JP2001062922A - Connecting method for waterproof sheet and heating instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To permit the connection of waterproof sheets without spoiling a water proofing effect even when the waterproof sheet is thick or the temperature is reduced drastically. SOLUTION: Waterproof sheets are connected by a method wherein the superposed part 1 of the waterproof sheets B, C, covering a waterproof treatment objective matter A, is headed and the waterproof sheets in the superposed part after heating are heated and connected by an adhesive interposed between the waterproof sheets. In this case, the superposed part is heated from the outer surface side of the same while pushing each waterproof sheets so as to be brought into close contact with each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of heating an overlapping portion of waterproof sheets covering an object to be waterproofed.
The present invention relates to a waterproofing sheet joining method for joining waterproof sheets at overlapping portions after heating with an adhesive material interposed between the waterproof sheets.

[0002]

2. Description of the Related Art The above-mentioned method of joining waterproof sheets is difficult to keep the overlapping portions of waterproof sheets that are hard at low temperatures in a tight contact state at the time of joining in cold regions or outdoors in winter, resulting in poor joining. In order to solve the problem that is likely to occur, the overlapping portions of the waterproof sheets are heated so that the softened waterproof sheets after heating can be sufficiently adhered and joined. In a conventional waterproof sheet joining method, an overlapping portion of the waterproof sheets is heated by a heating tool inserted between the waterproof sheets.

[0003]

For this reason, when the heater is heated by the heating tool, the amount of heat radiated from the outer waterproof sheet is large, the temperature of the waterproof sheet hardly rises, and the thickness of the waterproof sheet is large. When the temperature and the temperature drop are large, it is difficult to sufficiently heat the waterproof sheet overlapped on the outside, so that there is a defect that the bonding effect occurs and the waterproof effect is easily impaired. Also, in order to solve this drawback, for example, if the heating temperature of the heating tool is increased, the temperature of the portion in contact with the heating tool becomes too high, and the waterproof sheet may melt out. There is a disadvantage that the effect is easily lost.

[0004] The present invention has been made in view of the above circumstances, and it is an object of the present invention to enable joining without impairing the waterproof effect even when the thickness of the waterproof sheet is large or when the temperature is greatly reduced.

[0005]

According to a first feature of the present invention, the overlapping portions of the waterproof sheets covering the object to be waterproofed are heated, and the heated waterproof sheets are overlapped with each other. A method of joining waterproof sheets joined by an adhesive material interposed between the waterproof sheets, wherein the overlapping parts are pressed from the outer surface side while pressing so that the waterproof sheets are closely attached to each other. is there. [Action] Since the overlapping portions of the waterproof sheets are heated from the outer surface side, the outer waterproof sheets which are easily overlapped can be heated to a higher temperature on the outer surface side where the temperature is easily lowered, and the waterproof sheets of the overlapping portions adhere to each other. Since the heat is transmitted while pressing the waterproof sheet, heat is transferred from the outer waterproof sheet to the inner waterproof sheet. Can be heated. [Effect] Therefore, the waterproof sheet can be heated so that the waterproof sheet does not melt out while sufficiently heating the waterproof sheet overlapping on the outside, so that the waterproof effect is not impaired even when the thickness of the waterproof sheet is large or the temperature drop is large. Can be joined to

A feature of the invention according to claim 2 is that the position of the heating tool pressed against the outer surface side of the overlapping portion is sequentially changed along the side edge of the overlapping portion for heating. [Action] While heating the overlapping portion by sequentially changing the position of the heating tool, the heated overlapping portion can be sequentially joined. [Effect] Accordingly, the overlapped portion can be efficiently heated in accordance with the progress of the joining operation of the waterproof sheets without the preciously heated overlapped portion cooling before joining.

A feature of the invention according to claim 3 is that the position of the heating tool is sequentially changed by sliding contact along the side edge of the overlapping portion. [Operation] In accordance with the progress of the joining operation of the waterproof sheets, heating can be performed while shifting the position of the heating tool by sliding movement along the side edge of the overlapping portion. [Effect] The waterproof sheets can be joined with good timing in order from the sufficiently heated overlapping portion.

According to a fourth aspect of the present invention, there is provided a heating tool for use in the waterproofing sheet joining method according to the second aspect, wherein the bottom has a heating plate pressed against an outer surface of the overlapping portion. And a supply port for supplying heated air to the inside of the box. [Operation] The heating plate is heated by the heated air supplied to the inside of the box, and the heated heating plate is pressed against the outer surface of the overlapping portion, so that the overlapping portion can be heated from the outer surface. [Effect] The heating structure of the heating plate can be simplified irrespective of the dimensions of the heating plate, as compared with the case where the heating device is configured by incorporating a heating element that generates heat electrically.

A feature of the invention according to claim 5 is that the heating plate is provided so as to be slidably movable along the side edge of the overlapping portion while pressing the heating plate against the outer surface of the overlapping portion. [Function] While heating the heating plate without separating it from the overlapping portion, the heating plate can be heated while being shifted by sliding movement along the side edge of the overlapping portion in accordance with the progress of the joining operation of the waterproof sheets. [Effect] While efficiently heating the overlapping portion, the waterproof sheets can be joined with good timing in order from the sufficiently heated overlapping portion.

[0010] A feature of the invention according to claim 6 is that a connection portion capable of connecting the heating air supply nozzle to the supply port is provided in the box. [Operation] In use, the supply nozzle of the heated air can be connected to the box, and when not in use, the supply nozzle can be removed from the box. [Effect] Handling of the heating tool during storage and transportation is facilitated.

A feature of the invention according to claim 7 is that a collision plate for colliding and dispersing the heated air supplied through the supply port is provided in the inner space of the box. [Operation] The heated air supplied through the supply port can collide with the collision plate and be dispersed inside the box.
[Effect] It is easy to uniformly heat the heating plate with heated air.

According to a characteristic feature of the present invention, an accommodating portion for accommodating the adhesive is provided in the box, and an outlet of heated air supplied to the inside of the box faces the accommodating portion. At one point. [Operation] The adhesive can be moved to the vicinity of the joint in accordance with the movement of the heating tool, and the adhesive stored in the storage can be heated by the heated air blown out from the outlet into the storage. it can. [Effect] The work efficiency can be improved by eliminating the need to separately move the adhesive container, and the appropriate viscosity is easily maintained by using the heated air supplied to the box so that the adhesive can be easily applied. it can.

A ninth aspect of the present invention is characterized in that the storage portion is provided so as to be located rearward in the moving direction of the box. [Function] When the position of the heating tool is sequentially changed along the side edge of the overlapping portion and heating is performed, and when the joining is sequentially performed from the overlapping portion after heating, it is possible to join with the adhesive near the overlapping portion after heating. . [Effect] It is easy to apply the adhesive to the overlapping portion after heating.

According to a tenth aspect of the present invention, the outlet of the heated air supplied to the inside of the box is directed forward in the moving direction of the box. [Function] 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 pre-heated using the heating air supplied to the box body. . [Effect] The overlapping portion can be efficiently heated.

An eleventh feature of the present invention resides in that an engaging portion is provided which engages along a side edge of the overlapping portion. [Operation] When the position of the heating tool is sequentially changed along the side edge of the overlapping portion and heating is performed, the engaging portion can be engaged along the side edge of the overlapping portion. [Effect] It is easy to move the heating tool along the side edge of the overlapping portion. When the heating plate is heated while being shifted by sliding movement along the side edge of the overlapping portion, the engaging portion is engaged along the side edge of the overlapping portion so that the heating plate does not come off from the overlapping portion. However, the sliding movement can be efficiently performed.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIGS. 1 and 2 show a heating tool D for heating an overlapping portion 1 of waterproof sheets B and C covering a roof part A of a building as an object to be waterproofed. D is moved in one direction along the side edge 2 of the overlapping portion 1 to heat the overlapping portion 1, and the heated waterproof sheets B and C of the overlapping portion 1 are placed between the waterproof sheets B and C after heating. Are bonded in a watertight manner with an adhesive E interposed therebetween. The waterproof sheets B and C are strip-shaped sheets mainly composed of an organic polymer having a solvent welding property such as a vinyl chloride resin, and are coated with a solvent E as an adhesive applied to an overlapping surface of the waterproof sheets B and C. , Those waterproof sheets B, C
They are joined together.

The heating tool D applies hot air G as heating air to be blown from a supply nozzle F1 of a hot air supply device F to a box body 4 having a flat heating plate 3 at the bottom for pressing against the outer surface of the overlapping portion 1. A hot air supply port 5 for supplying the inside of the box 4 is provided, and a front inclined plate 6 in which one end in the longitudinal direction of the heating plate 3 is bent obliquely upward is directed forward in the moving direction. The heating plate 3 is provided so as to be slidable along the side edge 2 of the overlapping portion 1 while pressing the heating plate 3 against the outer surface of the overlapping portion 1. The box 4 is formed of an aluminum alloy plate in a vertically long box shape having a width wider than the overlapping width of the overlapping portion 1, and a supply nozzle F 1 of a hot air supply machine F is provided.
And a cylindrical connecting portion 7 that can be freely connected to the hot air supply port 5 by inserting
And a collision plate 8 for colliding and dispersing the hot air G supplied through the hot air supply port 5 is inclined so as to be lower toward the front inclined plate 6 side, and is provided in the inner space 9 of the box 4. . The collision plate 8 is provided so as to protrude from the left and right sides of the box body 4, and the protrusion 8 a of the collision plate 8 can prevent the heating tool D from tipping over.

On the upper surface of the box 4, a storage section 11 for storing the solvent E together with the storage container 10 is provided so as to be shifted rearward in the moving direction of the box 4. The storage section 11 is provided so as to surround the storage container 10 in a U-shape with an enclosure wall 13 extending upward from a side plate 12 on the rear side in the movement direction of the box body 4, and is supplied inside the box body 4. The hot air G outlet 14 is provided in a U-shaped slit shape between the rising portion of the surrounding wall 13 and the top plate 15 of the box body 4 so as to face the inside of the storage portion 11. The solvent E contained in the storage container 10 can be heated by hot air G1 blown out of the storage container 10.

Next, while heating the overlapping portion 1 of 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 separated from each other by the waterproof sheets B and C. A method of joining a waterproof sheet to be joined with a solvent E interposed between the first and the second C will be described. As shown in FIG. 1, the supply nozzle F1 is connected to the hot air supply port 5 of the heating tool 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. 3A, the heating plate 3 is placed on the overlapping portion 1 and the heating tool D is placed so that the front inclined plate 6 faces forward in the moving direction. The overlap portion 1 is heated from the outer surface side while the waterproofing sheets B and C of the overlap portion are pressed against each other by the weight of the heating tool D by their own weight.

Then, as shown in FIG. 3 (b), the position of the heating tool D pressed against the outer surface side of the overlapping portion 1 is sequentially changed by sliding movement along the side edge 2 of the overlapping portion 1 and heating is performed. The solvent E contained in the storage container 10 of the storage section 11 is sequentially applied between the waterproof sheets B and C of the overlapping portion 1 after heating, and the waterproof sheets B and C are sequentially joined.

[Second Embodiment] FIG. 4 shows another embodiment of the heating device D, in which the outlet 16 for the hot air G supplied to the inside of the box 4 is formed in the front inclined plate 6 and the box 4 is heated. Hot air G blown out from the outlet 16
2, the overlapping portion 1 on the front side in the moving direction can be preheated. Other configurations are the same as those of the first embodiment.

[Third Embodiment] FIG. 5 shows another embodiment of the heating tool D, in which an engaging portion 17 engaging along the side edge 2 of the overlapping portion 1 is formed along the lateral side edge of the heating plate 3. Step 18 provided
In order to prevent the heating plate 3 from coming off the overlapping portion 1, the sliding portion 18 can be efficiently slid and moved while the step 18 is engaged along the side edge 2 of the overlapping portion 1. . Other configurations are the same as those of the first embodiment.

[Fourth Embodiment] FIG. 6 shows another embodiment of the heating device D, in which an engaging portion 17 engaging along the side edge 2 of the overlapping portion 1 is formed along the lateral side surface of the box 4. Up and down movable engagement plates 19 are provided separately on the left and right sides of the box body 4, and the lower end of one of the engagement plates 19 is projected below the lower surface of the heating plate 3, and the engagement plates 19 are provided. Are engaged along the side edge 2 of the overlapping portion 1. In the case of this embodiment, even if the side edge 2 of the overlapping portion 1 is located on either the left or right side of the box 4, the engagement plate 19 is attached to the side edge 2.
Can be efficiently slid and moved so that the heating plate 3 does not come off the overlapping portion 1 by engaging the lower end of the heating plate 3.
Other configurations are the same as those of the first embodiment.

[Fifth Embodiment] FIG. 7 shows another embodiment of the heating tool D, in which an engaging portion 17 which engages along the side edge 2 of the overlapping portion 1 is boxed along the bottom surface of the heating plate 3. An engaging member 20 that is slidable is provided on both the left and right sides of the body 4, and the engaging member 20 is moved to one of the left and right sides of the box 4.
The engaging member 20 is engaged along the side edge 2 of the overlapping portion 1. 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 4, the engaging member 20 is engaged with the side edge 2, and the heating plate 3
Can be efficiently slid and moved so as not to come off from the overlapping portion 1. Other configurations are the same as those of the first embodiment.

[Other Embodiments] The joining method of the waterproof sheet according to the present invention lifts the heating tool pressed against the outer surface side of the overlapping portion from the overlapping portion, and presses the heating tool against the outer surface side of the front overlapping portion to be heated next. Heating may be performed sequentially along the side edge of the overlapping portion. 2. In the waterproofing sheet joining method according to the present invention, the cylindrical heating plate may be rolled while being pressed against the outer surface of the overlapping portion, and the overlapping portion may be heated from the outer surface. 3. The bonding method of the waterproof sheet according to the present invention uses, as an adhesive, a mixture of a solvent and an adhesive in addition to a solvent, a resin, a rubber, a polyisobutylene, a polyvinyl ether, a chlorinated rubber, or the like. Or a hot melt adhesive may be used, and these are collectively referred to as an adhesive. 4. The heating tool used for the waterproofing 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 waterproofing sheet joining method according to the present invention may have a storage portion for storing the adhesive in the tank. 6. The heating tool used in the waterproofing sheet joining method according to the present invention is configured such that the engaging portion that engages along the side edge of the overlapping portion is rotationally moved about the vertical axis on both the left and right sides of the box along the bottom surface of the heating plate. A free engaging member may be provided, and the engaging member may be moved to one of the left and right sides of the box to engage the engaging member 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 a heating tool.

FIG. 3 is an explanatory view of a joining method of a waterproof sheet.

FIG. 4 is a longitudinal sectional view of a main part showing a heating tool according to a second embodiment.

FIG. 5 is a cross-sectional view showing a heating tool according to a third embodiment.

FIG. 6 is a cross-sectional view showing a heating tool according to a fourth embodiment.

FIG. 7 is a cross-sectional view showing a heating device according to a fifth embodiment.

[Explanation of symbols]

 Reference Signs List A Waterproofing target B Waterproof sheet C Waterproof sheet D Heating tool E Adhesive material F1 Supply nozzle G Heated air 1 Overlapping part 2 Side edge 3 Heating plate 4 Box 5 Supply port 7 Connection part 8 Collision plate 9 Inner space 11 Storage part 14 outlet 16 outlet 17 engaging part

Continued on the front page F term (reference) 2D018 DA03 4F211 AA15 AD05 AD08 AD29 AG01 AH43 AH46 AK01 TA03 TC02 TC13 TD11 TH01 TH02 TH06 TJ13 TJ14 TJ29 TN07 TN11 TN24 TN59 TN67 TQ01

Claims (11)

[Claims] 1. A waterproofing device in which overlapping portions of waterproof sheets covering an object to be waterproofed are heated and the heated waterproof sheets are joined with an adhesive material interposed between the waterproof sheets. A method of joining sheets, wherein the overlapping portions are heated from the outer surface side while pressing so that the waterproof sheets at the overlapping portions come into close contact with each other. 2. The waterproofing sheet joining method according to claim 1, wherein the position of the heating tool pressed against the outer surface side of the overlapping portion is sequentially changed along the side edge of the overlapping portion and heating is performed. 3. The method of joining waterproof sheets 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. 4. A heating tool used in the waterproofing sheet joining method according to claim 2, wherein a heating plate pressed on an outer surface side of the overlapping portion is provided on a box having a bottom portion, and the inside of the box is heated. A heating tool provided with a supply port for supplying air. 5. The heating tool according to claim 4, wherein the heating plate is slidably movable along a side edge of the overlapping portion while pressing the heating plate against an outer surface of the overlapping portion. 6. The heating tool according to claim 4, wherein a connection portion capable of connecting the supply nozzle of the heating air to the supply port is provided in the box. 7. The heating tool according to claim 4, wherein a collision plate is provided in an inner space of the box so as to collide and disperse the heated air supplied through the supply port. 8. The storage device according to claim 4, wherein a storage portion for storing the adhesive is provided in the box, and an outlet of heated air supplied to the inside of the box faces the storage portion. The heating tool according to claim 1. 9. The heating tool according to claim 8, wherein the storage portion is provided so as to be located rearward in the moving direction of the box. 10. The heating tool according to claim 4, wherein the outlet of the heated air supplied to the inside of the box faces toward the front side in the moving direction of the box. 11. The heating tool according to claim 4, further comprising an engaging portion that engages along a side edge of the overlapping portion.