JP5361154B2 - Method for producing decorative molded body and decorative molded body obtained thereby - Google Patents

Description

  The present invention relates to a method for producing an excellent decorative molded body capable of forming uneven patterns having a wide variety of impressions, and a decorative molded body obtained thereby.

  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. In order to meet such a requirement, for example, a compact container with a concave / convex pattern on the lid is on the market.

  As a method for imparting an uneven pattern to the lid portion of the compact container, conventionally, it has been common to form irregularities for providing an uneven pattern on the inner peripheral surface of a mold for forming the lid portion. However, in this method, it is difficult to give a fine concavo-convex pattern, and in order to manufacture a wide variety of designs, it is necessary to prepare molds for the number of designs. There is a problem that the cost is high.

Therefore, as a simpler method, a method has been proposed in which a film with a concavo-convex pattern is placed in a mold and the concavo-convex pattern is transferred to the lid by in-mold molding (see Patent Document 1). In addition, a method for mass-producing different types of concavo-convex molded products by sequentially feeding a film with a strip-shaped concavo-convex pattern formed with concavo-convex patterns of different designs in the longitudinal direction into a thin mold (patent) Reference 2).
JP-A-6-72013 JP 2006-187938

  However, as in Patent Documents 1 and 2 above, those using a film with a concavo-convex pattern are simple, but it is difficult to give a fine concavo-convex pattern as in the case of shaping with a mold. There is a limit to the design that can be done. In addition, since a concavo-convex pattern film must be prepared in advance, there is a problem that it is not possible to provide a product according to customer needs in a short period of time or to cope with a sudden specification change.

  The present invention has been made in view of such circumstances, and can be easily formed at a low cost with a wide variety of impression patterns, and can be flexibly changed in its specifications. The object is to provide a method for producing a decorative molded body and a decorative molded body obtained thereby.

In order to achieve the above object, the present invention comprises a step of preparing a molded body having a transparent layer made of a transparent member, and a surface of the transparent layer having a width of 25 to 25 by irradiating one surface of the transparent layer with a CO ₂ laser. forming a fine concave pattern by forming a linear or point-like molten removing traces of 100 [mu] m, the fine concave pattern forming surface of the transparent layer, the transfer sheet colored layer having a metallic gloss is provided The colored layer is transferred, or at least a colored member having a colored layer having a metallic luster formed on the surface thereof is disposed so that the colored surface having the metallic luster is overlapped with the fine concave pattern forming surface of the transparent layer. And a step of overlapping the colored layer with the colored surface facing the fine concave pattern forming surface and leaving a gap between the fine concave pattern and the concave portion. The first key Let ’s do it.

Further, the present invention provides a decorative molded body obtained by the production method is the above first aspect, a transparent layer made of a transparent member, its transparent layer one side, width 25 by irradiation of CO ₂ laser A 100 μm linear or dotted melt removal trace is formed, thereby forming a fine concave pattern, and a colored layer having a metallic luster on the fine concave pattern forming surface has the colored surface described above. From the surface of the transparent layer opposite to the surface on which the colored layer is superimposed, the colored layer is overlapped with the fine concave pattern forming surface facing the concave surface of the fine concave pattern. A decorative molded body in which the surface and the fine concave pattern can be seen through is referred to as a second gist.

In the present invention, a fine concave pattern is formed by irradiating one surface of a transparent layer with a CO ₂ laser and partially removing the surface of the transparent layer. Further, a concave portion of the fine concave pattern is formed on the fine concave pattern forming surface. The colored surface of the colored layer transferred from the transfer sheet or the colored layer of the colored layer formed on the colored member is overlapped so that it can be seen through from the opposite side. According to this manufacturing method, the fine concave pattern that can be seen through overlaps the colored surface and is recognized as a very shaded uneven pattern, which is impressive.

  Moreover, in the present invention, the fine concave pattern can be formed in one step of laser irradiation, and the labor and cost of manufacturing can be greatly reduced. And, by combining the laser irradiation setting conditions, the color of the colored layer, etc. as appropriate, it is possible to give a fine concave pattern with a completely different impression. Has the advantage of being able to.

Then, in particular, by irradiation of the CO ₂ laser, to form a linear or point-like molten removing traces of width 25~100μm the transparent layer surface, since thereby so that to form a fine concave pattern, the conventional of, Ki out to impart a fine pattern could not be realized by shaping using a mold or uneven patterned films, especially it is possible to obtain a decorative molded body rich interest.

In particular, since the colored layer has a metallic luster as the colored layer , the reflected light of the gloss is reflected on the concave and convex surface of the fine concave pattern, resulting in a more complicated three-dimensional pattern. The decorative molded body which can be obtained and is more interesting can be obtained.

  Next, the best mode for carrying out the present invention will be described. However, the present invention is not limited to this embodiment.

  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 partially exploded perspective view thereof. 3 is a cross-sectional view taken along the line XX ′ of FIG. In these drawings, reference numeral 1 denotes a main body, and as shown in FIG. 3, cosmetics such as a foundation are accommodated and held in a concave portion 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 comprised with the cover frame body 6 and the cover board 7 fitted and integrated with the upper surface of the cover frame body 6, as shown in FIG. Has been.

  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. 3).

  The lid plate 7 includes a transparent layer 8 made of a transparent acrylic resin molded body and a colored layer 9 having a metallic luster formed on the back surface thereof, and overlaps the colored layer 9 of the transparent layer 8. On the surface, a fine concave pattern P is formed, which is composed of a lattice pattern and decorative characters designed with the alphabet “D”. The colored surface of the colored layer 9 and the fine concave pattern P can be seen through from the surface side of the transparent layer 8.

  The lid plate 7 on which the fine concave pattern P is formed can be manufactured as follows, for example. That is, first, a transparent acrylic resin, which is a material for forming the transparent layer 8, is injection-molded using a mold for shaping the cover plate 7, and as shown in FIG. Get 7.

Next, as shown in FIG. 4B, the back surface of the transparent layer 8 is irradiated with CO ₂ laser to melt and remove the portion where the fine concave pattern P is to be formed, thereby creating the fine concave pattern P. . At this time, the irradiation condition of the CO ₂ laser is controlled according to a program inputted in advance.

  Then, as shown in FIG. 5, the colored layer 9 is formed from a transfer sheet in which an aluminum vapor-deposited layer having a metallic luster is provided as a colored layer 9 for transfer on the surface of the transparent layer 8 where the fine concave pattern P is formed. Transcript. In this way, the cover plate 7 on which the fine concave pattern P is formed and the colored layer 9 is formed on the surface can be obtained.

  According to this configuration, the fine concave pattern P formed on the back surface of the transparent layer 8 and the colored surface of the colored layer 9 that overlaps the transparent layer 8 can be seen through, giving a three-dimensional impression. A rough pattern can be obtained.

In addition, the fine concave pattern P is formed from the back surface side of the transparent layer 8, and the surface of the transparent layer 8, that is, the surface of the lid plate 7 itself is maintained in smoothness. Wear and damage, and dirt does not accumulate in the concave shape, resulting in poor appearance. Further, the fine concave pattern P can be easily formed by irradiation with a CO ₂ laser, and has an advantage that it does not cause a significant increase in cost and restrictions on production lots.

Furthermore, by combining the setting conditions for CO ₂ laser irradiation and the color of the colored layer 9 as appropriate, a fine concave pattern P with a completely different impression can be imparted. Has the advantage that can be delivered. Therefore, for example, the customer can select and order a favorite combination from a large number of patterns and characters prepared in advance and the color of the colored layer 9, and this can be used as an original compact container only for the customer for a short period of time. It is possible to adopt a bespoke system that delivers products at

  In the above example, the transparent member that constitutes the transparent layer 8 of the cover plate 7 may be any transparent member that has been conventionally used for molded products such as containers. Other examples include polypropylene (PP), polystyrene (PS), ABS resin, polycarbonate (PC), and the like. These must be transparent in order to see through the fine concave pattern P and the colored layer 9 formed on the back side, but need not be colorless and can be seen through the other side even if they are slightly colored. If so, there is no problem.

Moreover, since the impression of the melt removal trace caused by the CO ₂ laser irradiation is somewhat different depending on the type of the resin member constituting the transparent layer 8, it is desirable to select the type of resin member corresponding to the fine concave pattern to be applied. For example, when a resin such as acrylic resin or polyethylene terephthalate (PET) is used, the notch of the concave portion of the melt removal trace becomes a sharp edge, so when applying the fine concave pattern P of the design utilizing the sharp line, It is preferable to use these resins. In addition, when a resin such as ABS resin, acrylonitrile-styrene resin (AS), PP, or the like is used, the recesses in the melt removal traces are gently cut, and the corners around the recesses rise slightly, so a relatively gentle line is formed. . Therefore, when a fine concave pattern P having a gentle impression design is applied, it is preferable to use these resins.

Furthermore, in the above example, the colored layer 9 superimposed on the surface of the transparent layer 8 on which the fine concave pattern P is formed was transferred from the transfer sheet, but the material of the colored layer 9 is particularly limited. Instead, any colored layer 9 conventionally used for decorating a molded body may be used. That is, a hologram sheet, a metal foil, etc. are used besides a simple colored transfer sheet (film) . Its to the color of the colored layer 9 is not limited to a single color, no problem even in the color pattern consisting of two or more colors colors.

However, the color of the colored layer 9 needs to be a color having a metallic luster as in the above example in order to make the fine concave pattern P of the transparent layer 8 stand out three-dimensionally. This is because the light reflected by the metallic luster strikes the concave and convex surface of the fine concave pattern P and becomes a more complicated reflected light to form a shadow.

  In addition, as described above, the colored layer 9 is not directly formed on the surface of the transparent layer 8 on which the fine concave pattern P is formed, but a colored member is prepared separately from the transparent layer 8 and the colored surface is formed on the transparent surface. You may make it overlap with the fine concave pattern P formation surface of the layer 8. More specifically, for example, as shown in FIG. 6 (a), the lid plate 7 is formed only of the transparent layer 8 on which the fine concave pattern P is formed, and the lid plate 6 (FIG. 2). The colored sheet 10 having the colored layer 9 formed on at least the surface of the colored sheet 10 may be sandwiched. In FIG. 6A, the colored sheet 10 has a two-layer structure in which the colored layer 9 is formed on the support layer 9 ′. However, the structure of the colored sheet 10 is particularly limited. However, a single layer sheet may be used. In addition, a double-sided coloring sheet may be used so that the front side color and the back side color are properly used.

  Alternatively, as described above, the colored sheet 10 is not sandwiched, but the colored layer 9 is transferred, vapor-deposited, sputtered, plated, hot stamped on the surface of the lid frame 6 as shown in FIG. You may make it form directly by various methods, such as coating and in-mold shaping | molding. In this configuration, when the above-mentioned “custom-made system” is applied, it is preferable to prepare a predetermined number of lid frames 6 of different colors so that the customer can select them.

  Accordingly, in the present invention, the “coloring member” is not limited to being completely independent as the “member” but includes the transparent layer 8 and the colored layer 9 integrally formed on the lid frame 6. is there.

In the present invention, the degree of "fine" fine concave pattern P formed by irradiation of CO ₂ laser, normal, hard realized by shaping with excipients or transfer sheet with a die width 25 to 100 m, it is necessary a fineness of pattern formed by the concave working depth 25 to 500 [mu] m, made it a range indicating the superiority of the present invention. Then, the fine concave pattern P is designed on and processing efficiency on, that forms continuously or intermittently form the molten removed traces of linear or punctiform width 25 to 100 m (or including a combination thereof) obtained by Ru.

  In these examples, the present invention is applied to a compact container. However, the molded body to which the present invention is applied is not limited to the container, and various resin molded bodies, or other members are combined with the resin molded body. The molded body is not particularly limited. For example, it can be widely applied to mobile phones, stationery, home appliances, various cases, and the like.

It is a perspective view of one Example of this invention. It is a disassembled perspective view of the cover body in the said Example. It is XX 'sectional drawing of FIG. (A), (b) is explanatory drawing of the formation method of the cover plate with a fine concave pattern in the said Example. It is explanatory drawing of the formation method of the cover plate with a fine concave pattern in the said Example. (A), (b) is explanatory drawing of the other Example of this invention.

Explanation of symbols

4 Lid 7 Lid 8 Transparent layer 9 Colored layer P Fine concave pattern

Claims (2)

A step of preparing a molded body having a transparent layer made of a transparent member, and irradiating one surface of the transparent layer with a CO ₂ laser to form a linear or dotted melt removal trace having a width of 25 to 100 μm on the surface of the transparent layer. forming a fine concave pattern by forming, fine recessed pattern formation surface of the transparent layer, or a transfer sheet colored layer having a metallic gloss is provided to transfer the colored layer, at least on its surface By arranging the colored member on which the colored layer having the metallic luster is formed such that the colored surface having the metallic luster is overlapped with the fine concave pattern forming surface of the transparent layer , the colored layer is disposed on the colored surface. A method for producing a decorative molded body, comprising: a step of facing a fine concave pattern forming surface and overlapping the fine concave pattern with a gap left between the concave portions of the fine concave pattern. A decorative molded body obtained by the manufacturing method according to claim 1, wherein the molded body has a transparent layer made of a transparent member, and the transparent layer has a linear or dotted shape having a width of 25 to 100 μm by irradiation with a CO ₂ laser. A melt removal mark is formed, thereby forming a fine concave pattern, and a colored layer having a metallic luster on the surface of the fine concave pattern is formed so that the colored surface faces the surface of the fine concave pattern. In addition, the colored surface and the fine concave pattern are seen through from the surface of the transparent layer opposite to the surface on which the colored layer is superimposed, with a gap left between the concave portions of the fine concave pattern. A decorative molded body characterized by being visible.

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