JPS6227975B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a composite sheet-like product in which two or more different viscous liquids are alternately laminated in a multilayered manner.

Wide composite sheets, in which different components are arranged in alternating layers in the width direction, have the potential to be used in a variety of applications. For example, FIG. 1 is a perspective view showing an example of such a composite sheet, in which a composite sheet 1 is composed of a synthetic polymer A and another synthetic polymer B alternately laminated in the width direction of the sheet. They are arranged in a shape. Now, synthetic polymer B
If the synthetic polymer A is formed as a carbon-containing component and the synthetic polymer A is a carbon-free component, this composite sheet can be used as a transparent antistatic film. In addition, a synthetic polymer A that dissolves in a specific solvent
A composite sheet is formed from the non-dissolving synthetic polymer B, and two such composite sheets are pasted together so that the alignment directions of the layers intersect with each other, and then treated with the above solvent to dissolve the dissolved component A. is removed to obtain a mesh-like sheet.

The composite sheet described above can be manufactured by an apparatus such as that shown in FIG. That is, in a stock solution supply section 2 to which different synthetic polymers A and B are supplied, there is a stacking section in which a plurality of multilayer stackers 3 for stacking components A and B alternately in multilayers are housed in multiple stages. 4 are connected to each other, and an extrusion mouthpiece 5 having an extrusion slit is provided on the exit side of the laminated portion 4. As this multilayer laminate 3,
Special Publication No. 38-19694, Publication No. 39-437,
A static mixer described in Japanese Patent Publication No. 44-8290 can be used. In both cases, after bonding two components A and B, they are subdivided on a plane perpendicular to the bonded surfaces, and each composite after the subdivision is bonded again so that the bonded surfaces are parallel. The basic operation is to combine and integrate them. Therefore, if this basic operation is repeated multiple times, a multilayered composite in which components A and B are alternately repeated many times will be obtained. Therefore, in the apparatus shown in FIG. 2, components A and B supplied to the stock solution supply section 2
A multilayered composite flow is formed in the multilayer laminate 3, and by extruding this composite flow as a sheet 1 with the layer direction perpendicular to the width direction of the slit of the nozzle 5, both A and B components are A sheet laminated in multiple layers in the width direction is obtained.

However, according to the results of the study by the present inventors,
The composite sheet obtained from the device shown in Figure 2 is
It was found that the laminated layers of components A and B were not regularly distributed in the cross section, and as shown in FIG. 3, the surface components became irregular with the surface components flowing to both sides toward both ends. Such irregular distribution causes unevenness in the quality of the above-mentioned applied products and is not desirable.

Therefore, an object of the present invention is to solve the above-mentioned drawbacks in composite sheet production, and to provide a sheet that can produce a multilayered composite sheet in which different composite components are regularly and alternately distributed in the width direction of the sheet. The purpose of the present invention is to provide an apparatus for producing shaped articles.

The present invention, which achieves the above objects, comprises a multilayer laminator for forming a multilayer composite by alternately layering two or more different viscous liquids, and an extrusion die having a slit for forming the multilayer composite into a sheet shape. The multi-layer laminate whose layer direction is perpendicular to the width direction of the slit is provided with a plurality of pieces installed in the same direction as the width direction of the slit and in a direction perpendicular to that direction, and A sheet-like product manufacturing apparatus is characterized in that the overall width of the multilayer laminate is set to a value equal to or greater than the slit width, and the overall height of the multilayer laminate is set to a value exceeding the slit thickness. It is something.

The details will be explained below using examples of the present invention shown in the figures.

FIG. 4 is a partially sectional plan view of a device showing an embodiment of the present invention, and FIG. 5 is a partially sectional side view.

In FIGS. 4 and 5, reference numeral 2 denotes a stock solution supply section, to which a stock solution distribution section 6 is connected, as well as a stacking section 4 and an extrusion die 5. Two components A supplied to the stock solution supply section 2
and B are respectively 4 in the next stock solution distribution section 6.
Components A and B, which are distributed into two streams and distributed into four streams, respectively, form one set of AB, and each of the multilayer stackers 3 arranged in four rows in the direction perpendicular to the flow in the stacking section 4. flows into. A set of both A and B components that have entered the respective multilayer stackers 3 arranged in four rows as described above sequentially pass through the multilayer stackers 3 connected in series in multiple stages.
The components are stacked alternately in multiple layers. The other multilayer stackers 3 arranged in four rows are also stacked through similar operations. The flows of the laminated composites that have passed through each of the four rows of multilayer laminates 3 come into contact with each other at the outlet of the laminate section 4, become one, and are extruded from the slit of the extrusion mouthpiece 5 in the form of a sheet.

The stock solution distribution section 6 is a mechanism provided to distribute both components A and B to each of the multilayer laminates 3 arranged in four rows in the same direction as the width of the next slit. Therefore, if the number of multilayer laminates 3 arranged in the same direction as the slit width direction in the lamination section 4 is 5, the stock solution distribution section 6 will distribute both A and B components into 5 streams each. If there are 6 rows of 3, each must have 6 streams. FIGS. 6 1, 2, and 3 show an example of a distributor provided inside such a stock solution distribution section 6, which includes three distribution plates 7,
8 and 9 are configured as one set. The distribution plate 7 has an A component introduction hole 10 and a B component introduction hole 11 at both ends.
Of these, the introduction hole 11 communicates with a groove 12 that is not penetrated in the thickness direction of the distribution plate provided at the center. In the groove 12, there are further four branch grooves 1 that are not penetrated in the thickness direction of the distribution plate.
3 are provided on both sides. An A component introduction hole 10' is provided at one end of the distribution plate 8, and this introduction hole 10' communicates with a groove 14 provided in the center. Groove 14
Furthermore, four branch grooves 15 are provided on both sides. Additionally, a groove 14 is provided between these branch grooves 15.
A hole 16 is provided so as to pass through the hole. When such a distribution plate 8 is stacked on the distribution plate 7,
The introduction hole 10' corresponds to communicate with the introduction hole 10, and the hole 16 corresponds to communicate with the branch groove 13. Next, holes 17 and 18 are provided in the distribution plate 9 so as to pass through them alternately, 8 holes on one side, 16 holes in total. When this distribution plate 9 is stacked on the distribution plate 8, the holes 17 correspond to communicate with the branch grooves 15, and the holes 8 correspond to communicate with the holes 16 connected to the branch grooves 13.

When the distribution plates 7, 8, and 9 as described above are stacked in this order and assembled into the stock solution distribution section 6 so that the distribution plate 7 faces the stock solution supply section 2 side, the component A flows through the introduction hole 1.
Since the component B is introduced from the introduction hole 11, the A component comes out from the hole 17 and the B component comes out from the hole 18 in the distribution plate 9.
Therefore, it is possible to distribute and supply the stock solution to each of the multilayer laminates 3 arranged in four rows in the slit width direction and in two upper and lower stages, with the A and B components as one set.

As mentioned above, the multilayer laminate 3 incorporated in the lamination section 4 is a static mixer described in Japanese Patent Publication No. 38-19694, Japanese Patent Publication No. 39-437, Japanese Patent Publication No. 8290-1982, etc. Equipment can be used effectively. In particular, the structure shown in FIG. 7 is particularly excellent in reducing turbulence because the viscous liquid, which is a component, is not subjected to repeated extreme compression and expansion during the stacking process.

The multilayer laminate shown in FIG. 7 consists of two parts 71 and 7.
1' is constructed as one unit, and forms a substantially square shape in a plane perpendicular to the flow direction of the liquid.
When the liquid flow is in the direction of the arrow, the component 71 has inlet ports 72 and 73 at diagonal positions of the square on the inlet side, and a horizontal partition wall 74 is interposed between the upper and lower inlet holes 72 and 73, respectively. However, it remains horizontal and is connected to a passageway heading towards the center.
On the other hand, the component 71' has a vertical partition wall 75 in the center on the flow inlet side, and the passage separated by this partition wall 75 has outlet ports 72' and 73 arranged diagonally in a square on the outlet side. ' will be contacted. The parts 71 and 71' having such a configuration are U-u, V-u, W-w, and X-x shown in the figure, respectively.
A multi-layer laminate is obtained by connecting and joining together and fitting this into a rectangular tube having a passage with the same dimensions as the outer periphery.

FIG. 8 schematically shows the behavior of the liquids when both viscous liquids A and B are passed through the multilayer laminate shown in FIG. 7 described above. First, the introduction port 7 of the component 71
In 2,73, the A component and B component are phase I
It will be introduced in the following state. Both components A and B are flowed horizontally to the center, where they pass through the horizontal partition wall 44.
When it exits, it is joined and laminated on top and bottom to form a composite flow in a phase state. As this composite flow progresses further, it is pushed up and down, expanded and deformed on both sides, and becomes a phase state. This process of deformation does not involve much change in the cross-sectional area of the flow path. As the flow progresses further from the phase state, the composite flow is divided by the vertical partition wall 75 so as to be perpendicular to the composite planes A and B, resulting in a phase state. When proceeding further from this state, a phase state is reached at the outlet ports 72' and 73'. That is, compared to the phase, the phase has a composite flow in which both the A and B components are stacked one above the other.

The above is the lamination operation carried out in a multilayer laminate in which parts 71 and 71' form one unit.
When such units are combined in series in multiple stages,
The state of the phase mentioned above is――――
By repeating this process, the number of layers is gradually increased. In other words, when n units of the above are connected in series, the composite flow that is two layers at the inlet becomes two layers at the outlet.
×2n layers. For example, if 7 are connected, 256 layers, 9
If you connect them, you can make up to 1024 layers. This multilayer laminate 3 is housed in the laminate section 4 so that its layer direction is perpendicular to the slit width direction.

In the present invention, as described above, the multilayered composite flow in the laminated portion 4 is extruded into a sheet form from the extrusion mouthpiece 5. In this case, a plurality of laminated parts 4 are arranged so that the multilayer laminates 3 are perpendicular to the flow so that the slit width of the extrusion mouthpiece 5 is the same as or larger than the slit width of the extrusion mouthpiece 5. is narrowed down to be smaller than the height of the multilayer laminate 3. In the case of the apparatus shown in FIG. 2, when the composite flow in the laminated part 4 is extruded from the extrusion nozzle 5, the narrow width of the composite flow in the laminated part expands to the wide slit width of the extrusion nozzle. However, in the present invention, when the laminated composite flow is extruded from the extrusion die, the fluid flow does not expand. Rather, since the sheet is compressed in the thickness direction and extruded, the laminated composite flow has a rectifying effect due to a throttling effect, and the formed layer is not disturbed.
In this case, it is more preferable that the overall width of the plurality of multilayer laminates arranged in the same direction in the slit width direction is greater than or equal to the slit width, and deformation of the layers can be suppressed. In order to ensure the above effect, the aperture angle θ (FIG. 5) in the thickness direction is preferably in the range of 30 to 60 degrees.

As described above, according to the present invention, a plurality of multilayer laminates are arranged in parallel in the slit width direction of the extrusion die in the laminate section provided at the front part of the extrusion die, and the overall width thereof is the same as or less than the slit width. In addition to the above, since the slit is restricted in the thickness direction, the extruded multilayered composite sheet can be stabilized without disturbance of the layers in the cross section.

Since the present invention can be applied to laminar flow in general, it can be applied not only to the synthetic polymers mentioned in the examples, but also to other highly viscous liquids, such as starch syrup in food processing. can.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a multilayer composite sheet obtained from an apparatus according to the present invention, FIG. 2 is a partially sectional plan view of an apparatus not according to the present invention, and FIG.
4 and 5 are partial cross-sectional views of a device according to an embodiment of the present invention, respectively, a plan view and a side view, and FIG. 7 is an exploded perspective view of the multilayer laminate used in the above device, and FIG. 8 is a schematic diagram showing changes in fluid given by the multilayer laminate of FIG. 7. It is a diagram. 1... Composite sheet, 2... Stock solution supply section, 3...
Multilayer laminate, 4... Lamination section, 5... Extrusion die, 6
...Standard liquid distribution section.

Claims (1)

[Claims] 1. Consists of a multilayer laminator that forms a multilayered composite by alternately layering two or more different viscous liquids, and an extrusion die having a slit for forming the multilayered composite into a sheet shape, with the layer direction aligned with the slit. A plurality of the multilayer laminates are installed in the same direction as the width direction of the slit and in a direction perpendicular to the width direction of the slit, and the overall width of the plurality of multilayer laminates is An apparatus for manufacturing a sheet-like article, characterized in that the overall height of the multilayer laminate is set to a value equal to or greater than the slit width, and the overall height of the multilayer laminate is set to a value exceeding the slit thickness.