JP2554919B2 - Method of impregnating fiber mat with resin - Google Patents

Description

The present invention relates to a method for impregnating a fiber mat with a resin, and more particularly to a method for continuously impregnating a fiber mat with an uncured resin having a viscous property. .

[Conventional technology]

Conventionally, as a reinforcement of synthetic resin products, it has been widely practiced to impregnate a fiber mat such as a glass fiber nonwoven fabric with a resin and cure the resin mat. However, in this impregnation, there is no problem if the uncured resin has low viscosity. However, in the case of a highly viscous resin, almost uniform impregnation cannot be performed in a non-pressurized state, and some kind of pressurizing means is required.

In view of this point, the applicant of the present application supplies the fiber mat-like sheet B onto the belt conveyor A as shown in FIG. 2, and supplies the resin C having a high viscosity to the resin C as well as the resin C. A viscous property is obtained by blocking with a doctor knife D, disposing a pressure contact roller E in the resin stagnation C ', and reciprocating this roller E in a direction perpendicular to the transfer direction of the conveyor A (arrow X). It was previously proposed to impregnate resin C.

[Problems of conventional technology]

However, in the case of the above means, the bubbles contained in the fiber mat-like sheet B cannot be degassed well, the resin impregnation may be performed with the bubbles still contained, and uniform impregnation may not be achieved. It was.

[Problems to be Solved by the Invention]

In view of the above-mentioned drawbacks, the present invention provides a method for impregnating a fiber mat with a resin having high viscous resin, which allows continuous impregnation without enclosing air bubbles in the fiber mat-like sheet. It was done for the purpose.

[Technology that has solved the problem]

That is, the method for impregnating a fiber mat with a resin of the present invention comprises supplying a viscous resin in a layer form on a belt conveyor, supplying a fiber mat in a layer form on the resin layer, and then from the fiber mat,
It is characterized in that a roll having a large number of circumferential grooves arranged side by side is reciprocated over the entire width in a direction substantially perpendicular to the advancing direction of the fiber mat sheet while applying pressure.

〔Example〕

 Next, the method of the present invention will be described with reference to an embodying apparatus.

 FIG. 1 is a side view of an apparatus for carrying out the method of the present invention.

The method of impregnating a fiber mat with a resin according to the present invention comprises supplying a viscous resin 2 onto a belt conveyor 1 and smoothing the resin mat into a layer having a constant thickness with a doctor knife or the like. A plurality of fiber mats 3 are supplied in layers, and the surface mat 4 is degassed in the circumferential direction by the fiber mat 3.
4B ... A roll 4 in which a large number of 4Bs are arranged side by side is configured to reciprocate over the entire width of the fiber mat 3 in a direction perpendicular to the transport direction (arrow X) of the fiber mat 3 (paper spine direction in the figure) and pressurize. .

As the resin having a viscous property, a resol-based phenol resin or the like is suitable.

[Action]

In the present invention, the pressing force by the roll 4 is applied from above the fiber mat 3, so that the resin 2 ′ is applied to the fiber mat 3
Air permeates from the lower surface to the upper surface, and the air contained therein escapes from the interstices between the fibers to the upper surface and is released into the atmosphere.

Since the roll 4 has the circumferential grooves 4B ... 4B, deaeration can be performed smoothly.

〔effect〕

As described above, the present invention reversely utilizes the viscous properties of the viscous resin and presses the fiber mat from above the resin layer, so degassing can be carried out very smoothly, and air bubbles can be held. It is possible to obtain a uniform resin-impregnated mat that is free from indentation.

[Brief description of drawings]

FIG. 1 is a side view of an apparatus for implementing the present invention, and FIG. 2 is a side view of an apparatus for implementing a conventional method.

Claims (1)

(57) [Claims] 1. A roll in which a viscous resin is supplied in layers on a belt conveyor, a fiber mat is supplied in layers on the resin layer, and a large number of circumferential grooves are juxtaposed on the surface of the fiber mat. 2. A method for impregnating a fiber mat with a resin, comprising reciprocating over the entire width in a direction substantially perpendicular to the direction of travel of the fiber mat sheet and applying pressure.