JPS6131253A - Manufacture of uniform multiple laminate - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a method for manufacturing a uniform multi-layered body comprising a viscous liquid and a core material.

(Technical background of the invention and its problems) As a rational method for producing a chamois-like sheet made of a polyvinyl acetal porous material, for example,
There is something shown in the B-17284 bulletin. In this method, a viscous stock solution prepared 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. After a while, pour the viscous stock solution over it again, then place a separator (Japanese paper or similar separator) that has poor adhesion to polyvinyl acetal, and repeat the above steps. Repeatedly, a multiple laminate of polyvinyl acetal sponge stock solution containing core materials and separators alternately 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, this operation is 1
Although it is a big improvement over the method of creating sheets one layer at a time in that several or dozens of layers can be made in one container,
Everything had to be done by hand, so it wasn't enough.

As a device that solved these drawbacks, for example, the
There is one shown in Publication No. 8-38830. This device has a structure as shown in FIGS. 1 and 2, and an annular conveyor a is provided so as to make one circuit through a straight path 'AI, a curved path Bl, a straight path ^2, and a curved path B2. Furthermore, in the example shown in FIG.
It is composed of 1°l,... Nozzle blows 2 bl and b2 are provided at the upper center of the straight paths AI and A2 to supply viscous liquid from one tank, respectively, and a Japanese paper supply table is provided above near the end of the curved path B1 to supply the separator. 2 and above near the end of the straight path A2, there is provided a fabric supply table 3 on which a core material is placed. As shown in FIG. 2, the drive roller member l of the annular conveyor a is rotatably supported by appropriate frame members 4 to 6, and is rotationally driven by a motor (not shown) via respective sprocket wheels, chains, etc. A specific roller member is driven to rotate regularly and at a desired circumferential speed. And a circular conveyor a
is equipped with a transparent cover 7 made of synthetic resin that does not impede the transfer speed of the tray C and the rotational movement of the roller member I.

This cover 7 is provided over almost the entire area of the annular conveyor a, but the vicinity of the Japanese paper supply table 2 and cloth supply table 3 constitutes a space sufficient to supply Japanese paper and cloth to the tray C from the outside. It is open for the purpose. Straight path AI and A
The nozzle blocks bl and b2 for supplying viscous liquid installed across and above the tray C have a large number of orifices uniformly drilled across the width so that the nozzle blocks bl and b2 have an effective working width that is approximately equal to the width of the saucer C. It has a perforated plate on its lower surface. As shown in FIG. 2, the saucer C has one side wall 8.
is inclined outward, and the other side walls 9 to 11 are provided almost vertically, and the overall shape is a low rectangular box with an upper opening. Several reinforcing ribs 12 are provided on the lower surface of the bottom in the direction of travel. It is set horizontally. In addition, nozzle blocks bl and b2
Directly below, there is a route directly below each other,
It comprises two endless belt-shaped apron rollers 13, 13 and 14.14 which are driven with a surface speed smaller than the surface speed of the roller members of the conveyor in the vicinity thereof. These apron rollers 13, 13, and 14.14 contact the outer surfaces of the side surfaces 9 and 11 of the saucer C, which pass over a length of approximately 1.5 to 2.0 times the length of the side surface 9.11 of the saucer C in the direction of travel. They are arranged opposite to each other at an interval approximately equal to the width of the saucer C passing between them, and contact the outer surfaces of the side surfaces 9 and 11 of the saucer C passing between them. Sandwiching the saucer C, adjusting the center position of the saucer C in the direction of movement, and temporarily adjusting the speed of the saucer C, making the contact between the preceding saucer and the following saucer closer in this area, In addition, the passing speed of the tray C is kept constant even more accurately.

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 l 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 l 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 a certain group and driven by a sprocket or the like so that each drive roller member 1 reaches a desired speed. That is, the saucer C follows the straight path At
The speed is gradually decelerated until it approaches the nozzle blow bl and on the straight path A2 until it approaches the nozzle block b2, and while the pan C moves along the straight path, it contacts the preceding pan, is contacted by the succeeding pan, and vice versa. After passing under the nozzle blocks bl and b2, the speed is gradually increased until entering 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 obtained by adding and mixing sulfuric acid, formalin, and a pore-forming aid to a polyvinyl alcohol aqueous solution is introduced into the nozzle blocks bl and b2 from a common tank, and the desired amount is continuously flowed from the nozzle blow 2 blocks bl and b2. I'll try to force it.

When the saucer C passes under the nozzle block bl, it is supplied with viscous liquid from the nozzle block bl, and then passes through the curved path Bl and is automatically supplied from the opening space of the cover 7 when passing near the paper supply tray 2. 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 paper is supplied automatically from the M opening M11B of the cover 7. Alternatively, the cloth is fed manually and this operation is repeated 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, the apron roller 13 directs it to the center in the direction of movement, and its speed is adjusted by the apron roller 13. The liquid layer C is closely spaced and passes at a very precise and constant speed, so 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 point 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 from paper supply table 2 to the next nozzle block b2. Due to the slight movement of the drive roller member 1 of the conveyor a, the washi paper does not settle on the liquid surface and adheres to the liquid surface better than before. The action, etc. in nozzle blow 7 b2 is performed by nozzle block b1.
The operations 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, and the operations from the cloth supply table 3 to the nozzle block bl are also the same as those from the nozzle block b1 to the paper supply table 2. The operation is the same as that from the paper supply table 2 to the nozzle block b2. In this case, the multilayered body of viscous liquid consists of 15 sheets of Japanese paper, as shown in an enlarged view in FIG.
．． This results in a multi-layered body of uniform liquid layers 17 with cloths 16 alternately sandwiched between them. However, in this laminate device, since the tank for supplying viscous liquid to the nozzle blocks bl and b2 is common, the colors of the multi-layer laminates are all the same, resulting in little variation as a product and a lack of fashionability. was there.

FIG. 4 shows an example in which conventional devices are installed in two stages on an annular conveyor a, with a core material supply device 21 provided between nozzle blocks b1 and b2, and a core material supply device 21 provided between nozzles b2 and b3. A separator supply device 22 is provided in the nozzle block b3.
A core material supply device 23 is provided between the nozzle blocks b4 and b4, and a separator supply device 24 is provided between the nozzle blocks b4 and bl, so that two sets of uniform multiple laminates are formed around the annular conveyor a. ing. However, even in this device, the viscous liquid is supplied from the common tank 20 to the nozzle blocks bl to b.
4, the color of the formed multi-layered product is the same on both sides, and there is a drawback that a laminate with rich fashionability cannot be manufactured.

(Object of the invention) This invention was made under the above circumstances,
The purpose of this invention is to propose a manufacturing method that can supply a multi-layered product with rich fashionability by varying the colors of the multi-layered product that is stacked with a core material in between.

(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 relates to a method for manufacturing a laminate with different colors on both sides by making the color of the viscous liquid flowing down from a first nozzle different from the color of the viscous liquid flowing down from a second nozzle. '

(Embodiment of the invention) In this invention, the colors of the viscous liquids stacked with the core material in between are made to differ from each other, and t! FIG. 145 shows an apparatus for implementing the method, corresponding to FIG. 4. That is, the viscous liquid of color A is supplied from the tank 30 to the nozzle blocks bl and b3, and the viscous liquid of color B is supplied from the tank 20 to the nozzle blocks b2 and b4 arranged at mutually different phase positions. supply from In this way, the supply section is divided into tanks 20 and 30, and the viscous liquid is divided into two different colors, A and A.
By using the B color, the colors of the laminates stacked on the saucer C on the annular compare a are formed in A and B colors that are different from each other with the core material 15 in between. In other words, it is possible to create a laminate with different colors on the front and back sides. This makes it possible to produce a multilayered product that is colorful and rich in fussibility.

In addition, in the embodiment shown in FIG. 5, two sets of nozzle blocks, one pair each, are provided on the annular conveyor a, but the number of blocks may be one pair, or even three or more pairs. Also good.

(Effects of the Invention) As described above, according to the method for producing a multi-layered product of the present invention, the colors of the layered products stacked with the core material in between are different from each other, so the product is colorful and fashionable. 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 plan view showing an example of a device for explaining the conventional manufacturing method. A cross-sectional structural diagram of the laminate; FIG. 4 is a schematic diagram showing an example of a laminate manufacturing apparatus;
FIG. 5 is a schematic diagram showing an example of an apparatus for realizing the method of the present invention, and FIG. 6 is a cross-sectional structural diagram of a multilayered body produced by the method of the present invention. l... Drive roller member, 2... Japanese paper supply stand, 3...
・Cloth supply stand, 4-6... Frame member, 7... Transparent cover, 9-11... Side wall, 13.14... Apron roller, bl-b4... Nozzle block, annular for a Conveyor, 20.30...tank. Applicant's agent Yu Yasugata Third figure 2 Figure JL3F2 4th Yuen 5 Figures 1 & 6

Claims (3)

[Claims] (1) A certain amount of viscous liquid flows down from the first nozzle at a predetermined timing onto a rotating saucer mounted on an annular conveyor, the core material is placed on the liquid surface, and the second nozzle In a method for manufacturing a uniform multi-layered body, which comprises dropping a certain amount of viscous liquid at a predetermined timing, placing a separator on top of the liquid, and repeating each of the above operations in sequence to sandwich the core material between each liquid layer. , by making the color of the viscous liquid flowing down from the first nozzle different from the color of the viscous liquid flowing down from the second nozzle, a laminate with different colors on the front and back sides is manufactured. A method for producing a uniform multilayered product characterized by: (2) The method for manufacturing a uniform multi-layered product according to claim 1, wherein the first nozzle and the second nozzle are alternately arranged in two or more stages on the annular conveyor. (3) The method for manufacturing a uniform multi-layered product according to claim 1, wherein the core material is cheesecloth.