JPH0626125A - Foamed plastic heat-insulating building material - Google Patents

Abstract

PURPOSE:To shorten the execution time by forming the coated layer of pressure- sensitive adhesives on at least one surface of a tabular body composed of foamed plastics while covering the surface with a filmy body having releasability. CONSTITUTION:The coated layer 2 of pressure-sensitive adhesives is formed on one surface of a tabular body 1 consisting of foamed plastics, and the surface of the coated layer 2 of the pressure-sensitive adhesives is covered with a filmy body 3 having releasability such as released paper, thus manufacturing a laminate. Groove sections 4 for division are formed to the tabular body 1 made up of the foamed plastics as required, and the tabular body 1 is separated in desired size. Accordingly, a building material for heat insulation can be mounted and fixed easily to a surface to be executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foamed plastic heat insulating building material which is preliminarily molded as a plate in a factory, and is particularly useful for construction surfaces such as roofs, ceilings, outer walls and floors of buildings and facilities. The present invention relates to a foam plastic heat insulating building material that is attached and fixed together.

[0002]

2. Description of the Related Art Conventionally, for the purpose of energy saving, it has been widely practiced to provide a building material for heat insulation on roofs, ceilings, outer walls, floors and the like of buildings and facilities. Examples of such heat insulating building materials include inorganic fiber type heat insulating building materials such as glass wool and rock wool, foam polystyrene, extruded expanded polystyrene, rigid urethane foam, highly expanded polyethylene, expanded plastic insulating building materials such as urea foam, and insulation. There are building materials for wood fiber heat insulation such as boards (soft fiber boards). Among them, the building material for foam plastic heat insulation is a type such as hard urethane foam or urea foam that brings the undiluted solution to the site and foams it. There are types such as extruded expanded polystyrene, expanded polystyrene, and highly expanded polyethylene that are pre-molded into a plate at the factory.
Hard urethane foam is also used as a heat insulating material.

For a foamed plastic heat insulating building material of a type that is preliminarily molded into a plate at a factory, when it is attached along the work surface such as the roof, ceiling, outer wall or floor of a building or facility. , Conventionally, building materials for heat insulation that have been molded into an appropriate shape and size according to the surface to be constructed are used as solvent-based or non-solvent-based (emulsion-based) adhesives, nails,
Attaching and fixing to the work surface by using the mounting brackets individually or in combination, or after temporarily fixing to the work surface with them, splints, pierces, base materials, inner and outer walls It is attached by a material, a ground plate, etc. so that it will not fall off the construction surface.

[0004]

However, the mounting of the foamed plastic heat insulating building material of the type preliminarily molded into a plate in the above-mentioned factory has the following problems. Have
In other words, when using solvent-based or non-solvent-based (emulsion-based) adhesives, the suitability for each type of adhesive will differ depending on the type of adhesive, so care must be taken when selecting that adhesive. Also, it is necessary to apply an adhesive on site and then take an open time of several minutes (solvent type) to several tens of minutes (emulsion type) until it is attached to the surface to be constructed, so it is necessary for construction. There is a problem in safety and hygiene that it takes time, the construction efficiency is not improved, and a solvent that volatilizes from the adhesive (especially a solvent system) is sucked in, and the residual solvent may deteriorate the quality after the construction.

In the case of fixing with nails, it is not always possible to obtain sufficient mounting strength by itself, and the foamed plastic heat insulating building material is partially damaged and the heat bridge. Due to the effect, the insulation performance is deteriorated. Even when the special mounting metal fitting is used, the mounting strength is slightly increased, but the heat insulation performance is deteriorated as in the case where the nail is used.

Further, in any case, in order to increase the mounting strength, it is necessary to fix the foamed plastic heat insulating building material by using an adjunct material, a penetrating material, a base material and the like in combination.
The present invention aims to solve the problem of attaching to the construction surface of the conventional foamed plastic heat insulating building material as described above, more specifically, a foamed plastic heat insulating building material, By making it possible to attach it to the construction surface in advance, it improves the workability at the site, especially the workability for parts that require heat insulation work from below, such as the attic or under the floor. In addition to shortening the construction time by eliminating the need for adhesive application and open time after adhesive application on site, it solves the problems of safety and hygiene due to volatile solvents and the deterioration of quality due to residual solvents. It is an object of the present invention to provide a foamed plastic heat insulating building material having a sufficient fixing strength to a surface to be constructed.

[0007]

In order to solve the above-mentioned problems and to achieve the object, the present invention provides a pressure-sensitive adhesive coating layer on at least one surface of a plate-like body made of foamed plastic. The present invention provides a foamed plastic heat insulating building material, characterized in that the surface of the coating layer is covered with a peelable film-like body, and further, in such a foamed plastic heat insulating building material, there is a need. Correspondingly, the plate member made of foamed plastic is provided with a groove in advance as a cut for dividing the plate member.

[0008]

Since the foamed plastic heat insulating building material of the present invention is constructed as described above, by peeling off the film-like body covering the surface of the coating layer, the pressure-sensitive adhesive on the construction site can be removed. By exposing the coating layer and pressing the surface of the coating layer against the work surface, the foamed plastic heat insulating building material can be attached and fixed to the work surface.

Further, in the case where the plate-like body of the foamed plastic heat insulating building material is provided with a groove for division in advance,
By bending along the groove, there is a break, and the heat insulating building material can be cut into a desired size.

[0010]

EXAMPLES The present invention will now be described in more detail based on the description of examples. FIG. 1 shows an example of a film-like body 3 covering a pressure-sensitive adhesive coating layer 2 provided on the surface of a foamed plastic plate 1 in an embodiment of a foamed plastic heat insulating building material according to the present invention. This is a view showing the part peeled off. As shown in FIG. 2, this foamed plastic heat-insulating building material has a pressure-sensitive adhesive coating layer 2 formed on one surface of a foamed plastic plate 1 and coated with the pressure-sensitive adhesive. The surface of the layer 2 is covered with a releasable film-like body 3 such as a release paper or a release film to form a laminated body. A groove portion 4 for dividing is provided.

The foamed plastic heat-insulating building material will be described in more detail. First, regarding the foamed plastic plate 1 used therein, a polystyrene-based material (polymer having a styrene content of 50% or more, copolymer weight) is used. Union, mixed resin), polyvinyl chloride, polyvinylidene chloride, polyethylene, polypropylene, polyurethane,
Epoxy resin, phenol resin, urea resin, etc.
It has a heat-insulating property which is mainly foamed with closed cells up to 60 times, and the most preferable one is extruded polystyrene foam plate such as Eslen foam (trade name) and Literon board (trade name). Examples include extruded foamed polyethylene plates.

As the pressure-sensitive adhesive 2 (adhesive material) to be applied, it is preferable to select a two-component acrylic type from the viewpoint of performance such as heat resistance, weather resistance and long-term adhesive holding strength. Then, as a method of forming the foamed plastic heat insulating building material of the present invention using these materials, first, the pressure-sensitive adhesive 2 is applied to a releasable film-like body 3 such as a release paper or a release film. Then, this is pressure-bonded and laminated on the plate-like body 1 of foamed plastic, and the pressure-sensitive adhesive 2 is transferred to the plate-like body 1. Specific methods therefor include a dry laminating method and a solventless laminating method.

In the dry laminating method, the pressure-sensitive adhesive 2 is applied to the surface of the peelable film 3 by any of various conventionally known coating means, and then the solvent is evaporated in a drying tunnel. The surface of the film body 3 has a uniform thin layer of adhesive (30 μ to 300 μm) containing no solvent.
The plate-like body 1 of foamed plastic is formed in the laminating step after the formation of about 1 μm, preferably in the range of 70 μm to 150 μm).
And crimp and stack them. The pressure-bonded laminate must be aged for a certain period of time at a constant room temperature in order to solidify the adhesive, and an appropriate adhesive force can be obtained only after the aging step. The pressure-sensitive adhesive used in this method is mainly composed of an organic solvent-based acrylic (copolymer of acrylic acid and acrylate ester) such as toluene and ethyl acetate, and an isocyanate-based curing agent (other curing agent). Is also used) is preferable.

In the solventless laminating method, a hot-melt type pressure-sensitive adhesive is applied to the surface of the film-like body 3 having releasability by any of various conventionally known coating means, and then foamed plastic is used in a laminating step. The plate-shaped body 1 is pressed and laminated. The characteristic of this method is that
Since it is solvent-free, environmental pollution and quality troubles due to residual solvent do not occur, and since a drying section is not required during the process, the coating processing speed can be increased.
As the pressure-sensitive adhesive used in this method, a synthetic rubber-based solventless hot melt type pressure-sensitive adhesive is mainly used.

In any of the above-mentioned methods, as the conventionally known various coating means used therefor, the gravure roll method and the reverse roll method are generally generally used, but in addition, the direct roll method and the flexographic method. Method, kiss coat method, fonten method, transfer roll method and the like can also achieve the purpose. [Specific Example] A copolymer of acrylic acid and an acrylic ester (Diabond DA3237; trade name) as a main agent,
An adhesive liquid obtained by adding 0.5% of an isocyanate-based curing agent to this was applied to a silicone-based release paper (in a dry state) at 60 μ,
80μ and 100μ are applied by dry laminating method and dried with hot air at 80 ° C for about 1 minute.
m thick extruded polystyrene foam plate (Eslen foam S
After composite transfer to G; trade name), it was aged at room temperature for 7 days to obtain the foamed plastic heat insulating building material of the present invention.

For this specific example, since it is used outdoors as a building material for the attic heat insulation facing south, the release paper is removed, and the adhesive strength (kg / kg / The measured results for cm ² ) are as follows. Dry coating thickness of adhesive liquid 60μ 80μ 100μ Adhesion target Iron plate Plywood plate Iron plate Plywood plate Iron plate Plywood Adhesive strength immediately after adhesion 1.8 1.1 2.0 1.5 2.2 1.7 Heat resistance (70 ° C × 30 days) 2.9 1.8 3.4 2.5 3.7 2.6 Cold resistance (-30 ° C ×) 30 days) 1.9 1.1 2.2 1.6 2.3 1.9 Regarding the change with time of the adhesive strength after sticking for the adhesive solution of this specific example having a dry coating thickness of 100 μ,
This is as shown in the graph of FIG.

The pulling direction is vertical, the pulling speed is 100 mm / min, and the measuring machine is Strograph WZ manufactured by Toyo Seiki.
Used mold. The foamed plastic heat insulating building material of the present invention as described above is used in various places such as a house as shown in FIGS. FIG. 5 shows an example in which a foamed plastic heat insulating building material in which the film body 3 has been peeled off and divided into appropriate sizes according to the grooves 4 has been applied to the wall portion of the house. At the wall portion where the finishing material 5 and the outer finishing material 6 are formed so as to have the air layer 8 with the pillars 9 and the studs 10 sandwiched therebetween, the foamed plastic plate 1 is provided with the base material 7 on the back side of the inner finishing material 5. And pressure sensitive adhesive 2
It is attached and fixed by pasting.

FIG. 6 shows an example in which a similar foam plastic heat insulating building material is applied to the attic of a house, supported by a girder 14 and rafters 13, on which an asphalt roofing 11 and a roof finishing material 15 are provided. On the laminated base plates 12, from below, the foam plastic plate 1
By attaching the pressure sensitive adhesive 2 with
FIG. 7 shows an example of the construction which is fixed to the lower part of the floor of the house, and which is supported by the Daihiki 18 and joists 17, and the floor finishing material 16 is superposed thereon.
Further, the plate-like body 1 made of foamed plastic is attached and fixed by adhering the plate-like body 1 made of foamed plastic with a pressure-sensitive adhesive 2 from below.

In particular, when it is necessary to attach the foamed plastic plate 1 from below as in the attic or the lower floor shown in FIGS. 6 and 7, the foamed plastic heat insulating building material of the present invention is simply used. Since it suffices to press the surface of the pressure-sensitive adhesive 2 against the surface to be constructed, the construction becomes extremely easy as compared with the conventional one. Although the foamed plastic heat insulating building material of the present invention has been described above based on the examples, the present invention is not limited to the above examples, and, for example, as shown in FIG. The pressure-sensitive adhesive coating layer 2 and the peelable film-like body 3 may be provided not only on one surface of the foamed plastic plate-like body 1 but also on both surfaces thereof. Needless to say, it has various embodiments.

[0020]

EFFECTS OF THE INVENTION The foamed plastic heat insulating building material according to the present invention has no problem in terms of fixing strength to the surface to be constructed, and can be attached to the surface to be constructed in advance. , It is possible to shorten the construction time by eliminating the need for adhesive application on site and the open time after adhesive application, and especially for areas that require heat insulation installation from below, such as the attic or underfloor. It is possible to improve workability in the field. By using the pressure-sensitive adhesive, it is possible to solve the problem of safety and hygiene due to the inhalation of a volatilized solvent and the problem of deterioration of quality due to residual solvent.

Also, in the case where the groove portion for dividing is provided in advance in the plate-shaped body of the foamed plastic, simply bending along the groove portion does not require a tool on site,
The building material for heat insulation can be divided according to the size of the work surface.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a foamed plastic heat insulating building material according to the present invention.

FIG. 2 is a partial sectional view of the embodiment shown in FIG.

FIG. 3 is a partial cross-sectional view showing another embodiment of the foamed plastic heat insulating building material according to the present invention.

FIG. 4 is a graph showing the change with time of the adhesive strength of an example of the foamed plastic heat insulating building material according to the present invention.

FIG. 5 is a partial cross-sectional perspective view showing an example of use of a foamed plastic heat insulating building material according to the present invention.

FIG. 6 is a partial cross-sectional perspective view showing another example of use of the foamed plastic heat insulating building material according to the present invention.

FIG. 7 is a partial sectional perspective view showing still another example of use of the foamed plastic heat insulating building material according to the present invention.

[Explanation of symbols]

 1-Plate-like body made of foamed plastic 2-Pressure-sensitive adhesive 3-Peelable film body 4-Groove

Claims (2)

[Claims] 1. A pressure-sensitive adhesive coating layer is provided on at least one surface of a plate-like body made of foamed plastic, and the surface of the coating layer is covered with a peelable film-like body. A building material for foamed plastic insulation, which is characterized by being 2. The foamed plastic heat insulating building material according to claim 1, wherein the plate-shaped body made of foamed plastic is provided with a groove in advance as a cut for dividing the plate-shaped body.