CN1163193A - Method for producing veneer sheet and device for producing said veneer sheet - Google Patents
Method for producing veneer sheet and device for producing said veneer sheet Download PDFInfo
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- CN1163193A CN1163193A CN 97102294 CN97102294A CN1163193A CN 1163193 A CN1163193 A CN 1163193A CN 97102294 CN97102294 CN 97102294 CN 97102294 A CN97102294 A CN 97102294A CN 1163193 A CN1163193 A CN 1163193A
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Abstract
A method for manufacturing a laminate includes steps of forming a laminated combination of synthetic resin sheet material with a metal foil laminated each other, thermoforming under a pressure the laminated combination while supplying an electric current to the metal foil, and, after termination of the current supply, cooling thus obtained laminate while further applying a pressure, whereby the laminated combination can be uniformly heated into its core part to allow the laminate of uniform quality to be obtained, while shortening manufacturing time and minimizing surface roughness.
Description
The present invention relates to a kind of device of making the method for laminate and making this laminate, relate in particular to a kind of method of making laminate, it builds up sheet shape synthetic resin material and metal forming one folded, when providing an electric current, under a pressure, this folded overall thermal is shaped as laminate thus to metal forming, and the device of realizing this manufacture method.
The laminate that has metal forming in its surface is by obtaining sheet shape resin material and the whole stacked mold pressing of metal forming.Copper Foil or similar material as metal forming, usually are used in prepreg on the printed circuit board (PCB) etc. as the laminate of sheet shape resin material.This laminate is to obtain like this, only stacked metal forming and prepreg, or between inserts inner plating, perhaps has the inside and outside laminate that combines with metal forming and prepreg, they are heated under a pressure, make the melting synthetic resin of prepreg, and carry out mold pressing by thermmohardening or cooling.Heating can perhaps realize by vacuum pressed by so that hot pressing or the electrical heating as thermal source realizes such as steam under pressure.
Hot pressing be by heating increased pressure board from upper and lower surface to stacked prepreg or similarly sheet pressurize, and vacuum pressed is with filler plate cover layer lamination hermetically, makes its inner vacuum, and under high pressure adds what hot gas carried out around it.When carrying out stacked mold pressing by this hot pressing or vacuum pressed, usually one group of such plate of the multi-disc prepreg that forms a laminate is made a stacked combination, the such stacked combination of many groups and each intermediate layer that is inserted between the adjacent stacked combination are overlapped into stacked, by this stacked is heated and pressurize, can obtain a plurality of laminates simultaneously.The intermediate layer is used to guarantee the level and smooth of each product, usually with corrosion resistant plate or similar plate.
As mentioned above, when stacked being combined under the pressure when heating by hot pressing that builds up multilayer, the increased pressure board of mold pressing all heats stacked upper and lower surface.Thereby owing to transmit and thermal-radiating delay from stacked side heat, it is poor to produce a heating-up temperature between the stacked combination of stacked combination on the increased pressure board and mid portion.This incomparable inconsistent heating-up temperature is disadvantageous, because it has caused the instability of obtainable laminate product quality.Yet, in hot pressing, treat that superimposed stacked number of combinations is limited.
On the other hand, in vacuum pressed, heating around stacked, though the temperature of each stacked combination is evenly to rise basically, but because the delay that heat is transmitted still produces temperature difference at peripheral edge portion and core body part.Therefore, it is unsettled large-area laminate being carried out mold pressing.
One of method of these shortcomings above eliminating is, for example, BP No.1,321,305, it has disclosed a kind of method, according to this method, can and be inserted in synthetic resin sheet between the metallic plate respectively stacked combination and be overlapped into multistagely, and electric energy is offered metallic plate come to they heating, simultaneously a large amount of laminates is carried out mold pressing.For this heating means, the heating-up temperature of superimposed direction and laminate in-plane all becomes consistent, the mass change minimum.In the open No.62-58903 of Japan Patent, disclosed a kind of method, in the method, the stacking material of metal forming and thermoplastic resin sheet is provided on the metallic roll by feeding roller, electric current by presenting to metal forming, to carry out caking with direct metal forming as heating unit as the metallic roll of electrode.According to this method, heating-up temperature is consistent on the in-plane of laminate, the interplanar mass change minimum of laminate.
Yet there is a shortcoming in above-mentioned method, promptly needs cooling to carry out with the atural beat radiation, and does not apply any pressure.For this shortcoming, be described in detail below with reference to such a case, promptly copper-clad laminate is carried out mold pressing as the combination layer pressing plate of prepreg and Copper Foil, prepreg is a kind of glass cloth that soaks into epoxy resin.
Promptly, when making this laminate, epoxy resin shows significant shrinkage, until epoxy resin during cooling arrives the vitrescence transition temperature, so, when not having pressure, the Weaving pattern of glass cloth, especially the cross-section part of each yarn of glass fiber bundle can pierce through Copper Foil, the surface roughness variation of copper clad laminate.When laminate passes through atural beat radiation cooling under the zero pressure state, measure demonstration with following-up type surface roughness meter surface roughness to yarn on diagonal, maximum surface roughness is 4 to 7 μ m, the level of 1 μ m during significantly greater than cooling under pressure.Therefore, such problem is arranged, promptly the laminate that so obtains is unsuitable for forming intensive circuitous pattern by etching or similar circuit formation method, so that laminate is processed into printed wiring board.It also has another problem, has promptly caused the manufacturing time prolongation by thermal-radiating naturally cooling.
The object of the present invention is to provide a kind of device of making the method for laminate and realizing this method, it can overcome above-mentioned shortcoming, by equably to stacked combined heated until core, obtain the laminate of uniform quality, shortened manufacturing time simultaneously, and made the surface roughness minimum.
Especially, the device that the invention provides a kind of laminate manufacture method and realize this method, when laminate was applied to printed circuit board (PCB), it can easily form fine and closely woven circuitous pattern.
The present invention further provides the laminate manufacture method and be used for the device of this method, when making a large amount of laminate at the same time, it can make the mass change minimum that builds up between each multistage laminate.
According to the present invention, above-mentioned purpose can realize by such laminate manufacture method, this laminate manufacture method comprises the following step: be built up stacked combination each other with sheet shape synthetic resin material and metal forming, under pressure, make this combined hot forming become laminate, simultaneously electric current is offered metal forming in this combination, it is characterized in that, after ending to provide electric current, cool off this laminate, and further it is exerted pressure
According to this laminate manufacture method of the present invention, metal forming is as resistor, and it can produce heat, and stacked combination is heated thus.And, by during cooling exerting pressure, when making laminate, keep the rugosity on surface, shorten the required time of cooling.
Other purpose of the present invention and advantage will become obvious with reference in the most preferred embodiment detailed description of the present invention shown in the drawings.
Fig. 1 shows laminate manufacturing installation according to first embodiment of the invention with side view;
Fig. 2 is the side view that is used for key-drawing 1 laminate manufacturing installation cooling device;
Fig. 3 A is the explanation view of cooling device in the laminate manufacturing installation of second embodiment of the invention;
Fig. 3 B is the perspective view of chill roll used in Fig. 3 A device;
Fig. 4 is the side view of the laminate manufacturing installation of third embodiment of the invention;
Fig. 5 A and 5B are the perspective views of cooling tube in Fig. 4 device, show the different modes of cooling down operation;
Fig. 6 is the side view of the laminate manufacturing installation of fourth embodiment of the invention;
Fig. 7 is the profile of the state of cooling of the laminate manufacturing installation of fifth embodiment of the invention;
Fig. 8 is the perspective view in intermediate layer used in the laminate manufacturing installation of sixth embodiment of the invention;
Fig. 9 A and 9B schematically show the perspective view of the different states of cooling in intermediate layer used in the device of seventh embodiment of the invention;
Figure 10 is the side view of the laminate manufacturing installation of eighth embodiment of the invention;
Figure 11 is the side view of the laminate manufacturing installation of ninth embodiment of the invention;
Figure 12 A and 12B and Figure 13 A and 13B are respectively the views that schematically illustrates of Figure 11 device different aspect;
Figure 14 A and 14B are the perspective views in intermediate layer used in the tenth embodiment of the invention;
Figure 15 is the perspective view with the intermediate layer of the intermediate layer different modes of Figure 14;
Figure 16 is the perspective view with the intermediate layer of the intermediate layer different modes of Figure 14;
Figure 17 A is the perspective view with the intermediate layer of the intermediate layer different modes of Figure 15;
Figure 17 B shows the state in the intermediate layer of using Figure 17 A with side view;
Figure 18 A to 18D is the explanation view of the various different examples of the temperature of measurement sheet shape synthetic resin material when cooling off with the intermediate layer of Figure 15;
Figure 19 A is the illustrative perspective view of the intermediate layer state of cooling of presentation graphs 15A;
Figure 19 B is the profile in the intermediate layer shown in Figure 19 A;
Figure 19 C is a stacked side view in Figure 18 A example;
Figure 20 A is the explanatory of the different states of cooling in intermediate layer of Figure 15;
Figure 20 B is the profile in the intermediate layer of Figure 20 A;
Figure 20 C to 20E is the stacked side view of Figure 15;
Figure 21 A is stacked and is used to explain the side view on the other hand that the intermediate layer of Figure 15 is used to cool off with related cooling device and other;
Figure 21 B to 21D is the side view of different with the cooling device of Figure 21 A respectively cooling device.
Though describe the present invention, should be appreciated that the present invention these embodiment shown in being not limited in, but comprise all distortion, change and the device of equivalence that may be within the scope of the appended claims now with reference to each embodiment shown in the drawings.
Fig. 1 and 2 shows the first embodiment of the present invention, and in this embodiment, the laminate manufacturing installation is configured to a moulding press 4 and electric heater unit 5 is combined.The stacked sub-assembly 3 that moulding press 4 is built up by synthetic resin sheet 1 and metal forming 2 each other in order to mold pressing under pressure.Simultaneously, electric heater unit 5 provides electric current with the generation heat to metal forming 2, thereby resin sheet 1 is heated, and under pressure stacked sub-assembly 3 is carried out hot forming, to form laminate.
For metal forming 2, use one to have the metal forming of continuous length, electric current flows to the other end from an end of the metal forming 2 of continuous length.For resin sheet 1, handle a large amount of resin sheets simultaneously with following mode.
That is, resin sheet 1 is placed on the metal forming 2, makes it the end near paper tinsel 2, folding to twist on this sheet on the resin sheet 1, metal forming 2 is arranged on the both sides of resin sheet 1, thereby forms stacked sub-assembly 3 then.Then, electric insulation and ganoid intermediate layer 6 are placed on the end face of the metal forming 2 that forms stacked sub-assembly 3, again paper tinsel 2 is folded on the intermediate layer 6 with opposite direction, to twist on this intermediate layer, repeat these placements and folding step so in an identical manner, with alternately stacked resin sheet 1 and intermediate layer 6 and the metal forming 2 that is inserted between them, thereby form stacked 9 with a plurality of stacked sub-assemblies 3, stacked sub-assembly 3 comprises intermediate layer 6, and intermediate layer 6 is inserted in respectively and is overlapped between the multistage adjacent set component.
Though in an illustrated embodiment, though used the continuous metal forming of length 2, also can every metal forming of two metal formings 2 be arranged on each side of stacked sub-assembly 3 both sides with two metal formings of separating 2.
, make stacked 9 to be under pressure herein, be clamped between the increased pressure board up and down 7 of a part that forms moulding press 4, contact with the bottom, make three laminates in the embodiment shown simultaneously with stacked 9 top.Increase superimposed quantity, might make a large amount of laminates simultaneously.
The direction that moulding press 4 is exerted pressure can change horizontal direction into from this vertical direction shown in the figure.And shown in the dotted line among Fig. 1, moulding press 4 can make the vacuum press into, and in this press, rolled-up stock is encapsulated in the vacuum chamber 23.
And, as shown in Figure 2, cooling device in the laminate manufacturing installation of present embodiment comprises relative several to coldplate 20, be inserted with cooling water pipe or analog in it with coldplate itself, each forms moulding press 8 to coldplate 20, three groups of such coolings and moulding press 8 is set so that make three laminates when cooling off simultaneously simultaneously.Therefore, during central outage heating of metal paper tinsel 2, take out the aforementioned stacked sub-assembly 3 that forms laminate by heating and mold pressing respectively, and by cooling off and moulding press 8 further pressurizes when cooling off simultaneously.
More specifically for each used material, sheet shape synthetic resin material 1 comprises the glass cloth substrate of one group of interior laminate layer, and it has soaked into epoxy resin, the circuit that has interior laminate layer on its two sides, also comprise the glass cloth prepreg, soaked into epoxy resin, be arranged on the two sides of substrate.For metal forming 2, be the Copper Foil of 18 μ m with thickness.These assemblies have been arranged, can make laminate to the multilayer circuit board of four-layer structure.For intermediate layer 6, can use the smooth metallic plate of surfacing.
And metal forming 2 is single continuous Copper Foils, and it uses with the shape of bending, and each folding edge 2a is arranged alternately on the opposite side of each stacked sub-assembly 3.Vacuum laminated machine is used as moulding press 4, in this vacuum laminated machine, the vacuum of 10 torrs is pumped in the inside of vacuum chamber 23, after this pressurize, the pressure of 10kgf/cm2 is added to stacked 9 end face and bottom surface, and, heats simultaneously by direct current is offered on the continuous Copper Foil that its two ends are connected to power supply from electric heater unit 5, so that this Copper Foil plays the effect of resistance, thereby produce heat.The temperature of the stacked sub-assembly 3 that is heating with thermocouple measurement is carried out heat pressurization in 100 minutes, makes current value arrive 180 ℃ through FEEDBACK CONTROL simultaneously.
As taking apart, separate so heating each laminate that obtains with pressurization, make them be cooled to be lower than below the vitrescence transition temperature of the resin that constitutes laminate, apply 10kgf/cm by cooling and moulding press 8 equally simultaneously
2Pressure.
Obtain under the situation of laminate in the cooling of not exerting pressure by the atural beat radiation, surface roughness is 3 to 7 μ m to the maximum, and as the above embodiment of the present invention, be cooled to be lower than the laminate that obtains below the vitrescence transition temperature of resin under exerting pressure, its surface roughness is little extremely less than about 1 μ m.And, in the increased pressure board 7 of moulding press 4, come under the condition of cooling layer pressing plate by the atural beat radiation under the residual compression of pressurization, be lower than the vitrescence transition temperature to the temperature of laminate and will spend 30 minutes approximately, and in above-mentioned cooling and moulding press 8 under the condition of cooling layer pressing plate, the required time is about 30 seconds below being cooled to be lower than the vitrescence transition temperature, so manufacturing time has shortened effectively.
Can also cool off like this for stacked 9, be embedded in cooling tube, make circulate coolant, end to provide water or air by the cooling tube in the increased pressure board 7 after the electrical heating such as water or air at the increased pressure board 7 of moulding press shown in Figure 14.In this case, the utilization rate of moulding press 4 is higher, and this is the laminate that does not need heat of dissociation because same moulding press can also be used to cool off, and can make surface roughness less than 1 μ m equally, shorten manufacturing time, temperature is dropped to be lower than the needed time of vitrescence transition temperature to be about 40 seconds.
And, this under pressure, cool off to make up with cooling and moulding press 8 with cooling device among another embodiment that below will describe set up.
In Fig. 3 A and 3B, illustrate used cooling device in the laminate manufacturing installation of second embodiment, in this device, replaced the cooling and the moulding press 8 of formation cooling device among the embodiment in the above with chill roll 21.That is, this cooling device comprises three pairs of chill rolls 21, respectively with upper and lower relation toward each other, discharges the laminate that obtains as taking apart from moulding press 4, and order is by three pairs of chill rolls 21, simultaneously at 10kgf/cm
2Pressure and suitable feed rate under pressurize, below the vitrescence transition temperature that laminate is cooled to used epoxy resin.Shown in Fig. 3 B, form the chill roll in this cooling device respectively, make such as refrigerant such as water or air by its inside.
This cooling device with present embodiment cools off under pressure, the performance rugosity of laminate that can make acquisition is less than 1 μ m, each laminate is finished according to the order of sequence by the required work of chill roll 21 is easier, the required time of vitrescence transition temperature that makes temperature be reduced to resin can shorten, and can more effectively shorten manufacturing time.
In Figure 4 and 5, show the laminate manufacturing installation of third embodiment of the invention, in this device, replaced the cooling device that uses among first embodiment with cooling tube 22, cooling tube 22 is arranged to around the lamination plate 9 in the moulding press 4, use such as circulate coolant such as water or air and pass through cooling tube 22, the laminate that heating and pressurization mold pressing are obtained is cooled to be lower than below the vitrescence transition temperature of epoxy resin.That is, this device is configured to have when stopping to heat back maintenance pressurized state, obtains the laminate that is obtained by cooling tube 22 coolings.In Fig. 5 A, show the cooling of water circulation, and Fig. 5 B shows the state of cooling of air circulation, at latter event, cooling tube 22 is provided with in position, and it blows out end and opens to lamination plate 9, can more effectively carry out cooling down operation by cold air being blowed to lamination plate 9.
Under pressure, carry out this cooling by above-mentioned with what the cooling devices in the moulding press 4 provided, can make the laminate surface rugosity minimum of acquisition, less than 1 μ m.
And, under the situation that lamination plate 9 cools off by the atural beat radiation in the moulding press 4 that keep-ups pressure, the laminate temperature is reduced to the vitrescence transition temperature that is lower than resin will spend about 30 minutes, and with above-mentioned cooling off around cooling tube 22, temperature being reduced to be lower than the vitrescence transition temperature only needs about 2 minutes, has shortened manufacturing time effectively.
And, be provided with cooling device around the laminate and can cool off simultaneously and build up multistage laminate, can also increase output.
In another laminate manufacturing installation of the 4th embodiment shown in Figure 6, moulding press 4 is suitable for the vacuum laminated pressurization shown in first embodiment.In this case, after stopping heating, enter the vacuum chamber 23 that constitutes vacuum laminated pressurization by cooler 24, to be cooled to be lower than the vitrescence transition temperature of the epoxy resin that constitutes laminate such as the cooling agent of air, nitrogen, ammonia or analog.
This laminate manufacturing installation cools off by exerting pressure, and can make the surface roughness minimum of the laminate of acquisition, less than 1 μ m.Temperature is reduced to be lower than the required time of vitrescence transition temperature of resin to be about 2 minutes, thereby can shortens manufacturing time.Cooling device is set around the laminate can cools off simultaneously and build up multistage laminate, can increase output.
In the 5th embodiment shown in Figure 7, moulding press 4 hot formed stacked 9 separation fully under pressure by first embodiment, and be placed in the press fixture 25, on the whole up and down stacked 9 compression, and the piece of so placing 9 is immersed in the coolant bath such as water or alcohol etc., cooling agent is full of container 26, piece 9 is cooled to be lower than the vitrescence transition temperature of epoxy resin.Press fixture 25 comprises increased pressure board 25a and constrictor 25b, connects increased pressure board with relativeness, and stacked 9 is clamped in up and down between the increased pressure board 25a, compresses increased pressure board by constrictor 25b and compress stacked 9.
Similar to above-mentioned the 4th embodiment, by this laminate manufacturing installation, cooling layer pressing plate more effectively in pressurization can make the surface roughness minimum of the laminate of acquisition, less than 1 μ m.Under the situation that the coolant bath that is immersed in container 26 is cooled off, the time that temperature is reduced to less than the vitrescence transition temperature is about 5 seconds, so can shorten manufacturing time significantly.And, be provided with cooling device around the laminate, can cool off simultaneously and build up multistage many laminates, to increase output.
In another laminate manufacturing installation of the 6th embodiment shown in Figure 8, improved the cooling device that uses among first embodiment, the cooling tube 28 that intermediate layer 6 is mixed be embedded in this intermediate layer, this cooling tube forms the path 51 of water, the similar cooling fluid of air, laminate is cooled to be lower than the vitrescence transition temperature of epoxy resin.
By this laminate manufacturing installation, can make the surface roughness minimum of the laminate of acquisition, less than 1 μ m.Because come cooling layer clamp block 9 internally with intermediate layer 6 with cooling tube 28, cool off so can distribute with even temperature, all each laminates can reach consistent surface roughness, and the middle body of each laminate also can reach consistent surface roughness with peripheral part.Under situation about cooling off with this intermediate layer 6, temperature is reduced to be lower than the required time of vitrescence transition temperature to be about 3 minutes, can shorten manufacturing time effectively.
In another laminate manufacturing installation of as shown in Figure 9 seventh embodiment of the invention, the cooling device of first embodiment is improved, intermediate layer 6 is formed fin types, use with the device that cools off this heat radiation intermediate layer from its side.Fig. 9 A and 9B show real example, and in previous example, cooling device comprises fan 29, and in a back example, cooling device is a blowing mouth 30.
By this laminate manufacturing installation, all less than 1 μ m, this is be to carry out from the periphery when exerting pressure because cool off to the surface roughness of laminate that can make acquisition at central authorities and peripheral part.And under situation about cooling off with the intermediate layer 6 of this fin type, the required time of vitrescence transition temperature that temperature is reduced to the resin that is lower than the formation laminate is about 5 seconds, so can shorten manufacturing time greatly.
In another laminate manufacturing installation of as shown in figure 10 the 8th embodiment, intermediate layer 6 extends to two outsides of stacked sub-assembly 3, the cooling piece 27 this structure shown in the 6th embodiment of Fig. 8, that have cooling tube 28 is connected to two elongated ends in intermediate layer 6, utilizes the heat conduction to cool off stacked sub-assembly 3 by intermediate layer 6.Linkage arrangement that need not this cooling piece 27 can provide fan-shaped cooling piece for two extensions in intermediate layer 6, cools off by cooling air etc. is blowed to cooling piece.In the present embodiment, can fold up with fore-and-aft direction single continuous metal forming as metal forming 2.
This laminate manufacturing installation can make the surface roughness minimum of the laminate of acquisition, less than 1 μ m by cooling layer pressing plate simultaneously of exerting pressure to it.Especially,,, and can make the surface roughness of each laminate even, also can make the surface roughness of the middle body of each laminate and peripheral part all even so can realize the equally distributed cooling of temperature because available intermediate layer 6 cools off stacked 9 internally.
Conducting with the heat in intermediate layer 6 under the situation of cooling layer pressing plate, the required time of vitrescence transition temperature that temperature is reduced to the resin that is lower than the formation laminate is about 25 seconds, so manufacturing time can suitably shorten.
In the laminate manufacture method of the 9th embodiment shown in Figure 11 to 13, cooling is performed such, and is stopping under the plus-pressure after the heating stacked sub-assembly 3 being sent to a pair of relative cooling press 50 from carrying out hot formed moulding press 4.
More particularly, Figure 11 shows this state, stacked 9 from moulding press 4 taking-ups, cool off by cooling press 50, this cooling press 50 belongs to same type with above-mentioned cooling and the moulding press 8 of Fig. 2, flow channel is set in the increased pressure board 7 of moulding press 4 forms coldplate 27, cooling fluid is flow through this path cool off.In this case, form stacked 9 intermediate layer 6 all or part of and can form mode same as shown in Figure 8 and cool off, can make stacked 9 also to cool off, reach more effective cooling effect from the inside.
According to this laminate manufacture method, can carry out heating and cooling together to stacked sub-assembly 3, to boost productivity.
And, shown in the state of cooling of Figure 12 A, under pressure, carried out after the hot forming, separate stacked 9, it is splitted into independent laminate sub-assembly 3, again each stacked sub-assembly 3 of taking apart being sent to cooling press 50, is that the unit cools off with single stacked sub-assembly 3, and this can improve this method on cooling velocity.In this cooling press 50, a large amount of coldplates 27 is provided, each stacked sub-assembly 3 is arranged between the two adjacent coldplates of these coldplates 27.
And, in this case, shown in Figure 12 B, can carry out stacked sub-assembly 3 is splitted into independent stacked sub-assembly with metal wire 53, each metal wire 53 is arranged in each fold of metal forming 2, at one end draws metal wire 53 with outside direction, with at each fold place cutting metal paper tinsel 2.
And, the state of cooling as shown in FIG. 13A, take stacked 9 apart after can also and being separated into a plurality of stacked sub-assemblies 3 in hot forming under the pressure, and to be the unit with a plurality of stacked sub-assemblies 3 cool off to the stacked sub-assembly 3 that is sent to cooling press 50 as a unit.As shown in Figure 3A, in this case, come instead of part intermediate layer 6 with the transmission plate 54 shown in transmission board or Figure 13 B, can carry out loading and unloading to a plurality of stacked sub-assemblies 3 with respect to the cooling press, each a plurality of stacked sub-assemblies Unit 3 is placed on each transmission plate 54.
Under the above-mentioned situation that stacked 9 is splitted into a plurality of stacked sub-assemblies 3 as a unit, can make work than separating and to split into single stacked sub-assembly simpler.On the other hand, when splitting into single stacked sub-assembly 3 to stacked 9, its advantage is to cool off sooner.
In the tenth embodiment shown in Figure 14 A and the 14B, intermediate layer 6 is formed by a plurality of this middle layer elements 51b shown in Figure 14 A, each unit 51b is made up of aluminum extruded thing, it is extension, straight bar shaped, has the square-section, it comprise vertical break-through flow channel 51, so that coolant flow, as shown in Figure 14B, a plurality of middle layer elements 51b with a pair of concetrated pipe 51c abreast boundling become the plane, and concetrated pipe 51c is respectively arranged with nipple 51d, links up with flow channel 51, gives prominence in its turnover side.
With the intermediate layer 6 of above-mentioned this recombiner unit 51b, can make air or similar cooling fluid flow through flow channel 51 and cool off.And, can form such composite interlayer 6, suitably select the quantity of the middle layer elements 51b of boundling side by side, make it have selected width, also can under the situation that part is damaged, only replace the one or more middle layer elements 51b that damage and just can repair composite interlayer 6 on the whole.
And intermediate layer 16 can form best with following different modes.
Promptly; as shown in figure 15, baffle 52 is installed to the upper and lower surface of unit 51b, makes middle layer elements 51b become as a whole reliably; when break owing to reasons such as scratches in intermediate layer 6, can replace scratch intermediate layer 6 baffle 52 or only the scratch part of polishing plate just can repair.
And as shown in figure 16, the intermediate layer can form like this, and convex line 51a promptly is set on inwall at least, increases the inner wall surface area of flow channel 51, to improve cooling effectiveness.
Moreover formation can integral body be extruded in intermediate layer 6 when beginning.
And, in order on the surface in intermediate layer 6, to form electric insulation layer, preferably intermediate layer 6 is handled, form hard anodized aluminum, then the surface of handling through anodized aluminum is immersed in tetrafluoroethene or the analog, carry out Teflon (trade mark) and handle.About 30 to the 60 μ m of this electric insulation bed thickness that form, electric insulation is made in the intermediate layer, forms stacked 9 so can directly contact metal forming 2 with the surface of this insulating intermediate layer 6.That is,, can make the work of the folded piece 9 of making layer easier owing to do not need to insert insulating trip.Especially, in this example, improved case hardness, and by the sliding property of Teflon processing improvement wiping, can make the surface in intermediate layer 6 can scratch by the processing of hard anodizing aluminium.Under the situation of using baffle 52, the surface that is preferably in baffle 52 forms this kind electric insulation layer.
And, shown in Figure 17 A, preferably be arranged to provide this this heat radiation waveform edge 6b cooling along the opposite side shown in Figure 17 A in intermediate layer 6, and do not provide the inside flow channel 51 of cooling fluid, the cooling air is blowed to wave edges 6b, the intermediate layer 6 as shown in the user mode of Figure 17 B is cooled off.Wave edges 6b plays the effect of cooling fan, can cool off intermediate layer 6 effectively.Can replace the cooling air with liquid nitrogen, with the further cooling effect that improves.
When aforesaid shape synthetic resin material 1 of cooling, preferably when exerting pressure, cool off this material 1, until temperature reaches the vitrescence transition temperature that is lower than the resin that constitutes sheet shape synthetic resin material 1, in case temperature is lower than the vitrescence transition temperature of resin, just need exert pressure no longer especially.Promptly, when being higher than the vitrescence transition temperature, discharged pressure in temperature, then the laminate that obtains can cause the deterioration of surface roughness owing to the weave pattern of having clashed into the glass fibre substrate, and when temperature is lower than the vitrescence transition temperature, the surface flatness of laminate is just fixing, can obtain the splendid laminate of surface flatness.
Therefore, after arriving the vitrescence transition temperature that is lower than resin, temperature splits into independent stacked sub-assembly 3 to stacked 9, can wait cooling off stacked sub-assembly 3 apace in their independent unit by blowing, and cool off fast and effectively, further reduce temperature so that handle.
In Figure 18 A to 18D, show when as above cooling off thermometric example to sheet shape synthetic resin material 1.
Shown in Figure 18 A, in this case, can determine the time that interruption is exerted pressure by the temperature of measuring virtual plate 55, virtual plate 55 carries thermocouple, is arranged on stacked 9 middle section.Also can measure stacked 9 temperature in the noncontact mode, and, determine the time that interruption is exerted pressure according to its temperature of releasing sheet shape synthetic resin material 1 with the radiation thermometer shown in Figure 18 B 56.Can also shown in Figure 18 C,,, determine the time that interruption is exerted pressure according to its temperature of releasing sheet shape resin material 1 by measuring temperature as the air outlet slit in cooling fluid cooling intermediate layer 6.In addition, shown in Figure 18 D, also can determine the time that interruption is exerted pressure according to its temperature of releasing sheet shape resin material 1 by measuring the resistance value of metal forming 2.
And, the same as has been described, should preferably reach the uniform cooling of carrying out in the following manner to stacked 9 cooling of carrying out.That is, shown in Figure 19 A to 19C, cooling fluid is flow through comprise that the flow direction in each intermediate layer 6 of many flow channels 51 of distribution is different between the adjacent lanes of flow channel 51 side by side, best cooling fin shape resin material 1.
More particularly, as seeing in Figure 19 A and 19B, intermediate layer 6 is formed by five middle layer elements 51b of overall distribution side by side respectively.In each middle layer elements 51b, form the flow channel 51 of three cooling fluids, every tube connector 51d is connected on three paths 51.Then, shown in Figure 19 B, make cooling fluid between two adjacent middle layer elements 51b, flow through each intermediate layer 6, and shown in Figure 19 C, also between two adjacent intermediate layers 6, flow through and form each intermediate layer 6 of stacked 9 to replace different directions to replace different directions.
Because the flow direction difference of cooling fluid between adjacent flow channel 51, so can be on stacked 9 level and vertical direction the balanced because difference of the cooling effect that the temperature difference of flow channel 51 in-out ends causes can reach whole 9 cooling equably.
Because near the difficult cooling in the place at stacked 9 center, so preferably carry out the cooling of following mode.
That is, shown in Figure 20 A to 20E, the place in approaching more stacked 9 central area makes cooling fluid flow through each intermediate layer 6 with higher flow velocity more, with cooling fin shape synthetic resin material 1, and can cool off whole stacked 9 equably.More specifically, shown in Figure 20 A, in each intermediate layer 6, more near the center in intermediate layer, flow channel 51 distributes intensively more, perhaps shown in Figure 20 B, when each flow channel 51 during with rule basically spaced apart, near the center, the cross-sectional area of the flow channel 51 of formation increases gradually more.
When the essentially identical flow channel 51 of cross-sectional area with basically the rule spaced apart the time, the carrying out of control cooling, make more and provide cooling fluid with big more flow velocity or lower temperature near 6 centers, intermediate layer, this can obtain basically the effect identical with using the described intermediate layer of Figure 20 A and 20B 6, and is consistent with the core to piece to stacked 9 cooling.
Short transverse for stacked 9, use has the intermediate layer 6 of the flow channel 51 of such setting, promptly shown in Figure 20 C, flow channel 51 is arranged to high more near center density more, perhaps shown in Figure 20 D, cross-sectional area near center flow channel 51 is big more more, like this can be consistent with core to stacked 9 cooling.The temperature that increases the flow velocity of cooling fluid more near the center of piece more or reduce liquid more also can reach identical effect, to the cooling of pressing plate 9 layer by layer with consistent to its core.
And, shown in Figure 20 E, cooling also can be carried out like this, promptly reduces the quantity be arranged near sheet shape synthetic resin material 1 between the two adjacent intermediate layers 6 at stacked 9 center, the core of cooling block suitably is so can cool off uniformly the core of piece.
For another example shown in Figure 21 A to 21D, it is preferable cooling off each sheet shape resin material 1 in the following manner, promptly the flow channel 51 in two adjacent intermediate layers 6 in stacked 9 is interconnected by tube connector 52 ', provide the cooling fluid of low temperature, cool off tube connector 52 ' simultaneously in the centre to each flow channel 51.
Promptly, cooling fluid does not need to provide for each intermediate layer 6, but only provides to part intermediate layer 6, and the liquid that provides is sent to remaining intermediate layer 6 by tube connector 52 ', can reduce the quantity of cooling fluid in-out end like this, can provide cooling fluid in simpler mode.And, when air as cooling fluid, and air can reduce the flow velocity that provides of cooling fluid when going out end row to atmosphere, and the discharge noise limit of cooling fluid is become lower.
More particularly, in the structure shown in Figure 21 A, use the tube connector 52 ' made such as Teflon (trade mark) pipe that the flow channel 51 in intermediate layer 6 is interconnected with vertical direction and adjacent path, cooling piece 57 such as U-shaped pipe that is made of copper or helix tube is set in the middle of each tube connector 52 ', cooling piece 57 is immersed in the cooled containers 59 that is connected with cooler 58, and cooling fluid is cooled off.
Cooling piece 57 can also constitute shown in Figure 21 B to 21D like that.That is, in Figure 21 B, tube connector 52 ' is made linear, and cooling piece 57 is made spiral copper pipe, is looped around pipe 52 ' on every side, with the cooling fluid cooling latter of flowing through cooling piece 57.In Figure 21 C, tube connector 52 ' coats with cooling piece 57, and its outer tube surrounding tube 52 ' is passed through cooling fluid in it.In Figure 21 D, the cooling piece 57 of making copper cooling fan form is installed in the periphery of tube connector 52 ', cool off by the air that is blown into.
Claims (20)
1, a kind of method of making laminate comprises:
Be built up stacked sub-assembly each other with sheet shape synthetic resin material and metal forming;
To stacked sub-assembly hot forming, the metal forming in stacked sub-assembly provides electric current simultaneously under pressure; And
After stopping hot forming, still keep this this stacked sub-assembly of pressure cooling, to obtain laminate.
2, method according to claim 1 is characterized in that, hot forming is carried out in hot forming and pressue device, after this stacked sub-assembly that is sent to the independent cooling press from hot forming and pressue device is cooled off.
3, method according to claim 1 is characterized in that, cools off keeping under the pressure, until the temperature of sheet shape synthetic resin material is lower than the vitrescence transition temperature of the resin that forms material.
4, a kind of method of making laminate comprises:
Be built up a plurality of stacked sub-assemblies each other with sheet shape synthetic resin material and metal forming;
These stacked sub-assemblies are overlapped into multistage, between each stacked sub-assembly, insert the electric insulation intermediate layer, form stacked;
To this stacked hot forming, the metal forming in this stacked provides electric current simultaneously under pressure; And after stopping hot forming, still keep this stacked of this pressure cooling, to obtain laminate.
5, method according to claim 4, it is characterized in that, after stopping hot forming, separate this stacked, split into each stacked sub-assembly, and cooling off as a unit from being used under pressure, carrying out the stacked sub-assembly that hot formed moulding press is sent to independent cooling press.
6, method according to claim 4, it is characterized in that, after in hot forming and pressue device, stopping hot forming, separate this stacked, split into each stacked sub-assembly, and cooling off as a unit from being used under pressure, carrying out each stacked sub-assembly that hot formed moulding press is sent to independent cooling press.
7, method according to claim 4 is characterized in that, the intermediate layer is made its marginal portion and had waveform, and cooling fluid is blowed to the waveform in this intermediate layer, by the cooling intermediate layer sheet shape synthetic resin material is cooled off.
8, method according to claim 4, it is characterized in that, keeping pressure cools off this stacked, until the temperature of sheet shape synthetic resin material is lower than the vitrescence transition temperature of the resin that forms this material, after this, split into independent stacked sub-assembly to this stacked, independent stacked sub-assembly is proceeded cooling as a unit.
9, method according to claim 4, it is characterized in that, the intermediate layer forms has the coolant flow path that extend side by side between the opposing end surface in intermediate layer, cooling is performed such, make cooling fluid between each flow passage, flow through flow passage, with cooling fin shape synthetic resin material with different directions.
10, method according to claim 4, it is characterized in that the intermediate layer is provided with the coolant flow path, cooling is performed such, make the approaching more stacked center of cooling fluid with fast more velocity flow via flow path, with cooling fin shape synthetic resin material.
11, method according to claim 4, it is characterized in that, be provided with the coolant flow path in inside, intermediate layer respectively, the flow passage in each intermediate layer is connected to each other by tube connector, cooling is performed such, make cooling fluid flow through flow channel and tube connector, simultaneously tube connector is cooled off.
12, a kind of laminate manufacturing installation comprises:
Moulding press is used for the stacked sub-assembly that mold pressing is formed by stacking each other by sheet shape synthetic resin material and metal forming under pressure,
Electric heater unit, be used for to this metal forming provide electric current and
Cooling device is used for exerting pressure to this stacked sub-assembly simultaneously ending this stacked sub-assembly of cooling after this metal forming provides electric current.
13, a kind of laminate manufacturing installation comprises:
Moulding press is used under pressure stacked of mold pressing, and this stacked stacked sub-assembly that is formed by stacking each other by a plurality of shape synthetic resin materials and metal forming forms, and is inserted with the electric insulation intermediate layer respectively building up between each multistage stacked sub-assembly,
Electric heater unit, be used for to each metal forming provide electric current and
Cooling device is used to cool off the intermediate layer.
14, device according to claim 13 is characterized in that, cooling device is scattered in stacked peripheral part of cooling.
15, device according to claim 13 is characterized in that, moulding press comprises and stacked increased pressure board that contacts that cooling device is arranged to the increased pressure board of cooling frame press.
16, device according to claim 13 is characterized in that, the intermediate layer is provided with the cooling fluid flow channel.
17, device according to claim 16 is characterized in that, the intermediate layer is formed by aluminum extruded thing.
18, device according to claim 16 is characterized in that, the intermediate layer is provided with baffle, is installed to the both sides in intermediate layer.
19, device according to claim 17 is characterized in that, the intermediate layer comprises the middle layer elements of a plurality of extensions respectively, and they have the vertical upwardly extending flow channel in the unit, and are arranged side by side, and forms an integral body.
20, device according to claim 16 is characterized in that, the intermediate layer is provided with and is formed on lip-deep electric insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97102294 CN1163193A (en) | 1996-01-18 | 1997-01-17 | Method for producing veneer sheet and device for producing said veneer sheet |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6375/96 | 1996-01-18 | ||
| JP219542/96 | 1996-08-21 | ||
| CN 97102294 CN1163193A (en) | 1996-01-18 | 1997-01-17 | Method for producing veneer sheet and device for producing said veneer sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1163193A true CN1163193A (en) | 1997-10-29 |
Family
ID=5166231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97102294 Pending CN1163193A (en) | 1996-01-18 | 1997-01-17 | Method for producing veneer sheet and device for producing said veneer sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1163193A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625586A (en) * | 2012-04-19 | 2012-08-01 | 苏州市嘉明机械制造有限公司 | Novel oil pressure type copper foil electric conduction pressing machine |
| CN106664799A (en) * | 2014-07-17 | 2017-05-10 | Cedal装置有限责任公司 | Apparatus for obtaining multilayer sheets for printed circuits and relative method |
| CN108891116A (en) * | 2018-08-14 | 2018-11-27 | 活跃科技股份有限公司 | Gas-liquid cold type trigger squeeze and cooling means for it |
| CN111491452A (en) * | 2020-04-28 | 2020-08-04 | 深圳市信维通信股份有限公司 | L CP flexible circuit board and manufacturing method thereof |
-
1997
- 1997-01-17 CN CN 97102294 patent/CN1163193A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102625586A (en) * | 2012-04-19 | 2012-08-01 | 苏州市嘉明机械制造有限公司 | Novel oil pressure type copper foil electric conduction pressing machine |
| CN106664799A (en) * | 2014-07-17 | 2017-05-10 | Cedal装置有限责任公司 | Apparatus for obtaining multilayer sheets for printed circuits and relative method |
| CN106664799B (en) * | 2014-07-17 | 2020-04-10 | Cedal装置有限公司 | Apparatus for obtaining a multilayer sheet of printed circuits and relative method |
| CN108891116A (en) * | 2018-08-14 | 2018-11-27 | 活跃科技股份有限公司 | Gas-liquid cold type trigger squeeze and cooling means for it |
| CN111491452A (en) * | 2020-04-28 | 2020-08-04 | 深圳市信维通信股份有限公司 | L CP flexible circuit board and manufacturing method thereof |
| CN111491452B (en) * | 2020-04-28 | 2021-05-25 | 深圳市信维通信股份有限公司 | LCP flexible circuit board and manufacturing method thereof |
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