JP5606783B2 - Aluminum building materials such as joinery and structural materials - Google Patents

Description

  The present invention is suitable for reducing condensation caused by a temperature difference between the inside and outside of the room, such as a sash frame, a sash wall, a curtain wall frame, a door, a door frame, a pillar or a beam in a solarium or a study room. The present invention relates to aluminum building materials such as usable fittings and structural materials.

  As a countermeasure against the dew condensation that occurs in this type of aluminum building material, for example, Patent Document 1 below uses a heat insulating layer on the indoor side of hard or soft vinyl chloride, a heat insulating layer in the middle of a styrene foam board, and an inner adhesive layer with a double-sided extending tape. A heat insulating plate laminated in three layers is adhered to an aluminum building material, in particular, an indoor exposed portion of a sash frame by the adhesive layer, thereby covering and suppressing the occurrence of condensation. 2 comprises an aluminum building material, in particular a sash frame, composed of a frame body of aluminum extruded material, an indoor frame and a cover frame of synthetic resin extruded material such as vinyl chloride and acrylic resin, and the indoor side upright piece of the frame body A covering cover is provided so as to be sandwiched between the indoor frame and the cover frame to similarly suppress the occurrence of condensation.

JP 2009-243194 A JP 2002-180752 A JP 2006-326907 A

  However, as in Patent Document 1, the aluminum building material is covered with a heat-insulating plate or the like, and as in Patent Document 2, the aluminum building material is composed of an aluminum extruded material and a synthetic resin extruded material, and the indoor side is formed. Even if the products covered with synthetic resin extrusions can prevent the formation of condensation, they do not have aluminum texture on the indoor side of the aluminum building materials, and they are post-processed for these covers and the use of different types of extruded materials Therefore, the production of aluminum building materials may become complicated, and the cost of cover materials may increase significantly.In light of the use and cost of aluminum building materials, these measures to prevent condensation It cannot always be appropriate.

  Moreover, even if it can be assumed that the aluminum building material is covered with a liquid transport film used in a different field as in Patent Document 3 instead of the heat insulating plate, the aluminum texture is maintained in this case. Although there is a possibility that it will be obtained, there is still a possibility that production complexity and cost increase will occur as in the case of Patent Documents 1 and 2 above.

  The present invention has been made in view of such circumstances, and the problem to be solved is to improve the adhesion state of the condensed water while allowing the generation of the problem of condensation unavoidably caused by aluminum. An object of the present invention is to provide aluminum building materials such as joinery and structural materials that can be used universally regardless of the purpose by eliminating the granular noticeability.

In line with the above-mentioned problems, the aluminum extruded material used for the aluminum building material is formed with a large number of fine condensation reducing grooves on the entire surface or the exposed surface on the indoor side, and the aluminum extruded material is formed by capillary action of the condensation reducing grooves. Condensation water generated in the vertical orientation can be freely sent in the longitudinal direction, and in the horizontal orientation, it can be diffused in the longitudinal direction to allow condensation, but to ensure the hydrophilicity of the aluminum profile. By improving the adhesion state of the dew condensation water adhering to the aluminum shape material, eliminating the conspicuousness due to the granularity, and ensuring the dew condensation reducing action, that is, the invention according to claim 1, Aluminum with a large number of fine condensation reduction grooves on the entire surface in the longitudinal direction, and a vertically placed arrangement that feeds condensed water in the longitudinal direction and a lateral placement that diffuses condensed water in the longitudinal direction by capillary action. it is formed using an extrusion material The condensation reduction grooves are arranged by extrusion molding of an aluminum extruded material, the depth of the condensation reduction grooves of the aluminum extrusion material is 20 to 300 μm, and the groove width of the condensation reduction grooves of the aluminum extrusion material is It is an aluminum building material such as a joinery or a structural material, characterized in that it is 100 to 500 μm, and the peak width adjacent to the dew condensation reducing groove is 30 to 100 μm .

According to a second aspect of the invention, also in addition to the above, claim 1, characterized in that the aluminum extrusions arranged the condensation reduction grooves, obtained by forming comprises an anodized film layer and the heat-cured coating film layer Aluminum construction materials such as joinery and structural materials described in 1.

The invention according to claim 3, like in addition to the above, joinery according to claim 1 or 2, characterized by comprising a condensation reduction groove of the aluminum extrusions formed in trapezoidal section to a circular arc cross sectional shape Aluminum building materials such as structural materials.

In addition to the above, when the invention according to claim 4 is provided with the anodized film layer and the thermosetting film layer on the aluminum extruded material, the thermosetting film layer is a hydrophilic layer. Therefore, compared with the case of using a normal thermosetting film layer not provided with this, it can be ensured that the effect of reducing condensation is more effective. The layer is a thermosetting coating layer that has been subjected to a hydrophilic treatment, and is an aluminum building material such as a joinery or a structural material according to claim 1, 2, or 3 .

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

  Since the present invention is configured as described above, the invention described in claim 1 is formed by forming a large number of minute condensation reduction grooves on a part of the entire surface of the aluminum extruded material used for the aluminum building material or the exposed surface on the indoor side. Due to the capillarity of the dew condensation reducing groove, when the aluminum extruded material is placed vertically, the condensed water generated in this aluminum can be sent in the longitudinal direction, and when placed horizontally, it can be diffused in the longitudinal direction to generate condensation. However, by ensuring the hydrophilicity of the aluminum profile, the adhesion state of the condensed water adhering to the aluminum profile is improved, the conspicuousness due to the granularity is eliminated, and the effect of reducing condensation is secured. Condensation problems that are unavoidable due to the fact that it is made of aluminum can be used universally regardless of the purpose by allowing its generation but improving the adhesion of condensed water and eliminating the noticeable granularity. Like fittings It is possible to provide an aluminum building materials of the structural material and the like.

In addition to the above, the invention described in claim 1 is characterized in that the dew condensation reducing groove is formed at the same time as the extrusion of the aluminum extruded material and arranged so as to reduce the amount of condensed water on the aluminum extruded material. By eliminating the need for processing, it is possible to ensure the effect of reducing condensed water at as low a cost as possible. In addition, the dew condensation reducing groove can have a groove depth having a preferable form, and the condensation reducing action can be effectively ensured. Further, the dew condensation reducing groove having a preferable groove width can effectively ensure the dew condensation reducing effect. In addition, the peak width adjacent to the dew condensation reducing groove can be a preferable form, and the dew condensation reducing action can be effectively ensured.

In addition to the above, the invention according to the second aspect of the invention secures the surface treatment performance such as corrosion resistance and weather resistance while maintaining the above-mentioned dew condensation reducing effect by subjecting the aluminum building material to a surface treatment according to a conventional method. Can be.

In addition to the above, the invention described in claim 3 can ensure the capillarity of the dew condensation reducing groove satisfactorily and effectively ensure the dew condensation reducing action.

In addition to the above, the invention described in claim 4 uses an ordinary thermosetting film layer that does not include the anodized film layer and the thermosetting film layer in the aluminum extruded material. Compared with the case where it was, it can ensure more effectively the dew condensation reduction effect.

It is a rear view of the indoor side of a window sash. It is a partial expanded sectional view of the aluminum extrusion material which shows the shape of a condensation reduction groove | channel.

  In the following, the present invention will be described in more detail with reference to the example of the drawings. In FIG. 1, reference numeral 1 denotes an aluminum building material such as a joinery or a structural material formed using an aluminum extruded material. It is a sash provided with a sash frame 11 and a sash door 12 in which glass is attached to a sash bar 13 so as to be opened and closed in a sliding manner by being installed on a window. Condensation reduction grooves 2 are arranged along the entire length in the longitudinal direction so that a vertical arrangement in which condensed water is fed in the longitudinal direction and a horizontal arrangement in which the condensed water is diffused in the longitudinal direction are made free by capillarity. In this example, the dew condensation reducing groove 2 of the aluminum extruded material is disposed on the surface of the sash frame 11 and the sash rod 13, particularly on a part of a single surface or a plurality of surfaces exposed on the indoor side, The aluminum extrudate is provided with an anodized film layer and a thermosetting coating layer formed on the aluminum extrusion material. In this example, the thermosetting coating layer is a thermoset that has been subjected to a hydrophilization treatment. As a coating layer.

  In this example, the dew condensation reducing groove 2 of the aluminum extruded material is disposed by extrusion molding of the aluminum extruded material. That is, the dew condensation reducing groove 2 can be formed by post-processing of the aluminum extruded material, for example, by subjecting the extruded aluminum extruded material to fine etching on the surface by, for example, performing a photoetching process. Although it is possible, in this example, during extrusion molding of the aluminum extruded material, the die for the condensation reducing groove is formed on one or a plurality of surfaces exposed to the indoor side of the molding die used for the extrusion molding. This is formed by arranging the surface and simultaneously forming with the extrusion of the aluminum extrudate, and this completes the extrusion of the aluminum extrudate without any post-processing after forming the aluminum extrudate. In particular, the condensation reduction groove 2 is formed.

  The dew condensation reducing groove 2 formed on the aluminum extruded material needs to exhibit a good capillary phenomenon, and if it is suitable for the capillary phenomenon, it can be used as the sash frame 11 and the sash ridge 13, When placed vertically, the liquid feed in the longitudinal direction, that is, drops of condensed water can be lost, and the entire surface of the aluminum extruded material can be dropped downward to make it wet. At the time of arrangement, diffusion in the longitudinal direction, that is, droplets of condensed water are also lost, and the entire surface of the aluminum extruded material can be made to flow downward so as to be in a wet state.

  At this time, the cross-sectional shape of the dew condensation reducing groove 2 can be an appropriate shape such as a triangle, a quadrangle, a trapezoid or a circle, but in this example, it is formed in a trapezoidal shape, for example. The dew condensation reducing groove 2 may affect the degree of capillarity also depending on the groove depth, groove width, and crest width adjacent to the dew condensation reducing groove. The preferred groove depth, groove width, and peak width adjacent to the condensation-reducing groove were studied, including the relationship with capillary action, in particular, the performance of the liquid transport and diffusion of the condensed water by experiment.

  As a result, the depth of the condensation reduction groove 2 in the aluminum extruded material is preferably 20 to 300 μm, and the width of the condensation reduction groove 2 in the aluminum extruded material is 100 to 500 μm. It was also found that the width of the peak adjacent to the condensation reduction groove in the extruded aluminum material is preferably 30 to 100 μm. Therefore, in this example, the groove depth, groove width, and peak width of the dew condensation reducing groove 2 formed on the surface exposed to the indoor side of the sash frame and sash rod in the sash A are within the respective ranges.

  That is, when the depth of the dew condensation reducing groove 2 is less than 20 μm, the groove depth is insufficient particularly in the case of having an anodized film layer and a thermosetting film layer, and the capillary action is sufficient. Condensed water flow in the case of vertical placement and diffusion of the condensed water in the case of horizontal placement are both insufficient, and there is a tendency for droplets of condensed water to remain on the surface, and a condensation reduction groove However, when the groove depth exceeds 300 μm, there is no particular problem in the transport of condensed water and the diffusion of condensed water in the case of vertical placement. The dew condensation reducing groove 2 arranged in the extruded material is somewhat visible in a streak shape, and if the groove depth is further increased, there is a tendency for dust to be attached.

  In the case of horizontal placement, when the groove depth is less than 50 μm to 100 μm, there is a tendency that almost no condensed water droplets remain, but when the groove depth is less than 50 μm, some droplets tend to remain. Therefore, it is preferable that the dew condensation reducing groove 2 has a groove depth of 50 μm or more for the horizontally arranged one. Therefore, when it is assumed that the same aluminum extruded material is used for both the vertical placement and the horizontal placement as seen in the structural material other than the sash, the groove for ensuring the accuracy of forming the condensed water reducing groove 2 is provided. When it is necessary to make the depth common, it is particularly preferable that the groove depth is 50 to 300 μm, and more preferably 100 μm or more and 300 μm.

  If the groove width of the dew condensation reducing groove 2 is less than 100 μm, the groove width is insufficient and the capillary action is not sufficiently obtained, so that the condensed water is fed in the vertical arrangement and the dew condensation water in the horizontal arrangement. While both of the diffusions are insufficient and there is a tendency for droplets of dew condensation water to remain on the surface, if the thickness exceeds 500 μm, the groove width becomes excessive and the capillary action cannot be obtained sufficiently. It tends to leave drops. The groove width does not particularly affect the formation of the condensed water reducing groove 2, but is preferably 100 to 500 μm from the viewpoint of the capillary action.

  The crest width adjacent to the condensation reduction groove 2 in the aluminum extruded material is preferably 30 to 100 μm. That is, if the peak width adjacent to the condensation reduction groove 2 (the width of the peak in the valley of the condensation reduction groove 2) is less than 30 μm, the formation of the condensation reduction groove 2 tends to require high accuracy, while the condensation reduction groove 2 If the adjacent peak width exceeds 100 μm, the peak width becomes excessively large, and similarly, the liquid feed and diffusion of the dew condensation water are insufficient, and the condensation water droplets tend to remain. Therefore, it is preferable that the crest width adjacent to the condensation reducing groove 2 is 30 to 100 μm, and when it is necessary to ensure the accuracy of forming the condensed water reducing groove 2, It is particularly preferable that the crest width is 50 to 100 μm.

  In order to ensure the surface treatment performance as the sash A, the aluminum extruded material is provided with the anodic oxide coating layer and the thermosetting coating layer so as to cover the dew condensation reduction groove 2 formed by extrusion. At this time, the anodized film layer is formed by subjecting the aluminum extruded material having the condensation reduction grooves in this example to an anodization treatment in a sulfuric acid bath according to a conventional method. The coating layer is subjected to an anodizing treatment or, if necessary, a secondary electrolytic coloring treatment in a metal salt bath, followed by an electrodeposition coating treatment in an acrylic melamine paint bath and in a baking furnace. This is formed as an electrodeposition coating layer by subjecting the electrodeposition paint to thermosetting treatment.

  In this example, the anodized film layer is about 10 μm, for example, and the thermosetting film layer is about 10 μm, for example, and is thus placed in the condensation reduction groove 2 formed on the aluminum extruded material. The capillary action of the liquid feed and diffusion of the dew condensation water by the dew condensation reducing groove 2 is maintained as much as possible by the thermosetting coating film layer formed to be placed.

  Since the thermosetting coating film generally has a high water contact angle of about 70 ° or more, a dew condensation reducing groove is arranged in the aluminum extruded material. However, there is a possibility that the thermosetting coating film considerably inhibits the liquid feeding and diffusion due to the capillary action. Therefore, the thermosetting coating layer as the electrodeposition coating layer is subjected to a hydrophilic treatment. By applying the hydrophilization treatment, the possibility of inhibiting the capillary action of the condensation reduction groove 2 is eliminated, so that the condensation reduction groove 2 can exert its capillary action as effectively as possible. It is. The hydrophilization treatment is performed, for example, by applying a silica-based hydrophilic treatment, and the dehydration reduction action of the dew condensation reducing groove 2 is exhibited as high as possible by the hydrophilization treatment.

  As described above, the condensation reducing groove 2 is arranged on the exposed surface on the indoor side of the sash frame and / or the sash rod formed by the aluminum extruded material, particularly the aluminum extruded material provided with the anodized film layer and the thermosetting coating film layer. As a result, the sash A allows the generation of condensation, but improves the adhesion state of the condensed water, eliminates the granular droplets, and is unavoidable with the sash A using an aluminum extruded material with good thermal conductivity. The problem of dew condensation that occurs automatically can be solved. At this time, since condensation is allowed to occur, for example, if a condensation receiving member is installed in accordance with a conventional method at the vertical frame of the sash vertical frame and the lower end of the sash vertical gutter, condensate water is not conspicuous due to liquid feeding. If a condensate receiving groove is installed on the entire length in the longitudinal direction at the bottom of the sash horizontal frame and the lower end of the sash reed, even if the condensed dew condensation water overflows and flows downward due to gravity, Can be prevented from standing out.

  In the present invention, the condensation reduction groove 2 is formed by a large number of fine grooves parallel to the aluminum extruded material in the entire length in the longitudinal direction, and the condensation reduction groove is formed in the longitudinal direction of the aluminum extruded material so as to have a mesh shape, for example. It is possible to arrange the intersecting grooves so as to be orthogonal to each other, for example, by performing a photo-etching process, but in this case, compared to the dew condensation reducing grooves, in the vertical arrangement, slightly, In the horizontal arrangement, there is a possibility that the condensed water droplets sometimes remain, so it is necessary to arrange the intersecting grooves so that the condensed water reducing grooves are meshed. It cannot be said that it is effective.

  Aluminum extruded materials used for aluminum building materials are generally provided with an anodized film layer and a thermosetting film layer. The anodized film layer does not fill the condensation reduction groove and affects its capillary action. Therefore, the coating thickness can be set appropriately, and since the secondary electrolytic coloring does not affect the capillary action, the aluminum extruded material is subjected to secondary electrolytic coloring according to a conventional method. An anodized film layer can be formed. On the other hand, the thermosetting coating layer can be a high-performance thermosetting coating layer by suppressing the thickness as much as possible by using the electrodeposition coating layer. For example, when using a powder coating film layer suitable for coloring a coating film to form a colored thermosetting coating film layer, there is a tendency that the coating film thickness tends to increase. It is necessary to ensure the capillary action by covering and filling the condensed water reducing groove with the coating thickness, such as increasing the depth of the reducing groove.

  Aluminum building materials are formed by single or multiple aluminum extrusions used for applications that may cause condensation on the indoor side by causing a temperature difference between the inside and outside of the building to be exposed to the outside. In addition to the sashes, the present invention is suitable for curtain wall frames, doors, door frames, columns and beams in solariums and study rooms, panels for promoting the dripping of condensed water with built-in air conditioning pipes, etc. Applicable to.

  In carrying out the present invention including these, aluminum building materials, aluminum extruded materials, condensation reduction grooves, anodized coating layers, thermosetting coating layers, hydrophilization treatment shapes, structures, materials, arrangement forms, processing methods Various applications can be used without departing from the spirit of the invention.

  Two aluminum plates (AL1100) each having a thickness of 1.5 mm are subjected to photoetching to have groove depths of 20 μm, 40 μm, 100 μm, and 200 μm, groove widths of 150 to 300 μm, and a peak width adjacent to the condensation reduction groove of 50 μm. Four types of dew condensation reducing grooves having different groove depths were formed by setting the thickness to 100 μm. FIG. 2 shows a partially enlarged cross-sectional view of an aluminum extruded material showing the shape of the condensation reduction groove, which is drawn based on the cross-sectional shape of a microscope measurement having a groove depth of 100 μm. Each aluminum plate is formed with an anodic oxide coating layer of 10 μm and a thermosetting coating layer (clear electrodeposition coating layer) of 10 μm, and further subjected to a hydrophilization treatment by applying a silica-based hydrophilic agent. The water contact angle was set to about 10 ° on the flat surface, and two samples A to D were used for the dew condensation test.

  In the condensation test, the outdoor conditions are set to −10 ° C., the indoor conditions are set to 23 ° C., and the relative humidity is 60% using a condensation tester. Each of the two samples A to D is vertically printed on the indoor sash using double-sided tape. The samples A to D were each observed for the dew condensation state. Observations are made after 1 day of installation. Visual observations indicate that no condensation water droplets are left at all, ◎ those with little condensation water droplets are left, and those with few condensation water droplets are left behind. A four-step evaluation was performed with x indicating that a large amount of condensed water droplets remained. For comparison, two samples E from which the condensation reducing grooves and the hydrophilization treatment were omitted were prepared, and the condensation state was observed and evaluated in the same manner. The results are shown in Table 1.

Comparative Example 1

  Similarly, an anodized film layer and a thermosetting coating layer are formed on the aluminum plate (AL1100) having a thickness of 1.5 mm, and the surface of the thermosetting coating layer is a heat insulating coating (a heat insulating coating manufactured by Dainippon Paint Co., Ltd.) Eco-cool) was applied to a thickness of 150 μm to form two samples F, and the condensation state was observed and evaluated in the same manner. The results are also shown in Table 1.

Comparative Example 2

  In the same manner as in the first embodiment, the orthogonal grooves are arranged transversely in the same manner as the condensation reducing grooves in which the groove depth is 50 μm, the groove width is 200 μm, and the crest width adjacent to the condensation reducing grooves is 50 μm, and meshed vertically and horizontally by photoetching. The sample was formed into two samples G, and the condensation state was observed and evaluated in the same manner. The results are also shown in Table 1.

  As shown in Table 1, in the vertical arrangement, any of sample A (groove depth 20 μm), sample B (groove depth 40 μm), sample C (groove depth 100 μm), and sample D (200 μm) Even if it is, there will be no condensation water droplets left. However, when it is placed sideways, in sample A (groove depth 20 μm), some condensation water droplets remain, sample B (groove depth 40 μm), sample C (groove depth). The result was hardly remaining at a depth of 100 μm and hardly remaining at the sample D (200 μm). On the other hand, in Sample E (groove depth 0), a large amount of condensed water droplets remained in both the vertical and horizontal positions, and the dew condensation was generally observed on the sash room installed in the north window. In Sample F (insulating paint application), no condensation water was observed in both the vertical and horizontal placements after a short period of observation, but a large amount of condensed water droplets remained after one day. In Sample G (mesh-shaped fine groove), almost no condensed water droplets remained in the vertical arrangement, but a considerable amount of condensed water droplets remained in the horizontal placement ( Since it is not so large that it remains in large quantities, Table 1 shows Δ to × as an intermediate between Δ and ×).

  Therefore, forming a dew condensation-reducing groove having a groove depth of about several tens of grooves on an aluminum plate corresponding to an aluminum extruded material, forming an anodized film layer and a thermosetting film layer thereon, and forming the thermosetting film By applying hydrophilization treatment to the layer, it is possible to obtain the dew condensation reducing effect by condensate water transfer in the vertical arrangement by capillary action and the diffusion of the dew condensation water in the horizontal arrangement. The depth of the groove is set to 20 μm or more, and in the case of the horizontal arrangement, a slight amount of condensed water droplets may remain, but this does not hinder the practicality of the groove. Therefore, the groove depth is preferably 50 μm or more, particularly preferably 100 μm or more.

1 Sash 11 Sash Frame 12 Sash Door 13 Sash Fence 2 Condensation Reduction Groove

Claims (4)

Aluminum with a large number of fine condensation reduction grooves on the entire surface in the longitudinal direction, and a vertically placed arrangement that feeds condensed water in the longitudinal direction and a lateral placement that diffuses condensed water in the longitudinal direction by capillary action. Ri Na form using an extrusion material,
The dew condensation reducing groove is arranged by extrusion molding of an aluminum extruded material,
The depth of the condensation reduction groove of the aluminum extruded material is 20 to 300 μm,
The dew condensation reducing groove width of the aluminum extruded material is set to 100 to 500 μm,
Aluminum building materials such as joinery and structural materials, wherein the width of the mountain adjacent to the dew condensation reducing groove is 30 to 100 μm . 2. An aluminum building material such as a joinery or a structural material according to claim 1 , wherein the aluminum extrusion material in which the dew condensation reducing groove is disposed is provided with an anodized film layer and a thermosetting film layer. The aluminum building material such as a joinery or a structural material according to claim 1 or 2 , wherein the dew condensation reducing groove of the aluminum extruded material is formed in a cross-sectional trapezoidal shape or a cross-sectional arc shape. The aluminum building material such as joinery and structural material according to claim 1, 2 or 3 , wherein the thermosetting coating film layer of the aluminum extruded material is a thermosetting coating film layer subjected to a hydrophilic treatment.

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