JP2007291617A - Synthetic resin-filled long metal material and method for producing the same - Google Patents

Abstract

The present invention relates to a synthetic resin capable of suitably preventing the occurrence of internal condensation and improving the rigidity of a window frame itself in a long metal material mainly used for window frame building materials. An object of the present invention is to provide a long metal filling material and a method for producing the same.
A step of injecting a non-foamable polyurethane resin-forming composition into a metal elongate frame is a plurality of laminating steps, and a composition formed by the steps after the first laminating step. A glass roving is disposed on the upper surface of the layer, and in the second laminating step, a polyurethane resin-forming composition is further injected after the glass roving is disposed, and then the polyurethane resin-forming composition is solidified.
[Selection] Figure 1

Description

  The present invention relates to a long metal material used for a window frame or the like, and more particularly to a dew condensation prevention metal long material having rigidity and heat insulation.

  Conventionally, metal sashes have been used as window frame building materials, and among them, aluminum sashes using aluminum that is light and corrosion-resistant as well as being easy to work are often used. However, although metal sashes such as aluminum have the above-mentioned advantages, they have high thermal conductivity. There is a drawback that condensation is likely to occur due to the heat of the air being easily released outside the room. Therefore, a building material is manufactured in which a gap inside a metal sash frame is filled with a synthetic resin such as a vinyl chloride resin as a heat insulating material.

  In general, when a synthetic resin is filled in a metal sash frame and solidified, the synthetic resin shrinks with time. As a result, a minute gap is formed again in the sash frame, and internal condensation occurs in the gap. This internal condensation once generated in the sash frame is not preferable because it hardly evaporates and causes mold and mites.

  The present invention has been made in view of the above prior art, and the present invention suitably prevents the occurrence of internal dew condensation in a long metal material mainly used for window frame building materials, and the window. It is an object of the present invention to provide a synthetic resin-filled long metal material capable of improving the rigidity of the frame itself and a method for producing the same.

  As a result of earnestly examining the technical problems described above, the present inventor made a process of injecting the polyurethane resin-forming composition into a metal elongated bowl-shaped frame as a plurality of laminating processes, and after the first laminating process, A glass roving is disposed on the upper surface of the composition layer formed in the step, and after the glass roving is disposed in the second laminating step, the polyurethane resin-forming composition is further injected, and then the polyurethane resin-forming composition is formed. As a result of solidifying the resin, it was found that the shrinkage of the resin over time is suitably prevented, and the present invention has been achieved.

  That is, according to the present invention, it is a metal long shape material in which a polyurethane long resin-like frame is filled with a polyurethane resin, and the polyurethane resin layer has a long fiber bundle along the longitudinal direction of the resin layer. A long metal material is provided. In the present invention, the polyurethane resin can be made non-foaming. The polyurethane resin preferably has a Shore D hardness of 60 or more. Furthermore, in the present invention, the long fiber bundle can be glass roving.

  Further, in another configuration of the present invention, a step of pouring a polyurethane resin-forming composition into a long metal frame made of metal to form a first composition layer, and a surface of the first composition layer An elongated metal bundle comprising: a step of disposing a long fiber bundle; and a step of pouring the polyurethane resin-forming composition further on the first composition layer to form a second composition layer. A manufacturing method is provided.

  As described above, according to the present invention, a long metal material that has rigidity and heat insulation properties and can suitably prevent the occurrence of internal condensation when used in a window frame, and a method for manufacturing the same. Is provided.

  Hereinafter, the present invention will be described with reference to embodiments shown in the drawings, but the present invention is not limited to the embodiments shown in the drawings. FIG. 1 shows a perspective view of a synthetic resin-filled long metal material 10 of the present invention (hereinafter referred to as a long metal material 10). As shown in FIG. 1A, the long metal material 10 is made of a metal cage-like frame material 12 filled with a non-foaming polyurethane resin 14. The polyurethane resin 14 preferably has a hardness equal to or higher than a predetermined value so that when the long metal member 10 is used as a building material such as a window frame, the building material can have a suitable rigidity. . In the present invention, the metal bowl-like frame member 12 is preferably made of aluminum that is lightweight, easy to process, and excellent in corrosion resistance. In the present invention, the polyurethane resin 14 preferably has a Shore D hardness of 60 or more, and more preferably has a Shore D hardness of 80 or more.

  FIG. 1B is a diagram showing a configuration inside the frame of the long metal shape member 10. As shown in FIG. 1B, a glass roving 16 is embedded in the polyurethane resin 14 in the frame of the long metal member 10 along the longitudinal direction of the frame member 12. The glass roving 16 in the present invention is obtained by bundling glass fibers in a columnar shape with a predetermined diameter. In the present invention, the number of glass fibers included in one bundle of glass rovings may be 500 to 5000. The diameter of the glass roving can be 5 to 50 μm. In the present invention, one or more bundles of glass rovings 16 can be set, and the mass ratio of the polyurethane resin 14 and the glass roving 16 filled in the long metal material 10 (polyurethane resin 14 / glass roving 16). ) Can be 50/50 to 97/3. In the long metal material 10 of the present invention, the glass roving 16 is included along the longitudinal direction of the frame member 12, that is, along the longitudinal direction of the polyurethane resin 14, thereby suppressing the shrinkage of the polyurethane resin 14 over time. Is done.

  FIG. 2 is a block diagram showing the manufacturing process of the long metal profile 10 of the present invention. In the long metal material of the present invention, a composition that forms a non-foaming polyurethane resin is filled inside a metal frame material so as to impart rigidity suitable as a building material. The non-foamable polyurethane resin-forming composition to be filled is prepared by mixing a polyol, an isocyanate, and a urethanization catalyst. As the polyol, a polyol premix composed of plural kinds of polyols having different average functional group numbers and number average molecular weights can be used. The blending ratio of polyol and isocyanate is preferably adjusted so that the isocyanate index is 100 in order to ensure the hardness of the forming resin. The process of pouring the non-foaming polyurethane resin forming composition (hereinafter referred to as the resin forming composition) prepared by the above-described procedure into a plurality of stages in a metal elongate frame will be described below.

  FIG. 3 is a diagram showing a cross-section in the width direction of the long metal member 10 in order to explain the above-described laminating process of the resin-forming composition. In the first laminating step, the resin-forming composition adjusted by the above-described procedure is poured into the metal bowl-shaped frame material 12 shown in FIG. 3A, and as shown in FIG. When the liquid level of the resin-forming composition reaches approximately half of the height direction of the metal bowl-shaped frame member 10, the inflow of the resin-forming composition is temporarily stopped to form the first composition layer 14a. To do.

  After the first laminating step, as shown in FIG. 3C, the glass roving 16 is quickly left on the surface S of the first composition layer 14 before the composition is cured. In the present invention, it is preferable to arrange the glass roving 16 so that the surface S of the first composition layer 14 is divided into two in the width direction and along the center line extending along the longitudinal direction of the composition layer 14. When the glass roving 16 is arranged, it is preferable to arrange the glass roving 16 so as to be symmetrical with respect to the center line in order to prevent deformation such as warping after curing.

  Note that the step of standing the glass roving 16 may be performed for each bundle or a plurality of bundles may be performed together. In order to accelerate curing, a long shape material may be placed on a belt conveyor to which a heating device may be added, and the polyurethane resin-forming composition may be continuously injected and the glass roving may be left standing.

  After the glass roving 16 is allowed to stand, in the second stacking step shown in FIG. 3D, the resin-forming composition is further poured from above the first composition layer 14a to the vicinity of the upper end of the frame member 12, and the second The composition layer 14b is formed. As mentioned above, regarding the manufacturing process of the long metal material 10 of the present invention, the embodiment in which the resin-forming composition is poured in two stages has been described, but in the present invention, the composition layer is limited to two layers. Instead, the resin-forming composition can be divided into three or more stages to form three or more composition layers. After the above-described laminating step is completed, the metal long profile 10 of the present invention is manufactured by curing and curing at room temperature for one day or more.

  Hereinafter, although the metal elongate shape material 10 of this invention is demonstrated more concretely using an Example, this invention is not limited to the Example mentioned later.

(Adjustment of resin-forming composition)
Two types of polyols (PPG1, PPG2) and dioctyltin diurarate as a urethanization catalyst were mixed to prepare a polyol premix. The adjusted polyol premix and the isocyanate were mixed at a blending ratio such that the isocyanate index was 100 under an atmospheric temperature of 22 ° C. to prepare a polyurethane resin-forming composition. The following table shows the specifications and blending ratio (mass ratio) of the polyol, catalyst, and isocyanate used.

(Casting process for aluminum frame material)
Formed polyurethane resin from the upper part of the aluminum channel (height 10mm x width 12mm x length 1000mm, wall thickness 1mm, AC-10, Hikari Mall Co., Ltd.) Half of the composition was poured until the liquid level reached half the height of the aluminum channel, and then glass roving (TGFR-P4400-366, GRP Japan Co., Ltd.) was applied before the polyurethane resin-forming composition was cured. It was set gently along the center line in the width direction of the aluminum channel. Furthermore, the remainder of the polyurethane resin-forming composition was poured from above onto the vicinity of the upper end surface of the aluminum channel, and after the polyurethane resin-forming composition was cured, it was further cured at room temperature for 1 day. The number of sets of glass roving was set in a range of 1 to 3 to produce three types of long metal materials 10 as Examples 1 to 3, and in addition, a comparative example was prepared without setting glass roving. .

(Hardness evaluation test)
The Shore D hardness was 85 when the Shore D hardness was measured by applying a D-type hardness meter to the resin surface of the long metal material 10 which had been allowed to stand at room temperature for 1 day to cure the resin.

(Filling material shrinkage test)
After applying a release agent to the inside of an aluminum channel (height 10 mm x width 12 mm x length 1000 mm, wall thickness 1 mm, AC-10, Hikari Mall Co., Ltd.), the same procedure as described above The polyurethane resin-forming composition was injected and the glass roving was allowed to stand. After the polyurethane resin-forming composition was cured, the cured polyurethane resin containing glass roving was taken out from the aluminum channel after further curing at room temperature for 1 day. After this cured resin was allowed to stand for 6 hours under a temperature condition of −20 ° C., and after 14 cycles of a cycle of still standing for 6 hours under a temperature condition of 50 ° C., that is, after 7 days had elapsed, The shrinkage (%) in the longitudinal direction was measured. The relationship between the number of glass rovings set and shrinkage (%) is shown in the following table. The shrinkage rate (%) was expressed as a percentage of the shrinkage amount (mm) in the longitudinal direction of the polyurethane resin after 7 days to the length (mm) in the longitudinal direction of the polyurethane resin after 1 day of curing.

  From the above-described examples, it is shown that, in the long metal material 10 of the present invention, the shrinkage with time is remarkably prevented as compared with the conventional synthetic resin-filled metal long material, At the same time, it has been shown that the long metal material 10 of the present invention can impart rigidity suitable as a building material.

  As described above, according to the present invention, a synthetic resin-filled metal long shape material that has rigidity and heat insulation and can suitably prevent the occurrence of internal condensation when used in a window frame. And a method of manufacturing the same. The long metal material of the present invention is expected to be used as a part of general building materials represented by window frame materials and structural building reinforcements.

The perspective view of the synthetic resin filling type | mold metal long shape material 10 of this invention. The block diagram which showed the manufacturing process of the synthetic resin filling type | mold metal long shape material 10 of this invention. The figure which shows the cross section of the width direction of the synthetic resin filling type | mold metal long elongate material 10 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Synthetic resin filling type metal long shape material, 12 ... Frame material, 14 ... Polyurethane resin, 16 ... Glass roving

Claims (5)

  A metal long shape material in which a polyurethane long resin-like frame is filled with a polyurethane resin, and the polyurethane resin layer encloses a long fiber bundle along the longitudinal direction of the resin layer. .   The long metal material according to claim 1, wherein the polyurethane resin is non-foaming.   3. The long metal profile according to claim 1, wherein the polyurethane resin has a Shore D hardness of 60 or more.   The long metal shape material according to claim 1, wherein the long fiber bundle is glass roving. A step of pouring a polyurethane resin-forming composition into a metal long rod-shaped frame to form a first composition layer; a step of disposing a long fiber bundle on the surface of the first composition layer; And a step of further pouring the polyurethane resin-forming composition from above the first composition layer to form a second composition layer.

Images