JPS63158156A - Method and apparatus for preparing high viscosity resin sheet using calender roll - Google Patents

Abstract

PURPOSE:To laminate a thick resin sheet having a uniform thickness to a base material, by peeling off the adhesive high viscosity resin transferred to the outer peripheral surface of the second rolling roll by a scraping doctor knife to form a sheet having a specific thickness or more. CONSTITUTION:An adhesive high viscosity resin 5 having a viscosity of about 10,000cps (25 deg.C) or more is supplied between rolls 1, 2 in a kneaded and heated state to form a bank 7 and subsequently adhered to the outer peripheral surface of the roll 2 while rolled between the rolls 1, 2 to be transferred to the first rolling roll 3. The adhesive high viscosity resin 5 peeled off from the first rolling roll 3 by a doctor knife 8 and leveled to be transferred to the outer peripheral surface of the second rolling roll 4 is adhered and laminated to the surface of a base material 6 sent in synchronous relation to the rotational speed of the second rolling roll 4. In this case, a scraping doctor knife 14 is used to scrape off the resin from the second rolling roll 4 to form a thick sheet having a thickness of about 0.2mm or more.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a method and apparatus for manufacturing waterproof sheets, adhesive tapes, hot melt adhesive sheets, and high viscosity resin sheets used for binding using a calendar roll.

[Conventional technology]

When manufacturing waterproof sheets, adhesive tapes, hot melt adhesive sheets, etc., when laminating resin on base materials such as cloth, film, and release sheets, it is necessary to use resins with low viscosity (approximately 10,000 eps or less) or Products with a small lamination thickness (less than 0.2 m-thickness) can be manufactured by laminating the resin on the base material by a coating method using a coating roll or an extrusion lamination method using a T-gui, which is a well-known method. It is. However, the resin is sticky and has a high viscosity (10,000 cps).
or more) or when laminating resin thickly (0.2 sokan thickness or more)
It is practically impossible to use the conventionally known coating method as described above.

[Problems to be solved by the invention]

The present inventors are considering manufacturing a high-viscosity resin sheet by forming a sticky high-viscosity resin into a thick sheet using a calendar roll and laminating it on a base material. As shown in FIG. 5, the bank 7 formed by the upper pair of rolls 1.2 rolls and transfers the adhesive high viscosity resin 5 to the outer circumferential surface of the first rolling roll 3, and further transfers it to the outer peripheral surface of the first rolling roll 3. The sheet-shaped high-viscosity resin 5 is transferred to the outer peripheral surface of the second rolling roll 4 while being rolled, and is laminated on the surface of the base material. With this method, it is possible to roll a high-viscosity resin into a sheet of any desired thickness at high speed and laminate it on a base material, but it has the following problems. That is, the high viscosity resin 5 passes from the bank 7 through the gap between the pair of rolls 1.2 so as to adhere to the outer circumferential surface of one roll 2, and is further transferred from the first rolling roll 3 to the second rolling roll from this roll 2. 4, but at this time, some of the high viscosity resin 5 adheres to the outer periphery of the second rolling roll 4 due to its high viscosity, making it difficult to peel off and laminate onto the base material. I had left it behind. In particular, sticky high-viscosity trees JIIt
5, it was remarkable in the case of thick sheets of 0.2 mm or more. Furthermore, even if it was peeled off and laminated onto a base material, the thickness would be uneven, resulting in holes or tears in the thin pockets.

[Means to solve the problem]

The method for producing a high viscosity resin sheet using a calender roll of the present invention involves transferring the sticky high viscosity resin 5 from the roll 1.2 forming the bank 7 to the outer circumferential surface of the first rolling roll 3, and then performing the first rolling. #X2 rolling roll 4
After transferring to the outer peripheral surface of the scraping doctor knife 14
The method of the present invention is characterized in that the adhesive high viscosity resin 5 in the form of a thick sheet with a thickness of 0.2 mm or more is scraped off from the outer peripheral surface of the second rolling roll 4 and laminated on the base material 6. The apparatus for producing a high viscosity resin sheet comprises a roll 1.2 forming a bank 7, a first rolling roll 3 from which a sticky high viscosity resin 5 is transferred to the outer peripheral surface of the roll 1.2, and a first rolling roll 1.2. The adhesive high viscosity resin 5 is transferred to the outer peripheral surface from the first rolling roll 3, which is disposed opposite to the roll 3 through a small gap 9, and is rolled into a thick sheet of 0.2 am or more. and a scraping doctor knife 14 for scraping the thick sheet-like adhesive high-viscosity resin 5 from the outer peripheral surface of the W&2 rolling roll 4 and laminating it on the base material 6. This configuration solves the above problems.

[Effect]

Even if it is a thick sheet of adhesive and high viscosity resin, it can be scraped off from the second rolling roll 4 and laminated on the base material 6 using the scraping doctor knife 14.

【Example】

This embodiment uses a calendar roll that is classified as an inverted type. Of course, this calender roll is not limited to this type, but a pair of rolls 1.2 are arranged at the top so that a bank 7 is formed above between both four wheels. . A first rolling roll 3 and a second rolling roll 4 are arranged below the roll 2, respectively. Between rolls 1.2 and 2 and the first rolling roll 3
A gap called a nip is formed between the $1 rolling roll 3 and the second rolling roll 4, and a base material 6 is formed between the $1 rolling roll 3 and the second rolling roll 4.
A small gap 9 is formed which is larger than the thickness of the adhesive high viscosity resin 5 laminated on the substrate, that is, 0.2 times or more. The cutting edge of the doctor knife 8 is inserted into the small gap 9. The tip of the blade of the doctor knife 8 is located at the first point as shown in Fig. 2.
It is in contact with the outer circumferential surface of the first rolling roll 3 near the line connecting the rotation centers of the second rolling roll 3.4. This doctor knife 8 is attached to the main body via a rotation shaft 15, and by applying a moment force to rotate it upward (arrow a in FIG. The layer is prevented from separating from the outer peripheral surface of the first rolling a-rule 3. Further, this doctor knife 8 is supported by the first and V second rolling rolls 3.4 in a small gap 9, and the high pressure of the sticky high viscosity resin 5 is transferred from the first rolling roll 3 to the second rolling roll 4. This prevents damage and deformation due to Further, the gap between the lower surface of the cutting edge of the doctor knife 8 and the outer peripheral surface of the second rolling roll 4 at the shortest separation part is set to the same dimension as the desired thickness of the adhesive high-viscosity resin 5 to be laminated on the base material 6. The passing amount is FIIO. As the base material 6, a release sheet such as a polyvinyl chloride, polyester film, cloth, release paper, release film, etc. is used, and this base material 6 is wound into a roll as shown in FIG. , and is fed to the second rolling roll 4 while being unwound by the feed roll 12. By this device, the adhesive viscosity resin 5 is laminated on the surface of the base material 6 to produce adhesive high viscosity resin sheet A), but the viscosity of the adhesive high viscosity resin is 10,000 cps. (
25°C) or higher. If the viscosity is 10,000 cps and it is not grooved, there is no particular need to use the device of the present invention, and the features of the present invention will not be exhibited.The upper limit of the viscosity is not particularly limited, and it is a viscosity that can be calendered. Good to have. Examples of the adhesive high viscosity resin include butyl rubber and e7) melt resin. In order to smoothly transfer the adhesive high viscosity resin 5 from the roll 1.2 to the first rolling roll 3 and then to the WS2 rolling roll 4, the surface rotational speed of the roll is set to 819, for example, the rotational speed of the roll 1. On the other hand, the rotation speed of roll 2 is 1
:1.2, the rotational speed of the first rolling roll 3 with respect to the rotational speed of the roll 2 is i:i. 5, and the si rolling roll 3 and the second rolling roll 4 are set to the same rotational speed. Therefore, in this case,
If the surface rotation speed of roll 1 is 10+/win, roll 2 will have a rotation speed of 12 m/ll1 inch, and the first and second rolling rolls 3.4 will have a rotation speed of 12 and 6 ta/win, respectively. The heating temperature setting for each mouth and hole is to first lower the viscosity of the sticky high viscosity resin 5 to make rolling easier, and when laminating the sticky low viscosity resin 5 on the base material 6. In order to prevent fluidity, it is preferable to gradually lower the temperature. For example, when butyl rubber is used as the adhesive high viscosity resin, the temperature of roll 1 is 80 to 135°C, and the temperature of roll 2 is 60 to 110°C.
The temperature of the first rolling roll 3 is set at 50 to 80°C, and the temperature of the second rolling roll 4 is set to about 20 to 50°C. The adhesive high viscosity resin 5 is kneaded and preheated to the roll 1.
．． The bank 7 is formed by being supplied between the rolls 1 and 2, and then, while being rolled between the rolls 1 and 2, it adheres to the outer peripheral surface of the roll 2 from the roll 1 and is pulled out from the puncture 7, and then from the roll 2 to the first rolling roll. Move to 3. $1 rolling roll 3
The adhesive high viscosity resin 5 that has been transferred to is peeled off from the surface of the first rolling roll 3 by a doctor knife 8 and transferred to the outer circumferential surface of the f52 rolling roll 4. At this time, the scraping action of the doctor knife 8 prevents the adhesive high viscosity resin 5 from adhering to the first rolling roll 3, and the adhesive becomes sticky on the lower surface of the blade edge of the doctor knife 8 (the part indicated by the arrow in FIG. 2). The high viscosity resin 5 is transferred to the second pressing roll 4 while being smoothed by sliding contact, and as a result, craters that occur when the sticky high viscosity resin 5 is peeled off from the @1 rolling roll 3 are smoothed out by the doctor knife 8. The surface of the adhesive high viscosity resin 5 becomes smooth. Further, at this time, the adhesive high viscosity resin 5 has a property of shifting from a roll with a small rotation speed to a roll with a large rotation speed in a pair of rolls, but the second rolling is 1q while the doctor knife 8 is in a stationary state. Since the roll 4 is rotating, the ratio of the rotation speed of the second rolling roll 4 to the doctor knife 8 whose rotation speed is zero is infinite. The surface of the adhesive high-viscosity resin 5 transferred to the second rolling roll 4 in the form of a sheet can be smoothed without much adhesion to the surface. Further, the thickness of the adhesive high-viscosity resin 5 rolled into a sheet is determined by the gap thickness in the dark passage gap 10 between the cutting edge of the doctor knife 8 and the outer peripheral surface of the second rolling roll 4. The dimension of 10 is 0.20 mm or more, for example,
It is set to 0, 5 mm or 1°OIIlm. The feature of the present invention is that the adhesive high viscosity resin is laminated thickly on the base material 6, and if it is thinner than 0°2 ms, the feature of the present invention will not be exhibited. The gap between the roll 4 and the adhesive high viscosity resin 5 is set to the desired thickness to form a sheet, and the thickness of the sheet is determined by the rolling action of the first rolling roll 3 and the second rolling roll 4. Good too. The adhesive high-viscosity resin 5 transferred to the second rolling roll 4 in this manner is adhered to and laminated on the surface of the base material 6 that is fed in synchronization with the rotational speed of the second rolling roll 4. In this case, as shown in FIG. 1, the adhesive high-viscosity resin 5 is scraped off from the outer peripheral surface of the second rolling roll 4 using a scraping doctor knife 14 and laminated onto the surface of the base material 6. As shown in FIG. 4, a release sheet 11 is overlaid on the surface of the adhesive high-viscosity resin 5 laminated on the base material 6 by a presser roll 13 to produce a high-viscosity resin sheet A. High viscosity resin sheet) A is wound up as shown in FIG. According to the present invention, various high-viscosity resin sheets A can be obtained by using various materials as the base material 6, such as waterproof sheets such as roof puncture sheets, adhesive tapes with a very light adhesive layer, and building materials. PJ between concrete in
Concrete till gap materials, sealants, etc. for filling gaps and adhering concrete to each other can be obtained. The adhesive high-viscosity resin 5 may be laminated only on one side of the base material 6, or may be laminated on both sides. And when a release sheet is used as the base material 6, the 11th! After laminating a sheet-like adhesive high-viscosity resin 5 on a base material 6 as shown in FIG. It's hard.

【Effect of the invention】

In the present invention, an adhesive high viscosity resin sheet used as a waterproof sheet, adhesive tape or hot melt adhesive sheet is applied to a base material formed of a film or cloth using a calendar roll. When manufacturing by laminating, use a doctor knife for scraping f! lS2
The adhesive high viscosity resin rolled into a thick sheet with a thickness of 0.2 mm or more from a rolling roll can be scraped off and laminated onto a base material. Even if it is a sheet, it can be leveled with a scraping doctor knife to make the adhesive high viscosity resin sheet uniform in quality and efficiently manufactured.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a partially enlarged view of the same, Fig. 3 is an overall front view of the same, Fig. 4 is a partially enlarged view of the same, and Fig. 5 is a partially enlarged view of the same. is a front view showing a conventional example, where A is a high viscosity resin sheet, 1.2 is a roll, 3 is a first rolling roll, 4 is a second rolling roll, 5 is an adhesive high viscosity resin, and 6 is a base material. , 7 is a puncture, 9 is a small gap, and 14 is a doctor knife for scraping. Agent Patent Attorney Ishi 1) Ai 7 Figure 1 Figure 2 Figure 3 Figure 4

Claims (2)

[Claims] (1) The adhesive high viscosity resin is transferred from the roll forming the bank to the outer peripheral surface of the first rolling roll, and then the adhesive high viscosity resin is transferred to the second rolling roll by passing between the first rolling roll and the second rolling roll. After transferring it to the outer peripheral surface of the second rolling roll, scrape off the adhesive high viscosity resin in the form of a thick sheet with a thickness of 0.2 mm or more from the outer peripheral surface of the second rolling roll using a scraping doctor knife and laminate it on the base material. A method for producing a high viscosity resin sheet using a featured calendar roll. (2) A roll that forms a bank, a first rolling roll from which the adhesive high-viscosity resin is transferred to the outer circumferential surface, and a first rolling roll that is arranged opposite to the first rolling roll with a small gap between the first rolling roll and the outer circumferential surface of the first rolling roll. A second rolling roll onto which the sticky high viscosity resin is transferred and rolling the sticky high viscosity resin into a thick sheet of 0.2 mm or more; A high viscosity resin sheet manufacturing apparatus comprising a scraping doctor knife for scraping high viscosity resin and laminating it on a base material.