JPH04214307A - Method of impregnating resin into base material - Google Patents

Abstract

PURPOSE:To sufficiently impregnate resin into a base material in a short period of time by forcibly impregnating resin vernish into the base material. CONSTITUTION:A base material 3 is wrapped round a dip roll 5 disposed within a resin impregnation bath 2 and the base material is forwarded thereby. The base material 3 is dipped into resin vernish 1 within the resin impregnation bath 2 so as to allow the resin vernish 1 to permeate through the base material 3. At this time, the resin can forcibly be impregnated into the base material 3 by absorbing the resin vernish 1 from the absorbing holes 6 of the dip roll 5 into the dip roll 5.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of impregnating a base material with a resin, which is used to manufacture a prepreg by continuously feeding the base material and impregnating the base material with a resin.

0002

[Prior Art] Conventionally, when impregnating a base material with resin, the base material is continuously fed, the base material is immersed in a resin impregnation tank containing resin varnish, and the base material is impregnated with the resin varnish by natural penetration. was.

0003

[Problem to be solved by the invention] However, since the resin varnish is impregnated into the base material by natural penetration, there is a limit to the impregnation in a short time, and there is a problem that sufficient resin impregnation cannot be obtained in the base material. was there. The present invention aims to solve the above-mentioned problems and provides a method for impregnating a base material with a resin by forcibly impregnating the resin varnish with a sufficient amount of resin.

0004

[Means for Solving the Problems] In order to achieve the above object, the method of impregnating a base material with resin of the present invention includes supplying a base material 3 to a resin impregnation tank 2 containing a resin varnish 1, and at the same time supplying the base material 3. In a resin impregnation method for a base material to be dipped in resin varnish 1 in a resin impregnation tank 2, the base material 3 is passed around a dip roll 5 disposed in the resin impregnation tank 2, and the base material 3 is fed.
is immersed in the resin varnish 1, and the resin varnish 1 is sucked through a large number of fine suction holes 6 provided on the surface of the dip roll 5.

[0005]

[Function] When the base material 3 is dipped in the resin varnish 1 by being passed around the dip roll 5 in the resin impregnation tank 2 and the base material 3 is impregnated with resin, the resin varnish 1 is passed through the dip roll. The resin varnish 1 can be forcibly penetrated into the base material 3 by suction, and even if the base material 3 is immersed in the resin varnish 1 for a short time, the base material 3 can be sufficiently impregnated with the resin.

[0006]

[Embodiment] FIG. 1 is a schematic diagram of an embodiment of the present invention.
A resin impregnation tank 2 is filled with a resin varnish 1, and a dip roll 5 is rotatably installed inside the resin varnish 1. As shown in FIG. 2, this dip roll 5 has a large number of fine suction holes 6 perforated on its surface. When a base material 3 such as glass cloth or paper is passed around the dip roll 5 and fed continuously, the resin varnish 1 naturally permeates into the base material 3 and the dip roll moves from the suction hole 6 as shown by the arrow in FIG. 5
The resin varnish 1 is sucked into the base material 3, and the resin varnish 1 is forcibly infiltrated into the base material 3, so that the base material 3 is sufficiently impregnated with the resin.

FIG. 3 shows the specific structure of the dip roll 5 portion. A hollow shaft 7 is provided protruding from both ends of a hollow cylindrical dip roll 5 having a large number of suction holes 6 on its surface, and the shaft 7 of the dip roll 5 is attached to the lower end of a bearing plate 8 disposed on both sides. It is mounted so that it can rotate freely. A suction tube 9 is connected to the shaft 7 of the dip roll 5, and this suction tube 9 is connected to a suction pump 10 so that the resin varnish 1 can be sucked.

FIG. 4 shows the entire system. A suction line 13 is provided between the dip roll 5 of the resin impregnation tank 2 and the control tank 12, and a suction pump 10 is disposed in this suction line 13. Resin impregnation tank 2
A supply pipe line 1 is connected between the bottom of the tank and the control tank 12.
4, and a supply pump 15 is arranged in this supply pipe line 14. Further, a squeeze roll 16 is arranged above the resin impregnation tank 2. The resin varnish 1 sucked from the dip roll 5 is stored in the control tank 12 via the suction line 13, and
The resin varnish 1 stored in the tank 2 is supplied to the bottom of the resin impregnation tank 2 by a supply pump 15. The base material 3 impregnated with resin in the resin impregnation tank 2 is sent to a squeeze roll 16 and adjusted to a constant thickness.

For example, a prepreg was manufactured in the following manner using the equipment configured as described above. Glass cloth 116E type was used as the base material 3, epoxy resin varnish was used as the resin varnish 1, the base material 3 was impregnated with the resin varnish 1 using the above equipment, and after impregnation, it was made to a constant thickness with a squeeze roll 16, and then dried. We conducted this process to produce prepreg with good impregnability. Further, paper is used as the base material 3, phenol resin varnish is used as the resin varnish 1, the base material 3 is impregnated with the resin varnish 1 using the above equipment, and after the impregnation, the thickness is adjusted to a constant thickness using the squeeze roll 16, Drying was performed to produce prepreg with good impregnability.

0010

Effects of the Invention As described above, the present invention involves feeding a base material by passing it around a dip roll placed in a resin impregnating tank, and immersing the base material in a resin varnish. Since the resin varnish is sucked through the fine suction holes, when the resin varnish is infiltrated into the base material, the resin varnish can be forcibly penetrated into the base material by suction to the dip roll, which allows the resin varnish to penetrate into the base material in a short time. It can be sufficiently impregnated with resin.

[Brief explanation of the drawing]

FIG. 1: Schematic cross-sectional view of one embodiment of the present invention

[Figure 2] Perspective view of the dip roll same as above

[Figure 3] Specific perspective view of the dip roll portion same as above

[Figure 4] Explanatory diagram showing the entire system same as above

[Explanation of symbols]

1 Resin varnish 2 Resin impregnation tank 3 Base material 5 Dip roll 6 Suction hole

Claims (1)

[Claims] Claim 1: A method for impregnating a base material with resin, in which the base material is supplied to a resin impregnation tank containing resin varnish, and the base material is immersed in the resin varnish in the resin impregnation tank, comprising: a dip roll disposed in the resin impregnation tank; Resin impregnation of a base material, which is characterized by feeding the base material by passing the base material around, immersing the base material in resin varnish, and sucking the resin varnish through many fine suction holes provided on the surface of the dip roll. Method.