JP2514541Y2 - Prepreg end face heat treatment equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a prepreg end face heat treatment apparatus which prevents foreign matter from being generated from a prepreg cut into a predetermined size in the production of a metal foil-clad laminate used for a printed wiring board.

[0002]

2. Description of the Related Art A woven glass fabric or a non-woven glass fabric is used as a base material for the production of a metal foil-clad laminate. This is impregnated with a thermosetting resin such as an epoxy resin, dried, and prepregs cut into a predetermined size are stacked to have a predetermined thickness,
A metal foil is placed on the surface and heated and pressed. When used as a printed wiring board, it is necessary to minimize dents on the metal foil surface. This is because when a metal foil is etched to form a circuit conductor, if there is a dent in that portion, the circuit conductor may be cut.
Since fine foreign matter that causes dents is generated from the prepreg, brushing or suctioning the prepreg surface to remove foreign matter during stacking, and removing foreign matter on the metal foil surface when placing the metal foil or during subsequent work Is prevented from adhering.

However, most of the foreign matter is generated from the cut prepreg end surface. From the end surface of the prepreg, the fibers and resin powder of the base material are likely to fall off, and these adhere to the surface of the metal foil during the work of laminating the prepreg and the metal foil. In order to prevent the fibers and resin powder of the base material from falling from the end surface of the prepreg, heat the cut end surface of the prepreg to melt the resin in the prepreg and then fix the fibers and resin powder on the end surface with the solidified resin. do it.

[0004]

It is very troublesome to manually contact the prepreg end surface with the hot platen and fix the prepreg end surface with the molten resin as described above. The problem to be solved by the present invention is to enable the heat treatment to be carried out efficiently and uniformly when the cut end surface of a prepreg cut into a predetermined size is heat treated to prevent the fibers and resin powder from falling off.

[0005]

In order to solve the above problems, a prepreg end surface heat treatment apparatus according to the present invention comprises an inclined table 2 on which a prepreg 1 cut into a predetermined size is placed, and an upper side and a lower side of the table 2. Located on Table 2
Hot platen 3, 3'that comes into contact with the end surface of the prepreg 1 placed on
And a partition member 4 that supports the lower side of the prepreg 1 placed on the table 2. The hot platen 3 located on the upper side of the table 2 moves in the vertical direction along the inclined surface of the table 2. In addition, the partition member 4
Is in a state of supporting the lower side of the prepreg 1 placed on the table 2 above the heating platen 3 ′ positioned on the lower side of the table 2 and in a state of being separated from the table 2.
The apparatus preferably includes means for vibrating the table 2 in the vertical direction along the table surface.

[0006]

When the cut end surface of the prepreg is heat-treated by the apparatus according to the present invention, a plurality of prepregs 1 cut to a predetermined size are stacked and placed on the table 2. The prepreg 1 slides down the slope of the table 2 and its lower side hits the partition member 4 and is aligned. Then, the heating platen 3 descends along the table surface so as to come into contact with the upper side of the prepreg 1. on the other hand,
The partition member 4 supporting the lower side of the prepreg 1 moves and separates from the table 2. As a result, the prepreg 1 further slides on the table surface, and the lower side of the prepreg 1 contacts the hot platen 3 ′. The upper and lower sides of the prepreg 1 are kept in contact with the heating plates 3 and 3'for a while, and the cut end surfaces of the upper and lower sides of the prepreg 1 are heat-treated. Then, the heating platen 3 is raised along the table surface, and the heat-treated prepreg is taken out.
When the partition member 4 supports the lower side of the prepreg 1 and aligns the lower side of the prepreg 1, if the table 2 is vertically vibrated along the table surface, the aligning operation can be performed quickly.

[0007]

EXAMPLES Examples according to the present invention will be described. Table 2
The inclination angle θ was set to 25 to 30 °. A glass woven base material impregnated with epoxy resin, dried, and cut into 500 mm square pieces 15 to 20 sheets of prepreg 1 stacked and tilted Table 2
Then, the surface of the table was slid downward, and the lower side of the prepreg 1 was brought into contact with the plate-shaped partition member 4 for alignment. Then, a heating platen 3 of 160 ± 5 ° C. covered with an acetate film was lowered along the table surface so as to come into contact with the upper side of the prepreg 1. On the other hand, the partition member 4 supporting the lower side of the prepreg 1 is moved upward at a right angle to the inclined table surface to cover the prepreg 1 with an acetate film 160.
It was slid on the table surface until the lower side came into contact with the heating plate 3'of ± 5 ° C. When the prepreg 1 does not slide due to gravity, the hot platen 3 may push the upper side of the prepreg 1 to slide it. Put the upper and lower sides of prepreg 1 on the heating plates 3 and 3'for 20 to 30
Second, the resin in the prepreg abuted to the extent that the thread was pulled a little. Then, the heating platen 3 was raised along the table surface and the heat-treated prepreg 1 was taken out.

In the above embodiment, means for vibrating the table 2 in the vertical direction along the inclined table surface is provided, and the table 2 is vibrated when the lower side of the prepreg 1 is applied to the plate-shaped partition member 4 and aligned. And, the alignment work can be performed more quickly. Further, in the above embodiment, the partition member 4 is moved upward at a right angle to the table surface, but it may be moved laterally along the table surface. Moving in the lateral direction is convenient because it becomes easier to hold the entire stacked prepreg at the same position until the partition member 4 is completely moved.

[0009]

As described above, in the apparatus according to the present invention, since a plurality of prepregs are aligned on the inclined table,
The prepreg can slide on the table surface to efficiently perform the alignment work. The lower side of the prepreg is supported by a partition member during the alignment work, and the entire prepreg contacts the hot plate at the end of the alignment work. You can When performing direct alignment work on the hot platen,
During the work, there are prepregs that are in contact with the hot platen and prepregs that are not, and it is not possible to expect uniform heat treatment. By vibrating the table when aligning the prepregs, the aligning operation can be performed more quickly.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of an apparatus according to the present invention.

[Explanation of symbols]

 1 is a prepreg 2 is a table 3, 3'is a hot platen 4 is a partition member

Claims (2)

(57) [Scope of utility model registration request] 1. A tilted table for mounting a prepreg cut into a predetermined size, a heating plate positioned on the upper and lower sides of the table and abutting on the end surfaces of the prepreg mounted on the table, and a lower side of the prepreg mounted on the table. The hot platen located on the upper side is configured to move in the vertical direction along the inclined table surface, and the partition member is located above the hot plate located on the lower side of the table. A heat treatment apparatus for prepreg end faces, characterized in that it is in a state of supporting the lower side of the prepreg 1 placed on 2 and a state of being separated from the table 2. 2. The prepreg end surface heat treatment apparatus according to claim 1, further comprising means for vibrating the tilted table vertically along the table surface.