JP4773391B2 - Manufacturing method of aluminum-like resin extruded material - Google Patents

Description

  The present invention relates to a method for producing an aluminum-like resin extruded material having an aluminum color and an aluminum die mark-like fine streak pattern.

  The resin extrusion material has been subjected to appropriate processing such as cutting, notching, drilling, joining, etc. from the past, for example, a double sash in which the outdoor side is made of aluminum and the indoor side is made of resin, It is used for resin sash window frames and shoji screens made of resin, and is also widely used for various applications such as other building materials, furniture, vehicles, etc. At this time, the resin extruded material is, for example, brown type or It is said to use a vinyl chloride resin colored in a white system, and the vinyl chloride resin is used as a resin base, and a vinyl chloride sheet with a woodgrain pattern is laminated to this, or co-extrusion is used to produce a brown system chloride. By changing the flow rate of vinyl-based resin, it is a co-extrusion multi-layer that expresses a grain-like surface pattern, and its appearance design, especially for indoor use, is improved. Recently, as a technology related to coextrusion, an impact modifier is added to the resin base of vinyl chloride resin for the purpose of ensuring high choking performance while ensuring impact resistance as shown in the following patent document. There has also been proposed a resin extruded material for window frames and the like that is excellent in weather resistance, smoothness, and impact resistance by coextrusion of the added vinyl chloride resin.

JP 2004-74624 A

  Resin products processed from resin extrusions often exhibit the appearance design of being made of resin, and tend to give an impression that the texture is inferior, and as described above, the appearance design is improved as a woodgrain Even in this case, the impression of being made of resin is not discarded, and it is relatively easy to determine that it is made of resin. For this reason, it is required to improve the texture of products using this type of resin extruded material by improving the appearance impression.

  On the other hand, the resin extruded material can be made to have an aluminum color tone by adjusting the pigment added thereto, and further, fine streak grooves are formed on the surface of the resin extruded material in the sizing process immediately after extrusion molding. It is relatively easy to make the resin extruded material aluminum-like as it has a streak pattern imitating a die mark (also called a die mark) found in an aluminum extruded material. Resin products that have been used in the above-mentioned double sash window frames and shoji caskets, resin sash window frames and shoji caskets can be used to make aluminum It is possible to have an appearance of

  However, even in this case, the color tone is assumed to be as close as possible to the aluminum color tone, that is, the color tone of the aluminum base metal, and various color tones such as stainless steel and bronze by electrolytically coloring it. Even if it can be done, even if the surface of the fine streak groove is imitated by imitating a die mark, it will be practically used as an aluminum-like material because it will be significantly different from the extruded aluminum material in both visual and tactile sensations. It cannot be said that it can withstand.

  That is, the die mark of the aluminum extrusion material is a fine streak groove that is formed in the width direction or the outer peripheral direction and formed in a straight line in the longitudinal direction, and is etched in the surface treatment process after the extrusion process. The surface roughness of the aluminum surface is reduced by applying it, but it is still a fine streak pattern that remains on the aluminum surface. Since a film is formed, the surface of the aluminum extruded material is always provided with smoothness by being covered with the clear coating film. The die mark is seen by the fact that the aluminum surface is seen through the clear coating film having smoothness. Therefore, even if a fine streak is formed on the surface of the resin extruded material, light reflection, The appearance and impression similar to the die mark cannot be secured due to shading, etc., and if the surface is watched or touched for a few seconds, it is immediately determined that the streak groove is arranged, and the surface is smooth after all. It is impossible to give the appearance and texture of an aluminum extruded material that has a streak pattern. Further, if the surface groove is formed even though it is fine, dust and dirt are attached to the surface, causing a phenomenon that cannot be seen in the case of an aluminum extruded material, and there is a problem that cleaning is required.

  The present invention has been made in view of such circumstances, and the problem to be solved is to smooth the surface and prevent dust and dirt from being attached as much as possible. The present invention provides a method for producing an aluminum-like resin extruded material that has the appearance and texture of an aluminum extruded material as much as possible in both visual and tactile sensations.

  As a result of diligent examination along the above-mentioned problems, the fine streak pattern of the die mark approximation to the aluminum extruded material in the resin extruded material having a smooth resin skin is expressed by the resin base and the resin skin in the molten state. A mold in which conical streak-like fine grooves for shaping the streak-like fine ridges are formed from the resin inlet to the intermediate position on the molding surface for molding one of the above, and a flat surface is arranged from the intermediate position to the resin outlet. The streak-like fine ridge formed by passing through the conical streak-like fine groove is formed by passing the streak-like fine ridge and / or the flat surface. By placing it in a sunk shape within the thickness of one molten resin, or by digging into the other resin that is also in a molten state beyond the joint interface between the resin base and the resin skin, Precise and smooth The present invention has been obtained with the knowledge that it can be made beautifully. That is, the invention according to claim 1 is converted into a resin base and a smooth aluminum color by coextrusion. A resin extruded material having a fine resin surface and an aluminum die mark-like fine streak pattern, wherein one of the resin base and the resin skin is molded from the resin inlet to the molding surface. The one resin streak formed by passing the streak-like microgroove using a mold having a streak-like fine groove arranged in a cone shape in the extrusion direction and a flat surface from the intermediate position to the resin outlet. By disposing the fine ridges into the thickness of the one resin by passing through the streak-like fine grooves and / or the flat surface, or by biting into the other resin beyond the joint boundary surface thereof Fine streaks Is obtained by the manufacturing method of the aluminum-tone resin extruded material, characterized in that the exposed fine streaks pattern aluminum die marks tone by Article.

  In addition to the above, the invention described in claim 2 is characterized in that the conical streak-like fine grooves formed on the molding surface are changed in length in the extruding direction. The width of the fine line-shaped protrusions to be formed is different, and therefore the fine line pattern formed by the line-shaped fine protrusions is arranged in a random width without regularity. Since it can be approximated to a die mark, use a mold in which the conical streak-like fine grooves are formed in different lengths of mixed lengths from the resin inlet of the molding surface toward the intermediate position. It is set as the manufacturing method of the aluminum tone resin extrusion material of Claim 1 characterized by these.

  In addition to the above, the invention described in claim 3 is made of a vinyl chloride resin as the resin base, a styrene resin as the resin skin, and the fine streaks are formed on the surface of the styrene resin skin. As a combination of the resin base in the molten state and the resin skin in the coextrusion, the streak-like fine protrusions formed on the surface of the skin are submerged into the resin skin thickness or the bite-like arrangement into the resin base. It is possible to effectively and appropriately perform both of the above, making it possible to easily and reliably display fine streak patterns that are very beautiful and do not differ from the aluminum die mark, and have high adhesion by joining these resin bases and resin skins. Therefore, the resin base is made of vinyl chloride resin, and the resin skin is made of styrene resin. The surface fine grooves and the flat surface are arranged on a molding surface for molding the surface of the resin skin, and the surface of the resin skin is smoothed by passing through the surface fine grooves and / or the flat surface of the molding surface. 3. The resin base bite-like arrangement in which the fine fine protrusions formed on the surface of the skin are submerged in the thickness or beyond the boundary between the resin base and the resin is performed. This is a method for producing an aluminum-like resin extruded material.

  The present invention uses these as the gist of the invention and is a means for solving the above problems.

  Since the present invention is configured as described above, the invention according to claim 1 shows the expression of the fine streak pattern approximate to the die mark on the aluminum extruded material in the resin extruded material having a smooth resin skin. A conical streak-like fine groove that molds the streak-like fine ridge from the resin inlet to the middle position on the molding surface for molding one of the resin base and the resin skin on the flat surface from the middle position to the resin outlet. By using the mold in which the surface is arranged and passing the streak-like fine ridge formed through the conical streak-like fine groove through the streak-like fine ridge and / or the flat surface, Place the fine line-shaped protrusions into the melted one of the resin in the thickness of the resin, or bite into the other resin that is also in the molten state beyond the joint interface between the resin base and the resin skin. Precise by arranging in a shape One smoothly to be able to provide a method for producing the aluminum-tone resin extruded material that is adapted to be without a beautiful.

  In addition to the above, the invention described in claim 2 is characterized in that the conical streak-like fine grooves formed on the molding surface are changed in length in the extruding direction. The width of the fine line-shaped protrusions to be formed is different, and therefore the fine line pattern formed by the line-shaped fine protrusions is arranged in a random width without regularity. It can be approximated to a die mark.

  In addition to the above, the invention according to claim 3 is also the same as above, wherein the resin base is a vinyl chloride resin, the resin skin is a styrene resin, and the fine streak is the styrene resin. As a combination of the resin base and the resin skin that are in the molten state in the co-extrusion to be molded on the surface of the skin, the arrangement of the submerged fine protrusions formed on the surface of the skin into the resin skin wall thickness or resin Effectively and appropriately performing both biting arrangements on the base, it is possible to easily and reliably display fine streak patterns that are extremely beautiful and do not differ from the aluminum die mark, and these resin bases and resin skins. It is possible to ensure a high degree of adhesion by bonding and to prevent peeling of the skin.

  In the following, the present invention will be described in more detail with reference to the example of the drawings. A is an aluminum-like resin extruded material, and the resin extruded material A is molded by co-extrusion to form a resin base 10 and a smooth aluminum color tone. And translucent resin skin 11, and the resin base 10 and the resin skin 11 are embedded in one wall thickness or beyond the joint boundary surface and are bitten in the other and in the width direction or the outer circumferential direction. It has an aluminum die mark-like fine streak pattern expressed by the streak-like fine ridges 12 having random different widths. At this time, the coextrusion is formed at an intermediate position from the resin inlet to the molding surface. In this way, a mold having a fine line-shaped fine groove arranged in a conical shape in the extrusion direction and a flat surface from the intermediate position to the resin outlet is used.

  The resin extruded material A of the present example is made of a vinyl chloride resin as the resin base and a light-transmitting styrenic resin, particularly a translucent styrenic resin, particularly an aluminum color tone, for example, an electrochromic stainless color tone. As the styrenic resin, the resin skin 11 is coextruded so as to be arranged only in a portion exposed to the outside during use, and is used as an extruded material having a deformed cross section with a skin. The ridges 12 are formed on the resin skin 11 made of the above-described translucent styrene resin, and the fine ridges 12 are arranged in a submerged arrangement within the thickness of the resin skin 11 or In combination with the bite-like arrangement on the resin base 10, the fine streak pattern is not different from the die mark of the aluminum extruded material, and is as beautiful as this, and the resin extruded material A There as having the appearance and texture of extruded aluminum. The resin extruded material A is formed into an aluminum-like resin product according to its cross-sectional shape by performing appropriate processing such as cutting, notching, drilling, joining, etc., for example, a double sash indoor resin material, The resin sash is used for various uses such as building materials, furniture, vehicles, etc., as an indoor / outdoor resin material.

  In this example, the resin base 10 of the vinyl chloride resin has a thickness of, for example, 1 mm, and the resin skin 11 of the styrene resin is transparent to translucent, and in this example, translucent ABS. Using the above colored resin, the surface is made smooth and the wall thickness is 0.1 to 0.5 mm, preferably 0.2 to 0.4 mm. 3 mm. That is, the thickness of the resin base 10 can be set as appropriate according to the cross-sectional shape and application, but if the thickness of the resin skin 11 is less than 0.1 mm, the skin becomes too thin and the fine streak 12 is arranged. When the thickness exceeds 0.5 mm, the epidermis becomes too thick, making it difficult to visually check the fine streak 12, and the fine streak pattern surface is formed. It tends to be difficult to get out. If it is less than 0.2 mm and more than 0.4 mm, this tendency tends to be caused. The resin skin 11 can be colored or non-colored transparent resin or translucent resin as a translucent one, but the translucent resin is used to display a fine streak pattern by the fine streak 12 The output can be made more similar to the aluminum die mark than the transparent resin, which is preferable.

  A resin extruded material A that has a smooth resin skin 11 and that has an aluminum die mark-like fine streak pattern is produced by molding the resin base 10 or one surface of the resin skin 11 on the molding surface. The above-mentioned streak-like fine groove 23 is used by using a mold 20 in which a streak-like fine groove 23 arranged in a conical shape in the extrusion direction from the resin inlet to the intermediate position and a flat surface 24 from the intermediate position to the resin outlet are arranged. The fine line-shaped protrusions 12 of the one resin formed by the passage of the resin are submerged into the thickness of the one resin by the passage of the fine groove-like grooves and / or the flat surface 24 or the boundary between them. It is assumed that the fine streak pattern of the aluminum die mark tone by the fine streak 12 is expressed by being bitely inserted into the other resin.

  In the resin extruded material A of this example in which the resin base 10 is made of vinyl chloride resin and the resin skin 11 is styrene resin, the fine streak 23 and the flat surface 24 are made of the resin skin 11. Is formed on the molding surface 22 to be molded, and the surface of the resin skin 11 is smoothed and formed on the surface of the resin skin 11 by passing the conical streak-like fine grooves 23 and / or the flat surface 24 of the molding surface 22. It is assumed that the arrangement of the resin base 10 biting shape exceeding the boundary between the resin base 10 and the resin is performed.

  That is, the fine line-shaped protrusions 12 formed on one of the resin base 10 and the resin skin 11 can be placed in the thickness of one of them, or can be arranged so as to bite the other beyond the boundary between these joints. The resin base 10 and the resin skin 11 are both in a molten state by coextrusion, and the streak-like fine ridges 12 formed by passing through the streak-like fine grooves 23 in the melted state include the streak-like fine grooves 23 and It is considered that, by being pressed by passing through the flat surface 24, the thickness is, for example, submerged or bitten into the other while maintaining its molded shape. At this time, in addition to the mold having the cross-sectional shape of the streak-like fine grooves, for example, the melt viscosity of the resin is considered to affect the penetration and the bite of the streak-like fine ridges 12, so the resin base 10 and the resin skin 11 By selecting the resin on the side for molding the streak-like fine ridges 12, the arrangement density of the streak-like fine ridges, the molding conditions such as the molding height or width, and the like, it is possible to obtain a good appearance. This is preferable in forming a fine streak pattern having a texture.

  Further, like the resin base 10 of the vinyl chloride resin and the resin skin 11 of the styrene resin, the fine line-shaped protrusions 12 formed on the surface of the resin skin 11 by the combination of these resins are within the thickness. On the other hand, the resin base 10 can be bitten with the sink. In this case, since the melt viscosity of the resin skin 11 is particularly lower than that of the resin base 10, it is possible to achieve a viscosity suitable for performing the above-described sinking and biting, and to express a beautiful fine streak pattern. be able to. At this time, if the resin skin 11 is made of, for example, an ABS resin, high adhesion to the resin base 10 made of vinyl chloride resin and strong bonding strength can be obtained. Thus, it can have excellent durability.

  The resin base 10 and the resin skin 11 are molded by co-extrusion to form the resin extruded material A. The co-extrusion is performed by forming the streak-like fine ridges 12 and the resulting fine streak pattern. As necessary for extrusion, the co-extrusion may be carried out in accordance with a common method of co-extrusion used for general resin multilayering, and each step such as subsequent sizing accompanying extrusion molding is also the same. What is necessary is just to follow the usual method.

  However, the mold used for the coextrusion needs to be used for forming the fine pattern in order to form a fine streak pattern on the resin extruded material A. In this example, the mold 20 Are arranged on the molding surface 22, that is, the extrusion hole 21 for molding the resin base 10 or the resin skin 11, particularly on the molding surface for joining them, while the streak-like fine groove 23 is arranged on the molding surface 22. The length is assumed to be from the resin inlet of the molding surface 22 to the intermediate position in the extrusion direction, and the tip thereof is a flat surface 24 in the extrusion direction. The above-described submerging or biting is performed subsequently.

  At this time, the streak-like fine grooves 23 in the mold 20 of this example are arranged in the shape of the cone in the extrusion direction from the resin inlet of the molding surface 22 toward the intermediate position, and the streak-like fine grooves 23 are It is assumed that the length is mixed and different from the resin inlet of the molding surface 22 toward the intermediate position.

  The streak-like fine groove 23 is formed in a conical shape toward the extrusion direction, and is inclined from the resin inlet of the molding surface 22 to be streaky in the intermediate surface at the surface of the molding surface 22 and the resin skin 11. In the present example of forming the groove 23, the surface-like fine ridges 12 formed by the line-like fine grooves 23 are formed so as to be parallel to each other and without any unevenness. In order to form a fine streak pattern by the streak-like fine ridges 12 beautifully, it is preferable. That is, by making the streak-like fine groove 23 conical in the extruding direction, the conical streak-like fine groove 23 serves as a guide for guiding the submerged or biting of the formed streak-like fine ridge 12, As the resin, that is, the resin skin 11 progresses in the extrusion direction, the fine streaks 12 are submerged into the resin skin 11 while the extruded shape is maintained as it is, and the bite sinks into the resin skin 11. However, by smoothing the surface of the resin skin 11 having the fine streaks 12 that have settled, the resin skin 11 having a smooth surface and the above-described fine fine streaks can be obtained.

  At this time, the streak-like fine grooves 23 are formed in a triangular pyramid shape, that is, an inverted triangular pyramid shape by directing the cross-sectional shape into a V shape so that the cross-sectional shape thereof is V-shaped. The fine ridges 12 have a solid V-shaped cross-sectional shape with an acute tip, and the fine ridges 12 are a pair of widthwise direction and a total of three lines in a plan view. It is possible to make the fine streaks appear even more beautiful by making the pattern density more sophisticated.

  The streak-like fine grooves 23 may be arranged at appropriate intervals, for example, at the resin inlet of the molding surface 22. The arrangement density may be, for example, about 5 to 10 per 1 cm of the length of the resin inlet. Especially when the above-mentioned inverted triangular pyramid shape is used, the line of three pattern expression elements per minute groove is used. Generally, only a few are sufficient.

  On the other hand, when the above-mentioned conical streak-like fine grooves 23 are formed, the lengths of the streak-like fine grooves 23 are different lengths of mixed lengths. The amount of resin of the fine streak 12 is changed according to the width of the streak, and the fine streak 12 having a different width in the width direction is settling by the guide function of the fine streak 23. Therefore, it is possible to eliminate the arrangement of the line-shaped fine protrusions 12, that is, the regularity of the line of the pattern display element thereby, and to make the width direction or the outer peripheral direction random, and the fine line pattern Can be further approximated to an aluminum die mark.

  At this time, the fine line-shaped fine groove 23 is the longest one among the long and short mixed ones, and the tip of the fine groove 23 is located at the intermediate position in the extrusion direction of the molding surface 22 and the fine groove 23 of the remaining length is also formed. Although it is necessary to make it the same, the upper limit of the longest tip position is preferably about 70 to 80% of the molding surface length. That is, if it exceeds 80%, the width of the streak-like fine ridges 12 becomes too thick, resulting in an impression different from that of the aluminum die mark, and if it exceeds 70%, this tendency occurs. It is good to do. In addition, although there is no restriction | limiting about the short thing of long and short mixture, The thing short enough to not form the streak-like fine protrusion 12 does not have the installation significance.

  The depth of the streak-like fine grooves 23 is preferably set at a lower limit of 0.05 mm or more and an upper limit of 0.5 mm or less at the resin inlet of the molding surface 22. If the ridge 12 is too thin or cannot be formed substantially, the ridge 12 tends to be too thick. On the other hand, if the ridge 12 exceeds 0.5 mm, the fine ridge 12 tends to be too thick, leading to abnormal fine streak patterns. In order to avoid this easily, it is preferable that the upper limit of the depth of the fine groove 23 is 0.4 mm or less, particularly 0.3 mm or less. In the case where the fine streak 12 is formed on the surface of the resin skin 11, the upper limit of the depth is the thickness of the resin skin 11, but the thickness of this example is 0.3 mm. The depth needs to be 0.3 mm or less.

  Although the illustrated example is as described above, the fine streak pattern is formed by arranging the streak-like fine ridges on the resin base side and arranging the streak-like fine ridges in the resin skin. In this case, the fine line-shaped grooves forming the fine line-shaped protrusions are formed by using a mold arranged in accordance with the above on the molding surface on the joint side with the resin-based resin skin. For example, the groove is horizontally formed in the extrusion direction, and the tip is provided with an inclined portion on the surface side of the molding surface, and the flat surface following the groove is arranged to sneak or bite into the fine line-shaped protrusions to be molded. In this case, the streak-like fine ridges fall in the form of ridges on the resin base or the skin in a fallen or crushed state, so that the ridge-like fine ridges are used as the exposed elements. , The aluminum die mark tone line It is assumed that it is a streak pattern, the resin extruded material is replaced with the above-mentioned modified cross-section extruded material, and is an extruded material of a circular pipe, and a fine streak pattern is similarly expressed by co-extrusion. In accordance with the above, including molds for circular pipes, etc., resin products, resin extruded materials, resin bases, resin skins, streak-like fine ridges, fine streak patterns thereby, co-extrusion extruders, molds Each specific structure, shape, material, dimensions, application, coextrusion extrusion method, setting conditions, etc. of the mold, streak-like fine grooves, flat surface, etc., are of various forms unless they are contrary to the gist of the invention. can do.

It is the elements on larger scale which show the model of the surface state of a resin extrusion material. It is sectional drawing which shows the model of the longitudinal cross-section of a metal mold | die. It is an enlarged view which shows the model of arrangement | sequence of the streak-like fine groove | channel of a molding surface. It is an enlarged view which shows the model of the cross-section fine groove cross section of a molding surface intermediate position.

A Resin Extruded Material 10 Resin Base 11 Resin Skin 12 Lined Fine Projection 20 Mold 21 Molding Hole 22 Molded Surface 23 Lined Fine Groove 24 Flat Surface

Claims (3)

  A method for producing a resin extruded material comprising a resin base, a light-skinned resin skin with a smooth aluminum color tone, and an aluminum die mark-like fine streak pattern by coextrusion, the resin base or resin Using a mold in which the fine grooves arranged in a cone shape in the extrusion direction from the resin inlet to the intermediate surface and the flat surface from the intermediate position to the resin outlet on the molding surface for molding one resin in the skin, The fine line-shaped protrusions of the one resin formed by passing through the fine line-like fine grooves are sunk into the thickness of the one resin by passing through the fine line-like fine grooves and / or the flat surface, or the joining thereof. A method for producing an aluminum-like resin extruded material, characterized in that an aluminum die mark-like fine streak pattern is exposed by the streak-like fine ridges by disposing the other resin so as to bite over the boundary surface   2. The aluminum-like resin extruded material according to claim 1, wherein a mold is used in which the conical streak-like fine grooves are formed to have different lengths of mixed lengths from the resin inlet of the molding surface toward the intermediate position. Manufacturing method.   The resin base is a vinyl chloride resin, the resin skin is a styrene resin, the fine line grooves and the flat surface are arranged on the molding surface for molding the surface of the resin skin, and the fine line grooves on the molding surface And / or smoothing of the surface of the resin skin by passing through a flat surface, and the thickness of the fine streaks formed on the surface of the resin skin, or the penetration of the resin base beyond the boundary between the resin base and the resin. The manufacturing method of the aluminum-like resin extrusion material of Claim 1 or 2 characterized by the above-mentioned.

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