JP4334264B2 - White light-shielding film and cylindrical label - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a white light-shielding film and improvement of the surface of the white light-shielding film.
[0002]
[Prior art]
Conventionally, plastic containers such as so-called PET bottles and glass containers are widely used as containers for beverages and foods. In addition, when filling contents such as green tea or yogurt that are likely to be altered or discolored by light, colored containers have been used to provide light-shielding properties. Transparent containers are used.
[0003]
Therefore, a white film is used as a label film packaged in such a transparent container. Since this white film has a light shielding property and the surface side is white, by providing an appropriate design printing layer such as a product name from above, the characters and designs printed on the white background are beautiful. Appears, making it possible to produce labels that are rich in design while utilizing the white background.
Further, as a white film having improved light shielding properties, a white light shielding film in which a black printing layer is provided on the back surface of a white film is known as disclosed in JP-A-2003-26252.
[0004]
[Patent Document 1]
JP 2003-26252 A (page 3, [0010]-[0011])
[0005]
[Problems to be solved by the invention]
The white light-shielding film is preferable because it is provided with a black-colored printing layer, so that it can shield ultraviolet rays and visible light more and has excellent light-shielding properties.
However, such a white light-shielding film has a black printed layer on the back surface, so that the surface side is darkened and reflected. Therefore, when the design printing layer is applied on this, the white color of the background does not appear and the viewer may be given a dark image.
[0006]
In view of such problems, the present invention provides a white light-shielding film and a cylindrical label which are improved in that the color of the back surface hardly affects the front surface side in a white film provided with a black print layer. Is an issue.
[0007]
[Means for Solving the Problems]
A first means for solving the above problem is that a black solid printing layer 3 having a black, gray or dark blue color is provided on the back surface 2a of the white film 2 having a white surface. on the surface side of the film 2, the white-based light-shielding the pearl solid print layer 5 printed with pearl ink containing a pearl pigment white-based or silver-based is provided to face the blackish solid print layer 3 on the transparent vehicle Related to film.
Preferably, a design printing layer 6 is provided on the white film 2, and the pearl solid printing layer 5 faces the black solid printing layer 3 except for a portion where the design printing layer 6 is provided. Is provided.
[0008]
In the white light-shielding film, since the pearl pigment is dispersed on the surface side of the white film reflected by the black solid print layer 3 on the back surface, the surface side of the white film is brightened by the pearly luster of the pearl pigment. Can show.
Since the pearl solid printing layer 5 is provided except for the design printing layer 6 in the preferable white film, the gloss of the pearl pigment does not appear in the design of the design printing layer 6 and the ink used in the design printing layer 6 Characters and designs can be shown with colors. On the other hand, the white surface of the white film 2 that can be seen as the base can be brightened by the luster of the pearl pigment.
As means for providing the pearl solid print layer 5 on the surface side of the white-based film 2, or provided pearl solid print layer 5 on the surface of the white film 2 film itself exhibits white, white printing on the rear surface of the transparent film or provided Pearl solid print layer 5 on the surface of the transparent film of the white-based film 2 of a layer is provided, or the like providing the pearl solid print layer 5 between the transparent film and the white printed layer, various Means are included.
[0009]
Further, the second means for solving the above problems, on the back surface 2a of the white-based film 2 which surface exhibits a white, black, a black-based solid print layer 3 exhibiting the color of gray or dark blue is provided, wherein A design printing layer 6 is provided on the white film 2, and a pearl solid printing layer 5 is provided on the surface side of the white film 2, and a pearl ink containing a white or silver pearl pigment is printed on a transparent vehicle. The back surface 2a of the white film 2 is provided with a belt-like back surface adhered portion 21 on one side of the design print layer 6 in the longitudinal direction, and the front surface 2b of the white film 2 On the other side of the design print layer 6, a strip-shaped surface adherend portion 22 is provided in the longitudinal direction, the black solid print layer 3 is provided except for the back adherend portion 21, and The surface adherend Except for the 2 according to the white-based light-shielding film the Parubeta print layer 5 is provided.
Preferably, the pearl solid printing layer 5 is provided except for a portion where the design printing layer 6 is provided.
The second white light-shielding film can form a cylindrical label by bonding the back-surface-attached portion and the surface-attached portion using an adhesive or a solvent, and further, black on the back side of the adhesive portion. Since the solid solid printing layer is present and the pearl solid printing layer is present on the surface of the sticking portion, it is possible to provide a cylindrical label that can be reliably shielded from light even in the sticking portion.
Moreover, since the said preferable white type film is provided with the pearl solid printing layer 5 except the design printing layer 6, the luster of a pearl pigment does not appear in the design etc. of the design printing layer 6, and is used in the design printing layer 6. Characters and designs can be shown with ink colors. On the other hand, the white surface of the white film 2 that can be seen as the base can be brightened by the luster of the pearl pigment.
[0010]
Furthermore, a third means for solving the above problem relates to a cylindrical label in which the second white light-shielding film is formed into a cylindrical shape, and the back surface bonded portion 21 and the front surface bonded portion 22 are bonded. .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the surface treatment method for the white light-shielding film and the white light-shielding film of the present invention will be described with reference to the drawings.
In FIG. 1 and FIG. 2A, reference numeral 1 denotes a white-type film 2 whose front side is white, a black-type print layer 3 provided on the back side 2a, and a black-type print out of the surface 2b of the film 2 A pearl print layer 5 provided substantially facing the layer 3, and a plurality of design print layers 6 (shown by filling) provided with a predetermined display such as a trade name and description on the surface 5 b of the pearl print layer 5, A white-type light shielding film provided with the overprinting layer 7 provided in the surface 6b of this design printing layer 6 is shown. By cutting this film 1 for each design printing layer 6, one label can be obtained.
[0012]
Specifically, the white film 2 is made of, for example, a base polymer such as polyolefin resin such as polypropylene, polystyrene resin, polyester resin, cyclic olefin resin, polyvinyl chloride resin, titanium dioxide, barium sulfate, A heat-shrinkable film obtained by mixing an opaque white pigment such as calcium carbonate to form a film and stretching it can be used. The white film 2 is a film that is milky white in itself.
[0013]
On the back surface 2a of the film 2, a strip-shaped back surface adhered portion 21 is secured in the longitudinal direction on one side of the design print layer 6 (the illustrated film has three design print layers in the width direction). 6 are juxtaposed, so that three back-surface-attached portions 21 are provided), and a black pigment such as carbon black is blended in the vehicle except for the back-surface-attached portion 21. A black printing layer 3 made of black ink is solid-printed by a gravure printing method or the like.
[0014]
Further, on the surface 2 b of the white film 2, a band-shaped surface adherent portion 22 is secured in the longitudinal direction on the other side of the design print layer 6, and the surface adherent portion 22 is excluded. The pearl printing layer 5 made of pearl ink containing a pearl pigment is solid-printed by a gravure printing method or the like.
Then, the black print layer 3 is provided on the back surface of the front surface adherence portion 22 via the white film 2, while the pearl print layer 5 is provided on the surface of the back surface adherend portion 21. ing. In addition, this back surface adherence part 21 and the surface adherence part 22 are parts used as a bonding margin in the case of using the white-type light shielding film 1 as a cylindrical label so that it may mention later.
As the pearl ink, for example, a pearl pigment blended in a transparent vehicle such as an acrylic resin in an amount of 1 to 25% by weight, preferably 5 to 15% by weight, based on the total amount can be used. Examples of the pearl pigment include those in which mica is coated with a metal oxide having a relatively high refractive index such as titanium oxide and iron oxide in a thin film, and the flow rate distribution is about 5 to 60 μm (in the case of mica, The shape is preferably flat. Especially, since it provides in the white type film 2, a white type or silver type pearl pigment is preferable.
The film 2 provided with the pearl printing layer 5 has a pearl pigment dispersed on the surface 2b, which scatters and reflects light to reveal a pearly luster. Therefore, the surface 2b of the film 2 looks bright.
[0015]
On the pearl print layer 5 (front surface), except for the portion corresponding to the back-surface-attached portion 21, a predetermined display such as a product name or a pattern such as a description or characters is displayed in a desired color such as red or blue. The design printing layer 6 represented by ink is printed in a single color or multicolor printing (in the figure, the black-painted portion indicates a color ink adhering portion constituting the design printing layer 6. The same applies hereinafter). Furthermore, an overprint layer 7 made of an overprint varnish is printed on the design print layer 6.
[0016]
The white light-shielding film 1 cuts, for example, a portion indicated by an arrow B shown in FIGS. 1 and 2A (that is, a boundary portion between the back surface-attached portion 21 and the surface-attached portion 22) in the longitudinal direction. Thereby, as shown to (a) of FIG. 3, the label continuous body 10 with which the some label was connected to the longitudinal direction can be obtained. The label continuous body 10 is formed in a cylindrical shape with the design printing layer 6 on the outer side, and as shown in FIG. 3 (b), the back surface adherence portion 21 and the surface adherence located on both sides are formed. A cylindrical label as shown in (c) of FIG. 3 is formed by overlapping the portions 22 and pasting them together with an adhesive or heat seal, and then cutting each design print layer 6 in the width direction. 11 can be produced. For example, the cylindrical label 11 is inserted into a transparent container such as a transparent plastic bottle and thermally contracted to obtain a package with the light-shielding cylindrical label 11 attached thereto.
[0017]
In the white light-shielding film 1 of the present invention, since the pearl pigment is dispersed on the surface side of the white film 2, the white film 2 is relieved by the black printing layer 3 and the white color is brightened. Can show. Accordingly, the characters and designs of the design printing layer 6 with the white surface of the white film 2 as a base become clear, and a label with a beautiful design can be produced.
Further, since the pearl print layer 5 is provided substantially corresponding to the portion where the black print layer 3 is provided, only the portion reflected by the black print layer 3 can be shown brightly. Therefore, since the difference in brightness from the portion not having the black print layer 3 can be made relatively small, it is possible to provide the white light shielding film 1 exhibiting a uniform white color as a whole.
Moreover, since the black-type printing layer 3 is provided in the back surface of the surface sticking part 22, the label obtained from the said white type light-shielding film 1 is black also on a sticking part, when this is used as a cylindrical label. The system printing layer 3 exists and can more reliably shield visible light and the like. Furthermore, since the pearl print layer 5 is provided on the surface of the back surface adherend part 21, when this is used as a cylindrical label, the pearl print layer 5 exists in the sticking part, and even to the sticking part. It is possible to obtain a cylindrical label that can appear bright and has a uniform white color as a whole. In the case where pearl print layer 5 on the surface of the case blackish print layer 3 is provided on the back surface of the surface to be bonded portion 22 and the rear surface the adhesive portion 21 is provided, advantages as described above However, the present invention is not necessarily limited thereto. For example, as shown in FIG. 2B, the white light-shielding film 1 (label) in which the black print layer 3 or the like is not provided on the back surface of the surface adherend portion 22. )
[0018]
It should be noted that the present invention is not limited to the above-described embodiment, and appropriate configurations can be added, substituted, or changed in design within the scope intended by the present invention. Hereinafter, with respect to the modified example of the above-described embodiment, mainly different portions will be described. For the same configuration, terms and drawing numbers are used, and the description thereof may be omitted.
(Other embodiments of white film)
In the above-described embodiment, the white film 2 is preferable because the film itself exhibits white color, so that the degree of whiteness can be increased. However, the present invention is not limited to this, and for example, FIG. 4 (a), a white film in which a white printing layer 8 made of a white ink containing a white pigment such as titanium oxide or zinc oxide is provided on the surface 2b of the transparent film 22 by solid printing or the like. 2 may be used. Moreover, as shown in FIG.4 (b), you may use the white film 2 in which the white printing layer 8 was provided in the back surface 2a of the transparent film 22, and the white film 2 in which the surface exhibits white may be used. For example, the specific configuration is not limited to the above embodiments.
In the case of using the white film 2 in which the white printing layer 8 is provided on the back surface side of the transparent film 22, as shown in FIG. 4C, the design printing layer is formed on the back surface 2a of the transparent film 22. 6 and the white print layer 8 may be provided on the back surface 6 a of the design print layer 6.
In the above embodiment, a heat-shrinkable film is exemplified as the white film 2. However, for example, a film that does not heat-shrink or a self-stretchable (stretch) film may be used, and the properties of the film are limited. It is not something. However, in the case of a heat-shrinkable film, for example, it is preferable to cover the substantially entire body when it is attached to a container having a large diameter difference between the body parts such as a PET bottle.
[0019]
(Other embodiments of pearl print layer)
In the above embodiment, the pearl print layer 5 is directly provided on the surface 2b of the white film 2, but for example, as shown in FIG. The layer 6 may be provided, and the pearl print layer 5 may be provided on the surface 6 b of the design print layer 6. Moreover, as shown in FIG.5 (b), you may provide the pearl printing layer 5 in the part except the part in which the design printing layer 6 is provided. Since the pearl printing layer 5 is provided in addition to the design printing layer 6 as described above, the pearl pigment is not dispersed on either the back surface or the front surface of the design printing layer 6. The luster of the pearl pigment does not appear, and a predetermined display such as a pattern can be shown to the viewer with the color of the used color ink itself. Furthermore, as a more preferable aspect in which the pearl print layer 5 is provided in a portion excluding the design print layer 6, as shown in FIG. 5C, the design print layer 6 has a portion not having the color ink attachment portion 6a. The pearl printing layer 5 is provided, in other words, it is preferable to disperse the pearl pigment by providing the pearl printing layer 5 on the white part of the white film 2 where the white surface of the white film 2 is exposed on the surface side.
Further, in the case of using the white film 2 in which the white printing layer 8 is provided on the back surface side of the transparent film 22, as shown in FIG. 5D, the design printing layer is formed on the back surface 2a of the transparent film 22. 6 and the pearl print layer 5 may be provided on the back surface 6a of the design print layer 6, and the white print layer 8 may be provided on the back surface 5a. Although not particularly illustrated, in this case, the design print layer 6 And the order of the pearl printing layer 5 may be reversed, or the pearl printing layer 5 may be provided in a portion where the design printing layer 6 is not provided as described above. In short, the pearl pigment is present on either the surface side of the white film 2 (when the white film 2 is composed of the transparent film 22 and the white print layer 8, it means the surface side of the white print layer 8). What is necessary is just to be distributed.
[0020]
Moreover, in the said embodiment, although the pearl printing layer 5 is provided in the substantially facing surface of the black printing layer 3, the pearl printing layer 5 is not necessarily provided in the whole facing surface in the black printing layer 3. FIG. The pearl print layer 5 may be provided in a wider range or a narrower range than that.
Further, if necessary, a yellow pigment (for example, an azo pigment exhibiting a yellow color) may be further mixed with the pearl ink to color the pearl print layer 5 to a light yellow color. By coloring, the influence of the black printing layer 3 can be further alleviated. In the above embodiment, the pearl pigment is dispersed on the surface side of the white film 2 by printing the pearl ink. However, the means for dispersing is not limited to printing.
[0021]
(Other embodiments)
In the above embodiment, the black printing layer 3 is made of black ink. However, the black printing layer 3 is not limited to black, and may be a black color such as gray or dark blue. The color is not limited to black as long as it is a dark color capable of improving the light shielding property.
Furthermore, in the said embodiment, although the overprint layer 7 is provided in the outermost surface side of the white-type film 2, this overprint layer 7 is not essential and may be abbreviate | omitted suitably. Further, for example, an appropriate print layer may be provided in each layer, such as providing the overprint layer 7 on the black print layer 3.
Moreover, in the said embodiment, although the cylindrical label 10 is illustrated as a usage method of the white type light-shielding film 1, for example, an adhesive etc. are apply | coated to the back surface of the white type light-shielding film 1, and this film 1 Can be cut into a predetermined shape and used as an adhesive label that can be attached to the surface of a container. Furthermore, the container to which various labels are attached is not limited to a transparent container, and may be used for a colored container such as a white container. In addition, the usage method of the white-type light shielding film of this invention is not limited to the thing of said each embodiment.
[0022]
【The invention's effect】
As described above, the white-based light-shielding fill beam according to the present invention, since Parubeta printed layer on the surface side of the white film blackish solid print layer reflects is provided facing the surface by the pearl like luster The side can be seen brightly.
Therefore, even if the color of the black solid printing layer affects the surface side of the white film, it is possible to provide a white light-shielding film that exhibits a uniform white color on the whole.
And if you provide a design printing layer that displays the pattern on the white surface of the white light-shielding film, you can display the pattern while using the bright white color of the background, producing labels with excellent design. can do.
[0023]
Further, the white-based light-shielding film pearl solid print layer is provided on a portion excluding the printed design layer, because pearl pigment printed design layer is not dispersed, and the pattern of the printed design layer is not appeared pearl similar gloss The design of the design printing layer is represented by the color of the ink used therefor, while the white surface of the white film that appears as the base of the design printing layer and the like can be brightened by the gloss of the pearl solid printing layer .
In addition, the white light-shielding film provided with the black solid printing layer except for the back surface-adhered portion and provided with the pearl solid print layer except for the front surface-adhered portion includes the back surface-adhered portion and the surface-coated surface. A cylindrical label can be formed by pasting together the attachment portions. This cylindrical label can be reliably shielded from light even in the pasted portion and looks bright.
[Brief description of the drawings]
FIG. 1 is a partially omitted plan view showing a white light-shielding film of the present invention.
FIG. 2A is a cross-sectional view taken along line AA in FIG. 1, and a central portion is omitted. (B) is a partially omitted cross-sectional view showing another embodiment of the white light-shielding film of the present invention.
FIGS. 3A and 3B show examples of use of the white light-shielding film of the present invention, wherein FIG. 3A is a partially omitted plan view of a label, FIG. 3B is a partially omitted sectional view showing a sticking portion, and FIG. FIG.
FIG. 4 is a partially omitted sectional view showing another embodiment of the white light-shielding film of the present invention.
FIG. 5 is a partially omitted cross-sectional view showing another embodiment of the white light-shielding film of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... White-type light shielding film, 2 ... White-type film, 2a ... The back surface of a white-type film, 2b ... The surface of a white-type film, 3 ... Black-type printing layer, 5 ... Pearl printing layer, 6 ... Design printing layer, 7 ... Overprint layer

Claims (5)

A white light-shielding film in which a black solid print layer (3) having a black, gray or dark blue color is provided on the back surface (2a) of a white film (2) having a white surface, on the surface side of the white film (2), facing the pearl solid print layer printed with pearl ink containing a pearl pigment white system or silver-based transparent vehicle (5) is the blackish solid print layer (3) A white light-shielding film characterized by being provided. The white film (2) is provided with a design printing layer (6), and the black solid printing is performed except that the pearl solid printing layer (5) is provided with the design printing layer (6). The white-type light shielding film of Claim 1 provided facing the layer (3). A white light-shielding film in which a black solid print layer (3) having a black, gray or dark blue color is provided on the back surface (2a) of a white film (2) having a white surface, A pearl solid in which a design printing layer (6) is provided on a white film (2), and a pearl ink containing a white or silver pearl pigment is printed on a transparent vehicle on the surface side of the white film (2). A printed layer (5) is provided, and the back surface (2a) of the white film (2) is on one side of the design printed layer (6) and has a strip-shaped back surface adhered portion (21) in the longitudinal direction. And the surface (2b) of the white film (2) is provided with a belt-like surface adhering portion (22) in the longitudinal direction on the other side of the design printing layer (6). Except for the back-surface-attached part (21) White-based light-shielding film, wherein the color system solid print layer (3) is provided, said Parubeta printing layer except and the surface to be bonded portion (22) (5) is provided. The white light-shielding film according to claim 3, wherein the pearl solid printing layer (5) is provided except for a portion where the design printing layer (6) is provided. The cylindrical label which made the white type | system | group light-shielding film of Claim 3 or 4 cylindrical, and the said back surface adherence part (21) and the surface adherence part (22) were stuck.

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