JPH047701B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a method for producing a patterned multilayered laminate made of a viscous liquid and a core material.

(Technical background of the invention and its problems) A rational method for manufacturing a chamois leather-like sheet made of a porous polyvinyl acetal material is disclosed in, for example, Japanese Patent Publication No. 17284/1984. In this method, a viscous stock solution made by adding and mixing sulfuric acid, formalin, and a pore-forming aid to an aqueous polyvinyl alcohol solution is poured into a flat-bottomed container, and a fabric (for example, cheesecloth) as a core material that has an affinity for polyvinyl acetal is flattened. Place it on top of the stale liquid, wait a while, then pour the viscous stock solution over it again, then place a separator (Japanese paper or similar membrane) that has poor adhesion to polyvinyl acetal, and repeat the above operation. A multi-layered body of polyvinyl acetal sponge stock solution containing core materials and separators is constructed. This stock solution laminate is heated to solidify, and then the separator is removed to obtain a sheet of polyvinyl acetal sponge whose core material is comfortable. Therefore, although this operation was a major improvement over the method of creating sheets one layer at a time in that it produced several or tens of layers of sheets in one container, it still had to be done entirely by hand. Therefore, it could not be said that it was sufficient.

An example of a device that solves these drawbacks is disclosed in Japanese Patent Publication No. 48-38630.
This device has a structure as shown in FIGS. 1 and 2, and the annular conveyor a has a straight path A1, a curved path B1, a straight path A2, a curved path B2, and 1.
It is provided so as to circulate, and there is also an extraction path u on the side.
It is equipped with In the illustrated example, the conveyance mechanism of the annular conveyor a includes a large number of drive roller members 1, 1, 1,
It is composed of... Nozzle blocks b1 and b2 are provided at the upper center of the straight paths A1 and A2, respectively, for supplying viscous liquid from one tank, and above near the end of the curved path B1 are a Japanese paper supply table 2 and a paper supply stand 2 for supplying separators. A cloth supply table 3 on which a core material is placed is provided above near the end of the straight path A2. As shown in FIG. 2, the driving roller member 1 of the annular conveyor a is rotatably supported by appropriate frame members 4 to 6, and is rotationally driven by a motor (not shown) through respective sprocket wheels and chains. The specific roller member is driven to rotate regularly and at a desired circumferential speed. The annular conveyor a is provided with a transparent cover 7 made of synthetic resin that does not interfere with the transfer speed of the tray c and the rotational movement of the roller member 1. This cover 7 is provided over almost the entire area of the annular conveyor a,
The vicinity of the Japanese paper supply table 2 and the cloth supply table 3 are open to form a space sufficient for supplying Japanese paper and cloth to the tray c from the outside. The nozzle blocks b1 and b2 for supplying viscous liquid installed above and across the direct paths A1 and A2 have an effective working width approximately equal to the width of the saucer c, as shown in FIG. , a perforated plate d having a large number of orifices uniformly bored in the width direction is provided on the lower surface of the perforated plate d, so that the viscous liquid uniformly flows down from the perforated plate d into the saucer c. As shown in FIG. 2, the saucer c has one side wall 8 inclined outward, and the other side walls 9 to 11 are provided substantially vertically.
As a whole, it has the shape of a low rectangular box with an upper opening, and several reinforcing ribs 12 are provided on the lower surface of the bottom horizontally in the direction of travel. In addition, in the vicinity directly below the nozzle blocks b1 and b2, two endless belt-shaped aprons are placed across the path directly below each of them, and are driven at a surface speed smaller than the surface speed of the roller member of the conveyor in the vicinity. It includes rollers 13,13 and 14,14. These apron rollers 13, 13 and 14, 14 are connected to the side surface 9 of the saucer c,
11, which is about 1.5 to 2.0 times the length in the traveling direction of the tray C, and comes into contact with the outer surfaces of the side surfaces 9 and 11 of the saucer C, which is about 1.5 to 2.0 times the length of the tray C that passes between them, and has a width that is almost equivalent to the width of the saucer C that passes between them. The sides 9 and 1 of the saucer c are arranged oppositely at intervals and pass between them.
1 and pinches the saucer c, and adjusts the center position of the saucer c in the traveling direction,
Temporarily adjusting the speed of the tray c, the contact between the preceding tray and the succeeding tray in this portion is made closer, and the passing speed of the tray c is made more accurately constant.

In such a configuration, a case will be described in which a uniform multi-layered product is manufactured as an intermediate process product in the production of a chamois-like sheet made of a polyvinyl acetal porous material.

First, the driving roller member 1 of the annular conveyor a is rotated. The direction of rotation is such that the tray c placed thereon moves counterclockwise in FIG. 1 and rightward in FIG. 2. The trays c are sequentially placed horizontally on the roller member 1 from appropriate positions and arranged so as to be spread over the entire annular conveyor a at appropriate intervals. The circumferential speed of each drive roller member 1 is not uniform throughout the annular conveyor a, but is divided into groups and driven by sprockets or the like to achieve desired speeds. That is, the speed is gradually reduced until the tray c approaches the nozzle block b1 on the straight path A1, and until it approaches the nozzle block b2 on the straight path A2, and while the tray c moves along the straight path, it contacts the preceding tray and the following tray After coming into contact with the saucer and passing under the nozzle blocks b1 and b2, the speed is gradually increased until it enters the curved paths B1 and B2, so that the saucer c can maintain an appropriate distance from the front and rear saucers.

On the other hand, a viscous liquid prepared by adding and mixing sulfuric acid, formalin, and a pore-forming aid to an aqueous polyvinyl alcohol solution was transferred from a common tank to the nozzle block b1,
b2, and the desired amount is made to continuously flow down from the nozzle blocks b1 and b2. When the saucer c passes under the nozzle block b1,
The viscous liquid is supplied from the nozzle block b1, and the paper passes through the curved path B1, and as it passes near the paper supply table 2, it is automatically or manually supplied with Japanese paper from the opening space of the cover 7, and then the paper is supplied to the nozzle block b2.
When passing under the nozzle block b2, the viscous liquid is supplied from the nozzle block b2, and when passing near the cloth supply table 3, the cloth is automatically or manually supplied from the opening space of the cover 7, and this operation is repeated several times. Repeat several times. When the tray c passes directly under the nozzle block b1, it is in close contact with the front and rear trays, and in particular is directed to the center in the traveling direction by the apron roller 13.
Furthermore, since the speed is adjusted by the apron roller 13, the relationship between the front and back of the saucer becomes closer, and the liquid layer passes at an extremely accurate constant speed, so that the thickness of the liquid layer in the saucer c becomes extremely uniform. Then, after a certain period of time has passed, the Japanese paper reaches just below the paper supply table, and at a suitable place where the thickness of the liquid layer has become uniform due to its own weight, the Japanese paper is placed on the liquid surface, and the paper is transferred from the paper supply table 2 to the next nozzle block b2. Until now, due to the slight vibration of the drive roller member 1 of the conveyor a, the washi paper was not deposited on the liquid surface, but it was brought into closer contact with the liquid surface. The operations etc. in the nozzle block b2 are the same as those in the nozzle block b1, and the operations etc. from the nozzle block b2 to the cloth supply table 3 are the same as those from the nozzle block b1 to the paper supply table 2. The operations from paper feed table 3 to nozzle block b1 are the same as those from paper supply table 2 to nozzle block b2. In this case, the multiple laminate of viscous liquid becomes a multiple laminate of uniform liquid layers 17 sandwiching Japanese paper 15 and cloth 16 alternately, as shown in an enlarged view in FIG. however,
In this laminated body device, nozzle blocks b1 and b2
Since the tank for supplying viscous liquid is common, and there is only one perforated plate d for flowing down, the color of the multi-layered product is the same, and there is little variation in product quality, resulting in poor fashionability. I hated chipping.

(Objective of the Invention) This invention has been made in view of the above-mentioned circumstances, and provides a multi-laminate with high fashionability by adding a pattern to the multi-laminate, which is laminated with a core material in between. The purpose is to propose possible manufacturing methods.

(Summary of the Invention) This invention allows a certain amount of viscous liquid to flow down at a predetermined timing from a first nozzle onto a rotating saucer mounted on an annular conveyor, and a core material is placed on the liquid surface. , a uniform multi-layered structure in which a certain amount of viscous liquid flows down from a second nozzle at a predetermined timing, a separator is placed on top of the liquid, and each of the above operations is sequentially repeated to sandwich the core material between each liquid layer. This method relates to a method for manufacturing a body, in which the first or second nozzle is arranged in multiple stages, the color of the viscous liquid flowing down at each stage is different, and the flow position of each stage is adjusted in the direction of movement of the saucer. The laminates are made to have different patterns to produce a patterned laminate.

(Embodiments of the Invention) In this invention, in order to add a pattern (straight line pattern) to a laminate, one nozzle block is divided into three nozzles 20 to 22 and arranged as shown in FIG. The viscous liquid is supplied to each nozzle 20-22 from a different tank 30-32. At the same time, the colors of the viscous liquids to be put into the tanks 30 to 32 are made different such as A white, B color, and C color, and furthermore, the flow positions of the viscous liquids from the nozzles 20 to 22 are shifted from each other. For example, as shown in the figure, the nozzle 22 has a downstream area extending from both ends to a length L1, and the nozzle 21 has a downstream area extending from both ends to a length L1.
The length from 1 to L2 is the downstream area, and nozzle 2
0, the flow area is the part obtained by subtracting the length L2 from both ends. In this way, by providing a plurality of nozzles that cause the viscous liquid to flow down into the saucer c, making the color of the viscous liquid from each nozzle different, and shifting the flow down position to prevent them from overlapping, the stacked body It can be manufactured in three colors and with a linear pattern. FIG. 6 shows an example of a manufactured laminate, which is patterned in three colors. This makes it possible to produce a multi-laminate with a pattern that is colorful and rich in fashionability.

In the embodiment shown in FIG. 2, a pair of nozzle blocks are provided on the annular conveyor a, but the number of blocks may be one pair, or even two or more pairs. In addition, in the above, the flow position of the viscous liquid from each nozzle is shifted so that they do not overlap, but it is not necessarily necessary to shift the flow position, and the color can be adjusted by mixing viscous liquids of different colors. You may also let them do so. moreover,
In the above description, the number of nozzles is three and three colors of viscous liquid are made to flow down, but the number of nozzles and the number of colors of viscous liquid can be changed arbitrarily. Furthermore,
The downstream position of the viscous liquid from each nozzle can also be changed as appropriate.

(Effects of the Invention) As described above, according to the method for producing a multi-laminate of the present invention, it is possible to add a pattern to the laminate that is laminated with the core material in between, so it is possible to create a colorful and highly fashionable laminate. The laminate can be widely provided to the market.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an example of a device for explaining the conventional manufacturing method, Fig. 2 is a partially cutaway front view showing an enlarged view of the vicinity of the viscous liquid supply device, and Fig. 3 is a conventional nozzle. 4 is a schematic diagram showing an example of a laminate manufacturing apparatus, FIG. 5 is a schematic diagram showing an example of a nozzle block for realizing the method of the present invention, and FIG. 6 is a schematic diagram showing an example of a nozzle block for realizing the method of the present invention. FIG. 3 is a plan view showing an example of a manufactured multilayer body. 1... Drive roller member, 2... Japanese paper supply stand, 3
...Cloth supply stand, 4-6...Frame member, 7...
Transparent cover, 9 to 11... Side wall, 13, 14...
Apron roller, b1-b4... nozzle block, a... annular conveyor, 20-22... nozzle, 30-32... tank.

Claims (1)

[Claims] 1 A certain amount of viscous liquid is flowed down at a predetermined timing from a first nozzle onto a rotating saucer mounted on an annular conveyor, and a core material is placed on the liquid surface,
A uniform multi-layered product in which a certain amount of viscous liquid flows down from a second nozzle at a predetermined timing, a separator is placed on top of the viscous liquid, and each of the above operations is sequentially repeated to sandwich the core material between each liquid layer. In the method for manufacturing, the first or second nozzle is arranged in multiple stages, the color of the viscous liquid flowing down at each stage is different, and the flow position of each stage is adjusted with respect to the moving direction of the saucer. A method for manufacturing a patterned multi-laminate, characterized in that the patterned multi-laminate is made to have different values.