JP4382204B2 - Waterproof sheet joining method and heating tool - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waterproof sheet in which the overlapping portions of the waterproof sheets covering the waterproof processing object are heated, and the waterproof sheets in the overlapping portions after heating are joined with an adhesive interposed between the waterproof sheets. It relates to the joining method.
[0002]
[Prior art]
The above-mentioned waterproof sheet joining method has a problem in that it is difficult to keep the overlapping portions of the waterproof sheets that are hardened at low temperatures in close contact with each other at the time of joining in cold areas or outdoors in winter, and it is easy to cause poor joining. In order to solve this problem, the overlapping portions of the waterproof sheets are heated so that the softened waterproof sheets after the heating are sufficiently adhered to each other so that they can be joined.
In the conventional waterproof sheet joining method, the overlapping portions of the waterproof sheets are heated by a heating tool inserted between the waterproof sheets.
[0003]
[Problems to be solved by the invention]
For this reason, at the time of heating with a heating tool, there is a large amount of heat radiation from the waterproof sheet overlapping on the outside, the temperature of the waterproof sheet is difficult to rise, and if the thickness of the waterproof sheet is thick or the temperature drop is large, Since the waterproof sheets overlapped on the outside are difficult to heat sufficiently, there is a drawback that the waterproof effect is easily lost due to poor bonding.
In order to solve this drawback, for example, if the heating temperature by the heating tool is increased, the temperature of the portion in contact with the heating tool becomes too high and the waterproof sheet may be melted. There is a drawback that the effect is easily lost.
[0004]
This invention is made | formed in view of the said situation, Comprising: Even when the thickness of a waterproof sheet is thick, or when a temperature fall is large, it aims at enabling it to join, without impairing a waterproof effect.
[0005]
[Means for Solving the Problems]
According to the first aspect of the present invention, the overlapping portions of the waterproof sheets covering the waterproof treatment object are heated with a heating tool, and the waterproof sheets of the overlapping portions after the heating are placed between the waterproof sheets. It is a waterproof sheet joining method for joining with an interposed adhesive, while warming the adhesive with the heat of the heating tool, while pressing the waterproof parts so that the overlapping waterproof sheets are in close contact with the heating tool , The overlapping portion is heated from the outer surface side, and the adhesive is applied between the waterproof sheets of the overlapping portion after heating to join the waterproof sheets together.
[Operation] Since the overlapping part of the waterproof sheets is heated from the outer surface side, the outer side of the waterproof sheet that tends to lower the temperature can be heated to a higher temperature, and the waterproof sheets of the overlapping parts are in close contact with each other. Because the heat is transferred from the waterproof sheet that overlaps the outer side to the waterproof sheet that overlaps the inner side, the entire overlapping portion is heated to a higher temperature as the waterproof sheet overlaps the outer side. Can be heated.
[Effects] Accordingly, the waterproof sheet overlapping the outside can be heated sufficiently so that the waterproof sheet does not melt, so that the waterproof effect is not impaired even when the thickness of the waterproof sheet is large or the temperature is greatly reduced. Can be joined.
[0006]
The characteristic configuration of the invention described in claim 2 is that heating is performed by sequentially changing the position of the heating tool pressed against the outer surface side of the overlapping portion along the side edge of the overlapping portion.
[Operation] While heating the overlapping portions by sequentially changing the position of the heating tool, the overlapping portions after the heating can be sequentially joined.
[Effect] Therefore, the overlapping portion can be efficiently heated in accordance with the progress of the joining work between the waterproof sheets without causing the overlapping heating portion to cool before joining.
[0007]
The characteristic configuration of the invention described in claim 3 is that the position of the heating tool is sequentially changed by sliding movement along a side edge of the overlapping portion.
[Operation] Heating can be performed while shifting the position of the heating tool by sliding contact along the side edge of the overlapping portion in accordance with the progress of the joining work between the waterproof sheets.
[Effect] The waterproof sheets can be joined together in a timely manner in order from the sufficiently heated overlapping portion.
[0008]
According to a fourth aspect of the present invention, there is provided a heating device used in the waterproof sheet joining method according to the second aspect, wherein a heating plate that is pressed against the outer surface side of the overlapping portion is provided in a box body, A supply port for supplying heated air to the inside of the box body and a storage portion for storing the adhesive are provided , and a blowout port for the heated air supplied to the inside of the box body faces the storage portion. In the point.
[Operation] The heating plate is heated with heated air supplied to the inside of the box, and the heated heating plate is pressed against the outer surface side of the overlapping portion, so that the overlapping portion can be heated from the outer surface side.
In addition, the adhesive can be moved close to the joining location in accordance with the movement of the heating tool, and the adhesive stored in the storage unit can be heated with heated air blown from the outlet to the storage unit. .
[Effect] The heating structure of the heating plate can be simplified regardless of the size of the heating plate, as compared with the case where the heating tool is configured by incorporating a heating element that generates heat electrically.
In addition, it is possible to improve the work efficiency by eliminating the trouble of separately moving the container of the adhesive, and it is possible to maintain the appropriate viscosity that allows easy application of the adhesive using the heated air supplied to the box. .
[0013]
The characteristic configuration of the invention described in claim 5 is that the storage portion is provided close to the rear side in the moving direction of the box.
[Operation] When heating is performed by sequentially changing the position of the heating tool along the side edge of the overlapped portion and joining is performed in order from the overlapped portion after heating, it is possible to bond with an adhesive near the overlapped portion after heating. .
[Effect] It is easy to apply an adhesive to the overlapping portion after heating.
[0014]
The characteristic configuration of the invention described in claim 6 resides in that a blowout port for the heated air supplied to the inside of the box body faces the front side in the moving direction of the box body.
[Operation] When heating is performed by sequentially changing the position of the heating tool along the side edge of the overlapping portion, the overlapping portion to be heated can be preheated using the heated air supplied to the box. .
[Effect] The overlapping portion can be efficiently heated.
[0015]
The characteristic configuration of the invention described in claim 7 resides in that the blowout port of the heated air supplied to the inside of the box body faces obliquely downward on the front side in the moving direction of the box body .
[Operation] When heating is performed by sequentially changing the position of the heating tool along the side edge of the overlapping portion, the overlapping portion to be heated can be preheated using the heated air supplied to the box. .
[Effect] The overlapping portion can be heated more efficiently.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[First Embodiment]
1 and 2 show a heating tool D for heating an overlapping portion 1 of waterproof sheets B and C covering a rooftop portion A of a building as an object to be waterproofed. An adhesive in which the waterproof sheets B and C of the overlapped portion 1 after heating are interposed between the waterproof sheets B and C while being moved in one direction along the side edge 2 and heating the overlapped portion 1 E is watertightly joined.
The waterproof sheets B and C are strip sheets mainly composed of an organic polymer having a solvent-welding property such as a vinyl chloride resin, and a solvent E as an adhesive applied to the overlapping surfaces of the waterproof sheets B and C. The waterproof sheets B and C are joined together.
[0017]
The heating tool D has hot air G as hot air ejected from a supply nozzle F1 of a hot air supply machine F in a box 4 provided with a flat heating plate 3 pressed on the outer surface side of the overlapping portion 1 in the box. 4 is provided with a hot-air supply port 5 for supplying it to the inside of the heating plate 3, and the front inclined plate 6 in which one end side in the longitudinal direction of the heating plate 3 is bent obliquely upward is directed toward the front side in the moving direction. The plate 3 is slidably moved along the side edge 2 of the overlapping portion 1 while pressing the plate 3 against the outer surface side of the overlapping portion 1.
The box body 4 is formed of an aluminum alloy plate material in a vertically long box shape having a width wider than the overlapping width of the overlapping portion 1, and a hot air supply port is formed by inserting a supply nozzle F1 of the hot air supply machine F. 5 is provided with a cylindrical connecting portion 7 that can be connected to the front, and the collision plate 8 that collides and disperses the hot air G supplied through the hot air supply port 5 is inclined so as to become lower toward the front inclined plate 6 side, It is provided in the inner space 9 of the box 4.
The collision plate 8 is provided in a state of projecting to both the left and right sides of the box body 4, and the protruding portion 8 a of the collision plate 8 can prevent the heating tool D from being overturned.
[0018]
On the upper surface of the box 4, a storage portion 11 that stores the solvent E together with the storage container 10 is provided near the rear side in the moving direction of the box 4.
The storage portion 11 is provided so as to surround the storage container 10 in a U-shape with a surrounding wall 13 extending upward on the side plate 12 on the rear side in the moving direction of the box body 4, and is supplied to the inside of the box body 4. The blowout port 14 for the hot air G is provided in the shape of a U-shaped slit between the rising portion of the enclosure wall 13 and the top plate 15 of the box 4 so as to face the inside of the storage unit 11. The solvent E contained in the storage container 10 can be heated with hot air G1 blown out from the tank.
[0019]
Next, while heating the overlapping portion 1 between the waterproof sheets B and C using the heating tool D, the waterproof sheets B and C of the overlapping portion 1 after heating are placed between the waterproof sheets B and C. The joining method of the waterproof sheet joined with the solvent E interposed in the will be described.
As shown in FIG. 1, the supply nozzle F1 is connected to the hot air supply port 5 of the heater D, and the heating plate 3 is heated to a temperature at which the waterproof sheets B and C are softened, and can be maintained at that temperature. As shown in FIG. 3 (a), the heating plate 3 is mounted on the overlapping portion 1 and the heating tool D is mounted so that the front inclined plate 6 faces the front side in the moving direction. The overlapping portion 1 is heated from the outer surface side while pressing so that the waterproof sheets B and C in the overlapping portion are in close contact with each other by the weight of the heating tool D.
[0020]
Then, as shown in FIG. 3B, heating is performed while sequentially changing the position of the heating tool D pressed against the outer surface side of the overlapping portion 1 by sliding movement along the side edge 2 of the overlapping portion 1, The solvent E contained in the storage container 10 of the storage unit 11 is sequentially applied between the waterproof sheets B and C of the overlapping portion 1 so that the waterproof sheets B and C are sequentially joined.
[0021]
[Second Embodiment]
FIG. 4 shows another embodiment of the heating tool D, and a blowout port 16 for hot air G supplied to the inside of the box 4 is formed in the front inclined plate 6 so as to face the moving direction front side of the box 4. The hot air G2 blown out from the blowout port 16 can preheat the overlapping portion 1 on the front side in the moving direction.
Other configurations are the same as those of the first embodiment.
[0022]
[Third Embodiment]
FIG. 5 shows another embodiment of the heating tool D, in which an engaging portion 17 that engages along the side edge 2 of the overlapping portion 1 is constituted by a step portion 18 provided along the lateral side edge of the heating plate 3. In order to prevent the heating plate 3 from coming off from the overlapping portion 1, the stepped portion 18 can be efficiently slidably moved while being engaged along the side edge 2 of the overlapping portion 1.
Other configurations are the same as those of the first embodiment.
[0023]
[Fourth Embodiment]
FIG. 6 shows another embodiment of the heating tool D, in which an engaging portion 17 that engages along the side edge 2 of the overlapping portion 1 is engaged with an engaging plate 19 that is movable up and down along the lateral side surface of the box 4. The body 4 is provided separately on both the left and right sides, and the lower end of one of the engagement plates 19 protrudes downward from the lower surface of the heating plate 3, and the lower end of the engagement plate 19 is overlapped with the overlapping portion 1 side. It is adapted to be engaged along the edge 2.
In the case of this embodiment, even when the side edge 2 of the overlapping portion 1 is located on either the left or right side of the box body 4, the heating plate 3 overlaps with the side edge 2 by engaging the lower end portion of the engagement plate 19. It can be slid and moved efficiently so as not to deviate from 1.
Other configurations are the same as those of the first embodiment.
[0024]
[Fifth Embodiment]
FIG. 7 shows another embodiment of the heating tool D, and the engaging portion 17 that engages along the side edge 2 of the overlapping portion 1 is slidable to the left and right sides of the box 4 along the bottom surface of the heating plate 3. The engaging member 20 is provided, and the engaging member 20 is moved to either the left or right side of the box 4 so that the engaging member 20 is engaged along the side edge 2 of the overlapping portion 1. It is.
In the case of this embodiment, even when the side edge 2 of the overlapping portion 1 is located on either the left or right side of the box body 4, the engaging member 20 is engaged with the side edge 2, and the heating plate 3 is moved from the overlapping portion 1. It can be slid and moved efficiently so as not to come off.
Other configurations are the same as those of the first embodiment.
[0025]
[Other Embodiments]
1. The waterproof sheet joining method according to the present invention is such that the heating tool pressed against the outer surface side of the overlapping portion is lifted from the overlapping portion and then pressed against the outer surface side of the front overlapping portion to be heated. Heating may be performed by sequentially changing the side edges of the overlapping portion.
2. In the waterproof sheet joining method according to the present invention, the overlapping heating portion may be heated from the outer surface side by rolling while pressing a cylindrical heating plate against the outer surface side of the overlapping portion.
3. The waterproof sheet joining method according to the present invention includes, as an adhesive, a mixture of a solvent and an adhesive in addition to a solvent, a resin system, a rubber system, another polyisobutylene system, a polyvinyl ether system, a chlorinated rubber system, etc. Synthetic adhesives and hot melt adhesives may be used, and they are collectively referred to as adhesives.
4). The heating tool used for the waterproof sheet joining method according to the present invention may be provided with a supply port for supplying heated air so that the heated air can be supplied from the side of the box to the inside thereof.
5. The heating tool used for the waterproof sheet joining method according to the present invention may be provided with a storage portion for storing the adhesive in a tank.
6). The heating tool used in the waterproof sheet joining method according to the present invention rotates the engagement portion that engages along the side edge of the overlapping portion around the vertical axis to the left and right sides of the box along the bottom surface of the heating plate. A free engagement member may be provided, and the engagement member may be moved to either the left or right side of the box so that the engagement member is engaged along the side edge of the overlapping portion.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a heating tool. FIG. 2 is a plan view of the heating tool. FIG. 3 is an explanatory diagram of a waterproof sheet joining method. 5 is a cross-sectional view showing the heating tool of the third embodiment. FIG. 6 is a cross-sectional view showing the heating tool of the fourth embodiment. FIG. 7 is a cross-sectional view showing the heating tool of the fifth embodiment. Explanation】
A Waterproof object B Waterproof sheet C Waterproof sheet D Heating tool E Adhesive material F1 Supply nozzle G Heated air 1 Overlap part 2 Side edge 3 Heating plate 4 Box 5 Supply port 7 Connection part 8 Collision board 9 Inner space 11 Storage part 14 Outlet 16 Outlet 17 Engagement part

Claims (7)

A waterproof sheet is formed by heating the overlapping portions of the waterproof sheets covering the waterproof processing object with a heating tool, and joining the overlapping waterproof sheets after the heating with an adhesive interposed between the waterproof sheets. A joining method,
While heating the adhesive with the heat of the heating tool and pressing the heating tool so that the waterproof sheets of the overlapping portion are in close contact with each other, the overlapping portion is heated from the outer surface side, and the overlapping portion after heating is heated. A waterproof sheet joining method in which the adhesive is applied between the waterproof sheets to join the waterproof sheets together.   The waterproof sheet joining method according to claim 1, wherein heating is performed by sequentially changing the position of the heating tool pressed against the outer surface side of the overlapping portion along the side edge of the overlapping portion.   The waterproof sheet joining method according to claim 2, wherein the position of the heating tool is sequentially changed by sliding movement along a side edge of the overlapping portion. It is a heating tool used for the joining method of the waterproof sheet according to claim 2,
A box provided with a heating plate to be pressed on the outer surface side of the overlapping portion at the bottom, a supply port for supplying heated air to the inside of the box, and a storage unit for storing the adhesive material; A heating tool in which a blowout port of heated air supplied to the inside of the body faces the storage part . The heating tool according to claim 4, wherein the storage portion is provided close to a rear side in the moving direction of the box. The heating tool according to claim 4 or 5, wherein a blowout port for the heated air supplied to the inside of the box body faces the front side in the moving direction of the box body. The heating tool according to any one of claims 4 to 6, wherein a blowout port for the heated air supplied to the inside of the box is faced obliquely downward on the front side in the movement direction of the box.

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