JP2008296953A - Light-shielding packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag that is aluminum-free, can contribute to separation and recycling, can contribute to reduction of CO<SB>2</SB>by using a raw material derived from a vegetable instead of a fossil raw material, achieves a sufficient function as a sealant material for packaging, shows excellence in sealability, content protection suitability and disposal treatment suitability, and is usable for filling and packaging a food product, a snack confectionery, fats and oils, a frozen food, a chemical product, a medical supply, or the like. <P>SOLUTION: A laminate material is made by laminating a substrate film and a multilayered film made of at least one light-shielding polybutylene succinate resin layer of a resin composition mainly consisting of a polybutylene succinate as a major component and a black pigment. The light-shading packaging bag is made by using the laminate material and making the material into a bag. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a packaging bag. More specifically, the present invention has excellent physical properties such as a light shielding property for shielding sunlight or fluorescent light from the ultraviolet region to the visible region, and has other properties such as content protection suitability and filling packaging suitability. In addition, it is biodegradable, has excellent disposal properties, has good cosmetics, and does not impair the appearance of the package. The present invention relates to a light-shielding packaging bag useful for filling and packaging foods, snacks, optical industrial materials, etc.

Conventionally, as packaging bags for filling and packaging foods, snacks, fats and oils, frozen foods, chemical products, medical products, etc., the contents are protected, especially from the ultraviolet region to the visible region as a measure to prevent fat oxidation Therefore, it is required to have a light shielding property for shielding sunlight or fluorescence.
Thus far, as the light-shielding material, aluminum foil or an aluminum vapor deposition film has been used as the most common material.
By the way, when the above aluminum foil or aluminum vapor deposition film is used, the aluminum foil, aluminum vapor deposition film or the like has a barrier property to prevent the transmission of oxygen gas, water vapor and the like, and also has a light shielding property such as sunlight or fluorescence. Therefore, although it is an extremely useful material, aluminum foil or the like lacks bending resistance, and therefore, not only has a problem that pinholes are easily generated and the barrier property is impaired, but also as a packaging container. When the waste is disposed of as waste after use, for example, when it is disposed of by incineration, etc., a metal such as aluminum remains, which may damage the incinerator, which is not suitable for disposal and has problems such as environmental destruction. This is undesirable because it causes problems such as lack of environmental suitability and the like.
Furthermore, when using an aluminum foil or an aluminum vapor deposition film, for example, using a metal detector or the like to detect a metal piece (foreign matter) or the like mixed in the contents, There is also a problem that it is extremely difficult for the aluminum foil or the aluminum deposited film to react with a metal detector and detect the metal piece (foreign matter) for inspection.

Therefore, in recent years, instead of using the aluminum foil or aluminum deposited film as the light-shielding material, a white colorant or a black colorant is used without using these, and a white or black color containing this is used. A colored layer or film is formed, and the white or black colored layer or film exhibits a light shielding function by reflecting or absorbing sunlight or fluorescence. A new technology has been proposed for use.
Specifically, the content of white pigment is 5 to 20% by weight and the thickness is 10 μm or more, and the content of black pigment is 0.2 to 1.0% by weight, And the laminated film for food packaging formed by laminating the black pigment 1 with a gray film containing a white pigment at a weight ratio of 2.0 to 60 and having a thickness of 10 μm or more, There has been proposed a laminated film for food packaging in which a film layer made of an ethylene-α-olefin copolymer is laminated on the gray film side of the laminated film for food packaging (see, for example, Patent Document 1).

  Thus, the present inventor has also previously described a white resin layer comprising a resin composition containing at least a thermoplastic resin and a white colorant, and a black resin comprising a resin composition comprising at least a thermoplastic resin and a black colorant. A multilayer laminate comprising a layer and a concealing resin layer that conceals the black resin layer in the order of the concealing resin composition comprising at least a thermoplastic resin as a main component of the vehicle. A resin film, or a thermoplastic resin layer comprising a resin composition comprising at least a thermoplastic resin as a main component of a vehicle, a white resin layer comprising at least a thermoplastic resin and a white colorant, and at least a thermoplastic resin; A black resin layer comprising a resin composition comprising a black colorant, and the above-described concealing resin composition comprising at least a thermoplastic resin as a main component of the vehicle. In which proposes a multi-layer laminate resin film characterized in that it consists of construction was coextruded laminated in this order concealing resin layer to conceal the black resin layer (for example, see Patent Document 2.).

  Further, the present inventor has a first white resin layer made of a resin composition containing at least a thermoplastic resin and a white colorant, a black resin layer made of a resin composition containing at least a thermoplastic resin and a black colorant, And a multilayer laminated resin film comprising a structure in which a second white resin layer is co-extruded in the order of a resin composition containing at least a thermoplastic resin and a white colorant, or at least a thermoplastic resin And a first white resin layer made of a resin composition containing a white colorant, a black resin layer made of a resin composition containing at least a thermoplastic resin and a black colorant, and at least a thermoplastic resin and a white colorant. A co-extrusion lamination of a second white resin layer comprising a resin composition containing the resin and a first thermoplastic resin layer comprising at least a thermoplastic resin as a main component of the vehicle. A multilayer laminated resin film, further comprising a second thermoplastic resin layer comprising a resin composition comprising at least a thermoplastic resin as a main component of the vehicle, at least a thermoplastic resin and a white colorant. A first white resin layer comprising a resin composition comprising, a black resin layer comprising at least a thermoplastic resin and a black colorant, and a resin composition comprising at least a thermoplastic resin and a white colorant. A multilayer laminated resin film characterized by comprising a structure in which two white resin layers and a first thermoplastic resin layer of a resin composition containing at least a thermoplastic resin as a main component of a vehicle are co-extruded and laminated in this order. It has been proposed (see, for example, Patent Document 3).

Further, the inventor of the present invention uses a front plate provided with a heat-seal resin layer on the inner surface side and a rear plate provided with a heat-seal resin layer on the inner surface side. Further, a heat-seal resin layer is provided on the inner surface side at the lower end portion between the layers, and is further bent at the upper edge thereof from the inverted V-shaped cross section. And a bottom plate provided with notches in a portion near the pair of bottom edges on both side edges, and a surface of the heat-seal resin layer is provided on the inner surface of the front plate and the rear plate. The heat-seal resin layer disposed on the front plate, the rear plate and the bottom plate at the both end portions and the lower end portion of the heat-seal resin layer. The opposite surfaces of the heat-sealable resin layers provided on the front plate and the rear plate at the notch portions are heat-sealed. In a self-supporting bag that has been heat sealed and formed into a side seal portion and a bottom seal portion on both sides, the heat seal resin layer is formed from a co-extruded multilayer laminated resin film. Further, at least one layer constituting the co-extruded multilayer laminated resin film is composed of a gray colored layer, and the gray colored layer comprises a thermoplastic resin as a main component of the vehicle, and further includes a black pigment and a white pigment. And a black pigment content of 1.0 to 25.0% by weight, and a white pigment content of 1 to 30 times the black pigment content. A self-supporting bag characterized by comprising a gray colored layer is also proposed (for example, see Patent Document 4).
JP-A-11-91042 (Claims) JP 2003-305811 A (Claims) JP 2003-326654 A (Claims) JP-A-2004-331210 (Claims)

However, the laminated film for food packaging according to the above-mentioned Patent Document 1 is used to produce a packaging material from this, and then the packaging material is used to produce a bag to produce a packaging bag. Later, when the packaging bag is used to produce a packaged product by filling and packaging, for example, food, snacks, fats and oils, frozen foods, etc. In the processing process such as bag making or filling packaging, the laminating strength of the laminated film for food packaging constituting the packaging bag, or the heat sealing strength of the heat sealing portion is lacking, There is a problem in that it is difficult to produce a desired packaged product due to delamination or bag breaking.
Moreover, about the laminated | multilayer film for food packaging which concerns on said patent document 1, this was used as a packaging material which wraps the photosensitive material etc. as an industrial member, and this wrapped the photosensitive material and manufactured the packaging product. However, the light shielding function is inferior, and it has been found that the above-described laminated film for food packaging cannot be used as a packaging material for packaging a photosensitive material or the like. In general, a photosensitive material is required to have a high light-shielding property (complete light-shielding) from the ultraviolet region to the visible region in order to protect contents and optical functionality.
By the way, in order to protect products such as photosensitive materials as industrial members, it is necessary to shield light rays in the entire region, and the visible light region of 400 nm to 700 nm and the shielding of ultraviolet light of 400 nm or less It is essential and needs to be shielded even with infrared light of 700 nm or more as much as possible.
Up to now, packaging materials for packaging photosensitive materials and the like have been mainly made of packaging materials made of silver base that complement the light-shielding function from laminated materials of aluminum foil. is there.
However, the use of aluminum foil or the like not only has the above-mentioned problems, but also has the problem of causing deterioration of the working environment and surrounding environment due to the use of an adhesive during lamination. It is.

In addition, the multilayer laminated resin films according to Patent Documents 2, 3, and 4 have a function as a sealant material for packaging and have a light shielding property and the like, and are excellent in hermeticity and suitable for content protection. However, using existing plastics such as polyethylene and polypropylene made mainly from fossil raw materials will lead to an increase in CO ₂ , so simply taking measures / examinations such as separation and recycling It has a problem that it is insufficient for reducing the environmental load.
Therefore, the present invention can replace the light shielding function of aluminum foil and the like, contribute to separation and recycling, and contribute to CO ₂ reduction by using plant-derived materials without using fossil materials. In addition, it performs well as a sealant material for packaging, has excellent sealing properties, is excellent in content protection, and is excellent in disposal, mainly for foods, snacks, fats and oils It is to provide a packaging bag useful for filling and packaging frozen foods, chemical products, medical products, and the like.

  As a result of various studies to solve the above problems, the present inventor has found that at least one layer is a light-blocking polybutylene sac by a resin composition containing polybutylene succinate as a main component and further containing a black pigment. A multilayer laminated film composed of a cine resin layer, or at least one layer is mainly composed of polybutylene succinate, and further contains a black pigment and a white pigment, and the content of the black pigment is Resin comprising 0.1% by weight to 5.0% by weight with respect to the above polybutylene succinate, and the white pigment content is 1 to 30 times the black pigment content. A multilayer laminated film comprising a light-shielding polybutylene succinate resin layer by a composition is produced, and the polybutylene succinate is a main component on both sides of the light-shielding polybutylene succinate resin layer. A transparent or translucent polybutylene succinate resin layer is formed by the resin composition contained in the composition, or a polybutylene succinate is formed on one or both sides of the light-shielding polybutylene succinate resin layer. A resin composition comprising a white pigment and a white pigment content of 5.0% to 30.0% by weight with respect to the polybutylene succinate. A white polybutylene succinate resin layer is laminated to produce a multilayer laminated film, and thus the multilayer laminated film is used as a light shielding and packaging sealant material. On this surface, at least a base film, a barrier base material, and the like are arbitrarily laminated to produce a laminated material, and then the laminated material is used to produce a desired bag for packaging. After manufacturing and after The packaging bag is filled with, for example, food, snacks, fats and oils, frozen foods, chemicals, medical products, etc. to produce a packaged product, which has excellent light shielding properties and is aluminum-free. In addition, it has excellent laminating strength, heat seal strength, etc., and further has strength, etc., and excellent fastness such as weather resistance, heat resistance, water resistance, etc. Excellent light-blocking or light-blocking properties, for example, blocking the transmission of sunlight or fluorescence by the sun or fluorescent lamps, etc., causing the contents to decompose or change quality, or cause light deterioration such as discoloration or others In particular, it has suitability for filling and storage of contents, storage suitability, etc., and in particular, it has extremely excellent utility as a packaging material for photosensitive materials as industrial members that require complete light shielding, and has a packaging appearance. Excellent cosmetics without damage In addition, because it is biodegradable, it is extremely excellent in waste disposal suitability, environmental suitability, etc. without being decomposed in the natural environment and generating harmful substances when it is disposed of after use. The present invention has been completed by finding that a light-shielding packaging bag that can easily detect a metal piece (foreign material) using a metal detector or the like can be manufactured.

  That is, the present invention provides a multilayer laminate comprising a base film and a light-shielding polybutylene succinate resin layer comprising at least one polybutylene succinate as a main component and a resin composition containing a black pigment. The present invention relates to a light-shielding packaging bag characterized in that a laminated material is formed by laminating a film, and further, the laminated material is used to form a bag.

The light-shielding packaging bag according to the present invention is a multilayer laminate comprising at least one layer comprising a polybutylene succinate as a main component and a light-shielding polybutylene succinate resin layer made of a resin composition containing a black pigment. The film acts as a heat-sealable resin layer as well as a light-shielding material, is excellent in light-shielding properties, is aluminum-free, and has a laminated strength, a heat-sealable strength, etc. In addition, it has strength and the like, and is excellent in various fastnesses such as weather resistance, heat resistance, water resistance, etc., in particular, excellent in light shielding properties and light blocking properties, for example, by the sun or fluorescent lamp Blocks the transmission of sunlight, fluorescence, etc., prevents the contents from being decomposed or altered, or causing light deterioration such as discoloration, etc., and has contents packing suitability, storage suitability, etc. , Especially complete shading It is extremely useful as a packaging material for photosensitive materials as required industrial components, has excellent cosmetics without impairing the packaging appearance, and has biodegradability, so it is incinerated after use. When it is disposed of, it does not decompose in the natural environment and does not generate harmful substances, etc., so it is extremely suitable for disposal and environment, and it is easy to detect metal fragments (foreign matter) using a metal detector. It has the advantage that.
In particular, the multi-layer laminated film constituting the light-shielding packaging bag according to the present invention uses polybutylene succinate, and the multi-layer laminated film is mainly composed of the polybutylene succinate. And has the advantage of decomposing in the natural environment.
Thus, the light-shielding packaging bag according to the present invention is filled and packaged with, for example, retort foods, snacks, fats and oils, frozen foods, chemical products, medical products, etc. Can be manufactured.

Hereinafter, the present invention will be described in more detail with reference to the drawings.
First, FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5 are schematic diagrams showing a few examples of the layer structure of the multilayer laminated film forming the laminated material constituting the light-shielding packaging bag according to the present invention. 6 and 7 are cross-sectional views of the laminated material according to the present invention constituting the light-shielding packaging bag according to the present invention manufactured using the multilayer laminated film according to the present invention shown in FIG. FIG. 8 is a schematic cross-sectional view showing one example of the configuration, and FIG. 8 shows a light-shielding packaging bag according to the present invention manufactured by bag-making using the laminated material according to the present invention shown in FIG. FIG. 8 is a schematic perspective view showing an outline of the configuration of the example, and FIG. 8 shows an example of the packaged product according to the present invention in which the contents are filled and packaged in the light-shielding packaging bag according to the present invention shown in FIG. It is a schematic perspective view which shows the outline of a structure.

  First, in the present invention, the multilayer laminated film forming the laminated material constituting the light-shielding packaging bag according to the present invention will be described. As the multilayer laminated film A according to the present invention, for example, as shown in FIG. And a light-blocking polycrystal made of a resin composition comprising at least one layer of polybutylene succinate as a main component and further comprising a black pigment. The butylene succinate resin layer 2 or at least one layer is mainly composed of polybutylene succinate, further contains a black pigment and a white pigment, and the content of the black pigment is the above-mentioned poly Resin group consisting of 0.1% to 5.0% by weight of butylene succinate, and having a white pigment content of 1 to 30 times the black pigment content In which a basic structure that consists preparative resin layer 2a - shielding polybutylene succinate by things.

Thus, a specific example of the multilayer laminated film according to the present invention is illustrated as shown in FIG. 2. As shown in FIG. 2, the light-shielding polycrystal by a resin composition containing polybutylene succinate as a main component and further containing a black pigment. The butylene succinate resin layer 2 or the polybutylene succinate as a main component, further containing a black pigment and a white pigment, and the content of the black pigment is the above-mentioned polybutylene succinate The light-shielding polybutylene is a resin composition comprising 0.1 to 5.0% by weight of the white pigment, and the white pigment content is 1 to 30 times the black pigment content. A succinate resin layer 2a, further comprising polybutylene succinate as a main component on both sides of the light-shielding polybutylene succinate resin layer 2 or 2a, and further containing a white pigment; and White pigment content is Coextruded multilayer laminated film having a structure in which white polybutylene succinate resin layers 3 and 3 are laminated with a resin composition comprising 1.0% by weight to 30.0% by weight with respect to polybutylene succinate. 1 is a multilayer laminated film A _{1 according} to the present invention.

Next, as another specific example of the multilayer laminated film according to the present invention, as shown in FIG. 3, the light shielding property by a resin composition containing polybutylene succinate as a main component and further containing a black pigment. A polybutylene succinate resin layer 2 or a polybutylene succinate as a main component, further containing a black pigment and a white pigment, and the content of the black pigment is the above-mentioned polybutylene succinate The light-shielding poly- mer of the resin composition comprising 0.1% by weight to 5.0% by weight of the white pigment, and the white pigment content is 1 to 30 times the black pigment content. Comprising a butylene succinate resin layer 2a, further comprising polybutylene succinate as a main component on both sides of the light-shielding polybutylene succinate resin layer 2 or 2a, and further comprising a white pigment; and White pigment content White polybutylene succinate resin layers 3 and 3 made of a resin composition comprising 1.0% by weight to 30.0% by weight with respect to polybutylene succinate. Transparent or translucent polybutylene succinate resin layers 4 and 4 made of a resin composition containing polybutylene succinate as a main component are laminated on both surfaces of the polybutylene succinate resin layers 3 and 3. A multilayer laminated film A _{2 according} to the present invention comprising the coextruded multilayer laminated film 1 having the structure can be exemplified.

Further, another specific example of the multilayer laminated film according to the present invention is illustrated. As shown in FIG. 4, light shielding by a resin composition containing polybutylene succinate as a main component and further containing a black pigment. The polybutylene succinate resin layer 2 or the polybutylene succinate as a main component, further containing a black pigment and a white pigment, and the content of the black pigment is the above-mentioned polybutylene succinate The light shielding property by the resin composition comprising 0.1% by weight to 5.0% by weight with respect to the cine, and the white pigment content being 1 to 30 times the black pigment content. A transparent or semi-transparent resin composition comprising a polybutylene succinate resin layer 2a, and further comprising a polybutylene succinate resin layer 2 or 2a on both sides of the light-shielding polybutylene succinate resin layer 2 or 2a. Transparent Polybutylene succinate - a multi-layer laminate film A ₃ according to the present invention comprising a coextruded multilayer laminate film 1 having the structure of laminating a preparative resin layer 4, 4 can be exemplified.

Furthermore, another specific example of the multilayer laminated film according to the present invention is illustrated. As shown in FIG. 5, a light-shielding poly- mer by a resin composition containing polybutylene succinate as a main component and further containing a black pigment. The butylene succinate resin layer 2 or the polybutylene succinate as a main component, further containing a black pigment and a white pigment, and the content of the black pigment is the above-mentioned polybutylene succinate The light-shielding polybutylene is a resin composition comprising 0.1 to 5.0% by weight of the white pigment, and the white pigment content is 1 to 30 times the black pigment content. A succinate resin layer 2a, further comprising, on one side of the light-blocking polybutylene succinate resin layer 2 or 2a, polybutylene succinate as a main component, and further containing a white pigment; And containing white pigment A white polybutylene succinate resin layer 3 made of a resin composition comprising 1.0 to 30.0% by weight of polybutylene succinate is laminated, Resin containing polybutylene succinate as a main component on both sides of the other surface of the conductive polybutylene succinate resin layer 2 or 2a and the surface of the white polybutylene succinate resin layer 3 A multilayer laminated film A _{4 according} to the present invention comprising the coextruded multilayer laminated film 1 having a constitution in which transparent or translucent polybutylene succinate resin layers 4 and 4 are laminated by the composition can be exemplified.

The above illustrations illustrate a few examples of the multilayer laminated film according to the present invention, and it goes without saying that the present invention is not limited thereto.
In the multilayer laminated film according to the present invention, although not shown, the white polybutylene succinate resin layer or the transparent or translucent polybutylene succinate resin layer can be laminated in any combination. Is.
In the multilayer laminated film according to the present invention, the white polybutylene succinate resin layer or the transparent or translucent polybutylene succinate resin layer can be laminated not only in one layer but also in multiple layers. It is.
Furthermore, in the present invention, although not shown in the drawings, it is possible to design and manufacture coextruded multilayer laminated films having various forms by arbitrarily laminating other base materials depending on the purpose of use, application, etc. It is.

  By the way, the multilayer laminated film according to the present invention basically functions as a light-shielding material as well as a heat-sealable resin layer, is excellent in light-shielding properties, is aluminum-free, and has a laminating property. -Excellent in strength, heat seal strength, etc., and further has strength, etc. and excellent fastness such as weather resistance, heat resistance, water resistance, etc. Excellent shielding properties, for example, blocking the transmission of sunlight or fluorescence by the sun or fluorescent lamps, etc., and extremely useful as a packaging material for filling and packaging photosensitive materials as industrial members that require complete light shielding Heat sealant that acts as a light-blocking or light-blocking layer that prevents the contents from being decomposed or altered, or causing light deterioration such as discoloration, etc. Made as a layer In addition, it has suitability for packing and storage of contents, storage suitability, etc. Furthermore, since it is mainly made of polybutylene succinate, it is biodegradable in the natural environment, and is disposed of by incineration after use. It has the advantage that it does not react with a metal (foreign substance) detector or the like, and is extremely excellent in disposal processing suitability, environmental suitability, etc. without generating harmful substances.

The multilayer laminated film according to the present invention will be described more specifically. In the multilayer laminated film according to the present invention, the light-shielding polybutylene succinate resin layer is basically composed mainly of white polybutylene succinate. It acts synergistically with the resin layer, absorbs sunlight or fluorescence from the sun or fluorescent lamp, etc., and acts as a light-shielding or light-shielding layer that blocks its transmission.
Next, in the multilayer laminated film according to the present invention, the white polybutylene succinate resin layer is basically a protective layer mainly protecting or concealing the light-shielding polybutylene succinate resin layer. Or a concealing layer and a light-blocking or light-blocking layer that reflects or diffuses sunlight or fluorescent light from the sun or fluorescent lamps and blocks the transmission thereof, and further, white polybutylene sac. For example, when a desired printed pattern such as a character, symbol, pattern, figure, or the like is directly or indirectly formed on the cine resin layer, the white polybutylene succinate resin layer is It acts as a foundation layer that sharpens the printed pattern of the desired characters, symbols, patterns, figures, etc. that make up the printed pattern, and the white polybutylene succinate resin layer When constitute laminate as packaging material, which bag making using this, for example, shea - heat forming a pole tip, etc. - tosylate - is intended to act as Le resin layer or the like.

Further, in the multilayer laminated film according to the present invention, the transparent or translucent polybutylene succinate resin layer is basically mainly composed of the above light-shielding polybutylene succinate resin layer or white polybutylene. Acts as a protective layer for protecting the succinate resin layer, etc., and in some cases, acts as a concealing layer for concealing these, and further on the transparent or translucent polybutylene succinate resin layer. In addition, for example, when a printed pattern such as a desired character, symbol, pattern, figure, etc. is directly or indirectly formed, the transparent or translucent polybutylene succinate resin layer constitutes the printed pattern. Acts as a base layer to sharpen the printed pattern of desired characters, symbols, patterns, figures, etc., and the transparent or translucent polybutylene succinate resin layer is And forming the laminated material as a packaging material to be described, when the bag making using this, for example, shea - heat forming a pole tip - tosylate - is intended to act as Le resin layer or the like.
Moreover, since the multilayer laminated film according to the present invention uses polybutylene succinate and constitutes the multilayer laminated film using this as a main material, it itself has biodegradability and is in a natural environment. It has the advantage of decomposing.
Furthermore, since the multilayer laminated film according to the present invention is aluminum-free, it is extremely excellent in waste disposal suitability, environmental suitability, etc. without generating harmful substances when incineration disposal after use. In addition, it has the advantage of facilitating the inspection of metal pieces (foreign matter) using a metal detector or the like.

Next, in the present invention, the laminated material according to the present invention manufactured using the multilayer laminated film according to the present invention as described above will be described. As the laminated material according to the present invention, as shown in FIG. In the case where the multilayer laminated film A _{1 according} to the present invention shown in FIG. 2 is used, first, for example, a desired character, symbol, pattern, etc. , graphics, after forming the printed pattern layer 12 made of other like, on the surface of the base film 11 containing the printed pattern layer 12, the multilayer laminate film a ₁ according to the present invention shown in FIG. 2 above, it The laminated material B according to the present invention produced using the multilayer laminated film according to the present invention can be produced by superposing and laminating one of the surfaces constituting the laminate.

Next, in the present invention, another example of the laminated material according to the present invention is illustrated. As the laminated material according to the present invention, as shown in FIG. 7, the multilayer laminated material according to the present invention shown in FIG. In the case where the film A ₁ is used, first, a printed pattern layer 12 made of, for example, desired characters, symbols, patterns, figures, etc. is formed on the back surface of the desired base film 11 made of corona treatment or the like. Then, the barrier substrate 13 is laminated on the surface of the substrate film 11 including the printed pattern layer 12, and then the surface of the barrier substrate 13 laminated as described above is shown in FIG. producing multilayer laminated films a _1, by stacking one surface constituting the superimposed are opposed, the laminate B ₁ according to the present invention prepared by using the multilayer laminated film according to the present invention according to can do.
Incidentally, in the above FIGS. 6 and 7, reference numeral, 1,2,2A, 3, meaning such as A ₁ represents reference numerals in FIG. 2 described above, 2, 2a, the same meaning as 3, A, and the like.
The above exemplification illustrates one or two examples of the laminated material according to the present invention manufactured using the multilayer laminated film according to the present invention, and the present invention is not limited thereto. is there.

For example, although not shown, the laminated material according to the present invention has, for example, a base material such as a barrier base material or the like between each layer depending on, for example, the contents to be filled and packed, the packaging purpose, the packaging form, and the like. The laminated material according to the present invention having various forms can be produced by arbitrarily laminating.
Although not shown, instead of forming a printed pattern layer or the like on the back surface of the base film as described above, the white polybutylene succinate resin layer constituting the multilayer laminated film according to the present invention, or transparent After forming a printed pattern layer composed of desired characters, symbols, patterns, figures, etc. on the surface of a translucent polybutylene succinate or the like, a substrate film is formed on the surface including the printed pattern layer. The laminated material according to the present invention using the multilayer laminated film according to the present invention can be produced by superposing and laminating.
Of course, in the present invention, the multilayer laminated film according to the present invention shown in FIGS. 3 to 5 is used, and the laminated material according to the present invention can be produced in the same manner as described above.

  In addition, in the above, as a laminating method for laminating at least the base film and the multilayer laminated film according to the present invention, for example, a laminating adhesive layer with a laminating adhesive or the like is provided, and then A dry laminating lamination method in which at least the base film and the multilayer laminated film according to the present invention are laminated via the laminating adhesive layer, or an adhesion assistant layer by an anchor coating agent or the like. A melt-extruded resin layer, etc., and then at least a base film and a multilayer laminated film according to the present invention through an adhesion assistant layer, a melt-extruded resin layer, etc. by the anchor coat agent. It can carry out by the melt extrusion lamination system etc. which laminate.

Next, in the present invention, when the laminated material according to the present invention as described above is used and the light-shielding packaging bag according to the present invention manufactured by bag-making the same is illustrated as an example, such a book will be described. As a light-shielding packaging bag according to the invention, for example, the case of a light-shielding packaging bag made using the laminated material B according to the present invention shown in FIG. 6 will be described with reference to FIG. As shown, the two laminates B according to the present invention are used, and the surfaces of the multilayer laminate films A ₁ and A ₁ according to the present invention constituting the two laminates B and B are opposed to each other. Overlap, and then the opposing surfaces of the multilayer laminated film A ₁ , A _{1 according} to the present invention as a heat-sealable resin layer, and heat-seal the edges around the outer periphery, The side seal portions 21 and 21, the bottom seal portion 22, and the like are formed, and the opening 23 is formed upward. The three-way seal type light-shielding packaging bag C according to the present invention can be manufactured by forming the bag and using the laminated material B according to the present invention.

Thus, in the present invention, as shown in FIG. 9, the three-way seal type light-shielding packaging bag C according to the present invention manufactured as described above is used. Foods and beverages such as snacks, fats and oils, frozen foods, etc., and other contents 24 are filled, then the opening 23 is heat sealed, and the upper heat seal 25 The packaged product D according to the present invention manufactured using the light-shielding packaging bag C according to the present invention can be manufactured.
The above illustration is an example of the light-shielding packaging bag according to the present invention and a packaged product using the same, and the present invention is not limited thereto, for example, for light-shielding packaging. Although not illustrated, the form of the bag may be, for example, a packaging bag form suitable for the contents such as a pillow packaging form, a gusset packaging form, a standing (self-supporting) pouch packaging form, and the like.
Further, in the present invention, the laminated material according to the present invention manufactured using the multilayer laminated film according to the present invention shown in FIGS. The light-shielding packaging bag according to the present invention can be manufactured.

Next, in the present invention, the multilayer laminated film, the laminated material, the light-shielding packaging bag, the material constituting the packaged product and the like according to the present invention as described above, and the production method thereof will be described. Specifically, as polybutylene succinate constituting the multilayer laminated film according to the present invention, 1.4-butanediol and succinic acid are used as the main components and subjected to direct dehydration polycondensation. It is possible to use a biodegradable polyester made of an aliphatic polyester-based resin and having a physical property similar to that of a polyolefin-based resin.
Thus, in the present invention, the polybutyl succinate has, for example, a melt flow rate (MFR) of 1.0 to 30.0 g / 10th, preferably 3.0 to 20. Polybutylene having a density of about 1.20 to 1.30 g / cm ³ and a melting point of about 80 to 120 ° C. within a range of 0 g / 10 minutes (190 ° C., 2.16 kg). Succinate can be used.
In the present invention, melt flow rate (MFR) is measured from a method based on JIS K6921 (190 ° C.), and the density is measured from a method based on JIS K7112.
The same applies hereinafter.
In the present invention, the aliphatic dicarboxylic acid unit constituting the aliphatic polyester resin can be partially or entirely modified with an aromatic dicarboxylic acid unit.

In the present invention, since the polybutylene succinate is a resin having a relatively low melting point and flexibility, it is given rigidity, hardness, etc. 1 such as a modifier that modifies polybutylene succinate, such as improving film-forming suitability, improving impact resistance, etc., for example, improving heat sealability during bag making, etc. It is also possible to use a mixed resin obtained by kneading polybutylene succinate and a modifier by adding seeds or more.
Specifically, in the present invention, as the polybutylene succinate, the polybutylene succinate and the modifier are blended in the former 51 to 95 parts by weight and the latter 5 to 49 parts by weight. A mixed resin of polybutylene succinate and modifier formed by kneading can be used.
Specifically as said modifier, the modifier etc. which consist of polylactic acid resin, adipic acid ester, or a polyester-type elastomer can be used specifically, for example.

Thus, the polylactic acid resin is, for example, a polymer mainly composed of L-, D-, or DL-lactic acid units, having transparency and having similar physical properties as a soft type polyolefin-based resin. The biodegradable polyester can be used.
Thus, as the above-mentioned polylactic acid resin, specifically, for example, the melt flow rate (MFR) is about 1.0 to 20.0 g / 10 minutes, preferably 1.5 to 12.0 g / Within a range of about 10 minutes (190 ° C., 2.16 kg), a density of about 1.10 to 1.30 g / cm ³ , a melting point of about 150 to 170 ° C., and in an amorphous type Can use polylactic acid resin in the range of Tg = 50-70 degreeC.
In the present invention, the polylactic acid resin is basically relatively soft, melts by heat, has heat sealability, and further has melt tension and stretchability. It is preferable to use a polylactic acid resin as a biodegradable resin that is excellent in the above and has the coextrusion molding suitability described later.

Moreover, in the above, as said adipic acid ester, the plasticizer etc. which consist of a diesterification thing of adipic acid and a higher alcohol can be used, for example.
Specifically, a plasticizer (trade name, DAIFACTY-101) made of adipic acid ester manufactured by Daihachi Chemical Industry Co., Ltd. can be used.

Furthermore, in the above, as the polyester elastomer, for example, a polyester portion having a high melting point (T _m ) as a hard segment and a polyester having a low melting point (T _m ) to a low glass transition temperature (T _g ) or A polyester elastomer having a polyester portion as a soft segment can be used.
Specifically, a product name made by Toray DuPont Co., Ltd., a polyester elastomer such as High Retort 4057, or the like can be used.

Thus, in the present invention, a modifier comprising the above polylactic acid resin, adipic acid ester or polyester elastomer is added to polybutylene succinate as described above, and these are kneaded. By preparing a mixed resin, the Tg (glass transition temperature) of the above polybutylene succinate is lowered, and further, the tensile modulus and the bending modulus are drastically lowered. To improve aptitude.
Thus, for example, it acts on a relatively soft polyester resin matrix in a modifying manner.
In the present invention, since it has a high affinity with polybutylene succinate, a hard segment (aliphatic polyester resin) and a soft segment (modifier) are mixed so that a rubber-like impact resistant material can be produced. Is.

Thus, in the present invention, the above polybutylene succinate and the modifying agent comprising polylactic acid resin, adipic acid ester or polyester-based elastomer for modifying the same are 51 to 95% by weight. The latter is preferably kneaded at a blending ratio of 5 to 49% by weight, preferably 60 to 90% by weight of the former and 10 to 40% by weight of the latter to prepare a mixed resin composed of both. .
In the above, if the polybutylene succinate is less than 51% by weight, and further less than 60% by weight, the stiffness and the like of the film are reduced, and the strength as the film is reduced. When polybutylene succinate exceeds 95% by weight, and more than 90% by weight, there is a concern that the flexibility may be lowered and the impact resistance may be anxious. .
On the other hand, in the above, if the modifier is less than 5% by weight, further less than 10% by weight, it is not preferable because there is a concern that the flexibility is lowered and the impact resistance is concerned, If the modifier exceeds 49% by weight, or even 40% by weight, it is not preferable because the stiffness and rigidity of the film are reduced and the strength as a film is reduced.

Next, in the present invention, as the black pigment constituting the multilayer laminated film or the like according to the present invention, for example, sunlight or fluorescent light such as the sun or a fluorescent lamp is absorbed (mainly from the near ultraviolet to the visible region). ) To prevent or block the permeation and prevent the degradation or alteration of the contents filled and packaged in the packaging bag, or light deterioration such as fading, etc. Specifically, for example, black It is desirable to use a mixture of one or more kinds of colorants such as various inorganic or organic dyes and pigments.
In the present invention, examples of colorants such as various black inorganic and organic dyes and pigments include iron black, graphite, or carbon black, and electrically conductive materials (polyaniline, polypyrrole). -1) or 2 or more types of black pigments such as other can be used.
Therefore, in the present invention, the carbon black as the black pigment is a carbon black as a special pigment of benzpyrene free which avoids the incorporation of benzpyrene, which has recently been pointed out to be carcinogenic. Is preferably used.
In the present invention, the black pigment is used in an amount of about 0.1 wt% to 5.0 wt%, preferably 0.5 wt% to 3.0 wt%, relative to the polylactic acid resin forming the resin composition. It is desirable to add about%.

Next, in the present invention, the white pigment constituting the multilayer laminated film according to the present invention, for example, reflects or diffuses sunlight or fluorescent light such as the sun or a fluorescent lamp, and blocks or blocks its transmission. In addition, it is intended to prevent the degradation or alteration of the contents filled and packaged in the packaging bag, or the light deterioration such as discoloration, etc. Specifically, for example, various inorganic or organic white type It is desirable to use a mixture of one or more colorants such as dyes and pigments.
In the present invention, the above-mentioned various colorants such as white inorganic and organic dyes and pigments include, for example, basic lead carbonate, basic lead sulfate, basic lead silicate, zinc white, sulfide. One or more of white pigments such as zinc, lithopone, antimony trioxide, anatase-type titanium oxide, rutile-type titanium oxide, calcium carbonate, zinc oxide, barium sulfate, etc. can be used.
Thus, the amount of the white pigment used is preferably about 1 to 30 times the content of the black pigment when the light-shielding polylactic acid resin layer is formed. Is formed in an amount of about 1.0 to 30.0% by weight, preferably about 3.0 to 20.0% by weight, based on the polylactic acid resin forming the resin composition. It is desirable to use it.

  Next, in the present invention, each resin composition constituting the multilayer laminated film according to the present invention will be described. First, a light-shielding polybutylene succinate resin layer constituting the multilayer laminated film according to the present invention is formed. As the resin composition, for example, one or more of the above polybutylene succinates are used as the main component of the vehicle, and to this, one or more of the above black pigments are added, and The content of the black pigment is about 0.1% by weight to 5.0% by weight, preferably 0.5% by weight to 5.0% by weight with respect to polybutylene succinate. In addition, if necessary, when forming the film, for example, film processability, heat resistance, weather resistance, mechanical properties, dimensional stability, antioxidant properties, slipperiness, releasability, flame retardancy , Anti-mold, electrical properties, strength, etc. For the purpose of improving and modifying the above, one or more kinds of various plastic compounding agents and additives are arbitrarily added, and if necessary, a solvent, a diluent and the like are added and kneaded sufficiently. Thus, a resin composition for forming the light-blocking polybutylene succinate resin layer according to the present invention can be prepared.

  Moreover, in this invention, as a resin composition which forms the light-shielding polybutylene succinate resin layer which comprises the multilayer laminated film which concerns on this invention, it is 1 type thru | or 2 of said polybutylene succinate, for example More than one species is used as the main component of the vehicle, to which one or more of the above black pigments and one or more of the above white pigments are added, and the content of the above black pigment is The polybutylene succinate comprises 0.1% to 5.0% by weight, and the content of the white pigment is 1 to 30 times the content of the black pigment. For example, film processing property, heat resistance, weather resistance, mechanical properties, dimensional stability, when forming the film, if necessary. Properties, antioxidant properties, slipperiness, releasability, flame retardancy, For the purpose of improving and modifying moldability, electrical characteristics, strength, etc., one or more kinds of various plastic compounding agents and additives are arbitrarily added, and if necessary, a solvent, A resin composition for forming a light-blocking polybutylene succinate resin layer according to the present invention can be prepared by adding a diluent and the like and kneading sufficiently.

  Next, in the present invention, as the resin composition for forming the white polybutylene succinate resin layer constituting the multilayer laminated film according to the present invention, for example, one kind of the above polybutylene succinate or Two or more types are used as the main component of the vehicle, and one or more of the above white pigments are added thereto, and the content of the above white pigment is 1.0 wt% to 30.0 wt%. In addition, for example, when forming the film, if necessary, for example, film processability, heat resistance, weather resistance, mechanical properties, dimensional stability, antioxidant properties, slipperiness, mold release 1 to 2 or more kinds of various plastic compounding agents and additives are optionally added for the purpose of improving and modifying the property, flame retardancy, antifungal property, electrical characteristics, strength, etc. If necessary, add a solvent, diluent, etc. and knead thoroughly. White polybutylene succinate according to the present invention - it is possible to prepare a resin composition for forming a preparative resin layer.

Next, in the present invention, as a resin composition for forming a transparent or translucent polybutylene succinate resin layer constituting the multilayer laminated film according to the present invention, for example, the above-mentioned polybutylene succinate One or two or more types are the main components of the vehicle, and if necessary, for example, when forming the film, for example, film processability, heat resistance, weather resistance, mechanical properties, dimensional stability, resistance, One or two kinds of various plastic compounding agents and additives for the purpose of improving and modifying oxidation, slipperiness, releasability, flame retardancy, antifungal property, electrical properties, strength, etc. A resin composition for forming the transparent or translucent polybutylene succinate resin layer according to the present invention by arbitrarily adding the above, and if necessary, adding a solvent, a diluent, etc., and kneading sufficiently. Things can be adjusted.
In the present invention, the resin composition forming the transparent or translucent polybutylene succinate resin layer according to the present invention includes, for example, the above-described light-shielding polybutylene succinate resin layer, In order to conceal the white polybutylene succinate resin layer, for example, one or more colorants such as chromatic dyes and pigments are added, and at least the polybutylene succinate is added to the vehicle. A resin composition containing as a main component can be prepared.
In the above, as colorants such as chromatic dyes / pigments, for example, azo dyes / pigments, anthraquinone dyes / pigments, phthalocyanine dyes / pigments, quinacridone dyes / pigments, dioxazine dyes / pigments, etc. Inorganic pigments such as organic dyes / pigments, yellow lead, chromium vermilion, bitumen, petal, etc. can be used.
Of course, in the present invention, the above-mentioned white pigment can also be used.

  In the present invention, in each resin composition constituting the multilayer laminated film according to the present invention, examples of the plastic compounding agent and additive include a lubricant, a crosslinking agent, an antioxidant, and an ultraviolet absorber. , Light stabilizers, fillers, reinforcing agents, antistatic agents, flame retardants, flame retardants, foaming agents, antifungal agents, pigments, dyes, dispersants, surfactants, antiblocking agents, etc. Further, a modifying resin or the like can be used, and the addition amount can be arbitrarily added from a very small amount to several tens of weight% depending on the purpose.

Furthermore, in the above, as the compounding agent or additive, specifically, a lubricant having its own lubricity and little migration in the resin can be used. For example, liquid paraffin, white Vaseline, petroleum wax, microcrystalline wax, montan wax, polyethylene wax and the like, higher fatty acids having 8 to 22 carbon atoms, or higher fatty acid aluminum, higher fatty acid calcium, higher fatty acid magnesium higher fatty acid zinc, higher fatty acid lithium Higher fatty acids or metal salts thereof, linear aliphatic monohydric alcohols having 8 to 18 carbon atoms, glycerin, sorbitol, propylene glycol, pentaerythritol, triethylene glycol, etc. Aliphatic alcohols, higher fatty acids having 4 to 22 carbon atoms and straight chain aliphatics having 8 to 18 carbon atoms Esters with polyhydric alcohols, butyl acetyl citrate, di-2-ethyl-hexyl adipate, azelaic acid-n-hexyl, ethanediol montanate, poly (1.3-butanediol adipate) ester, acetylricino Methyl ester, poly (1.3-butylene glycol, 1.4-butylene glycol, octyl alcohol adipic acid) ester, ester of sugar sugar sugar and fatty acid, hydrogenated Edible fats and oils, castor oil, spam acetyl wax, glycerides of acetylated monoglyceride sugar, ethylene bis-fatty acid amide represented by, for example, ethylene bisoleyl amide having 16 to 18 carbon atoms, higher fatty acid amide having 8 to 22 carbon atoms , Stearyl erucamide, erucic acid amide, oleyl palmitoamide, etc. 1 to 2 types of fatty acid amides, and others such as methylhydrodiene polysiloxane, dimethyl polysiloxane, methylphenyl polysiloxane, silicone oil jarodine such as polyoxyalkylene dimethylpolysiloxane, and glycerin ester of maleic acid modified rosin The above can be used.
In the present invention, among the lubricants as described above, erucic acid amide, ethylene bis oleyl amide, stearic acid amide, oleic acid amide, methylene bis stearic acid amide, etc., are themselves slippery, It is a very effective material.
As the addition amount of the above-mentioned lubricant, it is preferable to add at a ratio of about 0.08 wt% to 10.0 wt% with respect to 100 parts by weight of the polypropylene resin.

In the present invention, other oxides such as aluminum oxide, magnesium oxide, silica, calcium oxide, titanium oxide, and zinc oxide; hydroxides such as aluminum hydroxide, magnesium hydroxide, and calcium hydroxide; Carbonates such as magnesium and calcium carbonate, sulfates such as calcium sulfate and barium sulfate, silicates such as magnesium silicate, aluminum silicate, calcium silicate and aluminosilicate, and others such as kaolin, talc and diatomaceous earth Anti-blocking agent based on inorganic compounds, or high density polyethylene, ultra-high molecular weight polyethylene having a molecular weight of 300000 or more, polypropylene, polycarbonate, polyamide, polyester, melamine resin, diallyl phthalate resin, acrylic resin, etc. Organic consisting of fine powder It one free of compounds based antiblocking agents can be added two or more.
The addition amount is preferably about 0.01 to 3% by weight with respect to 100 parts by weight of the polypropylene resin.

  Next, in the present invention, a method for producing a multilayer laminated film according to the present invention using each resin composition as described above will be described. First, in the present invention, each resin composition is as described above. And then using two or more of the resin compositions and then co-extrusion of the resin compositions using, for example, a T-die co-extruder, an inflation co-extruder, etc. And the multilayer laminated film which concerns on this invention can be manufactured.

  Thus, in the present invention, a specific method for producing a multilayer laminated film according to the present invention using each of the resin compositions as described above will be described. In the present invention, first, as described above, A resin composition for forming a light-blocking polybutylene succinate resin layer according to the invention and a resin composition for forming a white polybutylene succinate resin layer according to the present invention were prepared, and then No. 2 These resin compositions are used, and these are co-extruded using, for example, a T-die co-extruder, an inflation co-extruder, etc., and consist of a co-extruded multilayer laminated film according to the present invention. The first layer is a white polybutylene succinate resin layer, the second layer is a light-shielding polybutylene succinate resin layer, and the third layer is a white polybutylene succinate resin layer. 3 layers were co-extrusion laminated in this order It is possible to manufacture a multilayer laminated film composed of two or three layers according to the present invention comprising the formation.

  Furthermore, in the present invention, another specific method for producing the multilayer laminated film according to the present invention using each of the resin compositions as described above will be described. In the present invention, first, as described above, Preparing a resin composition for forming a light-blocking polybutylene succinate resin layer according to the invention and a resin composition for forming a transparent or translucent polybutylene succinate resin layer according to the present invention; The two types of resin compositions are used, and these are co-extruded using, for example, a T-die co-extruder, an inflation co-extruder, etc., from the co-extruded multilayer laminated film according to the present invention. Furthermore, the first layer is a transparent or translucent polybutylene succinate resin layer, the second layer is a light-shielding polybutylene succinate resin layer, and the third layer is transparent or translucent. The polybutylene cactus Ne - it is possible to produce a multilayer laminated film composed of two or three layers according to the present invention comprising successively with three-layer co-extruded laminated structure of bets resin layer.

  Further, in the present invention, another specific method for producing the multilayer laminated film according to the present invention using each of the resin compositions as described above will be described. In the present invention, first, as described above, A resin composition for forming a light-blocking polybutylene succinate resin layer according to the present invention, a resin composition for forming a white polybutylene succinate resin layer according to the present invention, and a transparent or A resin composition for forming a translucent polybutylene succinate resin layer is prepared, and then the three kinds of resin compositions are used, for example, a T-die co-extruder and an inflation co-extruder. Co-extrusion molding using an extruder or the like is made of the co-extrusion multilayer laminated film according to the present invention, and the first layer is a transparent or translucent polybutylene succinate resin layer and the second layer is White polybuty Four-layer coextrusion lamination of a non-succinate resin layer, a third layer of a light-shielding polybutylene succinate resin layer, and a fourth layer of a transparent or translucent polybutylene succinate resin layer The multilayer laminated film which consists of 3 types and 4 layers based on this invention which consists of the structure which carried out can be manufactured.

  Furthermore, in the present invention, another specific method for producing the multilayer laminated film according to the present invention using each resin composition as described above will be described. In the present invention, first, as described above, A resin composition for forming a light-blocking polybutylene succinate resin layer according to the present invention, a resin composition for forming a white polybutylene succinate resin layer according to the present invention, and a transparent or A resin composition for forming a translucent polybutylene succinate resin layer is prepared, and then the three kinds of resin compositions are used, for example, a T-die co-extruder and an inflation co-extruder. Co-extrusion molding using an extruder or the like is made of the co-extrusion multilayer laminated film according to the present invention, and the first layer is a transparent or translucent polybutylene succinate resin layer and the second layer is White polybuty The non-succinate resin layer, the third layer is a light-blocking polybutylene succinate resin layer, the fourth layer is a white polybutylene succinate resin layer, and the fifth layer is transparent or translucent. A multilayer laminated film composed of three types and five layers according to the present invention having a constitution in which five polybutylene succinate resin layers are coextruded and laminated in this order can be produced.

The above examples illustrate a few examples of the method for producing a multilayer laminated film according to the present invention, and the present invention is not limited thereto.
In general, when the multilayer laminated film according to the present invention is formed by extrusion using each of the resin compositions as described above, for film formation, for example, at the time of product replacement (purge) Because it is burdened with work such as disassembly and cleaning of an extruder, etc., it is desired to avoid the use of colorants such as pigments in the resin composition, and it is desired to form a film without colorant addition It is. Therefore, in the present invention, as an outer layer, in order to form a laminated film that does not cause stains due to colorants such as pigments, in a die that is difficult to disassemble, although it is difficult to avoid stains due to colorants such as pigments in an extruder. In addition, a resin composition mainly composed of a transparent or translucent polybutylene succinate resin to which no colorant such as pigment is added is used, so that a resin film containing no colorant such as pigment is formed in a thickness of 5 μm to 100 μm. This has the advantage of protecting the dirt on the die.
In the present invention, the light-blocking polybutylene succinate resin layer, the white polybutylene succinate resin layer, and the transparent or translucent polybutylene are used in the production of the multilayer laminated film according to the present invention. The succinate resin layer or the like can be coextruded and laminated not only in one layer but also in two or more layers.
Furthermore, in the present invention, as the multilayer laminated film according to the present invention, other materials are used depending on the purpose of use, applications, etc., and these are arbitrarily coextruded and laminated to form a coextruded multilayer having various forms. A laminated resin film can be designed and manufactured.

Thus, in the present invention, the light-blocking or light-blocking layer composed of two layers of the light-blocking polybutylene succinate resin layer and the white polybutylene succinate resin layer as described above is used. This layer absorbs sunlight, etc., and reflects or diffuses sunlight, etc. in the other layer, and through the synergistic effect of the two layers, it completely transmits sunlight or fluorescent light, etc. composed of the sun or fluorescent lamps. In this way, the effect of further preventing or degrading the contents filled or packaged in the bag or preventing the light deterioration such as discoloration or the like is further increased.
Further, in the present invention, the white polybutylene succinate resin layer has an effect of a protective layer for protecting the light-shielding polybutylene succinate resin layer or the like, or a concealing layer for concealing. It can be played.
Furthermore, in the present invention, one of the above-mentioned white polybutylene succinate resin layers has a function of an underlayer of a printed pattern layer provided directly or indirectly on the layer, and printing The printed image of characters, figures, symbols, patterns, etc. that make up the pattern layer is further clarified, and the beautiful printed pattern can be reproduced or manifested, and the white polybutylene succine -The other side of the toe resin layer has an effect of having a function as a heat-sealable resin layer for forming a seal part or the like at the time of bag making or the like.
In the present invention, the transparent or translucent polybutylene succinate resin layer protects the light-shielding polybutylene succinate resin layer or the white polybutylene succinate resin layer. Acting as a protective layer, or a concealing layer to be concealed, and one of the transparent or translucent polybutylene succinate resin layers is directly or indirectly provided on the printed pattern layer, etc. As a result, the printed images such as characters, figures, symbols, designs, etc. that make up the printed pattern layer can be made clearer and beautiful printed patterns can be reproduced or manifested. In addition, the other transparent or translucent polybutylene succinate resin layer also functions as a heat-seal resin layer that forms a seal part or the like during bag making. In which advantages can be attained that.

Next, in the present invention, the film thickness of the multilayer laminated film according to the present invention is desirably about 15 μm to 180 μm, preferably about 30 μm to 150 μm.
Thus, in the multilayer laminated film according to the present invention, as the film thickness of each layer constituting the multilayer laminated film, first, as the light-shielding polybutylene succinate resin layer, the film thickness is 3 μm to 30 μm, preferably As a white polybutylene succinate resin layer having a thickness of about 5 μm to 20 μm, a film thickness of 5 μm to 30 μm, preferably about 10 μm to 20 μm, a transparent to translucent polybutylene succinate resin layer is a film. The thickness is preferably 5 μm to 100 μm, preferably 10 μm to 80 μm.
In the above, as the film thickness of each layer constituting the coextruded multilayer laminated resin film according to the present invention, first, the film thickness of the light-shielding polybutylene succinate resin layer is less than 3 μm. It is not preferable because the function as a light blocking layer or the like is deteriorated and there is a possibility that it may be greatly influenced by thickness unevenness. Although the barrier property and the like are improved, it is not preferable because it is difficult to set and select a white polybutylene succinate resin layer for concealing it.
Next, when the film thickness of the white polybutylene succinate resin layer is less than 5 μm, it becomes difficult to conceal the light-shielding polybutylene succinate resin layer, and the appearance is aesthetic. Etc., and when a printed pattern layer or the like is provided on the white polybutylene succinate resin layer, the tone or color tone of the printed pattern layer or the like is affected. Although it is not preferable because the function as a tosyl resin layer or the like is lowered, and when the film thickness exceeds 30 μm, the shielding property of the light-blocking polybutylene succinate resin layer is increased, but the whole This is not preferable because the thickness of the container becomes large and the influence on the environment as packaging waste or the like may increase.
Furthermore, when the film thickness of the transparent or translucent polybutylene succinate resin layer is less than 5 μm, it is difficult to perform functions such as protection and concealment, and the appearance and aesthetics are also improved. This is not preferable because the properties as a heat-sealable resin layer and the like are also deteriorated, and when the thickness exceeds 100 μm, the entire layer thickness increases and is discarded. However, it is not preferable because it is not preferable for environmental measures.

In addition, in this invention, in order to improve the close adhesiveness etc. between each layer which comprises the multilayer laminated film which concerns on this invention, it can laminate | stack with an adhesive resin layer etc. interposed. That is, the above-mentioned adhesive resin layer has, for example, inferior affinity, adhesion, etc. between the respective layers, and both of them may cause delamination or the like without being tightly adhered to each other. It is located between the two layers, and has an effect as an extremely excellent adhesive layer that can be laminated with both of them firmly and tightly bonded to each other.
Thus, the above-mentioned adhesive resin layer can be composed of an adhesive resin layer made of a resin composition containing one or more adhesive polyolefin resins as a main component of the vehicle.
As the above-mentioned adhesive polyolefin-based resin, a polyolefin-based resin that can be melted by heat and extruded from a T-die, specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear (wire ) Low-density polyethylene, ethylene-α / olefin copolymer polymerized using metallocene catalyst, polypropylene, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-ethyl acrylate copolymer, ethylene-acrylic acid copolymer Polyolefin resins such as polymers, ethylene-methacrylic acid copolymers, ethylene-propylene copolymers, methylpentene polymers, polyethylene, polypropylene, etc., such as acrylic acid, methacrylic acid, maleic anhydride, fumaric acid, etc. Acid-modified polyolefin resin modified with unsaturated carboxylic acid Other such heat - tosylate - to one free polyolefin resin having Le property can be used two or more kinds.

As is clear from the above description, the multilayer laminated film according to the present invention acts as a light-shielding material as well as a heat-sealable resin layer, is excellent in light-shielding properties, is aluminum-free, and In addition, it has excellent laminating strength, heat sealability strength, etc., and further has strength etc., and excellent fastness such as weather resistance, heat resistance, water resistance, etc. It also has excellent light blocking properties, for example, blocking sunlight or fluorescent light from the sun or fluorescent lamps, etc., preventing the contents from being decomposed or altered, or causing light deterioration such as discoloration, etc. In addition, it has suitability for filling and storage of contents, storage suitability, etc., and in particular, it has extremely excellent usefulness as a packaging material for photosensitive materials as industrial members that require complete light shielding, and impairs the packaging appearance. Excellent cosmetics, and more When it is incinerated and discarded after use, it does not decompose in the natural environment and does not generate harmful substances, etc., so it is extremely suitable for disposal and environmental suitability, and it can detect metal fragments (foreign matter) using a metal detector. It has the advantage of being easy.
Thus, the multilayer laminated film according to the present invention uses this as a light-shielding or light-shielding material or a heat-sealable resin layer, etc. 1 or 2 or more kinds of various base films such as a material, a barrier base material that prevents permeation of oxygen gas or water vapor, cellophane, woven or non-woven fabric, glass plate, etc. The laminated material according to the present invention having the following forms is manufactured, and thus the laminated material is made into a bag and applied to packaging materials constituting packaging bags having various forms, etc. To get.

  Next, in the present invention, the laminated material according to the present invention as a packaging material using the multilayer laminated film according to the present invention will be described in more detail. First, as a method for producing the laminated material, for example, Dry laminate lamination method for arbitrarily laminating a desired base material such as a plastic film through a primer agent layer or a laminating adhesive layer, or a primer agent layer or an anchor coating agent Manufacturing laminated materials in various forms using an extrusion laminating method in which various resins are melt-extruded through layers and the like, and a desired base material is arbitrarily laminated, and other laminating methods Can do.

Thus, in the present invention, the base film constituting the laminated material according to the present invention will be described. As such a base film, this is the basic or auxiliary material that constitutes the packaging bag according to the present invention. Therefore, it has excellent properties in mechanical, physical, chemical, etc., excellent in strength, toughness, etc., and further, heat resistance, moisture resistance, pinhole resistance, puncture resistance, A resin film or sheet excellent in transparency, etc. can be used.
Specifically, for example, polyester resin, polyamide resin, polyaramid resin, polyethylene resin, polypropylene resin, polycarbonate resin, polyacetal resin, fluorine resin, biodegradable resin, Various other resin films or sheets can be used.
Thus, as the resin film or sheet, any of an unstretched film or a stretched film stretched in a uniaxial direction or a biaxial direction can be used. In the present invention, the thickness of the resin film or sheet may be a thickness that can be kept to the minimum necessary for strength, puncture resistance, rigidity, and the like. On the other hand, if it is too thin, the strength, puncture resistance, rigidity, etc. are lowered, which is not preferable.
In the present invention, for the reasons described above, about 10 μm to 100 μm, preferably about 12 μm to 50 μm is most desirable.
Thus, in the present invention, among the above-described resin films or sheets, in particular, a biaxially stretched polyester resin having a thickness of about 9 to 30 μm, a biaxially stretched polyamide resin, or a biaxial It is preferable to use a stretched polypropylene resin film, a biaxially stretched biodegradable resin film, or the like.

Furthermore, in the present invention, as the base film to be laminated with the multilayer laminated film according to the present invention, in addition to the base film as described above, for example, it has moldability, bending resistance, rigidity, etc. For example, a paper substrate such as a highly sized bleached or unbleached paper substrate, or a pure white roll paper, kraft paper, paperboard, processed paper, or the like can be laminated.
In the above, as the paper substrate constituting the paper layer, it is desirable to use a material having a basis weight of about 80 to 600 g / m ² , preferably a basis weight of about 100 to 450 g / m ² .
Of course, in the present invention, the paper base material constituting the paper layer and various resin films or sheets as the base film mentioned above can be used in combination.

Next, in the present invention, as the other base film laminated with the multilayer laminated film according to the present invention, for example, the property of shielding light such as sunlight, or gas such as water vapor, water, oxygen, etc. It is possible to use a barrier substrate having the property of not transmitting the like, etc., and this may be a single substrate or a composite substrate formed by combining two or more substrates. Good.
Specific examples of the above-mentioned barrier base material include, for example, a resin film having a vapor-deposited film of an inorganic oxide such as silicon oxide and aluminum oxide having a barrier property, and a barrier property such as water vapor and water. Low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, film or sheet of resin such as ethylene-propylene copolymer, polyvinyl alcohol having gas barrier properties, ethylene-acetic acid Resin film or sheet such as vinyl copolymer saponified product, nylon MXD6, etc. Various colorant such as pigment added to resin, kneaded by adding desired additives, and various light-shielding properties A colored resin film or sheet may be used.
These materials can be used alone or in combination. The thickness of the film or sheet is arbitrary, but is usually about 5 μm to 300 μm, more preferably about 10 μm to 100 μm.

Further, in the above, a deposited film of inorganic oxide having a thickness of about 100 to 2000 mm can be used.
Examples of the resin film that supports the vapor-deposited film include a polyester film, a polyamide film, a polyolefin film, a polyvinyl chloride film, a polycarbonate film, a polyvinylidene chloride film, a polyvinyl alcohol film, and ethylene-acetic acid. A vinyl copolymer saponified film, etc. can be used.

In the above, as the inorganic oxide constituting the vapor-deposited film layer of the inorganic oxide, for example, silicon oxide (SiO _x ), aluminum oxide, indium oxide, tin oxide, zirconium oxide or the like may be used. it can.
Furthermore, in the present invention, the inorganic oxide may be a mixture of silicon monoxide and silicon dioxide, or a mixture of silicon oxide and aluminum oxide.
Thus, in the present invention, the inorganic oxide thin film layer is formed by forming a deposited film by a vacuum deposition method such as an ion beam method or an electron beam method, a sputtering method, or the like. be able to.
In the above, the thickness of the thin film layer of the inorganic oxide is usually preferably about 100 to 2000 mm in order to obtain a sufficient barrier property, and particularly preferably about 200 to 1500 mm in the present invention. .
In the above, when the thickness of the inorganic oxide thin film layer exceeds 1500 mm, particularly when it exceeds 2000 mm, the inorganic oxide thin film layer is liable to crack and the like, thereby reducing the barrier property. It is not preferable because it has the problem that the material cost is high, and it is not preferable, and if it is less than 100 mm, particularly less than 200 mm, it is difficult to recognize the effect, which is not preferable.

Next, in the present invention, as the other base film laminated on the multilayer laminated film according to the present invention, there is little adsorption of a fragrance component and the like contained in the contents to be packed and packed, and the aroma retention is further enhanced. A resin film or sheet having a property that does not cause a taste change or a strange odor can be used.
Specifically, for example, polyacrylic resin, polymethacrylic resin, polyacrylonitrile resin, polymethacrylonitrile resin, polystyrene resin, polycarbonate resin, polyethylene terephthalate resin or the like Resin obtained by copolymerizing or modifying a part of ethylene component and / or terephthalate component with other di- or higher polyhydric alcohol component or dicarboxylic acid component, or polyester such as polyethylene naphthalate resin Use films or sheets of resins such as resins, polyamide resins, saponified ethylene-vinyl acetate copolymers, polyvinyl alcohol resins, polyvinyl chloride resins, polyvinylidene chloride resins, etc. Can do.
Therefore, in the present invention, among the above-described resin films or sheets, it is desirable to use a resin film or sheet having a fragrance retaining property and a barrier property against oxygen gas or water vapor. Specifically, for example, a saponified ethylene-vinyl acetate copolymer, a polyamide-based resin, a polyacrylonitrile-based resin, a polyester-based resin, or the like is used as a resin film or a film having excellent aroma retention and barrier properties. -It is desirable to use

Furthermore, in the present invention, since the packaging container is usually subjected to severe physical and chemical conditions, the packaging material constituting the packaging container is required to have severe packaging suitability, Various conditions such as anti-deformation strength, drop impact strength, pinhole resistance, heat resistance, sealing performance, quality maintenance, workability, hygiene, and the like are required. A material that satisfies the various conditions as described above can be arbitrarily selected and used.
Specifically, for example, low density polyethylene, medium density polyethylene, high density polyethylene, linear low density polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, ionomer resin, ethylene-acrylic acid Ethyl copolymer, ethylene-acrylic acid or methacrylic acid copolymer, methylpentene polymer, polybutene resin, polyvinyl chloride resin, polyvinyl acetate resin, polyvinylidene chloride resin, vinyl chloride-vinylidene chloride copolymer Polymer, poly (meth) acrylic resin, polyacrylonitrile resin, polystyrene resin, acrylonitrile-styrene copolymer (AS resin), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyester resin, Polyamide resin, polycarbonate Known resins such as neat resins, polyvinyl alcohol resins, saponified ethylene-vinyl acetate copolymers, fluorine resins, diene resins, polyacetal resins, polyurethane resins, nitrocellulose, etc. Any resin film or sheet can be selected and used.
In addition, for example, a film such as cellophane, synthetic paper, and the like can be used.
In the present invention, the above-described film or sheet may be any of unstretched, uniaxially or biaxially stretched.
The thickness is arbitrary, but can be selected from a range of several μm to 300 μm.
Further, in the present invention, the film or sheet may be a film having any property such as extrusion film formation, inflation film formation, and coating film.

In the present invention, in the laminated material according to the present invention, an arbitrary printed pattern layer can be provided on the front surface, the back surface, or both surfaces of any material constituting the laminated material.
Thus, in the present invention, as the printed pattern layer, for example, on the substrate film, for example, a desired printed pattern composed of characters, figures, symbols, patterns, etc. is printed, A printed pattern layer can be formed.
Thus, as the above-mentioned printed pattern layer, specifically, first, an ink vehicle composed of one or more kinds of resin or the like is a main component, and if necessary, a plasticizer and a stabilizer. , One or more additives such as antioxidants, light stabilizers, ultraviolet absorbers, curing agents, cross-linking agents, lubricants, antistatic agents, fillers, etc. are optionally added, and further dyes, A colorant such as a pigment is added, and the ink composition is prepared by sufficiently kneading with a solvent, a diluent, etc., and then the ink composition is used, for example, gravure printing, offset printing, letterpress printing, screen printing A desired printing pattern consisting of characters, figures, symbols, patterns, etc. is printed on the base film using a printing method such as printing, transfer printing, flexographic printing, etc. The printed pattern layer can be formed

  In the above, as the vehicle for ink, known ones such as sesame oil, drill oil, soybean oil, hydrocarbon oil, rosin, rosin ester, rosin modified resin, shellac, alkyd resin, phenolic resin, malein Acid resins, natural resins, hydrocarbon resins, polyvinyl chloride resins, polyvinyl acetate resins, polystyrene resins, polyvinyl butyral resins, acrylic or methacrylic resins, polyamide resins, polyester resins, polyurethane resins Use one or more of epoxy resin, urea resin, melamine resin, amino alkyd resin, phenol resin, nitrocellulose, ethyl cellulose, chlorinated rubber, cyclized rubber, etc. Can do.

Next, in the present invention, the laminating adhesive layer constituting the laminated material according to the present invention will be described. As the laminating adhesive layer constituting the laminating adhesive layer, for example, poly A vinyl acetate adhesive, a homopolymer such as ethyl acrylate, butyl, 2-ethylhexyl ester, or a polyacrylate adhesive composed of a copolymer of these with methyl methacrylate, acrylonitrile, styrene, etc., Cyanoacrylate adhesives, ethylene copolymer adhesives consisting of copolymers of ethylene and vinyl acetate, ethyl acrylate, acrylic acid, methacrylic acid, etc., cellulose adhesives, polyester adhesives Agent, polyamide adhesive, polyimide adhesive, amino resin adhesive made of urea resin or melamine resin, etc. Phenolic resin adhesives, epoxy adhesives, polyurethane adhesives, reactive (meth) acrylic adhesives, rubber adhesives such as chloroprene rubber, nitrile rubber, styrene-butadiene rubber, silicone-based adhesives Adhesives such as adhesives, alkali metal silicates, inorganic adhesives made of low-melting glass, and the like can be used.
The composition system of the above-mentioned adhesive may be any composition form such as an aqueous type, a solution type, an emulsion type, and a dispersion type, and the properties thereof are film / sheet type, powder type, solid type, etc. Any form may be used, and the bonding mechanism may be any form such as a chemical reaction type, a solvent volatilization type, a heat melting type, and a hot pressure type.
Thus, the above adhesive can be applied by, for example, a roll coating method, a gravure roll coating method, a kiss coating method, a coating method or the like, or a printing method. The coating amount is preferably about 0.1 to 10 g / m ² (dry state).

Next, in the present invention, the anchor coat agent layer constituting the laminated material according to the present invention will be described. As the anchor coat agent constituting such an anchor coat agent layer, for example, alkyl titane is used. Various water-based or oil-based anchor coating agents such as organic titanium-based, isocyanate-based, polyethyleneimine-based, polyptadiene-based, etc. can be used.
The above-mentioned anchor coating agent can be coated using a coating method such as a roll coat, a gravure roll coat, a kiss coat, and the like. The amount is preferably 0.1 to 5 g / m ² (dry state).

Examples of the melt-extruded resin layer in the above extrusion lamination method include, for example, polyethylene resins, polypropylene resins, acid-modified polyethylene resins, acid-modified polypropylene resins, ethylene-acrylic acid or methacrylic acid copolymers. , Thermoplastic resins such as sarin resin, ethylene-vinyl acetate copolymer, polyvinyl acetate resin, ethylene-acrylic acid ester or methacrylic acid ester copolymer, polystyrene resin, polyvinyl chloride resin, etc. 1 type (s) or 2 or more types can be used.
In the above extrusion laminating method, in order to obtain stronger adhesive strength, for example, lamination can be performed through an anchor coating agent layer such as the above-described anchor coating agent. .

In the present invention, examples of the primer layer include a polyurethane resin, a polyester resin, a polyamide resin, an epoxy resin, a phenol resin, a (meth) acrylic resin, and a polyvinyl acetate resin. A primer layer can be formed using a resin composition having a main component of a vehicle such as a polyolefin resin such as polyethylene or polypropylene, or a copolymer or modified resin thereof, a cellulose resin, or the like. .
In the present invention, for example, a primer coating layer is formed by coating using a coating method such as a roll coat, a gravure roll coat, a kiss coat, or the like. Therefore, the coating amount is preferably about 0.1 to 10 g / m ² (dry state).
Moreover, in this invention, when performing said lamination | stacking, if necessary, pre-treatments, such as a corona treatment and an ozone treatment, can be given to a film.

Thus, in the present invention, a method for making a light-shielding packaging bag according to the present invention using the laminate material according to the present invention as described above will be described. The material of the multilayer laminated film according to the present invention as an inner heat-seal resin layer is opposed to each other and folded, or the two sheets are overlapped, and the periphery The end portion is heat sealed to provide a seal portion, and the light-shielding packaging bag according to the present invention having various forms can be made.
Thus, as a bag-making method, the above-mentioned laminated material is folded with the inner layer faces facing each other, or the two sheets are overlapped, and the peripheral edge of the outer periphery is, for example, a side sheet. Seal type, two-sided seal type, three-sided seal type, four-sided seal type, envelope-sealed seal type, jointed seal type (pillar seal type), pleated seal type Heat-shielding in the form of a heat seal such as a flat bottom seal type, a square bottom seal type, or the like, to manufacture various types of light-shielding packaging bags according to the present invention. it can.
In addition, for example, a self-supporting packaging bag (standing pouch) or the like can be manufactured, and in the present invention, a tube container or the like can also be manufactured using the above-described laminated material.
In the above, as the heat seal method, for example, a bar seal, a rotary roll seal, a belt seal, an impulse seal, a high frequency seal, an ultrasonic seal and the like are known. It can be done by the method.
In the present invention, a spout such as a one-piece type, a two-piece type, or the like, or a zipper for opening and closing can be arbitrarily attached to the packaging bag as described above.

  Next, in the case of a liquid-filled paper container including a paper base material as a packaging container, first, a laminated material obtained by laminating a paper base material is produced as a laminated material, and a blank for producing a desired paper container therefrom. Manufacturing a plate, and then boxing the body, bottom, head, etc. using the blank plate, for example, manufacturing a brick-type, flat-type or gable-top type liquid paper container, etc. Can do.

In the present invention, the light-shielding packaging bag produced as described above includes, for example, food and drink, fruit juice, juice, drinking water, liquor, cooked food, marine product, frozen food, meat product, boiled food, rice cake, It consists of various foods and drinks such as liquid soup, seasonings, etc., chemicals such as adhesives, adhesives, liquid detergents, cosmetics, pharmaceuticals, miscellaneous goods such as chemical warmers, photosensitive materials, and other articles. The contents can be filled and packaged.
Thus, in the present invention, in particular, for example, a self-supporting bag for filling and packaging soy sauce, sauce, and soup, a self-supporting bag for filling and packaging fresh confectionery, and a packaging bag for filling and packaging frozen food Alternatively, it is useful as a self-supporting bag for filling and packaging liquid food and drink such as a self-supporting bag filled and packaged with boiled or retort food, etc.
In the present invention, for example, from the opening of the self-supporting bag manufactured as described above, for example, food and drink and other contents are filled, and then the upper opening is heat sealed and the upper sheet is placed. -Forming a lug part etc., Furthermore, a boil process, a retort process, etc. are given as needed, and the packaged product which consists of various forms can be manufactured.
Further, in the present invention, it is particularly useful as a self-supporting bag for filling and packaging articles such as photosensitive materials as industrial materials, for example, films, photosensitive agents, and the like.

Thus, in the present invention, in the packaged product manufactured as described above, the multilayer laminated film according to the present invention is particularly excellent in light-shielding property or light-shielding property, for example, sunlight or fluorescence by the sun or a fluorescent lamp, etc. For example, food and drink containing fats and oils as the contents, for example, can prevent the contents from being decomposed or altered or prevented from causing light deterioration such as discoloration or the like. In the case of a product or the like, it has an advantage that oxidation of oil and fat components and the like due to transmission of sunlight or fluorescence can be prevented.
In particular, frozen foods and drinks are usually handled by supermarkets and other mass retailers. In this case, they are sold on display shelves that receive a lot of fluorescence from fluorescent lamps. It's real.
Thus, in frozen foods and beverages sold under the above environment, the fat and oil components are greatly affected by light having a wavelength of 500 nm or less, and have a maximum absorption of visible light in the yellow band around 550 nm. Therefore, the oxidation reaction is accelerated by the influence of the fluorescent light or the like by a fluorescent lamp or the like, and the content may be decomposed or altered.

However, as described above, the multilayer laminated film according to the present invention is particularly excellent in light-shielding property or light-shielding property, for example, blocking the transmission of sunlight or fluorescence by the sun or a fluorescent lamp, and the contents are decomposed. From the laminated material according to the present invention, which is manufactured using the multilayer laminated film according to the present invention, it is possible to prevent the deterioration or the deterioration of the light or the like from causing light deterioration such as others. In the frozen food and drink using the packaging bag according to the present invention, it is handled at a mass retailer such as a supermarket, and is placed on a display shelf that receives a lot of fluorescent light etc. Even if it is affected by fluorescence or the like, the oxidation reaction can be prevented from being promoted and the contents can be prevented from being decomposed or altered.
In the present invention, since the packaged product manufactured above does not use an aluminum foil or an aluminum deposited film, a metal (foreign matter) detector is used, and a metal (foreign matter) is detected by a metal (foreign matter) detector. It has the advantage that detection is also possible.

Further, in the present invention, the packaged product manufactured as described above is such that the multilayer laminated film according to the present invention is particularly excellent in light-shielding property or light-shielding property, for example, transmission of sunlight or fluorescence by the sun or a fluorescent lamp. For example, as a content, a photosensitive material as an industrial material can be prevented from being decomposed or altered or prevented from causing photodegradation such as discoloration or the like. It is useful as a packaging material for filling and packaging.
In addition, the multilayer laminated film according to the present invention uses a polybutylene succinate resin, and the multilayer laminated film is composed mainly of the polybutylene succinate resin. It has the advantage of decomposing with.
Next, the present invention will be described more specifically with reference to examples.

(1). First, the following resin compositions (a), (b), (c) and (d) were prepared. (I). Resin composition constituting the first layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. A resin composition was prepared by sufficiently kneading 100.0 parts by weight of 5 g / 10 minutes, melting point 110 ° C., 0.5 parts by weight of synthetic silica, and 0.05 parts by weight of erucamide.
(B). Resin composition constituting the second layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. A resin composition was prepared by sufficiently kneading 80.0 parts by weight of 5 g / 10 minutes, melting point 110 ° C.) and 20.0 parts by weight of titanium oxide as a white pigment.
(C). Resin composition constituting third layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 5 g / 10 minutes, melting point 110 ° C.) 73.5 parts by weight, carbon black 1.5 parts by weight as a black pigment, and titanium oxide 25.0 parts by weight as a white pigment are sufficiently kneaded to obtain a resin. A composition was prepared.
(D). Resin composition constituting the fourth layer The resin composition prepared in (a) above was used in the same manner.
(2). Next, using each of the resin compositions prepared above, using a three-kind four-layer top-blown air-cooled inflation coextrusion film forming machine, the layer of the resin composition of (A) is 5 μm, (B) The layer made of the resin composition is 20 μm, (c) the layer made of the resin composition is 8 μm, and the layer made of the resin composition (d) is co-extruded to 17 μm. A multilayer laminated film according to the present invention consisting of a 50 μm coextruded inflation film was produced.
When the multilayer laminated film produced above was visually recognized from the first layer side, it was milky white and excellent in aesthetics.
Furthermore, in the multilayer laminated film produced above, the light-shielding properties were sufficient, and each wavelength resulting from the oxidation of fats and oils was hardly transmitted, which was very good.
(3). The surface of the first layer of the multilayer laminated film according to the present invention produced in the above (2) is subjected to corona treatment, and then, on the surface of the corona treatment, a two-component curable urethane adhesive (main agent: polyester polyol) And curing agent: aliphatic socyanate), and this is coated to a thickness of 4.0 g / m ² (in a dry state) using a gravure roll coating method, and an adhesive for laminating Next, a 20 μm-thick polylactic acid stretched film (trade name, stretched PLA film, Peel Green LC, manufactured by Tosero Co., Ltd.) was printed on the entire surface of the laminating adhesive layer. , One piece treatment) was bonded together to produce a laminated material according to the present invention.
(4). Next, using the laminated material produced above, a packaging material consisting of 320 mm × 240 mm was cut out, and a 150 mm × 240 mm light-shielding packaging bag according to the present invention was prepared as a pillow packaging bag.
In the light-shielding packaging bag produced above, from the opening, the confectionery containing green seaweed is filled and packaged, and then the opening is heat sealed to form the upper seal part, A packaged product according to the present invention using the light-shielding packaging bag according to the present invention was produced.
The packaged product produced above was subjected to an irradiation test for 3 months from 1000 lx light, and no discoloration of the product contents due to light was observed.
In addition, the packaged product manufactured above can be subjected to foreign matter inspection using a metal detector.

(1). First, the following resin compositions (a), (b), (c), (d) and (e) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. A resin composition was prepared by sufficiently kneading 100.0 parts by weight of 5 g / 10 minutes, melting point 110 ° C., 0.5 parts by weight of synthetic silica, and 0.05 parts by weight of erucamide.
(B). Resin composition constituting the second layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. A resin composition was prepared by sufficiently kneading 80.0 parts by weight of 5 g / 10 minutes, melting point 110 ° C.) and 20.0 parts by weight of titanium oxide as a white pigment.
(C). Resin composition constituting the third layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 73.5 parts by weight of 5 g / 10 minutes, melting point 110 ° C.), 1.5 parts by weight of carbon black as a black pigment, and 25.0 parts by weight of titanium oxide as a white pigment were sufficiently kneaded, A resin composition was prepared.
(D). Resin composition constituting the fourth layer The resin composition prepared in (b) above was similarly used.
(E). Resin composition constituting the fifth layer The resin composition prepared in (a) above was similarly used.
(2). Next, using each of the resin compositions prepared above, using a three-type five-layer top-blown air-cooled inflation co-extrusion film forming machine, the layer of the resin composition of (A) is 5 μm, The layer of (b) resin composition is 20 μm, the layer of (c) resin composition is 8 μm, the layer of (d) resin composition is 7 μm, and the layer of (e) resin composition is 10 μm. A multilayer laminated film according to the present invention consisting of five layers of coextruded inflation film having a total thickness of 50 μm was produced by extrusion.
When the multilayer laminated film produced above was visually recognized from the first layer side, it was milky white and excellent in aesthetics.
Furthermore, in the multilayer laminated film produced above, the light-shielding properties were sufficient, and each wavelength resulting from the oxidation of fats and oils was hardly transmitted, which was very good.
(3). The surface of the first layer of the multilayer laminated film according to the present invention produced in the above (2) is subjected to corona treatment, and then, on the surface of the corona treatment, a two-component curable urethane adhesive (main agent: polyester polyol) And curing agent: aliphatic socyanate), and this is coated to a thickness of 4.0 g / m ² (in a dry state) using a gravure roll coating method, and an adhesive for laminating Next, a 20 μm-thick polylactic acid stretched film (trade name, stretched PLA film, Peel Green LC, manufactured by Tosero Co., Ltd.) was printed on the entire surface of the laminating adhesive layer. , One piece treatment) was bonded together to produce a laminated material according to the present invention.
(4). Next, using the laminated material produced above, a packaging material consisting of 320 mm × 240 mm was cut out, and a 150 mm × 240 mm light-shielding packaging bag according to the present invention was prepared as a pillow packaging bag.
In the light-shielding packaging bag produced above, from the opening, the confectionery containing green seaweed is filled and packaged, and then the opening is heat sealed to form the upper seal part, A packaged product according to the present invention using the light-shielding packaging bag according to the present invention was produced.
The packaged product produced above was subjected to an irradiation test for 3 months from 1000 lx light, and no discoloration of the product contents due to light was observed.
In addition, the packaged product manufactured above can be subjected to foreign matter inspection using a metal detector.

(1). First, the following resin compositions (a), (b), (c), (d) and (e) were prepared.
(I). Resin composition constituting the first layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AD92W: density = 1.24 g / cm ³ , melt flow rate (MFR) = 4. A resin composition was prepared by sufficiently kneading 100.0 parts by weight (5 g / 10 minutes, melting point 88 ° C.), 0.5 parts by weight of synthetic silica, and 0.05 parts by weight of erucamide.
(B). Resin composition constituting the second layer Polybutylene succinate (PBS) (Mitsubishi Chemical Co., Ltd., trade name, GS Pla AD92W: density = 1.24 g / cm ³ , melt flow rate (MFR) = 4. A resin composition was prepared by sufficiently kneading 80.0 parts by weight of 5 g / 10 minutes, melting point 88 ° C.) and 20.0 parts by weight of titanium oxide as a white pigment.
(C). Resin composition constituting the third layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AD92W: density = 1.24 g / cm ³ , melt flow rate (MFR) = 4. 73.5 parts by weight of 5 g / 10 minutes, melting point 88 ° C.), 1.5 parts by weight of carbon black as a black pigment, and 25.0 parts by weight of titanium oxide as a white pigment were sufficiently kneaded, A resin composition was prepared.
(D). Resin composition constituting the fourth layer The resin composition prepared in (b) above was similarly used.
(E). Resin composition constituting the fifth layer The resin composition prepared in (a) above was similarly used.
(2). Next, using each of the resin compositions prepared above, using a three-type five-layer top-blown air-cooled inflation coextrusion film-forming machine, the layer of the resin composition (a) is 10 μm, The layer of (b) resin composition is 20 μm, the layer of (c) resin composition is 10 μm, the layer of (d) resin composition is 10 μm, and the layer of (e) resin composition is 20 μm. A multilayer laminated film according to the present invention consisting of five layers of a co-extruded inflation film having a total thickness of 70 μm was produced by extrusion.
When the multilayer laminated film produced above was visually recognized from the first layer side, it was milky white and excellent in aesthetics.
Furthermore, in the multilayer laminated film produced above, the light-shielding properties were sufficient, and each wavelength resulting from the oxidation of fats and oils was hardly transmitted, which was very good.
(3). Using the multilayer laminated film according to the present invention produced in the above (2), the surface of the first layer is subjected to corona discharge treatment, and then the two-component curable urethane adhesive (main agent) is applied to the corona-treated surface. : Polyester polyol, Curing agent: Aliphatic socyanate), and coating this with a gravure roll coat method to a thickness of 4.0 g / m ² (dry), and laminating adhesion After forming an agent layer, a 15 μm-thick biaxially stretched nylon 6 film (trade name, manufactured by Dai Nippon Printing Co., Ltd.) having a 200 nm thick silicon oxide vapor-deposited film on the surface of the adhesive layer for laminating. Silica vapor-deposited nylon [IB-0N-FRC] double-sided treatment) was laminated with the corona-treated surfaces facing each other, and then both were laminated by dry lamination.
Next, on the surface of the biaxially stretched nylon 6 film laminated as described above, a laminating adhesive layer is formed on the corona-treated surface in the same manner as described above, and then the above laminating adhesion is performed. A 20 μm-thick polylactic acid stretched film (trade name, stretched PLA film, Peel Green LC, one-side treatment) made by white gravure printing on the entire surface by a gravure printing method is bonded to the agent layer surface, A laminate according to the present invention was produced.
(4). Subsequently, the laminated material manufactured above was used, and then a 90 mm × 230 mm light-shielding gusset-type packaging bag according to the present invention was prepared.
In the light-shielding gusset-type packaging bag produced above, the tea leaves are filled and packaged from the opening, and then the opening is heat sealed to form an upper seal portion. A packaged product according to the present invention using the light-shielding caseette-type packaging bag according to the invention was produced.
The packaged product produced above was subjected to an irradiation test for 3 months from 1000 lx light, and no discoloration of the product contents due to light was observed.
In addition, the packaged product manufactured above can be subjected to foreign matter inspection using a metal detector.

(1). First, the following resin compositions (a), (b), (c) and (d) were prepared. (I). Resin composition constituting the first layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 90.0 parts by weight of 5 g / 10 min, melting point 110 ° C., polylactic acid resin (PLA) (Mitsui Chemicals, trade name, LACEA H-400: density = 1.26 g / cm ³ , melt flow rate ( MFR) = 2.7 g / 10 min, melting point 166 ° C.) 10.0 parts by weight, synthetic silica 0.5 parts by weight, and erucic acid amide 0.05 parts by weight are sufficiently kneaded to prepare a resin composition. did.
(B). Resin composition constituting the second layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 72.0 parts by weight of 5 g / 10 min, melting point 110 ° C., polylactic acid resin (PLA) (Mitsui Chemicals, trade name, LACEA H-400: density = 1.26 g / cm ³ , melt flow rate ( MFR) = 2.7 g / 10 min, melting point 166 ° C.) 8.0 parts by weight and 20.0 parts by weight of titanium oxide as a white pigment were sufficiently kneaded to prepare a resin composition.
(C). Resin composition constituting third layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 66.2 parts by weight of 5 g / 10 minutes, melting point 110 ° C., polylactic acid resin (PLA) (Mitsui Chemicals, trade name, LACEA H-400: density = 1.26 g / cm ³ , melt flow rate ( MFR) = 2.7 g / 10 min, melting point 166 ° C.) 7.3 parts by weight, carbon black as a black pigment 1.5 parts by weight, and titanium oxide 25.0 parts by weight as a white pigment The resin composition was prepared by kneading.
(D). Resin composition constituting the fourth layer The resin composition prepared in (a) above was used in the same manner.
(2). Next, using each resin composition prepared above, using a three-kind four-layer top-blown air-cooled inflation coextrusion film-forming machine, the layer of the resin composition of (A) is 30 μm, (B) The layer made of the resin composition is 20 μm, (c) the layer made of the resin composition is 10 μm, and the layer made of the resin composition (d) is co-extruded to 60 μm to form a total thickness of 4 layers. A multilayer laminated film according to the present invention consisting of a 120 μm coextruded inflation film was produced.
When the multilayer laminated film produced above was visually recognized from the first layer side, it was milky white and excellent in aesthetics.
Furthermore, in the multilayer laminated film produced above, the light-shielding properties were sufficient, and each wavelength resulting from the oxidation of fats and oils was hardly transmitted, which was very good.
(3). Using the multilayer laminated film according to the present invention produced in the above (2), the surface of the first layer is subjected to corona discharge treatment, and then the two-component curable urethane adhesive (main agent) is applied to the corona-treated surface. : Polyester polyol, Curing agent: Aliphatic socyanate), and coating this with a gravure roll coat method to a thickness of 4.0 g / m ² (dry), and laminating adhesion An agent layer is formed, and then a 15 μm thick biaxially stretched nylon 6 film (trade name, biaxially stretched nylon film Harden N-1102) is formed on the surface of the laminating adhesive layer. The corona-treated surfaces were opposed to each other and then laminated, and then both were laminated by dry lamination.
Next, the surface of the biaxially stretched nylon 6 film laminated as described above is subjected to a corona discharge treatment, and then a laminating adhesive layer is formed on the corona treatment surface in the same manner as described above. In addition, a 20 μm thick polylactic acid stretched film (trade name, stretched PLA film, Peel Green LC, manufactured by Tosero Co., Ltd.), which has been subjected to white printing on the entire surface of the adhesive layer for laminating by the gravure printing method. A laminated material according to the present invention was manufactured by laminating a single piece).
(4). Subsequently, the laminated material manufactured above was used, and then a light-shielding self-supporting packaging bag of 100 mm × 150 mm according to the present invention was prepared.
In the light-shielding self-supporting packaging bag manufactured as described above, water is filled and packaged from the opening, and then the opening is heat sealed to form an upper seal. A packaged product according to the present invention was manufactured using the light-shielding self-supporting packaging bag according to the invention.
The packaged product produced above was subjected to an irradiation test for 3 months from 1000 lx light, and no discoloration of the product contents due to light was observed.
In addition, the packaged product manufactured above can be subjected to foreign matter inspection using a metal detector. Moreover, in the packaged product manufactured above, no leakage, overturning, buckling, etc. are observed, and when the drop test from 1.2 m is performed three times, bag breakage, leakage, etc. are completely recognized. There wasn't.

(1). First, the following resin compositions (a), (b), (c) and (d) were prepared. (I). Resin composition constituting first layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 90.0 parts by weight of 5 g / 10 min, melting point 110 ° C., polyester elastomer (manufactured by Toray DuPont, trade name, High Retort 4057: density = 1.15 g / cm ³ , melting point 163 ° C., flexural elasticity (Ratio = 60 MPa) 10.0 parts by weight, 0.5 parts by weight of synthetic silica, and 0.05 parts by weight of erucamide were sufficiently kneaded to prepare a resin composition.
(B). Resin composition constituting second layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 72.0 parts by weight of 5 g / 10 minutes, melting point 110 ° C., polyester elastomer (manufactured by Toray DuPont, trade name, High Retort 4057: density = 1.15 g / cm ³ , melting point 163 ° C., flexural elasticity (Ratio = 60 MPa) 8.0 parts by weight and 20.0 parts by weight of titanium oxide as a white pigment were sufficiently kneaded to prepare a resin composition.
(C). Resin composition constituting the third layer Polybutylene succinate (PBS) (Mitsubishi Chemical Corporation, trade name, GS Pla AZ91T: density = 1.26 g / cm ³ , melt flow rate (MFR) = 4. 66.2 parts by weight of 5 g / 10 minutes, melting point 110 ° C., polyester elastomer (manufactured by Toray DuPont, trade name, High Retort 4057: density = 1.15 g / cm ³ , melting point 163 ° C., flexural elasticity (Ratio = 60 MPa) 7.3 parts by weight, 1.5 parts by weight of carbon black as a black pigment, and 25.0 parts by weight of titanium oxide as a white pigment were sufficiently kneaded to prepare a resin composition. .
(D). Resin composition constituting the fourth layer The resin composition prepared in (a) above was used in the same manner.
(2). Next, using each resin composition prepared above, using a three-kind four-layer top-blown air-cooled inflation coextrusion film-forming machine, the layer of the resin composition of (A) is 30 μm, (B) The layer made of the resin composition is 20 μm, (c) the layer made of the resin composition is 10 μm, and the layer made of the resin composition (d) is co-extruded to 60 μm to form a total thickness of 4 layers. A multilayer laminated film according to the present invention consisting of a 120 μm coextruded inflation film was produced.
When the multilayer laminated film produced above was visually recognized from the first layer side, it was milky white and excellent in aesthetics.
Furthermore, in the multilayer laminated film produced above, the light-shielding properties were sufficient, and each wavelength resulting from the oxidation of fats and oils was hardly transmitted, which was very good.
(3). Using the multilayer laminated film according to the present invention produced in the above (2), the surface of the first layer is subjected to corona discharge treatment, and then the two-component curable urethane adhesive (main agent) is applied to the corona-treated surface. : Polyester polyol, Curing agent: Aliphatic socyanate), and coating this with a gravure roll coat method to a thickness of 4.0 g / m ² (dry), and laminating adhesion An agent layer is formed, and then a 15 μm thick biaxially stretched nylon 6 film (trade name, biaxially stretched nylon film Harden N-1102) is formed on the surface of the laminating adhesive layer. The corona-treated surfaces were opposed to each other and then laminated, and then both were laminated by dry lamination.
Next, the surface of the biaxially stretched nylon 6 film laminated as described above is subjected to a corona discharge treatment, and then a laminating adhesive layer is formed on the corona treatment surface in the same manner as described above. In addition, a 20 μm thick polylactic acid stretched film (trade name, stretched PLA film, Peel Green LC, manufactured by Tosero Co., Ltd.), which has been subjected to white printing on the entire surface of the adhesive layer for laminating by the gravure printing method. A laminated material according to the present invention was manufactured by laminating a single piece).
(4). Subsequently, the laminated material manufactured above was used, and then a light-shielding self-supporting packaging bag of 100 mm × 150 mm according to the present invention was prepared.
In the light-shielding self-supporting packaging bag manufactured as described above, water is filled and packaged from the opening, and then the opening is heat sealed to form an upper seal. A packaged product according to the present invention was manufactured using the light-shielding self-supporting packaging bag according to the invention.
The packaged product produced above was subjected to an irradiation test for 3 months from 1000 lx light, and no discoloration of the product contents due to light was observed.
In addition, the packaged product manufactured above can be subjected to foreign matter inspection using a metal detector. Moreover, in the packaged product manufactured above, no leakage, overturning, buckling, etc. are observed, and when the drop test from 1.2 m is performed three times, bag breakage, leakage, etc. are completely recognized. There wasn't.

(Experimental example)
About the multilayer laminated film which concerns on said Examples 1-5, (1), film thickness, (2). Total light transmittance, (3). The light shielding property was measured and evaluated.
(1). Measurement of film thickness This was measured from μ-meter manufactured by Sony Corporation.
(2). Measurement of total light transmittance This was evaluated by measuring the transmittance of all light rays using a model name, haze meter (SM-C) manufactured by Suga Test Instruments Co., Ltd.
(3). Measurement of light shielding properties This was evaluated by measuring the light transmittance in the region of 220 [nm] to 800 [nm] using a model name, UV-2400PC, spectrophotometer, manufactured by Shimadzu Corporation.
The measurement results are shown in Table 1 below.

(Table 1)
┌────┬────┬──────┬─────────────────┐ │ │ Film thickness │ Total light transmittance │ Light blocking effect (% ) │ │ ├────┼──────┼─────┬─────┬─────┤ │ │ [μm] │ [%] │500nm │550nm │650nm│ ├────┼────┼──────┼─────┼─────┼─────┤ │Example 1│ 50 │ 0.2 │0.07 │0.14 │0.34 │ ├────┼────┼──────┼─────┼─────┼─────┤ │Example 2│ 50 │ 0.2 │0.07 │0.15 │0.35 │ ├────┼────┼──────┼─────┼─────┼── ───┤ │Example 3│ 70 │ 0.1 │0.04 │0.07 │0.19 │ ├────┼────┼── ────┼─────┼─────┼─────┤ │Example 4│120 │ 0.1 │0.03 │0.06 │0.17 │ ├─── ─┼────┼──────┼─────┼────┼┼─────┤ │Example 5│120 │ 0.1 │0.03 │0.06 │0.17 │ └────┴────┴──────┴─────┴─────┴─────┘

  As is clear from the measurement results shown in Table 1 above, the multilayer laminated film according to the present invention has an appropriate light shielding property or light shielding property while maintaining the appearance, aesthetics, etc. The strength was strong, and it was sufficiently practical.

  The light-shielding packaging bag according to the present invention uses the multilayer laminated film according to the present invention constituting the same as a light-shielding or light-shielding material or a heat-sealable resin layer, etc. One or two types of base films such as plastic films, paper base materials, barrier base materials that block permeation of oxygen gas or water vapor, cellophane, woven or non-woven fabrics, glass plates, etc. By arbitrarily laminating as described above, a laminated material having various forms is manufactured, and thus the laminated material is formed into a bag to constitute a light-shielding packaging bag according to the present invention having various forms. The present invention can be applied to filling and packaging various articles.

It is a schematic sectional drawing which shows the layer structure of the example about the multilayer laminated film which concerns on this invention which forms the laminated material which concerns on this invention which comprises the bag for light-shielding packaging concerning this invention. It is a schematic sectional drawing which shows the layer structure of the example about the multilayer laminated film which concerns on this invention which forms the laminated material which concerns on this invention which comprises the bag for light-shielding packaging concerning this invention. It is a schematic sectional drawing which shows the layer structure of the example about the multilayer laminated film which concerns on this invention which forms the laminated material which concerns on this invention which comprises the bag for light-shielding packaging concerning this invention. It is a schematic sectional drawing which shows the layer structure of the example about the multilayer laminated film which concerns on this invention which forms the laminated material which concerns on this invention which comprises the bag for light-shielding packaging concerning this invention. It is a schematic sectional drawing which shows the layer structure of the example about the multilayer laminated film which concerns on this invention which forms the laminated material which concerns on this invention which comprises the bag for light-shielding packaging concerning this invention. It is a schematic sectional drawing which shows the layer structure of the example about the laminated material which concerns on this invention manufactured using the multilayer laminated film which concerns on this invention shown in said FIG. It is a schematic sectional drawing which shows the layer structure of the example about the laminated material which concerns on this invention manufactured using the multilayer laminated film which concerns on this invention shown in said FIG. FIG. 6 is a schematic diagram showing an example of the structure of a light-shielding packaging bag according to the present invention produced by bag-making the laminated material according to the present invention produced using the multilayer laminated film according to the present invention shown in FIG. It is a perspective view. FIG. 6 is a schematic diagram showing an example of the structure of a light-shielding packaging bag according to the present invention produced by bag-making the laminated material according to the present invention produced using the multilayer laminated film according to the present invention shown in FIG. It is a perspective view.

Explanation of symbols

A Multi-layer laminated film A ₁ Multi-layer laminated film A ₂ Multi-layer laminated film A ₃ Multi-layer laminated film A ₄ Multi-layer laminated film B Laminated material B ₁ Laminated material C Packaging bag D Packaging product 1 Coextrusion multi-layer laminated resin film 2 Light-shielding polybutylene Succinate resin layer 2a Light-shielding polybutylene succinate resin layer 3 White polybutylene succinate resin layer 4 Transparent or translucent polybutylene succinate resin layer 11 Substrate film 12 Print pattern layer 21 Side seal part 22 Bottom seal part 23 Opening part 24 Contents 25 Upper seal part

Claims (16)

A base film and a multilayer laminated film comprising at least one polybutylene succinate as a main component and a light-shielding polybutylene succinate resin layer made of a resin composition containing a black pigment are laminated. A packaging bag comprising a laminated material, further comprising using the laminated material to form a bag. The packaging bag according to claim 1, wherein the laminated material further comprises a structure in which a barrier base material is laminated. The light-shielding polybutylene succinate resin layer contains polybutylene succinate as a main component, further contains a black pigment and a white pigment, and the content of the black pigment is the above-mentioned polybutylene succinate. A light-shielding poly- mer with a resin composition comprising 0.1% by weight to 5.0% by weight of the white pigment and having a white pigment content of 1 to 30 times the black pigment content; The packaging bag according to claim 1, comprising a butylene succinate resin layer. The light-shielding polybutylene succinate resin layer is further laminated on both sides with a transparent or translucent polybutylene succinate resin layer made of a resin composition containing polybutylene succinate as a main component. The packaging bag according to any one of claims 1 to 3, characterized in that: The light-shielding polybutylene succinate resin layer has a polybutylene succinate as a main component on one side or both sides thereof, and further contains a white pigment, and the content of the white pigment is the above-mentioned polybutylene succinate. 5. The white polybutylene succinate resin layer made of a resin composition comprising 5.0% by weight to 30.0% by weight with respect to the cine. A packaging bag according to claim 1. A white polybutylene succinate resin layer is laminated on the other side with a transparent or translucent polybutylene succinate resin layer made of a resin composition containing polybutylene succinate as a main component. The packaging bag according to any one of claims 1 to 5. The packaging bag according to any one of claims 1 to 6, wherein the light-shielding polybutylene succinate resin layer has a thickness of 3 µm to 30 µm. The packaging bag according to any one of claims 1 to 7, wherein the transparent or translucent polybutylene succinate resin layer has a thickness of 5 µm to 100 µm. The packaging bag according to any one of claims 1 to 8, wherein the white polypolybutylene succinate resin layer has a film thickness of 5 to 30 µm. Polybutylene succinate having a density of 1.20 to 1.30 g / cm ³ , melting point, 80 to 120 ° C., melt flow rate (MFR), 1.0 to 30.0 g / 10 min. The packaging bag according to any one of claims 1 to 9, wherein the packaging bag is made of a resin. The polybutylene succinate comprises a polybutylene succinate and a modifier comprising a polylactic acid resin, adipic acid ester or a polyester-based elastomer for modifying the polybutylene succinate. The packaging bag according to any one of claims 1 to 10, which comprises a mixed resin kneaded at a blending ratio of ~ 49 parts by weight. The polylactic acid resin comprises a density, 1.10 to 1.30 g / cm ³ , melting point, 150 ° C. to 170 ° C., melt flow rate (MFR), 1.0 to 20.0 g / 10 minutes, The packaging bag according to claim 11. 12. The packaging bag according to claim 11, wherein the adipic acid ester is a diesterified product of adipic acid and a higher alcohol. The polyester elastomer has a high melting point (T _m ) polyester portion as a hard segment and a low melting point (T _m ) to low glass transition temperature (T _g ) polyester or polyester portion as a soft segment. The packaging bag according to claim 11, comprising a polyester elastomer. The packaging according to any one of claims 1 to 14, wherein the black pigment is composed of one or more black pigments composed of iron black, graphite, or carbon black. Bags. 1 of white pigments in which the white pigment is composed of basic lead carbonate, basic lead sulfate, basic lead silicate, zinc white, zinc sulfide, lithopone, antimony trioxide, anatase-type titanium oxide, or rutile-type titanium oxide. The packaging bag according to any one of claims 1 to 15, wherein the packaging bag comprises seeds or two or more kinds.

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