JP2006047856A - Packing bag for photographic roll film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packing bag for photographic roll film excellent in light blocking effect, moisture-proof property, fair appearance and openability. <P>SOLUTION: The packing bag is formed of a sheetlike laminated film 24. This laminated film 24 is formed by laminating an evaporated aluminum film 41 having an absorbance in a visible light region of ≥3.0 Abs on the outside of a sealant layer 40 formed of a resin material of an ethylene-based polymer, and by laminating a transparent evaporated glass film 44 printed 43 all over the rear face on the outside of the evaporated aluminum film 41 through an adhesive 42. The laminated film satisfies an absorbance in a visible light region of ≥3.5 Abs and a moisture permeability of ≤0.2 g/m<SP>2</SP>/24 h (40°C, 90% RH). The packing bag formed by a form fill sealing machine using the laminated film satisfies a moisture permeability of ≤0.4 g/m<SP>2</SP>/24 h (40°C, 90% RH). <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a photographic roll film packaging bag for hermetically packaging a photographic roll film.

  Conventionally, there are types of photographic roll film called 120 or 220 type brownie film, and the brownie film is a photographic film, a spool, a shading paper, a sealing seal, a joining tape for joining the photographic film and the shading paper, It consists of a resealable seal used after shooting. The photographic film is wound around the spool shaft from the rear end side with the rear end engaged with the spool. In the spool, flanges are formed at both ends of the spool shaft, and the pair of flanges cover both ends of the roll in the width direction of the photographic film. The light shielding paper is fixed at least to the front end of the photographic film, and is wound around the roll when the photographic film is wound around the spool, and shields the photographic film from the flange.

  Such a brownie film is sold in the form of a hermetically sealed packaging bag formed of a laminated film such as a polyceleronum film. The laminated film is obtained by laminating a metal layer such as an aluminum foil and a thermoplastic resin film layer such as a polyethylene film, and the metal layer contributes to securing light-shielding properties, moisture-proof properties, and moldability (Patent Document 1). ).

  However, the laminated film containing the aluminum foil has a problem that the aluminum foil remains without being burned even when incinerated. Then, the packaging bag which gave aluminum vapor deposition to the resin film in one layer of the some resin film which comprises a laminated | multilayer film is known (patent document 2).

In addition, a maker name, a product name, an identification number, and the like are marked on the surface of the package and characters. The package described in Patent Document 1 displays characters and marks by laser marking. In this laser marking, a thermoplastic resin film layer including a printed layer is evaporated by laser irradiation to expose a metal layer under the layer, and characters and marks are displayed outside.
JP-A-8-114893 JP 11-282131 A

  By the way, after the brownie film is wound in a roll shape, the light shielding paper is made to contain a proper amount of moisture so as to extend in the width direction so as to block between the flanges and shield the light. Also, if the light-shielding paper absorbs too much moisture and extends in the width direction, there is a possibility that it will not be able to load properly due to resistance between the flanges of the empty spool during film loading at the time of shooting. Therefore, it is necessary to maintain the moisture content and width of the light shielding paper within a certain range, and the packaging bag is required to have high moisture resistance.

  Conventionally, laminated films using aluminum foil have been used as a means of obtaining moisture resistance, but as mentioned above, aluminum foil is not suitable for incineration and is wrinkled due to its foldability, giving it an aesthetic appearance. There was a face to lose. In addition, in order to improve the suitability and aesthetics of the incineration process, the laminated film described in Patent Document 2 in which the aluminum foil is removed and aluminum deposition is applied to the single-layer resin film of the configuration, various processing facilities up to the packaging bag Due to the stress generated in, vapor deposition cracks occurred and the moisture resistance was not stable.

  In addition, in the laser marking described in Patent Document 1, characters and marks may not be clearly displayed, and particularly small characters may have poor identification. This is because in actual products, the thermoplastic film layer including black, dark blue, dark red, and other printed layers is evaporated by laser irradiation to expose the silvery color of the aluminum foil. The degree of evaporation varies due to variations in the output of irradiation, thickness variations in the laminated film, etc., resulting in gaps between the dots, making characters and marks not appearing as complete silver, reducing the brightness difference and strengthening the color boundary This is because you cannot feel it.

  The present invention has been made in view of the above-mentioned problems, and improves incineration suitability, aesthetics, and distinguishability of characters and marks to be displayed while maintaining moisture resistance and light shielding properties, which are basic performance requirements for photographic films. It is an object of the present invention to provide a photographic roll film packaging bag.

In order to solve the above problems, an aluminum vapor deposition film having an absorbance of 3.0 Abs or more in the visible light region is laminated on the outside of the sealant layer formed of an ethylene polymer resin material, and the adhesive is adhered to the outside of the aluminum vapor deposition film. to form the laminated film of the transparent glass deposition film subjected to printing on the entire back surface via the agent by laminating, the absorbance in the visible light region 3.5Abs. above, moisture permeability 0.2g / m ² / 24hr ( 40 ° C 90% RH) or less, and the moisture permeability of the bag after forming with a bag making and filling machine using the laminated film satisfies 0.4g / m ² / 24hr (40 ° C 90% RH) or less It is what you do.

  The laminated film has a foldability of 90 to 180 °, and a heat sealant is applied in advance to a part of the surface of the laminated film which is folded at the side of the flange when the photographic roll film is wrapped. It is desirable to work.

  Further, before packaging the photographic roll film, characters and marks are printed on a part of the outermost surface of the laminated film by an ink jet or thermal recording type printer. It is desirable that the color printed in the range is a color that has a lightness difference of 200 or more and a color difference of 500 or more with respect to the color of the printing that is the background of the range in the printing performed on the glass vapor-deposited film. .

In the photographic roll film packaging bag of the present invention, in order toward the outer side of the sealant layer formed of an ethylene polymer resin material, the absorbance in the visible light region is 3.0 Abs or more, and via an adhesive. By forming two layers with a transparent glass vapor-deposited film printed on the entire back surface, the absorbance in the visible light region is 3.5 Abs or more and the moisture permeability is 0.2 g / m ² / 24hr (40 ° C 90 ° % RH) or less, and the moisture permeability of the formed bag is 0.4g / m ² / 24hr (40 ° C 90% RH) or less even if vapor deposition cracking occurs due to stress from the bag making and filling machine. can do. As a result, it is possible to maintain moisture resistance and light shielding properties, which are basic performance requirements for photographic films.

  Moreover, instead of aluminum foil, an aluminum vapor-deposited film and a glass vapor-deposited film are used and the folding property is 90 to 180 °, so that the appearance is not wrinkled and the appearance is improved. When the folding property is lower than that of aluminum foil, the formability of the bag is deteriorated, but part coating agent is applied in advance to a part of the surface of the laminated film that is folded at the side of the flange when wrapping a photographic roll film. Formability can also be satisfied by applying the pattern.

  Further, the invention is such that the color printed on the outer surface of the laminated film is a color having a lightness difference of 200 or more and a color difference of 500 or more with respect to the printing color in the background of the printing range of the printing applied to the glass vapor-deposited film. The color printed on the outermost surface and the background printing color are sufficiently contrasted even when viewed in a person with weak color or in a black and white environment, improving the distinguishability of characters and marks printed on the outer surface of the laminated film. In addition, since printing is performed on a packaging bag without a wrinkle feeling, the distinctiveness is further improved.

  As shown in FIG. 1, the photographic roll film 10 includes a spool 14 in which a shaft portion 11 and flanges 12 and 13 at both ends are integrally formed, and a strip-shaped photographic film 15 wound around the shaft portion 11 of the spool 14. And a belt-like light-shielding paper 16 that is wound around the outer periphery of the photographic film 15 and shields light, and a belt-like sealing seal 17 that is wound around the outer periphery of the light-shielding paper 16 and has both ends bonded to the light-shielding paper 16. The sealing seal 17 includes a belt-like support 18 formed of, for example, a paper material, and thermal adhesive layers 19 and 20 provided on both sides of one surface of the support 18. On the outside of the thermal adhesive layer 20, an unbonded ear portion 21 is provided that is used when the sealing seal 17 is peeled off from the outer periphery of the light shielding paper 16.

  As shown in FIG. 2, the photographic roll film 10 is sealed with a three-dimensional packaging bag 25 that is folded up and down by a pillow-type bag making and filling machine using a laminated film 24. Is done. The bag making and filling machine conveys the laminated film 24 in a belt shape, seals both ends in the width direction in the vertical direction to form a center seal portion 26 into a cylindrical shape, and the center seal portion 26 becomes the back surface of the bag. The photographic roll film 10 is sealed with a pillow (pillow) -like bag by arranging the side seal portions 27 and 28 by sealing the left and right portions of the bag. The bag is shaped like a pillow with a gusset that is folded up and down where the flanges 12 and 13 of the spool 14 are located. When the photographic roll film 10 is packaged, a plate-like side seal portion is formed on both sides of the cylinder. 27 and 28 are overhanging. Part coat agents 29a and 29b are applied in advance to a part of the surface of the laminated film 24 so that the portions corresponding to the sides of the flanges 12 and 13 can be folded and bonded.

  As shown in FIGS. 3 and 4, the outer appearance of the packaging bag 25 includes three ranges 30 including a central portion and its upper and lower portions in the lateral direction on both the substantially cylindrical front and rear surfaces when the packaging bag is upright. Patterns are divided into ~ 32 and displayed. In these patterns, the printed layer of the laminated film 24 can be seen outside. The upper and lower areas 30, 32 are the same color, and the upper and lower areas 30, 32 are in the center. The range 31 is a pattern in which colors having different hues (hues) or colors of similar colors with different light and dark gradations are applied. The color (negative, reversal, black and white) of the photographic film 15 can be identified from the outside by the colors in the upper and lower ranges 30, 32. In addition, in the central area 31 in the front, characters and marks such as manufacturer name, film type (variety), size, sensitivity, product abbreviation, milk number (emulsion number), expiration date, etc. are printed by a printer such as inkjet or thermal transfer. 33 is printed. The color to be printed is a color having a lightness difference of 200 or more and a color difference of 500 or more with respect to the printing color in the central range 31.

  Further, in order to improve the openability, the side seal portions 27 and 28 are provided with a plurality of serrated opening 34 on the upper and lower sides, respectively. Furthermore, the four corners 35 to 38 above and below the side seal portions 27 and 28 are sharp, which is not preferable in terms of safety. Therefore, the four corners 35 to 38 are rounded.

  As shown in FIG. 5, the laminated film 24 includes a heat seal layer 40, an aluminum deposited PET layer 41, an adhesive layer 42, a printed layer 43, a glass deposited PET layer 44, and a part coat agent layer 29 in order from the bottom layer. It is configured. The heat seal layer 40 is a layer based on a thermoplastic resin having heat seal properties. Further, the aluminum vapor-deposited PET layer 41 is a layer obtained by depositing aluminum on one surface of a polyethylene terephthalate resin film to form an aluminum vapor-deposited film having an absorbance of 3.0 Abs or more. The packaging bag 25 has moisture resistance, light shielding properties, and strength. Give. The aluminum vapor deposition surface of the aluminum vapor deposition PET layer 41 is on the adhesive layer 42 side.

  Furthermore, the glass vapor-deposited PET layer 44 is a layer formed into a transparent glass vapor-deposited film in which glass vapor deposition is performed on one side of a polyethylene terephthalate resin film, and the packaging bag 25 has moisture resistance, printability, printability, strength, and Provides easy tearability. On the glass vapor deposition surface of the glass vapor deposition PET layer 44, a printing layer 43 in which printing ink containing a binder is solid-printed is applied. The printed layer 43 can be seen as a normal image from the surface side of the laminated film 24 through the transparent glass-deposited PET layer 44.

  The part coat agent layer 29 is a layer of the part coat agents 29a and 29b described in FIG. 2, and the heat-sealable part coat agents 29a and 29b are shown in FIG. As shown, it is a transparent layer in which a pattern coating is applied to the crease portion (a part of the surface of the laminated film 24 that is valley-folded on the sides of the flanges 12 and 13) in the belt-like direction of the laminated film 24. Yes. A transparent part coat agent 29 c is also applied to the inner side of the center seal portion 26 by pattern coating in which the laminated film 24 is applied in the belt-like direction.

  As the heat seal layer 40, it is desirable to use an ethylene-based polymer resin material, but the heat seal layer 40 is not limited to this, and is usually a polyolefin such as polypropylene, polyester, polyamide, or a copolymer of these polymers. A thermoplastic resin used as a packaging material can be used. In this embodiment, the heat seal layer 40 is used as the sealant layer, but instead of this, a press seal layer to which a polymer is pressure-bonded may be used.

  In addition, the resin film for aluminum vapor deposition and glass vapor deposition is not limited to polyethylene terephthalate, but other polyester film, polyamide film, polyolefin film, polystyrene film, etc., which is usually used as a packaging material, can be used. Those that are uniaxially or biaxially stretched are preferred.

  Glass vapor deposition is made of oxides, nitrides, fluorides such as silicon, aluminum, titanium, zirconium, and tin, or a composite thereof, and includes vacuum deposition, sputtering, plasma vapor deposition (CVD). Glass vapor deposition, which is usually formed as a packaging material, can be used.

  The part coat agent applied to the film used in the present invention is not particularly limited, and is generally used conventionally such as ethylene-unsaturated carboxylic acid copolymer, chlorinated polyolefin, or heat seal varnish. The part coat agent currently used can be used.

  The adhesive layer 42 used in the present invention is preferably a dry lamination urethane adhesive, an extrusion lamination ethylene polymer, or another polyolefin resin, and preferably has a thickness of 3 to 15 μm.

  The folding property of the present invention is determined by cutting the laminated film 24 into 5 cm × 5 cm, folding it into four, applying a load of 3.2 kPa for 1 minute, removing the load, and measuring the folding angle after 10 seconds with a protractor (0 to 180 °) foldability. The smaller the numerical value, the better the folding, and the larger the value, the less folding.

As described above, the laminated film 24 is formed by laminating the aluminum vapor deposition film 41 having an absorbance of 3.0 Abs or more in the visible light region through the adhesive layer 42 inside the glass vapor deposition film 44 having a solid print on the back surface. An ethylene polymer sealant layer 40 is provided on the inner side of the film 41. As a result, the strip-like laminated film 24 has an absorbance in the visible light region of 3.5 Abs or more and a moisture permeability of 0.2 g / m ² / 24hr the manner to satisfy (40 ℃ 90% RH) or less, the moisture permeability of the packaging bag is ^{0.4g / m 2 / 24hr (40} ℃ 90% RH after forming in bag making filling machine by using the laminated film 24 ) I was able to satisfy the following.

The moisture permeability was measured by the actual packaging method. In this measuring method, a three-sided flat bag is produced by heat sealing with the laminated film 24, and an appropriate amount of calcium chloride is added as a moisture absorbent in the bag, and then the sample sealed on the fourth side by heat sealing is set to a temperature of 40 ± 1. It is placed in a constant temperature and humidity chamber where air at 90 ° C. and a relative humidity of 90% circulates at a speed of 1 m / second for a certain period of time (24 hours), and the weight of moisture permeating through the laminated film 24 of the sample is measured. The measured value was divided by the surface area of the bag and further converted to per m ² to obtain moisture permeability. This equation is shown in [Formula 1]. The value of moisture permeability shown in the present embodiment is a value obtained by repeating the above-described measurement for about 3 to 7 days and taking an average value when stable.

[Equation 1]
Moisture permeability (g / m ² / 24hr) = (weight of specimen after 24hr−initial specimen weight) / surface area of bag (moisture permeability area) (cm ² ) × 10,000

  The laminated film 24 configured as described above is supplied to the packaging device as shown in FIG. The packaging apparatus is roughly divided into a laminated film supply process 47, a printing process 48, a photographic roll film supply process 49, a primary sealing process 50, a secondary sealing process 51, a cooling process 52, a cutting process 53, and a stacking process 54. .

  In the laminated film supply step 47, the laminated film 24 wound in a roll shape is supplied in one direction in a strip shape. In the printing process 48, the laminated film 24 is fed at a fixed length, and characters and marks 33 are recorded by an ink jet or thermal recording type printer for each range in which the photographic roll film 10 on the surface is individually mounted. In the photographic roll film supplying step 49, both ends of the laminated film 24 in the width direction (direction perpendicular to the conveying direction) after the printing and recording are overlapped on the bottom surface, and a center seal is continuously applied to form the laminated film 24 in a cylindrical shape. At the same time, the photographic roll film 10 is supplied into the cylindrical shape of the laminated film 24 for each surface printing range. The photographic roll film 10 is supplied in a direction in which the shaft portion 11 of the spool 14 is orthogonal to the conveying direction of the laminated film 24.

  In the primary sealing step 50, movable heater heads arranged above and below the conveyance path of the laminated film 24 are arranged orthogonal to the conveyance direction. In this step, the photographic roll film 10 of the laminated film 24 is disposed. A temporary seal is applied in the width direction for each packaging range to be packaged. In the secondary sealing process, a head unit is arranged in which two sets of movable heater heads arranged above and below the conveyance path are separated from the packaging range and arranged side by side. I will do it. In the cooling step, the part that is finally sealed by the cooling head is cooled. In the cutting step, each packaging range is cut with an up and down rotary type movable blade and separated into individual packaging bags 25. Then, the individual packaging bags 25 are conveyed and accumulated in the accumulation process.

  Here, the movable blade used in the cutting step 53 is partially formed with a serrated blade shape for making the opening 34 in the side seal portions 27 and 28, and 4 of the side seal portions 27 and 28. Curved portions for making roundness are formed at positions corresponding to the two corner portions 35 to 38. Furthermore, if the side seal portions 27 and 28 are made with a heater head having a certain width for both the temporary and final seals, there is a risk that the ear portion 21 of the sealing seal 17 in the photographic roll film 10 may be bitten. . Therefore, the heater head has a shape in which the substantially central portions 27a and 28a corresponding to the range in which the ear portion 21 is engaged is recessed, and the side seal portions 27 and 28 are formed in a substantially central portion 27a, so that the ear portion 21 is not engaged. The seal width is reduced by the range of 28a.

  The heat seal layer 40 is formed of EMAA resin having a thickness of 15 μm by an extrusion lamination method. The aluminum vapor-deposited PET layer 41 is formed by applying a vapor deposition thickness of 800 mm to PET having a thickness of 12 μm to give a visible light absorbance of 3.4 Abs. The adhesive layer 42 is formed of an EMAA resin having a thickness of 7 μm by an extrusion lamination method. The glass vapor-deposited PET layer 44 was formed by vapor-depositing aluminum oxide on PET having a thickness of 12 μm, and a 2 μm print layer was formed on the vapor-deposited surface by oil-based gravure printing. Then, the part coat agent layer 29 is applied so as to have a thickness of 2 μm, whereby the total thickness of the laminated film 24 becomes approximately 50 μm.

  As shown in FIG. 4, the packaging bag 25 has a finished width dimension A of 44 mm, a height B of 70 mm, a width C of the side seal portions 27 and 28 of 3 to 5 mm, and a diameter of the upper and lower cylindrical portions of 26 mm. It is said. Further, as shown in FIG. 3, the width D of the center seal portion 26 is 10 mm, the distance E from the center seal portion 26 to the opening 34 is 13 mm, the length F of the plurality of serrated teeth provided in the opening 34 is 9 mm, The length G of each serrated tooth is 3 mm, and the depth H of the serrated tooth is 1.2 mm. All the tolerances of the above dimensions are ± 2 mm.

  As shown in FIG. 8 in which the front is developed, the printing layer 43 changes color at the boundary between the upper and lower ranges 30 and 32 and the central range 31. The upper and lower areas 30 and 32 are in the finished packaging bag 25 up to a position where the length J from the upper and lower ends is 15 mm, and of course includes the upper and lower circular portions. Among these, on the front of the upper range 30, the film type name is superimposed and displayed on a single color background with a color having a different hue (hue) from the color or a similar color and a different shade of gradation. It is printed so that the manufacturer name is displayed on the back side as well. Here, the background colors of the upper and lower ranges 30 and 32 are determined according to the type of the photographic film 15, for example, type A is black, type B is orange, and type C is dark blue. . In addition, not only these colors but any color may be used as long as it is a color different from the central range 31.

  Further, as shown in detail in FIG. 3, an identification number 46 recorded in the printing step 48 is printed in the lower range 32 on the back side. Since this number is an identification number of the packaging bag 25, there is no problem even if the identification is low. The central range 31 is displayed in a single color different from the printing colors of the upper and lower ranges 30 and 32, for example, white. The central range 31 is displayed in the printing step 48. A print area 55 for printing is set. The print area 55 is a square area with a side length K of 30 ± 3 mm.

  In the print area 55, a character string is printed in four columns in the vertical direction in a single color, for example, black, having a brightness difference of 200 or more and a color difference of 500 or more with respect to the background color of the area 55.

  Lightness and color difference values can be found in W3C's Techniques For Accessibility Evaluation And Repair Tools (searched July 28, 2004) Internet <URL: http://www.i-create.jp/accessibility/color-checker-howto This is a value calculated using the brightness difference calculation formula and the color difference calculation formula proposed by .shtml # howto>. Specifically, the RGB values of the foreground and background colors are expressed as decimal numbers from 0 to 255 (respectively R, G, B), and the brightness is calculated using the formula ((R x 299) + (G x 587 ) + (B x 114)) / 1000. The difference in brightness between the foreground print color and the background print color is based on 200 or more. The formula for calculating the brightness is obtained by converting RGB into a Y (brightness) value in the YIQ color system used for transmitting color television signals.

  Calculate the difference in color (max (Rb, Rf)-min (Rb, Rf)) + (max (Gb, Gf)-min (Gb, Gf)) + (max (Bb, Bf)-min (Bb, Bf)) (Rb is the background color R, Gf is the foreground color G, etc.). The color difference is based on 500 or more.

  As shown in FIG. 9, in the uppermost character string 56 to be printed in the print area 55, a maximum of 11 alphanumeric characters with dimensions of 5 mm in height and 2.5 mm in width are arranged to print the type of the photographic film 15. is doing. Next, in the character string 57 in the second row from the top, several characters having dimensions of 6 to 8 mm in height × 5 mm in width are arranged at the maximum, and the size of the photographic film 15, for example, “120” or “220” is set. Printed. In addition, the character string 58 representing the sensitivity of the photographic film 15 following the size character string 52 is printed with a maximum of six characters arranged in a size of one character height 4 mm × width 1.5 mm.

  In the third character string 59 from the top, a maximum of 11 alphanumeric characters with dimensions of 5 mm in height and 2.5 mm in width are arranged and the abbreviation (model number) of the photographic film 15 is printed. In the lowermost character string 60, a maximum of 15 alphanumeric characters having a size of 2.5 mm in height × 1.5 mm in width are arranged and the emulsion number and the expiration date of the photographic film 15 are printed. As the display, it is particularly necessary to increase the size discrimination. Therefore, as described above, the alphanumeric characters representing the size are described in a size of 10 points or more as defined in Japanese Industrial Standard (JIS) Z8305.

  In the above embodiment, the packaging bag 25 for wrapping the photographic roll film is described. However, the present invention is not limited to this, but the photographic film cartridge, the X-ray film, the instant film, the photographic paper, the photosensitive paper, and the photographic film. It can also be used for a packaging bag for packaging a film unit with a lens containing a cartridge.

It is a perspective view which shows the roll film for photography accommodated in the packaging bag of this invention. It is the perspective view seen from the back side which shows a packaging bag, and in order to describe the roll film for photography which was equipped with the dotted line, the pattern of the external appearance is abbreviate | omitted. It is the perspective view seen from the back side which shows a packaging bag, and has shown that the range which gave the light black ink differs from the plain range and the gradation of light and dark. It is the perspective view seen from the front side which shows a packaging bag, and has shown that the range which gave the light black ink differs from the plain range and the gradation of light and dark. It is sectional drawing which shows the layer structure of the laminated | multilayer film utilized for a packaging bag. It is explanatory drawing which shows the surface of the laminated | multilayer film conveyed in strip | belt shape. It is process drawing which shows the procedure which decorates the roll film for photography inside a packaging bag. It is explanatory drawing which expanded and showed the front of the packaging bag. It is explanatory drawing which expanded and showed the area printed on the front of a packaging bag.

Explanation of symbols

10 Photo roll film 24 Laminated film 25 Packaging bag 26 Center seal part 27, 28 Side seal part 29 Part coat agent layer 40 Heat seal layer 41 Aluminum vapor deposition PET layer 42 Adhesive layer 43 Print layer 44 Glass vapor deposition PET layer

Claims (3)

A photographic roll film comprising at least a strip-shaped photographic film provided with a light-shielding paper at the tip end and a spool having a flange at both ends and winding the photographic film in a roll shape between the ends is hermetically packaged in a roll form. In addition, in a photographic roll film packaging bag formed from a sheet-like laminated film constituted by laminating a plurality of resin films,
An aluminum vapor deposition film with an absorbance of 3.0 Abs or more in the visible light region is laminated on the outside of the sealant layer formed of an ethylene polymer resin material, and printing is performed on the entire back surface via an adhesive on the outside of the aluminum vapor deposition film. The laminated glass film is laminated to form the laminated film, and the absorbance in the visible light region is 3.5 Abs or more and the moisture permeability is 0.2 g / m ² / 24hr (40 ° C 90% RH) or less. to the manner, for photographic roll film of moisture permeability of the bag after formation in the bag making filling machine using the laminated film is characterized in that at ^{0.4g / m 2 / 24hr (40} ℃ 90% RH) or less Packaging bag.   The layer film has a foldability of 90 to 180 °, and when the photographic roll film is wrapped, a part coat agent is applied in advance to a portion of the surface of the laminated film which is folded at the side of the flange. 2. The packaging bag for photographic roll film according to claim 1, wherein the packaging bag is a photographic roll film. Before packaging the photographic roll film, characters and marks are printed on a part of the outermost surface of the laminated film by an ink jet or thermal recording type printer, and the color to be printed on the range is the glass vapor deposition. 3. The photographic roll film according to claim 1 or 2, wherein the color difference is 200 or more and the color difference is 500 or more with respect to the printing color corresponding to the background in the range of the printing applied to the film. Packaging bags.

Images