JP5255757B2 - Process for producing semi-transparent pattern molded body for compact container, and molded body with semi-transparent pattern for compact container obtained thereby - Google Patents

Description

The present invention relates to preparation and thereby the compact container translucent textured molded article obtained compact container translucent textured molded article having a semi-transparent pattern on at least a portion of the molding surface.

A compact container, a lipstick container, and the like that contain cosmetics are required not only to have functionality but also to have a good design and a design that reflects the product image. As a technique to meet such a demand, for example, a technique in which a gloss by a metal plating layer is imparted to the inner surface of a container made of a transparent material (see Patent Document 1), or a technique in which a pearl gloss is imparted to the container surface (Patent Document 2). Reference). Recently, a container (see Patent Document 3) including a half mirror layer that has a metallic gloss and is translucent when viewed from the inside has also been proposed.
JP 2000-129448 A Japanese Patent Laid-Open No. 11-981 JP 2003-310343 A

  By the way, recently, products that have specifications that show through the interior have gained popularity as “skeleton specifications”, and even in cosmetic containers, the entire lid is colored and transparent, or some of the colored layers are Many of them are notched and have watermarks. However, as described in Patent Document 3 described above, for example, in the case of a compact container, since many mirrors are attached to the inside of the lid, when the inside is clearly seen through, the attachment part of the mirror is the front side. There is a problem of losing aesthetics through.

  Therefore, a semi-transparent pattern area (even if the entire surface is translucent is also called a “translucent pattern”), although the interior is transparent to a certain extent and has a light atmosphere and is interesting, but the interior is not clearly visible. There is growing interest in the technology that is provided.

  Such a translucent pattern can be obtained, for example, by molding a molded body with a transparent plastic and performing metal deposition on the molding surface under special conditions that limit the deposition amount. Moreover, the target translucent pattern can be obtained by transferring this to the predetermined surface of a transparent plastic molding using the transfer sheet provided with such a half vapor deposition film as a transfer layer.

  However, in order to obtain the above half-deposited film, there is a problem that it is not easy to control the deposition conditions, and the desired transparency cannot be easily obtained. In addition, in order to create a more impressive pattern, when combining a translucent part and a non-transparent part, and further combining these with a concavo-convex pattern or a colored pattern, the number of processes for pattern addition increases, There is a problem of requiring troublesome work.

The present invention has been made in view of such circumstances, can form a translucent pattern very easily, and can maintain the portion constituting the translucent pattern beautifully over a long period of time. An object of the present invention is to provide a method for producing a molded article with a translucent pattern for a compact container, and to provide a molded article with a translucent pattern for a compact container obtained thereby.

To achieve the above object, the present invention is made of a transparent member that the resin material formed by injection molding using a mold, by transferring the concave-convex portion for shaping of the die, polygonal pyramid shape or a polygonal pyramid Preparing a molded body having a molding surface provided with a concavo-convex pattern formed by combining a plurality of trapezoidal concave portions or convex portions, and a metal thin film layer formed on at least a part of the front surface or the back surface of the molding surface; Of the metal thin film layer, scanning is performed while intermittently irradiating the laser beam to the area A surrounding at least a part of the concave or convex portions constituting the concavo-convex pattern, and the metal thin film layer in the area A is irradiated at fine intervals. by removing, as well as in the region a translucent, surrounded in this region a, and to leave recesses or protrusions of a part at least constitutes the uneven pattern as non-transparent gloss unit compact The preparation of containers for semi-transparent textured moldings and first aspect.

In particular, the present invention has an irradiation removal portion formed by the intermittent irradiation of the laser beam in the form of a fine line or dot having a width of 25 to 100 μm, and the interval between the irradiation removal portions adjacent to each other is particularly large. The manufacturing method of the molded object with a translucent pattern for compact containers set so that it may be set to 50-500 micrometers is made into the 2nd summary.

Furthermore, the present invention provides a molded article obtained by the production method is the above first aspect, a transparent member of resin material formed by injection molding using a mold, uneven portion for shaping of the mold by transferring, polygonal pyramid shape or the molding surface of the concave and convex pattern is imparted formed by combining plural recesses or protrusions of the polygonal frustum shape, the metal thin film formed on at least a part of the surface or back surface of the molding surface A region A surrounding at least a portion of the concave or convex portions constituting the concavo-convex pattern in the metal thin film layer is irradiated and removed at fine intervals by intermittent irradiation of the scanned laser beam. together and becomes translucent, this region surrounded by a, the irregular concave or convex portion of the pattern at least forms a part is non-transparent compact container translucent pattern remains a glossy portion TsukeNaru The body and the third aspect.

In the present invention, the irradiation removal portion formed by the intermittent irradiation of the laser beam is a fine line or dot having a width of 25 to 100 μm, and the interval between the irradiation removal portions adjacent to each other is 50 to 500 μm. A compact with a translucent pattern for a compact container is a fourth gist.

  In the present invention, the transparency of “transparent”, “semi-transparent”, and “non-transparent” is not limited by numerical values such as light transmittance, but the respective regions formed on the same plane, It suffices if there is a difference in transparency to the extent that they are recognized as being different from the transparency of other regions. This is because it is only necessary to visually recognize that the pattern is consciously given due to the difference in transparency.

In the present invention, the laser beam irradiation that was originally used for removing or drilling a certain area in a concave shape is finely applied to the metal thin film layer formed on the surface (back surface) of the transparent molded body. By performing intermittently at intervals, a large number of very fine irradiation removal portions are dispersedly formed, and the surface thereof is made translucent. According to this manufacturing method, a translucent pattern can be formed very easily with the required transparency. Moreover, if the laser beam irradiation area is set in advance, the semi-transparent pattern formation area can be repeatedly reproduced with high accuracy, and the working efficiency is high. Various patterns of impression are given by combining areas with different transparency such as non-transparent and semi-transparent parts by metal thin film layer, and further translucent part and transparent part from which metal thin film layer is completely removed. Therefore, it is possible to obtain a molded article with a translucent pattern for a compact container having an interesting design.

In particular, a concavo-convex pattern is provided on the formation surface of the metal thin film layer or the opposite surface thereof, and at least a part of the concave portion or the convex portion constituting the concavo-convex pattern is translucent by the special method. Therefore, a particularly interesting appearance can be obtained by comparing the glossy surface of the metal thin film layer in the concave or convex part left as the non-transparent glossy part and the translucent part surrounding it. .

  And especially in this invention, the irradiation removal part formed by the intermittent irradiation of the said laser beam is made into a fine linear or dot shape with a width | variety of 25-100 micrometers, and the space | interval of the irradiation removal parts adjacent to each other is 50-. What was set so that it might become 500 micrometers can obtain the semi-transparent pattern of preferable transparency in the middle of a completely transparent part and a completely non-transparent part, and is suitable.

In addition, the molded article with a translucent pattern for a compact container obtained by the production method of the present invention maintains a good state of the translucent pattern imparted to the surface over a long period of time, and becomes a product with high added value. . Moreover, there is an advantage that there is almost no difference in height between the translucent pattern portion and other portions, and the touch is good.

  Next, the best mode for carrying out the present invention will be described.

  FIG. 1 is a perspective view of a compact container that is the best mode for carrying out the present invention, and FIG. 2 is a sectional view taken along line XX ′. In these drawings, reference numeral 1 denotes a main body, and a cosmetic 2 such as a foundation is accommodated and held in a recess 2 provided on the left side toward the inside thereof. Further, a puff for applying cosmetics to the skin is accommodated and held in the recess 3 provided on the right side.

  And the cover body 4 which covers the upper opening of the said main-body part 1 is shown in FIG. 4 which is the disassembled perspective view, the hologram frame 7 stuck on the whole upper surface of the cover frame body 6, and the said It is comprised with the cover plate 8 joined and integrated on the upper surface of the lid frame 6 to which the hologram foil 7 was stuck.

  A hinge portion 6a protrudes downward from the rear end portion of the lid frame 6, and the hinge portion 6a engages the rear end portion of the main body portion 1 so that it is indicated by a chain line in FIG. In addition, the lid 4 opens upward. A mirror 5 is attached to the inner side surface of the lid frame 6 (see FIG. 2).

  The cover plate 8 is made of a transparent member made of a transparent acrylic resin molded body, has an aluminum thin film layer 9 on the back surface, and has a non-transparent glossy portion 10 that is glossy when viewed from the front surface. The aluminum thin film layer 9 is intermittently removed by a special method to be described later, and two regions of the semi-transparent portion 11 that appears translucent are provided. And the uneven | corrugated pattern P which combines the large and small recessed part of a regular hexagonal frustum shape and the large and small recessed part of a regular hexagonal pyramid shape is given over the said glossy part 10 and the translucent part 11, This uneven | corrugated pattern P Of the relatively thin regular hexagonal frustum-shaped recess provided in the semitransparent portion 11 is left without being removed, and the small recess P ′ Similar to 11, the inside of the concave portion is intermittently removed to make it translucent.

  The translucent part 11 can be obtained, for example, as follows. That is, first, a mold for shaping the cover plate 8 is prepared. The surface of the mold on the side where the back surface of the lid plate 8 is shaped is also provided with a concavo-convex portion for transferring a concavo-convex pattern made up of large and small regular hexagonal truncated cone-shaped recesses and regular hexagonal pyramid-shaped recesses. ing. Then, the mold is closed by placing the aluminum foil transfer sheet on the side of the mold on which the back surface of the cover plate 8 is shaped, and molding is performed by injecting a resin material (in-mold molding). . Thereby, as shown to Fig.3 (a), integration of the aluminum thin film layer 9 to the back surface side of the cover board 8, and shaping of the cover board 8 to which the uneven | corrugated pattern P was provided can be performed simultaneously. . However, in this state, the entire back surface of the cover plate 8 provided with the concavo-convex pattern P is covered with the aluminum thin film layer 9.

  Therefore, as shown in FIG. 3 (b), the aluminum thin film layer 9 in the region to be the semitransparent portion 11 in the aluminum thin film layer 9 is intermittently vaporized and removed by laser light irradiation. Fine irradiation removal portions T (transparent portions where the transparent resin of the cover plate 8 is exposed) from which the aluminum thin film layer 9 has been removed are dispersed and formed at a fine interval in the above-described region to obtain the translucent portion 11. it can. However, the aluminum thin film layer 9 in the concave portion of the concavo-convex pattern P, which is relatively large, remains aesthetically pleasing.

  For the laser light irradiation, an Nd: YAG laser or the like conventionally used for metal processing or the like can be used. And the processing method and processing conditions which remove thin film layers, such as the said aluminum thin film layer 9, can be suitably selected according to the laser apparatus to be used, the kind of thin film to be removed, etc.

  The formation of the translucent part 11 by the laser light irradiation will be described in more detail. That is, normally, laser light irradiation is performed by continuously evaporating and removing the target area into a concave shape by repeating continuous or intermittent laser light irradiation. In the present invention, as shown in FIG. 5, the laser beam (indicated by the arrow L) is intermittently applied to the semi-transparent portion as shown in FIG. Scan in the direction indicated by thick arrow M. As a result, as shown in FIG. 6A, the semi-transparent scheduled portion of the aluminum thin film layer 9 is intermittently removed in the scanning direction with a predetermined width W to form a large number of fine irradiation removal portions T. Is done. And the translucent part 11 can be obtained by repeating intermittent irradiation, shifting the scanning direction of this laser beam irradiation by small pitch.

  However, the irradiation removal portion T by the laser beam may be a linear shape as shown in FIG. 6B in addition to the rectangular shape as shown in FIG. Also, it may be very small points. To make it possible to clearly recognize that the translucent portion 11 has a clearly higher light transmittance than the non-transparent portion such as the glossy portion 10 and the other side is “translucent”. It is preferable that the width W of the irradiation removal portion T is set to 25 to 100 μm, and the interval S between the adjacent irradiation removal portions T is set to 50 to 500 μm regardless of the vertical and horizontal directions. . That is, if the width W of the irradiation removal portion T and the interval S between the two are out of the above ranges, it may be difficult to control the laser beam irradiation or the semi-transparency may be poor.

  When the translucent portion 11 obtained in this way is viewed from the front surface side, as shown in FIG. 7, the uneven pattern P composed of large and small regular hexagonal frustum-shaped concave portions provided from the back surface side of the cover plate 8 is formed. The patterns are as if the flowers are lined up, and the six tapered sides and bottom in each recess are glossed by the aluminum thin film layer 9 on the back, and the glossy side of each side is It is interesting because it reflects light in different directions. And since the surrounding part is the semi-transparency which has a completely different impression from the said uneven | corrugated pattern P and the glossy part 10 (refer FIG. 1), a glossy part looks clearer by contrast of both.

  The lid plate 8 on which the translucent portion 11 is formed is joined and integrated with the lid frame 6 to which the hologram foil 7 is adhered (see FIGS. 1 and 4). The bonding is performed by applying an adhesive on the upper surface of the hologram foil 7 or the back surface of the cover plate 8 so as not to overlap the translucent portion 11 or using an adhesive tape or the like. Of course, both of them may be joined and integrated by providing engaging portions and engaging each other.

  According to this configuration, the hologram foil 7 underneath can be seen through from the translucent portion 11 of the lid plate 8, and the hologram foil 7 is formed by the fine irradiation removal portion T formed in the translucent portion 11. Because the rainbow-colored light with subtle shadows, it gives an unprecedented beautiful impression. And the uneven | corrugated pattern P of the said translucent part 11 coat | covered with the aluminum thin film layer 9 also becomes a very three-dimensional glossy pattern by the reflective surface in the glossy recessed part. On the other hand, the glossy part 10 has a smooth glossy feeling, and the contrast of the glossy surface and the special translucent part 11 through the hologram foil 7 makes the lid 4 with a very interesting appearance.

  The translucent part 11 and the glossy part 10 are formed from the back side of the transparent cover plate 8, and the surface of the cover plate 8 itself maintains its original smoothness. Will not be worn, damaged or soiled over time. Further, the translucent portion 11 can be easily formed by irradiation with laser light, and has an advantage that it is difficult to lead to a large cost increase and restrictions on a production lot. In addition, the transparency and formation area of the translucent portion 11 can be easily controlled, and the desired quality can be manufactured with high accuracy and high work efficiency.

  Further, the back surface of the cover plate 8 has a number of fine irradiation removal portions T formed in the translucent portion 11, but a very thin aluminum thin film layer 9 remains around the irradiation removal portion T. In the glossy portion 10, the aluminum thin film layer 9 is formed as it is, and furthermore, since it is joined and integrated with the lid frame body 6 to which the hologram foil 7 is adhered, the thickness of each of these members is relatively thin. Even if it is set, the lid 4 as a whole can have high strength, and this portion can be made thin and compact.

  In the above example, the transparent member constituting the cover plate 8 may be any transparent member as long as it is conventionally used for molded products such as containers. Examples thereof include polystyrene, ABS resin, and polycarbonate. And in order to remove the aluminum thin film layer 9 formed on the back surface of the transparent molding surface intermittently and make it semi-transparent, it must be transparent, but it does not need to be colorless and is slightly colored. However, there is no problem as long as the other side can be seen through.

  The aluminum thin film layer 9 integrally formed on the back surface of the cover plate 8 is vapor-deposited, sputtered, plated, hot stamped on the back surface of the cover plate 8 on which a concavo-convex pattern has been formed in addition to in-mold molding. For example, the aluminum thin film layer 9 can be formed integrally with the uneven pattern.

In the present invention, the thin film layer formed on the back surface of the cover plate 8 is not limited to aluminum as in the above example, and may be stainless steel or the like . However, from the viewpoint of smoothness of maintenance of the strength or a thin film layer formation surface, it is necessary to use a metal thin film.

In the above example, the shape of each concave portion constituting the concavo-convex pattern P is a regular hexagonal pyramid shape or a regular hexagonal truncated pyramid shape. Considering that the three-dimensional impression becomes stronger due to the complexity. Thus, and polygonal pyramid shape, when the polygonal frustum shape, the recess surfaces becomes a glossy surface that reflects the different orientations of aluminum thin-film layer 9 on the back surface side, that concave and convex pattern P is obtained rich in interest .

In addition , you may give a recessed part shape from the front side instead of providing a recessed part shape from the back surface side of the cover board 8 like said example. Alternatively, as shown in FIG. 8, it may be possible to provide a concavo-convex pattern Q with a convex shape on the front side.

Further, in the reference embodiment of the present invention , the concave and convex pattern P (Q) is not formed on the cover plate 8, and the non-transparent portion (corresponding to the glossy portion 10 in the above example) whose surface or back surface is covered with a metal thin film layer. ), a semi-transparent portion 11 where the metal thin film layer is finely distributed removed by intermittent irradiation of the laser beam as in the example above, if not originally formed metal thin film layer, completely metal thin film layer is removed Then, the transparent portion where the transparent member is exposed may be combined with an appropriate arrangement and provided with a pattern.

  For example, FIG. 9A is an example in which a pattern in which the non-transparent portion 10 ′ and the translucent portion 11 are combined is formed on the surface of the lid plate 8. Other configurations are the same as those in the above example, and the description thereof is omitted (the same applies hereinafter).

  FIG. 9B shows an example in which the entire surface of the cover plate 8 is formed of a semitransparent portion 11. Although this can also be said to be a semi-transparent pattern, when it is desired to further change, when the semi-transparent portion 11 is formed, the transparency varies depending on the location by appropriately changing the interval of intermittent laser light irradiation. In this way, a gradation pattern with shading can be added.

Further, FIG. 10A shows an example in which a pattern in which a translucent portion 11 and a completely transparent transparent portion 20 are combined is formed, and FIG. 10B shows a non-transparent portion 10 ′ and a translucent portion. This is an example in which the part 11 and the transparent part 20 are combined. These patterns can also be easily obtained by appropriately controlling the metal thin film layer removal pattern by laser light irradiation.

  In the above example, the hologram foil 7 is attached to the lower surface (see the upper surface of the lid frame 6, see FIGS. 2 and 4) seen through the translucent portion 11, and this is attached to the translucent portion 11. However, there is no problem even if the hologram foil 7 is simply sandwiched between the lid frame body 6 and the lid plate 8. Alternatively, the hologram foil 7 may be directly attached to the back side of the cover plate 8 on which the aluminum thin film layer 9 is formed. In this case, it is not necessary to divide the lid body 4 into two members, that is, the lid frame body 6 and the lid plate 8, and a single member can be obtained.

  The same effect can be obtained by using a glossy sheet whose color tone changes depending on the viewing angle, such as an aurora tone sheet or an opal tone sheet, instead of the hologram foil 7. Furthermore, instead of these glossy sheets, simple colored sheets may be used. In addition, it may replace with sticking the said colored sheet | seat and may make it form a colored layer by applying a colored coating material. Alternatively, without using the hologram foil 7 or a colored sheet, or forming a colored layer or the like, the color of the member itself below or the color of the contents accommodated in the container can be shown from the translucent portion 11. But it doesn't matter.

  In the case of using the hologram foil 7 or the colored sheet, they may be opposed to each other with a certain space, instead of directly contacting the back surface side of the cover plate 8. For example, as shown in FIG. 11, as in the above example, in a compact container or the like having a lid 4 ′ having a semi-transparent portion 11 and an inner lid 30, the hologram is placed on the inner lid 30. The same effect as in the above example can be obtained only by sandwiching the foil 7 or the colored sheet. Moreover, as shown in FIG. 12, the hologram foil 7 or a colored sheet may be directly attached to the upper surface of the inner lid 30 or a colored layer may be formed.

Furthermore, in the above example, the aluminum thin film layer 9 is formed on the back surface side of the lid plate 8, but a metal thin film layer such as the aluminum thin film layer 9 is formed on the surface side of the lid plate 8, The laser beam can be intermittently irradiated from the surface side, and at least a part of the specific region can be the translucent portion 11.

It is a perspective view of one Example of this invention. It is XX 'sectional drawing of FIG. (A) is explanatory drawing of the formation method of the uneven | corrugated pattern in the said Example, (b) is explanatory drawing of the formation method of the translucent part in the said Example. It is a disassembled perspective view of the cover body in the said Example. It is detailed explanatory drawing of the formation method of the translucent part in the said Example. (A) is explanatory drawing of the translucent part in the said Example, (b) is explanatory drawing of the modification. It is explanatory drawing of the cover plate in the said Example. It is explanatory drawing of the cover plate in the other Example of this invention. (A), (b) is explanatory drawing of the cover plate in the reference example of this invention, respectively. (A), (b) is explanatory drawing of the cover plate in the other reference example of this invention, respectively. It is explanatory drawing of the other Example of this invention. It is explanatory drawing of other Example of this invention.

4 Lid 10 Glossy part 11 Translucent part

Claims (4)

A transparent member of resin material formed by injection molding using a mold, by transferring the concave-convex portion for shaping of the die, formed by combining a plurality of recesses or protrusions of the polygonal pyramid shape or a polygonal pyramid shape A molded body having a molding surface provided with a concavo-convex pattern and a metal thin film layer formed on at least a part of the front surface or the back surface of the molding surface is prepared, and the concavo-convex pattern is configured in the metal thin film layer. The region A surrounding at least a part of the recesses or projections is scanned while intermittently irradiating laser light, and the metal thin film layer in the region A is irradiated and removed at fine intervals, thereby making the region A translucent to together, surrounded in this region a, with a compact container translucent pattern, characterized in that to leave the recesses or protrusions of a part at least constitutes the uneven pattern as nontransparent glossy portion Preparation of forms.   The irradiation removal portion formed by the intermittent irradiation of the laser beam is set to be a fine line or a dot having a width of 25 to 100 μm, and the interval between the irradiation removal portions adjacent to each other is set to 50 to 500 μm. A process for producing a molded article with a translucent pattern for a compact container according to 1. A molded article obtained by the method according to claim 1, wherein a transparent member of resin material formed by injection molding using a mold, by transferring the concave-convex portion for shaping of the die, polygonal pyramid shape Alternatively, the metal has a molding surface provided with a concave-convex pattern formed by combining a plurality of concave or convex polygonal frustum-shaped concave portions or convex portions, and a metal thin film layer formed on at least a part of the front surface or the back surface of the molding surface, Of the thin film layer, the region A surrounding at least a part of the recesses or projections constituting the concavo-convex pattern is semi-transparent by being irradiated and removed at fine intervals by intermittent irradiation of the scanned laser beam, the region surrounded by a, the uneven pattern recesses or projections of the at least constituting part of the non-transparent compact container, characterized in that remains a glossy portion translucent textured moldings.   4. The compact according to claim 3, wherein the irradiation removal portion formed by the intermittent irradiation of the laser beam is a fine line or dot having a width of 25 to 100 [mu] m, and the interval between the irradiation removal portions adjacent to each other is 50 to 500 [mu] m. Molded body with translucent pattern for containers.

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