JPH0241616B2 - - Google Patents

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention involves applying a combination of an adhesive that exhibits adhesive strength in a short time and an adhesive that has long-lasting adhesive strength to the back surface and pressing it onto the base material. This relates to a method for fixing ceiling finishing materials, and is used when fixing ceiling finishing materials without using nails, pins, etc.

(Prior art and its problems) Contact type adhesives have traditionally been used to fix ceiling finishing materials.

This type of adhesive must be applied to the adhesive surfaces of both the base material and the finishing material, and after the surface of the adhesive has dried, the finishing material must be pressed onto the base material to adhere. Because the adhesive easily drips, the dripping adhesive may contaminate workers and the floor.

In addition, an open time (waiting time for the surface of the adhesive to dry) is required between applying the adhesive and bonding it together, and during this time it is necessary to secure a space to spread out the ceiling finishing material.
Furthermore, if the drying timing after application is delayed, there are disadvantages in that the adhesive force may be lost or the pressing time for curing may become longer.

In order to solve this problem, by using a long-lasting adhesive such as vinyl acetate emulsion or vinyl acetate acrylic in combination with a hot melt adhesive, the hot melt adhesive can create a long-lasting bond while temporarily fixing the finishing material. Japanese Patent Laid-Open No. 148218/1983 proposes to cure the adhesive and quickly perform the adhesion work of finishing materials.

However, since this method uses hot melt adhesive as an adhesive that bonds in a short time, the usable life of the adhesive is extremely short.
When the surface of the adhesive cools, it becomes less wettable to the surface to which it is adhered, resulting in poor adhesion. Therefore, it cannot be applied to large-sized finishing materials.

Furthermore, when hot melt adhesives are used for metallic C-type channels, which have recently been used, there is a risk of losing adhesive strength due to instantaneous cooling when the surfaces come into contact.

On the other hand, if the adhesive is made softer in order to extend its pot life, the creep resistance will be poor, making it unsuitable for the construction of ceiling finishing materials that are subject to constant creep, and the adhesive will not be finished until the long-lasting adhesive has hardened. There is an inconvenience that the material may peel off.

In addition, when hot melt adhesive is applied directly to the back side of the finishing material to adhere it to the base material, the finishing material cannot absorb the unevenness of the base material itself because the base material is not formed with precision. Thin and soft finishing materials create unevenness on their surfaces, while hard finishing materials create spaces between them and the base material, which prevents the hot melt adhesive from adhering to the base material.

(Technical Problem) The present invention provides a method for fixing a ceiling finishing material 1 in which an adhesive that exhibits adhesive strength in a short time and an adhesive that has a long-lasting adhesive strength are applied together on the back surface and pressed onto the base material. The object of the present invention is to extend the usable life of an adhesive that exhibits adhesive strength in a short period of time, and to enable it to follow the irregularities of the base.

(Technical means) The technical means for solving this technical problem are as follows: (a) Cyanoacrylate is applied to elastic pad pieces 2 whose outer surfaces are non-porous and which are adhered to the ceiling finishing material 1 at appropriate intervals. (b) Applying a mastic type adhesive 3 as a long-lasting adhesive between the pads 2.

In this case, if the base material is porous, the surface of the base material can be primed before applying the cyanoacrylate adhesive onto the pad.

(Effect of technical means) Cyanoacrylate adhesives are inferior in durability and impact resistance, but can be used for a short time (2 to 3 times after pressing)
It hardens in seconds) and exhibits adhesive strength.

When this cyanoacrylate adhesive is applied to the elastic pad 2, which has a non-porous surface, the adhesive is not absorbed into the pad 2, so the usable life of the adhesive can be extended. Can be glued.

Since the pad 2 is made of an elastic material, even if the surface of the base material (not shown) has irregularities, the pad 2 can absorb the irregularities.

The pad 2 is preferably made of soft rubber or plastic, a sponge with a film on its surface, a cloth with a plastic sheet laminated on its surface, a nonwoven fabric, or the like.

Mastic type adhesive 3 takes a long time to harden, but once hardened, its adhesive strength lasts for a long time. The finishing material is temporarily fixed in an extremely short time and remains in that state, and the mastic type adhesive 3 hardens over time without applying any external force, firmly fixing the finishing material to the base material. be done.

Mastic type adhesive 3 is finishing material 1
It means an adhesive that does not have fluidity when applied to the surface, and does not necessarily specify the range of solid content, and may be either organic or inorganic.

The mastic type adhesive 3 applied between the pads 2 may be applied in dotted, linear or planar form depending on the size of the finishing material 1 and the structure of the base material.

Therefore, the pot life of the adhesive, which exhibits adhesive strength in a short period of time, can be extended, and the finishing material can be fixed by following the irregularities of the base.

Primer treatment on the surface of a porous base material made of calcium silicate board, gypsum board, wood, concrete, etc. can prevent absorption of cyanoacrylate adhesive and strengthen the adhesive surface.

As this primer treatment agent, a rubber adhesive with strong adhesive properties may be used.

(Effects of the present invention) As a result of extending the pot life of the adhesive, finishing materials can be bonded with plenty of time during construction.
It can be used regardless of the size of the finishing material,
Moreover, there is the advantage that the finishing material can be left in a static state until the permanent adhesive hardens without reducing the creep resistance during temporary bonding.

Additionally, since the finishing material can be fixed by following the unevenness of the base, the finishing material can be fixed flush, resulting in a beautiful finish.

In addition, the adhesive does not run in unexpected directions, causing the site or workers to get dirty, and there is no problem in holding the finishing material in any direction after application, making ceiling material construction extremely efficient. good.

[Brief explanation of the drawing]

The drawing shows the back side of a finishing material to which an adhesive has been applied according to the method of the invention. 1... Finishing material, 2... Pad, 3... Mastic type adhesive.

Claims (1)

[Scope of Claims] 1. A method for fixing a ceiling finishing material in which an adhesive that exhibits adhesive strength in a short time and an adhesive that has long-lasting adhesive strength are applied to the back surface in combination and pressed against the base material,
A method for fixing a ceiling finishing material by applying a cyanoacrylate adhesive on pieces of elastic pads with at least non-porous outer surfaces adhered to the ceiling finishing material at appropriate intervals, and applying a mastic type adhesive between the pads. . 2. In a method of fixing ceiling finishing materials that involves applying a combination of an adhesive that exhibits adhesive strength in a short time and an adhesive that has long-lasting adhesive strength to the back surface and pressing it onto a porous base material, a primer is applied to the surface of the base material. Applying a cyanoacrylate adhesive onto pieces of elastic padding with at least a non-porous outer surface adhered to the ceiling finish at appropriate intervals; applying a mastic type adhesive between the pads; A method of fixing ceiling finishing materials, which consists of a process.