JP2014100833A - Multilayer molding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a multilayer molding in which edge dripping of a coating material is suppressed.SOLUTION: In a panorama roof 1, a plurality of fine projected parts 22 extending in the surface direction along the surface 10a of a window material 10 from a window frame material 20 are formed, as an uneven part, in the border between the window frame material 20 and the window material. Since the flow of a coating material 30 that is apt to flow along the border is inhibited by the fine projected parts 22, the accumulation of the coating material 30 hardly occurs, and edge dripping caused by the accumulated coating material 30 is suppressed.

Description

  The present invention relates to a multilayer molded body used for a vehicle such as an automobile.

  In recent years, resin windows have been increasingly used for automobile panorama roofs, back doors, quarter windows and the like. Some resin windows are produced by so-called two-layer molding in which a transparent resin is molded into a plate shape, and then a resin that becomes a window frame is injection-molded on one surface of the transparent resin.

  It is also known that a film having various functions such as a hard coat layer and an ultraviolet / infrared cut layer is formed on the surface of the resin window.

  Various known methods can be used for coating the resin window. However, in the case of applying a droplet-like paint such as spray application, fine irregularities of the paint are easily formed on the surface of the resin window, the appearance is deteriorated, and the function of the film may be deteriorated. .

  Therefore, as a method for coating a resin window, a flow coat method in which a paint is poured from above onto a resin window standing on a jig, a dip method in which the resin window is immersed in a paint bath, and the like are suitable.

  However, even when the above-described flow coating method or dip method is used, there are the following problems when a film is formed on a resin window having a window frame by two-layer molding. That is, in the region where the resin that becomes the window frame is located above the transparent resin that becomes the window, a phenomenon that the paint droops from the window frame resin to the transparent resin in a streak-like manner (so-called so-called There was a problem that it would occur.

  The sag is likely to occur when the resin that becomes the window frame is tilted in the area located above the transparent resin that becomes the window, and the paint flowing along the window is gradually accumulated, and the accumulation limit is at a certain point. When it exceeds, the paint drips from the point.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is to provide a multilayer molded body in which sagging is suppressed during coating.

  The multilayer molded body according to the present invention includes at least a plate-like first resin material and a frame-like second resin material surrounding the first resin material on one surface of the first resin material. And a multilayer molded body in which a coating that integrally covers the first resin material and the edge of the second resin material is formed on one surface of the first resin material, the second resin material And the first resin material, an uneven portion is formed on the second resin material side.

  In this multilayer molded body, when the second resin material and the first resin material, the uneven portion formed in the second resin material obstructs the flow of the paint that flows along the second resin material. . Therefore, the accumulation of the paint is less likely to occur, and the sagging caused by the accumulated paint is suppressed.

  Moreover, the aspect which is a microprotrusion part extended in a surface direction along the surface of a 1st resin material from the 2nd resin material may be sufficient as the uneven | corrugated | grooved part of a 2nd resin material. According to such a fine protrusion, since at least a part of the coating material that flows along the way is blocked, the flow of the coating material along the way is obstructed.

  Furthermore, the uneven | corrugated | grooved part of a 2nd resin material may be the aspect which is the embossing surface of the surface of a 2nd resin material. According to such a textured surface, since it is easy to flow down without being along, the flow of the paint along the surface is obstructed.

  ADVANTAGE OF THE INVENTION According to this invention, the multilayer molded object with which suppression at the time of a coating was aimed at is provided.

FIG. 1 is a schematic diagram showing a panoramic roof according to an embodiment of the present invention. FIG. 2 is a partially enlarged view of the panoramic roof shown in FIG. 3 is a cross-sectional view taken along line III-III in FIG. FIG. 4 is a view showing a window frame material according to the prior art. FIG. 5 is a cross-sectional view showing a window frame member in a mode different from that in FIG. 6 is a cross-sectional view taken along line VI-VI in FIG.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description, the same reference numerals are used for the same elements or elements having the same function, and redundant description is omitted.

  FIG. 1 is a view showing a panorama roof 1 of an automobile which is a two-color molded body according to an embodiment of the present invention, and is a view showing a state where the panorama roof 1 is leaned against a jig (not shown).

  The panorama roof 1 includes a plate-like window material (first resin material) 10 made of a transparent resin and a frame-like window frame material (second resin material) 20 made of a black resin. Yes. This panoramic roof 1 is a so-called two-color molded body (which is a kind of multilayer molded body) obtained by injection molding a black resin to be a window frame material 20 on one surface of a transparent resin to be a window material 10. is there.

  As shown in FIG. 1, the window frame member 20 is arranged so as to surround the periphery of the window member 10 on the surface 10 a on the passenger compartment side of the window member 10. More specifically, the window frame member 20 has a shape in which two rectangular openings are arranged side by side, and the window member 10 is exposed from each of the openings.

  The panorama roof 1 is provided with a hard coat layer (film) having functions such as weather resistance, durability, and scratch resistance. The hard coat layer integrally covers the cabin-side surface 10 a of the window member 10 exposed from the opening of the window frame member 20 and the edge 22 around the opening of the window frame member 20.

  Such a hard coat layer can be formed, for example, by application of a paint using a flow coat method. Hereinafter, a method for forming a hard coat layer using the flow coat method will be described.

  When forming the hard coat layer, as shown in FIG. 1, the panoramic roof 1 is leaned substantially vertically on the jig, and the paint to be the hard coat layer is poured from the hose.

  At this time, the paint is discharged from the hose toward the upper edge of the window frame member 20. Then, the paint flows down toward the window member 10 located below the edge. As a result, the paint released from the hose is applied so as to integrally cover the edge of the window frame material 20 and the window material, and this paint is dried, whereby the above-described hard coat layer is formed.

  As described above, when the paint is poured over the upper edge of the window frame member 20, if the edge is inclined, the paint flows along the window frame member 20 and the window member 10. Try to.

  However, at the time of the window frame material 20 and the window material 10 (boundary region), a plurality of fine protrusions 22 are formed as uneven portions formed on the window frame material 20. The plurality of fine protrusions 22 of the window frame member 20 are formed at equal intervals along the way, and each fine protrusion 22 extends in the surface direction along the surface 10 a of the window member 10 from the window frame member 20. It is a prismatic part.

  According to the window frame member 20 provided with such fine protrusions 22, when the upper edge portion of the window frame member 20 is inclined, the window frame member 20 is swung over the upper edge portion of the window frame member 20. Even when the paint flows along the window frame material 20 and the window material 10, the fine protrusions 22 block at least a part of the paint about to flow along the window frame material 20 and the window material 10. And the coating material in which the fine protrusion 22 was dammed flows down as a small flow in the position, as shown in FIG. Accordingly, the fine protrusions 22 inhibit the formation of a large flow of paint along the way.

  Further, as shown in FIG. 3, the flow path of the coating material 30 that gets over the fine protrusion 22 is divided into two by the fine protrusion 22. In this case, the volume of the paint 30 is reduced as compared with the case where there is one flow path. As a result, it becomes difficult for the coating material 30 to flow laterally due to the influence of surface tension and the like. In order to reliably divide the flow path of the paint 30 into two by the fine protrusion 22, the thickness d of the fine protrusion 22 is set so that a part of the fine protrusion 22 is exposed from the surface 30 a of the paint 30. It is preferable to design the shape (that is, the height from the window material 10) and the shape.

  On the other hand, as shown in FIG. 4, in the window frame member 120 in which the fine protrusions 22 are not provided, the upper edge of the window frame member 20 when the upper edge of the window frame member 20 is inclined. The coating material that flows along the part is gradually accumulated and a large flow of coating material is formed. Then, when the accumulation limit is exceeded at a certain location, the paint droops from the location in a streak-like manner, causing drooping.

  As described above, in the above-described panorama roof 1, when the window frame material 20 and the window material 10 are formed, the fine protrusions 22 are formed as uneven portions on the window frame material 20 side, and therefore flow along the window. The fine protrusions 22 effectively obstruct the flow of the paint 30 to be attempted. Therefore, accumulation of the paint 30 is difficult to occur, and drooping caused by the accumulated paint 30 is suppressed.

  FIGS. 5 and 6 are views showing a window frame member 20A and a window member 10A that are different from the window frame member 20 and the window member 10 described above.

  A textured surface 20a is formed on the surface of the edge portion of the window frame member 20A as an uneven portion. The textured surface 20a is subjected to known textured processing, and may include fine protrusions, wrinkles, grooves, and the like.

  Also on such a textured surface 20a, like the fine protrusion 22 described above, the existing paint flows down from the window frame member 20A as a small flow at that position. More specifically, a small flow is formed on the textured surface 20a so that the paint penetrates into the surface. Therefore, according to such a textured surface 20a, the formation of a large flow of the paint 30 along the way is inhibited. Therefore, also in the panoramic roof 1 provided with the window frame member 20A, accumulation of the paint 30 is difficult to occur, and drooping caused by the accumulated paint 30 is suppressed.

  In addition, in the present embodiment, when the window frame material 20A and the window material 10A are used, a textured surface 10b similar to the textured surface 20a is also formed on the window material 10A side.

  The textured surface 10b on the side of the window material 10A is also likely to seep into the surface, so that the paint that has flowed down from the window frame material 20A with a small flow is taken over by the window material 10A with the small flow. Therefore, by forming the textured surface 10b not only on the window frame member 20A but also on the window member 10A, the formation of a large flow of the paint 30 along the way is further effectively inhibited. be able to.

  In addition, this invention is not limited to the said embodiment, A various deformation | transformation is possible.

  For example, the film is not limited to a hard coat layer, and may be a film such as an ultraviolet cut layer or an infrared cut layer.

  The formation of the film is not limited to the application of the paint by the flow coat method, but may be the application of the paint by the dip method. Even in the dip method, the paint flows down from the window frame material 20 to the window material 10 when it is pulled up, as in the flow coating method. Therefore, when the upper edge of the window frame member 20 is inclined, the paint flows along the edge, but the flow is hindered by the uneven portions of the window frame members 20 and 20A described above. Thus, drooping is effectively suppressed.

  Further, the two-color molded body is not limited to a panoramic roof, and may be a resin window such as a back door or a quarter window, or may be one or three or more resin windows having an opening of a window frame member.

  Further, the present invention is not limited to the two-color molded body (two-layer molded body) of the above-described embodiment, and is a multilayer molded resin window (that is, multilayer molded) in which a plate-like window material and a window frame material are separately injection-molded. Body). For example, the plate-like window material and the window frame material can be applied to a resin window made of the same material. Further, the plate-like window material itself may have a structure of two or more layers, or may be applied to a resin window of three or more layers adopting a structure of two or more layers in order to increase the thickness of the window frame material.

  DESCRIPTION OF SYMBOLS 1 ... Panorama roof, 10, 10A ... Window material, 10b ... Textured surface, 20, 20A ... Window frame material, 20a ... Textured surface, 22 ... Fine protrusion, 30 ... Paint.

Claims (3)

At least a plate-shaped first resin material and a frame-shaped second resin material surrounding the first resin material on one surface of the first resin material, and the first resin material A multilayer molded body in which a coating that integrally covers the first resin material and the edge of the second resin material is formed on the one surface of the resin material,
A multilayer molded body in which an uneven portion is formed on the second resin material side at the time of the second resin material and the first resin material.   2. The multilayer molded body according to claim 1, wherein the uneven portion of the second resin material is a fine protrusion extending in the surface direction from the second resin material along the surface of the first resin material.   The multilayer molded body according to claim 1, wherein the uneven portion of the second resin material is a textured surface of the surface of the second resin material.

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