JP2019111676A - Concave-convex pattern added decorative molded article and method for producing the same - Google Patents

Abstract

To provide a concave-convex pattern added decorative molded article in which a consecutive beautiful concave-convex pattern is formed across a plurality of surfaces, and a method of manufacturing the same in a molded article having a plurality of surfaces different in arrangement from one another.SOLUTION: There is provided a molded article 10 having a top surface portion 2, a front surface portion 3, a back surface portion 4, and left and right side surface portions 5 and 6. The surface of a base body has an uneven pattern Q which is partially removed. At least a part of the concave-convex pattern Q is formed as a continuous pattern so as to be disposed across at least two surfaces of each surface portion of the molded body 10.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a concavo-convex pattern-added decorative molded article in which a continuous concavo-convex pattern is formed across first and second continuous 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.

  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 planes having different layouts, a beautiful uneven pattern is continuously formed across a plurality of planes having different layouts. It aims at provision of a concavo-convex pattern addition decoration molding and its manufacturing method.

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 molded body having a second surface which is arranged differently from the first surface,
On the surface of the molded body, there is provided a concavo-convex pattern Q constituted of a concave portion formed continuously or intermittently and a portion where the concave portion is not formed, and at least a part of the concavo-convex pattern Q is In a direction along the rotational movement direction when the formed body is rotated about the rotation center axis P, it is formed as a continuous pattern so as to straddle the first surface and the second surface of the formed body Let the uneven | corrugated pattern addition decoration molded object be a 1st summary.

  Further, according to the present invention, in particular, a metal thin film layer is formed on the surface of the molded body, and overlaps with at least a part of the concavo-convex pattern Q and extends over the first and second surfaces. A second gist is a concavo-convex pattern added decorative molded article in which a part of the metal thin film layer is partially removed to form a notch pattern R.

  Furthermore, according to the present invention, a first surface which is a specific arrangement with respect to the virtually set rotation center axis P, and a first surface which is continuous with the first surface and which is different from the first surface with respect to the rotation center axis P A step of preparing a formed body having a second surface to be disposed, laser irradiation is performed on the surface of the formed body, the surface portion is partially removed to form a recess, and the recess and the recess And a step of obtaining a concavo-convex pattern Q with a portion where no concavo-convex pattern is formed, wherein in the step of obtaining the concavo-convex pattern Q, the formed body is At least a part of them is disposed so as to straddle the first surface and the second surface of the molded body by holding the roller rotatably as the center and performing laser irradiation while rotating the molded body continuously or intermittently. Concave-convex pattern addition which forms concavo-convex pattern Q which becomes a continuous pattern The preparation of molded bodies and the third aspect.

  In the present invention, among them, particularly, the step of forming a metal thin film layer on the surface of the molded body on which the above-mentioned concavo-convex pattern Q is formed, a part of the above-mentioned metal thin film layer A method of manufacturing a concavo-convex pattern-added decorative molded article, comprising: a step of forming a notch pattern R by partially removing a portion overlapping with the first surface and the second surface in an overlapping manner; I assume.

  In the present invention, among them, particularly in the step of forming the notch pattern R, the formed body on which the metal thin film layer is formed is rotatably held about its rotation center axis P, and the metal The notch pattern R is formed by performing laser irradiation while continuously or intermittently rotating the compact on which the thin film layer is formed, and at that time, using the laser irradiation data at the time of forming the concavo-convex pattern Q on the compact The fifth aspect of the present invention is a method of manufacturing a concavo-convex pattern-added decorative molding for forming the notch pattern R.

  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 concavo-convex pattern decorated molded article according to the present invention is a molded article provided with a first surface different in arrangement, and a second surface contiguous with the first surface and different in arrangement from the first surface. Recesses are formed continuously or intermittently on the surface thereof, whereby a concavo-convex pattern Q is formed. Then, at least a part of the concavo-convex pattern Q is continuous in the arrangement extending over the first surface and the second surface of the molded body in the direction along the rotation direction when the molded body is rotated in the specific direction. It is formed as a typical pattern.

  According to this configuration, although a concavo-convex pattern in a single plane and a plurality of independent concavo-convex patterns are separately provided conventionally, a series of continuous patterns across at least two planes. Since the asperity pattern Q is given, it is an attractively decorated molded body full of a sense of unity as a whole that has never been seen before. Therefore, in the market, the concavo-convex pattern added decorative molded article of the present invention has a high eye catch effect, and the added value of a product using the concavo-convex pattern added decorative molded article can be enhanced.

  And, of the present invention, in particular, a metal thin film layer is formed on the surface of the molded body, and overlaps at least a part of the concavo-convex pattern Q, and is disposed across the first surface and the second surface, The concavo-convex pattern added decorative molded article in which a part of the metal thin film layer is partially removed to form a notch pattern R is a notch pattern R in at least a part of a part where the concavo-convex pattern Q is formed. As a result, the three-dimensional shading is generated by the combination of the concavo-convex pattern Q and the notch pattern R, resulting in a more impressive appearance.

  Further, the manufacturing method of the present invention is a method for obtaining the above-mentioned concavo-convex pattern added decorative molded body, and in the step of forming the above-mentioned concavo-convex pattern Q, the above-mentioned molded body is held rotatably around the rotation center axis P. Irregular pattern having a continuous pattern in which at least a part thereof straddles the first surface and the second surface of the molded body by performing laser irradiation while rotating the molded body continuously or intermittently. It forms Q.

  According to this manufacturing method, in order to form the concavo-convex pattern Q continuously from the first surface to the second surface by rotating the molded body along the virtually set rotation center axis P. The target surface on which the concavo-convex pattern Q is to be formed is removed in a concave shape while 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 distortion or omission of the pattern, and a regular and beautiful uneven pattern Q can be obtained.

  Then, among the manufacturing method of the present invention, in particular, in the step of preparing the above-mentioned formed body, the concavo-convex pattern Q is formed in an arrangement straddling the first surface and the second surface of the above-mentioned formed body. In a step of preparing a molded body in which a metal thin film layer is formed on the first surface and the second surface directly or through another layer, and obtaining the notch pattern R, at least a part of the uneven pattern Q In the arrangement in which the notch pattern R is formed by overlapping the first and second surfaces, an impression of a more impressive pattern is formed in which the concavo-convex pattern Q and the notch pattern R are continuously overlapped in the arrangement across the first surface and the second surface. A decorative molded body can be easily obtained, which is preferable.

  Further, among the above-described manufacturing methods using the compact having the metal thin film layer formed thereon, in particular, in the step of forming the notch pattern R, the compact having the metal thin film layer formed thereon is referred to as the central axis of rotation P thereof. The notch pattern R is formed by performing laser irradiation while continuously or intermittently rotating the formed body on which the metal thin film layer is formed, while holding the free rotation centering on the center of the formed body. In the case of forming the notch pattern R by utilizing the laser irradiation data at the time of forming the concavo-convex pattern Q, it is possible to easily obtain an overlapping pattern of the concavo-convex pattern Q and the notch pattern R with high positional accuracy. It is.

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 an uneven | corrugated pattern in the said cover part. (A) is explanatory drawing of the formation method of the uneven | corrugated 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 uneven | corrugated pattern. (A), (b) is explanatory drawing of the formation method of the said uneven | corrugated pattern together. (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 an uneven | corrugated pattern in the said cover part. (A) is explanatory drawing of the formation method of the uneven | corrugated 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 uneven | corrugated pattern. (A), (b) is explanatory drawing of the formation method of the said uneven | corrugated pattern together. (A) is a perspective view showing the form at the time of forming a concavo-convex pattern in a container main part which is further another embodiment of the present invention, (b) is an explanatory view of the formation method of the concavo-convex pattern to the above-mentioned container main part; (C) is a right side view of (b). (A) is a perspective view showing a form at the time of forming a concavo-convex pattern in a state in which the main body portion and the lid portion are integrated in another embodiment of the present invention, (b) is a perspective view of the main body portion and the lid portion Explanatory drawing of the formation method of the uneven | corrugated pattern with respect to an integrated product, (c) is a right view of (b). It is a fragmentary sectional view of the lid part 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 a molded body 10 made of a resin [in this example, acrylonitrile-butadiene-styrene (ABS) resin], on the surface of which a concavo-convex pattern Q is formed by a portion in which a recess and a recess are not formed. . The uneven pattern Q is a band-like pattern in which a wide lace-like ribbon and a narrow string-like ribbon are combined, and the stripe-like pattern is formed so as to cross the top surface 2 in two diagonal lines. It is done.

  More specifically, one of the band-shaped patterns in the uneven pattern Q crosses the top surface 2 obliquely 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).

  Although the two stripe patterns, which are the above-mentioned uneven pattern Q, both extend over three planes, the patterns are continuously formed without interruption even at corner portions that are boundaries of each plane. . 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 concavo-convex pattern Q extends over three surfaces (first surface → second surface → third surface) as a strip pattern of two streaks, but it is not always necessary to There is no need to span, and at least a part of the concavo-convex pattern Q may be formed across at least two surfaces (first surface → second surface). And the pattern part of the concavo-convex pattern Q formed across at least two surfaces is connected not only as a literally continuous pattern connected without interruption, but also as a whole as a whole even if there is an interrupted part on the way It does not matter if it is a group of patterns that looks like it's

  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 the ABS resin as a resin material, a molded body 10 having a shape to be the lid 1 is prepared. For molding of the molded body 10, an appropriate molding method such as injection molding using a mold is used.

  Next, laser irradiation is performed on a predetermined portion of the surface of the molded 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), as shown in FIG. Then, the surface of the molded body 10 is partially melted away to form a concavo-convex pattern Q (see FIGS. 1 and 3). In addition, the removal process with respect to the surface of the molded object 10 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, for example, rotating the molded object 10 using an apparatus as shown in FIG. More specifically, this apparatus comprises a work holding portion 21 for holding the molded body 10 in an arrangement in which the specific rotation center axis P is a 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 molded body 10 to hold the molded body 10.

  Further, in this example, from the point of work efficiency by laser irradiation, the two compacts 10 are held in the workpiece holder 21 in the arrangement of 180 ° rotational symmetry with respect to the rotation center axis P, and two continuously It is designed to perform laser irradiation processing. Of course, only one molded 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 the laser is vertically directed toward the compact 10 held by the workpiece holding unit 21 as indicated by the arrow. Light is to be emitted.

  The formation method of the uneven | corrugated design Q by laser irradiation using the said apparatus is demonstrated concretely. First, as shown in FIG. 5A, two pieces of the molded body 10 are attached to the workpiece holding portion 21 so as to be rotationally symmetrical to each other by 180 ° with respect to the rotation center axis P. Hereinafter, the molded body 10 disposed on the back side in FIG. 5A and the molded body 10 ′ disposed on the front side will be described separately. In the initial state before processing, the compacts 10 and 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 shown in FIG. 5A, the workpiece holding portion 21 is rotated to the front side as indicated by the arrow X while performing laser irradiation toward the back surface portion 4 and the left side surface portion 5 of the back side molded body 10. Via the arrangement of FIG. 5 (c) where the top surface 2 of the molded body 10 is horizontal, the top surface 2 of the molded body 10 is rotated to the arrangement of FIG. 6 (a) which is vertical on the front side. As a result, the molded body 10 is rotated by 180 ° around the rotation center axis P, and in the order of the back surface 4 and the left side surface 5 → top surface 2 → front surface 3 and right side surface 6 of the molded body 10 The laser irradiation is continuously performed, and a concavo-convex pattern Q formed of a strip pattern of two streaks is continuously formed along the rotation direction (the direction indicated by the arrow X) (see FIG. 3).

  Next, in the arrangement of FIG. 6 (a), laser irradiation is performed to the back surface 4 and the left side surface 5 of the green body 10 '(unprocessed) positioned on the back side, as in the case of the green 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 concavo-convex pattern Q can be formed on the molded body 10 '.

  Then, the compacts 10 and 10 'can be removed from the workpiece holding portion 21 to obtain the two lids 1. The surface of the lid 1 obtained is partially removed to form a recess, and a continuous strip pattern from the back surface 4 to the right side surface 6 via the top surface 2 and the top surface from the left side surface 5 A concavo-convex pattern Q is formed, which is a continuous strip pattern extending to the front part 3 via the surface part 2. And since the uneven | corrugated pattern Q is continuously formed in any corner | angular part which straddles two surfaces, without interrupting the pattern, the uneven | corrugated pattern Q is a very beautiful finish as a whole.

  In particular, the openings of the respective recesses constituting the above-mentioned concavo-convex pattern Q are formed in a specific direction with respect to the rotational direction X (see FIG. 3) of the molded body 10 (hereinafter also including 10 ') Because it is regular in the direction in which the asperity pattern Q extends, both the asperity pattern Q, a delicate pattern reminiscent of a lace, and a pattern reminiscent of a gently curved string, are both clearly represented. To exert a high eye catch effect. And since the unevenness of such unevenness pattern Q is not easy to mold with a mold because of the relation of draft, it is very practical value that such easy acquisition by laser irradiation is possible It can be said that it is big.

  Moreover, due to the unevenness pattern Q, the corners of the lid 1 extending from the top surface 2 to the side surfaces 5 and 6 from the top surface 2 and the corners from the top surface 2 to the front surface 3 and the back surface 4 are also uneven. Since roughness is imparted, when the cosmetic container is opened and closed by putting a hand on the lid portion 1, it has an advantage that the finger does not slip and it is easy to use. In addition, even when the cosmetic container itself is handled, the roughness of the uneven pattern Q acts as a non-slip member and has an advantage of being easy to handle.

  As described above, when laser irradiation is performed while continuously rotating the molded body 10 by 180 °, depending on the design of the concavo-convex pattern Q, the amount of processed data to be handled for one laser irradiation becomes enormous. And one process may take a relatively long time.

  Therefore, instead of performing laser irradiation while continuously rotating the molded body 10 to form the concavo-convex pattern Q all at once, the molded body 10 is rotated by (180 / n) ° at a time to interrupt n times of laser irradiation. (For example, when the molded body 10 is rotated 45 ° at a time and divided into 4 times), the amount of processed data to be handled for one laser irradiation is compared with the continuous rotation of 180 °. 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 asperity pattern Q between the start point and the end point of the laser irradiation.

  Therefore, depending on the design of the concavo-convex pattern Q and the required processing amount per unit time, as described above, the laser irradiation may be intermittently performed by dividing into n, or the concavo-convex may be performed by one rotation operation as described above. It is desirable to use different patterns Q to be formed continuously and continuously.

  In the above example, the material of the molded 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. And the color of the said molded object 10 is selected according to the design of the whole container, and whether it is transparent or opaque, and also colored or colorless.

Further, the laser used to form the concavo-convex pattern Q with respect to the above-mentioned molded body 10 is not particularly limited as long as it has a melting and removing function to the resin, and various types of laser irradiation are used be able to. 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.

  Furthermore, in the present invention, the rotation center axis P when rotating the formed body 10 to form the concavo-convex pattern Q is virtual in each case in consideration of the design of the concavo-convex pattern Q and the three-dimensional shape of the formed body 10. Are set. 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. .

  And although said example is an example which applied this invention to the cover part 1 of the cosmetics container of a compact type, it applies to the cover 31 of the cosmetics container of a jar type as shown to Fig.7 (a), for example. You can also The lid portion 31 is composed of a top surface portion 32 and a cylindrical side surface portion 33. As in the case of the lid portion 1 shown in FIG. A band-like concavo-convex pattern Q 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 subjected to laser irradiation while rotating the molded body 40 to be the lid 31 using the apparatus shown in FIG. The uneven pattern Q that spans 33 can be formed.

  More specifically, in this example, in order to hold the molded body 40, for example, a work holding portion 45 shown in FIG. 7 (b) is used. The work holding portion 45 is provided with a drum-like work fitting portion 46 at the tip of the support shaft 45 a, and the molded bodies 40 and 40 ′ are fitted and held on both sides thereof. . The engagement guides 47 are for preventing the molded bodies 40 and 40 ′ from falling off, and two are provided along the side surface of the work fitting portion 46, and the molded bodies 40, 40 are provided at their respective tips. 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 molded body 40, 40 'is fitted and held in a stable manner with the work fitting portion 46, the engagement guide 47 is not necessarily required.

  Attach the formed body 40, 40 'to the work holding portion 45, and as shown in FIG. 8A, arrange so that each top surface 32 of the formed body 40, 40' is vertical in the initial state before processing . 8 (b) is a right side view of FIG. 8 (a).

  Then, in the arrangement shown in 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 back side molded body 40, thereby forming the molded body 40. The top surface 32 of the molded 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 formed body 40 is rotated 180 ° around the rotation center axis P, and is continuous in the order of one side of the side surface portion 33 of the formed body 40 → the top surface portion 32 → the other side of the side surface portion 33. As a result, the belt-like concavo-convex pattern Q is continuously formed along the rotational direction (the direction indicated by the arrow X).

  Next, in the arrangement of FIG. 9 (a), while irradiating the molded body 40 ′ (unprocessed) located on the back side with the laser toward the side surface portion 33 as in the case of the above-described molded body 40, 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. Thus, the concavo-convex pattern Q can be formed on the molded body 40 '.

  Then, the compacts 40 and 40 'can be removed from the workpiece holding portion 45 to obtain two lid portions 31 (see FIG. 7A). The surface of the obtained lid portion 31 is partially removed, and a continuous strip-shaped uneven pattern Q is formed extending from one side of the side surface portion 33 through the top surface portion 32 to the other side of the side surface portion 33 It is done. And since the uneven | corrugated pattern Q is continuously formed in any corner | angular part which straddles two surfaces, without interrupting the pattern, the uneven | corrugated pattern Q is a very beautiful finish as a whole.

  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.

  If it demonstrates in more detail, first, as shown to Fig.10 (a), the molded object 50 to which the shape used as the said main-body part was provided is prepared. 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 center plate of the molded body 50 and an engagement engaged with the edge of the notch 50a serving as the hinge of the molded body 50 A pawl 62 and an engagement pawl 63 engaged with the lid opening / closing engagement portion are provided. In the case where the molded body 50 is stably fitted and held by the fitting of the tip end surface of the work fitting portion 61 and the molded body 50, the engaging claws 62 and 63 are not necessarily required.

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

  In the above arrangement, while performing laser irradiation toward one of the side surfaces 54, the workpiece holding unit 60 is rotated forward as shown by the arrow X, and the arrangement of the side surfaces 54 is sequentially changed, Rotate 360 ° from the initial position. Thereby, the uneven pattern Q (not shown) extending continuously can be formed over the entire circumference of the side surface portion 54. Of course, the concavo-convex pattern Q formed by the laser irradiation does not have to extend over the entire circumference of the side surface 54, as long as it continuously extends over at least two surfaces.

  Further, as in the case of forming the concavo-convex pattern Q in the lid 1 shown in FIG. 1, the concavo-convex pattern straddling from the side face 54 to the bottom face 53 is achieved by arranging the bottom face 53 not vertically but inclined. Q may be formed.

  Furthermore, the present invention can be applied to, for example, a cosmetic container of a compact type in which a concavo-convex pattern Q 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 workpiece holding portion 90 can hold the lid portion molded body 70 serving as the lid portion and the main body portion molded body 80 serving as the main body in a closed state. Can be attached to the device shown in FIG.

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

  In the initial state before processing, the cover holding body 90 and the main body holding body 80 are held closed in the work holding portion 90, and as shown in FIG. Both the top surface 71 and the bottom surface 81 of the molded body 80 are vertical, and the two side surfaces of the molded bodies 70 and 80 are arranged to be surfaces to be subjected to laser irradiation. 11 (c) is a right side view of FIG. 11 (b).

  Then, in the arrangement of FIG. 11 (b), while the laser irradiation is performed toward the side surface portions of the above-mentioned formed bodies 70, 80, the work holding portion 90 is rotated to the front side as shown by the arrow X. Next, laser irradiation is performed on the top surface portion 71 of the lid portion molded body 70, and the laser irradiation is also performed on the opposite side surface portions of the two molded bodies 70 and 80 by rotating. In this manner, in the state where the lid portion molded body 70 and the main body portion molded body 80 are closed, it is possible to continuously form the uneven pattern Q (not shown) extending over both without interruption. Of course, the concavo-convex pattern Q formed by the laser irradiation does not have to be continuously formed in a whole series, but extends continuously across at least two surfaces (the first surface and the second surface) What is necessary.

  In the above series of examples, the surface of the molded body 10 (including 40 etc.) is partially removed to obtain the concavo-convex pattern Q. For example, as shown in FIG. After applying the concavo-convex pattern Q to the surface of the metal film, the metal thin film layer 12 is formed through the undercoat layer 11 if necessary, and the metal thin film layer 12 is partially removed to form a notch pattern. R may be formed.

  In that case, the notch pattern R preferably overlaps with at least a part of the lower concavo-convex pattern Q, and is formed so as to straddle the first surface and the second surface on which the concavo-convex pattern Q is formed. is there. That is, since the three-dimensional shading occurs in the notch pattern R at the overlapping portion of the concavo-convex pattern Q and the notch pattern R continuous across the two surfaces, the case where the concavo-convex pattern Q is formed alone or Compared to the case where the notch pattern R is formed alone, it is more impressive and has a higher eye-catching effect.

  In order to form the notch pattern R continuously across the two surfaces, the metal thin film layer 12 is formed using, for example, the apparatus shown in FIG. 4 as in the case of forming the concavo-convex pattern Q described above. It is preferable to perform laser irradiation while rotating the formed body 10 about the specific rotation center axis P as in the case of forming the concavo-convex pattern Q. That is, according to this method, the notch opening of the notch pattern R can be formed continuously and accurately across the two surfaces, and a fine and beautiful notch pattern R can be obtained.

  And when forming the said notch pattern R by laser irradiation, since the processing data at the time of forming the uneven pattern Q can be utilized for the processing data at the time of forming the notch pattern R, a complicated adjustment is made. It is possible to form the notch pattern R in an appropriate arrangement with respect to the concavo-convex pattern Q without performing.

In addition, as a laser in the case of forming the said notch pattern R, if it has a removal effect | action with respect to a metal thin film layer, it will not be specifically limited, A various laser can be used. For example, a YAG laser, a YVO ₄ laser, a semiconductor laser or the like is suitably used.

  Further, the metal thin film layer 12 formed on the surface of the molded body 10 to form the notch pattern R may be a vapor deposition layer made of another metal material such as stainless steel other than the aluminum vapor deposition layer. Then, a hologram forming layer, a pearl tone imparting layer, and the like can be further formed on the metal thin film layer 12 to obtain a more complicated metallic luster color tone. Of course, a transparent top coat layer may be provided on the metal thin film layer 12 and other layers formed thereon.

  The present invention is not limited to the cosmetic container of the compact type or the jar type, but also various resin molded articles for which a beautiful decoration by the concavo-convex pattern Q extending from the first surface to the second surface is required. It is widely applicable to 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 entertaining decorated molded body in which a beautiful uneven 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 molded body Q uneven 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 A molded body having a face and
On the surface of the molded body, there is provided a concavo-convex pattern Q composed of a recess formed continuously or intermittently and a portion where the recess is not formed,
An arrangement in which at least a portion of the uneven pattern Q straddles the first surface and the second surface of the molded body in the direction along the rotational movement direction when the molded body is rotated about the rotational center axis P A concave / convex pattern-added decorative article characterized by being formed as a continuous pattern.   A metal thin film layer is formed on the surface of the molded body, and a portion of the metal thin film layer partially overlaps with at least a part of the concavo-convex pattern Q in an arrangement straddling the first surface and the second surface. The relief-pattern-added decorative molded article according to claim 1, wherein the notch pattern R is formed by removing the notch pattern R. 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 A step of preparing a molded body having a surface, and laser irradiation is performed on the surface of the molded body, the surface portion is partially removed to form a recess, and the recess and a portion where the recess is not formed And a step of obtaining the concavo-convex pattern Q by
In the step of obtaining the concavo-convex pattern Q, at least the molded body is held rotatably around the rotation center axis P, and laser irradiation is performed while rotating the molded body continuously or intermittently. A manufacturing method of a concavo-convex pattern addition decoration molded article characterized by forming concavo-convex pattern Q which becomes a continuous pattern by arrangement which straddles the 1st field of the above-mentioned compact, and the 2nd field.   Forming a metal thin film layer on the surface of the molded body on which the concavo-convex pattern Q is formed; and overlapping a part of the metal thin film layer with at least a part of the concavo-convex pattern Q; 4. A method of manufacturing a relief-pattern-added decorative molded article according to claim 3, further comprising the step of forming a notch pattern R by partially removing in an arrangement across a surface.   In the step of forming the notch pattern R, the formed body on which the metal thin film layer is formed is rotatably held about the rotation center axis P, and the formed body on which the metal thin film layer is formed is continuously or The notch pattern R is formed by performing laser irradiation while intermittently rotating, and forming the notch pattern R by using the laser irradiation data at the time of forming the concavo-convex pattern Q on the molded body. The manufacturing method of the uneven | corrugated pattern additional decoration molded body of 4 description.

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