JPH09217434A - Joint material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the equipment cost and shorten the production line, by providing the leg core plate and the head core plate made of metallic flat plates and covering the core part integrally formed with a rigid synthetic resin coat with an elastomer and arranging sealing blades at both sides of the head core plate. SOLUTION: Sealing blades 13 made of an elastomer 10 are integrally arranged at both sides of a joint seal 12 and auxiliary blades 15 are integrally arranged at both side faces of the middle of the joint insertion part 11. In this case, a coating 16 is applied on the upper face of the joint seal 12. The width in the protruded direction of the auxiliary blades 15 is made narrower than the width of the sealing blades 13. And further, a plurality of protrusions 17 are integrally provided at both side faces of the front end of the joint insertion part 11. The protrusions are set in the bottom of joint when they are driven in the joint to prevent the joint material 1 itself from getting afloat out of the joint because of the thermal shrinkage of the elastomer 10. In this way, it becomes unnecessary that a belt-form metallic plate is continuously bent and hence, the production line is shortened and the joint material is easily driven in the joint and also damage of the joint material 1 can be prevented when it is driven in the joint.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joint material for joint finishing, which is fitted into a joint or the like of a wall exterior material of a building.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 2, a joint material 51 of this type has a core material 53 made of a strip-shaped metal plate, which is mechanically continuously bent to have a substantially T-shaped cross section. At the same time, it is formed by coating the outer periphery thereof with a soft synthetic resin 60 having a sealing property. The joint material 51 retains the rigidity of the joint fitting portion 59 made of the soft synthetic resin 60 due to the existence of the legs 55 in the core material 53, and
The presence of the bent head 57 prevents the bending of the joint fitting portion 59 in the direction perpendicular to the leg portion 55, and at the same time,
It is intended to facilitate driving into joints and prevent damage to the head 57 of the joint material 51 at the time of driving.

However, such a conventional joint material 51 is used.
Is formed by a step of continuously covering the soft synthetic resin 60 after the step of continuously bending the strip-shaped metal plate, and is cut into a certain size. In particular, the metal plate is T-shaped. Since it cannot be bent in the state of being formed in the above, a machine for molding the core material 53 into a T shape, a device for continuously coating the core material 53 with the soft synthetic resin 60, and a molding It is necessary to serially connect the squeezed product, the sizing cutting equipment, and the like. Therefore, not only a long manufacturing line for manufacturing the joint material 51 is required, but also the core material 53 is bent. Since the molding machine is expensive, there is a problem that the manufacturing cost becomes high as a result.

[0004]

The technical problem of the present invention is that it is possible to shorten the production line by eliminating the need to continuously bend the strip-shaped metal plate, and it is possible to produce the joint with inexpensive equipment. It is to provide a joint material for finishing.

[0005]

In order to solve the above-mentioned problems, the joint material of the present invention is provided with a leg core plate of a core material made of a metal plate and on the leg core plate so as to be orthogonal to it. A head core plate, the surface of which is covered with a sealing covering material made of an elastomer such as soft synthetic resin, and the leg core plate and the head core plate of the core member are independent metal strips Formed by a flat plate, and integrally forming them with a hard synthetic resin to form a core having a substantially T-shaped cross section,
The core portion is covered with an elastomer, and seal wings made of the elastomer are formed on both sides of a head core plate of the core material.

The joint material having the above structure can maintain the rigidity of the joint fitting portion in which the leg core plate is covered with the soft synthetic resin due to the existence of the leg core plate in the core material.
The presence of the head core plate can prevent bending in the direction perpendicular to the leg core plate surface, facilitating driving into joints,
Also, it is possible to prevent the joint material from being damaged during the driving.

Furthermore, a device for continuously bending the metal plate is required by integrating the leg core plate and the head core plate with a hard synthetic resin so that it is not necessary to continuously bend the strip-shaped metal plate. Therefore, since the rolled metal plate can be directly introduced into the production line to form the joint material, the production line can be shortened and the production can be performed with inexpensive equipment.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of a joint material according to the present invention will be described in detail with reference to the drawings together with one embodiment. In this joint material 1, as shown in FIG. 1, a leg core plate 5 as a core member 3 and a head core plate 7 arranged on the leg core plate 5 orthogonally thereto are independently provided. Of the metal strip-shaped flat plate, and by covering and integrating them with a hard synthetic resin 8 such as hard vinyl chloride, a core portion 9 having a substantially T-shaped cross section is formed. A soft synthetic resin such as vinyl or an elastomer 10 such as synthetic rubber is coated with an adhesive for fixing their interfaces, whereby the joint material 1
Further, a joint fitting portion 11 which fits into the joint and functions for fixing in the joint, and a joint seal portion 12 having a joint sealing function are formed.

With the elastomer 10, the seal wing portions 13 are integrally formed on both sides of the joint seal portion 12, and the auxiliary wing portions 15 are integrally formed on both side surfaces at the center of the joint fitting portion 11. On the upper surface of the joint seal portion 12, a coating 16 made of a transparent plastic film or the like and having weather resistance and mold resistance is applied. Further, the auxiliary wing portion 15 is intended to stabilize the joint material 1 at the time of driving it into the joint and to enhance the sealing property. The auxiliary wing portion 15 is slightly narrower than the seal wing portion 13 in the protruding direction. Has been formed.

Further, a plurality of protrusions 17 are integrally provided on both side surfaces of the tip of the joint fitting portion 11,
When the joint material 1 is driven into the joints, they are clamped at the bottom of the joints by a clamping means, so that the joint material 1 itself is expanded and contracted by thermal expansion and contraction of the elastomer 10 due to temperature change and the like. It prevents it from rising.

The hard synthetic resin 8 and the elastomer 10 are not limited to vinyl chloride as described above, and any hard synthetic resin and soft synthetic resin may be used as long as they have good bondability at the interface. Elastomers such as can be used.

The joint material 1 having the above structure is the core material 3 described above.
By the existence of the leg core plate 5 in, the rigidity of the joint fitting portion 11 covered with the elastomer 10 can be maintained,
Further, the presence of the head core plate 7 of the core material 3 can prevent the joint fitting portion 11 from being bent in a direction perpendicular to the leg core plate surface, so that the joint can be easily driven, and It is possible to prevent the joint material 1 from being damaged during the driving.

Further, the equipment for molding the joint material 1 having the above-mentioned structure is roughly composed of an extruder, a die (die), a sizing device, a cooling device, a take-up machine, etc. Is usually molded by a molding procedure as described below. That is, the coil-shaped strip-shaped metal plates forming the leg core plate 5 and the head core plate 7 of the core material 3 are introduced into the extruder while being successively unwound, and the hard synthetic resin 8 and the elastomer are introduced. 10 is coated, and it is passed through a die (mold) and a sizing device to form a cross-sectional shape.

Since the joint material 1 can be molded as described above, it does not require a device for continuously bending a strip-shaped metal plate, and also the metal in a coiled state. Since the plate can be directly introduced into the production line and molded, the production line can be shortened,
Moreover, it can be manufactured with inexpensive equipment.

The construction of the joint material 1 is not limited to the above-described embodiment, and the auxiliary wing portion 15 and the plurality of ridges 17 in the core material leg core plate 5 may be provided as needed. Can be omitted as appropriate.

[0016]

As described in detail above, according to the joint material of the present invention, the production line can be shortened by eliminating the need to continuously bend the strip-shaped metal plate, and the cost is low. Can be manufactured in.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a joint material according to the present invention.

FIG. 2 is a plan sectional view of a conventional joint material.

[Explanation of symbols]

 1,51 Joint material 3,53 Core material 5,55 Leg part core plate 7,57 Head core plate 9 Core part 11,61 Joint fitting part 13 Seal wing part 15 Auxiliary wing part 17 Projection

Claims (1)

[Claims] 1. A leg core plate made of a metal plate, and a head core plate arranged on the leg core plate so as to be orthogonal thereto, and the surface of the leg core plate is made of an elastomer such as a soft synthetic resin. A joint material for joint finishing, which is covered with a sealing coating material, wherein the leg core plate and the head core plate of the core member are formed by independent metal strip-shaped flat plates, and they are hardened. The synthetic resin is integrally coated to form a core having a substantially T-shaped cross section, and the core is covered with an elastomer to form sealing wings made of the elastomer on both sides of the head core plate of the core. , Joint material characterized by the following.