JPH07104432A - Packing body for photographic material - Google Patents

Abstract

PURPOSE:To prevent the packing body from being dusty, facilitate the disposal of it, and thereby cope with environmental problems by forming the packing body out of paper as base material, and setting its dusty characteristics within a specified range. CONSTITUTION:A packing 13 made of foamed polyethylene is set in an inner box 12 within the outer box 11 of a packing body 10 for photographic material, glass substrate photographic material 15 held by paired spacers 14 made of polypropylene are housed in over the packing 13, the packing 10 made of foamed polyethylene is rested thereon, and an intermediate box 17 is inserted between the outer box 11 and the inner box 12 to cover the packing body. In this case, the outer box 11, the inner box 12 and the intermediate box 17 are formed out of corrugated board as a base, and calendered paper 18 is attached to the respective end faces. In this case, dusty characteristics in the surface of the base shall be in a range of 0 to 60 pieces/ft<3>. Besides, it is desirable that the surface of the base is smoothed, is treated by a laminate process for a resin film, or is applied with resin so as to be impregnated with resin, and its smoothness shall be equal to or more than 5sec.

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 package for storing a wide band-shaped or sheet-shaped photographic light-sensitive material, and more particularly to a package for storing a photographic light-sensitive material which requires high resolution.

[0002]

2. Description of the Related Art Photographic light-sensitive materials can be roughly classified into wide band-like and sheet-like forms. As a method for packaging a wide band-shaped photographic light-sensitive material, for example, Japanese Patent Publication 4-
As described in Japanese Patent No. 45815, a mode in which the photographic light-sensitive material is housed in a cartridge having a structure capable of being pulled out from a slit opening while keeping the light-shielding property, or the wide-width strip-shaped photographic light-sensitive material is wrapped with a light-shielding and moisture-proof packaging material. Has been taken. Further, in the case of a sheet-shaped photographic light-sensitive material, it is a general packaging method that it is packaged with a light-shielding and moisture-proof packaging material and then stored in a package such as a designed box. In this way, when packaging the photographic light-sensitive material, items to be particularly noted include, in addition to the light-shielding property and the moisture-proof property, preventing the inclusion of dust or dust, or preventing the generation of dust or dust. . In particular, when the photographic light-sensitive material to be packaged requires high resolution, dust adherence to the photographic light-sensitive material is a fatal defect and must be handled with great care.

Particularly, when packing a photographic light-sensitive material having a resolving power of 50 to 500 lines / mm used for making a mask for electronic parts, a shadow mask for a television CRT, a lead frame, etc., the cleanliness of the work is class 100. It is required to be performed under the following environment. Therefore, when the package of the photographic light-sensitive material is brought into the workplace, it is the actual situation that the dust attached to the surface of the package is removed by air spray and then brought into the workplace. Therefore, once the dust is removed from the package of the photographic light-sensitive material that requires high resolution, a plastic material is used that produces less dust from the package itself. However, in recent years, due to environmental problems and the like, there has been a problem that it is not desirable to use plastic having a problem in disposal.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to use paper which is easy to dispose of to deal with environmental problems, and to dispose of dust suitable for storing a photographic light-sensitive material which requires high resolution. An object of the present invention is to provide a package for a photographic light-sensitive material that suppresses the generation. A further object of the present invention is to provide a light-weight, easy-to-handle and inexpensive package for a photographic light-sensitive material.

[0005]

As a means for solving the above-mentioned problems, the present invention provides a package for a photographic light-sensitive material,
(1) A package containing a photographic light-sensitive material using paper as a base material, wherein at least one surface of the base material has a dust generation property of 0 to 60.
It is characterized in that it is in the range of pcs / ft ³ .

Further, the photographic light-sensitive material package is (2) a package containing a photographic light-sensitive material using paper as a base material,
The smoothness of at least one surface of the base material is 5 sec or more.

Further, in a preferred embodiment, at least one surface of the base material is smoothed, formed by laminating with a resin film, formed by applying resin, and impregnated with resin. The photographic light-sensitive material package according to the above (1) or (2), which is formed by any of the above.

[0008]

EXAMPLES The paper which can be used as the base material of the present invention is natural pulp such as softwood, hardwood, and mixed pulp of softwood and hardwood. Papermaking of these papers may be any of the conventionally known round net papermaking method and fourdrinier papermaking method, but the pulp to be used is mechanical pulp or chemical pulp, and chemical pulp is preferably used because of the stability of the photographic light-sensitive material. Even when mechanical pulp is used as needed, it is preferable that the usage ratio is suppressed to 30% or less as much as possible.

Further, the paper usable in the present invention can contain various polymer compounds in order to suppress generation of dust. For example, as the dry paper strengthening material, cationized starch, cationized polyacrylamide, anionized polyacrylamide, carboquine-modified polyvinyl alcohol (Kuraray KM-118, KL-11) is used.
8, KL-318, KL-506, etc.), gelatin and the like.

Examples of the sizing material include fatty acid salts, rosin derivatives, dialkyl ethyl dimer emulsions, petroleum resin emulsions, styrene-maleic anhydride copolymer alkyl esters, and ammonium salts of esters.

As the wet paper strengthening material, melamine resin,
Examples include urea resins and epoxidized polyamide resins.

As the fixing material, there are polyvalent metal salts such as aluminum sulfate and aluminum chloride, and cationic high-polymer such as cationized starch. As the pH adjusting material, there are caustic soda, sodium carbonate, hydrochloric acid and the like, and an inorganic electrolyte. As for the salt, salt, mirabilite, etc., and carbon can be contained in order to impart a light-shielding property.

Further, it is preferable that at least one surface of the base material is smoothed, and as the smoothing treatment, "Interesting of interesting paper" by Hidetoshi Komiya and Nikkan Kogyo Shimbun Co., Ltd. Calendar processing described in etc.,
Super calendar processing, cast coating processing,
Examples include Yankee dryer treatment and brush finish treatment. More preferably, it is calendered, and at least one side of the base material is calendered means that the base material itself is calendered in the manufacturing process of the base material, and the calendered paper is attached to the base material to form a package. May be formed. Further, for example, when the base material is cardboard, it is preferable to use calendered paper as a liner when producing the cardboard. The calendering can be carried out under the general conditions described in the latest papermaking technology "Theory and practice" by Hisaburo Ishiguro, Institute of Paper Science, Ltd. The surface smoothness of the material thus obtained is preferably 5 sec or more. Smoothness is JIS P
It is a value measured according to 8119. Using a base material in this range can prevent the generation of dust due to rubbing of the base material when opening and closing the package, etc. Moreover, since the base material is paper, it is lightweight and easy to handle, and it is inexpensive and disposable. An easy package can be provided.

It is also preferable to impregnate, coat or laminate a resin with a base material. As the resin to be used in this case, JP-B-51-49205 and JP-A-48-2202.
No. 0, No. 50-67644, No. 55-140835
No. 58-17434, No. 58-18744, No. 59-68238, No. 60-35728, low density, medium density, high density, linear low density polyethylene, polypropylene, etc. Polyolefin type, polybenzyl type such as ethylene vinyl acetate, acrylic type such as ethyl acrylate and ethylene methyl acrylase, rubber type such as styrene-butadiene, simple substance such as ionomer, blend, polymer polyamide type, polyethylene terephthalate, polymethylpentene, Examples of the resin include ethylene vinyl alcohol copolymer.

When the material is impregnated with resin, 0.5 to
Preferably 8 g / m ^2, more preferably 1 to 7 g / m ^2. If you coating is preferably is 1 to 10 g / m ^2, more preferably from 2 to 8 g / m ^2. When the above resin is impregnated or coated, it is used as a dispersion or solution of the above resin. For example, an aqueous polyethylene dispersion (solid content 40% by weight), an aqueous polypropylene dispersion (solid content 2
0% by weight), a 15% by weight solution of ethylene / vinyl acetate copolymer in toluene, an amorphous saturated polyester solution (manufactured by Toyobo Co., Ltd .; Byron # 500), an aqueous polyvinylidene chloride dispersion liquid (manufactured by Asahi Kasei Kogyo Co., Ltd .; Saran). Latex L-511), aqueous polyester dispersion (Eastman Chemical Co .; yeast WD size), vinyl chloride-
Examples thereof include vinyl acetate copolymer resin (manufactured by Denki Kagaku Kogyo Co., Ltd .; Denka Vinyl # 1000C). When laminating, the thickness is preferably 15 to 40 μ, and more preferably 20 to 30 μ. In the case of laminating, an anchor material may be used to enhance the adhesiveness, and examples of the anchor material include organic titanium-based, isocyanate-based, polyethyleneimine-based, polybutadiene-based and the like.

Examples of the method for processing the above resin include a reverse roll method, a blade method, an air knife method, a rod method, an extrusion method, a gravure roll method, a dry laminating method and a wet laminating method. It can be processed by the general method described on pages 129 to 370 of "Preparation of Paper Industry, Time Company".

It is desirable to use carbon black as a base material in order to impart a light-shielding property to the package as required. The carbon black that can be used is a furnace type, channel type, acetylene type, thermal type. It may be made by any manufacturing method such as. As an example of carbon black, MA manufactured by Mitsubishi Kasei Co., Ltd.
-600 # 650B, # 40, # 3150, # 325
0, # 3750, # 3950, MA-100, CABO
T-made carbon, VuLCAN, XC-72R, BL
AC, Pear1s700, VuLCAN.P, Ketjenblack EC manufactured by Lion Akzo Co., Ltd., Asahi HS-500 manufactured by Asahi Carbon Co., Ltd., and the like. The amount of these carbon blacks used is 3 to 8% by weight of the base material when directly added to the base material, 3 to 20% by weight of the resin composition when mixed in the resin, and a latex liquid. When mixed, it is preferably in the range of 10 to 40% by weight.

Hereinafter, more specific examples of the photographic light-sensitive material package of the present invention will be shown, but it goes without saying that the present invention is not limited to these examples.

Example 1 As a form of a photographic light-sensitive material package containing a glass substrate photographic light-sensitive material, a package consisting of a triple box as shown in FIG. 1 was prepared. FIG. 1 is a sectional view of a photographic light-sensitive material package. Inner box 1 inside outer box 11 of photographic light-sensitive material package 10
2, a packing 13 made of expanded polyethylene is placed in the inner box 12, and a glass substrate photographic photosensitive material 15 held by a pair of polypropylene spacers 14 is placed on the packing 13. Polyethylene foam packing 1 on glass substrate photographic light-sensitive material 15
6, the middle box 17 is inserted between the outer box 11 and the inner box 12 from above to cover it.

The outer box 11, the inner box 12 and the middle box 17 are
It is made of corrugated cardboard (wave number 6 / inch) as a base material. At least the end surfaces of the outer box 11, the inner box 12, and the middle box 17 are each provided with a calendered paper 18. Further, a resin film is laminated on at least the end surfaces of the outer box 11, the inner box 12 and the middle box 17,
Alternatively, when a resin is coated and impregnated, a film may be applied in the same manner, calendered paper may be adhered, or corrugated paper as a base material itself may be calendered.

The base material is

Package 1 that is a combination of inner, inner, and outer boxes shown in [Table 1]
~ 4 created.

[0022]

[Table 1] It should be noted that the mark ◯ indicates that the paper that has been subjected to the calendering treatment as the smoothing treatment is used. The part without circle indicates that the paper without calendar processing is used.

When making a sample, check the dust generation property of the paper stuck to the base material of each package.

It was prepared with the values shown in [Table 2].

[0024]

[Table 2] At this time, the smoothness of the attached paper was 70 sec. In addition, the dust generation is measured by measuring the amount of dust generated by rubbing the surface of the paper with a dust-free polyethylene sheet in a clean room designed to have a cleanness of class 100 or less with a dust counter of 20.5 mm. Measure the above dust (manufactured by HYAC Leuco).

KL-118 manufactured by Kuraray Co., Ltd. was used as a paper reinforcing material when the base material was made into paper.

Incidentally,

Each package in [Table 1] was prepared using No. 5 double-sided corrugated board (manufactured by Jujo Paper Co., Ltd.). The specific material used for the No. 5 double-sided corrugated board is liner material grammage 263 g / m ² flute material grammage 125 g / m ² .

As the calendered paper attached to the substrate, thin kraft paper having a basis weight of 75 g / m ² was used.

The calendering conditions are as follows: temperature 50 to 60 ° C. nip pressure 80 kg / cm ² nip number 3 speed 64 m / sec. Also, after removing foreign matter adhering to the package by air spray, cleanliness in a clean room of class 100. ,
After storing a high-resolution photographic light-sensitive material having a glass substrate as shown in Fig. 1, vibrating it for 5 hours in a vibration tester, opening it in the same clean room, taking out the photographic light-sensitive material, and spotting it at 30,000 lux. The result of visually counting foreign matter adhering to the surface of the photographic photosensitive material under light

It shows in [Table 3]. At this time, the cleanliness means the US Federal Standard 209 widely used for clean air systems.
It is a value measured based on the standard of b).

[0029]

[Table 3]The number of adhered foreign matters is 25/900 cm² Within is practical
There is no problem on the level, 50-55 pieces / 900 cm²
It depends on the usage, but it is at the limit level of 60
/ 900 cm² The above is the unusable level.

By sticking a dust-generating paper within the scope of the present invention to the inside of the box for storing the photographic light-sensitive material, dust generation can be suppressed and adhesion of foreign matter can be reduced to a level at which there is no practical problem. I see that it is possible.

Example 2 When making each package of Example 1, the base material of each package was used.

Papers having different smoothness as shown in [Table 4] were attached and prepared.

[0032]

[Table 4] Each package was made using No. 5 double-faced corrugated board made of the following materials.

Liner material Basis weight 263 g / m ² Flute material Basis weight 125 g / m ^{2 The} calendered paper attached to the substrate was a thin kraft paper basis weight of 75 g / m ² . In addition, as a paper strength reinforcing material when making paper, KL-118 manufactured by Kuraray Co., Ltd.
It was used.

Papers having different smoothness were prepared by changing the calendering conditions.

The results of visual inspection of foreign matter adhering to the surface of the photographic light-sensitive material by the same method as in Example 1 are shown.

It shows in [Table 5]. The evaluation is the same as in Example 1.

[0036]

[Table 5] Further, when a corrugated liner was used when making a corrugated board, the same result was obtained.

Similarly, the same results were obtained when using a paperboard having a basis weight of 1300 g / m ² and when using a calendered paperboard. Example 3 The following box was made by combining the above various base materials.

The photographic light-sensitive material was placed in the above box and the same test as in Example 1 was carried out to measure the number of adhered foreign matters and the following results were obtained.

All the comparisons were made with or without the calendered paper.

Example 4 The photographic light-sensitive material package shown in FIG. 1 was prepared in the following combinations.

The mark “◯” indicates that the product was laminated with polyethylene M-2004 20 μ manufactured by Asahi Kasei Kogyo Co., Ltd. The part without “◯” indicates that the product was not laminated.

The polyethylene used for lamination is a conductive carbon black manufactured by Mitsubishi Kasei Co., Ltd.
5% of furnace type black # 950 was added to the resin amount.

These samples were subjected to the same tests as in Example 1 and

As shown in Table 6, good results were obtained.

[0044]

[Table 6] Example 5 A photographic light-sensitive material package as shown in FIG. 2 was prepared as a cartridge for accommodating a strip-shaped photographic light-sensitive material. FIG. 2 is a sectional view of a photographic light-sensitive material package. A strip-shaped photographic photosensitive material 22 wound around a support member 21 is housed inside the cartridge of the photographic photosensitive material packaging body 20, and the photographic photosensitive material 22 is a guide 2 provided inside the cartridge.
It is guided at 3 and is taken out from the outlet 24. The cartridge of the photographic light-sensitive material package 20 was prepared by calendering the base material of the cartridge, with the surface having a smoothness of 50 sec facing inside.

When the above-mentioned cartridge is used and when a cartridge made of a base material which is not subjected to calendar treatment is used, prints are continuously taken under the same conditions, and dust on the prints after the treatment (white in actual prints) The results of visually observing the number of

It shows in [Table 7].

[0046]

[Table 7]

[0047]

As described above, in the package for photographic light-sensitive material using paper as a base material, at least one surface of the base material has no dust generation property.
To 60 pieces / ft ² , and the smoothness of at least one surface of the substrate is 5 sec or more, it is possible to prevent dust from being generated from the package itself, and it is lightweight and easy to handle, and It is inexpensive and easy to dispose of.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a photographic light-sensitive material package.

FIG. 2 is a sectional view of a photographic light-sensitive material package.

[Explanation of symbols]

 10 Photographic material packaging

Claims (6)

[Claims] 1. A package for storing a photographic light-sensitive material using paper as a base material, wherein at least one surface of the base material has a dust generation property of 0 to 60 pieces / ft ^3. Packaging for photographic light-sensitive materials. 2. A packaging body for containing a photographic light-sensitive material using paper as a base material, wherein at least one surface of the base material has a smoothness of 5 sec or more. 3. The photographic light-sensitive material package according to claim 1, wherein at least one surface of the base material is smoothed. 4. The photographic light-sensitive material package according to claim 1, wherein at least one surface of the base material is formed by laminating a resin film. 5. The photographic light-sensitive material package according to claim 1, wherein at least one surface of the base material is formed by coating a resin. 6. The method according to claim 1, wherein at least one surface of the base material is formed by impregnating a resin.
A package for a photographic light-sensitive material described in.