JPS593345B2 - Room temperature moisture curing one-component sealant package for caulking gun - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (5) The present invention relates to a one-component sealant package for a caulking gun that is curable at room temperature and humidity and is used by being loaded into a caulking gun.

Currently, room-temperature moisture-curing one-component sealants are mainly sold in aluminum tubes, cartridges, or metal cans filled with 90 ml of sealants.

The room-temperature moisture-curing one-component sealant filled in these containers generally has a shelf life of one year or more, and does not harden during the practical inventory period from the time it is filled until the time it is used.

35 However, during construction work, the metal cans are filled with
Refilling and transferring operations such as suction into a caulking gun must be performed repeatedly, resulting in poor workability.

G.-Furthermore, there is a drawback that air is likely to be trapped when filling the caulking gun, and air bubbles are likely to enter the sealant filled into the joints.

On the other hand, for products filled in cartridges, all you have to do is load the cartridge into a caulking gun, making the installation process easy, but the cost of the container is high, and the empty container remains in the same shape even after installation, making it a waste material. Processing becomes a problem. As a solution to such waste disposal problems, it has been proposed to fill a cylindrical container made of a resin film with a sealant, and to make a filled package by ligating both ends of the container.

When this product is loaded into a caulking gun and used for sealing, the cylindrical container of the resin film is crushed into a small size, so it has the advantage of significantly reducing the amount of waste compared to cartridges. However, on the other hand, the resin film constituting the container generally does not have perfect moisture permeation prevention properties, so there is a fatal drawback that the sealant hardens during the actual storage period. To solve the above-mentioned drawbacks, using an aluminum laminate film can delay curing due to its good moisture permeability. pinholes are likely to form in the sealant, causing the sealant to harden through these pinholes.

In addition, since aluminum laminate film is hard, it is difficult to crush when extruded with a caulking gun, and even after extrusion, a large amount of sealant remains in the caulking gun as a residue, making it unsuitable as a sealant container for a caulking gun. . The purpose of the present invention is to solve the above-mentioned conventional problems, and to be lightweight and bulky.
While taking full advantage of the features of low manufacturing cost and no problem of waste after extrusion with a caulking gun,
Moreover, it is an object of the present invention to provide a room-temperature moisture-curable sealant package for a caulking gun, which allows the room-temperature moisture-curable one-component sealant in a container to be stored for a long time without deterioration.

The room temperature moisture curing sealant package for a caulking gun of the present invention which achieves the above object is provided by filling a room temperature moisture curing sealant into a cylindrical container made of a flexible resin film with a thickness of 25 to 250 microns. A filled package is formed by ligating and sealing the open end with a filament, and covering one or more of the filled packages with an aluminum laminated resin film or an aluminum vapor-deposited resin film, and removing the polymerized part of the outer film. The interior is hermetically sealed by heating or bonding with adhesive.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below along with embodiments shown in the drawings.

FIG. 1 is a side view, partially in section, of a room-temperature moisture-curing sealant package for a caulking gun according to an embodiment of the present invention, and FIG. 2 is a plan view, also partially in section. In the figure, reference numeral 1 denotes a room temperature moisture-curable sealant, and the sealant 1 is filled in a cylindrical container 2 made of a resin film having high flexibility and low moisture permeability.

In the filled state of the sealant 1, the open ends on both sides of the cylindrical container 2 are squeezed to prevent air bubbles from entering and are ligature-sealed with the filament 4 to form a rod-shaped filled package. This filled package is packaged with an aluminum laminated resin film or an aluminum vapor-deposited resin film 3 in the form of a bifold bag, and the overlapping parts 5 stacked on top and bottom of this exterior film are heat-sealed or bonded with adhesive by heating. It is adhesively bonded and the inside is hermetically sealed. In this case, the filled packaging to be internalized is
There may be one as in the embodiment shown in the figure, or there may be two or more. The resin film used for the above-mentioned cylindrical container 2 has a thickness of 25 to 250 microns and is highly flexible, has low or almost no moisture permeability, and does not degrade or alter the room temperature moisture curable sealant. or
On the contrary, any sealant that is not deteriorated or altered in quality by a room-temperature moisture-curing sealant can be used.

For example, polyethylene film, polypropylene film, polyvinylidene chloride film, vinylidene chloride monovinyl chloride copolymer film, polyvinyl chloride film,
A polyamide film, a polyester film, or a laminate film that is a combination of these films can be used. It is important that the resin film constituting the cylindrical container 2 has high flexibility. That is, this resin film is formed into a cylindrical shape, and the open end of the cylindrical shape is squeezed so as to be folded into a small size while keeping the cylindrical shape, so that no sharp edges are formed at the end. Coupled with the high flexibility of the resin film, the aluminum layer of the outer aluminum laminated resin film or aluminum vapor deposited resin film 3 is prevented from being damaged and forming pinholes. Therefore, there is no hardening of the sealant due to pinholes, and the sealant can be stored for a long period of time. In addition, the high flexibility of the resin film makes it easy for the container to deform when it is loaded into a commercially available caulking gun and extruded, which prevents some of the sealant from remaining inside the caulking gun after extrusion. can be eliminated. Furthermore, it becomes possible to crush the resin film container into a significantly smaller shape after extruding the sealant, making it possible to more effectively solve the problem of waste disposal. Furthermore, the fact that the container 2 is cylindrical means that
As mentioned above, it is effective in preventing the formation of extremely sharp edges when the open ends are ligated, thereby avoiding damage to the softness of the film as well as the aluminum layer of the exterior film 3. However, this cylindrical shape is not limited to this, and when ligating with the filament 4, even if a small amount of sealant is interposed in the ligation part in the container, the ligation can be performed while maintaining airtightness. It is possible.

Therefore, the sealant 1 can be filled airtightly into the container 2 without introducing air bubbles. If this is done by heat sealing, if Sealant 1 is present on the joint surface, the adhesion will be poor, and as a result, heat sealing will have to be carried out in the area where Sealant 1 is not present, so it will be difficult to heat seal the inside of the container. It is unavoidable that some air bubbles will be present. In addition, if the open end of the cylindrical container 2 is tied with a ligature, the end is cut into a nozzle shape during use, which facilitates the extrusion of the sealant from the caulking gun. ,
This has the effect of making sealing construction extremely easy.

The thread-like material 4 ligates the open end of the cylindrical container 2 in this way.
As the material, a wire such as a wire or a fiber thread such as a kite thread can be used. An aluminum laminated resin film is made by laminating one or a combination of two resin films on both or one side of an aluminum foil. Preferably, the aluminum foil has a thickness of 3 to 60 microns, and the resin film has a thickness of 5 to 150 microns. Resin films are flexible and have little or no moisture permeability.
Any material may be used as long as it does not deteriorate or change the quality of the one-component sealant that cures at room temperature with humidity, or vice versa.

Examples include polyethylene film, polypropylene film, polyvinyl chloride film, vinylidene chloride monovinyl chloride copolymer film, polyvinyl chloride film, polyvinyl acetate film, polyamide film, and polyester film. Aluminum vapor deposited film is
Aluminum is vapor-deposited on one or both sides of a resin film, and the same or different resin films are laminated on the vapor-deposited aluminum.

Preferably, the resin film has a thickness of 5 to 150 microns, and the vapor-deposited aluminum layer has a thickness of 20 to 100 millimicrons. The resin film is as already described for the aluminum laminated resin film.
There are no particular limitations on the manner in which a resin film container filled with a room-temperature moisture-curable one-component sealant and ligature-sealed at both ends is packaged with an aluminum laminated resin film or an aluminum vapor-deposited resin film. A single package, a single continuous package with connected seals, or 2 to 10 packages as shown in
Examples include multiple books wrapped together.

The aluminum laminated resin film and aluminum vapor-deposited resin film used for the exterior have a significantly more moisture-proofing effect than ordinary resin films, so they can significantly delay the curing of the sealant inside the cylindrical container made of flexible resin film. In addition, the cylindrical container can be easily cut with scissors or a cutter when sealing is applied, making it easy to take out the cylindrical container. When checking whether the sealant has hardened or not, it is possible to check by touch without removing the inner cylindrical container while it is in its packaged state. In general, aluminum laminated resin films and aluminum evaporated resin films are prone to pinholes in the aluminum layer due to bending.
If the inner container is configured as a double package according to the present invention as described above, the inner container does not have any hard edges, making it difficult for pinholes to occur.

Even if a pinhole is formed, the area of the pinhole is small, so the amount of moisture that passes through is small, and the moisture that passes through the pinhole does not come into direct contact with the sealant, but is diluted between the exterior and interior. Because it takes time to penetrate the film, the sealant will not harden during the shelf life. As described above, the room temperature moisture curable one-component sealant package for a caulking gun of the present invention includes a room temperature moisture curable sealant having a thickness of 25 to 250 mm.
A cylindrical container made of a flexible micron resin film is filled, the open end of the cylindrical container is squeezed and ligated and sealed with a filament to form a filled package, and one or more of the filled packages are The exterior is made of an aluminum laminated resin film or an aluminum vapor deposited resin film, and the polymerized portion of the exterior film is heated or bonded with an adhesive to seal the interior airtight, so it is lightweight, not bulky, and has low manufacturing costs. Not only does it have the advantage of making the container smaller and more compact after sealing with a caulking gun, eliminating the problem of waste, but the inner container is made of a highly flexible resin film with a thickness of 25 to 250 microns. In addition, since the inner container has a cylindrical shape and its open end is ligated and constricted so that there are no sharp edges, the end of the inner container can damage the aluminum layer of the outer resin film and cause pinholes. This allows long-term shelf life of room temperature moisture curable sealants without the formation of moisture.

Next, Examples and Comparative Examples of the present invention will be shown.

Example 1 A copolymer resin film made of 90 mol% vinylidene chloride and 10 mol% vinyl chloride with a thickness of 40 microns was used in an inner resin film container, filled with a room temperature moisture curable one-component silicone sealant, and both ends were tied with octopus thread. The ligature was then wrapped in an aluminum laminate J-C film of polyethylene (30 microns)/aluminum (7 microns)/polyethylene (15 microns)/polypropylene (20 microns), and the joint surfaces of the films were heat-sealed.

This was stored in a warehouse for one year, but the contents did not harden and there were no changes in physical properties. Comparative Example 1 When the inner resin film container of Example 1 was stored in a warehouse without an exterior packaging, curing started from the ligature in one month, and curing also started from the film surface in one to two months. .

Comparative Example 2 The sealant filled in the interior resin film container shown in Example 1 was further filled with polyethylene (30 microns) on the exterior.
/ Polyester (15 microns) / Polypropylene (2
The product was double-wrapped using a resin film (0 micron) and stored in a warehouse.

After two months the sealant began to harden.

Example 2 An interior resin film container was filled with a room temperature moisture curable one-component urethane sealant using a 60 micron polyethylene film, and the same aluminum laminate film as in Example 1 was used as the exterior for packaging, and the container was stored in a warehouse for one year. No hardening occurred.

Comparative Example 3 The film container filling material of Example 2 was stored in a warehouse without using an exterior packaging, but it began to harden in one month.

Comparative Example 4 Room temperature moisture curable one-component silicone sealant was filled into an aluminum laminated resin film container of polyester (12 microns)/aluminum (9 microns)/polyethylene (15 microns)/polypropylene (30 microns), and the filling opening was heat-sealed. The film was stored in a warehouse, but after three months, the film began to harden near the bend.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view of a sealant package according to an embodiment of the present invention, and FIG. 2 is a partially sectional plan view of the same sealant package. 1...Room temperature moisture curing one-component sealant, 2...
... Cylindrical container, 3 ... Aluminum laminated resin film or aluminum vapor deposited resin film, 4 ... Thread-like material, 5 ... Polymerization part.

Claims (1)

[Claims] 1. Room temperature moisture curable liquid sealant with a thickness of 25 to 250 mm.
A cylindrical container made of a flexible resin film of microns is filled, the open end of the cylindrical container is squeezed and ligated and sealed with a filament to form a filled package, and one or more of the filled packages are A room temperature moisture curable liquid for a caulking gun, characterized in that the exterior is made of an aluminum laminated resin film or an aluminum vapor deposited resin film, and the inside is hermetically sealed by heating or bonding the polymerized part of the exterior film with an adhesive. Sealant packaging. 2. The resin film forming the cylindrical container is a polyethylene film, a polypropylene film, a polyvinylidene chloride film, a vinylidene chloride-vinyl chloride copolymer film, a polyvinyl chloride film, a polyamide film,
The room temperature moisture curable liquid sealant package for a caulking gun according to claim 1, which is a polyester film or a laminate film made of a combination of these films. 3 Aluminum laminated resin film has a thickness of 3~
Polyethylene film, polypropylene film, polyvinylidene chloride film, vinylidene chloride-vinyl chloride copolymer film, polyvinyl chloride film, polyvinyl acetate film, polyamide film or The room temperature moisture-curable liquid sealant package for a caulking gun according to claim 1, which is a laminated film formed by laminating one layer or a combination of two or more polyester films. 4 Aluminum vapor-deposited resin film has a thickness of 5 to 150 microns and is applied to polyethylene film, polypropylene film, polyvinylidene chloride film, vinylidene chloride-vinyl chloride copolymer film, polyvinyl chloride film, polyvinyl acetate film, polyamide film, or polyester film. A room-temperature moisture-curable liquid sealant package for a caulking gun according to claim 1, which is a laminate film obtained by depositing aluminum to a thickness of 20 to 100 microns and laminating the resin film on the deposited aluminum. .