JPH0230581Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an adhesive softening device used for peeling off flooring material attached to the subfloor of a building.

In buildings, flooring materials such as cushion floors, carpets, and vinyl tiles are widely attached to the base using adhesives for purposes such as interior decoration. , epoxy resin adhesives, solvent-based adhesives made by dissolving vinyl acetate resin, chloroprene rubber, etc. in organic solvents, and adhesives such as vinyl acetate emulsion, acrylic acid ester emulsion, and synthetic rubber latex are mainly used. There is.

If some of the flooring materials mentioned above are damaged or stained, or if you want to change the look even if this is not the case, you will need to peel the flooring materials from the base and replace them. It's coming. Such peeling of the flooring material is performed manually using, for example, a spatula.

However, since the above-mentioned adhesives are intended for adhering flooring materials, etc., removing the flooring materials with a spatula requires a great deal of effort, and there is a risk of damaging the underlying material. If the flooring material is a fragile material such as a cushion floor or foam rubber carpet, the peeling will often be incomplete and a portion will remain on the base. In addition, in the case of flooring materials such as cushion floors, asbestos paper is used on the back side, so there is a risk that asbestos powder will scatter during work and adversely affect the health of workers.

In order to alleviate the above-mentioned problems, a method has also been used in which an organic solvent is applied to the flooring material remaining on the base to dissolve and remove the adhesive. However, in this case, the solvent is highly flammable, so you need to be careful with fire, and it is also toxic, so sufficient ventilation is required.There is also the risk of softening surrounding furniture, paint, etc. There are drawbacks such as the troublesome disposal of adhering residual materials.

The present invention focuses on the fact that the above-mentioned adhesive is an organic substance and softens or decomposes when heated to reduce adhesive strength, and provides an apparatus for easily peeling flooring materials. With the goal.

The present inventors have conducted research for the above-mentioned purpose and have already developed a peeling tool (spatula) that has a heating mechanism built into it (Patent Application No. 132688, 1982).

The adhesive softening device for flooring material peeling of the present invention was developed in order to more easily perform the flooring material peeling operation as described above. That is, according to the adhesive softening device for flooring material peeling of the present invention, the adhesive under the flooring material can be uniformly preheated over a relatively wide area by irradiation with far infrared rays to soften or decompose it in advance. This makes it easier to remove the flooring material.

Note that in order to heat the adhesive layer underneath through the floor covering material, it is also possible to heat the floor covering material by blowing hot air using a hair dryer or the like. However, in this case, the hot air blowing part is heated locally, making it impossible to uniformly heat a relatively wide area. A large diameter would require a large amount of power that cannot be supplied by a household power source. Moreover, in the case of heating by such hot air blowing, only the surface of the flooring material is heated, and the adhesive layer underneath cannot be effectively heated. On the other hand, in the case of the present invention, since surface heating is performed using a far-infrared heater, uniform heating is possible through the flooring material to the internal adhesive layer, and there is almost no risk of fire occurring.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The drawing is a partially cutaway front sectional view of an embodiment of the adhesive softening device for peeling flooring materials of the present invention. This heating device includes a far-infrared panel heater 3 provided inside a rectangular box 2 having an opening facing one surface of the floor covering material, and extending over almost the entire area of the opening.
This far-infrared heater 3 consists of a plate-shaped ceramic body 5 in which a resistance heating element 4 such as a nichrome wire is embedded, and the nichrome wire 4 is connected to a power cord 6 and a terminal 7 (the intermediate wiring is not shown). Far-infrared rays are emitted from the heated surface of the ceramic body 3 by applying electricity through the ceramic body 3. A thermostat 8 is inserted into the ceramic body 3 at an appropriate position. A space 9 located on the surface of the panel heater 3 of the box 2 is filled with a heat insulating material to increase thermal efficiency.

On the other hand, the box body 2 is fixed to the casters 11 via height adjustment bolts 10, and by adjusting the height adjustment bolts 10, the distance between the 1 side of the floor covering material and the 3 sides of the panel heater is adjusted. The entire structure can be moved back and forth and left and right by casters 11 parallel to one surface of the flooring material. Further, a frame 12, an energization indicator lamp 13, and an appropriate temperature indicator lamp 14 are attached to the appropriate positions of the box 2 to facilitate movement of the box and power operation. A power switch 15 is attached.

When using the above adhesive softening device, first,
The above device is placed on the flooring material 1 pasted on the base 16 via the adhesive layer 17, and the distance between the flooring material 1 and the panel heater 3 is adjusted using the height adjustment bolts 10 depending on the type of flooring material. Adjust the distance. Next, plug the power cord 6 into the power source and turn on the power switch.
When it is turned on, the energization indicator lamp 13 lights up. When the temperature of the heater 3 further increases and reaches the appropriate working temperature, the appropriate working temperature display lamp 14 lights up. When the adhesive softening device is held in this state for a certain period of time, the radiant heat from the far-infrared panel heater 3 heats and softens the adhesive layer 17 through the flooring material 1 facing it, and the flooring material 1 is heated and softened by the adhesive layer 17. It can be easily peeled off together with layer 17.

During heating operation, if the temperature of the heater 3 rises and exceeds the appropriate working temperature, the thermostat 8
is activated, the power to the heater is cut off, and at the same time the energization indicator lamp 13 goes out. At this point, when the temperature of the heater drops and falls within the appropriate operating temperature, the thermostat 6 is activated and power to the heater is restarted.

After a predetermined heating time has elapsed in a constant heating state as described above, the entire heating device is moved using the caster 11, a spatula is inserted into the softened adhesive layer 17, and the adhesive layer 17 is softened in the same manner. Peel off the flooring material 1.

As an example, approximately 300
A vinyl chloride resin floor covering layer with a thickness of 1.8 mm was applied via a synthetic rubber latex adhesive layer 17 applied at a ratio of g/m ² , and after being left for 30 days, the heating of the present invention as described above was applied. After heating using the device, the flooring material was peeled off using a spatula. The heater 3 used is a nichrome wire 4 with a rated output of 1500 W buried in a nearly uniform distribution, 7 mm thick and 400 mm long.
It consists of a rectangular ceramic plate with a width of 600 mm, and a ceramic fiber insulation material with a thickness of 33 mm is filled above the heater. Use this heater as floor covering material 1
It was held at intervals of about 15 mm on the surface. The temperature of the heater 3 was maintained at a proper operating temperature of about 300 to 320°C, and after a holding time of about 1 minute, the adhesive layer 17 reached a temperature of about 115°C, which was sufficiently easy to peel. At this point, the 40 x 60 cm flooring material facing the heater 3 could be easily peeled off in about 1 minute using a normal spatula operation.

As mentioned above, an ordinary spatula is sufficient for peeling off the flooring material after heating it with the adhesive softening device of the present invention. However, in order to shorten the heating time, shorten the cycle for flooring material peeling, and further reduce the labor required for the peeling operation, it is necessary to
As disclosed in Publication No. 59-24071),
Further effects can be obtained by using a peeling tool with a built-in heating mechanism. As described in the specification of the above-mentioned patent application, the heating mechanism has a form in which a resistance heating element such as a nichrome wire is embedded in the intermediate part between the handle of the peeling tool and the sharpened peeling plate (spatula part) extending from the handle, or Further, an opening for discharging hot air or steam is provided near the tip of the peeling plate, and a fan for discharging hot air is incorporated as necessary.

In the above example, a panel heater having a panel-shaped ceramic board was used as a preferable far-infrared heater, but instead of this, a rod-shaped or dot-shaped far infrared heater equipped with a reflector may be used on the flooring material surface. A device in which a plurality of heaters are arranged facing each other to uniformly heat a wide area can also be used, although the uniform heating effect is somewhat inferior.

As described above, according to the present invention, far infrared rays are transmitted inside a box that is movable parallel to the flooring material surface and is held at a fixed distance from the floor surface so as not to contact the floor surface. An adhesive softening device for removing flooring materials is provided that is equipped with a panel heater, and by using this device, the adhesive softening device for removing flooring materials can be softened uniformly and over a relatively wide area through the flooring material to the adhesive layer located below it in a short time. The floor covering can be heated continuously and smoothly while the device is moved. Moreover, the flooring material removal operation using the apparatus of the present invention eliminates the problems of substrate damage and environmental deterioration caused by the use of organic solvents.
Furthermore, since the far-infrared heaters are kept at a certain distance so that they do not come into contact with the floor surface, there is almost no risk of fire occurring.

[Brief explanation of the drawing]

The drawing is a partially cutaway front sectional view of an adhesive softening device for peeling flooring materials according to an embodiment of the present invention. 1... Floor covering material, 2... Box body, 3... Far infrared panel heater, 8... Thermostat, 11...
Caster, 16... Base, 17... Adhesive layer.

Claims (1)

[Scope of utility model registration request] A far-infrared heater is installed facing the floor inside a box that opens facing the floor and is movable parallel to the floor and held at a fixed distance so as not to touch the floor. An adhesive softening device for peeling flooring materials, characterized by being provided with: