JPH01232042A - Preparation of laminated sheet - Google Patents

Abstract

PURPOSE:To sufficiently mold a molded product up to the end part thereof, by providing a degassing container in adjacent relation to a specific pressure container and piercing the long laminated molding material held between thin metal plates through the degassing container to introduce the same into the pressure container. CONSTITUTION:A molding material 1 enters between inlet pulleys 2, 2' and issues from the nip of outlet pulleys 3, 3 '. A stainless steel upper plate 9 is stretched across the pulleys 2, 3 in an endless state while a stainless steel lower plate 10 is trained over the pulleys 2', 3' in the same state and both plates 9, 10 are moved by the rotation of the drive pulleys 2', 3'. Therefore, the molding material 1 passes through the degassing container 4 and the pressure container 5 provided between the pulleys 2, 2' and the pulleys 3, 3'. A degassing pipe 7 is arranged so that the leading end thereof is opened from the center part in the degassing container to the front in the advance direction of the molding material and a plurality of suction ports are provided to the pipe 7 toward the rear part from the leading end thereof.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention applies to electricity? 3. This invention relates to a method of degassing treatment performed prior to hot press molding when manufacturing a laminate plate used as an edge material by a roll method.

[Conventional technology]

Conventionally, a laminate is made by heating a base material impregnated with a synthetic resin to bring the polar fat into a bath-melt fluid state, and then bonding the base materials together using a roll method as shown in FIG. 4 or a multi-stage flat press. Fourth
In the roll method shown in the figure, a laminated material covered with Al<i>plastic film is sandwiched between upper and lower stainless steel plates and passed between upper and lower heating pressure rolls 120. However, since the time required to form the laminate is only a few minutes at the shortest, this method is simply a matter of pasting and rolling. Therefore, the molding of the hammered J-plate is carried out exclusively using a multi-stage flat plate press.

In this technical situation, the present inventors have developed the invention of the rabbit (%
Opening 61-179711) A long laminated molded plate called VCL was obtained. The main points will be explained with reference to FIG. The laminated molding material 1 made of stainless steel plate, aluminum foil, and plastic film enters the pressure vessel 50 from the entry side opening s13 and exits from the exit side opening 14 at a constant speed. A liquid medium 15 is illuminated under pressure inside the pressure vessel and heated by upper and lower heating heat exchangers 16. Cooling heat exchangers 17 are provided above and below the inlet and outlet openings for cooling. N-paraffin with a carbon number of 28 to 30 is used as the medium, and the center of the pressure vessel is kept at 170°C, and the opening can be heated to 10 to 20°C by cooling with water, so the paraffin becomes solid and the liquid medium inside Is it to block it?

Therefore, according to this method, if the distance between the openings of the pressure vessel is 5 m and the moving speed of the molding material is 1 m/min, pressurization and heating for 5 minutes is possible, and even longer pressure vessels are possible. It became possible to make shaku-sized laminates.

[Problem to be solved by the invention]

The method of JP-A-61-179711 generally has no problems when molding a laminated molding material heated and pressurized in a pressure medium in a pressure vessel without a solvent and using 3 as a prepreg T-type mold resin. Even the presence of minute voids is a problem in producing high-quality laminates, and the causes of voids are the medium, moisture, and unreacted substances. In the recent batch-type multi-stage press method, a technology is becoming established in which six heating discs are sealed in advance and the pressure is reduced under vacuum, followed by heating and pressure forming.

However, since the method of JP-A-61-179711 is a long open type, it is not possible to apply vacuum fall pressure technology, and there is a problem in that it is difficult to obtain a high quality laminate.

[Means to solve the problem]

In view of the above problems, the present invention has been achieved.

The present invention provides a degassing vessel adjacent to the pressure vessel shown in % Opening and Closing 61-179711, and the long laminated molding material sandwiched between gold PIi4 thin plates first passes through the degassing vessel and then enters the pressure vessel. . The degassing container is provided with both openings through which the laminated molding material sandwiched between the thin metal plates passes, and is heated through the metal thin plates to release excess residue and moisture contained in the laminated molding material. A sealing material is provided on both sides of the bottom-shaped material sandwiched between the metal plates, and a deaeration pipe is opened between the molding material and the sealing material to suck and discharge the released gas and moisture.

A non-inventive embodiment will be explained with reference to FIG. 1.2. The molding material 1 enters between the inlet side goo 172.2' and the exit side goo 1
73. Exit between 3'. A stainless steel upper plate 9 is endlessly applied to the boobies IJ2 and 3, and a stainless steel lower plate is endlessly applied to the boobies IJ2' and 5', and is moved by the rotation of the drive pulley 2z3'. Therefore, the boo 92.2' and the pulley 59
5', the molding material 1 moves while being sandwiched between the upper and lower stainless steel plates.
It passes through the deaeration vessel 4 and pressure vessel 5 provided between '.

Figure 2 shows that the laminated molding material 1 is the upper and lower stainless steel plates 9, 10.
This shows the state when passing through the inside of the deaeration container 4 while being held in place. On both sides of the laminated molding material, a degassing pipe 7 is placed on the inside and a sealing pipe 8 is placed on the outside. The deaeration pipe 7 has an opening at the front end in the direction of movement of the molding material from the center of the deaeration container, and a plurality of suction ports are provided from the end of the pipe toward the living area.

The relationship and overall picture of the conoseal material, the deaeration pipe, and the stainless steel plate will be further explained in detail.

A long sealing blade is fed between the stainless steel plates and inside the laminated molding material that is fed between the upper and lower stainless steel plates of the boot 172.2' in FIG. 1, and is moved together with the stainless steel plates. Since the laminated molding material is continuously fed and the sealing material is continuously fed on both sides thereof, both the laminated molding plate and the sealing material are continuously fed out from the pulleys 3 and 3'.

On the other hand, the deaeration pipe is inserted between the laminated molding material and the sealing materials on both sides from the holes IJ2 and 2', but its tip opening is fixed to the target of the deaeration container.

Connect the other end to the suction pump and secure.

The degassing container 4 is heated to 40S100° C. using steam, electricity, etc., and the molding material passing therethrough is heated through a stainless steel plate and releases excess gas and moisture contained therein. The degassing pipe has the function of suctioning and discharging the released gas and moisture produced inside these seal vanes.

As shown in FIG. 3, the pressure vessel 5 is filled with a liquid pressurizing medium, and the opening is tightly filled while maintaining the vicinity of the opening at a temperature below the solidification temperature of the liquid pressurizing medium. Industrial n-paraffin is used as the pressurizing medium. The molded material sandwiched between the upper and lower stainless steel plates passes through this pressure vessel. The pressurized medium is
As illustrated in the example, the temperature is 170°C and the pressure is 60kg.
/arp, the molding material is heated and pressurized via the stainless steel plates 9 and 10, and the liquid pressurizing medium is sealed by the sealing material 8 and does not come into direct contact with the side surface of the molding material.

It is easier to supply the laminated/formed material 1 if the drive pulley 2' is located 10 to 3 Qcm before the drive pulley 2', and by sealing the seam between the stainless steel plates of the bracket 92 and 2', the pressure reduction effect can be achieved. Same as above, vacuum lamination becomes possible.

The deaeration pipe 7 is made of super-isolated polyethylene and a heat-resistant resin, such as a polyimide thread resin, and has heat resistance and slipperiness against the stainless steel plate to prevent damage. Seal material 8 is fluororubber.

Silicone rubber, nitrile rubber, chloroprene rubber, etc. are excessive.

[Effect]

According to the method of the present invention, sheet-like laminated molding materials can be manufactured continuously. When passing through the degassing container 4, the molded shaver is degassed, and then enters the pressure container 5 where it is heated and pressurized to complete the molding. As a result, a high-quality laminate with fewer voids is obtained. The energy of movement is small because the ram I-shaped plate moves through the liquid pressurized medium.

Example 1 Bripre f (0,
25mm thick, m & 45!11, 135g/rn' kraft paper made of 55 parts of 57g/rn') 8 sheets with a thickness of 1
．． Sandwiched between 2 parts stainless steel plate belt, lol! Jl, 2
．． For the device shown in Figure 5! 1) Put 30% of industrial n-paraffin into a pressure vessel as a pressurizing medium.The temperature of the pressurizing medium is 170℃ at the center, the pressure is 60kg/bar, and the cutting edge is pressurized for 25 minutes. An 8# laminate was obtained as follows. The temperature at the opening of the pressure vessel is maintained at 10 to 20 degrees Cm using water as a refrigerant.

The length of the opening was 50Co+the gap was 5.51II11. The degassing temperature of the degassing container 4 was set to 80° C., and the degassing was discharged using a vacuum pump. In the uninvented device shown in Fig. 1, the length of the pressure vessel is 25 m, and the moving speed is 1 m/mi.
It was set as n.

The laminate obtained by the method of the present invention has a thickness of 1.55fffffl.
So, 150℃, 2II? Stable quality was obtained with no change in shape even after heating for f hours.

Example 2 150g/m' linter paper was pre-filled with peroxide curing agent.
Unsaturated polyester resin for coating (PS- manufactured by Hitachi Chemical)
51) was coated at 160 g/rn' in terms of solid content, 8 sheets of this coated paper were piled up and sandwiched between 1.21 + 1 rl thick stainless plate belts, and heated and pressurized using the device J shown in Fig. 1゜2.3. A hammer J-board was obtained.

The conditions at the opening of the pressure vessel were the same as in Example 1, and the pressurized medium was heated to 140°C and then injected, so that the temperature at the center was 140°C. The pressure was 10 kg/at, and the pressurization time was 5 minutes.

The degassing conditions of the degassing container 4 were 50°C. The length of the pressure vessel was 5 m, and the laminated plate moving speed was 1 m/min. There was no significant change in the appearance of the thus obtained laminate even when it was heated at 130° C. for 2 hours.

〔Effect of the invention〕

The effects of the present invention are listed below.

(1) In order to move the molded product while performing high temperature and high pressure molding, a force greater than the J91m resistance Kn is required, but according to the method of the present invention, the energy required to move the molded product through the liquid is small.

(2) Pressure and temperature act uniformly on the molded product.

13J (jl11 pressure is also applied, so y
! Sufficient molding up to aS is possible, and the plate thickness is uniform and the physical properties are also uniform.

(The 41 device is cheap and has a small installation area.

+51 Pressurization and depressurization are plowing rates.

+67 Pressurizing energy can be reduced.

(7) There are few voids, scratches, etc. in the molded product.

[Brief explanation of the drawing]

FIG. 1 is a detailed explanatory diagram of the present invention, FIG. 2 is a layout diagram of pipes for deaerating the laminated molding material in a degassing container, and FIGS. 3 and 4 are explanatory diagrams of a conventional device. 1... Horizontal no-molding phase family + 2.2'...
・Inlet pulley, 3, 3'... Outlet pulley, 4... Deaeration container, 5... Pressure vessel, 7... Deaeration pipe . 8... Sealing material, 9... Stainless steel top plate, 10... Stainless steel top plate, 12... Pressure heating roll, 16... . . . Population side opening, 14 . . . Outlet side opening, 15 . . . Liquid pressurized medium, 16 . . . Heat exchanger for heating. 17...Heat exchanger for cooling. 18...Pump for pressurization. Figure 2

Claims (1)

[Claims] 1. The laminated molding material sandwiched between thin metal plates moves at a constant speed through a pressure vessel that contains a high-temperature liquid pressurized medium and cools and solidifies the medium at both openings through which the laminated molding material enters and exits. In the production of long laminates, the laminated material sandwiched between thin metal plates passes through a degassing container provided adjacent to the front of the pressure vessel, and then enters the pressure vessel, and the laminated material in the degassing container is The open end of a degassing pipe is inserted and fixed on both sides of the molding material, sealing material is provided on both sides, and the gas released from the laminated molding material by heating the degassing container is sucked by the degassing pipe. A method for manufacturing a laminate, characterized by: