JPH0482105B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method for manufacturing an embossed waterproof rubber sheet.

More specifically, the present invention relates to a method for producing an embossed waterproof rubber sheet that has excellent air permeability when applied to the surface of a substrate.

[Prior Art] Waterproof rubber sheets are widely used as waterproof sheet materials for buildings, artificial ponds, waste storage facilities, sidewalks, etc.

The surface of this waterproof rubber sheet is not smooth and has an embossed pattern on one or both sides. Such embossed patterns on waterproof rubber sheets are used to improve the adhesion of cosmetic paints applied to the top surface of the waterproof rubber sheet, grooves for adhesive projection effects at the terminal connections of the waterproof sheet, grooves to prevent slipping of pedestrians on the construction surface, etc. It has the role of

Therefore, the embossed patterns on conventional waterproof rubber sheets are intended to serve as grooves to improve the adhesive strength of cosmetic paints, grooves for adhesive projection effects, and anti-slip grooves for pedestrians on the construction surface. The heights were at the same level and discontinuous.

That is, as shown in FIG. 5, the embossed pattern of the embossed patterned waterproof rubber sheet 30 obtained by the conventional patterned waterproof rubber sheet manufacturing method is similar to that of the same-level bank 30 with the same height around the concave portion 30. It is surrounded by a. Therefore, when the conventional embossed patterned waterproof rubber sheet 30 as shown in FIG. Volatile residues such as solvent, moisture, air, etc. of the adhesive 6 generated between the surface of the adhesive 6 and the surface of the adhesive 7 cannot be volatilized to the outside air, and as a result, the occurrence of defective bulges 8 during construction is unavoidable. Ta.

[Problems to be Solved by the Invention] The present invention has been made based on the above points, and its purpose is to solve the above-mentioned drawbacks of the prior art and to provide an embossed waterproof material with excellent breathability. An object of the present invention is to provide a method for manufacturing a rubber sheet.

[Means for Solving the Problems] The gist of the present invention is that a high-temperature unvulcanized rubber sheet is provided with roll deep grooves and roll ridges sequentially arranged in a ridge shape on the outer periphery of a roll. An embossed unvulcanized waterproof rubber sheet with an embossed pattern is made by passing it through an embossed roll having shallow roll grooves cut at equal intervals so as to intersect the longitudinal line of the ridges. The object of the present invention is to continuously vulcanize the embossed unvulcanized waterproof rubber sheet to obtain an embossed waterproof rubber sheet.

In the present invention, the base rubber material of the unvulcanized rubber sheet may be any material that has properties that can be used practically as a waterproof rubber sheet, such as excellent water resistance, weather resistance, and mechanical properties, such as ethylene propylene rubber, chloroprene rubber, and chloroprene rubber. Sulfonated polyethylene rubber or the like can be used. These base rubber materials are kneaded with a vulcanizing agent, a lubricant, a reinforcing agent, an anti-aging agent, etc. using a kneading roll to form an unvulcanized rubber compound.

The high-temperature unvulcanized rubber sheet is obtained by directly drawing out the unvulcanized rubber compound from a kneading roll as an unvulcanized rubber sheet, or by feeding it into a calender roll to form an unvulcanized rubber sheet. This kneading roll
The roll temperature of the calendar roll is such that the pattern can be easily engraved on the unvulcanized rubber sheet passed through the embossing roll, and it also prevents rubber burning (scorch phenomenon).
Any temperature is sufficient as long as the temperature does not occur, for example, a temperature of 50 to 110°C. This temperature range is appropriately selected depending on the type and composition of the base rubber material of the unvulcanized rubber sheet.

In the present invention, the roll deep grooves on the outer periphery of the embossing roll are literally deeper than the roll shallow grooves, so that there is a difference in depth between the two grooves. The difference in depth between the two grooves is not particularly limited, but from the viewpoint of breathability and smoothness, it is preferably about 0.05 to 25 mm.

In the present invention, any vulcanizing device may be used as long as it can vulcanize the patterned unvulcanized waterproof rubber sheet by passing it continuously. Although the vulcanization temperature varies depending on the type and composition of the base rubber material of the unvulcanized rubber sheet, a range of 120 to 220°C is usually appropriate.

[Function] In the method for manufacturing an embossed waterproof rubber sheet of the present invention, a high-temperature unvulcanized rubber sheet is prepared by arranging deep roll grooves and roll ridges in sequence on the outer periphery of a roll. An embossed unvulcanized waterproof rubber sheet with an embossed pattern is made by passing through an embossing roll having shallow grooves cut at equal intervals so as to intersect the longitudinal line of the ridges, and after this, the embossed rubber sheet is embossed. By continuously vulcanizing an unvulcanized waterproof rubber sheet to create an embossed waterproof rubber sheet, we are able to form deep grooves along one side of the sheet and shallow grooves that intersect with the longitudinal direction of the deep grooves with high precision. The objective is to produce embossed waterproof rubber sheets with high productivity.

Since two-way intersecting grooves with different depths are formed on the surface of the embossed waterproof rubber sheet obtained by the method for producing an embossed waterproof rubber sheet of the present invention, it is possible to construct the embossed waterproof rubber sheet by using an adhesive or the like on the substrate surface. At this time, even if volatile components such as solvent, moisture, and air are generated at the adhesive interface, they can be effectively volatilized into the outside air, and as a result, blistering defects on the construction surface can be significantly eliminated.

[Example] Next, an example of the method for manufacturing an embossed waterproof rubber sheet of the present invention will be described with reference to the drawings.

Fig. 1 is a line explanatory diagram showing an example of the manufacturing method of the embossed waterproof rubber sheet of the present invention, Fig. 3 is an enlarged explanatory diagram of the main part thereof, and Fig. 2 is a line diagram showing an example of the manufacturing method of the embossed waterproof rubber sheet of the present invention. FIG. 2 is a partially enlarged perspective explanatory view showing the surface condition of an embossing roll 2 used in an example of the manufacturing method.

In FIGS. 1 to 3, 1 is a high-temperature calender roll, 2 is an embossing roll, 3 is a continuous vulcanizer, and 4 is a winding device.

As shown in FIG. 2, the embossing roll 2 has V-shaped deep roll grooves 21 and square pyramidal roll ridges arranged sequentially in a ridge shape on the outer periphery of the roll, and the longitudinal lines of the ridges intersect. Shallow roll grooves 22 are formed by cutting the ridges at equal intervals so that the roll grooves 22 are cut into the ridges at equal intervals.

Next, a method for manufacturing a patterned waterproof rubber sheet of the present invention will be explained using the apparatus shown in FIGS. 1 to 3.

First, an unvulcanized rubber compound 10 is drawn out using a high-temperature calender roll 1 as a high-temperature unvulcanized rubber sheet 10a having a predetermined thickness and a predetermined width. Next, this drawn out high temperature unvulcanized rubber sheet 10
a is fed into an embossing roll 2 to form an embossed unvulcanized rubber sheet 10b. Next, this embossed unvulcanized rubber sheet 10b is passed through the vulcanizing device 3 without contacting other members, such as guide rollers, and continuously vulcanized to form an embossed waterproof rubber sheet 10c. The embossed waterproof rubber sheet 10c obtained in step 1 is wound up using a winding machine 4.

FIG. 4 is an explanatory cross-sectional view showing a state in which the thus obtained embossed waterproof rubber sheet 10c is applied to the concrete body 7 via the adhesive 6 so that the embossed surface faces downward.

As can be seen from FIG. 4, this construction part has a bank 31 corresponding to the roll deep groove 21 of the embossing roll 2 and a roll deep groove 2 of the embossing roll 2.
A bank 32 corresponding to No. 2 is formed. As a result, when installing the embossed waterproof rubber sheet 10c
Even if the solvent of the adhesive 6, moisture, air, etc. remain between the adhesive 6 and the cocrete base 7, these volatile residues will be volatilized to the outside air as the low bank 32 acts as a ventilation path in the → direction. As a result, defects caused by bulges on the construction surface can be completely eliminated.

[Effects of the Invention] According to the method for manufacturing an embossed waterproof rubber sheet of the present invention, an embossed waterproof rubber sheet in which embossments serving as ventilation passages are attached to the surface of the waterproof rubber sheet with high precision can be produced with high productivity. As a result, a smooth and aesthetically pleasing waterproof construction area can be obtained.
Industrially useful.

[Brief explanation of the drawing]

Fig. 1 is a line explanatory diagram showing one embodiment of the method for producing an embossed waterproof rubber sheet of the present invention;
The figure is an enlarged explanatory view of the main part, and Fig. 2 is a partially enlarged perspective explanatory view showing the surface condition of the embossing roll 2 used in an embodiment of the manufacturing method of the embossed waterproof rubber sheet of the present invention. Fig. 4 is an explanatory cross-sectional view showing the embossed waterproof rubber sheet obtained by an embodiment of the method for manufacturing a patterned waterproof rubber sheet of the present invention applied to a concrete base, and Fig. 5 is a conventional patterned waterproof rubber sheet. FIG. 6 is an explanatory view of the surface of the patterned waterproof rubber sheet obtained by the method for manufacturing a waterproof rubber sheet, and FIG. 6 is an explanatory cross-sectional view showing the patterned waterproof rubber sheet of FIG. 5 applied to a concrete body. 1: Calendar roll, 2: Embossing roll, 3: Continuous vulcanization device, 4: Winding device, 6: Adhesive, 7: Concrete base, 8: Bulging defective area, 1
0: unvulcanized rubber compound, 10a: unvulcanized rubber sheet, 10b: embossed unvulcanized rubber sheet, 10c: embossed waterproof rubber sheet, 21:
Roll deep groove, 22: Roll shallow groove, 30: Waterproof rubber sheet with embossed pattern, 30i: Same level bank,
30ro: recess, 31: high level embankment, 32: low level embankment.

Claims (1)

[Claims] 1 A high-temperature unvulcanized rubber sheet is made into an embossed unvulcanized waterproof rubber sheet using an embossing stamp roll,
In the method for manufacturing an embossed waterproof rubber sheet in which an embossed unvulcanized waterproof rubber sheet is continuously vulcanized, the embossed pattern by the embossed roll is formed by forming deep roll grooves and roll ridges in sequence on the outer periphery of the roll. A method for manufacturing an embossed waterproof rubber sheet, characterized in that the process is carried out using an embossed roll having shallow grooves cut into the ridges at equal intervals so as to intersect the longitudinal line of the ridges. .