JP3025004B2 - Laminated film - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial application field> The present invention is a film partially laminated with at least one film of a metal-deposited film, a silver-based film, and a white-based film. The present invention relates to a laminate film suitable for packaging, potted plant packaging, and the like.

<Conventional Technology> Conventionally, metal-deposited films, silver-based films, and white-based films have been used as packaging materials, containers, labels, stickers, and the like because of their excellent surface gloss and decorativeness.

The metal-deposited film is partially applied to the film, and the entire surface of the metal-deposited film is partially dissolved, for example, by dissolving the deposited film with an alkali solution such as potassium hydroxide or sodium hydroxide. How to remove the
Alternatively, it has been produced by a method in which a portion not subjected to metal deposition is coated in advance with a plastic tape, paper tape, or the like, and then vapor-deposited, and then the coated plastic tape, paper tape, or the like is peeled off. However, such a method requires a lot of man-hours, is troublesome, and is very expensive.

Further, a film having a silver portion or a white portion in part is prepared by partially printing a silver-based ink or a white-based ink on an appropriate thermoplastic film by a gravure printing machine or the like. The silver or white printed in the above has poor color tone and tends to cause color unevenness.Furthermore, the film may be contaminated with the printing ink by scattering of the printing ink in portions other than the portion to be printed. However, there were problems such as being unsightly.

<Problems to be Solved by the Invention> In view of these circumstances, the present inventors have attempted to obtain a film in which at least one film of a metal-deposited film, a silver-based film, or a white-based film is partially laminated on a base film. As a result of intensive studies, the present invention has finally been reached.

<Means for Solving the Problems> The present invention provides a metal film partially deposited on a base film,
The present invention relates to a laminated film having a configuration in which at least one film selected from a silver-based film and a white-based film is laminated.

Although the substrate film according to the present invention is not particularly limited, polypropylene, a polyolefin-based polymer such as polyethylene, a polyester-based polymer, a polystyrene-based polymer, a polyvinyl chloride-based polymer, a polycarbonate-based polymer, and a mixture thereof Examples thereof include non-stretched films, biaxially or uniaxially stretched films, and composite films including these films. Examples of the composite film used for the base film include those comprising each of the above-mentioned polymer films and a heat-sensitive adhesive resin film. At this time, as the heat-sensitive adhesive resin used in the above-mentioned heat-sensitive adhesive resin film, ethylene-propylene copolymer, propylene-butene copolymer, ethylene-propylene-butene copolymer,
Modified polyolefin-based resins, ionomer resins, mixtures thereof, and the like can be exemplified, and there is no particular limitation as long as they have adhesiveness to the polymer film.

Examples of the modified polyolefin resin include copolymers of unsaturated carboxylic acids such as maleic acid, fumaric acid and acrylic acid or derivatives thereof such as acid anhydrides, esters or metal salts with homo- or copolymers of olefins. For example, a modified polymer obtained by graft copolymerization can be exemplified as a typical example, and the modified polyolefin resin alone or other components such as a mixture with another polyolefin resin is also included in the modified polyolefin resin. . At this time, the above-mentioned olefins are high, medium and low density polyethylene, linear low density polyethylene, ethylene-propylene copolymer, ethylene-butene copolymer, ethylene-ethyl-acrylate copolymer, ethylene-vinyl acetate copolymer. Examples thereof include polymers. The configuration of the preferred substrate film is not particularly limited, and examples thereof include a biaxially oriented polypropylene film or a laminated film composed of a biaxially oriented polypropylene film and, for example, a uniaxially oriented ethylene-propylene copolymer film.

The metal-deposited film partially laminated on the substrate film according to the present invention may be one in which metal deposition is performed on at least one surface of the same type of film or a different type of film as the substrate film by an appropriate method, preferably And vacuum deposition can be exemplified, but there is no particular limitation. Vacuum deposition is, for example, a method of heating and evaporating a metal under a high vacuum and condensing the vapor on a plastic film placed under the same vacuum to form a metal thin film.As the metal used, Al, Ag, Any other metal such as Zn which is heated and evaporated under a high vacuum may be used without any particular limitation.

At this time, the thickness of the deposited film is not particularly limited, but usually 500
Å or more, preferably about 3000 to 5000 °. In this case, if the thickness is less than 500 °, the metallic luster may be inferior, but it can be used. Further, a resin coating or an appropriate plastic film may be laminated on the deposited film,
Printing may be performed without any particular limitation.

The silver-based film according to the present invention is not particularly limited, and examples thereof include a pearl-like film. The pearl-like film is, for example, a film formed by blending a pearl pigment, a metal powder such as aluminum powder and a filler with a polymer of the same type or a different type as the above-described base film, or A foaming agent is mixed with a polymer of the same or different type to form fine bubbles, and a pearly tone is formed by irregular reflection of light, or a blend of another resin incompatible with the polymer, for example, a polyolefin resin. After blending a polystyrene-based resin or low-density polyethylene with a filler, a film is formed and irregularly reflected light to give a pearl tone, or a pearl tone by providing fine holes. Further, a resin coating or an appropriate plastic film may be laminated on the surface of the pearl-like film, or printing with an appropriate printing ink may be performed.

The white film according to the present invention is not particularly limited, and examples thereof include matte films. The matte film can be exemplified by a matte or embossed surface-treated matte or embossed film on a smooth plastic film surface by an appropriate method, and the method is not particularly limited. A method in which the surface is engraved on a pattern or satin surface and is pressed with an appropriate pressure when passing between a metal roll and a rubber roll or the like which can be heated by steam or electric heating, etc., and a method of embossing on the surface of the film, Or a method in which a plastic film is dipped in an appropriate solution to erode the surface, or a method in which carborundum or metal particles are strongly blown with compressed air on the film surface to form a mat on the surface of the film by scratching the film. Can be illustrated. Further, a matte tone obtained by mixing white fine particles into a thermoplastic resin can also be exemplified. Further, a resin coating or a film of the same or different kind may be laminated on the surface of the white film, or printing with an appropriate printing ink may be used.

As the material of the metal-deposited film, the silver-based film or the white-based film to be laminated on the base film, various polymers and copolymers similar to those exemplified in the base film can be exemplified, and there is no particular limitation. .

As the film to be laminated to the base film, the above-mentioned metal-deposited film, silver-based film, at least one film selected from white-based films, or at least one selected from each film printed on each of the above films A type of film can be exemplified. In this case, even if a resin coating and a film made of the same or different resin as each film are further laminated on the printing surface or the non-printing surface of the printed film, it is not limited to this. It is.

The above printing is a metal-deposited film of an appropriate color such as blue, green, blue, and pink using an appropriate printing machine or the like.
The application is performed on the entire surface or a part of the silver-based film or the white-based film. At this time, the printing ink is not particularly limited as long as it can be printed in green, blue, pink, or other suitable colors.

A heat-sensitive adhesive resin film layer may be laminated on each of a metal-deposited film, a silver-based film, and a white-based film which are laminated with the base film according to the present invention, or a metal laminated with the base film. A printed surface or a non-printed surface (a surface opposite to a printed surface) of each of the above films printed on a vapor-deposited film, a silver-based film, a white-based film, or each of these films in an appropriate color such as blue, green, or pink. ) May be laminated with a heat-sensitive adhesive resin film layer, but is not limited thereto. At this time, examples of the heat-sensitive adhesive resin used for the heat-sensitive adhesive resin film include various polymers and copolymers similar to those exemplified in the section of the base film, and are not particularly limited.

The lamination of the substrate film according to the present invention and a metal-deposited film, a silver-based film, a white-based film, or at least one film selected from films in which colors are printed on each of these films is particularly limited. Although it is not necessary to perform lamination using an adhesive, extrusion lamination using an adhesive resin, hot-melt lamination, or thermocompression lamination, etc., lamination may be performed. A pressure lamination method is preferred, but not limited thereto.

Examples of the method of laminating via an adhesive include a dry lamination method, a wet lamination method, and a solventless lamination method, but are not particularly limited.

The dry laminating method is a method in which a vinyl resin, a cellulose resin, an epoxy resin, an acrylic resin, or a two-liquid reaction type (polyurethane resin and isocyanate resin) or the like soluble in an organic solvent is appropriately dissolved in the organic solvent. After coating the adhesive on a plastic film with an appropriate coating machine, drying in a drying zone, and then pressing and laminating with another film with a heating roll, a method of laminating can be exemplified.In the present invention, a vapor-deposited film, a silver-based film, An example is a method in which an adhesive is coated on a white film or each of the films on which the above-mentioned films are printed, and the film is pressed and laminated so as to be partially disposed on the base film.

The wet lamination method is a method of laminating in a wet state immediately after coating, and then drying. In the present invention, a metal-deposited film, a silver-based film, a white-based film or an adhesive is applied to each of the films printed on each of the above films. Can be exemplified by a method of partially laminating with a base film immediately after coating and drying by heating.

The non-solvent type lamination is a method of laminating using a non-solvent type adhesive as an adhesive.

At this time, various adhesives other than those described above can be exemplified as the adhesive, and there is no particular limitation.

The melt extrusion lamination method is not particularly limited, but the adhesive resin is heated and melted by an extruder, and then extruded into a film from the slit of the T-die to a certain thickness, and the molten resin (ie, the adhesive resin) is interposed. , A base film, a vapor-deposited film, a silver-based film, a white-based film or each film printed on each of the above films, and pressed.
A method of cooling and partially laminating can be exemplified. Further, the hot melt laminating method is not particularly limited, and the adhesive or the adhesive resin which is heated and melted is applied to a metal-deposited film, a silver-based film, a white-based film, or each of the films on which the above-described films are printed by an appropriate method. A lamination method of coating and partially thermocompression-bonding with a substrate film can be exemplified.

Alternatively, a silver-based film or a white-based film can be directly melt-extruded or hot-melt-laminated directly on a base film. A method other than the lamination method described above, such as a thermocompression lamination method, can also be exemplified.

Here, when performing the thermocompression lamination method, a method of thermocompression bonding between a suitable pinch roll having a heating roll and a compression roll can be exemplified, and a hard chrome-plated metal roll is preferable as the heating roll, but is not particularly limited.
Examples of the pressure roll include a metal roll, an elastic roll (for example, a rubber roll), and the like having the same diameter and a different shape as the heating roll. The heating temperature of the heating roll is not particularly limited, but is 110 to 1
60 ° C can be exemplified. The pressure of the pressure roll is not particularly limited, but a linear pressure of 10 to 100 kg / cm can be exemplified. In short, there is no particular limitation as long as it can be laminated by heating and pressurizing the base film and a metal-deposited film, a silver-based film, a white-based film, or a film obtained by printing each of the above films. When performing thermocompression lamination at this time, as described above, heat-sensitive adhesiveness is applied to the base film and / or the metal vapor-deposited film, the silver-based film, the white-based film, or each of the films printed on each of the above-mentioned films. Preferably, a resin film layer is laminated. More preferably, it is desirable that the heat-sensitive adhesive resin film surfaces of both films be brought into contact with each other during thermocompression bonding. The thickness of the heat-sensitive adhesive resin film is not particularly limited, but is preferably about 1 to 10 μm.

At this time, the metal-deposited film, the silver-based film, the white-based film, or the respective films on which the above-described films are printed may be subjected to a corona discharge treatment by an appropriate method, and there is no particular limitation.

The thickness of the substrate film according to the present invention is not particularly limited, but may be, for example, about 15 to 100 μm, and preferably about 20 to 70 μm. The thickness of the metal-deposited film, silver-based film, white-based film and the like is not particularly limited, but may be, for example, about 15 to 100 μm, and preferably about 20 to 70 μm. In short, it is only required that a special characteristic such as a metal vapor-deposited film, a silver-colored film, a white-colored film or the like is exhibited.

The present invention is a partially deposited metal film on the base film,
By laminating at least one film selected from a silver-based film, a white-based film, or each of the above-described films on which printing has been performed, an extremely beautiful laminated film can be obtained for the first time. The film is not partially printed with gold, silver or white ink on the thermoplastic film, and has a poor color tone, so that a beautiful film as in the present invention cannot be obtained.

Partially laminated according to the present invention, for example, at least a portion of the base film as shown in the drawing, metal deposited film, silver-based film, white film or at least selected from each film printed on each of the above films By laminating one kind of film, for example, a laminated portion having an appropriate interval, a non-laminated portion may be laminated by randomly arranging them in a linear or striped pattern, or with one surface of a base film. It may be partially laminated on the other surface, and there is no particular limitation on being partially laminated.

The present invention is not particularly limited, but is particularly suitable for packaging ornamental plants and potted plants. Here, the ornamental plants can be exemplified by horticultural plants, other plants and plants, flowers, and other appropriate plants, and preferably, can be exemplified by those in which the above plants are appropriately bound in a book. The potted plant includes, for example, flowers, bushes, grasses, and other appropriate plants planted in a flower pot.

 Next, the drawings will be described.

1 (a), (b), (c) and (d) are cross-sectional views showing the structure of one embodiment according to the present invention, wherein (1) is a substrate film, (2) is a substrate film, metal A heat-sensitive adhesive resin layer of any one of a vapor-deposited film, a silver-based film, and a white-based film, (3) an adhesive layer, (4) a metal-deposited film,
Indicates either a silver film or a white film.
(5) shows a printing ink layer. The present invention relates to (a) and (b)
(C) The present invention is not limited to only (d), but includes various structures, and for example, the above structure without a printing ink layer may be used. (A), (C) and (D) are examples of lamination by the thermocompression lamination method. In this case, (A) and (B)
It may be laminated via an adhesive in the configuration of (c).

FIG. 2 shows a laminated film having a transparent portion (a portion of only a base film) (12) and an opaque portion (a portion on which a silver-based film or the like is laminated) in a laminate film for packaging an ornamental plant. This is an example used for (No).

Figure 3 shows the transparent part (part of the base film only) (12)
In this example, a laminated film having an opaque portion (for example, a portion on which a silver film is laminated) is used for packaging a potted plant (the plant is not shown).

FIGS. 2 and 3 show examples of applications of the laminated film of the present invention, and are not particularly limited, and can be used for other various packaging. It can also be used in fields other than packaging, and there is no particular limitation on the application.

The application examples of FIGS. 2 and 3 will be described in more detail.
The figure shows a laminate film according to the present invention as shown in FIG.
2) is the entrance side (11) of the article to be packaged, and at least one is open, and the base film (1) portion is outside, and the laminated metal vapor deposition film, silver film, and white film (4) are laminated. Or a taper shape from the arrow side in FIG. 4 so that at least one film portion selected from the films obtained by printing (5) all or part of each of the above films is inward. Is wound into a cylindrical body having a truncated conical shape or a conical shape (an inverted truncated conical shape or an inverted conical shape when viewed from the drawing). At this time, the printing portion (5) is not particularly limited, but it is more preferable that the printing portion (5) comes to the back surface (the inner surface of the package). However, as shown in FIG. You may make it directly possible from a table | surface (outside). In order to prevent the cylindrical body formed into a frustoconical shape or a conical shape by winding a predetermined number of times in a taper shape, it is necessary to fix one end with an adhesive tape (9) or the like with a fixing member. Good. The above is only an example of use and is not particularly limited.

When the laminated film of the present invention is used for packaging, the shape of the package is not limited to FIGS. 2 and 3, and may be an appropriate shape. For example, it may be used for an appropriately shaped package such as a triangular bag (see FIG. 6) or a square bag, and there is no particular limitation. Such an appropriately shaped package may be formed by heat sealing or an adhesive, and there is no particular limitation.

 Next, examples will be described.

<Example-1> Acrylic adhesive composed of a biaxially stretched polypropylene film 40 µm, a long base film 48 cm wide, a polypropylene resin, a low density polyethylene resin and calcium carbonate, and dissolved in a mixed solvent of ethyl acetate and toluene. A biaxially stretched pearl-like film having an adhesive layer dried after coating with a 30 µm, dry-laminated 16 cm wide and having a thickness of 70
A band-shaped laminated film in which a pearl-like film was partially laminated was obtained. The laminated film had a laminated portion 16 cm in the width direction and a non-laminated portion 32 cm in the width direction.

<Example-2> The laminated film obtained in Example-1 was cut into a length of 50 cm, and the laminated silver portion of the pearl-like film was opened so that at least one side on the entrance side of the packaged product was opened. Was wound into a frustoconical cylindrical body (see FIG. 2) which was double-wound in a tapered shape such that was inside.

Such a package for a bouquet is a package in which only the base film is a flower portion, and a silver portion on which a pearl-like film is laminated is a stem portion. A ribbon was attached to the shape. The bouquet package had better decorativeness than the conventional bouquet package, and the bouquet was easily packaged. As described above, the film of the present invention is suitable for packaging a bouquet.

<Example-3> The same base film 40 µm as in Example 1 and a biaxially stretched pearl-like film 20 µm made of a polypropylene resin, a linear low-density polyethylene resin and calcium carbonate, all of which had a pale pink print applied thereto, were used. An adhesive was applied in the same manner as in Example 1 so that the printed surface constituted the surface, and a strip-like laminated film was obtained by a dry lamination method.

This laminated film is cut into a predetermined length, and is tapered so that at least one side on the entrance side of the packaged material is opened and the laminated portion of the pearl-like film having a printing surface is on the inside. The potted plant was sowed (see FIG. 3) in a double-wound frustoconical cylindrical body. At this time, the portion of the base film alone was the plant portion, and the portion where the pale pink print was applied and the biaxially stretched pearl film was laminated was the portion of the flowerpot. The package was suitable for potted plant packaging having excellent decorative properties. As described above, the film of the present invention is suitable for packaging potted plants.

<Reference Example-1> A composite comprising a biaxially stretched polypropylene film and a 3: 1 mixture of a monoaxially stretched ethylene-propylene random copolymer and an ethylene-propylene-butene random copolymer as a heat-adhesive resin. Composition of base film 40
μ, width 100 cm, biaxially stretched pearl-like film composed of polypropylene resin, low-density polyethylene resin and calcium carbonate and uniaxially stretched ethylene as heat-sensitive adhesive resin layer
A pearl-like film 30 μm and a width of 34 cm, on which a propylene-butene random copolymer film is laminated, are partially heated at the center of the base film as shown in FIG. Compression lamination was performed to obtain a laminate film in which a pearl-like film was thermocompressed between pinch rolls at the center. The thermocompression lamination conditions were as follows: a heated metal roll temperature of 134 ° C., a linear pressure of 35 kg / cm, and a lamination speed of 120 m / min. This film had a laminated portion (non-transparent portion) of 34 cm at the center and a transparent portion consisting of only the base film at both ends of 33 cm. On this occasion,
The base film was supplied to the heated metal roll side, and the pearl-like film (silver type film) was supplied to the pressure roll side.

<Reference Example-2> In the biaxially stretched pearlescent film obtained in Example-4, the entire surface was printed with a pale pink ink on the opposite surface of the heat-sensitive adhesive resin film layer. Next, in the same manner as in Example 4, lamination was similarly performed at the center so that the heat-sensitive adhesive resin layers were in contact with each other. The resulting laminate film is cut at the center indicated by the chain line in FIG. 5 and bisected, one of which has a transparent portion composed of only a 33 cm base film, and the other has a laminated portion (non-transparent portion) having a 17 cm printed surface. A strip-shaped laminate film was obtained. The laminate film was cut into a length of 50 cm, and a double-tapered truncated cone-shaped package (see FIG. 2) was formed so that the printing surface was on the inside, and the bouquet was packaged. At this time, the printing surface is double-wrapped in a tapered shape so that the printing surface comes inside, and thus the printing surface constitutes the inside surface (back surface) of the package. The shadow of the printing ink on the inner surface (rear surface) was desired to have a light color tone, and the decorative effect was excellent. (The same applies to Example-3.) Such a packaged product had decorativeness and high commercial value. As described above, the film of the present invention is suitable for packaging ornamental plants.

<Effects of the Invention> The present invention is for packaging ornamental plants, packaging potted plants,
A laminated film that can be used in packaging applications such as direct mail, postal envelopes, telephone card bags, and other various fields. It is expected to have extraordinary effects such as being performed.

[Brief description of the drawings]

(A), (b), (c), and (d) are cross-sectional views of one embodiment of the laminated film of the present invention, FIG. 2 (a) is a perspective view of an ornamental plant package, and FIG. (B) is a cross-sectional view taken along line AA, FIG. 3 is a perspective view of a package of a potted plant, FIG. 4 is a perspective view of one embodiment of the laminated film of the present invention, and FIG. FIG. 6 is a perspective view of a triangular bag. DESCRIPTION OF SYMBOLS 1 ... Base film 2 ... Heat sensitive adhesive resin film layer 3 ... Adhesive layer 4 ... Metal vapor deposition film, silver color film or white film 5 ... Printing ink layer 6 ... Ribbon 7 ... Pot bowl 8: Laminated film 9: Tape 10: Film in which a printing ink layer is formed on a metal-deposited film, silver-based film or white-based film 11: Entrance side of the packaged object 12: Transparent part in the laminated film (Part of base film only) 13 …… Triangular bag 14 …… Heat-sealing wire 15 …… Folded part

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B32B 1/00-35/00

Claims (5)

(57) [Claims] The present invention is characterized in that at least one film selected from a metal-deposited film, a silver-based film, and a white-based film is partially laminated on a base film via an adhesive. Laminate film. 2. The laminated film according to claim 1, wherein at least one kind of film selected from a metal-deposited film, a silver-based film and a white-based film is entirely or partially printed on the laminated film. . 3. The laminate film according to claim 1, wherein the laminate film is applied as a package for ornamental plants or a package for potted plants. 4. A frustum-shaped or conical cylindrical body which is wound in a tapered shape a predetermined number of times so as to open at least one side, and is applied as a packaging for ornamental plants or a packaging for potted plants. The laminate film according to claim 3, wherein 5. A packaging for ornamental plants or a packaging for potted plants, wherein a portion consisting only of the base film (1) is made to be the entrance side of the article to be packaged and the base film portion is placed outside. The laminate film according to claim 3, wherein the laminate film is applied as: