JPH04108707U - Composite water-stop joint material - Google Patents

Abstract

(57) [Summary] [Purpose] This relates to a joint material that is embedded in gaps as a backup material during waterproofing work in gaps between building materials. This joint member is provided with a waterproof function using super absorbent fibers. [Structure] Highly absorbent fibers are electrostatically flocked onto the surface of an elastic string-like core material 1, and the surface of the core material 1 is covered with a fiber layer 2.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to composite water-stop joint members used for curtain wall joints, etc. , especially from long string-like members used as backup material embedded in seams. The present invention relates to a composite water-stop joint member.

0002

[Conventional technology]

Foamed plastics are used to waterproof and fill in joints such as curtain walls. Back-up material is a string-like member made of elastic material such as or rubber, and silicone-based Alternatively, it is common to use an amorphous sealant such as acrylic (for example, (Refer to Utility Model Publication No. 59-36568). As is well known, try to seal Fill the gaps between the building materials with backup material made of long string-like members, and fill in the remaining gaps. Apply an amorphous sealant in between to completely fill the gap.

0003

[Problem that the idea aims to solve]

In the general waterproofing work mentioned above, the reliability of waterproofing is variable due to the amount of time it takes to fill the gaps between building materials. It depends solely on the adhesion of the shaped sealant, and the string-shaped elastic member is used as a backup. It is used as a plastic material and has almost no waterproof function. Therefore, the amorphous sealin The construction work that allows the filling of the material into the gap may not be carried out properly, or the material may become buried due to deterioration of the material. If the embedded sealant peels or breaks, it will not be completely waterproof and water may leak. vinegar. Used in various parts as an irregularly shaped sealing material with good adhesion and adhesion and high waterproof performance. Recently, super absorbent resins and super absorbent fibers have been used as sealants. Techniques for use have also been developed. Improves waterproof performance by utilizing the water absorption properties of super absorbent resin. I'm trying to meet you.

0004 However, in order to perform waterproofing work using super absorbent resin as an amorphous sealant, the following steps are required. There is a problem. For example, if construction is carried out in a high humidity environment, high absorbency will occur when the humidity decreases. Water-based resin releases moisture and shrinks, causing peeling and cracking. Conversely, a low humidity environment If the sealant is installed underneath, when the humidity increases, the sealant will absorb moisture and expand, causing joint damage. It protrudes from the eye area.

[0005] This idea was made in view of the above points, and its purpose is generally to A string-like elastic member used as a backup material has a waterproof function made of highly absorbent fibers. The object of the present invention is to provide a composite water-stop joint member with added features.

[0006]

[Means to solve the problem]

The composite water-stop joint material developed by this invention is made of foamed plastic or elastic material such as rubber. A fiber layer is formed by electrostatically flocking highly absorbent fibers onto the surface of a string-like core material made of synthetic material. This is what I did.

[0007]

[Effect]

A string-like core material made of elastic material is coated with a fiber layer of highly absorbent fibers, making it highly absorbent. Water-based fibers themselves have poor elasticity, but as a whole they act as string-like joint members with high elasticity. Become. Therefore, as with conventional joint members (string-like elastic members), it can be used as a backing for waterproofing work. Can be used as up material. Super absorbent fibers are several hundred times larger than their own volume. It can absorb a thousand times more water. The absorbed water is gradually released as the outside dries. However, water is not released when pressure is applied to the fibers. have this kind of property Fill in gaps between building materials as a backup material with joint materials covered with super absorbent fibers. If it is mixed in, it can lead to poor installation or material deterioration of the irregularly shaped sealant that can be applied over it. Therefore, even if water enters the gap, the superabsorbent fibers will absorb a large amount of water. Therefore, there will be no water leakage. Super absorbent fibers swell when they absorb water, but when pressure is applied Highly absorbent water with expanded gaps between building materials as the absorbed water is not released even if the material is broken. The elastic fibers form a tight seal and exhibit an extremely high waterproofing effect.

[0008] In addition, a fiber layer is formed by electrostatically flocking highly absorbent fibers onto the surface of the string-like core material. Compared to simply wrapping superabsorbent fibers around a core material, it is much more durable. For complex shapes such as crossed joint members at the corners of curtain walls. The core material is also very easy to manufacture, making this composite water-stop joint material inexpensive. Can be mass produced.

[0009]

【Example】

FIG. 1 shows the cross-sectional shape of a composite water-stop joint member according to an embodiment of the present invention. 1 2 is a string-like core material made of elastic material such as foamed plastic or rubber, and 2 is a string A highly water-absorbent fiber layer formed by electrostatic flocking on the circumferential surface of the shaped core material 1, 3 is a highly water-absorbent fiber layer. This is an adhesive layer applied to the surface of the string-like core material 1 when electrostatically flocking fibers. Electrostatic flocking is well known, and involves applying an adhesive layer 3 to the surface of a string-like core material 1. A high voltage is applied between the string-like core material 1 and an electrode (not shown) to form a super absorbent fiber. The short fibers are blown toward the adhesive layer 3 of the string-like core material 1 by electrostatic action. Do it like this The surface of the string-like core material 1 is covered with a highly water-absorbent fiber layer 2 in which short fibers are flocked at an appropriate density. Form a coating.

0010 The composite water-stop joint member of this invention can be used in waterproofing work in the same way as conventional string-like elastic members. Can be used as a backup material. In the example shown in the figure, the string-like core material 1 Although the cross-sectional shape of the core material is circular, the present invention is not limited to this. The shape can be of various cross-sectional shapes depending on the purpose of use.

[0011]

[Effect of the idea]

The composite waterproof joint member of this invention is electrostatically flocked on the surface of a string-like core material made of an elastic material. A highly absorbent fiber layer is coated with a string-like part that is highly elastic as a whole. It is a material that can be packed into gaps between building materials as a back-up material, similar to traditional joint materials. It can be used in Apply irregular shaped sealant over it as before. The common usage is to Therefore, when using this composite water-stop joint material, The waterproofing work is the same as before, but a back-up material is embedded in the gap. Since it absorbs and retains a large amount of water that has entered the interior of the The composite water-stop joint of this invention can be used as a backup material even if the waterproofing material cannot be completely waterproofed. Combined with other components, it is possible to obtain higher waterproof performance than before.

[Brief explanation of drawings]

[Fig. 1] Cross-sectional view of a composite water-stop joint member according to an embodiment of this invention

[Explanation of symbols]

1 String core material 2 Super absorbent fiber layer 3 Adhesive layer

──────────────────────────────────────────────── ─── Continued from the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI Technical display location C09K 3/10 Z 9159-4H E04B 1/684 (72) Inventor Hiroshi Bushimata Minami, Itabashi-ku, Tokyo 1-9-1 Tokiwadai, Nogi Flotsu Kogyo Co., Ltd. (72) Designer: Miki Aoyama 4-640 Shimokiyoto, Kiyose-shi, Tokyo Inside Obayashi Technology Research Institute Co., Ltd. (72) Designer: Yoshimasa Hayashi 4, Shimokiyoto, Kiyose-shi, Tokyo 640-chome Obayashi Technology Research Institute Co., Ltd. (72) Creator Haruka Ogawa 4-640 Shimokiyoto, Kiyose-shi, Tokyo Inside Obayashi Technology Research Institute Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A composite water-stop joint member formed by electrostatically flocking highly water-absorbent fibers onto the surface of a string-like core material made of an elastic material such as foamed plastic or rubber to form a fiber layer covering the surface.