JPH08216152A - Apparatus for impregnating resin into paper base material - Google Patents

Abstract

PURPOSE: To prevent paper powder scraped by means of surfing rolls from adhering on the surfaces of the surfing rolls during manufacturing process of a prepreg. CONSTITUTION: A fluororesin layer 9 is formed for preventing paper powder from adhering on the surfaces of surfing rolls which carry a paper base material so as to extend the paper base material in the base material forwarding direction to make the extension of a resin-impregnated paper base material escape in the width direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for impregnating a paper base with a resin, which prevents the adhesion of paper powder generated during the prepreg manufacturing process.

[0002]

2. Description of the Related Art In a prepreg manufacturing process, for example, a resin impregnating apparatus 1 as shown in FIG. 4 is used as a resin impregnating apparatus for impregnating a paper base material with a phenol resin. In this resin impregnation apparatus 1, the paper base material 2 is impregnated with the phenol resin through the impregnation roll 4 when passing through the impregnation tank 3 to which the phenol resin (not shown) is supplied.

Since the base material 5 impregnated with the phenol resin is in a wet state by being impregnated with the resin, elongation of 1 to 2% occurs in each of the longitudinal and lateral directions. In order to release this elongation, the surf rolls 6, 6, ... Are arranged in the traveling direction of the base material 5 (the direction of the arrow in the figure). The surf rolls 6, 6, ... Are generally made of metal (made of SUS). Further, a groove is provided so that the base material 5 extends in the width direction (lateral direction).

The substrate 5 impregnated with the resin is conveyed through the surf rolls 6, 6, ... While allowing the elongation thereof to escape, and is sent to the next drying treatment step. A flat roll 7 is arranged after the surf roll 6.

[0005]

By the way, when the base material 5 passes through the surf rolls 6, 6, ..., Paper dust is generated due to the edges of the surf rolls 6, 6 ,.

The paper dust scraped off at the edges of the surf rolls 6, 6, ... Adheres to the surface of the surf rolls 6, 6 ,. The function does not work, and the base material 5 is prevented from being sent to the next step in a good state while the expansion in the width direction is released in the traveling direction.

Further, bumps due to paper powder are generated at various places on the surface of the surf rolls 6, 6, ... As a result, wrinkles, uneven feeding, breakage, etc. occur, and the appearance of the paper base prepreg produced is poor. In addition, the operation of manufacturing equipment may be stopped due to paper breakage during the process.

The present invention has been made under such circumstances, and an object thereof is that paper dust of a paper base material scraped off by a surf roll adheres to the surface of the surf roll. An object of the present invention is to provide a resin impregnating device for a paper base material that does not have any material.

[0009]

In order to achieve the above object, the present invention allows the paper base material impregnated with resin to escape in the width direction, so that the paper base material spreads in the base material advancing direction. In the resin impregnation device including the surf roll having the groove as described above, a fluororesin layer for preventing the adhesion of paper powder is formed on the surface of the surf roll.

In this surf roll, a fluororesin tape having a width equal to or smaller than the width of the groove may be wound around the surface groove to form the fluororesin layer.

[0011]

According to the present invention, when the resin-impregnated paper base material passes through the surf rolls, it escapes the expansion in the width direction and paper powder generated by rubbing with the surf rolls is generated by the fluororesin layer. Prevents adhesion to the surface of surf rolls.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a plan view of a surf roll of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and FIG. 3 is a plan view of another surf roll. The basic configuration of the present invention will be described using the resin impregnation apparatus 1 shown in FIG. The prepreg to be produced is a paper base prepreg, and the resin to be impregnated is a phenol resin as an example.

In the resin impregnation apparatus 1 according to the present invention, as described above, the paper base material 2 passes through the impregnation layer 3 to which the phenol resin (not shown) is supplied, and is impregnated with the phenol resin through the impregnation roll 4. To be done.

The resin-impregnated paper base material 5 (hereinafter referred to as the base material 5) immediately after the paper base material 2 is impregnated with the phenol resin is a paper base material which is impregnated with the resin and is in a wet state.
As described above, elongation of 1 to 2% occurs in each of the longitudinal and lateral directions. In order to escape this growth, surf roll 6,
Transported in the traveling direction (direction of the arrow in the figure) via 6, ...
It is sent to the drying process through the flat roll 7 arranged in the latter stage.

As the surf rolls 6, 6, ..., those made of metal (made of SUS) are used, and as shown in FIG.
Grooves 8 on the surface so that the base material 5 spreads in the width direction (lateral direction),
8 are provided. Further, on the surface of the surf rolls 6, 6, ..., A fluororesin layer 9 for preventing adhesion of paper powder is formed (see FIG. 2).

Instead of the fluororesin layer 9, as shown in FIG. 3, the grooves 8, 8, ...
A fluororesin tape 10 having a width equal to or smaller than that of the groove 8 may be wound.

As described above, according to the present invention, since the fluororesin layer 9 for preventing the adhesion of the paper powder or the fluororesin tape 10 is formed in each groove 8 on the surface of the surf roll 6, the surf roll is formed. It is not necessary to form the shape of 6 differently from the conventional one, and when the base material 7 passes through the surf roll 6, the grooves 8, 8, ... It is possible to prevent the adhesion of paper dust generated by the above.

Therefore, the paper powder does not adhere to the surface of the surf roll 6 and gradually accumulate to form bumps at various places, and it is possible to prevent the base material 5 from wrinkling, uneven feeding, and tearing. The rough deterioration of the paper base prepreg is eliminated. Further, it is possible to prevent the operation of the manufacturing equipment from being stopped due to a paper break or the like, and improve the operation rate.

[0019]

As described above, according to the present invention,
The paper powder of the paper base scraped off by the surf roll,
It can be prevented from adhering to the surface of the surf roll.

[Brief description of drawings]

FIG. 1 is a plan view of a surf roll according to the present invention.

FIG. 2 is a cross-sectional view for explaining an AA line portion in FIG.

FIG. 3 is a plan view of another surf roll according to the present invention.

FIG. 4 is a schematic configuration diagram showing a conventional resin impregnation device.

[Explanation of symbols]

 5 Paper base material 6 Surfing roll 9 Fluorine resin layer

Claims (2)

[Claims] 1. A resin impregnating apparatus equipped with a surf roll having grooves so that the paper base material spreads in the direction of travel of the base material in order to release the elongation of the paper base material impregnated with the resin in the width direction, A resin impregnating device for a paper base material, which comprises forming a fluororesin layer for preventing paper dust from adhering to the surface of a surf roll. 2. The paper base material according to claim 1, wherein the surface of the surf roll is wound with a fluororesin tape having a width equal to or smaller than that of the groove to form a fluororesin layer. Resin impregnation equipment.