JPS59154163A - Method and device for laminating high-viscosity resin on base material by using calender roll - Google Patents

Abstract

PURPOSE:To prevent the formation of a crater by inserting the tip of a doctor knife into the gap between the 1st and 2nd rolling rolls so that a high-viscosity resin is forcibly stripped and is transferred to the 2nd rolling roll. CONSTITUTION:While a high-viscosity resin 5 is stripped from outside circumferential surface of the 1st rolling roll 3 with a doctor knife 8, the resin 5 is brought into contact with the knife 8 so that the resin 5 is transferred to the 2nd rolling roll 4. Then the resin of a high viscosity is rolled without forming any crater and is thickly laminated on a base material.

Description

[Detailed Description of the Invention] [Technical Field] The present invention is applicable to the production of waterproof sheets, adhesive cheeses, etc. by laminating a thick layer of high viscosity resin on a base material formed from a film or a thin film, and Using a release sheet as a base material, high viscosity resin 1] Elk is used when laminating a thick layer of Elk and then peeling off the release sheet from the resin to produce hot melt adhesive sheets, etc. High viscosity using a calendar roll The present invention relates to a method and apparatus for laminating resin onto a base material.

[Background technology 1] When laminating a resin on a base material such as cloth, film, or release sheet in manufacturing waterproof sheets, adhesive tapes, hot melt adhesive sheets, etc., the viscosity of the resin is low (approximately 10,000 cps or less). or resin lamination thickness is thin (0
, 2111J+thickness or less), ISt resin can be laminated on the base material by a coating method using a coating method or an extrusion lamination method using a T-tie, which has been frequently used in the past. However, the resin is sticky and has high viscosity (
10,000 Cp8 or more) or when laminating a thick layer of 8+ fat (
It is practically impossible to use the coating method described above for coatings (0°2 layer thickness or more), and the extrusion lamination method using T-ties as described above has a slow extrusion speed, making it difficult to produce. The efficiency is very slow and this is also not practical.

Therefore, the present inventors have studied using a calender roll to form a high viscosity resin into a sheet and to thickly laminate it on a base material. That is, from the JSS shift 7) formed by the upper pair of rolls tll F21 as shown in FIG. 1'' viscosity tree 1 effect (6) is transferred to the outer peripheral surface of the first rolling roll (3) while being rolled, and further from the first rolling roll (3)! ! The highly viscous resin (5) in the form of a sheet is laminated onto the surface of the base material by transferring it to the outer peripheral surface of the two rolling rolls (4) while rolling it. 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 thickly on a base material, but it has the following problems. That is, the high viscosity resin (5) is transferred from the bank (7) to one of the 0-
A pair of rolls are attached to the outer circumferential direction of the film (2).
It passes through the +21 gap and then moves from this roll (2) to the first rolling roll (3) and then passes through the first rolling roll (3).
At this time, the high viscosity resin (5) is transferred from the first and second rolling rolls +31 +41 to the second rolling roll (4).
When the resin passes through the entire time and moves to the second rolling roll (4), some of the resin adheres to the outer circumferential surface of the first rolling roll (3) due to its high viscosity, and the resin passes through the second rolling roll (4). Craters (pocket-like unevenness) are likely to occur on the outer surface of the high-viscosity resin (5) that is transferred to the outer periphery of (4) in a sheet form. In this case, the high viscosity material transferred to the second rolling roll (4) in the form of a sheet is transferred to the fat (6).
Since a part of the resin is taken up on the outer periphery of the first rolling roll (3), the layer thickness (sheet thickness) of the sheet-like high viscosity resin (6) becomes thinner in the crater area, resulting in poor quality. There was a problem in making the material uniform, and there was also a problem in that the thinned portion was perforated or torn.

[Object of the Invention] The present invention has been made in view of the above points, and provides a calendarer 0-0 that can roll high viscosity resin and laminate it thickly on a base material without producing craters. The object of the present invention is to provide a method for laminating a high viscosity resin onto a base material using a laminate and an apparatus therefor.

DISCLOSURE OF THE INVENTION The method for laminating a high viscosity resin onto a base material using a calendar roll according to the present invention is to deposit a high viscosity resin (5) on a substrate rather than an 0-fila (2) forming a bank (7). The high viscosity anti-grease (5) is transferred to the outer peripheral surface of the first rolling mill (3), and then passed between the first rolling mill (3) and the second rolling mill (4). After transferring it to the outer peripheral surface of the second rolling roll (4), in laminating the high viscosity resin 1]1e+51 rolled into a sheet shape on the surface of the base material (6) from the second rolling roll (4). , first rolling 0- with doctor knife (8)
High viscosity while peeling off the high viscosity resin f5+ from the outer circumferential surface of (3)! The present invention is characterized in that the high viscosity resin (6) is completely transferred to the second rolling mill (4) while the M resin (5) is brought into contact with the doctor knife (8). The apparatus for laminating a high viscosity resin onto a base material using such a calender 0-ru is a 0-ru fi+ which forms a bank (7).
121 and a resin with a higher viscosity than this O-fil +21 (
5) is transferred to the outer peripheral surface of the first rolling roller (3), and the first rolling roller (3) is arranged opposite to the first rolling roller (3) through a small gap (9). High viscosity resin (5
) is transferred and rolled into this sheet form, resulting in high viscosity resin (
5) is laminated onto the base material (6), the second rolling mill (4), and the small gap (9) between the first rolling mill (3) and the second rolling mill (4) Inside, the high viscosity resin (6) is placed with its tip facing the outer peripheral surface of the first rolling mill (3), and the high viscosity resin (6) is in full contact with the outer peripheral surface of the second rolling mill (4). A doctor knife (8
), and the present invention achieves the above objects through the action of the doctor knife (8).The present FJA will be described in detail below with reference to examples.

Figure 2 shows an embodiment of the present invention, in which a calendar roller classified as an inverted type, which is used for manufacturing r/'i resin sheets, is used. However, it is of course not limited to this type of calendar roll. In such a calendar,
At the top there is a pair of rolls fil +21 is both rolls fil
The foot is arranged so as to form a bank (7) above between +21 and the first rolling o-nt F below the 0-ru t21.
31 and Ws1 rolling 0-JL, [2nd rolling 0-ru (4) is arranged below 31 (2), respectively. A gap called a chive is formed between the roll fil +21 and between the O-ru (2) and the first rolling O-ru (3),
Furthermore, the first rolling O-Jl (3) and the second rolling O-Jl/
(41 [i, A small gap (9) is formed which is slightly larger than the thickness of the high viscosity resin (5) laminated on the base material (6). The cutting edge of the doctor knife (8) attached to the is inserted into the small gap (9), and the tip of the doctor knife (8) is inserted into the first and second rolling O-ru as shown in Figure 5. (
3) It is brought into contact with the outer peripheral surface of @1 rolling roll (3) near the line connecting the rotation centers of (4). This doctor knife (8) is housed in the main body via a rotating shaft Q5Lt, and is mounted upward (second
The tip of the doctor knife (8) is prevented from separating from the outer circumferential surface of the first rolling mill (3) by applying a rotational force in the direction (arrow a) in the figure. Also doctor knife (8)
The gap between the shortest distance between the lower surface of the cutting edge and the outer peripheral surface of the second rolling o-ru (4) is set to the same dimension as the desired thickness of the high viscosity resin (6) to be laminated on the base material (6). The passage gap (lO) is given as follows. On the other hand, as a base material (6), this base material (6) is rolled into a roll as shown in FIG.
4).

A high viscosity resin is laminated on the surface of the base material (6) using the above-mentioned apparatus, and the high viscosity resin (6) used has a viscosity of 10,000 cpsf (25° C.) or more. If the viscosity is less than 10,000 ape, there is no particular reason to use the apparatus 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 any viscosity that can be used can be used. High viscosity resin (
Examples of those used as 5) include butylcomb and hot melt resin. Also, high viscosity resin (5
) from the first rolling roll (3) from 0−fil +2+,
Next, in order to smoothly transition to the second rolling roll (4), it is necessary to adjust the surface rotation speed ratio of the roll (4), for example, the rotation speed of the roll (1) is The rotation speed of (2) is 1:1.2.0 - the first for the rotation speed of (2)
The rotation speed of the rolling roller is set to 1:1.05, and the first rolling roller (3) and the second rolling roller (4) are set to the same rotation speed. Therefore, in this case, if the surface rotation speed of 0-JL (1) is 1On/min, then O-JL+(21H
12m/min, 1st and 2nd rolling mill (31412
, 6rn/min. Furthermore, the heating temperature setting for each O-ru is such that the viscosity of the high viscosity resin (5) is initially lowered to facilitate rolling, and the high viscosity resin (5) is applied to the base material (6).
) When laminating the layers, it is best to gradually lower the temperature of the 0-ru to prevent fluidity.For example, when using diluted rubber as the high viscosity resin (5),
1) at 80-155℃, roll (2) at 60-11o'
c, first pressure go-ru i31't 50-80°C, second
It is preferable to set the rolling temperature (4) to about 20 to 50°C.

High viscosity resin (5) is cross-wired and 0-100 ml in preheated state.
The high viscosity resin (5) is then rolled between 0 and 121 and is further away from 0 and t21. It is drawn out from the bank (7) while adhering to the outer circumferential surface of the roller, and then moves from the zero roll (2) to the first rolling roll (3).

The high viscosity resin (5) transferred to the first rolling roll (3) in this way is tricked from the surface of the first rolling roll (3) by the doctor knife (8) and transferred to the outer periphery of the second rolling roll (4). However, at this time, the high viscosity resin (
5) can be prevented from adhering, and the high viscosity resin (5) can be transferred to the second rolling roll (4) while being in sliding contact with the lower surface of the cutting edge of the doctor knife (8) (arrow a in Fig. 3). Therefore, the high viscosity resin (5) is transferred to the first rolling roll (3).
) The crater that occurs when the resin peels off from
It is smoothed by 1 in l. And furthermore, at this time,
The high viscosity resin (5) has a property of shifting from a roll with a low rotation speed to a roll with a high rotation speed in a pair of rollers, but while the doctor knife (8) is in a stationary state, the second rolling roll ( 4) is being rotated, so the ratio of the rotational speed of the second rolling roll (4) to the doctor knife j8)K whose rotational speed is O is infinite;
Therefore, the high viscosity resin (5) hardly adheres to the doctor knife (8) and the second rolling roll (
In 4), the surface of the high viscosity resin (5) that is converted into a sheet can be made smooth. In addition, the thickness of the high viscosity resin (6) rolled into a sheet is determined by a doctor knife (8
) is determined by the gap thickness in the passing gap (lO) between the cutting edge part of the second rolling opening and the outer peripheral surface of the second rolling opening (4), and the dimension of this gap is usually 0.2 mm or more (for example, 0.2 mm or more). 5.II
J, 1. oms). The feature of the present invention is that the high viscosity wood (5) can be laminated thickly on the base material (6), and the features of the present invention are not exhibited for apricots thinner than 0.2 thick. In addition, the first rolling #O-ru (3) and the second rolling
-, It, f4) with high viscosity, tree U? 4!
5) is set to the desired thickness for sheeting, so that the thickness of sheeting is determined by the rolling action between the first rolling roll (3) and the second rolling roll (4). It is also possible.

The high viscosity resin (5) transferred to the second rolling pressure IAt: 0-roll (4) as described above is transferred to the base material (6 ), and at this time, as shown in Fig. 2, the second rolling roll (4
) is turned on on the surface of the base material (6) by scraping off the high viscosity resin (5) from the outer peripheral surface of the base material (6). As shown in section 5, a release sheet (Ill) is pressed onto the surface of the high viscosity resin (5) laminated with the base material f6) (13).
1, and in this state, roll it up as shown in Figure Φ t to make a product. It's something you get. Various products can be obtained by using various materials as the base material (6). For example, waterproof sheets such as Roofinji, adhesive cheese 9 with a thick adhesive layer, concrete gap materials for filling the gaps between concrete in buildings and completely adhering the concrete, Sealy J adhesive materials, etc., and high viscosity resin ( 6) may be applied to [ii: E'4] only on one side of the base material (6), or may be laminated on both sides. If a mold release sheet is used as the base material (6), as shown in Figure 2, a sheet-like high viscosity resin (6) is laminated on the base material (6) and then cooled. For example, by peeling the sheet-like high-viscosity resin (5) from the base material (6), hot null 1 to contact sheets can be obtained.

[Effect of 1 shot]] As described above, according to the present invention, since the gripping fat is rolled into a sheet using a calendar roll and this is layered on the base material for 1 hour,
Even if the resin has a high viscosity, it can be applied thickly to the base material, and the first rolling roll and second rolling plate are 0.
- Using a doctor knife with the tip inserted into the small gap between the rolls, the high viscosity resin is forcibly removed from the first rolling roll and transferred to the second rolling roll. Since the high viscosity resin comes into contact with the rollers and acts to level the surface, it is possible to prevent the formation of craters that occur when the high viscosity resin transfers from the first rolling roll to the second rolling roll.

[Brief explanation of drawings]

FIG. 1 is a front view of the conventional example, FIG. 2 is a front view of an embodiment of the present invention, FIG. 5 is an enlarged view of a part of the same, FIG. The figure is an enlarged view of a part of the same as above. fIl, (2) is 0-ru, (3) is the first rolling roll, (
4) is the second rolling roll, (5) is the high viscosity resin, (6) is the base material, (7) is the bank, (8) is the doctor knife, +9
) Iri small gap, (10) is the passing gap. Agent Patent Attorney Ishi 1) Chief 7 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] txt The high viscosity # is transferred to the outer peripheral surface of the first rolling roll from the roll forming the bank, and then the first rolling roll is transferred to the first rolling roll.
The high viscosity resin is passed between the roll and the second rolling roller and transferred to the outer peripheral surface of the second rolling roller, and then the high viscosity resin is rolled into a sheet onto the surface of the base material by the second rolling roller. In laminating the two, the high viscosity resin is peeled off from the outer peripheral surface of the first rolling roll with a doctor knife, and the high viscosity resin is brought into contact with the doctor knife, and the high viscosity resin is transferred to the second rolling roll. Method for laminating high viscosity resin onto a base material using a calendar roll (2)
A roll forming a bank, a first rolling mill from which a high viscosity resin is transferred to the outer circumferential surface of the roll, and a first rolling mill disposed opposite to the first rolling roll with a small gap therebetween.
The high viscosity resin is transferred to the outer peripheral surface from the roll, and the high viscosity resin rolled into a sheet is laminated on the base material.
and the outer periphery of the second rolling roller, which is arranged with its tip facing the outer peripheral surface of the first rolling roller in a small gap between the first rolling roller and the second rolling roller. To the base material of high viscosity resin using curry and J tar D-tar, which is characterized by comprising a doctor knife which forms a passage gap through which the high viscosity ridge fat is allowed to pass through while being in full contact with the surface. layer transfer device.