JP2011256649A - Architectural sheet and method for infilling thermal insulation material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an architectural sheet and a method for infilling a thermal insulation material using the architectural sheet capable of reducing construction work load in a blowing method.SOLUTION: The architectural sheet 1 which is, in structuring an interior wall, stretched between a plurality of columns supporting the wall and holds a thermal insulation material blown into a space between the plurality of columns comprises: a holding section (11) consisting of one or a plurality of sheets having a first region which is impervious to water vapor and a second region (12) which has a lower airtightness than the first region; and a covering section (13) which can be superimposed on the second region. The covering section is to improve the airtightness of the second region by being superimposed on the same.

Description

  A building sheet that is stretched between a plurality of pillars that support the wall when forming an indoor wall and holds a heat insulating material blown into a space between the plurality of pillars, and the building sheet. The present invention relates to a method for enclosing heat insulation.

  One of the methods for improving the heat insulation effect of a house and improving the efficiency of air conditioning is a blowing method in which a heat insulating material is blown. This method is a method of filling the space that later becomes a wall with the heat insulating material blown out with air, and even if this space is a narrow space formed when a bracing is provided between the columns, the heat insulating material is not a gap. The heat insulation effect can be enhanced by filling without. Currently, a technique for efficiently performing the filling operation has been proposed (for example, Patent Document 1).

JP-A-9-32143

  In the blowing method, when the space that becomes the wall later is filled with a heat insulating material, the space to be filled with the heat insulating material is once covered with a highly breathable sheet such as a non-woven fabric so that the pressurized supply air blown out together with the heat insulating material is The sheet is discharged using the breathability of the sheet. After that, it is covered with a highly airtight sheet so that the filled heat insulating material does not touch the air inside the house. That is, it takes time to construct a total of two sheets, a highly air permeable sheet and a highly airtight sheet. Although the technique of limiting the magnitude | size of a heat insulating material and making it easy to blow in is disclosed by the said patent document 1, it has not resulted in reducing the said effort.

  In view of the above problems, an object of the present invention is to provide a building sheet that can reduce the labor of construction in a blowing method and a heat insulating material encapsulating method using the sheet.

In order to solve the above problems, the architectural sheet of the present invention is
In the building sheet that holds the heat insulating material that is stretched between the plurality of pillars that support the wall when forming the indoor wall and blown into the space between the plurality of pillars,
A holding portion made of one or a plurality of sheets provided with a first region that does not pass water vapor and a second region that is less airtight than the first region;
A cover that can be superimposed on the second region,
The covering portion is overlapped with the second region to improve the airtightness of the second region.

  According to this building sheet, the pressure supply air blown out together with the heat insulating material in the blowing method is discharged from the second region, and the auxiliary sheet is overlapped with the main body sheet to cover the heat insulating material with a highly airtight sheet. Can do.

  In addition, a pillar here may be building materials, such as a through-column and a pipe column, in addition to an inter-column and a trunk edge. Moreover, the raw material of building materials is not limited, For example, it may be a wooden pillar or a steel frame.

Here, the building sheet is
The second region may be one in which a hole is formed.

  According to this building sheet, the pressurized supply air can be discharged from the hole formed in the second region.

In addition, the building sheet is
The second region may be formed of a net.

  According to this building sheet, it is possible to discharge the pressurized supply air when the net is combined and the heat insulating material is blown.

Furthermore, the building sheet is
The first region is a region formed by one or more airtight sheets,
The second region may be a region in which a hole is formed in an airtight sheet that forms the first region.

  According to this building sheet, the second region and the first region can be integrally formed.

In addition, the building sheet is
In the second region, the total area of the formed holes may be 2.5% or more and 6.0% or less with respect to the area holding the heat insulating material.

  According to this building sheet, it is possible to appropriately fill the heat insulating material while discharging the pressurized supply air blown out together with the heat insulating material by the blowing method. The area for holding the heat insulating material is, for example, the area between adjacent edges of adjacent columns.

In addition, the building sheet is
You may have a 1st sheet | seat body which forms a part of said 1st area | region and the said cover part in the indoor side.

  According to this building sheet, it is possible to hold the heat insulating material regardless of the state of the second region after filling by stretching the first sheet body having high hermeticity between the columns. it can.

In addition, the building sheet
It has the 2nd sheet object which consists of one or a plurality of sheet-like members which form the part other than the field contained in the 1st sheet among the 1st field, and the 2nd field located in the space side. There may be.

In addition, the building sheet is
The first sheet body and the second sheet body may be bonded.

Furthermore, the building sheet is
The second region is a band-like region extending in one direction,
The covering portion may be a belt-shaped member disposed along the second region.

  According to this building sheet, since the second region has a strip shape, the building sheet in a roll shape can be provided.

In addition, the building sheet is
A plurality of combinations of the second region and the covering portion covering the second region may be provided at intervals so that the extending directions of the combinations are parallel to each other.

  According to this building sheet, when a plurality of places are filled with the heat insulating material, the space filled with the heat insulating material can be partitioned at a time.

In order to solve the above problems, the method of encapsulating a heat insulating material of the present invention is
Using the above-mentioned building sheet, when forming an indoor wall, a method for encapsulating a heat insulating material in a space between a plurality of pillars supporting the wall,
A stretching step of stretching the building sheet between the pillars;
A filling step of filling the space with the heat insulating material;
A sealing step of superimposing the covering portion on the second region.

  According to this heat insulating material sealing method, the heat insulating material can be sealed with little effort by using the building sheet in the blowing method.

  ADVANTAGE OF THE INVENTION According to this invention, the construction sheet | seat which can reduce the effort of construction in a blowing construction method, and the heat insulating material enclosure method using this sheet | seat can be provided.

It is a figure which shows an example of the place where a blowing construction method is constructed. It is a figure which shows a mode that the space filled with a heat insulating material was partitioned off. It is sectional drawing which shows a mode that the heat insulating material is filled. It is a figure which shows the state in which the heat insulating material was piled up to the hole opened on the net. It is a figure which shows a mode that the heat insulating material was filled in the space. It is a figure which shows the external appearance of the building sheet of this embodiment. It is a figure which shows the structure of the sheet | seat for construction of this embodiment. It is a figure which shows a mode that the sheet | seat for construction of this embodiment is used. It is a figure which shows a mode that construction of the building sheet of this embodiment was completed. It is a figure which shows the result of the experiment using the sheet | seat for construction of this embodiment with a table | surface. It is sectional drawing which shows the modification of the building sheet of this embodiment. It is sectional drawing which shows the modification of the sheet | seat for constructions different from FIG.

  Hereinafter, in describing the building sheet of the present invention, first, a rough procedure of the blowing method will be described.

  In the blowing method, when a heat insulating material is filled into a space that later becomes a wall, the space filled with the heat insulating material is covered with a breathable net (also referred to as an air vent net). With this breathable net, only the heat insulating material can be filled while discharging the pressurized supply air when the heat insulating material is blown. This breathable net is generally made of nylon, tetron, polypropylene, or other chemical fiber in a net shape, but other materials such as non-woven fabrics and composites of vented nets and non-woven fabrics are also used. Any breathable material that can withstand the stress associated with the insulation filling, such as a material.

  After the heat insulating material is filled, the breathable net is covered with a moisture-proof and air-tight sheet for the purpose of preventing dew, so that moisture damage does not occur due to indoor and outdoor temperatures and humidity. Details of this procedure will be described below with reference to the drawings.

  FIG. 1 is a diagram illustrating an example of a place where a blowing method is applied.

  In this figure, a base BA of the house, two pillars PI fitted to the foundation BA, and a beam BE fitted to these pillars are shown. These foundations BA, pillars PI, and beams BE are made of wood, and walls are formed after the space surrounded by these building materials is filled with a heat insulating material. The term “insulating material” as used herein refers to a material that has a heat insulating property that prevents heat conduction and that can be blown by pressurized supply air. For example, massive or granular heat insulating materials suitable for blowing methods such as glass wool, rock wool, and fiber blown heat insulating materials such as cellulose fibers, urethane foam crushed materials, polystyrene foam crushed materials, etc. Even if it is a material, what is necessary is just to satisfy | fill heat insulation performance with the said requirement and the thing which does not interfere with operation | movement of a blowing apparatus. Moreover, a pillar here means building materials, such as a space | interval pillar and a through pillar, and is used by this meaning in the following description unless there is particular description.

  A moisture-permeable waterproof sheet BS, which is a member using a structural plywood or the like, is stretched on the boundary of the outer wall side (outside the house) of this space. This moisture permeable waterproof sheet BS is waterproof and prevents water from entering from the outer wall side. Further, the moisture permeable waterproof sheet BS is capable of passing moisture, and dew condensation can be prevented by allowing moisture in the space filled with the heat insulating material to escape to the outer wall side. That is, it is possible to prevent the heat insulating material filled inside by the moisture permeable waterproof sheet BS from getting wet and deteriorating or generating mold.

  On the other hand, a breathable net NE having a breathability is stretched at the boundary on the inner wall side (inside the house).

  With these configurations, the space filled with the heat insulating material is partitioned, and the heat insulating material can be filled into the space. Hereinafter, the procedure for filling the heat insulating material will be described.

  FIG. 2 is a diagram illustrating a state in which a space filled with a heat insulating material is partitioned.

  FIG. 2A shows a state in which the air-permeable net NE is stretched to partition the space SP. Here, the needle ST is driven out using a gun tucker to fix the breathable net NE to the pillar PI. Although not shown in the figure, the upper end and the lower end of the breathable net NE are also fixed. FIG. 2B shows a hose HP connected to a device for blowing out a heat insulating material (hereinafter referred to as blow). The heat insulating material set in the blow is blown out vigorously through the hose HP together with the pressurized supply air. A hole HO1 is formed in a part of the air-permeable net NE shown in FIG. This hole is cut and opened to insert the blow hose HP.

  FIG. 3 is a cross-sectional view showing a state in which the heat insulating material is filled.

  In this figure, a part on the base BA side of the space SP in which the heat insulating material is enclosed is shown. A blow hose HP is inserted into the breathable net NE through the hole HO1, and the heat insulating material IN is blown out into the space SP together with the pressurized supply air from the blowout port. The pressurized supply air blown out at this time is discharged out of the space SP through the air-permeable net NE, but the particle size of the heat insulating material IN is larger than the mesh of the air-permeable net NE, so that it is scattered from within the space SP. Without falling, pile on the base BA. FIG. 3 shows the heat insulating material IN that floats in the space SP and the heat insulating material IN that is stacked on the base BA.

  FIG. 4 is a view showing a state in which the heat insulating material IN is accumulated up to the hole HO1 opened in the air-permeable net NE. When the heat insulating material IN is piled up to the vicinity of the height of the hole HO1, the blow hose HP is directed upward and the procedure for blowing up is performed. At this time, the heat insulating material IN may not be filled up to the beam BE, and a gap is generated in the heat insulating material IN. For this reason, the hole HO2 is newly opened at a position higher than the first hole HO1, the hose HP is inserted into the new hole HO2, and the sealing operation of the heat insulating material IN is continued. FIG. 4 shows a state in which this new hole HO2 has been opened.

  The wall of a house is generally around 2700 mm. In the blow construction of only one place in the hole HO1, the heat insulating material IN filled in the initial stage sinks due to its own weight, the heat insulating material IN collapses like an avalanche, or the heat insulating material IN filled with the net NE is used. There is a problem that a gap is generated without being able to hold firmly. For this reason, several holes are required.

  FIG. 5 is a diagram illustrating a state in which the heat insulating material IN is filled in the space SP.

  This figure shows a state in which three holes for filling the heat insulating material IN are opened (see HO1 to HO3 in the figure). According to the method described above, the heat insulating material IN is sufficiently filled in the space SP. Here, the moisture-proof and air-tight sheet PS is stretched over the breathable net NE. This moisture-proof and air-tight sheet PS is for preventing the occurrence of moisture damage indoors and outdoors. That is, the heat insulation effect can be maintained by using the heat insulating material IN that prevents heat conduction between the outer wall side and the indoor side, and the moisture-proof and airtight sheet PS that prevents dew condensation and the like due to airflow. After the heat insulation material IN and the moisture-proof and airtight sheet PS are installed, various inner wall materials such as a gypsum board can be installed to make a wall having a heat insulation effect.

  If only the moisture-proof and airtight sheet PS is used when filling the heat insulating material IN, it is difficult to discharge the pressurized supply air when filling the heat insulating material IN. For this reason, in the blowing method, a breathable net NE having a breathability is used to fill the heat insulating material IN. That is, since both the breathable net NE and the moisture-proof and air-tight sheet PS must be stretched, it takes time for construction. The architectural sheet of the present invention is for reducing this labor. Hereinafter, an embodiment of the building sheet will be described.

  FIG. 6 is a view showing the appearance of the building sheet of the present embodiment.

  The building sheet 1 shown in FIG. 6 includes a main body sheet 11 and an auxiliary sheet 13 bonded to the main body sheet 11 with an adhesive portion 14. The main body sheet 11 corresponds to an example of a holding portion of the present invention, and the auxiliary sheet 13 corresponds to an example of a cover portion of the present invention. The main body sheet 11 and the auxiliary sheet 13 are made of polyethylene having moisture resistance and airtightness (conforming to JIS A 6930-2008), but other materials (for example, moisture-proof and airtight with an improved heat shielding function by coating with aluminum) Sheet) as long as it has moisture resistance, airtightness, strength and durability equal to or higher than those. The main body sheet 11 has a right region 11R where the auxiliary sheet 13 is overlaid and a left region 11L where the auxiliary sheet 13 is not overlaid. These right region 11R and left region 11L are integrally formed of the same material. In the right region 11R of the main body sheet 11, there is a ventilation region 12 provided with ventilation holes, and the auxiliary sheet 13 can be overlaid on the ventilation region 12. The ventilation region 12 corresponds to an example of the second region of the present invention, and the region of the main body sheet 11 excluding the ventilation region 12 corresponds to an example of the first region of the present invention. The ventilation region 12 is a vertical belt-like region, and the building sheet 1 is stretched so that the ventilation region 12 extends in the vertical direction. It is preferable that the auxiliary sheet 13 has an area that can be fixed by being overlapped on the pillar in a state where the auxiliary sheet 13 is overlaid on the right side area 11R of the main body sheet 11 including the ventilation area 12. Here, the auxiliary sheet 13 is aligned at the right end of the main body sheet 11 Thus, an area to be fixed to the spacer is secured, and the main body sheet 11 and the auxiliary sheet 13 are overlapped with each other by 30 mm or more both vertically and horizontally. In addition, you may form the sheet | seat 1 for construction in roll shape so that the sheet | seat 1 for construction of suitable length can be used according to a tension place.

  FIG. 7 is a diagram showing the configuration of the building sheet of the present embodiment.

  FIG. 7A shows a front view of the building sheet 1 shown in FIG. Here, the width of the building sheet 1 is set to be slightly over 555 mm. This size can be used for many wooden buildings. The reason will be described below.

  In general wooden steel buildings, building materials called inter-columns are arranged to fix wall members between columns. The blowing method described above is a method of filling a heat insulating material between the pillars. In wooden construction, pillars and studs are standardized and are often constructed in a standardized manner. For example, the width of the standardized stud is about 30 to 50 mm. Moreover, when it constructs based on these standards, the space between the studs and the studs often becomes a space with a width of about 415 to 440 mm. Similarly, the horizontal width of the space between the columns and the inter-columns is often a space of about 380 to 400 mm. The width of the building sheet 1 is slightly over 555 mm because, in addition to the width of these spaces, a fastening margin of 60 mm (width between the width of the pillars 30 mm × 2) and a slight deviation are provided for fastening the left and right to the pillars and pillars. This is because of consideration. In addition, since the auxiliary sheet 13 has the horizontal width matched to the right end of the main body sheet 11, the auxiliary sheet 13 has a fastening allowance (more than 30 mm) for fastening to the stud.

  In addition, the width of the building sheet 1 is not limited to this length, and may be a width corresponding to the design. Here, the lateral width of the ventilation region 12 is 50 mm, but is not particularly limited to this width. Moreover, there is no restriction | limiting in particular about the vertical length, In the following description, it is sufficient length, and it shall be used by cutting off an excess part with the height of the space filled with a heat insulating material.

  FIG. 7B shows a cross section taken along line AA shown in FIG. In addition, in this figure, in order to make it easy to understand the position where the building sheet 1 is stretched, the pillar PI is also shown.

  This sectional view shows a state in which the main body sheet 11 and the auxiliary sheet 13 integrated with the main body sheet 11 are overlapped. A portion where the main body sheet 11 and the auxiliary sheet 13 are bonded is an adhesive portion 14. The bonding method is not limited, and may be, for example, an adhesive, a thermal welding, a bonding method having strength and durability, and a combination thereof.

FIG. 7C shows the shape of the hole 121 formed in the ventilation region 12. Here, 35 holes having a diameter of 7 mm are formed for a region having a width of 50 mm and a length of 100 mm. That is, the total area of the holes is about 1347 mm ² . On the other hand, if the region partitioning the heat insulating material is a region having a width of 450 mm and a length of 100 mm, the area is 45000 mm ² (450 mm × 100 mm). That is, a hole having an area of about 3% with respect to the area partitioning the heat insulating material is formed. The ratio of the pores is preferably in the range of 2.5% to 6.0%. When this ratio is less than 2.5%, it is difficult to discharge the pressurized supply air, and when it is higher than 6.0%, the filled heat insulating material is scattered in the room and it is difficult to work. In addition, there is no restriction | limiting in particular in the shape of a hole, For example, the shape of a semicircle may be sufficient, and the thing by a cut and the thing by a half cut may be sufficient.

  The material constituting the ventilation region 12 may be a material different from the material constituting the region other than the ventilation region 12. For example, a moisture-proof and air-tight sheet and a sheet having excellent breathability, which is made of a material different from that of the moisture-proof and air-tight sheet, are prepared, and these sheets are joined so that the sheet having excellent breathability becomes the ventilation region 12. 11 may be used. Further, the sheet having excellent air permeability may be in a mesh shape (for example, a net or a nonwoven fabric).

  FIG. 8 is a diagram illustrating a state in which the building sheet 1 of the present embodiment is used.

  FIG. 8A shows a state in which the building sheet 1 is stretched in the space shown in FIG. 1 (there are various dimensions, for example, a horizontal width of 450 mm). Here, in order to partition the space filled with the heat insulating material IN, the left and right sides of the building sheet 1 are fixed to the pillar PI, the beam BE, and the base BA with the needles ST punched out by the gun tacker. More specifically, the main body sheet 11 is fixed to the indoor side surfaces of the pillars PI, the beams BE, and the base BA so that the auxiliary sheet 13 is located on the indoor side with respect to the main body sheet 11. At this time, the end of the auxiliary sheet 13 is not fixed and is left as it is. The step of fixing the building sheet 1 described above corresponds to an example of the tensioning step of the present invention.

  FIG. 8 shows a state in which the left and right sides of the building sheet 1 are fixed with the needles ST and the hole HO1 for inserting the heat insulating material IN is opened. Although not shown in the figure, the upper end and the lower end are also fixed by the needle ST. The procedure for filling the heat insulating material IN inside from this state is the same as the procedure described with reference to FIGS. However, the point where the hole HO1 is opened is different in that it is limited to the range in which the auxiliary sheet 13 is overlapped. Further, it is necessary that the auxiliary sheet 13 does not hinder the discharge of the pressurized supply air from the ventilation region 12. For this reason, for example, the auxiliary sheet 13 may be lightly fixed to the left side 11 </ b> L of the main body sheet 11 with a tape or the like so as not to overlap the ventilation region 12. The step of filling the heat insulating material IN described above corresponds to an example of the filling step of the present invention.

  FIG. 8B shows a state in which the three holes HO1 to HO3 are opened and the heat insulating material IN is completely filled. When filling with the heat insulating material IN is completed, the auxiliary sheet 13 is overlapped on the ventilation region 12 side, and the end is fixed to the column with the needle ST (corresponding to an example of the sealing step of the present invention).

  Drawing 9 is a figure showing signs that construction of sheet 1 for construction of this embodiment was finished.

  As described above, the lateral width of the auxiliary sheet 13 is a length that matches the right end of the main body sheet 11 so that the auxiliary sheet 13 can be overlapped and fixed on the pillar in a state of being overlapped with the right region 11R of the main body sheet 11 including the ventilation region 12. (More than 30mm). That is, it has a snap margin of more than 30 mm. FIG. 9 shows a state in which the auxiliary sheet 13 is overlaid on the ventilation region 12 side, and the right end of the auxiliary sheet 13 is overlaid on the column and fixed with the needle ST. According to the standard of construction, the seam portion is fastened at intervals of about 200 to 300 mm using a gun tucker, and other points are fastened so that they can be stretched so as not to be loose or wrinkled. It may be temporarily fixed with a small number of needles ST and firmly fixed by a wall material (for example, gypsum board or dry wood) installed later.

  According to the building sheet 1 of the present embodiment described above, compared with the case where the two sheets of the breathable net NE shown in FIG. 1 and the moisture-proof and airtight sheet PS shown in FIG. Can be tensioned and filled with insulation. Moreover, the construction period can be shortened without sacrificing the heat insulation effect. In the above description, an example of construction in a wooden building has been described. However, the construction sheet of the present invention is not limited to the type of building material, and can be constructed by being fixed to a steel frame with an airtight tape, for example.

  Here, when the thermal insulation material IN is filled using the building sheet 1, it becomes a problem whether or not the pressurized supply air can be sufficiently discharged. This is because if the pressurized air supply cannot be sufficiently discharged, the construction must be carried out while suppressing the amount of blown air and the like, which takes time. In order to verify this problem, the results of experiments conducted by the inventors will be described with reference to FIG.

  FIG. 10 is a table showing the results of an experiment using the building sheet 1.

  This experiment generally assumes a space of 500 mm in width, 2000 m in length, and 100 m in depth as a space filled with a heat insulating material. In this space, a construction sheet 1 is stretched, and each of rock wool, glass wool, and cellulose fiber is placed. The time when the heat insulating material is filled is measured. Furthermore, vibration was applied after filling, and it was verified whether the filled heat insulating material would sink and a gap would be generated. FIG. 10 shows the number of experiments in the vertical direction, and the horizontal direction shows the weight, construction time, density, and the presence or absence of subsidence due to vibration. Yes.

  As shown in this figure, the filling of the heat insulating material is completed in a short time such as 67 seconds to 143 seconds. Since the time until the completion of the filling of the heat insulating material is short, it can be determined that the pressurized supply air is sufficiently discharged at the time of filling the heat insulating material and does not hinder the construction. Furthermore, since subsidence cannot be confirmed in the subsequent vibration test, it can be determined that the heat insulating material is filled at a sufficient density so that no gap is formed.

  In the above description, the case of construction on a wall has been described as an example. However, the building sheet of the present invention is not limited to a wall, for example, it is constructed on a roof, a floor, a boundary wall, or the like as long as it is constructed in the same manner. It may be a thing.

  Here, a modified example of the building sheet described above will be described.

  FIG. 11 is a cross-sectional view showing a modification of the building sheet of the present embodiment.

  As shown in FIG. 7B, the construction sheet described above has a configuration in which an auxiliary sheet 13 is bonded to a main body sheet 11 having a ventilation region 12. Although the main body sheet 11 having the ventilation region 12 is stretched between the columns, the building sheet of the present invention may be a sheet having the ventilation region that is not stretched between the columns. Good. For example, as shown in FIG. 11 (a), a ventilation sheet 23 having a ventilation region 22 is provided at the bonding portion 24 on the moisture-proof and airtight sheet 21 stretched between the columns and on the side filled with the heat insulating material. The building sheet 2 having a bonded structure may be used. As for this moisture-proof airtight sheet | seat 21, the part which covers the ventilation sheet 23 is equivalent to an example of the cover part of this invention, and parts other than this cover part are equivalent to the 1st area | region of this invention. That is, the moisture-proof and air-tight sheet 21 corresponds to an example of the first sheet body of the present invention. The ventilation region 22 corresponds to an example of a second region of the present invention, and the ventilation sheet 23 corresponds to an example of a second sheet body. Here, the ventilation sheet 23 may be composed of a plurality of sheet-like members. For example, as shown in FIG. 11B, a net-like sheet forming the ventilation region 22 and a moisture-proof and air-tight sheet 231 are provided. It may be bonded. According to the building sheet 2 shown in FIG. 11, even when the ventilation sheet 23 is peeled off from the moisture-proof and air-tight sheet 21 due to factors such as deterioration of the adhesive after construction, the filled heat insulating material can be held.

  Furthermore, the example where the structure of the construction sheet described above is continued will be described.

  FIG. 12 is a cross-sectional view showing a modified example of the building sheet, which is different from FIG. 11.

  The building sheet described so far was stretched in the space between the pillars and the pillars (or the studs). It is good also as a sheet | seat for construction which can be stretched over several space which continues through. For example, by applying the building sheet shown in FIG. 7 (b), as shown in FIG. 12 (a), one main body sheet in which a ventilation region 12 is provided for each space across a plurality of spaces. 11 and the auxiliary sheets 13 corresponding to the ventilation regions 12 may be provided, respectively, so that a plurality of continuous spaces can be filled with a heat insulating material via a building member such as a pillar. That is, it is only necessary that a plurality of combinations of the ventilation region 12 and the auxiliary sheet 13 are provided at intervals so that the extending direction of the combination is parallel. For example, as illustrated in FIG. 12B, the auxiliary sheet 13 of the building sheet 1 illustrated in FIG. 7B may be formed so as to be integrated with the main body sheet 11 of the adjacent building sheet 1. .

  Furthermore, it is good also as a structure that the structure of the modification of the building sheet shown in FIG. 11 continues. For example, as shown in FIG. 12 (c), the ventilation sheet 23 having the ventilation region 22 of the building sheet 2 shown in FIG. 11 is formed so as to be integrated with the moisture-proof and airtight sheet 21 of the adjacent building sheet 2. May be.

  In the above description, in a space between the outer wall and the inner wall of a building where a plurality of pillars are erected at intervals, a predetermined partition (such as a moisture permeable waterproof sheet BS) provided on the outer wall side. An architectural sheet that delimits a blow space (space SP) into which the heat insulating material is blown, and fixes the fixed portions (portions fixed by the needles ST) fixed to the plurality of columns, and connects the columns and the columns. And a plurality of vent holes (holes 121) through which the partition portion escapes gas from the blow space to the indoor side when the heat insulating material is blown into the partition portion (portion stretched between the pillars PI). 11 having a provided ventilation area (a ventilation area 22 shown in FIG. 11), and further covering a ventilation area and closing the plurality of ventilation holes (a ventilation sheet among the moisture-proof and airtight sheets 21 shown in FIG. 11). The building sheet having a portion covering 23) is described It has been.

  Further, at least the non-ventilated region (the portion of the moisture-proof and airtight sheet 21 shown in FIG. 11 that does not cover the vent sheet 23) of the fixed portion, the cover portion, and the partition portion is the vent region. An architectural sheet integrally formed of an airtight material having a higher airtightness is also described.

  Further, the cover part is described in which the other end is freely contactable and separable with respect to the fixed part. That is, the cover part is one in which one end of the cover part is bonded to the non-ventilated region, and extends from the one end to the position where the other end overlaps the fixed part. In the covered state, the other end overlaps the fixed part (see, for example, FIGS. 7 and 11), and in the state that does not cover the ventilation region, the other end is separated from the fixed part (see FIG. 8). Has been.

DESCRIPTION OF SYMBOLS 1 Architectural sheet 11 Main body sheet | seat 12 Ventilation area | region 13 Auxiliary sheet | seat 14 Adhesive part 121 Hole 2 Architectural sheet | seat 21 Moisture-proof airtight sheet | seat 22 Ventilation area | region 23 Ventilation sheet | seat 24 Adhesive part

Claims (11)

In the building sheet that holds the heat insulating material that is stretched between the plurality of columns that support the wall when forming the indoor wall and blown into the space between the plurality of columns,
A holding portion made of one or a plurality of sheets provided with a first region that does not allow water vapor to pass therethrough and a second region that is less airtight than the first region;
A cover portion that can be superimposed on the second region;
The building sheet according to claim 1, wherein the cover portion is overlapped with the second region to enhance airtightness of the second region.   The building sheet according to claim 1, wherein the second region is formed with a hole.   The architectural sheet according to claim 1, wherein the second region is formed of a net. The first region is a region formed by one or more airtight sheets,
The architectural sheet according to claim 2, wherein the second region is a region in which a hole is formed in an airtight sheet that forms the first region.   The architectural area according to claim 2, wherein the second area has a total area of holes formed of 2.5% or more and 6.0% or less with respect to an area holding the heat insulating material. Sheet.   The building sheet according to any one of claims 1 to 5, further comprising a first sheet body that forms a part of the first region and the cover portion on an indoor side.   It has the 2nd sheet body which consists of one or a plurality of sheet-like members which form the part other than the field contained in the 1st sheet among the 1st field, and the 2nd field located in the space side. The architectural sheet according to claim 6, wherein   The building sheet according to claim 7, wherein the first sheet body and the second sheet body are bonded to each other. The second region is a band-like region extending in one direction,
The architectural sheet according to any one of claims 1 to 8, wherein the covering portion is a belt-shaped member disposed along the second region.   The building sheet according to claim 9, wherein a plurality of combinations of the second region and the covering portion covering the second region are provided at intervals such that the extending directions of the combinations are parallel to each other. . A method of encapsulating a heat insulating material in a space between a plurality of pillars supporting the wall when forming an indoor wall using the building sheet according to any one of claims 1 to 10. And
A stretching step of stretching the building sheet between the pillars;
A filling step for filling the space with the heat insulating material;
And a sealing step of superimposing the covering portion on the second region.