JPH06278133A - Impregnation with resin - Google Patents

Abstract

PURPOSE:To avoid an unimpregnated part with resin from occurring by a method wherein a base material can be impregnated highly precisely with resin according to its amount to be impregnated with. CONSTITUTION:While a base material 4 which is rotatively turned with a presser roller 10 is being moved between a kiss roll 6 pratially dipped into a resin- impregnating bath 3, and a squeeze roll 11 which is positioned above the kiss roll 6 and paird with the kiss roll 6, the base material 4 is impregnated with resin 1 stuck to the kiss roll 6 from one side surface of the base material 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a resin impregnation method, and more specifically, it is useful for impregnating a paper base material or a glass base material with a resin, and is a metal foil used for a printed wiring board or the like. The present invention relates to a resin impregnation method in a step of continuously producing a laminated laminate.

[0002]

2. Description of the Related Art As shown in FIGS. 2 to 4, an unsaturated polyester resin, an epoxy resin, a polyimide resin, a fluorine resin, a phenol resin, a polyphenylene oxide is used as a base material (4) such as glass cloth, glass non-woven cloth or paper. Three methods are known as resin impregnation methods for impregnating a resin (1) such as a resin.

First, as shown in FIG. 2, one is a squeeze roll (11) in contact with an upper side of the kiss roll (6) partially immersed in the resin impregnation tank (3). ), The resin (1) adhering to the kiss roll (6) is pressed from one side of the base material (4) by a squeeze roll (11) to impregnate it with the base material (4). is there.

Next, as shown in FIG. 3, the second is a kiss roll (6) partially immersed in a resin impregnation tank (3) and an applicator roll contacting the upper side of the kiss roll (6). (11) Further, in order to adjust the amount of the resin (1) attached to the kiss roll (6), the kiss roll is provided by partially immersing it in the resin impregnation tank (3) like the kiss roll (6). A metalling roll (8) in contact with (6) is provided, and the resin (1) attached to the kiss roll (6) is moved while moving between the kiss roll (6) and the squeeze roll (11) to obtain the base material (4). ) Is pressed by a squeeze roll (11) from one side to impregnate it.

Finally, the third is a kiss roll (6) partially immersed in the resin impregnation tank (3), and a holding roll (10) and a backup roll (12) above the kiss roll (6). ) Is provided, and the resin (1) adhered to the kiss roll (6) while moving the base material (4) between the kiss roll (6) and the pressing roll (10) and the backup roll (12) is used as the base material. In this method, the base material (4) is pressed against the kiss roll (6) by the pressing roll (10) and the backup roll (12) from one side of the material (4) to impregnate it.

However, none of these methods can impregnate the base material (4) with the resin accurately according to the amount of impregnation.
The unimpregnated part of the resin (1) remains in the base material (4).

[0007]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and the purpose thereof is to allow a base material to be impregnated with a resin accurately according to the amount of impregnation.
It is an object of the present invention to provide a resin impregnation method that aims to eliminate unimpregnated portions of resin.

[0008]

In the resin impregnation method of the present invention, a kiss roll () is provided by partially immersing a base material (4) which is rotated around a pressing roll (10) in a resin impregnation tank (3). 6) and the resin (1) which is located above the kiss roll (6) and which is attached to the kiss roll (6) while moving between the squeeze roll (11) paired with the kiss roll (6). ) Is impregnated from one side of the base material (4).

[0009]

According to the resin impregnation method of the present invention, the kiss roll (6) and the kiss roll (6) provided by partially immersing the base material (4) which is rotated around the pressing roll (10) in the resin impregnation tank (3). A resin (1) which is positioned above the roll (6) and which is attached to the kiss roll (6) while moving between the squeeze roll (11) paired with the kiss roll (6).
Since the base material (4) is impregnated from one side of the base material (4), the base material (4) is stretched by the pressing roll (10), and particularly when the base material (4) passes between the kiss roll (6) and the squeeze roll (11), Kiss roll (6) and squeeze roll (11)
The contact area between and can be made larger, and the resin (1) can be accurately impregnated in the base material (4) according to the amount of impregnation, and the unimpregnated portion of the resin (1) can be eliminated.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a process drawing showing an embodiment of the resin impregnation method of the present invention. The apparatus according to the resin impregnation method of the present invention includes a resin impregnation tank (3). In order to keep the resin (1) in the resin impregnation tank (3),
Resin (1) is constantly replenished. A kiss roll (6) is partially immersed in the resin impregnation tank (3). A squeeze roll (11) is paired with the kiss roll (6) on the kiss roll (6).

The apparatus according to the resin impregnation method of the present invention further comprises a pressing roll (10). This restraining roll (1
In (0), the base material (4) is rotated to make the contact area between the kiss roll (6) and the squeeze roll (11) larger, so that the resin (1) is contained in the base material (4). It fulfills the function of accurately impregnating according to the amount of impregnation.

The squeeze roll (11), the kiss roll (6) and the restraining roll (10) are made of metal,
A material such as rubber or synthetic resin or a metal roll whose surface is coated with rubber or synthetic resin can be appropriately used.

The apparatus according to the embodiment of the resin impregnation method of the present invention comprises a metering roll (8). This metering roll (8) does not necessarily have to be provided, but when the metering roll (8) is present, the amount of resin attached to the kiss roll (6) provided by partial immersion is adjusted, Therefore, the resin (1) attached to the base material (4) is less likely to have spots. As the metalling roll (8), similar to the squeeze roll (11), the kiss roll (6) and the restraining roll (10), metal, rubber, synthetic resin, or a metal roll surface coated with rubber or synthetic resin A coated material or the like can be appropriately used.

The resin-impregnated base material is obtained by adding the resin (1) to the base material (4).
It is impregnated with and can be subsequently cured to form, for example, an insulating plate or a laminated plate. This base material (4) is in contact with the kiss roll (6) and the kiss roll (6) provided by being impregnated with a solvent that has been degassed under reduced pressure, and then partially immersed in the resin impregnation tank (3). When moved between the squeeze roll (11) and the squeeze roll (11), the kiss roll (6) to which the resin (1) in the resin impregnation tank (3) adheres is impregnated from one side of the base material (4) while rotating. As the substrate (4), inorganic fibers such as glass, polyester, polyacryl, polyvinyl alcohol, polyamide, polyimide, polyphenylene sulfite,
Woven cloth, non-woven cloth, mat or paper made of organic synthetic fibers such as urethane and natural fibers such as cotton, or a base material (4) in which these are combined can be used.

The resin (1) used in the present invention is a resin composition with which the base material (4) is impregnated, such as unsaturated polyester resin, epoxy resin, polyimide resin, fluorine resin, phenol resin, polyphenylene oxide resin and the like. Can be used. For the resin impregnation, it is preferable to perform the primary impregnation with a low-viscosity resin such as a homogenous resin or a heterogeneous resin because more uniform impregnation can be performed. Further, the resin composition with which the base material (4) is impregnated may optionally contain aluminum hydroxide, clay, talc, silica, alumina, magnesium carbonate,
A powder such as calcium carbonate or synthetic resin, or a filler such as a hollow body can be used by adding 1 to 200 parts by weight to 100 parts by weight of the resin. Furthermore, it is desirable that the resin composition is preferably degassed under reduced pressure before use in order to suppress the generation of bubbles in the resin-impregnated base material (4).

[0017]

According to the resin impregnating method of the present invention, the resin can be accurately impregnated into the base material according to the amount of impregnation, and the unimpregnated portion of the resin can be eliminated.

[Brief description of drawings]

FIG. 1 is a process drawing showing an embodiment of a resin impregnation method of the present invention.

FIG. 2 is a process diagram of a conventional resin impregnation method.

FIG. 3 is a process diagram of another conventional resin impregnation method.

FIG. 4 is a process diagram according to still another conventional resin impregnation method.

[Explanation of symbols]

 1 Resin 3 Resin Impregnation Tank 4 Base Material 6 Kiss Roll 8 Metering Roll 10 Holding Roll 11 Squeeze Roll 12 Backup Roll

Claims (1)

[Claims] 1. A kiss roll (6) provided by partially immersing a base material (4) which has been rotated around a restraining roll (10) in a resin impregnation tank (3), and a kiss roll (6) above the kiss roll (6). The resin (1) adhering to the kiss roll (6) is impregnated from one side of the base material (4) while moving between the squeeze roll (11) that is positioned and is paired with the kiss roll (6). A resin impregnation method comprising: