JPS6133942B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides decorative laminates,
This paper relates to a method for treating gaps, so-called joints, when panel materials such as base boards are installed.

Conventionally, a known method for treating this type of joint is to use a joint material made of open-cell foam impregnated with asphalt, etc., and press it into the joint gap of the panel material. in this way,
It requires compression and insertion, which is time-consuming, and it also has the disadvantage that it is difficult to adhere to concrete surfaces.Additionally, asphalt oozes out because the joint material is compressed and inserted in order to achieve airtightness. There is also a drawback.

It is also known to use paste materials such as thiocol, butyl rubber, and silicone as joint materials, but in this case, the material deteriorates over time and has the disadvantage of causing cracks.

Furthermore, as another joint treatment method, a hard urethane foamable resin stock solution is injected or applied with a brush into the joint gaps of a panel material, and the resin is foamed and cured. However, when carrying out an injection treatment method using a two-component mixture of polyol and diicyanate, which is cheaper than a one-component resin solution, as the resin stock solution, a cylinder and injection equipment are required to store the stock solution. Moreover, the high pressure inside the cylinder makes it difficult to work with, and once the cylinder is opened, it must be used up, and a special valve is required to eliminate this problem. Particularly in the case of vertical joints, after the resin stock solution is injected into the joint gap, the resin stock solution sag for several minutes until it foams and hardens, resulting in an insufficient amount of foam filling or a difference in filling density between the top and bottom of the joint. Also, when applying the resin stock solution with a brush,
It does not fit well into the joint gaps, resulting in poor workability and increased loss, and the resin stock solution also sags.
In addition, since the length, width, depth, etc. of the joint gap vary depending on the location, the resin stock solution must be filled accordingly.

The present invention was invented to eliminate the drawbacks of the conventional joint treatment methods described above, and in particular, uses a hard urethane foamable resin stock solution that is a mixture of two components of polyol and diisocyanate, and foams this in the joint gap. In the case of filling, by impregnating a string-like material made of a stretchable material with the resin stock solution and inserting it into the joint gap, the disadvantages of injection or coating methods, especially when using the resin stock solution, can be avoided. The purpose is to prevent sagging and to easily and efficiently perform joint treatment according to the width, depth, etc. of the joint gap.

Next, embodiments of the present invention will be described with reference to the drawings.

A hard urethane foamable resin stock solution consisting of a two-component mixture of polyol and diisocyanate, a catalyst, a blowing agent, and other additives is used, and the resin stock solution is made into a porous, flexible, and stretchable material. The resin stock solution may be impregnated and retained in the string-like material 1 by, for example, dipping the string-like material 1 made of the resin, and the resin stock solution may be charged into the joint gap 3 of the panel materials 2, 2 stretched on a wall surface or the like. In particular, during this charging, the stretchable string-like material 1 is appropriately adjusted to fit the joint gap according to the width, depth, length, etc. of the joint gap 3. As a polyol that is a component of the resin stock solution of the above two-part mixture,
If ethylenediamine or diethylenetriamine is used, the reaction time will be longer than usual, which is convenient for construction work. This resin stock solution normally completes foaming and curing within 6 to 10 minutes after mixing, so the required amount of resin stock solution is mixed each time at the construction site. A series of operations for charging the string-like material into the gap is completed within the time until foaming of the resin stock solution is completed. If the string-like material 1 impregnated with the resin stock solution is inserted into the joint gap 3 within a predetermined time,
A while after charging, the resin stock solution is foamed and cured, and the joint gap 3 is filled with the hard polyurethane foam 4 integrated with the string-like material. When the temperature is low, after the string-like material has been charged, it may be heated with a dryer or the like to promote foaming and curing. In addition, if there is a risk that the rigid polyurethane foam will expand excessively from the joint gap to the surface side due to excessive foaming, a plate with mold releasability, such as a polyethylene board, should be placed on the surface side of the joint gap after the string-like material is inserted. It is recommended to apply a plate material coated with silicone oil to suppress foaming.

In addition, the string-like object 1 made of a stretchable material used in carrying out the present invention is an open-cell mainly soft synthetic resin foam, such as soft polyurethane foam, polyvinyl chloride, rubber foam, etc. Any material may be used as long as it is made of a porous and stretchable material capable of impregnating and retaining the resin stock solution, such as a long piece of paper or a string made of stretchable fibers.

A construction test example using the joint gap method of the present invention as described above will be shown below.

[] When we used a 5 x 5 mm square soft polyurethane foam as a string and carried out treatment construction at vertical joints with a joint gap of 10 mm, the amount of resin stock solution used was 20 to 40 g/m, and airtightness after construction was achieved. The condition was good.

[] When processing was carried out at vertical joints with a joint gap of 5 mm using twine strings with a diameter of 3 mm as the string-like material, the amount of resin stock solution used was 10 to 20 g/m
The airtightness after construction was good.

As a comparative example, if a string-like material is not used, it is possible to construct horizontal joints, but with vertical joints,
Construction was impossible due to sagging.

As described above, according to the method of the present invention, a string-like material made of a stretchable material is impregnated with a hard urethane-based foamable resin stock solution, and the string-like material is inserted into the joint gap to be foamed and hardened. Therefore, even if there are vertical joints or other joints in the vertical direction, the resin stock solution is impregnated and held in the string-like material and does not drip down before foaming and curing is completed. In other words, there is no lack of airtightness or difference in filling density between the upper and lower parts of the joint, and it is possible to easily perform joint treatment with uniform filling density and good airtightness over the entire joint. In particular, since the string-like material is made of a stretchable material, it can be stretched even when impregnated with resin stock solution, and its length and thickness can be adjusted by adjusting the stretch. Depending on the width, depth, length, etc., it is possible to adjust the expansion and contraction to match the thickness and length for each joint, and in turn, the amount of foam filled with the resin stock solution can be adjusted to fit the gap between each joint. This allows for more uniform and better joint treatment. Further, a slight dimensional difference between the string-like material and the joint gap can be absorbed by the expansion/contraction adjustment described above.
It can be carried out using a two-component mixture method, which is cheaper than a one-component urethane foam resin stock solution, and since the stock solution is impregnated into a shaped string-like object, it is easy to handle and can be applied to joint gaps. The charging operation is easy, and there is no need for special cylinders or injection equipment as in the case of the injection method, and there is less processing loss as in the case of the brush application method.

Therefore, the present invention is a great invention that contributes to improving the workability and promoting cost reduction of joint treatment using a hard urethane foamable resin stock solution.

[Brief explanation of the drawing]

FIG. 1 is a partial perspective view showing an embodiment of the present invention during construction, and FIG. 2 is a partial perspective view showing a completed construction state. 1... String material impregnated with hard urethane foamable resin stock solution, 2, 2... Panel material, 3... Joint gap, 4...
Polyurethane foam.

Claims (1)

[Claims] 1. A string-like material made of a stretchable material is impregnated with a hard urethane-based foamable resin stock solution, and the resin solution is foamed and hardened while being inserted into the joint gap. Joint treatment method. 2. The joint treatment method according to claim 1, wherein the string-like material is made of a synthetic resin foam having open cells.