JPH0664816U - Dryer for sheet material with resin varnish impregnation - Google Patents

Abstract

(57) [Summary] [Purpose] When a long sheet-shaped substrate impregnated with a resin varnish is first passed through the drying oven of a vertical dryer, it suppresses dust generation and shakes the sheet-shaped substrate and heat plate. Prevent dirt from getting on. [Structure] An end of a long sheet-shaped substrate 1 impregnated with a resin varnish is wound around and held by a mounting jig 4 in the width direction, and the mounting jig 4 is connected to a wide belt 5 made of fluororesin. Then, by winding the wide belt 5, the sheet-shaped substrate 1 is pulled up. The belt 5 has a thickness of 0.7 mm, and the width of the belt 5 is 1000-
It is 200 mm for 1300 mm.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for drying a long sheet-shaped base material impregnated with a resin varnish, and more particularly to an apparatus for drying a long sheet-shaped base material in an inverted U-shape through a vertical drying oven.

[0002]

[Prior art]

 In the production of a laminated plate, there is a step of producing a prepreg, which is a molding material, by introducing a long sheet-shaped base material impregnated with a resin varnish into a drying oven and continuously drying it. When a vertical drying oven is used as the drying device, the sheet-shaped substrate is continuously transferred in an inverted U-shape inside the drying oven. It is necessary to hold the tip and pass it through the drying furnace to the outlet. In this way, as a means to guide the sheet-shaped substrate from the inlet to the outlet of the drying furnace only at the first stage, chains that drive vertically are arranged on both sides of the drying furnace and the side portion of the sheet-shaped substrate is arranged. Techniques have been proposed for holding and guiding the wire to this chain, and for pulling and guiding the tip of the sheet-shaped substrate with a rope.

[0003]

[Problems to be solved by the device]

 However, the technique of driving the chain has a problem that the dust in the drying process causes the inside of the drying oven and the sheet-shaped substrate to be contaminated, and the technique of pulling with a rope causes the sheet-shaped substrate to sway and come into contact with the hot plate for drying. However, the sheet-like base material was bent or the hot platen was stained. The problem to be solved by the present invention is that when a long sheet-shaped base material impregnated with a resin varnish is first passed through a drying oven of a vertical dryer, dust generation is suppressed to prevent the sheet-shaped base material from shaking or shaking. It is to prevent the hot platen from becoming dirty.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the drying apparatus according to the present invention uses a long sheet-shaped base material impregnated with a resin varnish when the first end of the sheet-shaped base material is passed through a drying oven of a vertical dryer. As a means for pulling, a wide belt made of fluororesin that is wound up in the upper part of the drying furnace is provided.

[0005]

[Action]

 Since the drying device according to the present invention uses a belt made of fluororesin, it has heat resistance and suppresses dust generation. Since the belt is wide, the shaking of the sheet-shaped base material is prevented, and the sheet-shaped base material does not come into contact with the heating platen, so that the heating platen is less contaminated.

[0006]

【Example】

 An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view of a vertical dryer as viewed from the side. The long sheet-shaped base material 1 impregnated with the resin varnish is passed through a hot platen 3 facing each other in the drying oven 2 in an inverted U-shape to be dried. When the sheet-shaped base material 1 is first passed through the drying oven 2, as shown in the enlarged view, the tip of the sheet-shaped base material 1 is wound around the attachment jig 4 across the width direction and held. Then, the mounting jig 4 is connected to the wide belt 5 made of fluororesin. Then, by winding the wide belt 5, the sheet-shaped substrate 1 is pulled up. The belt 5 has a thickness of 0.7 mm, and its width is 200 mm with respect to the width 1000 to 1300 mm of the sheet-shaped substrate. The wide belt 5 is wound up in the upper part of the drying furnace 2, and when the tip of the sheet-shaped substrate 1 reaches the upper part of the drying furnace 2, the wide belt 5 is removed from the mounting jig 4. From here, the sheet-shaped substrate 1 is pulled downward by the weight of the attachment jig 4, and the tip thereof reaches the outlet of the drying furnace. The attachment jig 4 is removed from the front end of the sheet-shaped substrate 1, and then the drying process is continuously performed.

[0007]

[Effect of device]

 In the vertical dryer according to the present invention, when the sheet-shaped substrate impregnated with the resin varnish is first passed through the drying oven, the wide belt made of fluorine resin is used as a means for pulling up the tip of the sheet-shaped substrate. Since it is used, less dust is generated in the drying furnace and the shaking of the sheet-shaped substrate can be prevented, so that the hot platen for drying is also less contaminated.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view of a vertical dryer according to an embodiment of the present invention as seen from a side surface.

[Explanation of symbols]

 1 is a sheet-shaped substrate 2 is a drying oven 3 is a heating plate 4 is a mounting jig 5 is a wide belt

Claims (1)

[Scope of utility model registration request] 1. When a long sheet-shaped base material impregnated with a resin varnish is first passed through a drying furnace of a vertical dryer, it is rolled up at the upper part of the drying furnace as a means for pulling the tip of the sheet-shaped base material. A drying device for a resin-varnish-impregnated sheet-shaped substrate, comprising a wide belt made of fluororesin.