JP2002055415A - Member for photographic sensitive material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a member for a photographic sensitive material which is not deformed and retains its performance because of satisfactory heat resistance even after it is allowed to stand temporarily in a hot environment such as the inside of a car in the summer daytime and heated to a high temperature, does not damage an incinerator and produces no poison gas even in incineration and is finally biodegraded and causes no environmental problem even when it is allowed to stand in the natural world. SOLUTION: The member for a photographic sensitive material comprises a crystalline biodegradable resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic light-sensitive material member, and more particularly to a photographic light-sensitive material material which has various functions necessary as a resin molded member for the photographic light-sensitive material and has sufficient heat resistance. Even when exposed to a high-temperature atmosphere as a member, it does not affect the photographic light-sensitive material, can fulfill the function required as a member, and has little adverse effect on the environment when disposed. .

[0002]

2. Description of the Related Art In recent years, due to the rapid spread of instant films and the increase in the amount of photographic light-sensitive materials that can be used to obtain photographic images immediately on the spot after photographing, there is little or no impact on the environment. There is an increasing demand for injection molded members for photographic photosensitive materials. For example, a lens-equipped film (for example, a trade name: Snap-in) is being collected, reused, and recycled. For example, when used overseas, it is difficult to collect 100%. In addition, an instant film pack (mono-sheet type or peel apartment type: for example, product name: In-Stacks m) used in the instant photo system
Ini, ACE, etc.), after use, the film pack case housing the film unit is discarded.
Therefore, with the spread of instant photo systems,
A large amount of film pack cases will be generated as waste, and it is required to reduce the environmental impact of the discarded film pack cases.

On the other hand, a camera or a film with a lens is sometimes used after being temporarily exposed to a high-temperature atmosphere such as in a car in the middle of summer. Therefore, members constituting the instant film pack loaded into the camera or before being loaded into the camera, constituent members such as a housing of a film with a lens, and the like are required to have a characteristic of less deformation at high temperatures. . In particular, in a state where a stress is applied, when exposed to a high temperature, the creep caused by the stress becomes remarkable, so that a member that cannot perform its function when deformed, for example, in a film pack case of an instant film pack The elastic plate, which will be described later, has high heat resistance so that it does not deform even after storage at high temperature, presses the film unit with a predetermined pressing force, and does not hinder the discharge of the film after shooting. Is required.

As described in Japanese Patent Application Laid-Open No. H11-119332, for example, a case for an instant film pack which requires the above-mentioned characteristics has a high heat resistance obtained by blending polyphenylene ether with polystyrene. The material is adopted and molded by injection molding. Members molded using these synthetic polymers are stable against light, heat, various chemicals, microorganisms, etc.
This is very excellent from the viewpoint of ensuring the function of the photographic material stored in the case for a long period of time. However, members made of synthetic polymers such as polyphenylene ether and polystyrene generate a large amount of heat when burned, and when burned in large quantities, affect the durability of incinerators. It is also stable, does not decompose or rot, and poses a problem for environmental protection.

[0005] Therefore, Patent Publication No. 2731972 discloses that as a packaging material for a photographic light-sensitive material, a substance having microbial degradability and / or photodegradability and having no detrimental effect on the photographic light-sensitive material is not generated. It has been proposed to use compositions of synthetic polymers. The degradable polymer described in the publication has an ester group, an alcohol group, an ether group, an amide group, a urethane bond, an imide bond, and the like. In addition, since these polymers contain a large number of oxygen atoms in the molecule, the calories burned are lower than those of synthetic polymers such as polystyrene.

[0006] These biodegradable polymers are:
Although it has the desirable property that it is buried in the ground and eventually decomposed when discarded, it is difficult to obtain the heat resistance required as a material for the instant film pack case. This is because the introduction of a structure (for example, a benzene ring or a naphthalene ring) capable of increasing the heat resistance by restricting the movement of the polymer molecular chain into the polymer molecule has a problem that the biodegradability is impaired.

Accordingly, the applicant of the present invention has previously filed an application for a member for a photographic light-sensitive material formed using a degradable polymer (Japanese Patent Application No. 11-169538). Furthermore, the case for an instant film pack, wherein the container body, the upper light-shielding sheet and the elastic plate are made of a degradable resin such as a modified starch resin, and the elastic plate contains an inorganic fibrous filler, was filed earlier. (Japanese Patent Application 2000-
95522).

[0008] However, these previously proposed members for photographic light-sensitive materials have the expected performance in terms of biodegradability, but are required depending on the environment in which the members for photographic light-sensitive material are placed. In some cases, it was not possible to sufficiently respond to heat resistance. In particular, when it is left inside a car during a summer day and heated in a high-temperature atmosphere, the required performance may not be exhibited in some cases.

[0009]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a device having a sufficient heat resistance so that it is temporarily left in a high-temperature environment such as a car during a summer day, and even after being heated to a high temperature. It is not deformed, does not impair the performance as a material for photographic photosensitive materials, does not damage the incinerator even when incinerated at the time of disposal, does not generate harmful gas, and can be finalized even if left in nature It is an object of the present invention to provide a member for a photographic light-sensitive material, which is decomposed by microorganisms and does not cause environmental problems.

[0010]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a member for a photographic light-sensitive material comprising a crystalline biodegradable resin. It is preferable that the crystalline biodegradable resin is an aliphatic polyester. It is preferable that the crystalline biodegradable resin contains 1 to 50% by mass of an inorganic fibrous filler.

Hereinafter, the member for a photographic light-sensitive material of the present invention (hereinafter referred to as "member of the present invention") will be described in detail.

In the present invention, the photographic light-sensitive material means various photographic films such as a negative film and a reversal film, photographic paper, a monosheet or a peel-apart type instant photographic film. In the present invention, the member for a photographic material is a container having a function of storing, packaging, covering, protecting, transporting, storing, supporting a form, etc., a cover and an accompanying part attached to the photographic material, or the photographic material. It refers to various members constituting a pack for an instant film, a film with a lens, and the like by loading a photosensitive material. Specifically, 135, 110, 120, 220
Component members such as a container body, a lid, or a spool of a negative or reversal film of various standards such as, or a case for a film pack of an instant film (for example, a container body, a light shielding sheet, an elastic plate, a flexible light shielding sheet, a light shielding Components, such as a piece, a bottom light-shielding sheet), a housing of a film with a lens, and mechanical components.

The crystalline biodegradable resin constituting the member of the present invention is a biodegradable resin having crystallinity. In the present invention, the term “biodegradable resin” refers to a resin that is finally decomposed into inorganic substances such as water and carbon dioxide by the action of microorganisms existing in nature, and is referred to as ISO14851, ISO14852.
Alternatively, it is a biodegradable resin whose test method is described in ISO14855 or the like. ISO14851 or IS
O14852 specifies biodegradability in aerobic water systems,
In ISO14851, oxygen consumption and ISO148
At 52, the decomposition rate is determined from the amount of carbon dioxide generated,
A substance that reaches a decomposition rate of 60% or more in a maximum of 6 months. Also, according to ISO 14855, it means that it decomposes by 70% or more in a maximum of 6 months from the amount of carbon dioxide generated under compost conditions.

In the present invention, the resin having crystallinity means a resin having a definite melting point, for example, a crystal melting point is clearly measured as an absorption peak by DSC. The crystalline resin used in the present invention preferably has a crystalline melting point of 90 ° C. or higher. A resin having a low crystal melting point is preferable in that the temperature during molding may be low. However, in a resin having a crystal melting point lower than 90 ° C., a temperature at which some of the molecules constituting the resin are 10 to 15 ° C. lower than the melting point. For example, heat resistance in a high temperature state, such as in a car in summer, cannot be expected because free movement starts from the beginning. In a molded product made of a resin having a crystalline melting point, in a temperature range sufficiently lower than the melting point, the movement of polymer molecules is suppressed by the presence of crystals, so that creep becomes difficult, and as a result, heat resistance is improved.

Further, since the member of the present invention is manufactured by a step of forming a resin by heating and melting the raw material resin, the formation of crystals during the forming has a great effect on the heat resistance of the obtained member. In order to impart practical heat resistance to the molded article, it is desirable that a sufficient amount of crystals be generated and grown in the molding step. The amount of crystals generated during molding can be roughly estimated from the heat of crystallization.
Those having a heat of crystallization of 20 J / g or more are preferred. The heat of crystallization can be measured by DSC.

Examples of the crystalline biodegradable resin used in the present invention include aliphatic polyesters. Among them, a molded article having appropriate crystallinity and excellent mechanical strength can be obtained. A resin containing polybutylene succinate as a main component has preferable characteristics.

In the present invention, when an inorganic fibrous filler is added to the crystalline biodegradable resin, the elastic modulus increases, and as a result, the deformation received at a high temperature is easily recovered together with the release of stress, and the heat resistance is improved. More preferred. Examples of the inorganic fibrous filler used include carbon fiber, glass fiber, aluminum fiber, alumina fiber, boron fiber, silicon carbide fiber, stainless steel fiber, nickel fiber, brass fiber and the like. These may be used alone or in combination of two or more. Among these, glass fibers and carbon fibers are preferable because the effect of improving the elastic modulus is particularly excellent.

PAN is used for the carbon fiber depending on the manufacturing method.
There are a system and a pitch system, and both can be used for the member of the present invention. Among them, a PAN system is preferable. Specific examples of the PAN-based carbon fiber include Pyrofil chopped fiber manufactured by Mitsubishi Rayon, Vesfight manufactured by Toho Rayon, and the like.

Examples of the glass fibers include chopped strand glass fibers marketed by Asahi Fiber and Nippon Glass Fiber.

When the member of the present invention contains an inorganic fibrous filler, its content is preferably from 1 to 50% by mass, particularly preferably from 5 to 50% by mass, since the brittleness of the molded article of the member becomes remarkable. 45% by mass. If the content of the inorganic fibrous filler is too large, the effect obtained compared to the cost is reduced, and if it is too small, the desired effect is not exhibited.

In the case where the member of the present invention is a member required to be light-tight to light, such as a container for a photosensitive material such as a film, if the member contains a light-shielding substance, preferable.

The following are mentioned as light-shielding substances to be used. (1) Inorganic compound 1) Oxide: silica, diatomaceous earth, alumina, titanium dioxide, iron oxide, zinc oxide, magnesium oxide, antimony oxide, barium ferrite, strontium ferrite, beryllium oxide, pumice, pumice balloon, alumina fiber, 2 3) Carbonate: calcium carbonate, magnesium carbonate, dolomite, dawsonite 4) Sulfate or sulfite: calcium sulfate, barium sulfate, ammonium sulfate, calcium sulfite 5) Silicate: talc, clay, mica, asbestos, glass fiber, glass balloon, glass beads, calcium silicate, montmorillonite, bentonite 6) Carbon: carbon black, graphite, carbon hollow sphere 7) Other: iron powder , Copper powder, lead powder, tin powder, stainless steel powder, pearl pigment, aluminum powder, aluminum flake, molybdenum sulfide, potassium titanate, lead titanate,
Lead zirconate, zinc borate, barium metaborate, calcium borate, sodium borate, aluminum paste

(2) Organic compounds 1) Wood flour: pine wood flour, oak wood flour, sawdust 2) Shell fiber: almond shell fiber, peanut shell fiber, rice hull fiber 3) Various colored fibers: cotton, jute, Paper flakes, cellophane flakes, nylon fibers, polypropylene fibers, starch, aromatic polyamide fibers Among these light-shielding substances, carbon black is particularly preferable, and it is also preferable to mix titanium dioxide for the purpose of adjusting the color tone.

The method for producing the members of the present invention is not particularly limited, and each member is formed by using the above-mentioned crystalline biodegradable resin and various materials such as light-shielding substances to be blended as required. These can be manufactured by assembling these while accommodating a photographic photosensitive material. At this time, the member of the present invention is formed by, for example, injection molding using a material in which an inorganic fibrous filler is blended together with the crystalline biodegradable resin. Also, the dimensions, shape, etc. of each member are
It is appropriately determined according to the required strength and characteristics, the location, and the like.

Hereinafter, the elastic plate of the instant film pack case (hereinafter referred to as "film case") shown in FIG. 1 will be described as an example of the member of the present invention.

The instant film pack 1 shown in FIG.
Has a container body accommodating therein a film unit 2 composed of a plurality of instant films, and an upper light-shielding sheet 3 and an elastic plate 4 inserted or arranged in the container body as basic constituent members.

The container body has an exposure opening 5 on the upper surface,
It has two or more pressing openings 6 on the bottom surface. The container main body includes two members, a frame 7 having an exposure opening 5 and a back cover 8 having a pressing opening 6 and attached to the frame. The exposure opening 5 receives an exposure light beam from a lens of the camera when a photograph is taken by loading the instant film pack into the camera. A pressing member (not shown) is inserted into the pressing opening 6 when the instant film pack is loaded into the camera. Further, on the side of the container body, there is provided a film outlet 9 through which the instant film is discharged one by one after the photographing is completed, and on the side of the container body opposite to the film outlet, a film extrusion member is provided. An insertion opening 10 is provided. A flexible light-shielding sheet 11 fixed to one side of the container body is provided at the film outlet 9, and a light-shielding piece (not shown) fixed to one side of the container body is also provided at the insertion opening. It has a role of blocking light from entering the instant film of the container body from each opening.

The upper light-shielding sheet 3 is inserted into the exposure opening 5 side in the container body, is positioned on the upper surface of the film unit 2, and is exposed to light incident from the exposure opening 5 until the instant film pack is loaded into the camera. It has a role of shielding the film unit from being exposed. When the instant film pack is loaded in the camera, the upper light-shielding sheet 3 is removed from the container body.

The elastic plate 4 is disposed inside the bottom surface inside the container body, and is a pressing member inserted from the camera side through the pressing opening 6 on the bottom surface of the container body when the instant film pack is loaded into the camera. And presses the film unit 2 housed in the container body toward the exposure opening of the container body, and the exposure film 5, ie, the top instant film toward the front of the camera, is substantially flush. Is a member having elasticity for pressing the film unit 2 as described above. When the elastic plate 4 is heated by being exposed to a high-temperature atmosphere such as when the instant film pack is left in a car in summer, the elastic plate 4 does not exert a predetermined pressing force due to pressing of the pressing member due to heat deformation at a high temperature or the like. In such a case, the film cannot be uniformly pressed into the exposure opening, and it is difficult to smoothly discharge the film after photographing from the film discharge port.

The elastic plate 4 is mainly made of the above-mentioned crystalline biodegradable resin, has the required heat resistance and mechanical strength, and has a pressing member even after being temporarily exposed to a high temperature. By pressing the film unit, the film unit can be uniformly pressed toward the exposure opening, and the film after photographing can be smoothly discharged.

The elastic plate presses the film unit toward the exposure opening 5 and also functions to prevent light from leaking from the bottom side of the container body to prevent the film unit from being exposed (light shielding). Function). In the case of the present invention, a bottom light-shielding sheet 12 may be further provided to improve the light-shielding function. Further, the bottom light shielding sheet may also function as an elastic plate.

The elastic plate, which is a specific example of the member of the present invention, is not limited to the embodiment shown in FIG. 1 but includes various embodiments. For example, in the case of the present invention, the frame body and the back cover may be integrally formed in the container body.

In the film case shown in FIG. 1, the elastic plate is preferably made of the crystalline biodegradable resin, and the container body and the light shielding sheet are preferably made of the degradable resin. Further, the flexible light-shielding sheet, the light-shielding piece, the bottom light-shielding sheet, and the like do not have to be decomposable, but are preferably decomposable.

The degradable resin constituting the container body and the light-shielding sheet is a polymer having a property of being decomposed, photodegraded or thermally decomposed by microorganisms when discarded in the natural world, and is biodegradable or photo / thermally degradable. A polymer or a polymer that has both biodegradability and photo / thermal degradability. In the present invention, the biodegradable polymer also includes the crystalline biodegradable resin and other biodegradable polymers.

As the degradable polymer, a biodegradable or photo- and heat-decomposable polymer may be used alone, or a polymer having both a biodegradable polymer and a photo- and heat-decomposable polymer may be used. May be used alone or in combination of two or more.

Further, these degradable polymers and non-degradable polymers may be combined to give a required degradability. For example, a linear aliphatic hydrocarbon (for example, a linear aliphatic hydrocarbon having 8 to 32 carbon atoms), an aliphatic polyester (for example, poly) is added to a non-degradable polymer or a mixture of a non-degradable polymer and a degradable polymer. Degradability can be obtained by adding a biodegradable plasticizer such as caprolactone, polyglycolic acid, polyuric acid or a derivative thereof such as an ester thereof, and the like.

Further, when the elastic plate, the container body and the light-shielding sheet, and the flexible light-shielding sheet, the light-shielding piece, the bottom light-shielding sheet and the like are made of a degradable polymer, the degradable polymer promotes microbial degradation. An agent may be used. Examples of the promoter of the microbial degradation include a master batch obtained by blending various starches such as corn starch, potato starch, rice starch, or modified starches thereof with a polymer at a high concentration.

These degradable polymers may be used alone or in combination of two or more. Among these, those containing a modified starch resin capable of obtaining a relatively high softening point in an amount of 80% by mass or more are preferable in that the heat deformation is small, and the heat deformation temperature (load 18.5 kg) is particularly preferably 70 ° C or more, more preferably. It is preferable to use a resin having a heat deformation temperature of 80 ° C. or more.

[0039]

EXAMPLES Examples and comparative examples of the present invention will be described below.
The present invention will be described more specifically. The present invention is not limited to these examples. In addition, the heat resistance test performed in each example was performed according to the following method.

Measurement of Melting Point A resin (20 mg) was placed on a tray of DSC (SSC / 5200, manufactured by Seiko Instruments Inc.), and the temperature was raised at a rate of 1
The temperature is raised at 0 ° C./min, and the endothermic peak of melting is read and set as the melting point.

Heat resistance test Modified starch resin (Cornpole M2, manufactured by Nippon Cornstarch) mixed with 0.5% by mass of carbon black is dried in an oven at 80 ° C. for 5 hours. This is supplied to an injection molding machine (SG100M-HP type manufactured by Sumitomo Heavy Industries),
The container body, top light-shielding sheet, bottom light-shielding sheet, and back cover of the instant film pack case shown in FIG. 1 are formed.

By combining the obtained container body, top light-shielding sheet, bottom light-shielding sheet, and back lid with the elastic plate formed in each example, a case for a film pack is prepared, and a mono-sheet type instant film is formed inside. (INST
AX® mini) was incorporated to produce an instant film pack. At this time, the number of films that can be loaded in the instant film pack case is checked.

This instant film pack was loaded into an instant camera (trade name: Cheki, manufactured by Fuji Photo Film Co., Ltd.) and left in a constant temperature bath at 70 ° C. for 4 hours.
Cool to room temperature and try to shoot. As a result, if there is no problem from the discharge of the light shielding plate to the discharge of the photographed film, if it is possible to shoot with all the loaded films,
"No problem" regarding heat resistance.

Example 1 Polybutylene succinate (manufactured by Showa Polymer Co., Ltd., Bionole # 1903) was mixed in advance with carbon black (manufactured by Mitsubishi Chemical Corporation, # 950) at a ratio of 1% by mass. The prepared pellets were dried in a 75 ° C. oven for 5 hours. Using this resin pellet,
The melting point was measured.

Next, the pellets were supplied to an injection molding machine (manufactured by Sumitomo Heavy Industries, SG100M-HP type) to form an elastic plate. At this time, from the elastic modulus of the material to be used, calculate a thickness exhibiting almost the same elasticity as the current elastic plate made of the current non-biodegradable material (modified PPE), and select a mold having a thickness close to that. Then, an elastic plate was formed using the mold.
As a result, the thickness is 0.4 m compared to the current product made of modified PPE.
m increased. A heat resistance test was performed using this elastic plate.
Table 1 shows the measurement results of the melting points of the resins and the results of the heat resistance test.

Example 2 Pellets of polybutylene succinate (Showa Polymer Co., Ltd., Bionole # 1903) were dried in an oven at 75 ° C. for 5 hours. Carbon fiber (Toho rayon, Vesfight HTA-C6-S) was added at a ratio of 10 parts by mass to 90 parts by mass of the resin pellet.
The mixture was fed to a single-screw extruder having a full flight screw having a diameter of 40 mm and L / D = 27, melt-kneaded, extruded into strands, cooled with water, and cut to obtain pellets containing carbon fibers. The melting point was measured using the pellets.

Next, after drying the pellets, the pellets are supplied to an injection molding machine (SG100M-HP type manufactured by Sumitomo Heavy Industries), and the same non-biodegradable material (modified PPE) as in Example 1 is used.
An elastic plate having a thickness substantially equivalent to the elasticity of the current elastic plate manufactured in the above was prepared. This elastic plate showed the same elasticity as a conventional elastic plate not made of a biodegradable resin. A heat resistance test was performed using this elastic plate. Table 1 shows the measurement results of the melting points of the resins and the results of the heat resistance test.

Example 3 Instead of polybutylene succinate, the resins shown in Table 1 were used, and the polybutylene succinate resin pellets and carbon fiber were mixed without using a single screw extruder to mix the biodegradable resin and carbon fiber. An elastic plate was prepared in the same manner as in Example 1 except that the fibers were supplied to an injection molding machine and the materials were mixed only with the screws of the molding machine. When the surface of the obtained elastic plate was observed finely, a portion where the dispersion of carbon fibers was uneven was found. A heat resistance test was performed using this elastic plate. Further, the melting point of the used resin was measured. Table 1 shows the results.

(Examples 4 to 8) In each of the examples, except that the crystalline biodegradable resin, the inorganic fibrous filler and the additives shown in Table 1 were used in the proportions shown in Table 1, Similarly, an elastic plate was prepared and a heat resistance test was performed. Further, the melting point of the used resin was measured. Table 1 shows the results.

Comparative Example 1 80 parts by mass of a modified starch resin (manufactured by Nippon Cornstarch Co., Ltd .: Cornpol M2) were mixed with carbon fiber (Toho Rayon: Vesfight HTA-C6-).
S) at a ratio of 20 parts by mass, a diameter of 40 mm, and L / D = 2
The mixture was fed to a single-screw extruder equipped with a screw No. 7, melt-kneaded, extruded into strands, cooled with water, and cut to obtain pellets containing carbon fibers. Next, using the pellet, an injection molding machine (SG100M manufactured by Sumitomo Heavy Industries, Ltd.)
-HP type) to prepare an elastic plate, and subjected to a heat resistance test. Further, the melting point of the used resin was measured. Table 1 shows the results
Shown in

(Comparative Examples 2 to 6) In each example, as shown in Table 1, an elastic plate was prepared in the same manner as in Example 1 except that a resin, an inorganic fibrous filler, and an additive were used. A heat resistance test was performed. In addition, measurement of the melting point of the used resin was attempted. Table 1 shows the results.

[0052]

[Table 1]

[0053]

[Table 2]

Note * Kneading method of resin and inorganic fibrous filler A: Kneading in advance B: Kneading directly in an injection molding machine * Heat resistance test: 70 ° C x 4 hours * The thickness of the elastic plate is determined by the elasticity of the molded product. Was adjusted to be almost constant.

[0055]

The photographic light-sensitive material member of the present invention has sufficient heat resistance, so that it is temporarily left in a high-temperature environment such as an automobile during a summer day, and deforms even after being heated to a high temperature. Without injuring the performance as a material for photographic photosensitive materials, and does not damage the incinerator even when incinerated at the time of incineration, does not generate harmful gas, and eventually remains in the natural world even if left in nature Degraded by microorganisms, there is no risk of causing environmental problems.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view illustrating an elastic plate of an instant film pack case, which is an example of a member for a photographic photosensitive material of the present invention, and other components.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instant film pack 2 Film unit 3 Top light-shielding sheet 4 Elastic plate 5 Exposure opening 6 Pressing opening 7 Frame 8 Back lid 9 Film discharge opening 10 Insertion opening 11 Flexible light-shielding sheet 12 Bottom light-shielding sheet

Claims (6)

[Claims] 1. A member for a photographic light-sensitive material comprising a crystalline biodegradable resin. 2. The member for a photographic material according to claim 1, wherein the crystalline biodegradable resin is an aliphatic polyester. 3. The member for a photographic material according to claim 1, wherein the crystalline biodegradable resin is a resin containing polybutylene succinate as a main component. 4. The member for a photographic material according to claim 1, wherein the crystalline biodegradable resin contains 1 to 50% by mass of an inorganic fibrous filler. 5. The member for a photographic material according to claim 4, wherein the inorganic fibrous filler is glass fiber. 6. The photographic light-sensitive material member according to claim 4, wherein the inorganic fibrous filler is a carbon fiber.