JP2003294173A - Sealing member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sealing member which surely and easily closes a gap between a house external wall, a structural plywood board, a floor or the like and a pipe, a ducts or the like passing therethrough and fits in many kinds of pipes, ducts or the like with few types of sealing members. <P>SOLUTION: The sealing member has a tubular portion 4 and a skirt portion 6 formed on a lower edge of the tubular portion. A slit 8 is formed in the sealing member for cutting the tubular portion and the skirt portion, and at least one pleat-like projection 10 is formed on the skirt portion. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outer wall, a structural plywood, a floor, etc. applied to a highly airtight and highly heat-insulated house, and a gap between a pipe, a duct, etc. passing therethrough and the outer wall, the structural plywood, the floor, etc. The present invention relates to an airtight member used when shielding a part.

[0002]

2. Description of the Related Art Conventionally, as means for shielding gaps between pipes, ducts, etc. passing through the outer walls, structural plywood, floors, etc. of highly airtight and highly heat-insulated houses, for example,
The means of is adopted.

Means for fixing a non-foamed molded product made of an olefinic material as an airtight member, and fixing the airtight member to an outer wall, a structural plywood, a floor, etc. and pipes, ducts, etc. by using an adhesive tape at the time of use.

A means for enhancing airtightness by sticking a tape-like member having an adhesive applied to one surface of a metal foil such as an aluminum foil as an airtight tape over the gap and shielding the gap.

A tape-shaped or pleated band-shaped molded article made of an olefinic foam and having one surface coated with an adhesive is used as an airtight member, and this airtight member is attached from above the gap to shield the gap. A means to increase airtightness by doing.

[0006]

However, all of the above-mentioned means (1) to (3) have drawbacks.
That is, in the means, when the airtight member is made of an unfoamed olefinic material, the flexibility of the airtight member is inferior, and the gap becomes large due to the size difference between the penetration part and the pipe or duct passing therethrough. It was difficult to completely shield this gap, and the amount of adhesive tape used tended to increase. Further, since the airtight member is poor in flexibility, the airtight member cannot absorb the irregularities of the base, which may lead to a decrease in airtightness.

Since the tape-shaped member is inferior in flexibility as in the case of (1), when the shape of the gap becomes complicated, the tape-shaped member cannot absorb the unevenness of the base, and thus the airtightness is improved. Was sometimes reduced. Further, when the gap becomes large, it is difficult to shield the gap with only the tape-shaped member.

In the means of (1), since the size of the airtight member used for shielding differs depending on the size of the pipe or duct, an edge measure is generated in the case of a band-shaped airtight member cut to a fixed length, and the frequency of the unnecessary edge measure is generated. Was getting higher. Further, in the case of a tape-shaped airtight member having no crease, it is difficult to completely shield a gap having a complicated shape such as a corner portion.

The present invention has been made in view of the above-mentioned circumstances, and can reliably and easily shield a gap between an outer wall of a house, a structural plywood, a floor and the like, and pipes and ducts passing therethrough. An object is to provide an airtight member.

[0010]

In order to achieve the above object, the present invention provides an airtight member having a tubular portion and a skirt portion continuously provided at the lower edge of the tubular portion, wherein the tubular portion and the skirt portion are provided. One slit to cut is formed,
There is provided an airtight member characterized in that at least one pleated protrusion is provided on the skirt portion.

In the airtight member of the present invention, the inner surface of the tubular portion is fixed to pipes and ducts, and the lower surface of the skirt is fixed to the outer wall, structural plywood, floor, etc.
Shield gaps between structural plywood, floors, etc. In this case, since the airtight member of the present invention has the above-mentioned slits and fold-shaped projections, when the difference between the outer diameter of the pipe, the duct, etc. and the inner diameter of the cylinder is large, the pipe, the duct, etc., have an inner surface of the cylinder. The bottom surface of the skirt is bonded to the outer wall, structural plywood, floor, etc., and the remaining portions of the cylinder and skirt are stacked and bonded to shield the gap without impairing the airtightness. It can be done reliably and easily.

Therefore, the airtight member of the present invention can be used by stacking the tubular portion and the skirt portion by the above-mentioned method even when there are many kinds of outer diameter sizes such as pipes and ducts.
Since one size of the airtight member can accommodate various sizes of pipes, ducts, etc., it is possible to use a small number of airtight members for many types of pipes, ducts, etc.

In the airtight member of the present invention, the shape of the tubular portion,
The structure is not limited, and the tubular portion may be any one that can adhere the inner surface to a pipe, a duct, or the like, but is usually formed in a cylindrical shape, a rectangular tubular shape, or the like. Further, the shape and structure of the skirt portion are not limited, and the skirt portion may extend outward from the lower edge of the tubular portion, and the lower surface can be attached to the outer wall, the structural plywood, the floor, etc. It is formed in a circular ring shape, a rectangular ring shape, or the like.

In the airtight member of the present invention, the slit may be one that cuts the tubular portion and the skirt portion, and examples thereof include those that are continuous along the axial direction of the tubular portion and the radial direction of the skirt portion. It is not limited to.

In the airtight member of the present invention, the pleated protrusion means a protrusion formed by forming a fold (fold) on the skirt portion. This pleated protrusion is used to adjust the dimensions of the cylinder when the inner surface of the cylinder is attached to pipes, ducts, etc., and to adjust the dimensions of the skirt when the lower surface of the skirt is attached to the outer wall, structural plywood, floor, etc. Acts to facilitate. Therefore, the fold-shaped projection is a projection formed by making a crease on the skirt portion, and the structure thereof is not limited as long as it fulfills the above-mentioned function, but normally the cross section V
It is formed in a protrusion having a U shape, a U shape in cross section, or the like. Further, the number of pleated protrusions provided on the skirt portion can be appropriately set according to the size of the skirt portion and the like.

In the airtight member of the present invention, the pressure-sensitive adhesive may be applied to a part or the whole of the inner surface of the tubular portion and a part or the whole of the lower surface of the skirt, and the pressure-sensitive adhesive may be coated with a separator (release sheet). Appropriate. This makes it easy to attach the airtight member to the gap.

Further, in the airtight member of the present invention, the adhesive can be applied to a part or the whole of the upper surface of the skirt portion, and the adhesive can be coated with the separator. By doing so, as will be described later, it is possible to improve the bondability between the sheet such as the moisture-proof paper and the airtight member.

The material of the airtight member of the present invention is not necessarily limited, but it is suitable to form the tubular portion and the skirt portion with foam. In this case, since the foam has flexibility, pipes, ducts, etc. are covered with the tubular portion, outer walls,
It becomes easy to cover the structural plywood, floor, etc. with the skirt. The foam has a closed cell structure which has flexibility and high airtightness, and has a foaming ratio of 5 to 40.
Double polyolefin foam, especially polyethylene foam, can be preferably used.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION The embodiments of the present invention will be described below, but the present invention is not limited to the following examples. 1 to 6 show an embodiment of an airtight member according to the present invention. FIG. 1 is a perspective view, FIG. 2 is a front view, FIG. 3 is a rear view, FIG. 4 is a left side view, and FIG. 5 is a plan view. 6 and 6 are bottom views. The right side view appears symmetrically with the left side view.

In the airtight member 2 of the present example, 4 is a cylindrical tubular portion, 6 is a continuous ring formed on the lower edge of the tubular portion 4, and is a circular ring-shaped skirt portion that horizontally extends outward from the lower edge of the tubular portion 4. Indicates. The tubular portion 4 and the skirt portion 6 are integrally formed of a polyolefin foam having a closed cell structure and a foaming ratio of 5 to 40 times.

In the airtight member 2 of this example, one continuous slit 8 is formed in the tubular portion 4 and the skirt portion 6 along the axial direction of the tubular portion 4 and the radial direction of the skirt portion 6, and the slit 8 is formed. The tubular portion 4 and the skirt portion 6 are cut by the above. Further, the skirt portion 6 is provided with one fold-shaped protrusion 10 having a substantially V-shaped cross section.

Further, in the airtight member 2 of this example, as shown in FIG. 7, the adhesive 12 is applied to the entire inner surface of the tubular portion 4 and the entire lower surface of the skirt portion 6, and the adhesive 12 is also applied to the adhesive 12. The separator 14 is covered.

FIG. 8 is a perspective view showing another embodiment of the airtight member according to the present invention. The airtight member 22 of this example is the same as the airtight member shown in FIG. 1, except that the adhesive 24 is applied in a circular ring shape on almost the entire upper surface of the skirt portion 6 as shown in FIG. 24 to separator 2
6 is coated. Since the other structure of the airtight member of this example is the same as that of the airtight member shown in FIG. 1, the same parts as those of the airtight member shown in FIG. 1 are designated by the same reference numerals in FIG. The description is omitted.

[0024]

EXAMPLES Examples and comparative examples will be described below. With applying the <Example 1> expansion ratio 20 times (density 50 kg / m ³⁾ of one side butyl rubber of foamed polyethylene sheet having a closed cell structure adhesive, the coated material with a polyethylene separator the adhesive The tubular portion 4 and the skirt portion 6 having the shape shown in FIG. 1 were integrally molded by heating and vacuum molding. Skirt part 6 of this molding
One fold-shaped projection 10 is formed on the inner surface of the tubular portion 4 and the entire lower surface of the skirt portion 6 as shown in FIG.
The adhesive 12 and the separator 14 were laminated as shown in FIG. After that, slits 8 were formed in the tubular portion 4 and the skirt portion 6 to produce the airtight member 2 shown in FIG.

Using the airtight member 2, the indoor side penetration portion 34 and the pipe 36 of the structural plywood 32 having the structure shown in FIG.
The gap portion 38 between and was shielded. In this case, the separator 14 of the airtight member 2 was peeled off, and the lower surface of the skirt portion 6 was first pressure-bonded to the structural plywood 32, and then the inner surface of the tubular portion 4 was pressure-bonded to the pipe 36. As a result, the gap 38 was shielded and the airtightness could be improved.

When the difference between the outer diameter of the pipe 36 and the inner diameter of the pipe portion 4 is large, the inner surface of the pipe portion 4 is bonded from the end portion (near the slit forming portion) along the outer periphery of the pipe 36. The lower surface of the skirt portion 6 was attached to the structural plywood 32, and the remaining portions of the tubular portion 4 and the skirt portion 6 were attached to each other so that the gap portion 38 could be shielded with good airtightness. In this case, the fold-shaped projections 10 were used to adjust the dimensions of the tubular portion 4 and the skirt portion 6, and the overlapping was facilitated.

<Embodiment 2> When a moisture-proof paper is applied to the inside of the wooden outer wall to increase airtightness, an adhesive 24 is applied to the upper surface of the skirt portion 6 as shown in FIG. By using the airtight member 22 in which the separator 26 (the release paper in this example) is coated on the pressure-sensitive adhesive 24, the bondability between the moisture-proof paper and the airtight member 22 can be improved. In this case, since the adhesive is not applied to the outer surface of the tubular portion 4 of the airtight member 22, the workability of bonding the moisture-proof paper is improved, and it is possible to suppress the occurrence of wrinkles on the moisture-proof paper during bonding. .

<Comparative Example 1> An airtight member 46 made of unfoamed polypropylene and composed of a tubular portion 42 and a skirt portion 44 integrally provided on the lower edge of the tubular portion 42 as shown in FIG. Was molded. When this airtight member 46 is used to shield the gap between the wall surface penetrating portion and the pipe, since there is no adhesive layer on the bonding surface of the airtight member, an airtight tape having a butyl rubber adhesive layer necessary for fixing is required. The adhesive area was reduced because the adhesive area was reduced. Furthermore, since the airtight member is poor in flexibility, a small gap is likely to be formed between the airtight member and the irregularities on the surface of the substrate or the piping portion, which causes the airtightness to be lowered.

Comparative Example 2 In the airtight member of Comparative Example 1, an airtight member in which a butyl rubber adhesive layer was provided on the entire inner surface of the cylindrical portion 42 and the entire lower surface of the skirt portion 44 was produced. When this airtight member is used to shield the gap between the wall penetration part and the pipe, if there is fine unevenness on the bonding surface, it can not be absorbed, the adhesiveness deteriorates and the airtightness deteriorates. Was caused. Also, when the difference between the pipe outer diameter and the wall surface penetration portion inner diameter is large and the gap is large, the dimension cannot be adjusted because the airtight member is not flexible, and the gap portion cannot be completely shielded. .

<Comparative Example 3> A butyl rubber adhesive was applied to one surface of a foamed polyethylene sheet having a closed cell structure with a foaming ratio of 20 and molded into a tape shape with continuous folds, which was used as an airtight member. In this case, the dimensions of the airtight member had to be measured and cut for each outer diameter of the pipe. Further, depending on the outer diameter of the pipe, an appropriate size cannot be obtained, and the adhesiveness between the pipe and the wall surface and the airtight member is reduced, so that the airtightness is reduced.

[0031]

As described above, according to the airtight member of the present invention, it is possible to reliably and easily shield the gap between the outer wall of the house, the structural plywood, the floor, etc. and the pipes, ducts, etc. passing therethrough. it can. In this case, according to the present invention, by using the tubular portion and the skirt portion in an overlapping manner, it is possible to cope with many types of pipes, ducts, etc. with a small number of airtight members.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an airtight member according to the present invention.

FIG. 2 is a front view of the airtight member of FIG.

FIG. 3 is a rear view of the airtight member of FIG.

FIG. 4 is a left side view of the airtight member of FIG.

5 is a plan view of the airtight member of FIG.

FIG. 6 is a bottom view of the airtight member of FIG.

7 is a schematic cross-sectional view showing a cylinder portion and a skirt portion of the airtight member of FIG.

FIG. 8 is a perspective view showing another embodiment of the airtight member according to the present invention.

9 is a schematic cross-sectional view showing a skirt portion of the airtight member of FIG.

FIG. 10 is a schematic view of a wall penetrating portion using structural plywood.

FIG. 11 is a perspective view showing an example of an airtight member including a tubular portion and a skirt portion.

[Explanation of symbols]

2 Airtight member 4 tube 6 Skirt 8 slits 10 Folds 12 Adhesive 14 Separator 22 Airtight member 24 Adhesive 26 Separator 32 structural plywood 34 penetration 36 plumbing 38 Gap

Continued front page    (72) Inventor Tetsuji Kubota             2-6-1, Marunouchi, Chiyoda-ku, Tokyo             Kawa Electric Industry Co., Ltd.

Claims (5)

[Claims] 1. An airtight member including a tubular portion and a skirt portion continuously provided at a lower edge of the tubular portion, wherein one slit for cutting the tubular portion and the skirt portion is formed and the skirt portion is formed. An airtight member, characterized in that at least one pleated projection is provided on the. 2. The pressure-sensitive adhesive is applied to part or all of the inner surface of the tubular portion and part or all of the lower surface of the skirt, and the pressure-sensitive adhesive is coated with a separator. The airtight member according to 1. 3. The airtight member according to claim 1 or 2, wherein an adhesive is applied to a part or the entire upper surface of the skirt portion, and the adhesive is coated with a separator. 4. The airtight member according to claim 1, wherein the tubular portion and the skirt portion are made of foam. 5. A foaming ratio of 5 in which the foam has a closed cell structure.
The airtight member according to claim 4, wherein the airtight member is a polyolefin foam having an expansion ratio of about 40 times.