Typical examples of the molded article for photographic light-sensitive material of the present invention obtained by molding the above-mentioned light-shielding thermoplastic resin composition are shown below, but the present invention is not limited thereto. (1) Film molded product Single layer film molded product (Fig. 1); Japanese Patent Publication No. 2700/1990, etc. Multilayer coextruded film molded product (Figs. 2 and 3); Single layer film molded product or multilayer coextruded film molded product (FIG. 4); JP-B-63-26697, JP-B-2-2701, JP-B-2-13774,
Japanese Examined Patent Publication No. 2-19225, etc. Packaging materials using the above-mentioned flexible sheets;
Packaging bags (unipack bag, single flat bag, double flat bag, single gusset bag, double gusset bag, etc.), shredding package, bulk package (JP-A-3-53243, JP-A-3-71346) Bulletin, etc.) Package for collective packaging, etc. and for loading light-sensitive material in strips (FIG. 10); JP-A-55-113543, JP-A-60-13386.
JP-A-60-167796, JP-A-2-72347, JP-A-3-47547, JP-A-3-54937, JP-A3-86358, JP-A-3-96648. Bulletins, etc. (2) Vacuum molded products (3) Injection molded products Spools for photographic films, film units with lenses,
Containers for photographic film cartridges, light-shielding containers, plastic photographic film cartridges, light-shielding magazines for loading light chambers, cores, photographic film cartridges, instant film packs, etc. Disc film cartridges; Jitsukai Sho 60-21743
Film unit with lens (Fig. 9); JP-A-63-2266
No. 43, etc. Spool for photographic film (FIG. 7); JP-A-1-251030
JP, JP-A-57-196218, JP-A-59-15049, USP 1930144, JP 63-73742, JP
No. 54-120931, Japanese Utility Model Laid-Open No. 58-178139 to 178145,
JP-B-55-31541, JP-A-58-203436, JP-A-58-82237, JP-A-58-82236, JP-B-58-82236.
44-16777, Japanese Utility Model Publication 63-73742, JP 62-
240957, GB 2199805A, etc. Patrone for photographic film (Fig. 8); JP-A-54-1118
22, JP-B-45-6991, JP-B-55-21089, JP-A-50-338
31, JP-A-56-87039, JP-A-55-97738, JP-A-1-31
2538, JP-A-57-190948, USP 4,846,418, USP
US Pat. No. 4,848,693, USP 4,887,776 Specification Container for photographic film cartridges (FIGS. 5 and 6); , JP-A-63-121
No. 047, Japanese Patent Laid-Open No. 62-291639, No. 1-88940
No. JP, No. 1-113235, No. 1-123337, No. 2-33236, No. 3-48581, No. 2-38939, US Pat. No. 4,639,386,
USP 4,801,011 specification, USP 4,979,351 specification, EP 0
237062A2 Specification, EP 0280065A1 Specification, EP 029
8375A2 Specification, etc. Core, reel; Jitsukai Sho 60-107848 gazette, USP 480992
3, GB 2033873 B Specification Sheet film magazine; Sho 56-5141, etc. Photographic film cartridge (Fig. 11);
Japanese Patent No. 610, Japanese Utility Model Publication No. 2-24846, Japanese Utility Model Publication No. 2-29041
JP, JP 60-120448, JP 1-312537, etc. Photographic film case (FIG. 10); USP 4,779,756, JP 54-100617, JP 64-32343 , Japanese Utility Model Publication No. 1-94258, Japanese Utility Model Publication No. 2-56139,
EP 0242905 A1 specification, Japanese Patent Publication No. 2-54934, etc.

The method for forming a molded article for a photographic light-sensitive material is as follows:
Depending on the form of each molded product, for example, inflation film molding, injection molding, vacuum molding, sheet molding, T-die flat film molding, pressure molding, rotational molding, in-mold vacuum injection molding and the like are used.

The molded article of the present invention can be printed with characters or symbols necessary for its function or in order to enhance the commercial value. As the ink used for these printings, those which are harmless to the light-sensitive material are selected and can be selected from commonly used offset printing inks, gravure printing inks or UV inks.

Typical synthetic resins used in these inks are vinyl chloride vinyl acetate, nitrification cotton, polyester, polyamide urethane, polyacryl, rosin modified maleic acid, ethylene vinyl acetate, vinyl ether, urethane vinyl acetate, and salt. Acetate vinyl urethane resin, modified alkyd resin modified phenolic resin,
Alkali-soluble resin (rosin-modified maleic acid resin, styrene-maleic acid resin, styrene-acrylic acid resin, acrylic acid ester acrylic acid resin, methacrylic acid ester acrylic acid resin), hydrosol type resin (styrene-maleic acid resin, styrene acrylic acid resin) , Α-methylstyrene acrylic acid resin, acrylic acid ester acrylic acid resin,
(Methacrylic acid ester acrylic acid resin), emulsion type resin (styrene resin, styrene acrylic acid ester resin, acrylic acid ester copolymer resin, methacrylic acid ester copolymer resin), as a resin for VU ink, an acrylic unsaturated group is used. Polymers having are generally used, and typical examples are polyester / acrylic acid ester, polyester / urethane resin / acrylic acid ester, epoxy resin / acrylic acid ester, pentaerythritol triacrylate, trimethylolpropane triacrylate, Hexanediol diacrylate, neopentyl glycol diacrylate, triethylene glycol diacrylate, and hydroxyethylene methacrylate can be used.

A commonly known coloring agent is used in combination with these inks. As the colorant to be used, various pigments and azo pigments described in JP-A-63-44653 (azo lake; carmine 6B, red 2B, insoluble azo; monoazo yellow (PY-1, 3), disazo yellow ( PY-12, 13, 14, 17, 83), pyrazolo orange (PO
-B-34), vulcan orange (PO-16), condensed azo type; chromophthal yellow (PY-93, 95), chromophthal red (PR-144, 166), polycyclic pigment (phthalocyanine type; copper phthalocyanine) Blue (PB-15, 15-1, 15-
3), copper phthalocyanine green (PG-7), cioxazine type; dioxazine violet (PV-23), isoindolinone type; isoindolinone yellow (PY-109, 11)
0), threnic; perylene, perinone, flavantron, thioindigo, lake pigment (malachite green,
Rhodamine B, Rhodamine G, Victoria Blue B) and inorganic pigments (oxide, titanium dioxide, red iron oxide, sulfate);
Precipitating barium sulfate, carbonate; Precipitating calcium carbonate,
Silicate; hydrosilicate, anhydrous silicate, metal powder; aluminum powder, bronze powder, zinc dust, carbon black, yellow lead,
Examples include navy blue. Further, these pigments may be added as a light-shielding substance to the above-mentioned resin layer or the like. In addition to these, oil-soluble dyes and dispersible dyes are also used. Other various solvents, dispersants, and
Additives such as wetting agents, defoaming agents, leveling agents, thickeners, stabilizers, cross-linking agents and waxes are used.

Photosensitive materials to which the molded article for photographic photosensitive material of the present invention can be applied are shown below. Silver halide photographic light-sensitive material (printing film, color photographic paper, color film, master paper for printing, DTR light-sensitive material, computer typesetting film and paper, microfilm, movie film, self-developing photographic light-sensitive material, direct positive type Films and papers, etc. Thermal development photosensitive materials (thermal development color photosensitive materials, thermal development black-and-white photosensitive materials (for example, Japanese Patent Publication Nos. 43-4921 and 43-4924, "Basics of Photographic Engineering") 553 to 555 (published by Corona Publishing Co., Ltd.) and Research Tis Closure magazine, June 1978, pages 9 to 15 (RD-17029), etc. Further, JP-A-59-12431. , The same 60
-2950 gazette, the same 61-52343 gazette and U.S. Patent No. 4,584,2
No. 67, a transfer type heat-developable color light-sensitive material, etc.)) Photosensitive / thermosensitive recording material (photothermography (light-sensitive / thermosensitive image forming method) described in JP-A-3-72358, etc.) Recording materials using) Diazonium photographic light-sensitive materials (4-morpholinobenzenediazonium microfilms, microfilms, copying films, printing plate materials, etc.) Azide, diazide photographic light-sensitive materials (paraazidobenzoede, 4,4 ' Photosensitive materials containing diazidostilbene, etc., such as copying films, printing plates, etc. Quinonediazide photographic photosensitive materials (orthoquinonediazide, orthonaphthoquinonediazide compounds, eg benzoquinone (1,2) -diazide- (2) -4 -Photosensitive material containing phenyl ether sulfonate, for example, printing plate material, copying film, adhesion film ) Photopolymer (photosensitive material containing a vinyl monomer such as, printing plate, the adhesion film, etc.) polyvinyl cinnamate-based photosensitive material (e.g., printing film, IC resist etc.)

In addition, photosensitive substances which are altered or deteriorated by various kinds of light, oxygen, sulfurous acid gas, etc., such as foods (butter, peanut bags, margarine, snack products, knobs, confectionery, tea, paste, etc.), pharmaceuticals (gastrointestinal drug) , Powdered medicines such as cold medicine, granular medicines), dyes, pigments, photographic developing chemicals,
It can also be applied to photographic fixing chemicals, toner, etc.

[0082]

By applying the surface-treating substance of the present invention to the light-shielding substance, the dispersibility of the light-shielding substance in the resin composition is improved. As a result, the light-shielding ability is dramatically increased, and the occurrence of spots is also reduced. Antioxidants are also used in the present invention. As a result, oxidative decomposition of the resin is suppressed,
Sensitization / desensitization, fogging, and other adverse effects on the photographic properties of photographic light-sensitive materials can be reduced.

[0083]

EXAMPLES Examples of molded articles for photographic light-sensitive materials of the present invention will be described with reference to the drawings. 1 to 4 are partial sectional views of a light-shielding film for a photographic light-sensitive material.

The light-shielding film for a photographic light-sensitive material shown in FIG. 1 is formed of a single-layer film consisting only of the light-shielding thermoplastic resin film layer 1a as a molded product for a photographic light-sensitive material of the present invention.

The light-shielding film for a photographic light-sensitive material shown in FIG. 2 is a two-layer coextrusion of a light-shielding thermoplastic resin film layer 1a and a light-shielding thermoplastic resin film layer 2a as a molded product for a photographic light-sensitive material of the present invention. It is formed of the film IIa.

The light-shielding film for a photographic light-sensitive material shown in FIG. 3 is a three-layered structure including a light-shielding thermoplastic resin film layer 1a, an intermediate layer 3 and a thermoplastic resin film layer 2 as a molded product for a photographic light-sensitive material of the present invention. It is formed of a coextruded film IIIa.

The light-shielding film for a photographic light-sensitive material shown in FIG. 4 is formed of a laminated film IVa obtained by adhering the above-mentioned two-layer coextruded film IIa by blocking.

FIG. 5 is a cut sectional view of a container 4 for a photographic film cartridge as a molded product for a photographic light-sensitive material of the present invention. The container 4 for a photographic film cartridge comprises a container body 5 and a lid 6. Both the container body 5 and the lid 6 are molded articles for photographic light-sensitive material of the present invention. FIG. 6 is a perspective view of a container 4 for a photographic film cartridge as a molded product for a photographic light-sensitive material of the present invention. This container 5 for a photographic film cartridge has a container body 5 and a lid 6 which are integrally formed. It is formed of the light-shielding thermoplastic resin composition of the invention.

FIG. 7 is a front view of a spool 10 for a photographic film as a molded product for a photographic light-sensitive material of the present invention. The entire spool 10 for a photographic film is formed of the light-shielding thermoplastic resin composition of the present invention. There is.

FIG. 8 is an exploded perspective view of a photographic film cartridge as a molded product for a photographic light-sensitive material of the present invention. The photographic film cartridge 7 includes an upper case 8 and a lower case 9 which constitute the main body of the cartridge. It comprises a spool 10 around which a photographic film to be loaded is wound.
Then, the upper case 8, the lower case 9 and the spool 10
Is formed of the light-shielding thermoplastic resin composition of the present invention.

FIG. 9 is an exploded perspective view of the film unit with lens 11 as a molded product for photographic light-sensitive material of the present invention.
This film unit with lens 11 is a lower case for storing the photographic film cartridge 7 for storing the spool 10 wound with the photographic film in the optical bag.
12 and an upper case that shields the lower case 12 from light
And the lower case 12 and the upper case 13
Is formed of the light-shielding thermoplastic resin composition of the present invention.

FIG. 10 is a sectional view of a light-shielding case 14 for a photographic film, which is a molded product for a photographic light-sensitive material of the present invention. It is formed of the light-shielding thermoplastic resin composition of the invention.

FIG. 11 is an exploded perspective view of a photographic film cartridge 15 as a molded product for photographic light-sensitive material of the present invention.
This photographic film cartridge 15 is composed of a lower case 16 and an upper case 17, and a spool 18 loaded therein, and the lower case 16 (and the upper case 17 is made of the light-shielding thermoplastic resin composition of the present invention). Has been formed.

FIG. 12 is a diagram showing a packaging process of a band-shaped photographic light-sensitive material package using a light-shielding thermoplastic resin film layer as a molded product for photographic light-sensitive material of the present invention. In this figure, reference numeral 19 is a belt-shaped photographic photosensitive material, reference numeral 20 is a thermoplastic resin film guide member, reference numeral 21 is a light-shielding thermoplastic resin resin film cover member, reference numeral 22 is a joint portion, reference numeral 23 is a winding core, reference numeral 24 is It is a bush for hermetic packaging.

Example 1 A two-layer coextrusion inflation light-shielding film molded product corresponding to FIG. The molecular weight distribution (MW / MN) is 7.6, MI (melt index) is 0.6g / 10min, and the density is 0.925.
18% by weight of homopolyethylene resin with g / cm ³ , crystallinity of 71%, MI of 5.0 g / 10 minutes, density of 0.88 g / cm ³ , molecular weight distribution
(MW / MN) 3.6, crystallinity 35%, ethylene unit content 80 mol%, butene-1 20 mol%, ethylene butene-1
Random copolymer resin 76.7% by weight, surface-treated with magnesium stearate pH 7.0, average particle size 25mμ, 3% by weight furnace carbon black with 0.08% by weight loss under absolutely dry conditions, 0.05% erucic acid amide %, Vitamin E 0.05% by weight, tetrakis [methylene-3- (3,5-di-ter
t-Butyl-4-hydroxyphenyl) propionate] Methane 0.05 wt% L-LDPE resin composition with a thickness of 50μ
m is a black light-shielding thermoplastic resin film layer with a molecular weight distribution (MW / MN) of 7.6, MI of 1.0 g / 10 min, and density of 0.94
5 g / cm ³ , 20% by weight homopolyethylene resin with a crystallinity of 78%, MI 2.5 g / 10 min, density 0.92 g / cm ³ , crystallinity 53
%, The ethylene unit content with a molecular weight distribution (MW / MN) of 3.3 is 9
5 mol% and 5 mol% octene-1 ethylene octene-
13.5% by weight of copolymer resin, the loss on drying in absolute dry condition
Titanium dioxide 6% by weight surface-treated with 0.15% by weight dihydric alcohol, silica 0.05% by weight, zinc stearate 0.2
The blow-up ratio is 1.5 for blown film molded products consisting of two layers of a light-shielding thermoplastic resin film layer having a white appearance and a thickness of 50 μm, which is made of an L-LDPE resin composition containing 1% by weight of vitamin E and 0.1% by weight of vitamin E. Molded. The molded product for photographic light-sensitive material of the present invention is a simultaneous two-layer coextrusion light-shielding inflation film molded product having different thicknesses of the inner and outer layers and the resin composition and having a thickness of 100 μm. This two-layer coextrusion blown film molded product is excellent in physical strength, heat sealability, photographic property, light shielding property, flatness, moldability, and appearance. It is possible to distinguish between the front and back, and the inner layer has a black appearance. The sealed bag prepared by heat-sealing was able to be identified even under a safelight for packaging the photographic light-sensitive material, and the bags could be stacked without increasing the temperature inside and outside the bag even when left in the sunlight. In addition, the outer layer is white and can be identified under a safelight. Even if it is left in the sunlight, the temperature rise on the surface of the bag and inside the bag is small, it does not deteriorate the quality of the photographic light-sensitive material, and it protects against vitamin E and light. Since it also uses a volatile substance, it can improve the light-shielding ability by 15% or more, has a large physical strength and heat-sealing strength, and can prevent the decomposition of the resin. Could be reduced.

Example 2 A container body for photographic film cartridges corresponding to FIG. 5 in which the inner wall portion of the container body was shaved by 0.3 mm to have a side wall thickness of 1 → 0.7 mm. Calcium stearate 0.5% by weight
With a dry weight loss of 0.2 wt% titanium dioxide 3
Wt% and di- (p-methylbenzylidene) sorbitol 0.
15% by weight and o-methylbenzylidene-p-methylbenzylidene sorbitol 0.01% by weight of the surface-coated masterbatch dispersed in 5% by weight of low density homopolyethylene resin and polyethylene wax mixed resin (total amount 8.66% by weight) , Titanium oxide concentration of 35%) and MI (AST
M D-1238) 40g / 10min, density (ASTM D-1505) 0.90g / cm
³ , flexural modulus (ASTM D-790) 10,700kg / cm ² , Rockwell hardness (ASTM D-785) 88R propylene 96.7% by weight, ethylene amount 3.3% by weight, average molecular weight (weight average molecular weight / 90.54% by weight of propylene / ethylene random copolymer resin having a number average molecular weight of 3.7, oleic acid amide
0.05% by weight, hindered phenolic antioxidant tetrakis [methylene-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate] methane 0.10% by weight, phosphorus antioxidant trinonylphenyl Phosphite 0.05% by weight, 2-hydroxy-4-octoxybenzophenone 0.1% by weight of an ultraviolet absorber, using a propylene ethylene random copolymer resin composition containing 0.5% by weight of diglycerin monostearate ester as a drip-proof agent, Using the injection molding machine with a mold clamping pressure of 150 tons and the hot runner type mold with 24 pieces, the container body for photographic film cartridges corresponding to Fig. 5 was injection molded under the conditions of resin temperature 220 ℃ and cooling water temperature 20 ℃. Created with a molding cycle of seconds. Even when the temperature at the time of taking out the container body was 45 ° C., there was no deformation such as buckling or bottom sinking and scratches, and it was a container body for photographic film cartridges that had an excellent white appearance and could be continuously molded unattended for a long period of time.

The injection-molded product, which has a white appearance, is a container body for photographic film cartridges, which has a very short production cycle of 7 seconds despite the fact that the molding cycle takes a large number of 24 pieces, and is excellent in productivity. The crystallinity was increased and the Rockwell hardness could be improved to 98R because it did not deform even if the takeout temperature was as high as around 45 ° C. As a result, scratches and abrasion dust do not occur even if the paper is fed at high speed or inserted in a photographic film cartridge and sealed with a lid. Furthermore, bleed-out was hardly observed even after storage in a low-temperature warehouse at 18 ° C for one year, and adhesion of water droplets was also not observed. Even when left in an automobile under sunlight, the container body was neither thermally deformed nor the spool around which the photographic film was wound was thermally deformed. In addition, the printability on the container body was excellent, and even when the container body was displayed in the store as it was, there was no discoloration or thermal deformation, and there was little dust adhesion, which was preferable. The photographic properties were also good, and the fog was significantly reduced from 0.07 to 0.02 without surface treatment.

Further, since the inner wall portion was shaved by 0.3 mm to make it thin, the tongue portion of the photographic film surely entered the container body, and the suitability for automatic insertion of the photographic film cartridge was excellent. Also, because the resin injection port is 30% thicker than the average thickness of the bottom part, even if the resin injection port is cut out from the mold, it is possible to secure a thickness approximately equal to the bottom part, moisture resistance and light shielding. It was an excellent container body for photographic film cartridges that could secure the property. Furthermore, the Rockwell hardness has been greatly improved, and the occurrence of scratches and wear has been reduced. In addition, the cooling time has been shortened and the container body (molded product) can be taken out even at around 40 ° C, which greatly extends the molding cycle. I was able to shorten it. Molding failures such as deformation and gate residue were almost eliminated, and unmanned molding was possible.

Example 3 The outer wall of the container body was shaved by 0.3 mm to have a side wall thickness of 1 → 0.7 mm, and the inner diameter of the side wall near the bottom was approximately the film outlet (port port) of the cartridge for photographic film. The inner diameter of the upper opening from the inner diameter of the side wall near the bottom 1.
Stacking with taper increased by 5 mm Fig. 5
A container body for a photographic film cartridge corresponding to (b).

Melt index is 30 g / 10 minutes (ASTM D-12
38), density 0.900 g / cm ³ (ASTM D-1505), crystallinity 87
% Propylene / ethylene random copolymer resin (ethylene content 3.5 mol%) 77.5% by weight, fatty acid amide 0.05
2.0% by weight of aluminum powder surface-treated with 0.2% by weight of magnesium stearate and tetrakis [methylene-3 (3.5-di-tert-butyl-4-hindered as a hindered phenolic antioxidant as an antioxidant. Hydroxyphenyl) propionate] methane 0.05% by weight and n-octadecyl-3- (4'-hydroxy-3 ', 5'-di-tert-butylphenol) propionate 0.05% by weight are used,
Low-crystalline resin MI (ASTM D-1238) 23g / 10min, density (ASTM D-1505) 0.905g / cm ³ , 20% by weight ethylene-butene-1 copolymer resin with crystallinity 23% %, Surface-treated with magnesium stearate as an organic nucleating agent
-(Methylbenzylidene) sorbitol 0.15 wt% propylene resin composition using an injection molding machine (24 cavities, mold clamping pressure 150t), resin temperature 2
This is an injection-molded article for a photographic light-sensitive material, which is obtained by injection-molding a container body for a photographic film cartridge at a temperature of 10 ° C in a molding cycle of 8 seconds. This injection-molded product had almost no fatal molding failure such as coloring failure or short shot and no deformation, so that continuous unmanned injection molding was possible for a long time.

The container body for photographic film cartridges, which is an injection-molded product, has a fast molding cycle, good lubricity between the container bodies, excellent suitability for high-speed air delivery, less scratches, and excellent antistatic properties. The adhesion of the film was small and the suitability for putting the photographic film cartridge in and out of the container body was excellent. In addition, the appearance is very good, the drop strength of the concrete from the height of 5m to the floor is very large,
In particular, the drop impact strength under low temperature conditions of 0 ° C. or less is 0% due to the combined effect of the combined use of aluminum powder and ethylene / butene-1 copolymer resin, and aluminum powder and ethylene
The container body for the photographic film cartridge of Comparative Product 1 to which the butene-1 copolymer resin was not added was very excellent in comparison with the occurrence of 6% cracks. In addition, even after storage at 18 ° C for 1 year, lubricants such as oleic acid amide and magnesium stearate are less likely to bleed out to the surface of the container body, and stickiness, dust adhesion, and white powder are not generated. It was a container body for a photographic film cartridge having excellent lubricity and antistatic property.

As an unexpected effect, it was found that the molding shrinkage due to the progress of crystallization of the polypropylene resin with time is reduced by the effect of adding the surface-treated aluminum powder and the ethylene / butene-1 copolymer resin. Furthermore, even if the container was left in a sealed container for 5 hours under sunlight, it had almost no endotherm, did not deform, the temperature inside the container did not rise, and the quality of the photographic film did not deteriorate.

Example 4 A container body for a photographic film cartridge corresponding to FIG. The ethylene / butene-1 copolymer resin of the propylene-based resin composition of Example 3 was 20 → 19% by weight, and the average particle size of the surface treated with a dispersion of fatty acid amide and magnesium stearate instead of 2% by weight of aluminum powder was 20mμ, pH
Using a light-shielding propylene random copolymer resin composition containing 3% by weight of furnace carbon black of 7.0, using the same injection molding apparatus and the same mold as in Example 2, at a resin temperature of 210 ° C. for coloring photographic film patrone It is an injection-molded article for a photographic light-sensitive material obtained by injection-molding a container body in a molding cycle of 6 seconds. This photographic film cartridge container body had an excellent appearance capable of continuous unmanned injection molding for a long time without causing a fatal molding failure.

The container body for photographic film cartridges, which is an injection molded product, does not cause deformation such as buckling or bottom sink even if the molding cycle of 9 seconds is shortened compared to the comparative product 1, and almost no coloring failure occurs. In addition, the drop strength was much larger than that of the comparative product 1, and crack generation was 0% at room temperature (20 ° C). 0
The drop strength under the low temperature condition of ℃ or less was also larger than that of the comparative product 1, and the crack occurrence rate was 6 → 0%, which was good.

Furthermore, although it is black and opaque, no thermal deformation occurs even if the container body is left in the sunlight for 3 hours,
It was excellent in heat resistance, the temperature rise in the container was not so large as in Example 2, thermal deformation of the spool of the photographic film cartridge did not occur, and there was almost no deterioration of the photographic film. Furthermore, since it is colored black, it has excellent light-shielding properties, and there was no light entry from the drawing port (port port) of the photographic film of Patrone. It was a container body for photographic film cartridges that did not generate substances that would adversely affect the photographic film even after storing it in a low temperature warehouse at 18 ° C for one year, and had little fogging or increased / decreased sensation, and that could maintain excellent photographic properties. .. In addition, substances that easily bleed out, such as lubricants, antioxidants, and nucleating agents, are also adsorbed on the carbon black, causing little bleedout, and causing stickiness, dust adhesion, and white powder generation more than in Example 2. It was excellent in that it was scarcely recognizable to the eyes due to the small amount and a synergistic effect with the black appearance.

Example 5 A container for body-to-body prismatic photographic film cartridge in which the body and the lid correspond to each other as shown in FIG. 6 is integrated by a hinge. Using the same propylene / ethylene random copolymer resin as in Example 3, one container main body for a rectangular photographic film patrone corresponding to FIG.

With regard to characteristics, they are excellent as in Example 3 and, further, because they are square, they are suitable for stacking and display at stores, and can remove a decorative small box made of paper. Various prints are colored because they are white and opaque ground color, and as described in Example 3, because of the white and opaque ground color, thermal deformation of the container does not occur even when the sunlight is reflected and the products are displayed in stores. There is little temperature rise in the container, therefore there is little deformation of the spool and deterioration of the photographic property of the photographic film, and it has excellent antistatic properties, less bleed-out of lubricants, antioxidants, and nucleating agents to the container surface, and dust adhesion It is preferable because it has few excellent ones and has many industrial waste reduction and after-use applications. Further, it is a high-quality container that prevents the thermal decomposition of the resin and the additives by adding an appropriate amount of the antioxidant, and generates few substances that adversely affect the photographic film.

Comparative Example 1 A container body for photographic film cartridges corresponding to FIG. 0.1% by weight of two hindered phenolic antioxidants from Example 2, 0.05% by weight of oleic acid amide for surface treatment of aluminum powder and nucleating agent, 0.2% by weight of magnesium stearate, ethylene butene-1 copolymer The same propylene-ethylene random copolymer resin composition as in Example 2 was used, except that 20 parts by weight of the resin was removed and the propylene / ethylene random copolymer resin was changed from 77.5 to 97.85% by weight. It is an injection-molded article for photographic light-sensitive material, which is obtained by injection-molding a container body for a photographic film cartridge prepared by using a mold in a molding cycle of 8 seconds. The container body for a photographic film cartridge, which is an injection-molded product, is an excellent one having substantially the same characteristics and dimensional accuracy as those of Example 2 except that it has inferior drop strength under a low temperature condition of 0 ° C. or less and an appearance immediately after molding. there were.

However, after being stored in a low temperature warehouse at 18 ° C. for 1 year, crystallization proceeded, so that the drop strength at room temperature was worse than that of Example 2, and at 0 ° C., it dropped from a height of 5 m onto the concrete floor. Then, a crack of 6% occurred. The main problem was that the dispersibility of the aluminum powder was poor and, as a result, the appearance was poor. The molding cycle was 15 seconds or more, which was twice as much as that of Example 2, buckling, short shots, and bottom sinks were scattered, and the slipperiness was poor and an exposure sound was generated when the core was pulled out from the container body.

Further, since the added amount of the hindered phenolic antioxidant is 0 parts by weight, the resin is decomposed in the retained portion of the mold or the like to generate an aldehyde or the like when continuously molded for a long period of time, so that a photographic light-sensitive material is obtained. Adverse effects such as fog and increase / decrease
It is difficult to perform unmanned continuous molding because the resin is burnt to cause coloring failure or lumps, which may cause gate clogging or short shots.

Example 6 This is a spool for photographic film corresponding to FIG. MI is
40 g / 10 minutes, density 0.90 g / cm ³ , crystallinity 95%, flexural modulus (ASTM D-790) 12,500 kgcm / cm, molecular weight distribution (weight average molecular weight / number average molecular weight) is 4.5 Of propylene is 98
70% by weight of propylene-ethylene random copolymer resin consisting of 2% by weight of ethylene and 2% by weight of ethylene, MI of 25 g / 10 minutes, density of 0.925 g / cm ³ , and Orzen rigidity of 2,800 kg / cm ² (JIS K-71
06), the molecular weight distribution (weight average molecular weight / number average molecular weight)
Low-pressure vapor phase ethylene / butene-1 copolymer resin 26.85 consisting of 96% by weight of 3.5 ethylene and 4% by weight of butene-1.
%, Erucic acid amide 0.10% by weight, calcium hydroxystearate 0.2% by weight, and antistatic agent monoglyceride-containing 95% stearic acid monoglyceride 0.2% by weight. 2% by weight of furnace carbon black of 7.0, 0.10% by weight of vitamin E (α-tocopherol) as an antioxidant, 2,6-di-tert-butyl-p-cresol (generally BHT) which is a hindered phenolic antioxidant.
It is said that a propylene / ethylene random copolymer resin composition comprising 0.3% by weight of calcium carbonate surface-treated with 0.2% by weight of dimethylpolysiloxane as an inorganic nucleating agent is used. Photosensitive material, injection molding machine with a mold clamping pressure of 150 tons, hot runner type mold with 24 cavities and resin temperature of 205 ° C, and a spool for photographic film corresponding to Fig. 7 was injection molded in 8 seconds molding cycle. Injection molded product.

This photographic film spool has a coloring problem,
Almost no fatal molding failures such as short shots and poor light-shielding properties, very good lubricity, good removability from the mold, no deformation, and continuous unmanned injection molding for a long time. became. In order to reduce the drawing torque of photographic film made of conventional polystyrene resin,
Compared to photographic film spools that have been coated with a surfactant on the flange, this injection-molded photographic film spool has a faster molding cycle, less scratches and abrasion, and good sliding properties. The pulling torque of the film was small, and it was particularly effective in a camera of an automatic photographic film winding system, and the winding stop during shooting was greatly reduced, and the battery consumption was greatly reduced. Further, it is excellent in chemical resistance and solvent resistance, and is preferable for a photographic film used in a wide range of temperatures from a high temperature to a low temperature in a developing laboratory where various chemicals are handled.

As an unexpected effect, the fog of the photographic film is reduced (the density is reduced by 0.03), and the light-shielding ability is improved by 15% (even if the light-shielding substance is reduced by 15%, the light-shielding property is substantially the same). The degree of uniform dispersion of the light-shielding substance is improved, and there is no problem with sink marks in the thick part, warpage of the flange, and large molding shrinkage that occurred when using conventional propylene / ethylene random copolymer resin. Has improved.

As described above, it was excellent in that various properties were improved and there was no bleed-out of lubricant or antistatic property. This is due to the additive effect of using a combination of special furnace carbon black and vitamin E to reduce the generation of aldehydes, etc., which adversely affect the photographic film generated when the resin decomposes in the presence of heat and oxygen, and shade it by coloring. Injection molding with improved capacity and a smaller propylene / ethylene random copolymer resin with a small molecular weight distribution and an ethylene / butene-1 copolymer resin to reduce molding shrinkage and reduce sink marks and flange warpage. It seems to be due to the effect of the product.

Example 7 A resin photographic film cartridge corresponding to FIG. Using the resin composition of Example E, a polypropylene resin photographic film cartridge of FIG. 8 was prepared by an injection molding method. However, as in Example 6, it was an injection molded product for photographic light-sensitive materials excellent in various characteristics. It was In particular, it has excellent slipperiness and injection moldability, and the torque for feeding and winding the photographic film is small, and there is no failure that stops during shooting.

Example 8 MI of 0.3 g / 10 minutes, density of 0.95 g / cm ³ , Vicat softening point
81.62% by weight of high-density homopolyethylene resin powder at 128 ° C,
0.05% by weight melissyl cerotic acid, 0.3% by weight magnesium stearate, pH 7.0, average particle size (microscopic measurement) 20 mμ, oil absorption 80 ml / 100 g, volatile components 0.
7%, 3% by weight of furnace carbon black with 0.61% of sulfur component (0.02% of free sulfur component), tetrakis [methylene-3- (3,5-di-
-tert-Butyl-4-hydroxyphenyl) propionate] methane 0.03% by weight, MI 0.7g / 10 minutes, density 0.92g
15% by weight of ethylene / butene-1 random copolymer resin powder having a softening point of 100 ° C./cm ³ and thoroughly mixed with a Henschel mixer, and then using a twin-screw mixer manufactured by Ikegai Tekko Co., Ltd. After extruding into a strand at a resin temperature of 210 ° C., a pellet having a diameter of 3 mm and a length of 6 mm was obtained by a pelletizer. As the molded product of the present invention, an inflation film molding machine manufactured by Placo Co., Ltd. using this pellet (200
mmφ ring die, lip clearance 1.1mm) with a blow ratio of 1.2 is used to mold a 100μm thick light-shielding inflation film as the guide member in Fig. 12, and a film cover member is molded to form a 70μm thick light-shielding inflation film. I used it. It is a light-chamber loading package that uses color photographic paper as a strip-shaped photographic light-sensitive material. This 70 μm
The light-shielding film of has a molecular orientation in the longitudinal direction (tear strength in the lateral direction / tear strength in the longitudinal direction = 967 g / 136 g = 7.
1) By arranging the vertical direction in the direction of the arrow (⇔) in Fig. 12, the sealed package for light chamber loading with the structure in Fig. 12 is loaded into the automatic developing machine (minilab), and the cover member is automatically developed with the guide member. It can be torn straight from the end of the joint by pulling it out of the machine.

The cover member and the guide member using the light-shielding inflation film of the present invention are made of the same resin composition, and the joint portion can be welded and the strip-shaped photosensitive material and the guide member can also be welded. The sealed light-shielding package can be easily formed. In addition, as a result of using melissyl cerotate, the motor load was reduced by 20%, the film moldability was improved, and the difference in wall thickness of the blown film was 6 μm for the product of the present invention compared to 22 μm for the non-added product.
The number was reduced to 3 or less, and wrinkles did not occur at all, and the light-shielding property, physical strength, and appearance were excellent.

Example 9 Ethylene butene having MI of 20 g / 10 minutes, density of 0.950 g / cm ³ , Izod impact strength of 9 kg · cm / cm, Olsen rigidity of 7500 kg / cm ² , and Vicat softening point of 115 ° C. -1 Random Copolymer Resin 94.55% by Weight, Montylic Acid Melisyl Ester 0.0
5% by weight, 0.2% by weight of zinc stearate, 5% by weight of titanium dioxide surface-coated with hydrous aluminum hydroxide, 1.3,
Using a white ethylene / butene-1 random copolymer resin composition consisting of 0.2% by weight of 2,4-diheptany lidenesorbitol, a rectangular photographic film case with a body-corresponding to FIG. 10 was molded by an injection molding method. This container has excellent drop impact strength without adversely affecting the photographic properties of the photographic light-sensitive material, and its white appearance makes it identifiable even under safelight. Temperature rise was small, the quality of the photographic light-sensitive material did not deteriorate, and almost no water droplets were observed in the container. Also,
The motor load on the screw was also reduced by 20%, and the variation in thickness was small. Furthermore, since it has excellent sealing and fitting properties and printability, it is possible to eliminate the decorative small box by using various original sealing methods. After being used as a container for photographic film, it can be used as a container for various small items. In addition, it can be reused, and when pelletized and reused, the lid is the same ethylene / butene-1 random copolymer resin composition, so sorting of the lid is not necessary and the physical strength is small. , Was particularly good.

[0119]

According to the present invention, the uniform dispersibility of the light-shielding substance can be improved, the light-shielding ability can be improved, and the occurrence of lumps can be reduced, so that the appearance can be improved.

[Brief description of drawings]

FIG. 1 is a partial sectional view of a packaging film for a photographic light-sensitive material, which is an example of a molded product for a photographic light-sensitive material of the present invention.

FIG. 2 is a partial sectional view of a packaging film for a photographic light-sensitive material, which is an example of a molded product for a photographic light-sensitive material of the present invention.

FIG. 3 is a partial cross-sectional view of a packaging film for a photographic light-sensitive material, which is an example of a molded product for a photographic light-sensitive material of the present invention.

FIG. 4 is a partial sectional view of a packaging film for a photographic light-sensitive material, which is an example of a molded product for a photographic light-sensitive material of the present invention.

FIG. 5 is a cross-sectional view of a photographic film container which is an example of a molded product for photographic light-sensitive material of the present invention. (B) is a cross-sectional view of a photographic film container body having a taper in which the inner diameter of the upper opening is larger than the inner diameter of the bottom.

FIG. 6 is a cross-sectional view of a container for photographic film having a rectangular lid-integrated body, which is an embodiment of a molded product for photographic light-sensitive material of the present invention.

FIG. 7 is a sectional view of a spool for photographic film which is an example of a molded product for photographic light-sensitive material of the present invention.

FIG. 8 is an exploded perspective view of a resin photographic film cartridge that is an example of a molded product for a photographic light-sensitive material of the present invention.

FIG. 9 is an exploded perspective view of a film unit with a lens, which is an example of a molded product for a photographic light-sensitive material of the present invention.

FIG. 10 is a cross-sectional view of a body-integrated prismatic photographic film case, which is an example of a molded product for a photographic light-sensitive material of the present invention.

FIG. 11 is an exploded perspective view of a photographic film cartridge which is an example of a molded product for photographic light-sensitive material of the present invention.

FIG. 12 is a perspective view showing a packaging process of a band-shaped photographic light-sensitive material package using a light-shielding film having a light-shielding thermoplastic resin film layer, which is an example of a molded product for photographic light-sensitive material of the present invention.

[Explanation of symbols]

1a ... Light-shielding thermoplastic resin film layer (molded article for photographic light-sensitive material) 2, 2a ... Thermoplastic resin film layer 3a ... Intermediate layer a ... Indicates containing a light-shielding substance.

─────────────────────────────────────────────────── ───

[Procedure amendment]

[Submission date] May 6, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Claim 3

[Correction method] Change

[Correction content]

[Procedure Amendment 2]

[Document name to be amended] Statement

[Correction target item name] 0004

[Correction method] Change

[Correction content]

[0004]

However, in the case of the film partrone container body, when the amount of the light-shielding substance added is increased, spots (insoluble mass) are generated due to poor dispersion of the light-shielding substance and drop strength is lowered. And the photographic properties are further deteriorated (fogging and sensitization occur), and it is difficult to put into practical use as a container body for a recent high-speed photographic negative film (ISO sensitivity of 100 or more). Further, in the film for packaging a light-sensitive material, when the content of the light-shielding substance is increased, the photographic property is adversely affected, and the occurrence of spots due to poor dispersion is increased. There was a problem in terms.

[Procedure 3]

[Document name to be amended] Statement

[Correction target item name] 0008

[Correction method] Change

[Correction content]

Specific examples of the above surface treatment substances include the following. [Lubricant] The names of typical commercially available lubricants and the names of manufacturers are described below. (1) Fatty Acid Amide Lubricants (Saturated Fatty Acid Amide Lubricants) Behenic Acid Amide Lubricants; Diamid KN (Nippon Kasei), etc. Stearic Acid Amide Lubricants; Armide HT (Lion Oil), Alflo S-10 (Nippon Oil), Fatty Acid Amide S (Kao), Diamid 200 (Nippon Kasei), Diamid AP-1 (Nippon Kasei), Amide S / Amid T
(Nitto Chemical), Neutron-2 (Nippon Seika), etc. Hydroxystearic acid amide lubricant Palmitamide amide lubricant; Neutron S-18 (Nippon Seika), Amide P (Nitto Chemical), etc. Lauric acid amide lubricant ; Armide C (Lion
(Akzo), Diamid (Nippon Kasei), etc. (Unsaturated fatty acid amide lubricant) Erucamide amide lubricant; Alflo P-10 (Nippon Yushi), Neutron-S (Nippon Seika), LUBROL (IC)
・ I), Diamid L-200 (Nippon Kasei), etc. Oleic amide lubricants; Armoslip CP (Lion Akzo), Neutron (Nippon Seika), Neutron E-18 (Nippon Seika), Amide O (Nitto Kagaku), Diamid O-200 / Diamid G-200 (Nippon Kasei), Alflo E-10 (Nippon Oil & Fats), Fatty Acid Amide O (Kao), etc. (Bis fatty acid amide lubricant) Methylenebisbehenic acid Amide-based lubricants; Diamid NK bis (Nippon Kasei) etc. Methylenebis stearic acid amide-based lubricants: Diamid 200 bis (Nippon Kasei), Armowax (Lion.
Akzo), bisamide (Nitto Kagaku), etc. Methylenebisoleic acid amide lubricant; Lubron O
(Nippon Kasei) etc. Ethylenebisstearic acid amide lubricants; Armoslip EBS (Lion Akzo) etc. Hexamethylenebisstearic acid amide lubricants; Amide 65 (Kawaken Fine Chemicals) etc. Hexamethylenebisoleic acid amide lubricants; Amide 60 (Kawaken Fine Chemicals), etc. (2) Nonionic surfactant lubricants; electrostripper
-TS-2, Electrostripper-TS-3 (Kao soap), etc. (3) Hydrocarbon lubricants; liquid paraffin, natural paraffin, microwax, synthetic paraffin, polyethylene wax (molecular weight of 6000 or less is preferred), polypropylene wax ( (Molecular weight is preferably 6000 or less), chlorinated hydrocarbon, fluorocarbon, etc. (4) Fatty acid-based lubricant; higher fatty acid (C ₁₂ or more is preferable,
Specifically, caproic acid, stearic acid, oleic acid, erucic acid, palmitic acid, etc.), oxyfatty acids, etc. (5) ester lubricants; lower alcohol esters of fatty acids, polyhydric alcohol esters of fatty acids, polyglycol esters of fatty acids, (6) Alcohol lubricants; polyhydric alcohols, polyglycols, polyglycerols (7) metallic soaps; lauric acid, stearic acid, succinic acid, stearyl lactic acid, benzoic acid, hydroxystearic acid, lactic acid, phthalates Higher fatty acids such as acid, ricinoleic acid, naphthenic acid, oleic acid, palmitic acid, and erucic acid, and L
i, K, Na, Mg, Ca, Sr, Ba, Zn, Cd,
Examples thereof include compounds with metals such as Al, Sn, Pb and Cd, and preferable ones are magnesium stearate, calcium stearate, zinc stearate, magnesium oleate and the like. (8) Partial saponification of montanic acid ester (9) Silicone-based lubricants; various grades of dimethylpolysiloxane and its modified products (Shin-Etsu Silicone, Toray Silicone), especially various silicones have the effect of improving resin fluidity and lubricity. It is preferable to use it in combination with a coloring substance, because it improves the dispersibility of the coloring substance, makes the resin cloudy and increases the haze, and exerts unexpected effects such as an improvement in coloring power and an improvement in light-shielding property.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0009

[Correction method] Change

[Correction content]

The amount of the lubricant added varies depending on the type. Among the lubricants most suitable for the molded article for a photographic light-sensitive material of the present invention, a lubricant having a small lubricating effect such as a fatty acid metal salt is used.
It is from 03 to 5% by weight, preferably from 0.05 to 3% by weight, particularly preferably from 0.1 to 1.5% by weight. In the case of lubricants such as fatty acid amide and bis fatty acid amide type lubricants, which have a large lubricating effect and easily bleed out, and which affect the light-sensitive material,
It is 0.01 to 1% by weight, preferably 0.03 to 0.5% by weight, particularly preferably 0.05 to 0.3% by weight.

[Procedure Amendment 5]

[Document name to be amended] Statement

[Name of item to be corrected] 0025

[Correction method] Change

[Correction content]

[Silicone oil] Various silicones not only exert the effects of improving resin fluidity and lubricity, but also improve dispersibility of the light-shielding substance, cloud the thermoplastic resin, and increase haze, resulting in coloring. It is preferable because it exhibits unexpected effects such as improved power and improved light-shielding properties. The silicone oil preferably has a viscosity at room temperature of 50 to 100,000 centistokes, more preferably 5,000 to 3
A high viscosity of 0,000 centistokes is recommended. Specifically, silicone oil is polydimethylsiloxane, polymethylphenylsiloxane, olefin-modified silicone, amide-modified silicone, amino-modified silicone, carboxyl-modified silicone, α-methylstyrene-modified silicone, polyether-modified with polyethylene glycol or polypropylene glycol. It is a silicone oil containing a modified siloxane bond such as silicone, olefin / polyether modified silicone, epoxy modified silicone, amino modified silicone, alcohol modified silicone. Among the silicone oils, olefin-modified silicone, amide-modified silicone, polydimethylsiloxane, polyether-modified silicone, olefin / polyether-modified silicone and the like are particularly excellent. The silicone oil improves the friction coefficient of a molding material, for example, a film in a heated state, reduces sliding resistance generated during hot plate sealing by an automatic wrapping machine, and prevents wrinkles from generating a beautiful appearance. It is possible to form the basis for obtaining a film that retains the performance of having a high degree of sealing property and an adhesiveness that does not sag on the packaged object. Further, it is possible to prevent the deterioration of gloss due to sliding and obtain a beautiful seal portion. In the present invention in which silicone oil is also used, the high temperature friction coefficient can be 1.4 or less when sliding heat sealing is performed.

[Procedure correction 6]

[Document name to be amended] Statement

[Name of item to be corrected] 0032

[Correction method] Change

[Correction content]

In the present invention, the light-shielding substance is subjected to the above surface treatment. Typical examples of the light-shielding substance used in the present invention are described below. (1) Inorganic compound A. Oxide: Silica, diatomaceous earth, alumina, titanium oxide, iron oxide, zinc oxide, magnesium oxide, antimony oxide, barium ferrite, strontium ferrite, beryllium oxide, pumice, pumice balloon, alumina fiber, etc. B. Hydroxide ... Aluminum hydroxide, magnesium hydroxide, basic magnesium carbonate, etc. C.I. Carbonate ... Calcium carbonate, magnesium carbonate, dolomite, dawsonite, etc. D. (Sulfite) ... Calcium sulfate, barium sulfate, ammonium sulfate, calcium sulfite, etc. E. Silicates ... Talc, clay, mica, asbestos,
Glass fiber, glass balloon, glass beads, calcium silicate, montmorillonite, bentonite, etc. F. Carbon ... Carbon black, graphite, carbon fiber, carbon hollow sphere, etc. G. Others: Iron powder, copper powder, lead powder, tin powder, stainless powder,
Pearl pigment, aluminum powder, molybdenum sulfide, zeolite, polon fiber, silicon carbide fiber, brass fiber, potassium titanate, lead zirconate titanate, zinc borate, barium metaborate, calcium borate, sodium borate, aluminum paste, etc. (2) Organic compounds Wood powder (pine, oak, sawdust, etc.), shell fibers (almonds, peanuts, fir shells, etc.), various colored fibers such as cotton, jute, paper strips, cellophane pieces, nylon fibers, polypropylene fibers , Starch (including modified starch and surface-treated starch), aromatic polyamide fiber, etc.

[Procedure Amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction content]

Among these light-shielding substances, carbon black is preferable because it can reduce the bleed-out amount of lubricants and surfactants. Gas black, furnace black, channel black, anthracene black, acetylene black, Ketjen carbon black, thermal black, lamp black, oil smoke, pine smoke,
Animal black, vegetable black, etc. are available. In the present invention, furnace carbon black is desirable for the purpose of ensuring light-shielding properties, improving cost, physical properties, and not adversely affecting photographic characteristics, and acetylene carbon black and modified by-products are expensive as light-shielding substances having an antistatic effect. Ketjen carbon black, which is carbon black, is preferred. If necessary, it is also desirable to mix the former and the latter according to the required characteristics. Although there are various forms of incorporating the light-shielding substance into the resin composition, the masterbatch method is preferable in terms of cost, prevention of contamination of the workplace, and the like. In Japanese Patent Publication No. 40-26196, which is a publicly known document, there is disclosed a method in which carbon black is dispersed in a solution of a polymer dissolved in an organic solvent to prepare a polymer-carbon black masterbatch.
Japanese Patent Publication No. 43-10362 describes a method of dispersing carbon black in polyethylene to form a masterbatch.

[Procedure Amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0034

[Correction method] Change

[Correction content]

As a light-shielding substance of the molded product for photographic light-sensitive material of the present invention, there is no fog on the photographic light-sensitive material in use, little increase or decrease in photosensitivity, large light-shielding ability, and polyolefin resin injection molding. Products, polystyrene resin injection-molded products, L-LDPE resin films, etc., pinholes are less likely to occur in injection-molded products and light-shielding films, such as carbon black solidification (fish) and fish eyes. So, among carbon blacks, pH (JIS K
6221) 6.0-9.0, preferably 6.5-8.5, average particle size (measured by electron microscopy) 10-120 mμ, especially 12-7
It is preferably 0 mμ, and among them, the volatile component (measured by JIS K 6221) is 3.5% or less, and most preferably 1.5%.
%, The DBP oil absorption (measured by the oil absorption A method of JIS K 6221) is 50 ml / 100 g or more, and most preferably 70 ml / 100 g or more. Channel carbon black is expensive, and most of them have a volatile component of more than 5.0%, which is not preferable because many cause fog on the photographic light-sensitive material. Most of the lamp blacks also have a pH of 5.0 or less, which adversely affects the photographic properties, so even if it is absolutely necessary to use them, the effects on the photographic properties should be investigated and selected. Further, the sulfur component measured by ASTM D 1619-60 is 0.9% or less, preferably 0.7%.
If you do not do the following, it adversely affects the photographic properties. In particular, it is preferable to select a free sulfur component having a bad influence on the photographic properties of the photographic light-sensitive material of 0.1% or less, most preferably 0.05% or less.

[Procedure Amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0035

[Correction method] Change

[Correction content]

An actual product of preferred carbon black is, for example, carbon black # 20 manufactured by Mitsubishi Kasei.
(B), # 30 (B), # 33 (B), # 40 (B), # 41 (B), # 44 (B),
# 45 (B), # 50, # 55, # 100, # 600, # 950, # 1000,
Examples include # 2200 (B), # 2400 (B), MA8, MA11, and MA100. Overseas products include, for example, Cabot's Black Pearls 2, 46, 70, 71, 74, 80, 81, 607, R, etc.
egal 300, 330, 400, 660, 991, SRF-S, Vulcan
3, 6, etc., Sterling 10, SO, V, S, FT-FF,
MT-FF etc. are mentioned. In addition, Ashland Chemical Company UnitedR, BB, 15, 102, 3001, 3004, 300
6, 3007, 3008, 3009, 3011, 3012, XC-3016, XC
-3017, 3020 and the like can be mentioned, but the invention is not limited thereto.

[Procedure Amendment 10]

[Document name to be amended] Statement

[Correction target item name] 0036

[Correction method] Change

[Correction content]

The amount of the light-shielding substance added is preferably 0.01 to
The range is 30% by weight, more preferably 0.05 to 20% by weight, and most preferably 0.1 to 10% by weight. The effect of combined use with substances that are colored by light such as vitamin E and photosensitive resin (improvement of coloring density, reduction of physical strength decrease, improvement of melt sealing property, improvement of moldability, improvement of resin fluidity) is greatly exhibited. . In particular, when the thickness is 10.0 μm or less, the amount of the light-shielding substance added is 0.1 to 15% by weight, preferably 0.5 to 10% by weight, particularly preferably 1.0 to 7.
It is in the range of 0% by weight.

[Procedure Amendment 11]

[Document name to be amended] Statement

[Name of item to be corrected] 0037

[Correction method] Change

[Correction content]

An antioxidant is used in the molded article for photographic light-sensitive material of the present invention. The oxidative decomposition of the resin is greater in the polyolefin resin having more CH ₃ branches. This is because the oxygen absorption amount is large, and therefore the degree of oxidative decomposition is polypropylene resin> homopolyethylene resin> ethylene / α-olefin copolymer resin. Various polyethylene resins (including ethylene / α-olefin copolymer resin) and various polypropylene resins (including propylene / ethylene random copolymer resin), which are typical thermoplastic resins of crystalline resins
Etc. are hydrocarbons, and it is considered that the autoxidation of hydrocarbons proceeds in the following chain-like manner once the free radicals are formed by dehydration in the presence of oxygen. RH → R ・ R ・ + O ₂ → ROO ・ ROO ・ + RH → ROOH + R ・ ROOH → RO ・ + ・ OH RO ・ + RH → ROH + R ・ ・ OH + RH → HOH + R ・ In this way, the oxidation of hydrocarbons is accelerated. As a result, a large amount of alcohol, aldehyde, acid, etc., which affects the photographic properties of the photographic light-sensitive material, are produced, and these react with each other to form a polymer.

[Procedure Amendment 12]

[Document name to be amended] Statement

[Correction target item name] 0038

[Correction method] Change

[Correction content]

In order to prevent the oxidation of hydrocarbons, it is necessary to go through the above chain reaction, and therefore an antioxidant is used. That is, the antioxidant decomposes the free radical chain terminator that reacts with the free radicals (mainly ROO.) That are chain propagators to inactivate them and the hydroperoxide ROOH that is the main source of free radicals. Then, there is a peroxide decomposing agent which stabilizes this. The former includes alkylphenol antioxidants and aromatic amine antioxidants. The latter includes sulfur-based antioxidants and phosphorus.
There are system antioxidants. Since various antioxidants are also reducing agents that adversely affect the photographic light-sensitive material, the quality deterioration of the photographic light-sensitive material becomes a serious problem unless the addition amount is carefully examined.

[Procedure Amendment 13]

[Document name to be amended] Statement

[Correction target item name] 0040

[Correction method] Change

[Correction content]

Representative commercial antioxidants are shown below. (1) Phenolic antioxidant; SUMILIZER BHT (Sumitomo),
IRGANOX 1076 (Ciba-Geigy), MARK AO-50 (Adeka Argus), SUMILIZER BP-76 (Sumitomo), TOMINOX SS
(Yoshitomi), IRGANOX 565 (Ciba-Geigy), NONOX WSP (IC
I), SANTONOX (Monsanto), SUMILIZER WX R (Sumitomo), AN
TAGECRYSTAL (Kawaguchi), IRGANOX 1035 (Ciba Geigy),
ANTAGE W-400 (Kawaguchi), NOCLIZER NS-6 (Ouchi Shinko), I
RGANOX 1425 WL (Ciba Geigy), MARKAO-80 (Adeka Argus), SUMILIZER GA-80 (Sumitomo), TOPANOL CA
(ICI), MARK AO-30 (Adeka Argus), MARK AO-2
0 (Adeka Argus), IRGANOX3114 (Ciba Geigy), MARK AO-330 (Adeka Argus), IRGANOX 133
0 (Ciba Geigy), CYANOX 1790 (ACC), IRGANOX 1010
(Ciba Geigy), MARK AO-60 (Adeka Argus), SUMILIZER BP-101 (Sumitomo), TOMINOX TT (Yoshitomi)
Etc. (2) Phosphorus antioxidants; IRGAFOS 168 (Ciba Geigy), MA
RK 2112 (Adeka Argus), WESTON 618 (Borg Warner), MARK PEP-8 (Adeka Argus), ULTRANOX 6
26 (Borg Warner), MARK PEP-24G (Adeka Argus), MARK PEP-36 (Adeka Argus), HCA (Sanko), etc. (3) Thioether antioxidant; DLTDP "YOSHITOMI" (Yoshitomi), SUMILIZER TPL (Sumitomo), ANTIOX L (NOF), DMTD
"YOSHITOMI" (Yoshitomi), SUMILIZER TPM (Sumitomo), ANTIOX
M (NOF), DSTP "YOSHITOMI" (Yoshitomi), SUMILIZER TPS
(Sumitomo), ANTIOX S (NOF), SEENOX 412S (Cypro), M
ARK AO-412 S (Adeka Argus), SUMILIZER TP-D
(Sumitomo), MARK AO-23 (Adeka Argus), SANDSTAB
P-EPQ (sand), IRGAFOS P-EPQ FF (Ciba Geigy), IRGANOX 1222 (Ciba Geigy), MARK 329K (Adeka Argus), WES TON399 (Borg Warner), MA
RK 260 (Adeka Argus), MARK 522A (Adeka Argus), etc. (4) Metal deactivator NAUGARD XL-1 (Uniroyal), MARK CDA-1 (Adeka Argus)
Argus), MARK CDA-6 (Adeka Argus), LRGANO
X MD-1024 (Ciba Geigy), CUNOX (Mitsui Toatsu), etc. Particularly preferred antioxidants are phenolic antioxidants, and as commercial products, various Irganox of Ciba Geigy and Sumitizer BHT of Sumitomo Chemical Co., Ltd. Sumilizer BH-7
6, Sumilizer WX-R, Sumilizer BP-101 and the like. In addition, 2,6-di-hibutyl-p-cresol (BHT), a low-volatile high-molecular weight phenolic antioxidant (trade name Iregano
x 1010, Ireganox 1076, Topanol CA, Ionox 330 etc.),
It is effective to use one or more of dilauryl thiodipropionate, distearyl thiopropionate, dialkyl phosphate and the like, especially two or more thereof in combination. In particular, it is effective to use two or more kinds having different actions such as a combination of a hindered phenol antioxidant and a phosphorus antioxidant.

[Procedure Amendment 14]

[Document name to be amended] Statement

[Name of item to be corrected] 0045

[Correction method] Change

[Correction content]

Representative examples of the ethylene copolymer resin are shown below. (1) Ethylene-vinyl acetate copolymer resin (hereinafter EVA
(Represented as resin) (2) Ethylene-propylene copolymer resin (3) Ethylene-1-butene copolymer resin (4) Ethylene-butadiene copolymer resin (5) Ethylene-vinyl chloride copolymer resin (6) Ethylene-methyl methacrylate copolymer resin (7) Ethylene-methyl acrylate copolymer resin (hereinafter,
(Displayed as EMA resin) (8) Ethylene-ethyl acrylate copolymer resin (hereinafter,
(Displayed as EEA resin) (9) Ethylene-acrylonitrile copolymer resin (10) Ethylene-acrylic acid copolymer resin (hereinafter referred to as EAA
(Displayed as resin) (11) Ionomer resin (resin obtained by crosslinking a copolymer of ethylene and unsaturated acid with a metal such as zinc) (12) Ethylene-α-olefin copolymer resin (hereinafter referred to as L-
(Displayed as LDPE resin) (13) Ethylene-propylene-butene-1 terpolymer resin

[Procedure Amendment 15]

[Document name to be amended] Statement

[Correction target item name] 0047

[Correction method] Change

[Correction content]

[0047] L-LDPE (L iner L ow D ensity P oly e tylene)
The resin is called the third polyethylene resin, which has medium and low density,
It is a low-cost, high-strength resin that meets the demands of the times of energy saving and resource saving, which have the advantages of both high-density polyethylene resins. This resin is a low-pressure method or a high-pressure modified method and has ethylene and an α-containing 3 to 13 carbon atoms, preferably 4 to 10 carbon atoms.
It is a copolymer of olefins and is a polyethylene-based resin having a linear straight chain with a short branch. Preferred α-olefins in terms of physical strength and cost are butene-1, octene-1, hexene-1,4-methylpentene-1,
Heptene-1, decene-1, etc. are used. The density is generally considered to be low to medium density polyethylene resin, but most of the commercially available products have a density in the range of 0.87 to 0.97 g / cm ³ . The melt index is often within the range of 0.1-80g / 10 minutes. As the polymerization process of L-LDPE resin, there are a gas phase method using a medium / low pressure apparatus, a solution method, a liquid phase slurry method and an ionic polymerization method using a high pressure improving method apparatus.

[Procedure Amendment 16]

[Document name to be amended] Statement

[Correction target item name] 0049

[Correction method] Change

[Correction content]

Among these L-LDPE resins, the melt index (hereinafter referred to as MI) is particularly preferably 0.8-1 in terms of physical strength, heat seal strength and film formability.
0g / 10min (JIS K-6760), density 0.870-0.940g / cm ³ (JI
S K-6760), and an α-olefin having 6 to 8 carbon atoms in a liquid phase slurry process and a gas phase process.

[Procedure Amendment 17]

[Document name to be amended] Statement

[Correction target item name] 0050

[Correction method] Change

[Correction content]

A particularly preferred representative example is the trade name, in which polyethylene has 6 carbon atoms as an α-olefin side chain.
Of Mitsui Petrochemical Co., Ltd. in which 4 pieces of 4-methylpentene-1 were introduced, and 8 carbon atoms as an α-olefin side chain
MORE of Idemitsu Petrochemical Co., Ltd. which introduced 1 octene-1
There are TAC and DSM's Stamilex and Dow Chemical's Dourex (these are L-LDPE resins obtained by the co-liquid phase slurry process of four companies). A preferred representative example obtained by the low-pressure vapor phase process is the hexene having 6 carbon atoms as the α-olefin side chain.
-1 introduced UCC's TUFLIN and Nippon Unicar
There is TUFTTHENE Co., Ltd., etc.

[Procedure 18]

[Document name to be amended] Statement

[Correction target item name] 0068

[Correction method] Change

[Correction content]

Therefore, in the present invention, fatty acid amide, lower alcohol ester of fatty acid, polyhydric alcohol ester of fatty acid, polyglycol ester of fatty acid, various silicone oils, various coupling agents, various fatty acid metal salts, various antistatic agents, various lubricants. , Various surfactants etc.
The addition of 5% by weight, preferably 0.005 to 3% by weight, particularly preferably 0.01 to 1% by weight, most preferably 0.03 to 0.5% by weight solves the above-mentioned problems and also provides a light-shielding substance essential to the present invention. Improves dispersibility and improves light-shielding ability as well as prevention of spots, prevention of deterioration of photographic properties of photographic light-sensitive materials (prevention of fog and sensitivity irregularity, prevention of friction fog, etc.), prevention of scratches, prevention of melt fracture, We are trying to achieve the prevention of die lip stains and die lip streaks, the generation of wrinkles, the prevention of static marks, and the improvement of moldability.

[Procedure Amendment 19]

[Document name to be amended] Statement

[Name of item to be corrected] 0072

[Correction method] Change

[Correction content]

The following may be added to the resin composition as other additives. [Other examples of additives] (Types of additives) (Examples of substitutes) (1) Plasticizers; phthalates, glycol esters, fatty acid esters, phosphates, etc. (2) Stabilizers: lead-based, cadmium-based , Zinc-based, alkaline earth metal-based, organic tin-based, etc. (3) Flame retardants; phosphoric acid esters, halogenated phosphoric acid esters, halides, inorganics, phosphorus-containing polyols, etc. (4) Fillers: alumina, kaolin, clay , Zeolite, calcium carbonate, mica, talc, titanium oxide,
Silica, etc. (5) Reinforcing agent; glass roving, metal fiber, glass fiber, glass milled fiber, carbon fiber, etc. (6) Foaming agent: Inorganic foaming agent (ammonia carbonate, sodium bicarbonate), organic foaming agent (nitroso type, azo System) etc. (7) Vulcanizing agent; Vulcanization accelerator, accelerating aid, etc. (8) Deterioration inhibitor; UV absorber, antioxidant, metal deactivator, peroxide decomposing agent, etc. (9) Cup Ring agent: Silane-based, titanate-based, chromium-based, aluminum-based, etc. (10) Various thermoplastic resins, polyolefin elastomers, synthetic rubbers, etc.

[Procedure amendment 20]

[Document name to be amended] Statement

[Correction target item name] 0074

[Correction method] Change

[Correction content]

It is also possible to use a photodegradable polymer. For example, an ECO copolymer obtained by copolymerizing ethylene and carbon monoxide in which a carbonyl group is introduced as a photosensitizing group in the main chain during polymerization of polyethylene is used, or a transition metal salt, an oxidation accelerator, a photosensitizer is added as an additive. It is possible to use a material obtained by adding a material or the like to the base polymer and imparting photodegradability thereto. Furthermore, one or more kinds of degradable polymers such as biodegradable polymers, photodegradable polymers, and water-soluble polymers may be used in combination (see JP-A-3-129341).

[Procedure correction 21]

[Document name to be amended] Statement

[Correction target item name] 0075

[Correction method] Change

[Correction content]

Typical examples of the molded article for photographic light-sensitive material of the present invention obtained by molding the above-mentioned light-shielding thermoplastic resin composition are shown below, but the present invention is not limited thereto. (1) Film molded product Single layer film molded product (Fig. 1); Japanese Patent Publication No. 2700/1990, etc. Multilayer coextruded film molded product (Figs. 2 and 3); Single layer film molded product or multilayer coextruded film molded product (FIG. 4); JP-B-63-26697, JP-B-2-2701, JP-B-2-13774,
Japanese Examined Patent Publication No. 2-19225, etc. Packaging materials using the above-mentioned flexible sheets;
Packaging bags (unipack bag, single flat bag, double flat bag, single gusset bag, double gusset bag, etc.), shredding package, bulk package (JP-A-3-53243, JP-A-3-71346) Bulletin, etc.) Package for collective packaging, etc. and for loading light-sensitive material in strips (FIG. 10); JP-A-55-113543, JP-A-60-13386.
JP-A-60-167796, JP-A-2-72347, JP-A-3-47547, JP-A-3-54937, JP-A3-86358, JP-A-3-96648. Bulletins, etc. (2) Vacuum molded products (3) Injection molded products Spools for photographic films, film units with lenses,
Containers for photographic film cartridges, light-shielding containers, plastic photographic film cartridges, light-shielding magazines for loading light chambers, cores, photographic film cartridges, instant film packs, etc. Disc film cartridges; Jitsukai Sho 60-21743
Film unit with lens (Fig. 9); JP-A-63-2266
No. 43, etc. Spool for photographic film (FIG. 7); JP-A-1-251030
JP, JP-A-57-196218, JP-A-59-15049, USP 1930144, JP 63-73742, JP
No. 54-120931, Japanese Utility Model Laid-Open No. 58-178139 to 178145,
JP-B-55-31541, JP-A-58-203436, JP-A-58-82237, JP-A-58-82236, JP-B-58-82236.
44-16777, Japanese Utility Model Publication 63-73742, JP 62-
240957, GB 2199805A, etc. Patrone for photographic film (Fig. 8); JP-A-54-1118
22, JP-B-45-6991, JP-B-55-21089, JP-A-50-33831, JP-A-56-87039, JP-A-55-97738, JP-A-1. −312538, JP 57-190948, USP 4,846,418, USP 4,8
48,693, USP 4,887,776 and the like Containers for photographic film cartridges (FIGS. 5 and 6); JP-A-61-250639, JP-A-61-73947, JP-A-60-163451, USP 4,801,011 No. 63-121
No. 047, Japanese Patent Laid-Open No. 62-291639, No. 1-88940
No. JP, No. 1-113235, No. 1-123337, No. 2-33236, No. 3-48581, No. 2-38939, US Pat. No. 4,639,386,
USP 4,801,011 specification, USP 4,979,351 specification, EP 0
237062A2 Specification, EP 0280065A1 Specification, EP 029
8375A2 Specification, etc. Core, reel; Jitsukai Sho 60-107848 gazette, USP 480992
No. 3 specification, GB 2033873 B specification, etc. Sheet film magazine; Sho 56-5141, etc. Photographic film cartridge (FIG. 11);
No. 0, No. 2-24846, No. 2-29041, No. 60-120448, No. 1-312537, etc. Photographic film case (FIG. 10); USP 4,779,756 specification, Japanese Utility Model Laid-Open No. 54-100617, Japanese Utility Model Laid-Open No. 64-32343, Japanese Utility Model Laid-Open No. 1-94258, Japanese Utility Model Laid-Open No. 2-56139,
EP 0242905 A1 specification, Japanese Patent Publication No. 2-54934, etc.

[Procedure correction 22]

[Document name to be amended] Statement

[Correction target item name] 0078

[Correction method] Change

[Correction content]

Typical synthetic resins used for these inks are vinyl chloride-based copolymer resins, vinyl-amino resins, alkyd-vinyl resins, oil-free alkyd resins, vinyl chloride-based vinyl chloride, and nitrified cotton. , Polyester, polyamide urethane, polyacrylic, rosin-modified maleic acid,
Ethylene vinyl acetate, vinyl ether, urethane vinyl acetate, vinyl chloride vinyl acetate urethane resin, modified alkyd resin, modified phenolic resin, high molecular weight and low molecular weight polyester / amino resin,
Alkali-soluble resin (rosin-modified maleic acid resin, styrene-maleic acid resin, styrene-acrylic acid resin, acrylic acid ester acrylic acid resin, methacrylic acid ester acrylic acid resin), hydrosol type resin (styrene-maleic acid resin, styrene acrylic acid resin) , Α-methylstyrene acrylic acid resin, acrylic acid ester acrylic acid resin,
(Methacrylic acid ester acrylic acid resin), emulsion type resin (styrene resin, styrene acrylic acid ester resin, acrylic acid ester copolymer resin, methacrylic acid ester copolymer resin), as a resin for VU ink, an acrylic unsaturated group is used. Polymers having are generally used, and typical examples are polyester / acrylic acid ester, polyester / urethane resin / acrylic acid ester, epoxy resin / acrylic acid ester, pentaerythritol triacrylate, trimethylolpropane triacrylate, Hexanediol diacrylate, neopentyl glycol diacrylate, triethylene glycol diacrylate, and hydroxyethylene methacrylate can be used.

[Procedure amendment 23]

[Document name to be amended] Statement

[Correction target item name] 0079

[Correction method] Change

[Correction content]

A commonly known coloring agent is used in combination with these inks. As the colorant to be used, various pigments and azo pigments described in JP-A-63-44653 (azo lake; carmine 6B, red 2B, insoluble azo; monoazo yellow (PY-1, 3), disazo yellow ( PY-12, 13, 14, 17, 83), pyrazolo orange (PO
-B-34), vulcan orange (PO-16), condensed azo type; chromophthal yellow (PY-93, 95), chromophthal red (PR-144, 166), polycyclic pigment (phthalocyanine type; copper phthalocyanine) Blue (PB-15, 15-1, 15-
3), copper phthalocyanine green (PG-7), cioxazine type; dioxazine violet (PV-23), isoindolinone type; isoindolinone yellow (PY-109, 11)
0), threnic; perylene, perinone, flavantron, thioindigo, lake pigment (malachite green,
Rhodamine B, Rhodamine G, Victoria Blue B) and inorganic pigments (oxide, titanium dioxide, red iron oxide, sulfate);
Precipitating barium sulfate, carbonate; Precipitating calcium carbonate,
Silicate; hydrosilicate, anhydrous silicate, metal powder; aluminum powder, bronze powder, zinc dust, carbon black, yellow lead,
Ultramarine, navy blue, etc.). Further, these pigments may be added as a light-shielding substance to the above-mentioned resin layer or the like. In addition to these, oil-soluble dyes and dispersible dyes are also used. Other various solvents as necessary as raw materials for ink,
Additives such as a dispersant, a wetting agent, a defoaming agent, a leveling agent, a thickener, a stabilizer, a cross-linking agent and a wax are used. Synthetic resins and colorants used as these inks can be applied as paints on the front and back surfaces of molded products and packages that use them to improve commercial value, improve wear resistance, improve light-shielding properties, improve photographic properties, etc. It is also preferably used for the purpose.

[Procedure correction 24]

[Document name to be amended] Statement

[Correction target item name] 0080

[Correction method] Change

[Correction content]

Photosensitive materials to which the molded article for photographic photosensitive material of the present invention can be applied are shown below. Silver halide photographic light-sensitive material (printing film, color or black-and-white printing paper, color or black-and-white negative film, color or black-and-white positive film, printing master paper, color reversal film, DTR (diffusion transfer) light-sensitive material,
Computer typesetting films and papers, microfilms, movie films, self-developing photographic light-sensitive materials, direct positive film and papers, etc. Thermal development photosensitive materials (thermal development color photosensitive materials, thermal development black-and-white photosensitive materials (for example, Japanese Patent Publication No. 4921, 43-4924, "Basics of Photographic Engineering", Silver Salt Photography (published by Corona in 1879), pages 553 to 555 and Research Tis Closure, June 1978, pages 9 to 15 (RD-17029), etc. Further, JP-A-59-12431 and JP-A-59-12431.
-2950 gazette, the same 61-52343 gazette and U.S. Patent No. 4,584,2
No. 67, a transfer type heat-developable color light-sensitive material, etc.)) Photosensitive / thermosensitive recording material (photothermography (light-sensitive / thermosensitive image forming method) described in JP-A-3-72358, etc.) Recording materials using) Diazonium photographic light-sensitive materials (4-morpholinobenzenediazonium microfilms, microfilms, copying films, printing plate materials, etc.) Azide, diazide photographic light-sensitive materials (paraazidobenzoede, 4,4 ' Photosensitive materials containing diazidostilbene, etc., such as copying films, printing plates, etc. Quinonediazide photographic photosensitive materials (orthoquinonediazide, orthonaphthoquinonediazide compounds, eg benzoquinone (1,2) -diazide- (2) -4 -Photosensitive material containing phenyl ether sulfonate, for example, printing plate material, copying film, adhesion film ) Photopolymer (photosensitive material containing a vinyl monomer such as, printing plate, the adhesion film, etc.) polyvinyl cinnamate-based photosensitive material (e.g., printing film, IC resist etc.)

[Procedure correction 25]

[Document name to be amended] Statement

[Correction target item name] 0082

[Correction method] Change

[Correction content]

[0082]

By applying the surface-treating substance of the present invention to the light-shielding substance, the dispersibility of the light-shielding substance in the resin composition is improved. As a result, the photographic properties of the photographic light-sensitive material are prevented from being adversely affected, the light-shielding ability is dramatically increased, and the occurrence of spots is also reduced. Antioxidants are also used in the present invention. As a result, the oxidative decomposition of the resin can be suppressed, the occurrence of coloring failure can be prevented, and adverse effects such as sensitization / desensitization and fog on the photographic properties of the photographic light-sensitive material can be reduced.

[Procedure Amendment 26]

[Document name to be amended] Statement

[Correction target item name] 0087

[Correction method] Change

[Correction content]

The light-shielding film for a photographic light-sensitive material shown in FIG. 4 is the same as the above-mentioned two-layer coextruded film IIa shown in FIG.
Of the laminated film IVa adhered by blocking.

[Procedure Amendment 27]

[Document name to be amended] Statement

[Correction target item name] 0088

[Correction method] Change

[Correction content]

FIG. 5 (a) is a sectional view of a photographic film cartridge container 4 as a molded article for a photographic light-sensitive material of the present invention. The photographic film cartridge container 4 comprises a container body 5 and a lid 6. Both of the container body 5 and the lid 6 are formed by the photographic material of the present invention. Figure 5 (b)
FIG. 4 is a cross-sectional view of a container body 5 for a photographic film cartridge as a molded product for a photographic light-sensitive material of the present invention, which has a taper in which the inner diameter (A + a) of the upper opening is larger than the inner diameter (A) of the bottom by stacking. It is a molded product for a photographic light-sensitive material of the present invention. FIG. 6 is a perspective view of a photographic film cartridge container 4 as a molded product for a photographic light-sensitive material of the present invention. The photographic film cartridge container 5 includes a container body 5 and a lid 6.
Are integrally formed, and these are formed of the light-shielding thermoplastic resin composition of the present invention.

[Procedure correction 28]

[Document name to be amended] Statement

[Correction target item name] 0091

[Correction method] Change

[Correction content]

FIG. 9 is an exploded perspective view of the film unit with lens 11 as a molded product for photographic light-sensitive material of the present invention.
The lens-equipped film unit 11 is a lower case for further tightly storing the photographic film cartridge 7 for tightly storing the spool 10 around which the photographic film is wound.
12 and an upper case that shields the lower case 12 from light
The spool 10, the lower case 12, and the upper case 13 are formed of the light-shielding thermoplastic resin composition of the present invention.

[Procedure correction 29]

[Document name to be amended] Statement

[Correction target item name] 0093

[Correction method] Change

[Correction content]

FIG. 11 is an exploded perspective view of a photographic film cartridge 15 as a molded product for photographic light-sensitive material of the present invention.
This photographic film cartridge 15 is composed of a lower case 16 and an upper case 17, and a spool 18 loaded therein, and the spool 18, the lower case 16 and the upper case 17 are the light-shielding thermoplastic resin composition of the present invention. It is made of things.

[Procedure amendment 30]

[Document name to be amended] Statement

[Correction target item name] 0095

[Correction method] Change

[Correction content]

Example 1 A two-layer coextrusion inflation light-shielding film molded product corresponding to FIG. Molecular weight distribution (weight average molecular weight (MW)
/ MI (melt index) with a number average molecular weight (MN) of 7.6 is 0.6 g / 10 minutes, density is 0.925 g / cm ³ , and crystallinity is 71.
% Homopolyethylene resin 18% by weight, MI 5.0 g / 10
Min, density 0.88g / cm ³ , molecular weight distribution (MW / MN) 3.6, crystallinity 35%, ethylene unit content 80mol%, butene-1
76.7% by weight of ethylene / butene-1 random copolymer resin with a unit content of 20 mol%, pH 7.0 surface-treated with magnesium stearate, average particle size of 25 mμ, loss on drying in absolute dry conditions of 0.08% by weight Furnace Carbon Black 3
% By weight, erucic acid amide 0.05% by weight, vitamin E 0.05% by weight, tetrakis [methylene-3- (3,5-di-tert-butyl-4
-Hydroxyphenyl) propionate] methane 0.05% by weight of L-LDPE resin composition with a thickness of 50 μm and a black light-shielding thermoplastic resin film layer, and a molecular weight distribution (M
W / MN) is 7.6, MI is 1.0 g / 10 minutes, density is 0.945 g / cm ³ , 20% by weight of homopolyethylene resin having a crystallinity of 78%, MI is
2.5g / 10min, density 0.92g / cm ³ , crystallinity 53%, molecular weight distribution (MW / MN) 3.3, ethylene unit content 95mol%,
Octene-1 ethylene octene with a unit content of 5 mol%
-1 copolymer resin 73.5% by weight, the loss on drying in absolute dry conditions
Titanium dioxide 6% by weight surface-treated with 0.15% by weight dihydric alcohol, silica 0.05% by weight, zinc stearate 0.2
The blow-up ratio is 1.5 for blown film molded products consisting of two layers of a light-shielding thermoplastic resin film layer having a white appearance and a thickness of 50 μm, which is made of an L-LDPE resin composition containing 1% by weight of vitamin E and 0.1% by weight of vitamin E. Molded. The molded product for photographic light-sensitive material of the present invention is a simultaneous two-layer coextrusion light-shielding inflation film molded product having different thicknesses of the inner and outer layers and the resin composition and having a thickness of 100 μm. This two-layer coextrusion blown film molded product is excellent in physical strength, heat sealability, photographic property, light shielding property, flatness, moldability, and appearance. It is possible to distinguish between front and back, white and black appearance. The sealed bag created by heat-sealing the inner layer of the can be identified even under the safelight that wraps the photographic light-sensitive material, and even if left in the sunlight, the temperature inside and outside the bag does not rise, and the bags can be stacked. It was In addition, the outer layer is white and can be identified under safelight, and even if left in the sunlight, the temperature rise on the surface of the bag and inside the bag is small, and the quality of the photographic light-sensitive material is not deteriorated.
As it uses both vitamin E and a light-shielding substance,
It can be improved by 15% or more, the physical strength and the heat seal strength are large, and the decomposition of the resin can be prevented, so that the adverse effects such as the abnormal sensitivity of the photographic properties of the photographic light-sensitive material and the occurrence of fog can be reduced.

[Procedure correction 31]

[Document name to be amended] Statement

[Correction target item name] 0096

[Correction method] Change

[Correction content]

Example 2 A container body for a photographic film cartridge corresponding to FIG. 5A in which the inner wall portion of the container body was shaved by 0.3 mm to have a side wall thickness of 1 → 0.7 mm. 3% by weight of titanium dioxide with 0.5% by weight of calcium stearate and 0.2% by weight under dry conditions, 0.15% by weight of di- (p-methylbenzylidene) sorbitol and 0.01% of o-methylbenzylidene-p-methylbenzylidene sorbitol A masterbatch that covers the surface by weight and is dispersed in 5% by weight of a low density homopolyethylene resin and a polyethylene wax mixed resin (total amount 8.66).
Wt%, masterbatch of titanium oxide concentration 35%) and MI
(ASTM D-1238) 40g / 10min, density (ASTM D-1505) 0.90
g / cm ³ , flexural modulus (ASTM D-790) 10,700 kg / cm ² , Rockwell hardness (ASTM D-785) 88R, propylene content 96.7% by weight, ethylene content 3.3% by weight, average 90.54% by weight of propylene / ethylene random copolymer resin having a molecular weight (weight average molecular weight (MW) / number average molecular weight (MN)) of 3.7, 0.05% by weight of oleic acid amide, and tetrakis [methylene-hindered phenolic antioxidant 3- (3 ・ 5-di-ter
t-Butyl-4-hydroxyphenyl) propionate] methane 0.10% by weight, phosphorus antioxidant trinonylphenyl phosphite 0.05% by weight, UV absorber 2-hydroxy-4-octoxybenzophenone 0.1% by weight, drip-proof Using a propylene ethylene random copolymer resin composition containing 0.5% by weight of diglycerin monostearate as an agent, an injection molding machine having a mold clamping pressure of 150 t for a photographic film cartridge container body corresponding to FIG. Using a hot runner type mold of 24 pieces, it was made in a molding cycle of 7 seconds under the injection molding conditions of a resin temperature of 220 ° C and a cooling water temperature of 20 ° C. Even when the temperature at the time of taking out the container body was 45 ° C., the container body for photographic film patrone had an excellent appearance that could be continuously molded for a long time unattended without causing deformation such as buckling or sink mark and scratches.

[Procedure correction 32]

[Document name to be amended] Statement

[Correction target item name] 0100

[Correction method] Change

[Correction content]

Melt index is 30 g / 10 minutes (ASTM D-12
38), density 0.900 g / cm ³ (ASTM D-1505), crystallinity 87
% Propylene / ethylene random copolymer resin (ethylene content 3.5 mol%) 77.5% by weight, fatty acid amide 0.05
2.0% by weight of aluminum powder surface-treated with 0.2% by weight of magnesium stearate and tetrakis [methylene-3 (3.5-di-tert-butyl-4-hindered as a hindered phenolic antioxidant as an antioxidant. Hydroxyphenyl) propionate] methane 0.05% by weight and n-octadecyl-3- (4'-hydroxy-3 ', 5'-di-tert-butylphenol) propionate 0.05% by weight are used,
Low-crystalline resin MI (ASTM D-1238) 23g / 10min, density (ASTM D-1505) 0.905g / cm ³ , 20% by weight ethylene-butene-1 copolymer resin with crystallinity 23% %, Surface-treated with magnesium stearate as an organic nucleating agent
-Using a propylene-based resin composition containing 0.15% by weight of (methylbenzylidene) sorbitol in an injection molding machine (24 cavities, mold clamping pressure 150t), resin temperature 210 ° C
Cycle film molding process for photographic film cartridge containers
It is an injection-molded article for photographic light-sensitive material, injection-molded in seconds. This injection-molded product had almost no fatal molding failure such as coloring failure or short shot and no deformation, so that continuous unmanned injection molding was possible for a long time.

[Procedure amendment 33]

[Document name to be amended] Statement

[Correction target item name] 0101

[Correction method] Change

[Correction content]

The container body for photographic film cartridges, which is an injection-molded product, has a fast molding cycle, good lubricity between the container bodies, excellent suitability for high-speed air delivery, is resistant to scratches, is excellent in antistatic property, and has excellent dust resistance. The adhesion of the photographic film was small and the suitability for taking the photographic film cartridge in and out of the container body was excellent. In addition, the appearance is silvery and very good.
From the height of the concrete to the floor of the concrete is very high, and especially the impact strength at low temperature below 0 ° C is 0% due to the combined effect of aluminum powder and ethylene-butene-1 copolymer resin. Thus, the container body for a photographic film cartridge of Comparative Product 1 in which the aluminum powder and the ethylene / butene-1 copolymer resin were not added was very excellent in comparison with the occurrence of 6% cracks. In addition, even after storage at 18 ° C for 1 year, there is little bleed-out of lubricants such as oleic acid amide and magnesium stearate on the surface of the container body, and there is little stickiness, dust adhesion, and white powder generation. It was a container body for a photographic film cartridge, which was excellent in lubricity and antistatic property.

[Procedure amendment 34]

[Document name to be amended] Statement

[Correction target item name] 0103

[Correction method] Change

[Correction content]

Example 4 This is a container body for a photographic film cartridge corresponding to FIG. The ethylene / butene-1 copolymer resin of the propylene-based resin composition of Example 3 was 20 → 19% by weight, and the average particle size was 20 mμ after surface treatment with fatty acid amide and magnesium stearate instead of 2% by weight of aluminum powder. , PH
Using a light-shielding propylene random copolymer resin composition containing 3% by weight of furnace carbon black of 7.0, using the same injection molding apparatus and the same mold as in Example 2, at a resin temperature of 210 ° C. for coloring photographic film patrone It is an injection-molded article for a photographic light-sensitive material obtained by injection-molding a container body in a molding cycle of 6 seconds. This photographic film cartridge container body had an excellent appearance capable of continuous unmanned injection molding for a long time without causing a fatal molding failure.

[Procedure amendment 35]

[Document name to be amended] Statement

[Correction target item name] 0105

[Correction method] Change

[Correction content]

Furthermore, although it is black and opaque, no thermal deformation occurs even if the container body is left in the sunlight for 3 hours,
It was excellent in that it was heat-insulating, the temperature inside the container was not so large as in Comparative Product 2, the spool of the film film cartridge for true film was not thermally deformed, and the photographic film was hardly deteriorated. Furthermore, since it is colored black, it has excellent light-shielding properties, and there was no light entry from the drawing port (port port) of the photographic film of Patrone. It was a container body for photographic film cartridges that did not generate substances that would adversely affect the photographic film even after storing it in a low temperature warehouse at 18 ° C for one year, and had little fogging or increased / decreased sensation, and that could maintain excellent photographic properties. .. In addition, substances that easily bleed out, such as lubricants, antioxidants, and nucleating agents, are also adsorbed on the carbon black, causing little bleedout, and causing stickiness, dust adhesion, and white powder generation more than in Example 2. It was excellent in that it was scarcely recognizable to the eyes due to the small amount and a synergistic effect with the black appearance.

[Procedure correction 36]

[Document name to be amended] Statement

[Correction target item name] 0107

[Correction method] Change

[Correction content]

With regard to the characteristics, they are excellent as in Example 3 and, further, because they are square, they have stackability and store display suitability, and can remove the cosmetic small box made of paper, and the CI mark and Since various prints are colored because they are white and opaque, and as described in Example 3, because they are white and opaque, the containers do not undergo thermal deformation even if they reflect sunlight and are displayed in stores. There is little temperature rise in the container, therefore there is little deformation of the spool under high temperature and deterioration of the photographic property of the photographic film, excellent antistatic properties, less bleeding out of lubricant, antioxidant, nucleating agent to the container surface, It is an excellent product with little dust adhesion, and has many industrial waste reduction and after-use applications. Further, it is a high-quality container that prevents the thermal decomposition of the resin and the additives by adding an appropriate amount of the antioxidant, and generates few substances that adversely affect the photographic film.

[Procedure amendment 37]

[Document name to be amended] Statement

[Name of item to be corrected] 0112

[Correction method] Change

[Correction content]

This photographic film spool has a coloring problem,
Almost no fatal molding failures such as short shots and poor light-shielding properties, very good lubricity, good removability from the mold, no deformation, and continuous unmanned injection molding for a long time. became. In order to reduce the drawing torque of photographic film made of conventional polystyrene resin,
Compared to photographic film spools that have been coated with a surfactant on the flange, this injection-molded photographic film spool has a faster molding cycle, less scratches and abrasion, and good sliding properties. The pulling torque of the film was small, and it was particularly effective in a camera of an automatic photographic film winding system, and the winding stop during shooting was greatly reduced, and the battery consumption was greatly reduced. Further, it is excellent in chemical resistance and solvent resistance, and it is preferable for a photographic film used in a developing laboratory handling various chemicals and in a wide temperature range from high temperature to low temperature all over the world.

[Procedure amendment 38]

[Document name to be amended] Statement

[Correction target item name] 0115

[Correction method] Change

[Correction content]

Example 7 A resin photographic film cartridge corresponding to FIG. Using the resin composition of Example 6, the polypropylene resin photographic film cartridge shown in FIG. 8 was prepared by the injection molding method. However, as in Example 6, it was an injection molded product for photographic light-sensitive materials excellent in various characteristics. It was In particular, it has excellent slipperiness and injection moldability, and the torque for feeding and winding the photographic film is small, and there is no failure that stops during shooting.

[Procedure amendment 39]

[Document name to be amended] Statement

[Correction target item name] 0118

[Correction method] Change

[Correction content]

Example 9 Ethylene butene having MI of 20 g / 10 minutes, density of 0.950 g / cm ³ , Izod impact strength of 9 kg · cm / cm, Olsen rigidity of 7500 kg / cm ² , and Vicat softening point of 115 ° C. -1 Random Copolymer Resin 94.55% by Weight, Montylic Acid Melisyl Ester 0.0
5% by weight, 0.2% by weight of zinc stearate, 5% by weight of titanium dioxide surface-coated with hydrous aluminum hydroxide, 1.3,
Using a white ethylene / butene-1 random copolymer resin composition consisting of 0.2% by weight of 2,4-diheptany lidenesorbitol, a rectangular photographic film case with a body-corresponding to FIG. 10 was molded by an injection molding method. This container has excellent drop impact strength without adversely affecting the photographic properties of the photographic light-sensitive material, and its white appearance makes it identifiable even under safelight. Temperature rise was small, the quality of the photographic light-sensitive material did not deteriorate, and almost no water droplets were observed in the container. Also,
The motor load on the screw was reduced by 20% or more, and the variation in thickness was small. Furthermore, since it has excellent sealing and fitting properties and printability, it is possible to eliminate the decorative small box by using various original sealing methods. After being used as a container for photographic film, it can be used as a container for various small items. In addition, it can be reused, and when pelletized and reused, the lid is the same ethylene / butene-1 random copolymer resin composition, so sorting of the lid is not necessary and the physical strength is small. , Was particularly good. Example 10 Melt flow rate (ASTM D-1238) was 20 g / 10 min, density (A
STM D-1505) is 0.963 g / cm ³ of high density homopolyethylene resin, and pentaerythrityl tetrakis [3- (3 ・ 5-diethylene) which is a hindered phenol antioxidant as an antioxidant.
-t-Butyl-4-hydrocyclophenyl) propionate] methane 0.1% by weight and the phosphorus-based antioxidant tris (2,4-di-t-
Butylphenyl) phosphite 0.05% by weight, 1.3,2.4-di (paramethylbenzylidene) sorbitol (Nippon Rika KK, Gelol MD) 0.2% by weight as an organic nucleating agent, calcium stearyl lactate 0.1% by weight and erucic acid as a lubricant. Surface-coated with 0.05% by weight of amide, 0.2% by weight of zinc stearate, average particle size 21mμ, pH 8.0, oil absorption 87ml / 100g, sulfur content 0.3% by weight, volatile component 0.3
1% by weight of oil furnace carbon black,
A homopolyethylene resin composition consisting of 0.2% by weight of A-type zeolite was used. Then, using a toggle injection molding machine with a mold clamping pressure of 150 tons {made by Sumitomo Heavy Industries, Nestal (trade name)} and a hot runner mold with 24 cavities at a resin temperature of 200 ° C, the photographic film shown in Fig. 5 (a). A container body for patrone was created.A vertical streak-like rough surface with a height difference of 0.25 μm was formed on the inner wall surface of the container body, and a grid-like rough surface with a height difference of 0.15 μm was formed on the outer wall surface of the container body. The container body of the present invention has improved uniform dispersibility of carbon black and has good photographic properties of the photographic light-sensitive material (there is less fog and less sensitivity fluctuation).
The light-shielding ability was excellent, there were no coloring failures, there were almost no spots, fatal molding failures did not occur, and continuous unmanned injection molding for a long period of time had an excellent appearance. In addition, the effect of forming a vertical streak-like rough surface with a height difference of 0.25 μm on the inner wall surface of the container body is added, buckling and sink marks are not generated, and sound is generated even when the core comes off from the container body. I didn't.

[Procedure amendment 40]

[Document name to be amended] Statement

[Name of item to be corrected] 0119

[Correction method] Change

[Correction content]

[0119]

INDUSTRIAL APPLICABILITY According to the present invention, the uniform dispersibility of the light-shielding substance is improved, it is possible to prevent the photographic property of the photographic light-sensitive material from being adversely affected, the light-shielding ability is improved, and the coloring failure is reduced. Since the occurrence of spots is reduced, the appearance can be improved.

[Procedure Amendment 41]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 5

[Correction method] Change

[Correction content]

FIG. 5 is a cross-sectional view of a photographic film container which is an example of a molded product for a photographic light-sensitive material of the present invention. (B) is a cross-sectional view of a photographic film container body having a taper in which the inner diameter of the upper opening is larger than the inner diameter of the bottom by α.

[Procedure amendment 42]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 5]

[Figure 6]

[Figure 7]

[Figure 8]

[Figure 9]

[Figure 10]

FIG. 11

[Fig. 12]

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location B65D 85/84 7445-3E

Claims (7)

[Claims] 1. A molded product for a photographic light-sensitive material, comprising a light-shielding thermoplastic resin composition containing at least a light-shielding substance surface-treated with a surface-treating substance and an antioxidant. 2. A surface-treated substance having a pH of 6.
2. A photographic light-sensitive material according to claim 1, which comprises a light-shielding thermoplastic resin composition containing at least 0 to 9.0, carbon black having an average particle diameter of 10 to 120 m [mu], a thermoplastic resin, and a phenolic antioxidant. Molded products 3. The surface treatment substance is a lubricant, an antistatic agent, hydrous aluminum oxide, hydrous silicon dioxide, a dihydric to tetrahydric alcohol, a surfactant, an organometallic chelate compound, a coupling agent, and a softening point of 90 ° C. or lower. 3. A molded product for a photographic light-sensitive material according to claim 1, which is one or more of hydrocarbons and silicone oils. 4. A molded product for a photographic light-sensitive material according to claim 1, which contains two or more kinds of thermoplastic resins having a difference in softening point of 10 ° C. or more. 5. The surface-treated surface-treated substance has an oil absorption of 50 ml / 100 g or more, a volatile component of 3.5% or less, and a sulfur component of
5. A molded article for a photographic light-sensitive material according to claim 2, comprising a light-shielding thermoplastic resin composition containing at least 0.9% of carbon black, a thermoplastic resin, and a phenolic antioxidant. 6. An ester of an aliphatic monocarboxylic acid having 20 to 40 carbon atoms and an aliphatic monohydric alcohol having 20 to 40 carbon atoms 0.00
Molded article for photographic light-sensitive material comprising a light-shielding thermoplastic resin composition containing at least 1 to 0.5% by weight and a light-shielding substance at 0.01 to 30% by weight 7. A molecular orientation light-shielding heat having a tear strength in a direction perpendicular to (A) / a tear strength in a molecule orientation direction (A) ≧ 2, which contains at least a light-shielding substance surface-treated with a surface-treating substance and an antioxidant. A light-sensitive film provided with a plastic resin film is used as an easily-openable cover member.