JP2000240276A - Wall paper peeling method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of peeling work by sequentially supplying hot water and vapor to wall paper in a prescribed region to be separated. SOLUTION: This wall paper peeling device is so constructed that a separating hood constituted by erecting a frame member 13 is formed in the periphery of a rectangular top plate member 12, the top plate 12 is provided with a water and vapor jet opening 14 and a vapor jet opening 15, and the respective openings are connected to a water tank and a vapor generator. Secondly on this side of the opening 15, a switching valve 17 for switching a passage to the openings 14, 15 is provided, and the opening 14 is provided with an ejector 20 to communicate a water pipeline 63 with vapor piping 19 from the valve 17. In the case of removing backing paper and an adhesive remaining on a bed in separating wall paper, the hood 11 is supported a little apart from the wall surface, the valve 17 is switched to jet water and vapor from the ejector 20, and then the hood 11 is pressed to the wall surface, the valve 17 is switched to fill the hood 11 with vapor, thereby swelling paste of backing paper to be easily separated. Thus, the wall paper can be quickly peeled off.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wallpaper peeling method capable of easily and completely removing a backing paper and an adhesive layer remaining on a base when a decorative layer on the surface is peeled off, for example, when replacing wallpaper. It relates to a wallpaper peeling device.

[0002]

2. Description of the Related Art Conventionally, when replacing wallpaper, when removing the backing paper and the adhesive layer remaining on the underlayer by removing the wallpaper on the surface, after removing the surface layer of the wallpaper, the remaining backing paper is peeled off. . There are several methods for peeling the backing paper.

(1) A method in which water is sprayed on a backing paper using a rag or a sprayer, and after a certain amount of water permeates and the adhesive softens, the backing paper is peeled off with a spatula such as a scraper. (2) A method in which pressurized steam is covered with a hood, the hood is adhered to a backing paper, the inside of the hood is filled with steam, and the adhesive is softened and peeled off. (3) After spraying water on the backing paper using a rag or a sprayer, cover the pressurized steam with a hood, adhere the hood to the backing paper, fill the inside of the hood with steam, soften the adhesive, How to peel.

[0004] As these methods, (2) rather than (1),
The efficiency (speed) of peeling is higher in (3) than in (2). However, in the method (3), it is necessary to perform two steps, that is, a step of spraying water and a step of filling with steam, and it is time-consuming to replace a dedicated jig, a machine, and the like each time. is necessary.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a wallpaper stripping method capable of performing a wallpaper stripping operation more quickly than a conventional wallpaper stripping method. It is an object of the present invention to obtain a wallpaper peeling device capable of promptly performing a wallpaper peeling operation with a step of filling with the water.

[0006]

According to a first aspect of the present invention, there is provided a wallpaper peeling method comprising the steps of: supplying hot water to wallpaper on a surface to be peeled, which is limited in advance, and supplying the hot water. The method comprises the steps of: supplying water vapor to the surface to be peeled; and removing the wallpaper of the surface to be peeled swollen by the supply of the water and the water vapor.

According to a second aspect of the present invention, in the method of stripping wallpaper, the hot water is supplied to the wallpaper on the surface to be stripped using the pressurized steam as a driving flow. This is a method carried out by hot water jetting means for heating while taking in the flow and jetting it onto the wallpaper on the surface to be peeled.

According to a third aspect of the present invention, there is provided a stripping hood which forms an enclosed space of a limited area on the wallpaper on the surface to be stripped and fills and holds the enclosed space with water vapor. And an opening in the peeling hood,
A vapor supply means for introducing pressurized steam into the surrounding space; and an opening in the peeling hood, wherein the pressurized steam supplied by the steam supply means is used as a driving flow, and water is taken into the driving flow and the peeling is performed. And hot water jetting means for jetting the wallpaper corresponding to the surrounding space of the food hood.

According to a fourth aspect of the present invention, there is provided a wallpaper stripping apparatus according to the third aspect, wherein the hot water jetting means includes an ejection opening provided in the stripping hood. A conduit through which pressurized steam flows, which is provided with a venturi portion in which a part of the conduit is reduced in diameter and which communicates with the injection opening, a water conduit having one end opened to the venturi portion, and the other end of the water conduit communicates with the water vent. And a water tank.

According to a fifth aspect of the present invention, there is provided a wallpaper stripping device according to the third aspect, wherein the pressurized steam is led out to an opening of the steam supply device or a hot water injection means is provided. It is provided with a switching means for switching the lead-out to the opening.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a step of supplying hot water to wallpaper on a surface to be peeled whose area is previously limited, a step of supplying steam to the surface to be peeled supplied with the hot water, Removing the wallpaper on the surface to be removed swollen by the supply of water and water vapor. Since hot water is supplied to the surface to be stripped, the time required for swelling is shorter than that of the conventional wallpaper stripping method, and the wallpaper stripping operation can be performed quickly.

Further, the supply of hot water to the wallpaper on the surface to be peeled is performed by using hot steam as a driving flow, warming the water while taking in the driving flow, and injecting the hot water into the wallpaper on the surface to be peeled. In the method performed, the heat source that uses water as hot water and the drive source that injects the wallpaper on the surface to be peeled can be the same, and no additional equipment such as a heating device is required.

[0013] The hot water in the present invention is a temperature at which an adhesive such as a glue for adhering the backing paper and the base can be quickly and well swelled into the backing paper remaining on the base, quickly and well. The water is raised. Normally, the temperature may be higher than the temperature of the water left at room temperature and lower than the temperature at which it does not become water vapor at atmospheric pressure. Preferably, 30 ° C. or higher, 9
Those having a temperature of 0 ° C. or less, more preferably 60 ± 10 ° C., have good penetration rates and swelling rates, and are not easily burned even if workers accidentally touch them during work, and are easy to handle.

Further, in the present invention, a peeling hood for forming an enclosed space of a limited area on the wallpaper on the surface to be peeled and filling and holding the enclosed space with water vapor; A steam supply means for introducing pressurized steam into the surrounding space; and an opening in the peeling hood, wherein the pressurized steam supplied by the steam supply means is used as a driving flow while water is taken into the driving flow. Hot water jetting means for jetting the wallpaper corresponding to the surrounding space of the peeling hood. For this reason, the wallpaper stripping operation of the step of spraying hot water and the step of filling with steam can be performed quickly.

[0015] The peeling hood of the present invention has a structure in which an appropriate distance is maintained from the surface of the wallpaper to be peeled, the peripheral portion thereof can be in close contact with the wallpaper surface, and the entire surface of the wallpaper surface to be peeled is covered. The shape and size of the peeling hood are not limited. However, in consideration of the convenience of the work of the worker, the size should be a size that can be supported by the worker with one hand, and a rectangular shape is optimal in consideration of the wallpaper removing process.

Since high-temperature pressurized steam is introduced into the inside of the peeling hood, that is, the space formed between the inside of the hood structure and the wallpaper surface, during the operation of the wallpaper peeling device, the inside of the hood structure is removed. Must be made of a material that does not deform or break even when it comes into contact with high-temperature pressurized steam, and is preferably made of lightweight aluminum.

The pressurized steam introduced into the peeling hood is supplied from a steam supply means. The water vapor supply means may be provided to be attached to the peeling hood, but the weight of the apparatus itself makes it impossible for the operator to support the apparatus with one hand. Therefore, in consideration of the convenience of the worker's work, the separation hood is installed separately from the separation hood, and is introduced into the separation hood through a supply path communicating with an opening for blowing steam of the separation hood. . As this supply path, a flexible high-pressure hose or the like that can withstand the temperature and pressure of steam is used.

The pressurized steam to be introduced is a pressurized steam that maintains a temperature equal to or higher than normal pressure and a temperature around the boiling point of water. Preferably, the pressure of the pressurized steam is 1.1 atm or more and the temperature is 100 ° C. or more. However, in order to perform a quick stripping operation, a certain high temperature and pressure are required. Therefore, preferably, 2.0 to 5.0 atm, 121 ° C to 16
0 ° C., more preferably 145 ° C. and 4.2 atm are suitable.

The hot water jetting means in the present invention uses the pressurized steam as a driving flow to jet water onto the wallpaper corresponding to the surrounding space of the peeling hood while taking water into the driving flow. That is, since the water is injected into the wallpaper in the peeling hood while being taken in the pressurized steam, the jet can be ejected with the power of the steam without requiring a special ejection drive source. Further, the jetted water becomes hot water due to the heat of the water vapor, has a high penetration speed into the wallpaper, and can perform a quick stripping operation. In addition, the sprayed water has a larger particle diameter than water of a commercially available sprayer, and has an advantage that a large amount of water can be supplied to the wallpaper.

The installation position of the opening for injecting water and steam is as follows:
If it is installed on the peeling hood, the handling of the worker becomes easy. However, since the jet flow is heated by the steam as described above and may be considerably high in temperature, the work flow is provided by penetrating the peeling hood and providing the surrounding space side in consideration of worker safety. Can prevent burns caused by the splash of the person.

Further, as a preferable example of the present invention, as the hot water injection means, an injection opening provided in a peeling hood, and a venturi portion communicating with the injection opening and having a part of a pipe reduced in diameter. A pipeline through which pressurized steam having
Since a water pipe having one end open to the venturi section and a water tank communicating with the other end of the water pipe are provided, an intense jet with hot water is supplied to the wallpaper, and the wallpaper is stripped more quickly. be able to.

That is, when the steam flows vigorously through the venturi section, the flow velocity becomes higher than that of the pipe, so that the water supplied from the water tank through the water pipe through the water pipe through the water pipe with one end opened to the venturi section. And supplied into the steam jet. The water droplets in the steam jet flow contact the surrounding water vapor to remove the heat of the water vapor and become hot water, and the water vapor whose heat has been removed condenses into the water droplets, making the water droplets large and depressurizing the surroundings. Due to this decompression effect, the steam is jetted more vigorously and a large amount of water is supplied to the wallpaper.

As a further preferred example of the present invention, there is provided a switching means for switching the discharge of the pressurized steam to the opening of the steam supply device or the discharge of the hot water injection means to the opening. Therefore, the supply of water vapor and the supply of water and water vapor to the peeling hood can be performed easily, and the wallpaper peeling operation can be performed more quickly.

That is, in the peeling operation by the operator, first, the switching means is switched, the hood for peeling is supported slightly away from the wallpaper to be peeled by the hot water spraying means, and a certain area (a large area is blown at a time) is supported. Even if it dries later,) is sprayed. Since the injected water uses the energy of steam, hot water having a higher penetration speed than water is injected. Next, the switching means is switched so that the periphery of the peeling hood is pressed against the wallpaper, and then the inside of the hood is filled with water vapor to swell the adhesive of the backing paper of the wallpaper to facilitate peeling.

The appearance of the peeling hood is provided with a high-pressure hose for supplying steam from the above-mentioned steam supply means and a water pipe for supplying water from a water tank. In addition, a handle is preferably provided so that the worker can support with one hand. Therefore, preferably, the switching means is provided at or near this handle.

[0026]

FIG. 1 is a front view showing a configuration of a wallpaper peeling apparatus according to an embodiment of the present invention. FIG. 2 is a side view of the wallpaper peeling device shown in FIG. FIG. 3 is an explanatory diagram showing the overall configuration of the wallpaper peeling device shown in FIG.

As shown in the figure, the wallpaper peeling device (10) is provided with a peeling hood (11) comprising a rectangular top plate member (12) and a frame member (13) erected on the periphery thereof. The top plate member (12) of the peeling hood (11) is provided with a water / steam jet opening (14) near the upper end and a steam jet opening (15) thereunder. .

The steam outlet opening (15) has a hollow portion of a handle (16) serving also as a part of a steam supply pipe (32) for supplying steam generated from a steam generator (31) shown in FIG. Steam is supplied through the section. Further, between the handle portion (16) and the steam outlet opening (15), a switching valve (switching means (switching means) for switching the derivation between the steam outlet opening (15) and the water / steam outlet opening (14). 17) and a switching cock (18) for rotating the switching valve (17).

FIG. 3 shows the water / steam ejection opening (14).
An ejector (20) as a hot water injection means connected to a water supply pipe (34) for supplying water stored in a water tank (33) shown in FIG. 3 and a steam pipe (19) branched from the switching valve (17). ) Provides a hot water jet.

FIG. 4 is an explanatory view showing the structure of the main part of the switching means of the wallpaper peeling device shown in FIG. FIG. 5 is an explanatory diagram for explaining the operation of the main part of the switching means shown in FIG.
As shown in the figure, the switching valve (17) that rotates in accordance with the rotation of the switching cock (18) is a so-called “three-way cock”.

As shown in FIG. 5A, when the path of the switching valve (17) communicates with the steam supply line (32) and the steam discharge opening (15), steam is led out from the discharge opening (15). And b, the steam supply pipe (32) and the steam pipe
When communicating with (19), the water vapor is led out to the ejector (20).

FIG. 6 is an explanatory view showing the structure of the main part of the water / steam supply means of the wallpaper peeling apparatus shown in FIG. As shown in the figure, the ejector (20) is provided with a pipe (62) having a venturi part (61) whose diameter is partially reduced, and the venturi part (6).
A water pipe (63) having one end open to 1). Steam is supplied to the pipeline (62) from the switching valve (17). Water is supplied to the water pipe (63) from the water tank (33) via the water supply pipe (34).

When the steam flows vigorously through the venturi section (61), the flow velocity becomes higher than that of the pipe (62), so that water is supplied from the water pipe (63) having one end opened to the venturi section (61). Water droplets are supplied into the steam jet. The water droplets in the steam jet flow contact the surrounding water vapor to remove the heat of the water vapor and become hot water, and the water vapor whose heat has been removed condenses into the water droplets, making the water droplets large and depressurizing the surroundings. Due to this decompression effect, the steam is jetted more vigorously, and a large amount of water is supplied to the wallpaper.

FIG. 7 is an explanatory diagram for explaining the operation of the wallpaper peeling device shown in FIG. As shown in the figure, when removing the backing paper and the adhesive layer remaining on the substrate by peeling off the wallpaper on the surface, the peeling work by the worker, the hood for peeling (11) is slightly separated from the wallpaper to be peeled. Support, first switch cock (1
Switch 7) to eject water and steam from the ejector (20) onto the wallpaper. At this time, even if a large area is sprayed at a time, water / water vapor is sprayed on an area equivalent to the peeling hood (11) because the area dries later. Since the water to be sprayed uses the energy of steam, hot water having a higher permeation speed than water is sprayed.

Next, when the backing paper of the wallpaper is peeled, a certain amount of moisture and temperature are required. Even if water vapor is applied immediately, peeling cannot be performed unless some water has migrated to the backing paper. Therefore, the switching cock (17) is switched so that the periphery of the peeling hood (11) is pressed against the wallpaper, and then the steam is filled in the hood (11) to swell the glue of the paper backing paper, and the peeling is performed. Make it easier. That is, if moisture is contained in the backing paper in advance, the backing paper can be easily peeled off by applying steam thereto. In particular, the effect is obvious when the backing paper is doubled or tripled.

Embodiment 2 (wallpaper peeling device 2) FIG. 8 is a front view showing a configuration of a wallpaper peeling device of another embodiment, and FIG. 9 is a side view of the wallpaper peeling device shown in FIG. As shown in the figure, the wallpaper peeling device (80) includes a peeling hood (81) composed of a rectangular top plate member (82) and a frame member (83) erected on the periphery thereof. Top plate member of peeling hood (81)
(82) has a water / steam spout opening near the upper end (84)
And a water vapor ejection opening (85) juxtaposed therewith. Water / steam outlet (84)
And the steam discharge opening (85) are arranged side by side, so that the steam pipe (89) and the like do not appear on the surface, there is no condensation of steam, and the safety of the worker is improved.

Water vapor is supplied to the water vapor ejection opening (85) through the hollow portion of the handle (86) by a water vapor supply pipe for supplying water vapor generated from a separate vapor generator. Further, between the handle portion (86) and the steam outlet opening (85), a switching valve (switching means (switching means) for switching the derivation between the steam outlet opening (85) and the water / steam outlet opening (84). 87) and a switching cock for rotating this switching valve (87)
(88).

A water supply line (9) for supplying water stored in a separate water tank (33) is provided at the water / steam discharge opening (84).
Hot water jet is supplied by an ejector (90) as hot water injection means communicating with 4) and a steam pipe (89) branched from the switching valve (87).

FIG. 10 shows A-
It is explanatory drawing which shows the structure of the principal part of the switching means of A section.
As shown in the figure, the switching cock (88) is rotated to switch the switching valve (8
Route (7) to the steam supply line (92) and the steam discharge opening
(85), steam is drawn out from the ejection opening (85), and the switching cock (88) is turned to rotate the steam supply pipe (9).
When the 2) communicates with the steam pipe (89), the steam is led out to the ejector (90). Note that the ejector (90) had the same configuration as that of FIG. 6 described above.

FIG. 11 is an explanatory view showing the structure of the spherical three-way valve shown in FIG. 10. FIG. 11A is a front view, and FIGS. As shown in the figure, the switching valve (87) that rotates in accordance with the rotation of the switching cock (88) is a spherical three-way valve. By adopting a spherical three-way valve, it is possible to achieve a configuration that does not cause steam leakage even at a high steam pressure.

Example 3 (wallpaper peeling method) A method using the wallpaper peeling device was compared with a conventional wallpaper peeling method. Conditions using a gypsum board in the base, this was prepared which was stuck a paper backing, when subjected to a peeling operation under the following conditions was measured what m ² can be peeled to 1 hour. The supply of water was performed until excess water drip from the backing paper, and the supply of water vapor was performed for a time during which the stripping operation could be performed smoothly.

(A) After supplying water to the backing paper with a sponge, the paper is peeled off with a scraper. (b) After applying pressurized steam to the backing paper, peel it off with a scraper. (c) Water (water temperature: 20 ° C.) is supplied to the backing paper in advance using a sprayer, and then pressurized steam is applied to the backing paper, followed by peeling with a scraper. (d) First, warm water (60
C) is supplied to a backing paper, and after that, pressurized steam is applied thereto, and then peeled off with a scraper.

The results of the above (a) to (d) were as follows. (a) 10.0m 2 ^/ hr (smoothly peeled from the water supply after 3-4 minutes, to dry after about 8 minutes, is required to be in the release operations to supply water.) (b) 12.6m ² / hr (smooth separation was not performed unless the steam supply time was longer than 20 seconds.) (c) 16.8 m ² / hr (steam separation was smoothly performed in a steam supply time of 10 seconds to 12 seconds.) (d) 21.0 m ² / hr (water vapor supply time was 7 to 10 seconds, and it was able to peel off smoothly.)

As described above, in the wallpaper stripping method of the present invention, when performing the step of supplying hot water and the step of supplying steam, the stripping operation is performed twice or more as much as the operation of water alone. did it. In addition, it was possible to perform a peeling operation about 1.5 times as large as the case of using water (water temperature of 20 ° C.). this is,
This is considered to be because the steam supply time is about ／ of the time when the water having the water temperature of 20 ° C. is supplied.

Further, in the wallpaper peeling device, since the water is vigorously jetted using the energy of the water vapor, the diffusion area is not so large, and a large amount of water can be jetted at a time. The amount of water can also be adjusted with a valve. In addition, since the water can be heated and heated using the energy of steam, the effect is higher than that of water injection.

On the other hand, a commercially available sprayer has fine water particles and cannot eject a large amount of water at a time. Diffusion also spreads over a large area, so there is a risk that it will fall on pillars and other parts and get wet.

In addition, the integrated type has an advantage that when working in a high place (a ceiling or a stairwell) or the like, it is not necessary to change the machine or to go down once and troublesome.

[0048]

As described above, according to the present invention, in the present stripping method, it is possible to obtain a wallpaper stripping method capable of performing the stripping operation more quickly than the conventional stripping method.
Further, the present peeling apparatus has an effect that a wallpaper peeling apparatus capable of quickly performing a wallpaper peeling operation of a step of spraying hot water and a step of filling with water vapor can be obtained.

[Brief description of the drawings]

FIG. 1 is a front view illustrating a configuration of a wallpaper peeling device according to an embodiment of the present invention.

FIG. 2 is a side view of the wallpaper peeling device shown in FIG.

FIG. 3 is an explanatory view showing the entire configuration of the wallpaper peeling device shown in FIG. 1;

FIG. 4 is an explanatory diagram showing a configuration of a main part of a switching unit of the wallpaper peeling device shown in FIG. 1;

FIG. 5 is an explanatory diagram for explaining an operation of a main part of the switching means shown in FIG. 4;

FIG. 6 is an explanatory diagram showing a configuration of a main part of a water / steam supply unit of the wallpaper peeling device shown in FIG. 1;

FIG. 7 is an explanatory diagram for explaining the operation of the wallpaper peeling device shown in FIG. 1;

FIG. 8 is a front view showing a configuration of a wallpaper peeling device according to another embodiment.

FIG. 9 is a side view of the wallpaper peeling device shown in FIG. 8;

FIG. 10 is an explanatory diagram showing a configuration of a main part of a switching means of a section AA of the wallpaper peeling device shown in FIG. 8;

11 is an explanatory view showing the configuration of the spherical three-way valve shown in FIG. 10; FIG. 11A is a front view, and FIGS. 11B and 11C are perspective views of the spherical three-way valve.

[Explanation of symbols]

 (10) (80)… wallpaper peeling device, (11) (81)… hood for peeling, (12) (82)… top plate member, (13) (83)… frame member, (14) (84)… (15) (85)… Steam outlet, (16) (86)… Handle, (17) (87)… Switching valve, (18) (88)… Switching cock, ( 19) (89)… Steam pipe, (20) (90)… Ejector, (31)… Steam generator, (32) (92)… Steam supply pipe, (33)… Water tank, (34) (94) )… Water supply pipeline, (61)… Venturi section, (62)… pipe, (63)… water pipe,

Continued on the front page (72) Inventor Toshiki Shinkawa 4649 Shimo Aso, Takaoka City, Toyama Prefecture Inside Yayoi Chemical Industry Co., Ltd. (72) Inventor Kenichi Maekawa 4649 Shimo Aso, Takaoka City, Toyama Prefecture Yayoi Chemical Industry Co., Ltd.

Claims (5)

[Claims] 1. a step of supplying hot water to wallpaper on a surface to be separated which has been limited in advance; a step of supplying steam to the surface to be separated to which the hot water has been supplied; Removing the swollen wallpaper on the surface to be peeled off. 2. A hot water jetting means for supplying hot water to the wallpaper on the surface to be peeled, using pressurized steam as a driving flow, heating water while taking water into the driving flow, and injecting the water onto the wallpaper on the surface to be peeled. The method according to claim 1, wherein the method is performed by the following method. 3. A peeling hood that forms an enclosed space of a limited area on the wallpaper on the surface to be peeled, and fills and holds water vapor in the surrounded space; and an opening is provided in the peeling hood; A steam supply means for introducing pressurized steam therein, and an opening in the peeling hood, wherein the pressurized steam supplied by the steam supply means is used as a driving flow, and water is taken into the driving flow to form the peeling hood. A hot water jetting means for jetting the wallpaper corresponding to the surrounding space. 4. The wallpaper stripping device according to claim 3, wherein the hot water jetting means communicates with the jetting opening provided in the stripping hood, and a part of the pipe is contracted. A wallpaper characterized by comprising a pipeline through which pressurized steam having a venturi portion with a diameter flows, a water pipeline having one end opened to the venturi portion, and a water tank communicating with the other end of the water pipeline. Stripping device. 5. The wallpaper stripping apparatus according to claim 3, further comprising a switching unit that switches between drawing out the pressurized steam to an opening of the steam supply unit and drawing out the pressurized steam to an opening of the hot water jetting unit. Characteristic wallpaper peeling device.