JP4541948B2 - Shading cover for infusion containers - Google Patents

Description

  The present invention relates to a light shielding cover for an infusion container that is used by being placed on an infusion container, and prevents deterioration of the infusion due to light such as ultraviolet rays.

Infusion solutions containing vitamins, amino acids and the like are easily altered by light, and are required to shield not only ultraviolet rays but also part of visible rays. In this regard, the infusion container itself is made of a transparent plastic bottle or film bag so that the liquid level can be seen, so it is packed in a light-shielding packaging material such as cardboard for distribution storage, Because of the incident light, alterations such as vitamins become a problem.
Therefore, when administering an infusion, a light-shielding cover is put on the infusion container so as to cover the periphery.
As such a light shielding cover for an infusion container, for example, one disclosed in JP-A-2003-275280 is known. The light-shielding cover of this publication is formed of a light-shielding film provided with a brown light-shielding colored ink layer on a polyethylene terephthalate film base material provided with an ultraviolet-absorbing / light-shielding ink layer, except for a visual window. The portion other than the window portion is a film having a light transmittance of a wavelength of 400 nm or less of 5% or less and a light transmittance of a wavelength of 400 to 800 nm of 50% or less, and the window portion has a wavelength of 400 nm or less. The light transmittance is 5% or less and the light transmittance at a wavelength of 600 nm or more is 50% or more. A conventional light-shielding cover provided with such a window portion allows the amount of infusion to be visually recognized through the window portion.

  However, the film used for the light-shielding cover has a relatively small window portion, so it is difficult to confirm the amount of infusion, and the window portion transmits a part of visible light (up to about 500 nm wavelength). Since the rate is relatively high (bad), there is a possibility that the infusion solution may be deteriorated by light entering from the window. In this regard, when the window portion is wide, the visibility is improved, but the light shielding property is lowered. On the other hand, when the window portion is narrowed, the light shielding property is improved, but the visibility is further deteriorated.

JP 2003-275280 A

  Accordingly, an object of the present invention is to provide a light shielding cover for an infusion container that is excellent in light shielding not only in ultraviolet rays but also in a part of visible light and can visually recognize the infusion without providing a window portion. .

As a means for solving the above-mentioned problems, the present invention provides a base film comprising at least two ink layers printed with the first ink and the second ink, respectively, or a mixed ink obtained by mixing the first ink and the second ink. The first ink is applied to the base film together with the ultraviolet absorption blocking treatment, and includes a light-shielding film provided with a colored ink layer having a printed mixed ink layer and an ultraviolet absorption blocking treatment that absorbs or blocks ultraviolet rays. In this state, the light transmittance in the ultraviolet region with a wavelength of 380 nm or less is 1% or less, the light transmittance with a wavelength of 420 to 530 nm is 5% or less, and the light transmittance in a visible light region with a wavelength of 600 nm or more. The second ink is laminated on the ink layer of the first ink applied together with the ultraviolet ray absorption blocking treatment. By printing on a film or mixing with a first ink and printing on a base film, the light transmittance at a wavelength of 380 to 420 nm is further reduced to 5% or less and the light transmittance at a visible light region of a wavelength of 600 nm or more. Provided is a light-shielding cover for an infusion container made of an ink having a ratio of 70% or more .

In the light shielding cover, the ultraviolet light absorption blocking treatment and the colored ink layer interact to reduce the light transmittance of visible light having a wavelength of 530 nm or less in the ultraviolet light and visible light region to 5% or less, A light transmittance of visible light having a wavelength of 600 nm or more can be secured by 70% or more. Therefore, it is possible to provide a light-shielding cover with excellent visibility in which the amount of infusion can be easily seen through the entire cover while preventing quality deterioration of the infusion.

Furthermore, as the first ink, when applied to a transparent polyethylene terephthalate film having a light transmittance of 80% or more at a wavelength of 350 to 800 nm by gravure printing with a dry thickness of 0.3 to 1.5 μm, The printed film has a light transmittance of 5% or less at a wavelength of 420 to 530 nm, a light transmittance of 70% or more at a wavelength of 600 nm to 800 nm, and a light transmittance of 5% or more at a wavelength of 350 to 420 nm. It is preferable to use an ink showing the portion.
As the second ink, when applied by gravure printing with a dry thickness of 0.3 to 1.5 μm on a transparent polyethylene terephthalate film having a light transmittance of 80% or more at a wavelength of 350 to 800 nm, This printed film has a light transmittance of 30% or less at a wavelength of 380 to 420 nm, a light transmittance of 10% or less at a wavelength of 420 to 450 nm, a light transmittance of 70% or more at a wavelength of 600 to 800 nm, a wavelength. It is preferable to use an ink having a peak portion where the light transmittance is 20% or more in 300 to 400 nm.
Here, the light transmittance means a value measured in accordance with JIS K 7105.

  The light shielding cover for an infusion container of the present invention can reliably shield a part of light rays in the ultraviolet and visible light regions, and has a light transmittance of 70% or more for visible light having a wavelength of 600 nm or more. The infusion solution can be visually recognized from the entire surface. Therefore, the cover for an infusion container according to the present invention does not need to form a window part for visual recognition like a conventional light-shielding cover, can prevent deterioration of the infusion during use, and visually inspect the infusion volume from the outside. be able to.

Hereinafter, the present invention will be specifically described with reference to the drawings.
In FIG. 1, reference numeral 10 denotes a light shielding cover for an infusion container that is formed into a bag shape so that it can be fitted onto the infusion container.
Specifically, the light shielding cover 10 includes two film pieces 1a and 1a, each having a light shielding film 1 formed in an appropriate rectangular shape, with the sealant layers facing each other and heat-sealing both side edges. The upper end edges of the two film pieces 1a and 1a are heat-sealed except for the upper opening secured at the center of the upper edge. The light-shielding cover 10 is used by covering the infusion container from the lower opening, and peeping the suspended portion of the infusion container from the upper opening.

As shown in FIG. 2, the light-shielding film 1 constituting the light-shielding cover 10 includes an ultraviolet absorption blocking layer 3 provided as an ultraviolet absorption blocking process on the inner surface of the base film 2, and a colored ink layer 5 provided on the inner surface. And a sealant layer 6 provided on the inner surface.
As the base film 2, for example, one or two selected from polyesters such as polyethylene terephthalate, polyolefins such as polypropylene, polystyrenes such as polystyrene, cyclic olefins, polyvinyl chloride, polyamide, polycarbonate, and the like. Polyethylene terephthalate, etc. can be used as a transparent film composed of the above-mentioned mixture and the like, and laminated films thereof, and are versatile, heat resistant, excellent in strength, and excellent in transparency. It is preferable to use a polyester film. As the base film 2, a film that has been subjected to ultraviolet absorption blocking treatment, such as a film formed of a resin composition kneaded with an ultraviolet absorption or blocking agent, or a film infiltrated with an ultraviolet absorption or blocking agent is used. You can also. As the base film 2, a film having excellent transparency with a wavelength of 600 to 800 nm and a light transmittance of 80% or more is used. The thickness of the base film 2 is about 10 to 70 μm.

  As the UV absorption blocking layer 3, organic UV absorbers such as benzotriazole compounds, benzophenone compounds, cyanoacrylate compounds, salicylate compounds, inorganic UV blocking agents such as titanium oxide, zinc oxide, cerium oxide, etc. Can be used. The ultraviolet absorption blocking layer 3 is laminated on the entire inner surface of the base film 2 by dispersing and dissolving such an ultraviolet absorber or blocking agent in a suitable binder and applying it by a printing method such as a gravure coating method.

Next, the colored ink layer 5 includes two ink layers 51 and 52 each printed with the first ink and the second ink.
When the first ink layer 51 is provided on the base film 2 together with the ultraviolet absorption blocking layer 3, the light transmittance of the film in the ultraviolet region with a wavelength of 380 nm or less is 1% or less and the light with a wavelength of 420 to 530 nm is transmitted. It is made of an ink that can have a light transmittance of 70% or more in a visible light region having a rate of 5% or less and a wavelength of 600 nm or more.
The first ink is not particularly limited, and examples thereof include vermilion ink exhibiting vermilion and ink satisfying the following condition 1.
Condition 1: An ink is gravure-printed with a dry thickness of about 0.3 to 1.5 μm on a transparent polyethylene terephthalate film having a light transmittance of 80% or more at a wavelength of 350 to 800 nm, and this printed film is JIS K 7105. The light transmittance is measured according to the standard.
a) Light transmittance at a wavelength of 420 to 530 nm is 5% or less,
b) The light transmittance at a wavelength of 600 to 800 nm is 70% or more,
c) There is a portion where the light transmittance is 5% or more in a wavelength of 350 to 420 nm.
Ink showing optical properties, more specifically,
In addition to the above a) to c)
d) An ink having a peak portion where the light transmittance is 10% or more at a wavelength of 300 to 400 nm.

Further, the second ink layer 52 is further laminated (or mixed with the first ink) on the film exhibiting the light transmittance by the synergistic effect of the ultraviolet absorption blocking layer 3 and the first ink layer 51, whereby the ultraviolet absorption. The light transmittance at a wavelength of 380 to 420 nm that could not be suppressed by the blocking layer 3 and the first ink layer 51 can be suppressed to 5% or less, and the light transmittance at a visible light region of a wavelength of 600 or more. Is made of an ink that can secure 70% or more.
It does not specifically limit as 2nd ink, For example, the yellow ink which exhibits yellow, the ink which satisfy | fills the following conditions 2, etc. are illustrated.
Condition 2: On a transparent polyethylene terephthalate film having a light transmittance of 80% or more at a wavelength of 350 to 800 nm, ink is gravure-printed at a dry thickness of about 0.3 to 1.5 μm, and this printed film is JIS K 7105 The light transmittance is measured according to the standard.
e) Light transmittance at a wavelength of 380 to 420 nm is 30% or less,
f) The light transmittance at a wavelength of 600 to 800 nm is 70% or more,
g) Light transmittance at a wavelength of 420 to 450 nm is 10% or less,
h) Ink showing a peak portion having a light transmittance of 20% or more at a wavelength of 300 to 400 nm.

The first ink layer 51 of the colored ink layer 5 is synergistic with the ultraviolet absorption blocking layer 3 and has a light transmittance of 1% or less and a wavelength of 420 to 530 nm of light having a wavelength of 380 nm or less among the light transmitted through the base film 2. The light transmittance is 5% or less and the light transmittance in a visible light region having a wavelength of 600 nm or more is 70% or more.
On the other hand, the second ink layer 52 in the colored ink layer 5 is suppressed to 5% or less of the light transmittance at a wavelength of 380 to 420 nm, which cannot be suppressed only by the first ink layer 51 and the ultraviolet absorption blocking layer 3. The light transmittance of 70% or more ensured by the first ink layer 51 can be maintained without suppressing light having a wavelength of 600 nm or more.
In particular, when the second ink layer 52 is a yellow ink, the light transmittance at a wavelength of 600 to 800 nm is excellent, while the light absorption at a wavelength of 380 to 420 nm is excellent.
With such a colored ink layer 5, the light-shielding film 1 of the present invention can block visible light and ultraviolet rays having a wavelength of 530 nm or less at a light transmittance of 5% or less, particularly 510 nm or less to 3% or less, and more preferably 1% or less, On the other hand, visible light having a wavelength of 600 nm or more can be secured at a light transmittance of 70% or more.

The colored ink layer 5 may be printed by a conventional printing method such as gravure printing, flexographic printing, or screen printing, and is formed on the entire inner surface of the film 2. Further, the thickness of the colored ink layer 5 is appropriately designed in consideration of light shielding properties and visibility. If the thickness is too thin, the light shielding properties are inferior. Conversely, if the thickness is too thick, the visibility decreases. About 0.5-5 micrometers is preferable. Specifically, the first ink layer 51 has, for example, a dry thickness of about 0.3 to 2.0 μm, preferably a dry thickness of about 0.3 to 1.5 μm, more preferably a dry thickness of 0.3 to 1.0 μm. To be applied. The second ink layer 52 is applied to a dry thickness of about 0.3 to 3.0 μm, preferably about 0.3 to 1.5 μm, more preferably about 0.3 to 1.0 μm. Is done.
In addition, when forming each ink layer, the thickness of the ink layer is adjusted by mixing the ink to be applied with a transparent ink that does not contain a colorant component such as a transparent medium ink, if necessary. Can do.

Next, the sealant layer 6 is not particularly limited as long as it can be thermally welded. For example, polyethylene such as linear low density polyethylene, high density polyethylene, and metallocene catalyst polyethylene, polypropylene, ethylene-vinyl acetate copolymer. Etc. can be used. The sealant layer 6 can be laminated, for example, on the innermost surface side of the base film 2 by a known laminating method such as an extrusion laminating method or a dry laminating method using a transparent adhesive. Among these, it is preferable to laminate by the dry laminating method from the viewpoint that the unevenness of the surface of the sealant layer 6 is small and a more transparent laminated film can be obtained. In this case, a highly transparent adhesive is used.
The light shielding film 1 provided with the sealant layer 6 is preferable because it can be easily formed into a bag shape by heat sealing or the like, but the light shielding film 1 without the sealant layer 6 can also be used.

  The light shielding cover 10 is used by covering the infusion container. Since this light-shielding cover 10 is made of the light-shielding film 1 having a light transmittance of 5% or less (especially 3 to 1% or less when the wavelength is 510 nm or less) at a wavelength of 530 nm or less, it is excellent in preventing deterioration of infusion quality. On the other hand, the light-shielding cover 10 is made of the light-shielding film 2 having a light transmittance of 70% or more for visible light having a wavelength of 600 nm or more, so that the liquid level of the infusion container encapsulated through the entire surface of the cover 10 can be easily seen. The situation can be easily grasped.

In addition, the layer structure of the light shielding film 1 of this invention is not restricted to what was illustrated above, It can change into a various aspect.
For example, in each of the above embodiments, the ultraviolet absorption blocking layer 3 is provided on the base film 2. For example, the base film 2 is subjected to ultraviolet absorption blocking treatment such as kneading ultraviolet absorption or blocking agent. When UV is used, the ultraviolet absorption blocking layer 3 can be omitted. In addition, an ultraviolet absorbing or blocking agent can be mixed with the ink constituting the colored ink layer, and the ultraviolet absorbing blocking layer 3 can be omitted in this case as well.
Moreover, in the said embodiment, although the two ink layers 51 and 52 which comprise the colored ink layer 5 are directly overcoated, for example, the two ink layers 51 and 52 are interposed by interposing the base film 2. It may be laminated. The colored ink layer 5 is not limited to a two-layer laminated structure of different inks, and may be three or more layers.
Further, in each of the above embodiments, the colored ink layer 5 is composed of two or more ink layers in which the first ink and the second ink are separately applied, for example, a mixed ink in which the first ink and the second ink are mixed. It may be comprised from the mixed ink layer formed in (4). The mixed ink layer may be a single layer, or two or more layers may be laminated. Further, the mixed ink layer may be colored by laminating the first ink layer and / or the second ink layer and the mixed ink layer. The ink layer 5 can also be configured.

If the combination of these various modifications is shown (however, the ultraviolet absorption blocking layer and the sealant layer are omitted), the first ink layer / base film / second ink layer, second ink layer / base film / First ink layer, base film / first ink layer / second ink layer / second ink layer, base film / first ink layer / second ink layer / first ink layer / second ink layer, base film / mixing Examples include ink layer, base film / mixed ink layer / mixed ink layer, mixed ink layer / base film / first ink layer, / base film / mixed ink layer / first ink layer / second ink layer, and the like.
In addition, when the base film 2 consists of a multilayer film, you may interpose the coloring ink layer 5 and the ultraviolet absorption blockage layer 3 in the middle suitably.
Moreover, if it is a range which does not impair the effect of this invention, it is also possible to laminate | stack a functional layer other than the layer illustrated above, and another colored ink layer.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. However, the present invention is not limited to the following examples.
(Printing ink used)
Yellow ink (1): Dainichi Seika Kogyo Co., Ltd., trade name: HR color 722 yellow LX.
Yellow ink (2): manufactured by Dainichi Seika Kogyo Co., Ltd., trade name: NT Hiramic 722R yellow M3.
Vermilion ink: manufactured by Dainichi Seika Kogyo Co., Ltd., trade name: HR color 950 vermilion LX.
Yellow ink containing ultraviolet absorber (hereinafter referred to as “ultraviolet absorbing yellow ink”) manufactured by Toyo Ink Mfg. Co., Ltd., trade name: Multiset V Conch Yellow.
Each ink was printed by a gravure printing method using a 150-line gravure roll except for the ultraviolet absorbing yellow ink of Example 6.

Example 1
A yellow ink (1) is printed on the outer surface of a 25 μm thick polyethylene terephthalate film (trade name: HBP, manufactured by Teijin DuPont Films Co., Ltd.) formed by mixing a UV absorber with gravure printing. A layer (dry thickness about 1.0 μm) was formed. Further, the same yellow ink (1) was applied again from above. On the other hand, on the inner surface of the film, gravure printing is applied to the thin vermilion ink in which an equal amount of transparent ink (trade name: HR color R medium, manufactured by Dainichi Seika Kogyo Co., Ltd.) is added to the vermilion ink and the colorant concentration is halved. A solid ink layer (dry thickness: about 1.0 μm) was formed by solid printing. A linear low-density polyethylene film (product name: L130AS, manufactured by Aicello Chemical Co., Ltd.) having a thickness of 40 μm as a sealant layer is applied to the inner surface of the printed film, and a two-component curable urethane adhesive (Mitsui Takeda Chemical Co., Ltd.). Manufactured, trade name: Takerak). About the obtained film, the light transmittance in wavelength 200-800 nm was measured. The result is shown in FIG.
The light transmittance is measured using an integrating sphere type light transmittance measuring device (manufactured by Shimadzu Corporation, trade name: UV-2450) in accordance with JIS K 7105. (Product name: ISR-2200, manufactured by Shimadzu Corporation) is attached.) Hereinafter, the light transmittance of each film was measured with the same measuring apparatus.

(Example 2)
The yellow ink (2) is solid-printed on the inner surface of the same film as in Example 1 to form a yellow ink layer (dry thickness of about 1.0 μm), and the yellow ink (2) is similarly overcoated from above. did. Further, the same amount of a thin vermilion ink layer, the concentration of which was adjusted in the same manner as in Example 1, was applied from above. A sealant layer was laminated on this printed film in the same manner as in Example 1, and the light transmittance of the obtained film was measured in the same manner. The result is shown in FIG.
(Example 3)
On the inner surface of the same film as in Example 1, UV-absorbing yellow ink was solid-printed to form a UV yellow ink layer (dry thickness of about 1.0 μm), and the same UV-absorbing yellow ink was overcoated in the same manner. . Further, the same amount of a thin vermilion ink layer, the concentration of which was adjusted in the same manner as in Example 1, was applied from above. A sealant layer was laminated on this printed film in the same manner as in Example 1, and the light transmittance of the obtained film was measured in the same manner. The result is shown in FIG.
Example 4
A film was produced in the same manner as in Example 3 except that the ultraviolet absorbing yellow ink of Example 3 was changed to printing once. The light transmittance was similarly measured about the obtained film. The result is shown in FIG.

(Example 5)
On the inner surface of a 12 μm thick polyethylene terephthalate film, a UV-absorbing yellow ink is solid-printed to form a UV yellow ink layer (dry thickness of about 1.0 μm). An equal amount of a thin vermilion ink layer was applied. A linear low density polyethylene film having a thickness of 50 μm (manufactured by Aicello Chemical Co., Ltd., trade name: L130AS) was dry-laminated on the inner surface of the printed film via a two-component curable urethane adhesive. The light transmittance was similarly measured about the obtained film. The result is shown in FIG.
(Example 6)
The ultraviolet-absorbing yellow ink of Example 5 was solid-printed using a 100-line gravure roll, and applied at a dry thickness of about 1.2 μm with a vermilion ink: transparent ink mixing ratio of 10: 3 by volume. A film was produced in the same manner as in Example 5 except that. The light transmittance was similarly measured about the obtained film. The result is shown in FIG.
(Example 7)
On the inner surface of the same film as in Example 5, UV-absorbing yellow ink was solid-printed to form a UV yellow ink layer (dry thickness of about 1.0 μm), and the same UV-absorbing yellow ink was overcoated in the same manner. . Further, the same amount of a thin vermilion ink layer, the concentration of which was adjusted in the same manner as in Example 1, was applied from above. A sealant layer was laminated on this printed film in the same manner as in Example 5, and the light transmittance of the obtained film was measured in the same manner. The result is shown in FIG.
(Example 8)
On the outer surface of the same film as in Example 1, a solid ink having a volume ratio of 1: 2 mixed with vermilion ink and yellow ink (1) was solid-printed at a dry thickness of about 1.0 μm, and this was repeated twice. A total of three mixed ink layers were formed. A sealant layer was laminated on this printed film in the same manner as in Example 5, and the light transmittance of the obtained film was measured in the same manner. The result is shown in FIG.

(Comparative Example 1)
The same film as in Example 1 (polyethylene terephthalate film having a thickness of 25 μm formed by mixing an ultraviolet absorber) was not printed, and the light transmittance was measured in the same manner for the film. The result is shown in FIG.
(Comparative Example 2)
A vermilion ink was solid-printed on the inner surface of the same film as in Example 1 to form a vermilion ink layer (dry thickness: about 1.0 μm). A sealant layer was laminated on this printed film in the same manner as in Example 5, and the light transmittance of the obtained film was measured in the same manner. The result is shown in FIG.

(Reference example)
Of the printing inks used in the examples and comparative examples, the following optical tests were carried out in order to confirm the respective light blocking effects of the yellow ink (1), the yellow ink (2) and the vermilion ink.
On one surface of a transparent polyethylene terephthalate film (having a light transmittance of 80% or more at a wavelength of 350 to 800 nm), the ink is gravure-printed using a 150-line gravure roll (dry thickness: about 1.0 μm), A printed film was prepared. About each of these printing films and a transparent polyethylene terephthalate film (unprinted), the light transmittance with a wavelength of 200-800 nm was measured with the said measuring apparatus. The result is shown in FIG.

Next, two film pieces obtained by cutting the films of the above examples and comparative examples into a rectangular shape are overlapped so that the sealant layers face each other, and both side edge portions and upper edge portions ( However, a bag-like cover was produced by heat-sealing (except for the center portion of the upper edge). Using such a cover, a separately prepared infusion container (a bag in which about half of the yellow infusion solution was sealed in a colorless and transparent synthetic resin bag) was covered, and this was hung about 50 cm in front of a white wall and separated by 100 cm. From the position, it was confirmed whether the infusion liquid line could be seen through the cover.
The results are shown in Table 1.

The perspective view which shows one Embodiment of the light-shielding cover for infusion containers of this invention. The longitudinal cross-sectional view which shows the light shielding film of this invention. The graph which shows the light transmittance of an Example and a comparative example. The graph which shows the light transmittance of a reference example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Light-shielding film, 2 ... Base film, 3 ... Ultraviolet absorption shielding layer, 5 ... Colored ink layer, 6 ... Sealant layer, 10 ... Light-shielding cover

Claims (3)

On the base film, a colored ink layer comprising at least two ink layers printed with the first ink and the second ink, or a mixed ink layer printed with a mixed ink obtained by mixing the first ink and the second ink, and ultraviolet rays. It consists of a light-shielding film that has been subjected to ultraviolet absorption blocking treatment that absorbs or blocks,
The first ink has a light transmittance of 1% or less in a UV region of a wavelength of 380 nm or less and a light transmittance of 5% or less in a wavelength of 420 to 530 nm when applied to the base film together with the UV absorption blocking treatment. And an ink having a light transmittance of 70% or more in a visible light region having a wavelength of 600 nm or more,
The second ink is laminated on the ink layer of the first ink applied together with the ultraviolet ray absorption blocking treatment and printed on the base film or mixed with the first ink and printed on the base film, and further the wavelength of 380 to 420 nm. A light-shielding cover for an infusion container comprising an ink having a light transmittance of 5% or less and a light transmittance of 70% or more in a visible light region having a wavelength of 600 nm or more. Wherein the first ink, the light shielding cover according to claim 1, wherein the ink shown below.
When gravure printing is performed with a dry thickness of 0.3 to 1.5 μm on a transparent polyethylene terephthalate film having a light transmittance of 80% or more at a wavelength of 350 to 800 nm, the light transmittance at a wavelength of 420 to 530 nm of the printed film. Is an ink showing a portion where the light transmittance is 70% or more at a wavelength of 600 to 800 nm and the light transmittance is 5% or more at a wavelength of 350 to 420 nm. The second ink, the light shielding cover according to claim 1 or 2, wherein the ink shown below.
When gravure printing is performed on a transparent polyethylene terephthalate film having a light transmittance of 80% or more at a wavelength of 350 to 800 nm with a dry thickness of 0.3 to 1.5 μm, the light transmittance at a wavelength of 380 to 420 nm of the printed film. Is 30% or less, light transmittance is 10% or less at a wavelength of 420 to 450 nm, light transmittance is 70% or more at a wavelength of 600 to 800 nm, and light transmittance is 20% or more at a wavelength of 300 to 400 nm. Ink showing the peak part.

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