JPH0334804A - Prepreg producing equipment - Google Patents

Abstract

PURPOSE:To smoothly peel a cover film from resin coated paper by providing the resin coated paper in an unwinding part while surrounding it by a housing and maintaining the inside of the housing at the temp. suitable to peel the cover film by a cooling means. CONSTITUTION:An unwinder (unwinding part) 2 fitted with the winding roll of resin coated paper A is provided to the upside of the hot plates 7, 8 and constituted of a box-type housing 1. The housing 1 surrounds the whole resin coated paper A and has both a pulling-out port 1a of resin coated paper A and a pulling-out port 1b of a cover film B. The feeding rolls 16, 17 are preferably provided and aid derivation of the resin coated paper A and the cover film B. A cooling means 19 is arranged by which the inside of the housing 1 is regulated to the prescribed temp. Temp. of the cooling means 19 is controlled by a thermostat 18. The inside of the housing 1 is maintained at the temp. suitable to peel the cover film by working of the cooling means 9. Peeling of the cover film is smoothly performed and furthermore moisture condensation is not caused on the surface of the resin coated paper.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a method of forming a fiber-reinforced composite resin layer by sandwiching reinforcing fibers such as carbon fibers between resin-coated papers on which a matrix resin layer is formed, and then forming a prepreg. The present invention relates to a prepreg manufacturing apparatus for manufacturing.

For example, in a prepreg manufacturing apparatus for carbon fiber-reinforced composite resin prepreg using carbon fibers, as shown in FIG.
A' is an unwinder (unwinding section) 2 in the form of a winding roll.
．． 2', and is drawn out from the wire unwinding section 2.2' via a guide roll 3.3'.

Usually, cover film B is placed on the surface of resin-coated paper A, A'.
, B' are attached, and the cover film is peeled off from the surface of the resin-coated paper using a winder (film winding roller) 4.4' during unwinding from the unwinding section 2.2'.

Resin-coated papers A and A' with cover films B and B' peeled off and the matrix resin layer exposed are set rolls 5.5'
The first stage hot plate 7 and press slot part 6.6', and the second stage hot plate 8 and press roll 6.6'. In this process, the carbon fibers C are impregnated with the matrix resin layer of the resin-coated papers A and A' to form a fiber-reinforced composite resin layer.

Next, both resin-coated papers sandwiching the fiber-reinforced composite resin layer are cooled on a cold plate 9, and then only the upper resin-coated paper A is peeled off from the fiber-reinforced composite resin layer by the wind mites 0. When the resin-coated paper A' to which the fiber-reinforced composite resin layer is attached passes between the nip rolls 12 and 12' in the next step, the cover film D supplied from the unwinder 11 is applied to the resin-coated paper A' to which the fiber-reinforced composite resin layer is attached. It is pasted and then wound up in a winder 13 as a prepreg product.

Problems to be Solved by Akira As can be understood from FIG. 1, in the prepreg manufacturing apparatus as described above, an unwinding section equipped with resin-coated papers A and A' on which matrix resin layers are usually formed. 2.2' is often located close to the location of the hot plate 7.8. For this purpose, the unwinding section 2.2' is heated by the heat from the hot plate 7.8, and the resin semi-upper sheets A, A are attached to the unwinding section 2.2' in a relatively short time. ' The temperature of the roll is raised. This is particularly noticeable in the unwinding section 2 located above the pot plays 1 and 7.8.

For this purpose, the matrix resin of resin-coated paper A, A is softened, and using winder 4.4', the cover film B,
When peeling off B', the matrix resin adhered to the cover film, making it difficult to peel off smoothly.

To solve this problem, a method has been proposed in which before peeling off the cover film, a resin-coated paper is brought into contact with the surface of a roll containing a cooling tube, and the matrix resin is cooled before the cover film is peeled off. However, when such a cooling roll is used, dew condensation formed on the surface of the cooling roll may adhere to the 7-trix resin layer, resulting in unfavorable results. Furthermore, during high-speed operation, cooling may be insufficient, which poses a problem in terms of reliability.

In order to solve this problem, a cooling roll is used, and in order to help the cover films B and B' peel off, impact is applied to the cover films by hand, but complete peeling is difficult. There is a problem in terms of work efficiency because it requires manpower. Furthermore, the film may be damaged or it is difficult to expect continuous and uniform peeling.

Therefore, an object of the present invention is to surround a resin-coated paper roll with a housing in order to block the thermal influence on the unwinder (unwinding section) to which the resin-coated paper roll is attached, and to
By maintaining its internal temperature at the required cooling temperature,
An object of the present invention is to provide a prepreg manufacturing apparatus that can smoothly peel a cover film from resin-coated paper.

I'11 To centralize the problem The above object is completely achieved by the prepreg manufacturing apparatus according to the present invention.In summary, the present invention is a method of manufacturing reinforcing fibers using resin-coated paper on which a matrix resin layer is formed. In a prepreg manufacturing apparatus for manufacturing a prepreg by sandwiching the paper to form a fiber-reinforced composite resin layer, the resin-coated paper is surrounded and installed in a housing at an unwinding part, and the inside of the housing is cooled. The prepreg manufacturing apparatus is characterized in that the temperature is maintained at a temperature suitable for peeling off the cover film by a means.

! Azumao Hereinafter, one embodiment (911) of the prepreg manufacturing apparatus of the present invention will be specifically explained with reference to the drawings.

An embodiment of the prepreg manufacturing apparatus according to the present invention is illustrated in FIG. 1, but since the constituent parts shown in the explanation of the conventional example above have the same structure, the explanation thereof will be omitted.
Only the main parts related to the present invention will be described in detail.

Particularly, referring to FIG. 2, the unwinder (unwinding section) 2 to which the roll of resin-coated paper A is attached above the hot plate 7.8 is box-shaped with a rectangular cross section in this embodiment. It consists of a housing l. The housing l substantially surrounds the entire resin-coated paper roll A, and has a resin-coated paper A pullout opening 1a and a cover film B pullout part 11-+. . Preferably, delivery rolls 1G and 17 are provided corresponding to each of the bows [:, 11a and 1b, respectively, to assist in delivering the resin-coated paper A and the cover film I3, respectively. In addition, there is a lid on the ceiling wall that can be opened to take in and out the roll A).
4 are provided.

According to the present invention, a cooling means 19 is further arranged to maintain the inside of the housing 1 at a predetermined temperature, and the temperature of the cooling means 19 is controlled by a thermostat 18. In addition,
As the cooling means 19, for example, a thermocooler SL, -16I?, which uses a cooling element utilizing the Beltier effect, is used.
F (trade name, manufactured by Nippon Blower Co., Ltd.) and the like are suitable.

In this way, the housing 1 is arranged on the unwinding part 2, and
By configuring a so-called cooling box, for example, a resin-coated paper roll A using an epoxy resin as a matrix resin, which is normally stored in a refrigerator before use.
When the coated T-paper roll A is placed in the unwinding section 2, the inside of the housing 1 can be kept at a low temperature for a predetermined period of time, for example, about 3 hours, depending on the temperature of the coated T-paper roll A itself. Furthermore, even if the temperature rises during that time, the inside of the housing 1 is maintained at a temperature suitable for peeling off the cover film by the action of the cooling means 19. According to the experimental results of the present inventors, in the case of a resin-coated paper roll using epoxy resin as the matrix resin, the inside of the housing 1 is at room temperature minus 5 to 1
Preferably it is maintained at 0°C.

As described above, according to the present invention, the cover film can be peeled off smoothly, and no dew is generated on the surface of the resin-coated paper.

In the above embodiment, the housing 1 was provided only for the upper unwinding part 2, and the cooling means 19 was installed, but the housing 1 was similarly installed for the lower unwinding part 2'.
Of course, a cooling box consisting of the cooling means 19 and cooling means 19 may also be provided.

FIG. 3 shows temperature changes in the unwinding portion 2 with and without the housing 1, and also shows temperature changes when the cooling means 19 is activated.

As is clear from this, the thermal insulation provided by the housing 1 and the cooling means provided by the cooling means 19 are effective in maintaining favorable working conditions when peeling the cover film from the resin-coated paper.

4 Momme (As described in detail above, the present invention, when manufacturing prepreg, encloses the unwinding part to which the resin-coated paper roll is attached with a housing, and also provides a cooling means, so that the resin Coating] The temperature of the two sets of rolls can be maintained at a predetermined temperature, and the cover film can be peeled off uniformly and continuously with good workability. Therefore, prepreg can be manufactured efficiently. have

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of an embodiment of a prepreg manufacturing apparatus according to the present invention. FIG. 2 is a longitudinal sectional side view showing essential parts of the present invention. Figure 3 shows the granite of the experimental example. Housing 2', unwinder (unwinding section) 4' double force bar film winding reroll 6' nibless roll 8: hot plate cold plate thermostat cooling means

Claims (1)

[Claims] 1) In a prepreg manufacturing apparatus for manufacturing a prepreg by sandwiching reinforcing fibers between resin-coated paper on which a matrix resin layer is formed to form a fiber-reinforced composite resin layer, the resin-coated paper is placed in an unwinding section. 1. A prepreg manufacturing apparatus, wherein the prepreg manufacturing apparatus is surrounded by a housing, and the inside of the housing is maintained at a temperature suitable for peeling off a cover film by a cooling means.