JP2019111675A - Decorative molded body with notch pattern and manufacturing method therefor - Google Patents

Abstract

To provide a decorative molded body with a notch pattern having a beautiful notch pattern continued over a plurality of faces in a molded body having the plurality faces with different arrangement each other, and a manufacturing method therefor.SOLUTION: A molded body has a base body 10 having a top surface part 2, a front surface part 3, a back surface part 4, and right and left side surface part 5 and 6, a metal thin film layer 12 formed on a surface of the base body 10, and a notch pattern R by partially notching the metal thin film layer 12, in which at least a part of the notch pattern R is formed as a continuous pattern at an arrangement over at least 2 surfaces of each surface part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a notch-pattern-added decorative molded article in which a continuous notch pattern is formed across the continuous first and second surfaces of a molded article, and a method of manufacturing the same.

  Compact containers and lipstick containers containing cosmetics are required not only to have functionality but also to have a design that looks good and reflects the image of a product. In order to meet such requirements, for example, a metal thin film layer is formed by aluminum deposition or the like to give metallic gloss to the lid of a compact container, or a transfer sheet on which a complex color pattern is printed is attached. There have been proposed a variety of containers and the like that make use of various techniques to enhance the eye catch effect of the container appearance.

  Also, recently, in order to give a more complicated pattern, a part of the metal thin film layer and the transfer sheet is removed by laser irradiation, and the removed portion is formed on the ground portion or the ground portion of the container. The colored layer is exposed to form characters and patterns (see, for example, Patent Document 1). Furthermore, after forming a concavo-convex pattern on the surface of the molded body in advance and forming a covering layer such as a metal thin film layer thereon, the covering layer is partially removed by laser irradiation in accordance with the concavities and convexities of the concavo-convex pattern. It has been proposed to obtain a more impressive asperity pattern (see, for example, Patent Document 2).

JP 2007-216417 A JP, 2006-334122, A

  By the way, such surface decoration usually assumes that the surface of the molded body is a flat surface or a very gentle curved surface. That is, if the warp of the target surface to be decorated is large or it is an uneven surface, the transfer sheet can not be attached cleanly, and a beautiful decoration can not be provided. In addition, it is not possible to provide a continuous decorative pattern across two or more surfaces, such as the top surface and the side surface of the lid.

  And also when forming a decoration pattern by partially removing a coating layer by laser irradiation, if a processing surface is a curved surface, an uneven surface, or a field which straddles a plurality of surfaces, to which surface it faces to which direction However, since it is difficult to perform laser irradiation accurately, it is not possible to obtain a beautiful decorative pattern because the pattern is partially blurred or loses its shape. Even if laser irradiation is performed on the first surface to change the direction and laser irradiation is performed on the second surface in order to form a continuous pattern that spans two surfaces, the patterns are necessarily shifted at the joint. There is a problem of

  The present invention has been made in view of such circumstances, and in a molded article having a plurality of faces different in arrangement, a beautiful notch pattern is continuously formed across a plurality of faces different in the arrangement. It is an object of the present invention to provide a notched pattern-added decorative molding and a method for producing the same.

  In order to achieve the above object, according to the present invention, a first surface having a specific arrangement with respect to a virtually set rotation center axis P and a first surface connected to the first surface with respect to the rotation center axis P A metal thin film formed directly or through another layer on a base body having a second surface different from the first surface, and at least on the first surface and the second surface of the base body A layer, the metal thin film layer is partially notched to have a notch opening, and the notch pattern R is formed by exposing the surface of the base body or another layer from the notch opening. A decorative molded body, wherein at least a part of the notch pattern R is a first surface of the base body in a direction along the rotational movement direction when the base body is rotated about the rotational center axis P. Formed as a continuous pattern in an arrangement that straddles the second face The cutout pattern adds decorative moldings that the first aspect.

  Further, according to the present invention, in particular, the concavo-convex pattern Q is formed in the arrangement straddling the first surface and the second surface of the base body, and overlaps with at least a part of the concavo-convex pattern Q. A second aspect of the present invention is a notch pattern added decorative molded body in which at least a part of the notch pattern R is formed in an arrangement straddling the first surface and the second surface.

  Further, according to the present invention, a first surface having a specific arrangement with respect to the virtually set rotation center axis P and a first surface continuous with the first surface and different from the first surface with respect to the rotation center axis P Preparing a base body having a metal thin film layer formed directly or through other layers on at least the first surface and the second surface of the base body, having a second surface to be arranged; Laser irradiation is performed on a predetermined portion of the metal thin film layer, the metal thin film layer is partially removed to form a notch opening in the metal thin film layer, and the surface of the base body or another layer is exposed from the notch opening. And forming the metal thin film layer in the step of obtaining the notch pattern R, the base body having the metal thin film layer formed thereon in the step of obtaining the notch pattern R. The metal thin film layer is held rotatably around the axis P By performing laser irradiation while rotating the base body continuously or intermittently, cutting at least a part of which becomes a continuous pattern in the arrangement straddling the first surface and the second surface of the base body The manufacturing method of the notch pattern addition decorative molding which forms notch pattern R is made into the 3rd summary.

  Furthermore, according to the present invention, in particular, in the step of preparing the base body, the concavo-convex pattern Q is formed so as to extend across the first surface and the second surface of the base body. In the step of preparing a base body having a metal thin film layer formed directly or through another layer on the first surface and the second surface, and obtaining the notch pattern R, at least a part of the uneven pattern Q A fourth aspect of the present invention is a method of manufacturing a notch pattern-added decorative molding that forms at least a part of the notch pattern R in an arrangement overlapping with the above.

  And, among them, particularly in the step of preparing the base body on which the metal thin film layer is formed, the present invention uses a mold for molding the base body, and at least a first surface of the mold and A fifth method of manufacturing a notch pattern-added decorative molded article, wherein a base body is formed in a state where a metal thin film sheet is disposed on a forming surface for forming a second surface, and a metal thin film layer is obtained by the metal thin film sheet. It is a summary.

  In the present invention, “a continuous pattern” is not only a literally continuous pattern in which a pattern straddling the first surface and the second surface is connected seamlessly, but also a portion interrupted in the middle thereof The idea is to include a group of patterns that appear to be continuous as a whole.

  That is, the notch-pattern-added decorative molding of the present invention comprises a base body having a first surface different in arrangement, and a second surface continuous with the first surface and different in arrangement from the first surface. And a metal thin film layer formed directly or through another layer on the first surface and the second surface of the base body. Then, at least a portion of the notch pattern R in which the metal thin film layer is partially cut away is a first one of the first base body in a direction along the rotation direction when the base body is rotated in a specific direction. It is formed as a continuous pattern in an arrangement that straddles the face and the second face.

  According to this configuration, conventionally, although a notch pattern in a single plane or a plurality of independent notch patterns in a plurality of planes are individually provided, a series of continuous lines across at least two planes. Since the notch pattern R is given, it is a highly decorative shaped molded body full of a sense of unity as a whole that has never been seen before. Therefore, the notch-pattern-added decorative molding of the present invention has a high eye-catching effect in the market, and can enhance the added value of goods using this notch-pattern-addition decorative molding.

  And among the present invention, in particular, the concavo-convex pattern Q is formed in the arrangement straddling the first surface and the second surface of the base body, and overlaps with at least a part of the concavo-convex pattern Q. The notch-pattern-added decorative formed article in which at least a portion of the notch pattern R is formed in an arrangement straddling the surface and the second surface is at least a portion of a portion where the notch pattern R is formed. Since the concavo-convex pattern is given to the two-dimensional pattern, the three-dimensional shadow is generated by the concavo-convex pattern Q and the notch pattern R in combination, and the more striking appearance is obtained.

  Further, the manufacturing method of the present invention is a method for obtaining the above-mentioned notched pattern added decorative molded body, and in the step of forming the above notched pattern R, the base body on which the metal thin film layer is formed The laser irradiation is performed while continuously or intermittently rotating the base body on which the metal thin film layer is formed while holding the base body rotatably as a center, at least a part of the base body and the first surface of the base body A notch pattern R which forms a continuous pattern in the arrangement across the two surfaces is formed.

  According to this manufacturing method, the base body on which the metal thin film layer is formed is rotated along the virtually set rotation center axis P, and cut continuously from the first surface to the second surface. In order to form the notch pattern R, the notch processing can be performed with the target surface on which the notch pattern R is to be formed always (or approximately always) directed in the laser irradiation direction. Therefore, a continuous pattern extending from the first surface to the second surface can be formed without causing distortion or omission of the pattern, and a beautiful notch pattern R can be obtained.

  Further, among the manufacturing method of the present invention, in the step of preparing the base body, in particular, the concavo-convex pattern Q is formed in the arrangement straddling the first surface and the second surface of the base body. In the step of preparing a base body having a metal thin film layer formed directly or through another layer on the first surface and the second surface, and obtaining the notch pattern R, at least a part of the uneven pattern Q In the arrangement in which at least a portion of the notch pattern R is formed, the uneven pattern Q and the notch pattern R are continuously overlapped in the arrangement across the first surface and the second surface. An impressively shaped decorative molding can be easily obtained, which is preferable.

  Further, among them, particularly in the step of preparing the base body on which the metal thin film layer is formed, a mold for molding the base body is used, and at least the first surface and the second surface of the mold. The base body is formed in a state where the metal thin film sheet is disposed on the forming surface for forming the metal layer, and the metal thin film layer is obtained by the above metal thin film sheet by forming the base body and forming the metal thin film layer. Since the process can be performed simultaneously in one step by molding, the manufacturing process can be simplified and the cost can be reduced.

It is a perspective view showing the lid which is one embodiment of the present invention. It is a fragmentary sectional view of the above-mentioned lid. It is an expanded view of the said cover part. It is explanatory drawing which shows an example of the apparatus used in order to form the notch pattern of the said cover part. (A) is explanatory drawing of the formation method of the notch pattern with respect to the said cover part, (b) is a right view of (a), (c) is explanatory drawing of the formation method of the said notch pattern. (A), (b) is explanatory drawing of the formation method of both the said notch pattern. (A) is a perspective view which shows the cover part which is other embodiment of this invention, (b) is a perspective view which shows the form at the time of forming a notch pattern in the said cover part. (A) is explanatory drawing of the formation method of the notch pattern with respect to the said cover part, (b) is a right view of (a), (c) is explanatory drawing of the formation method of the said notch pattern. (A), (b) is explanatory drawing of the formation method of both the said notch pattern. (A) is a perspective view which shows the form at the time of forming a notch pattern in the container main body which is further another embodiment of this invention, (b) is the description of the formation method of the notch pattern with respect to the said container main body. (C) is a right side view of (b). (A) is a perspective view showing a form in which a notch pattern is formed in a state in which the main body and the lid are integrated in another embodiment of the present invention, and (b) is the main body and the lid It is explanatory drawing of the formation method of the notch pattern with respect to integrated products of (c) is a right side view of (b). FIG. 21 is a partial cross-sectional view of a lid using a base body with a concavo-convex pattern in still another embodiment of the present invention.

  Below, the form for implementing this invention is demonstrated. However, the present invention is not limited to the following embodiments.

  FIG. 1 shows an embodiment in which the present invention is applied to a lid 1 of a compact type cosmetic container. The lid portion 1 is a thin concave body having a rectangular shape in a plan view, and as shown in FIG. 3 which is a development view thereof, the top surface portion 2, the front surface portion 3, the back surface portion 4 and the left side surface portion 5 And the right side 6. Although a step for mirror attachment and a projection for hinge connection with the main body of the cosmetic container are provided on the inside of the lid 1, these are general features, and the present invention is not limited thereto. The description is omitted because it is not related to the gist of the invention.

  The lid 1 is made of aluminum on a surface of a base body 10 made of a resin molding colored in black [in this example, acrylonitrile-butadiene-styrene (ABS) resin] through a colorless and transparent undercoat layer 11. A metal thin film layer 12 formed by vapor deposition is formed, and a metallic luster color is given as a whole (see FIG. 2).

  Then, the metal thin film layer 12 is partially cut away, and the transparent undercoat layer 11 is exposed from the cutout opening, and the surface of the black base body 10 below it is transparent and looks black. The notch pattern R by this notch opening is a band-like pattern such as a combination of a wide lace-like ribbon and a narrow string-like ribbon, and the two stripe-like patterns form a diagonal direction of the top surface 2 It is formed to cross.

  Describing in more detail, one of the notch patterns R in the notch pattern R diagonally crosses the top surface 2 from the left side surface 5 of the lid 1 and reaches the front surface 3. The other band-shaped pattern diagonally crosses the top surface 2 from the back surface 4 of the lid 1 and reaches the right side surface 6 (see FIG. 3).

  The two strip patterns, which are notched patterns R, both extend over three planes, but are also continuously formed without interruption at corner portions that are boundaries of each plane. There is. Therefore, it has a beautiful appearance as if a real ribbon is put on the lid 1, and the eye-catching effect is high. This is the main feature of the present invention.

  In this example, the notch pattern R extends over three surfaces (first surface → second surface → third surface) as a strip pattern of two streaks, but the three surfaces are not necessarily required. It is not necessary to span at least a portion of the notch pattern R across at least two surfaces (first surface → second surface). And the notched part of the notched pattern R formed across at least two surfaces is not only a literally continuous pattern connected without interruption, but also as a whole, even if there is an interrupted part in the middle It does not matter if it is a group of patterns that appear to be connected.

  For example, in the case where the boundary between two surfaces is chamfered or rounded, etc., the first surface and the second surface may be cut off without marking the portion. In some cases, the band-like pattern is formed so as to extend continuously across the first and second surfaces. "Continuous pattern" is included.

  The lid 1 can be obtained, for example, as follows. That is, first, using a black ABS resin as a resin material, a base body 10 having a shape to be the lid 1 is prepared. For molding of the base body 10, an appropriate molding method such as injection molding using a mold is used.

  Next, a colorless and transparent resin composition for undercoating is used on the outer surface of the base body 10 (the surface facing the outside of the top surface portion 2, the front surface portion 3, the back surface portion 4 and the left and right side surface portions 5 and 6). The undercoat layer 11 is formed. Then, aluminum is vapor-deposited on the surface of the undercoat layer 11 to form the metal thin film layer 12. Then, laser irradiation is performed on a predetermined portion of the metal thin film layer 12, and as shown in FIG. 2, the metal thin film layer 12 is partially removed to form a notch pattern R (see FIGS. 1 and 3). ). In addition, the removal process of the metal thin film layer 12 by laser irradiation is performed by inputting the data of the position to process beforehand into a laser apparatus, and scanning a laser beam intermittently based on it.

  It is preferable to perform the said laser irradiation, rotating the base body 10 in which the metal thin film layer 12 was formed, for example using an apparatus as shown in FIG. More specifically, this apparatus comprises a work holding portion 21 for holding the base body 10 in an arrangement in which the specific rotation center axis P is the rotation center, a base 22 on which the work holding portion 21 is attached, and the base 22 and a motor 23 for giving a rotational operation. The work holding portion 21 is provided with a support shaft 21 a which is fitted to the inner recess of the base body 10 to hold the base body 10.

  Further, in this example, in view of work efficiency by laser irradiation, the two base bodies 10 are held by the work holding portion 21 in an arrangement that is 180 ° rotational symmetric with respect to the rotation center axis P It is designed to perform laser irradiation processing. Of course, only one base body 10 may be attached to the support shaft 21a and may be machined one by one.

  In the above apparatus, the output unit 24 of the laser device is disposed above the workpiece holding unit 21, and as indicated by the arrow, the laser is vertically directed toward the base body 10 held by the workpiece holding unit 21. Light is to be emitted.

  The formation method of notch pattern R by laser irradiation using the said apparatus is demonstrated concretely. First, as shown in FIG. 5A, two pieces of the base body 10 on which the metal thin film layer 12 is formed are attached to the workpiece holding portion 21 so as to be rotationally symmetric to the central axis P of rotation by 180 °. Hereinafter, the base body 10 disposed on the back side in FIG. 5A and the base body 10 ′ disposed on the front side will be described separately. In the initial state before processing, the base bodies 10, 10 'are arranged such that the top surfaces 2 thereof are vertical. 5 (b) is a right side view of FIG. 5 (a).

  Then, in the arrangement of FIG. 5 (a), the work holding portion 21 is rotated to the front side as shown by the arrow X while performing laser irradiation toward the back surface portion 4 and the left side surface portion 5 of the base body 10 on the back side. Through the arrangement of FIG. 5 (c) where the top surface 2 of the base body 10 is horizontal, the top surface 2 of the base 10 is rotated to the arrangement of FIG. 6 (a) which is vertical on the front side. As a result, the base body 10 is rotated 180 ° around the rotation center axis P, and in the order of the back surface 4 and the left side surface 5 → the top surface 2 → the front surface 3 and the right side surface 6 of the base 10 The laser irradiation is continuously performed, and a notch pattern R composed of two stripes is continuously formed along the rotation direction (the direction indicated by the arrow X) (see FIG. 3).

  Next, in the arrangement of FIG. 6A, laser irradiation is performed on the base body 10 ′ (unprocessed) positioned on the back side toward the back surface portion 4 and the left side surface portion 5 as in the case of the base body 10 described above. The workpiece holding unit 21 is rotated forward as indicated by the arrow X, and rotated to a position rotated 180 ° from the initial position via the arrangement of FIG. 6B. In this manner, the notch pattern R can be formed also on the base body 10 '.

  And base body 10, 10 'can be removed from work holding part 21, and two lids 1 can be obtained. The metal thin film layer 12 on the surface of the obtained lid 1 is partially removed, and a continuous strip pattern from the back surface 4 to the right side surface 6 via the top surface 2 and the left side surface 5 to the top A notch pattern R is formed, which is a series of strip patterns extending to the front part 3 via the face part 2. And since the notch pattern R is continuously formed without interruption at any corner that straddles the two surfaces, the notch pattern R has a very beautiful finish as a whole. There is.

  In particular, the notch openings of the notch pattern R are each formed in a specific direction with respect to the rotational direction X (see FIG. 3) of the base body 10, and the notch pattern R extends in the direction Because it is regular, a delicate pattern reminiscent of a lace with a notch pattern R and a pattern reminiscent of a gently curved string tip are both clearly represented and provide a high eye-catching effect .

  As described above, when laser irradiation is performed while continuously rotating the base body 10 (hereinafter also including 10 ') at 180 °, depending on the design of the notch pattern R, it may be for one laser irradiation. The amount of processed data to be handled may be huge, and it may take a relatively long time for one process.

  Therefore, instead of performing laser irradiation while continuously rotating the base body 10 to form the notch pattern R all at once, the base body 10 is rotated by (180 / n) ° each time to perform n times of laser irradiation. When performed intermittently (for example, the base body 10 is rotated 45 degrees at a time and divided into four times), the amount of processing data handled for one laser irradiation is compared to continuous rotation of 180 degrees. It becomes 1 / n, and it becomes processing continuation processing in a short time. However, since the laser irradiation becomes intermittent, it is necessary to be careful not to shift the notch pattern R at the start point and the end point of the laser irradiation.

  Therefore, depending on the design of the notch pattern R and the required processing amount per unit time, as described above, the laser irradiation may be intermittently performed by dividing into n, or by one rotation operation as described above. It is desirable to selectively use whether the notch pattern R is continuously formed in a series.

  In the above example, the material of the base body 10 is not limited to the ABS resin, and various moldable synthetic resins can be used. Among them, polyethylene terephthalate (PET) resin, polybutylene terephthalate (PBT) resin, acrylonitrile-styrene (AS) resin, polycarbonate (PC), polystyrene (PS), polypropylene (PP), etc. in addition to the above ABS resin. Is preferable in terms of moldability, durability, and lightness. The color of the base body 10 is not limited to black, but is selected according to the design of the entire container, and may be transparent or opaque, or colored or colorless.

  Further, although the metal thin film layer 12 is formed by vapor deposition of aluminum in the above example, the type of metal is not limited to aluminum, and may be a thin film made of another metal material such as stainless steel. In addition, a hologram forming layer, a pearl tone imparting layer, or the like may be further formed on the metal thin film layer 12. In these cases, more complex metallic gloss tones can be obtained and the range of design is broadened. Then, a transparent top coat layer may be provided on the metal thin film layer 12 or on other layers formed thereon.

  Furthermore, the metal thin film layer 12 may not necessarily be formed by metal deposition, and for example, a transfer sheet on which the metal thin film layer 12 is formed may be used. Further, when molding the base body, the metal thin film sheet is disposed in advance on the molding surface of the mold, and the metal thin film layer 12 is integrated on the surface of the base body by molding the base body in that state. Can also be formed.

  Moreover, although the undercoat layer 11 provided between the base body 10 and the metal thin film layer 12 is made colorless in the above-mentioned example, the undercoat layer 11 may be colored. In that case, in the notch pattern R, the inside of the colored undercoat layer 11 is visible from the notch opening of the notch pattern R. In addition, other colored layers and color-patterned layers may be formed in the base body 10 and the undercoat layer 11, and these layers may have a pattern that can be seen through the transparent undercoat layer 11. As the base body 10, a combination of resin materials of two or more colors may be used so that a color pattern appears on the surface, and the color pattern may be shown from the notch opening of the notch pattern R.

In the above example, the laser used to form the notch pattern R is not particularly limited as long as it has a removing action on the metal thin film layer 12, and various lasers may be used. Can. For example, a YAG laser, a YVO ₄ laser, a semiconductor laser or the like is suitably used.

  Furthermore, although the above-described example is an example in which the present invention is applied to the lid 1 of a compact type cosmetic container, for example, it is applied to the lid 31 of a jar type cosmetic container as shown in FIG. You can also This lid 31 is composed of a top surface 32 and a cylindrical side surface 33, and, like the lid 1 shown in FIG. 1, on the surface thereof via the base body 40 and a transparent undercoat layer. And a thin metal film layer 42 to be formed. Then, the metal thin film layer 42 is partially cut away, and a band-like notch pattern R extending from one side of the side surface portion 33 to the other end side of the side surface portion 33 across the top surface portion 32 is formed.

  Similarly to the example of the lid 1 described above, the lid 31 is also exposed to laser light while rotating the base body 40 having the metal thin film layer 42 formed on the surface, using the apparatus shown in FIG. The notch pattern R extending across the surface portion 32 and the side surface portion 33 can be formed.

  More specifically, in this example, in order to hold the base body 40 on which the metal thin film layer 42 is formed, for example, a work holding portion 45 shown in FIG. 7B is used. The work holding portion 45 is provided with a drum-like work fitting portion 46 at the tip of the support shaft 45a, and the base bodies 40 and 40 'are fitted and held on both sides thereof. . The engagement guides 47 are for preventing the base bodies 40 and 40 'from falling off, and two are provided along the side surface of the work fitting portion 46, and the base body 40, An engagement claw 47a is provided to engage with the peripheral portion of the top surface portion 32 of 40 '. In the case where the base body 40 or 40 'is fitted and held in a stable manner with the workpiece fitting portion 46, the engagement guide 47 is not necessarily required.

  As shown in FIG. 8A, the base body 40, 40 'on which the metal thin film layer 42 is formed is attached to the work holding portion 45, and in the initial state before processing, each ceiling body of the base body 40, 40' It arrange | positions so that the surface part 32 may become perpendicular | vertical. 8 (b) is a right side view of FIG. 8 (a).

  Then, in the arrangement of FIG. 8A, the workpiece holding portion 45 is rotated to the front side as shown by the arrow X while performing laser irradiation toward the side surface portion 33 of the base body 40 on the back side, thereby the base body 40 The top surface 32 of the base body 40 is rotated to the arrangement of FIG. 9A, which is vertical on the front side, via the arrangement of FIG. As a result, the base body 40 is rotated by 180 ° around the rotation center axis P, and one side of the side surface portion 33 of the base body 40 → the top surface portion 32 → the other side of the side surface portion 33 is continuous. In the laser irradiation, a band-like notch pattern R is continuously formed along the rotational direction (the direction indicated by the arrow X).

  Next, in the arrangement of FIG. 9A, while irradiating the base body 40 ′ (unprocessed) located on the back side with the laser toward the side surface portion 33 as in the case of the base body 40 described above, The workpiece holding portion 45 is rotated forward as shown by the arrow X, and is rotated to a position rotated 180 ° from the initial position via the arrangement of FIG. 9B. In this manner, the notch pattern R can be formed also on the base body 40 '.

  Then, the base bodies 40 and 40 'can be removed from the work holding portion 45 to obtain two lid portions 31 (see FIG. 7A). The metal thin film layer 42 on the surface of the obtained lid 31 is partially removed, and a continuous strip extending from one side of the side 33 to the other side of the side 33 through the top 32. A notch pattern R is formed. And since the notch pattern R is continuously formed without interruption at any corner that straddles the two surfaces, the notch pattern R has a very beautiful finish as a whole. There is.

  Furthermore, the present invention is applicable not only to the lids 1 and 31 of the cosmetic container but also to the main body of the cosmetic container. For example, as in the case of the lid 1 shown in FIG. 1, the side of the main body of a thin concave concave compact cosmetic container having a rectangular shape in a plan view, for example, using the apparatus shown in FIG. In addition, it is possible to form a notch pattern R which extends continuously along the circumferential direction.

  In more detail, first, as shown in FIG. 10A, the base body 50 having the shape to be the above-mentioned main body portion and the metal thin film layer 52 formed on the surface through the transparent undercoat layer is obtained. prepare. Further, as shown in the drawing, a workpiece holding unit 60 provided with a substantially square columnar workpiece fitting unit 61 is prepared. At the tip end face of the work fitting portion 61, a projection engaged with the recess for accommodating the inner plate of the base body 50 and an engagement engaged with the edge of the notch 50a which becomes the hinge of the base body 50 A pawl 62 and an engagement pawl 63 engaged with the lid opening / closing engagement portion are provided. When the base body 50 is stably fitted and held by the fitting of the base body 50 with the tip end surface of the work fitting portion 61, the engaging claws 62 and 63 are not necessarily required.

  The base body 50 is fitted and held on the tip end surface of the work fitting portion 61, and in this state, the base body 50 is attached to the apparatus shown in FIG. Then, in the initial state before processing, as shown in FIG. 10B, the bottom portion 53 of the base body 50 is vertical, and one side of the side portions 54 is horizontal to receive the laser irradiation. Deploy. 10 (c) is a right side view of FIG. 10 (b).

  In the above arrangement, while the laser irradiation is performed toward one of the side surfaces 54, the workpiece holding unit 60 is rotated to the front as shown by the arrow X, and the arrangement of the side surfaces 54 is sequentially changed 360 Rotate. Thereby, the notch pattern R (not shown) extending continuously can be formed over the entire circumference of the side surface portion 54. Of course, the notch pattern R formed by the laser irradiation does not have to extend over the entire circumference of the side portion 54, as long as it continuously extends over at least two surfaces.

  In addition, as in the case of forming the notch pattern R in the lid 1 shown in FIG. 1, the bottom surface 53 is not vertical, but is inclined from the side surface 54 to the bottom surface 53 by cutting. The notch pattern R may be formed.

  Furthermore, the present invention can be applied to, for example, a cosmetic container of a compact type in which a notch pattern R extending across the main body and the lid is formed. In that case, it is preferable to use, for example, a workpiece holding unit 90 shown in FIG. That is, the work holding portion 90 is a lid base body 70 serving as a lid, and the metal thin film layer 72 is formed on the surface thereof, and the main body base body 80 serving as a main body and the surface thereof It is possible to keep the one in which the thin metal film layer 82 is formed in a closed state, and in that state, it can be attached to the apparatus shown in FIG.

  More specifically, the work holding portion 90 is provided with a flat portion 91 for attaching the lid portion base body 70 and the main portion portion base body 80 closed to each other on the support shaft 90 a. The bottom surface 81 of the main body base body 80 is attached to the mounting surface. Further, engaging claws 92, 93 for retaining the workpiece are formed at two opposing corner portions of the flat portion 91.

  The lid base body 70 and the main body base body 80 are held in a closed state in the work holding portion 90, and in the initial state before processing, as shown in FIG. 11 (b), the two base bodies 70. , 80 of the two side surfaces are perpendicular to each other, and two of the side surfaces are arranged to receive the laser irradiation. 11 (c) is a right side view of FIG. 11 (b).

  Then, in the arrangement of FIG. 11B, while performing laser irradiation toward the side surface portions of the base bodies 70 and 80, the work holding portion 90 is rotated to the front side as shown by the arrow X, and Next, laser irradiation is performed on the top surface 71 of the lid base body 70, and rotation is performed, and laser irradiation is also performed on the opposite side surface portions of the two base bodies 70 and 80. In this manner, in the state where the lid base body 70 and the main body base body 80 are closed, it is possible to continuously form the notch pattern R (not shown) extending over both. Of course, the notch pattern R formed by the laser irradiation does not have to be continuously formed in a whole in a row, but continuously across at least two surfaces (the first surface and the second surface). It may be extended.

  Then, in the above series of examples, the metal thin film layer 12 (including 42 and the like) is formed on the base body 10 (including 10 'and the like) having a flat surface, and the metal thin film layer 12 is partially removed and cut. For example, as shown in FIG. 12, a concavo-convex pattern Q is provided on the surface of the base body 10, and an undercoat layer 11 is optionally provided thereon as shown in FIG. After forming the metal thin film layer 12, the notch pattern R may be formed.

  Although the above-mentioned concavo-convex pattern Q can be given at the time of molding such as injection molding, the concavo-convex pattern Q is formed across at least two surfaces, and the notch of the present invention is overlapped with at least a part of the concavo-convex pattern Q When forming the pattern R, for example, using the same apparatus (refer to FIG. 4) as that used in forming the above-mentioned notch pattern R, the base body 10 is continuously made centering around a specific rotation center axis P. It is preferable to form the uneven pattern Q continuously by performing laser irradiation while rotating intermittently. That is, according to this method, it is possible to accurately form the concavities and convexities of the concavo-convex pattern, and it is possible to obtain a fine and beautiful concavo-convex pattern Q.

  In particular, in the case where the unevenness of the above-mentioned unevenness pattern Q is a design which can not be obtained clearly because of the draft, the unevenness pattern Q as designed can be easily obtained without using a complicated mold, It is suitable. In addition, when forming the concavo-convex pattern Q by laser irradiation, the processing data can be used as processing data when forming the notch pattern R, and therefore, with respect to the concavo-convex pattern Q without complicated adjustment. The notch pattern R can be formed in a proper arrangement.

In addition, as a laser for forming the said uneven | corrugated pattern Q, if it has a fusion removal effect | action with respect to resin, it will not be specifically limited, A various laser can be used. For example, a CO ₂ laser, an excimer laser, a semiconductor laser, etc. may be mentioned. Among them, a CO ₂ laser is preferable in terms of controllability and finish.

  In the present invention, the rotation center axis P when rotating the base body 10 to form the notch pattern R takes into consideration the design of the notch pattern R and the three-dimensional shape of the base body 10 each time , Is set virtually. Although the distance between the laser light source and the surface to be machined by laser irradiation changes with the rotation operation, it is important to set the width of the change in the distance within the adjustment range of the focal distance by laser irradiation. .

  The present invention is not limited to the cosmetic container of the compact type or the jar type, but various resin moldings that require a beautiful decoration with a notch pattern R extending from the first surface to the second surface are required. It is widely applicable to goods. For example, the present invention can be applied to mobile phones, stationery, home appliances, toys, various cases, and the like.

  INDUSTRIAL APPLICABILITY The present invention can be used for an attractively decorated molded body in which a beautiful notch pattern is formed continuously or intermittently across two surfaces, and a method for producing the same.

Reference Signs List 1 lid portion 2 top surface portion 3 front surface portion 4 back surface portion 5 left side surface portion 6 right side surface portion 10 base body 12 metal thin film layer R notch pattern

Claims (5)

A first surface which is a specific arrangement with respect to the virtually set rotation center axis P, and a second surface which is continuous with the first surface and is different from the first surface with respect to the rotation center axis P And a metal thin film layer formed directly or through another layer on at least the first surface and the second surface of the base body, and the metal thin film layer is partially formed. A decorative molded body having a notch opening R and a notch pattern R formed by exposing a surface of a base body or another layer from the notch opening.
At least a portion of the notch pattern R straddles the first surface and the second surface of the base body in the direction along the rotational movement direction when the base body is rotated about the rotational center axis P. A notch-pattern-added decorative molding characterized in that the arrangement is formed as a continuous pattern.   The concavo-convex pattern Q is formed so as to straddle the first surface and the second surface of the base body, and overlaps at least a part of the concavo-convex pattern Q so as to straddle the first surface and the second surface. The notch-pattern-added decorative molding according to claim 1, wherein at least a part of the notch pattern R is formed. A first surface which is a specific arrangement with respect to the virtually set rotation center axis P, and a second surface which is continuous with the first surface and is different from the first surface with respect to the rotation center axis P Preparing a base body having a surface, wherein a metal thin film layer is formed on at least the first surface and the second surface of the base body directly or through another layer; A portion of the thin film metal layer is partially removed by laser irradiation to form a notch opening in the metal thin film layer, and the notch pattern R is formed by exposing the surface of the base body or the other layer from the notch opening. Producing a notched imitation decorative molding having a step of obtaining
In the step of obtaining the notch pattern R, the base body on which the metal thin film layer is formed is rotatably held about the rotation center axis P, and the base body on which the metal thin film layer is formed is continuous or discontinuous. By irradiating the laser while rotating it in a rotating manner, at least a part thereof forms a notch pattern R which becomes a continuous pattern in an arrangement that straddles the first surface and the second surface of the base body. Manufacturing method of notched pattern added decorative molding to be used.   In the step of preparing the base body, a concavo-convex pattern Q is formed in an arrangement straddling the first surface and the second surface of the base body, and directly on at least the first surface and the second surface of the base body. Alternatively, in the step of preparing a base body on which a metal thin film layer is formed through another layer, and obtaining the notch pattern R, at least a portion of the notch pattern R is overlapped with at least a part of the concavo-convex pattern Q. The manufacturing method of the notch pattern addition decoration molded object of Claim 3 which forms a part.   In the step of preparing the base body on which the metal thin film layer is formed, a mold for molding the base body is used, and on the shaping surface for forming at least the first surface and the second surface of the mold. The method for producing a notched-pattern-added decorated molding according to claim 3 or 4, wherein the base body is formed in a state where the metal thin film sheet is disposed, and a metal thin film layer is obtained by the metal thin film sheet.

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