JP5622800B2 - Airtight foundation packing for building and manufacturing method thereof - Google Patents

Description

  The present invention relates to an airtight foundation packing for building and a method for manufacturing the same. More specifically, it is interposed between the fabric foundation (concrete) of the building and the wooden foundation, blocking the flow of air passing up and down, left and right, and preventing moisture from the cloth foundation from reaching the wooden foundation, The present invention relates to a low-cost and inexpensive plastic airtight foundation packing for building and having a performance of blocking the entry of air from the outside into the floor, and a method for efficiently producing the foundation packing.

The upper and lower surfaces of the plastic foundation packing body are flat, but the concrete cloth foundation surface in which the anchor bolts are embedded is not flat. Reduced effect. Therefore, the urethane foam with adhesive, soft vinyl chloride, and elastomer packing are manually attached to the basic packing body. As a result, there is a drawback that the manufacturing cost is unavoidable.
Since molding of plastic base packing is generally performed by injection molding, an expensive injection mold is used, so the packing is determined by the length of the mold, and the desired length and desired length Is difficult to manufacture.

In addition, urethane foam with an adhesive is attached to the base packing as a retrofit, or a soft vinyl chloride elastomer is inserted and used as a retrofit. The problem arises that it is possible.
Patent Document 1 proposes an airtight packing for building that is used between a fabric foundation and a base for maintaining an airtight structure under a floor of a building such as a house. The packing structure consists of two packing halves divided in the longitudinal direction and a plastic film attached so as to span between the two packing halves. The ventilation flows through the packing in the vertical direction. Is cut off, and as a preferred embodiment, it is disclosed that elastic materials are attached in a protruding manner on both the front and back surfaces of the packing body.
Furthermore, the cross-sectional shape is the same in the longitudinal direction, and it can be manufactured in a state where the packing segment, the plastic film, and the elastic material are integrally attached by integral extrusion.

  However, according to the study by the present inventors, it has been found that it is extremely difficult to produce an airtight packing having a structure in which a plastic film is mounted so as to be spanned between both packing halves by integral extrusion. It was.

JP 2005-23646 A

  The present invention has been made under such circumstances, and is interposed between a fabric foundation (concrete) of a building and a wooden base, and blocks the flow of air passing vertically and horizontally, from the fabric foundation. A low-cost and inexpensive plastic airtight foundation packing for plastic construction, which has the ability to prevent moisture from reaching the wooden base and at the same time block the entry of air from the outside under the floor, and efficiently manufactures the foundation packing. It is an object to provide a method for doing this.

As a result of intensive studies to achieve the above object, the present inventors have obtained the following knowledge.
As the structure of the basic packing, it is a long plate-like body, and has a large central through hole A having a rectangular cross section along the longitudinal direction, and along both sides of the central through hole A. On each of the left and right sides, there are two or more small-sized side edge through holes B having a rectangular cross section narrower than the width of the central through hole A, and the long plate-like body of the basic packing is cut along a plane perpendicular to the longitudinal direction. The cross-sectional shape is a rectangular cross-sectional shape formed by adjoining the cross-sectional shapes of two or more small side edge through-holes B in series on both sides of the cross-sectional shape of the large central through-hole A. The through holes A are provided symmetrically with respect to the central vertical plane of the long plate-like body, and two or more small side edge through holes B are provided symmetrically on both sides of the large central through hole A. The adjacent through holes are parallel to the central vertical plane. Accordingly, a section shape formed by an elastic material is formed at the upper end of the partition wall at the boundary between the side edge through holes B adjacent to each other on the upper surface of the long plate-like body. In the longitudinal direction, it is provided symmetrically with respect to the center vertical plane, and similarly, a linear protrusion made of an elastic material at the upper end of the side edge through hole B adjacent to each other on the lower surface of the long plate-like body In the position of the lower end of the partition wall provided with an elastic material, a linear protrusion is provided symmetrically in the longitudinal direction with respect to the central vertical plane, and on the center line of the long plate-like body It has been found that a base packing having a structure having an anchor bolt hole within the width of the central through hole A can meet the above-mentioned purpose.

Furthermore, as a manufacturing method of the basic packing, a die for coextrusion molding for shaping the same shape as the cross-sectional shape obtained by cutting the long plate-like body of the basic packing at a plane perpendicular to the longitudinal direction, The synthetic resin material is filled into the first extruder and melt-kneaded to extrude the molten resin, and the elastic material is filled into the second extruder and melt-kneaded to make the molten elastic material a cross section of the coextrusion die. An anchor that penetrates the long plate-like body on the center line of the moving long plate-like body while taking the cooled molded body by co-extrusion at a position where the linear protrusion made of the elastic material is provided It has been found that a method of drilling a bolt hole with a movable drill and appropriately cutting a long plate-like body at a predetermined length interval can meet the above-mentioned purpose.
The present invention has been completed based on such findings.

That is, the present invention
(1) Inside the long plate-like body, there is a central through hole A having a rectangular cross section along the longitudinal direction, and the width of the central through hole A on each of the left and right along both sides of the central through hole A. An airtight foundation packing for a long plate-like body having two or more rectangular rectangular side edge through-holes B having a narrower width, the long plate-like body of the building airtight foundation packing for the longitudinal direction. The cross-sectional shape cut by the vertical plane is a rectangular cross-sectional shape in which the cross-sectional shapes of two or more side edge through-holes B are adjacent in series on both sides of the cross-sectional shape of the central through-hole A. The central through hole A is provided symmetrically with respect to the central vertical plane of the long plate-like body, and two or more side edge through holes B are provided symmetrically on both sides of the central through hole A. The through holes adjacent to each other are separated by a partition wall parallel to the central vertical plane. A cross-sectional shape formed by cutting is formed, and a linear protrusion made of an elastic material is elongated at the upper end of the partition wall at the boundary between adjacent side edge through holes B on the upper surface of the long plate-like body. In the same direction, a linear protrusion is formed symmetrically with respect to the central vertical plane, and similarly, a linear protrusion made of an elastic material is formed at the upper end of the boundary between the side edge through holes B adjacent to each other on the lower surface of the long plate-like body. At the position of the lower end of the provided partition wall, a linear protrusion made of an elastic material is provided symmetrically in the longitudinal direction with respect to the central vertical plane, and is centered on the center line of the long plate-like body A method for manufacturing an airtight foundation packing for building having a through hole for anchor bolts within the width of the through hole A, wherein the long plate-like body of the airtight foundation packing for building is cut in a plane perpendicular to the longitudinal direction. To the die for coextrusion molding to shape the same shape as the cross-sectional shape, The synthetic resin material is filled into the first extruder and melt-kneaded to extrude the molten resin, and the elastic material is filled into the second extruder and melt-kneaded to make the molten elastic material of the coextrusion die. By co-extrusion at a position where a linear protrusion made of an elastic material having a cross-sectional shape is provided, the long plate-like body is penetrated on the center line of the moving long plate-like body while taking the cooled molded body. A method for manufacturing an airtight foundation packing for building, characterized in that a hole for an anchor bolt is drilled by a movable drill and a long plate-like body is appropriately cut at a predetermined length interval,
(2) The manufacturing method of the airtight foundation packing for building according to the above (1), wherein the shape of the protruding line portion made of an elastic material is a circular cross-section or an acute protrusion.
(3) Inside the long plate-like body, there is a central through hole A having a rectangular cross section along the longitudinal direction, and the width of the central through hole A on each of the left and right along both sides of the central through hole A. An airtight foundation packing for a long plate-like body having two or more rectangular rectangular side edge through-holes B having a narrower width, the long plate-like body of the building airtight foundation packing for the longitudinal direction. The cross-sectional shape cut by the vertical plane is a rectangular cross-sectional shape in which the cross-sectional shapes of two or more side edge through-holes B are adjacent in series on both sides of the cross-sectional shape of the central through-hole A. The central through hole A is provided symmetrically with respect to the central vertical plane of the long plate-like body, and two or more side edge through holes B are provided symmetrically on both sides of the central through hole A. The through holes adjacent to each other are separated by a partition wall parallel to the central vertical plane. A cross-sectional shape formed by cutting is formed, and a linear protrusion made of an elastic material is elongated at the upper end of the partition wall at the boundary between adjacent side edge through holes B on the upper surface of the long plate-like body. In the same direction, a linear protrusion is formed symmetrically with respect to the central vertical plane, and similarly, a linear protrusion made of an elastic material is formed at the upper end of the boundary between the side edge through holes B adjacent to each other on the lower surface of the long plate-like body. At the position of the lower end of the provided partition wall, a linear protrusion made of an elastic material is provided symmetrically in the longitudinal direction with respect to the central vertical plane, and is centered on the center line of the long plate-like body An airtight foundation packing for building having a through hole for an anchor bolt within the width of the through hole A;
(4) The building airtight basic packing according to the above (3), which is integrally molded by coextrusion of a first extruder for extruding a synthetic resin molding material and a second extruder for extruding a melt elastic material,
(5) The airtight foundation packing for building according to the above (3) or (4), wherein the shape of the protruding line portion made of an elastic material is a circular cross-section or an acute protrusion.
(6) The building airtight foundation packing according to any one of (3) to (5) above, wherein the plate-like body body is formed using a polypropylene resin composition, and (7) an elastic material. The above-mentioned (3) to (6), wherein the line projecting portion is formed by using a thermoplastic polyolefin-based resin composition that is heat-weldable with a polypropylene-based resin constituting the main body. Airtight foundation packing for construction,
Is to provide.

  According to the present invention, when interposed between a fabric foundation (concrete) of a building and a wooden base, the flow of air passing vertically and horizontally is blocked, and moisture from the cloth foundation is prevented from reaching the wooden base. At the same time, it is possible to provide a low-cost and inexpensive plastic airtight foundation packing for building and having a performance of blocking the entry of air from the outside into the floor, and a method for efficiently producing the foundation packing.

It is a perspective view of the airtight foundation packing for construction of this invention. It is a top view or a bottom view of an airtight foundation packing for construction of the present invention. It is sectional drawing cut | disconnected by XX of FIG. It is sectional drawing which shows the use condition of the airtight foundation packing for buildings of this invention. It is a side view of an example of the airtight foundation packing manufacturing apparatus for construction of the present invention. It is the figure which looked at an example of the airtight foundation packing manufacturing apparatus for construction of the present invention from the upper part.

The manufacturing method of the airtight foundation packing for construction of the present invention (hereinafter sometimes simply referred to as “foundation packing”) will be described with reference to FIGS. 1 to 3, 5, and 6.
1 is a perspective view of the building airtight foundation packing of the present invention, FIG. 2 is a top view or a bottom view of the building airtight foundation packing of the present invention, and FIG. 3 is cut by XX in FIG. FIG. 5 is a side view of an example of the building airtight foundation packing manufacturing apparatus of the present invention. FIG. 6 is a view of an example of the building airtight foundation packing manufacturing apparatus of the present invention as viewed from above. Each code is as described in the description of the code below.

  The basic packing manufacturing method according to the present invention is a low-cost and low-cost manufacturing of an airtight basic packing 100 for buildings having the structure shown in the perspective view of FIG. 1 by integral molding using a first extruder and a second extruder. It is a method to do.

[Structure of basic packing 100]
As shown in FIG. 1, the basic packing 100 has a large central through hole A having a rectangular cross section along the longitudinal direction inside the long plate-like body, and along both sides of the central through hole A. In addition, each of the left and right has a structure of a long plate-like body having two or more rectangular side edge through-holes B having a rectangular cross section narrower than the width of the central through-hole A, and The cross-sectional shape obtained by cutting the plate-like body at a plane perpendicular to the longitudinal direction is a rectangle in which the cross-sectional shapes of two or more small side edge through-holes B are adjacent in series on both sides of the cross-sectional shape of the large central through-hole A. In the cross-sectional shape, the central through hole A is provided symmetrically with respect to the central vertical plane (YY plane in FIG. 2) of the long plate-like body, and the large central Two or more small side edge through-holes B (B ₁ , B ₂ / B ₃ , B on each side of the through-hole A ₄ ) are provided symmetrically, and the through holes adjacent to each other form a cross-sectional shape delimited by a partition wall parallel to the central vertical plane, and are formed on the upper surface of the long plate-like body. At the position of the upper end of the partition wall at the boundary between the side edge through-holes B adjacent to each other, a linear protrusion made of an elastic material is provided symmetrically with respect to the central vertical plane in the longitudinal direction. At the lower end of the partition wall provided with a linear protrusion made of an elastic material at the upper end of the boundary between the side edge through holes B adjacent to each other on the lower surface of the scale plate, the linear protrusion made of an elastic material is placed in the longitudinal direction. Are provided symmetrically with respect to the central vertical plane, and are anchor bolts within the width of the central through hole A on the center line (YY line in FIG. 2) of the long plate-like body. It has a through hole for use.
The basic packing 100 has a thickness of about 2 to 8 mm, preferably 2.5 to 6 mm, and more preferably 3 mm. When sinks occur in the top and bottom portions of the ribs X and Y serving as the walls of the through holes A and B and deviate from the standard, the expansion ratio is about 1.01 to 1.5 from the viewpoint of preventing the sink and improving the appearance, preferably A 1.04 low foam is preferred.
The width of the basic packing 100 is about 80 to 150 mm, and is usually two types of 100 mm and 120 mm.

(Line protrusion made of elastic material)
In the basic packing 100, at the predetermined positions on the upper surface and the lower surface, the linear protrusions made of an elastic material are provided symmetrically with respect to the central vertical plane (YY plane in FIG. 2) in the longitudinal direction. It has been.
The shape of the linear protrusions made of this elastic material is preferably an acute-angle protrusion or a circular cross-section, and in the case of an acute-angle protrusion, an angle of about 40 to 75 degrees, preferably 60 degrees inside. When the foundation packing 100 is interposed between the fabric foundation and the wooden base, it is preferable from the viewpoint of sealing performance.

<Material for protruding line part made of elastic material>
The material of the linear protrusion is not particularly limited as long as it is an elastomer, but a thermoplastic elastomer that is thermally weldable to the polypropylene resin constituting the main body 1 is preferable. Examples of the thermoplastic elastomer include ester-based thermoplastic elastomer (TPEE), styrene-based thermoplastic elastomer (SBC), olefin-based thermoplastic elastomer (TPO), vinyl chloride-based thermoplastic elastomer (TPVC), and urethane-based thermoplastic elastomer (TPU). ), Polyamide-based thermoplastic elastomer (TPAE), fluorine-based thermoplastic elastomer (TPE), chlorinated polyethylene (CPE), conjugated diene-based thermoplastic elastomer, and the like.
These may be used individually by 1 type, or may be used in combination of 2 or more types, but the main body portion 1 of the basic packing 100 is usually a polyolefin resin such as polypropylene or polyethylene colored black. Therefore, olefinic thermoplastic elastomer (TPO) is preferable from the viewpoint of recyclability. It is preferable to add black and other color pigments to the TPO at a ratio of 0.5 to 2.0 parts by mass with respect to 100 parts by mass.

(Anchor bolt hole)
In the basic packing 100, an anchor bolt hole 7 penetrating the upper and lower surfaces is provided within the range of the width of the central through hole A on the center line (YY line in FIG. 2) of the long plate-like body. (See FIGS. 1 and 2).
The anchor bolt hole 7 is cooled in the cooling tank 20 while the long plate-like body is being extruded from the co-extrusion die 17 of the first extruder 16 in FIG. An anchor bolt drilling device 22 is provided on the center line (YY line in FIG. 2) of the moving long plate-like body.
The shape of the hole for the anchor bolt is preferably an oval type, and the size is about 140 to 200 mm in the major axis, but is usually two types of 160 mm and 180 mm, and the width is about 24 to 34 mm, preferably 28 to 32 mm. It is. Moreover, φ of the arc portion is about 24 to 34 mm, preferably 28 to 32 mm, and the distance between the holes is about 10 to 50 mm, preferably 20 to 40 mm.

[Integrated molding by the first extruder and the second extruder]
In the manufacturing method of the airtight foundation packing 100 for building of the present invention, for coextrusion molding for shaping the same shape as the cross-sectional shape obtained by cutting the long plate-like body of the foundation packing perpendicularly to the longitudinal direction. The die 17 is filled with the synthetic resin material in the first extruder 16 and melt-kneaded to extrude the molten resin, and the elastic material is filled into the second extruder 25 and melt-kneaded to obtain the molten elastic material. The co-extrusion die 17 is integrally molded by co-extrusion at a position where a linear protrusion made of an elastic material having a cross-sectional shape is provided.
Thus, the molded body integrally molded by coextrusion and extruded from the coextrusion molding die 17 is taken up by the take-up device 21, cooled and shaped while passing through the sizing die 18, and finally the cooling bath. After being cooled at 20, the anchor bolt hole 7 penetrating the upper and lower surfaces is provided by the anchor bolt hole drilling device 22. Next, after being cut into a predetermined length by the cutting device 23, they are collected by the stacker 24.

(Synthetic resin material)
As the synthetic resin material that is filled in the first extruder 16 and melt-kneaded, it is preferable that the plate-like body portion 1 is formed by using a polypropylene resin composition. Is preferred.
This polypropylene resin composition contains a polypropylene resin, an inorganic filler, and a carbon black colorant. When sink marks are noticeable in the molded product, it is preferable to add a foaming agent.

Examples of the polypropylene resin include a propylene homopolymer, a propylene-ethylene block copolymer, a random copolymer, and a propylene-ethylene-diene compound copolymer.
Of the polypropylene resins, crystalline polypropylene resins are often used. Examples of the crystalline polypropylene resins include isotactic propylene homopolymers having crystallinity, ethylene having a low ethylene unit content, and the like. Propylene random copolymer, propylene block copolymer composed of a homo part composed of a propylene homopolymer and a copolymer part composed of an ethylene-propylene random copolymer having a relatively large content of ethylene units, and Examples thereof include crystalline propylene-ethylene-α-olefin copolymers in which each homo part or copolymer part in the propylene block copolymer is further copolymerized with an α-olefin such as butene-1.

Examples of the inorganic filler include calcium carbonate, magnesium carbonate, aluminum hydroxide, magnesium hydroxide, kaolin, silica, pearlite, calcium sulfate, barium sulfate, calcined alumina, calcium silicate, talc, mica, and the like. You may use individually and may be used in combination of 2 or more type.
Among these inorganic fillers, calcium carbonate, talc, aluminum hydroxide, and magnesium hydroxide are preferable from the viewpoint of machinability and economy. Particularly, from the viewpoint of improving compressive strength and economy, fillers containing calcium carbonate are preferable. Is preferred. The calcium carbonate is not particularly limited, and any of precipitated calcium carbonate, heavy calcium carbonate, light calcium carbonate and the like can be used. The average particle size of the calcium carbonate is usually in the range of 0.05 to 200 μm, preferably 45 to 75 μm.

The content ratio of the polypropylene resin and the inorganic filler in the polypropylene resin composition is generally about 60:40 to 90:10, preferably 70:30, in mass ratio.
Examples of the blowing agent include organic blowing agents such as azodicarbonamide (ADCA), azobisisobutyronitrile (AIBN), dinitropentamethylenetetramine (DPT), p-toluenesulfonyl hydrazide (TSH); Examples include inorganic foaming agents such as sodium, ammonium carbonate, and ammonium bicarbonate.
These may be used individually by 1 type, and may be used in combination of 2 or more, and the usage-amount is a value which the foaming magnification of the basic packing 100 obtained becomes the range shown above. It is. The polypropylene resin composition can contain a carbon black colorant, and the content thereof is about 0.5 to 3.0 parts by mass, preferably 1.0 with respect to 100 parts by mass of the polypropylene resin. It is -2.0 mass parts, More preferably, it is 1.5 mass parts.

The airtight foundation packing of the present invention thus manufactured is interposed between the fabric foundation (concrete) of the building and the wooden base, blocks the flow of air passing up and down, left and right, and from the fabric foundation. This prevents moisture from reaching the wooden base and at the same time blocks the entry of air from outside into the floor.
FIG. 4 is a cross-sectional view showing a state of use of the foundation packing. Reference numerals 2a, 2b, 3a, and 3b are linear protrusions made of an elastic material, 8 is a base (woody material, square material), and 9 is a cloth foundation (reinforced concrete). ) 10 is an anchor bolt, 10 'is a space, 11 is a nut, and 12 is a washer.

EXAMPLES Next, although an Example demonstrates this invention further in detail, this invention is not limited at all by this example.
In the embodiment, as the airtight foundation packing for building, the configuration shown in FIG. 1 which is a perspective view, FIG. 2 which is a top view or bottom view, and FIG. 3 which is a cross-sectional view cut along XX in FIG. These packings are manufactured using the manufacturing apparatus shown in FIGS.
5 is a side view of an example of the basic packing manufacturing apparatus, and FIG. 6 is a view of the basic packing manufacturing apparatus as viewed from above.

  5 and 6, reference numeral 13 is a power box, 14 is an operation panel, 15 is a raw material charging hopper, 16 is a first extruder (90φ, 32D), 17 is a co-extrusion die, 18 is a sizing die, 19 Is a sizing die operation panel, 20 is a cooling tank, 21 is a take-up device, 22 is an anchor bolt drilling device, 23 is a cutting device, 24 is a stacker (stacking device), and 25 is a second extruder (30φ, 30D). , 26 is a raw material charging hopper.

  In addition, in the manufacturing method of the said basic packing in an Example, while having the hopper 15 which throws in the polypropylene resin composition which comprises the basic packing main-body part 1 as the 1st extruder 16, it is a long board of the said basic packing. A 90 mm single screw extruder is used, which is equipped with a coextrusion die 17 for shaping the same shape as the cross-sectional shape obtained by cutting the shaped body perpendicularly to the longitudinal direction. The shape of the die for coextrusion molding and the size of each part are as shown in FIG.

In this embodiment, the polypropylene resin composition is filled into the first extruder 16 by the raw material charging hopper 15, melted and kneaded to extrude the molten resin, and the elastic material is secondly fed from the raw material charging hopper 26. The extruder 25 (30 mm uniaxial) is filled, melted and kneaded, and the molten elastic material is coextruded at a position where a linear protrusion made of an elastic material having a cross-sectional shape of the coextrusion molding die 17 is provided. Perform molding.
As described above, the molded body integrally molded by coextrusion and extruded from the coextrusion molding die 17 is taken up at a speed of 2 m / min by the take-up device 21 and is cooled in the cooling tank 20 through the sizing die 18. After that, the anchor bolt hole drilling device 22 provides a small-sized anchor bolt hole 7 (long diameter 160 mm, width 30 mm, arc portion φ30 mm, distance between holes 40 mm) penetrating the upper and lower surfaces. Next, after being cut into a predetermined length by the cutting device 23, they are collected by the stacker 24.

In the said Example, the polypropylene resin composition mentioned above is used as a material which comprises the basic packing main-body part 1. FIG.
This polypropylene-based resin composition contains a polypropylene resin [manufactured by Nippon Polypro Co., Ltd., trade name “NOVATEC TW3GT”] and calcium carbonate having an average particle diameter of 60 μm in a mass ratio of 70:30. 1.5 parts by mass of a carbon black colorant is added to 100 parts by mass of the resin.

  On the other hand, in this embodiment, the elastic material constituting the linear protrusions 2a, 2b, 3a and 3b made of an elastic material in FIG. 3 contains olefin-based thermoplastic elastomer (TPO) and 100 parts by mass thereof. On the other hand, an elastomer composition containing 1 part by mass of a white coloring pigment is used. In addition, the said line | wire protrusion part is an acute angle projection-like thing which has an angle of 60 degree | times inside.

  According to the present invention, when interposed between a fabric foundation (concrete) of a building and a wooden base, the flow of air passing vertically and horizontally is blocked, and moisture from the cloth foundation is prevented from reaching the wooden base. At the same time, it is possible to provide a low-cost and inexpensive plastic airtight foundation packing for building and having a performance of blocking the entry of air from the outside into the floor, and a method for efficiently producing the foundation packing.

1 plastic foundation packing main body portion 2a, 2b, 3a, large through hole B ₁ provided in the striatum protrusion A longitudinally consisting 3b elastic _{material, B 2, B 3, B} 4 small provided in the longitudinal direction Through hole 7 Hole for anchor bolt that penetrates upper and lower surfaces 100 Airtight foundation packing for building 8 Base (wood, square)
9 Fabric foundation (steel reinforced concrete)
DESCRIPTION OF SYMBOLS 10 Anchor bolt 10 'Space part 11 Nut 12 Washer 13 Power supply box 14 Operation panel 15 Raw material charging hopper 16 1st extruder (90 (phi), 32D)
17 Die for Coextrusion Molding 18 Sizing Die 19 Sizing Die Operation Panel 20 Cooling Tank 21 Take-up Device 22 Anchor Bolt Hole Drilling Device 23 Cutting Device 24 Stacker (Stacking Device)
25 Second extruder (30φ, 30D)
26 Raw material charging hopper X ₁ , X ₂ , Y ₁ , Y ₂ rib

Claims (2)

The long plate-like body has a central through hole A having a rectangular cross section along the longitudinal direction, and a width narrower than the width of the central through hole A on both the left and right sides of the central through hole A. An airtight foundation packing for building a long plate-shaped body having side edge through holes B having two or more rectangular sections,
The cross-sectional shape obtained by cutting the long plate-like body of the building airtight foundation packing with a plane perpendicular to the longitudinal direction is the cross-sectional shape of two or more side edge through-holes B on both sides of the cross-sectional shape of the central through-hole A. Forming a rectangular cross-sectional shape adjacent to each other in series, in which the central through hole A is provided symmetrically with respect to the central vertical plane of the long plate-like body;
Two or more side edge through holes B are provided symmetrically on both sides of the central through hole A, and the adjacent through holes are separated by a partition wall parallel to the central vertical plane. A linear protrusion is formed in the longitudinal direction at the upper end of the partition wall at the boundary of the side edge through holes B adjacent to each other on the upper surface of the long plate-like body in the longitudinal direction. Provided symmetrically with respect to the plane,
Similarly, a linear protrusion made of an elastic material is provided at the lower end of a partition wall provided with a linear protrusion made of an elastic material at the upper end of the boundary between adjacent side edge through holes B on the lower surface of the long plate-like body. The building is provided with a through hole for an anchor bolt in the range of the width of the central through hole A on the center line of the long plate-like body, and is provided symmetrically with respect to the central vertical plane in the longitudinal direction. A method for manufacturing an airtight basic packing,
A synthetic resin material is used as a first extrusion machine for a die for coextrusion molding for shaping the same shape as a cross-sectional shape obtained by cutting a long plate-like body of the airtight basic packing for building in a plane perpendicular to the longitudinal direction. the molten resin extruded City and melt-kneaded by filling in,
The elastic material is filled in the second extruder and melt-kneaded, and the molten elastic material is co-extruded at a position where the linear protrusion made of the elastic material having the cross-sectional shape of the die for co-extrusion molding is provided , and then cooled. On the center line of the long plate-shaped body that is moving while taking the hole, the anchor bolt hole that penetrates the long plate-shaped body is drilled with a movable drill ,
Cutting the punched molded body at a predetermined length interval by a cutting device ,
Production of the a first extruder, the second extruder, the movable drill, architectural airtight underlying packing the cutting device is characterized that you have been incorporated into a single building airtight underlying packing manufacturing apparatus Method. The manufacturing method of the airtight foundation packing for buildings of Claim 1 whose shape of the linear protrusion part which consists of the said elastic material is a cross-sectional circular shape or acute angle | corner shape.

Images