JP2003020599A - Male mold for producing fibrous holding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a male mold for producing fibrous moldings, capable of keeping wide opening area without injuring mechanical strength, so obtaining high drainage efficiency and easily performing maintenances such as removing fiber. SOLUTION: This male mold is used with a female mold 3 having a concave portion 30 where a fiber laminate is set, and is used when pressing the fiber laminate set on the concave portion 30. The male mold has at lest one pushing element 20 capable of being elastically deformed and for pressing the fiber laminate in the concave portion 30, the pushing element has many liquid flow holes 200 for draining water in the fiber laminate from the inside to the outside thereof and the liquid flow holes 200 are characterized by including aslant openings 200a slantly opening to the outer surface 20a of the pushing part 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a male mold for producing a fiber molded body, a mold for producing a fiber molded body having the male mold, and a mold used for producing the male mold.

[0002]

2. Description of the Related Art As a conventional technique relating to a mold for producing a pulp mold molded body, for example, a papermaking mold for producing a pulp mold molded body described in JP 2001-55699 A is known. There is.

This papermaking mold has a core having a predetermined shape, which is made of an elastically deformable material and has a plurality of fluid passage holes communicating from the outside to the inside, and a fluid permeable material for covering the outer surface of the core. The fluid permeable material has a flow passage for the fluid even when the fluid permeable material is pressed and deformed, and has excellent surface smoothness. Although it is possible to easily produce a molded body having an appearance, a wide opening area can be secured without impairing the strength of the core, high drainage efficiency can be obtained, and fibers such as fibers clogged in the core can be obtained. There has been a demand for a papermaking mold that facilitates maintenance such as removal.

Therefore, according to the present invention, a male mold for producing a fiber molding can be obtained which can secure a wide opening area without impairing the strength, can obtain a high drainage efficiency, and can easily perform maintenance such as fiber removal. An object of the present invention is to provide a mold for producing a fiber molded body having the male mold and a mold for manufacturing the male mold.

[0005]

The present invention is a male mold used with a female mold having a recess in which a fiber laminate is arranged, and used when pressing the fiber laminate arranged in the recess. , One or more elastically deformable pressing bodies that press the fiber laminated body in the recesses, and the pressing body has a large number of fluid circulation holes that pass from the inside to the outside to drain the moisture of the fiber laminated body. And has the fluid flow hole,
The above object is achieved by providing a male mold for producing a fiber molded body, which has an opening that is opened obliquely with respect to the outer surface of the pressing body.

Further, the present invention is directed to the production of a fiber molded article including a male die for producing the fiber molded article of the present invention, and a female die made of a rigid material and having a recess corresponding to the pressing body. In the mold, the fluid circulation hole is formed such that the volume thereof is larger than the volume change of the pressing body when the fiber laminate is press-molded between the pressing body and the recess. The above object is achieved by providing a production mold for a fiber molded body.

Further, the present invention is a molding die used in the production of the male mold for producing the fiber molding of the present invention, wherein the frame has a concave portion corresponding to the outer shape of the pressing body, and the fluid flow. The object has been achieved by providing a mold having a core arranged in the recess so as to correspond to the hole.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will now be described based on its preferred embodiments with reference to the drawings.

FIG. 1 shows a mold for producing the fiber molding of the present invention.
1 shows an embodiment applied to a manufacturing mold for cup-shaped and bowl-shaped pulp-molded food containers. In the figure, reference numeral 1 indicates a manufacturing type.

The manufacturing mold 1 is a male mold 2 for papermaking and dehydration molding.
And pressing bodies 20 and 2 which are made of a rigid material and will be described later.
1 and the female mold 3 having the recesses 30 and 31 respectively corresponding thereto.

The male mold 2 is provided with four types of pressing bodies of two types, a pressing body 20 corresponding to a cup-shaped container shape and a pressing body 21 corresponding to a bowl-shaped container shape (only two are shown in FIG. 1). ing. Further, the male mold 2 includes the pressing bodies 20,
A base 22 for fixing 21 and fluid-permeable materials 23, 24 for covering the outer surfaces of these pressing bodies are provided. In addition,
The pressing bodies 20 and 21 have the same basic configuration except that the outer shapes thereof are different. Therefore, in the following description, the pressing bodies 20 and 21 will be described.
Will be described, and description of the pressing body 21 will be omitted.

The pressing body 20 is made of an elastically deformable material and has a large number of fluid circulation holes 20 communicating from the inside to the outside.
Has 0. As shown in FIGS. 1 and 2, the pressing body 2
0 is formed in a tapered shape as it goes to the tip, and a hollow chamber 201 that opens upward from the inside is formed in the approximate center thereof.

The fluid passage hole 200 is formed in a straight line so as to communicate with the outside from the hollow chamber 201. Male 2
During use, the hollow chamber 201 is connected to a pipe line (not shown) leading to a vacuum pump or a compressor via the flow hole 220 of the base 22.

The fluid passage hole 200 is formed so as to extend horizontally from the peripheral portion of the hollow chamber 201.
It is formed so as to spread radially from the bottom portion of the above, and each has an opening portion 200a that is opened obliquely with respect to the outer surface 20a of the pressing body 20. In this specification, opening obliquely with respect to the outer surface of the pressing body means opening in a direction other than the direction normal to the outer surface of the pressing body. The preferred opening direction of the opening 200a with respect to the outer surface 20a of the pressing body 20 is set according to the volume change (elastic contraction) of the pressing body 20 when the pressing body 20 is pressed. The fluid passage hole 200 formed in this way has a small cross-sectional area inside the pressing body 20, and the outer surface 2 of the pressing body 20 is suppressed.
The opening area is wide at 0a (for example, when the fluid circulation hole 200 has a circular cross section, the opening has a substantially elliptical shape). As a result, in a state where the pressing body 20 is not elastically deformed, the opening portion 200a is widely secured, the drainage efficiency at the time of papermaking can be improved, and the fluid circulation hole 2
00 can be easily cleaned.

The total volume of the fluid flow hole 200 is a volume change of the pressing body 20 when the fiber laminate is dehydrated (press molded) between the pressing body 20 and the concave portion 30 of the female die 3 as described later. It is formed so as to be larger than the (elastic contraction amount), and in combination with the form of the fluid circulation hole described above, the pressing body 2
The drainage path is sufficiently secured in the pressed state of 0.

The cross-sectional area of the fluid circulation hole 200 is 7.8 from the viewpoint of the suction efficiency of the slurry during papermaking of the fiber laminate, the dehydration efficiency during dehydration, and the strength when the pressing body presses the fiber laminate during dehydration. It is preferably × 10 ^{−3 to} 1.26 cm ² , and more preferably 0.03 to 0.1 cm ² . From the same point of view, the fluid circulation hole is similar to the pressing body 2.
1 to 20 openings per 4 cm ^{2 on} the outer surface of 0,
It is particularly preferable to provide 5 to 10 pieces.

The pressing body 20 has an outer shape slightly smaller than the outer shape of the container to be molded, and is formed so that its height is larger than the height (depth) of the food container to be molded. The flange portion 20 is provided above the circumferential surface of the pressing body 20.
2 is formed.

As shown in FIG. 2, the outer surface 20 of the pressing body 20.
Flow grooves 203 are formed in a in a grid shape so as to connect the openings 200a of the fluid flow holes 200, and during dehydration, the fluid is guided to the openings 200a through the flow grooves 203 to efficiently perform papermaking and dehydration. It can be done well.

The pressing body 20 may be made of an elastically deformable material without any particular limitation. From the viewpoint of durability and heat resistance, natural rubber, urethane, fluorine rubber, silicone rubber, elastomer or the like synthetic material is used. It is preferable to use an elastic material made of rubber.

The base 22 shown in FIG. 1 is made of a rigid material. A flow passage 220 communicating with the hollow chamber 201 is formed in the base 22. Although not shown in the drawing, the side surface of the base 22 is provided with an engagement recess used when the male die 2 is moved, rotated (reversed) or the like by a handling robot or the like.

As shown in FIG. 1, the fluid permeable material 2
Since 3 and 24 have the same configuration except that the form is different, in the following description, only the fluid permeable material 23 will be described, and the description of the fluid permeable material 24 will be omitted.
The fluid permeable material 23 has a bag-like form for accommodating the pressing bodies 20 and 21, and tightly covers the pressing body 20 on the outer surface 20a. The fluid permeable material 23 covers a covering member 223 described later. The fluid permeable material 23 is
From the viewpoint of water absorption, air permeability and strength, it is preferable that the average open area ratio is 10 to 80%, particularly 20 to 40% when the outer surface 20a of the pressing body 20 is tightly covered.
Further, the fluid permeable material 23 is formed on the outer surface 20a of the pressing body 20.
Has a stretchability (stretchability) of 5 to 50
%, Particularly preferably 10 to 30%. further,
The fluid-permeable material 23 has an average maximum aperture width of 0.1 to 0.1 in order to reliably perform papermaking of the fiber laminate while suppressing passage of solid components in the fiber slurry and clogging of the fluid-permeable material 23. It is preferably 1.5 mm, and 0.3 to
It is more preferably 1.0 mm.

In the male mold 2, the fluid permeable material 23
Functions as a papermaking net when forming a fiber laminate. Therefore, the fluid permeable material 23 has a mesh that allows moisture in the fiber slurry to pass through but does not allow fibers to pass through. The size of this mesh is 20 to 100 mesh, especially 4
It is preferably 0 to 60 mesh from the viewpoint of moldability of the fiber laminate and prevention of fiber clogging.

Considering the above points comprehensively, the fluid permeable material 23 has sufficient stretchability (shrinkability) corresponding to the elastic deformation of the pressing body, water permeability, air permeability, and fiber papermaking property. As long as it is one, its form and material are not particularly limited, but it has a form such as a knitted fabric, woven fabric and non-woven fabric, natural fiber,
Materials such as synthetic fiber materials and metal materials are mentioned, and it is particularly preferable to use a knitted fabric made of synthetic resin fibers from the viewpoint of stretchability (stretchability).

The pressing body 20 has a ring-shaped metal pressing member 221 disposed so as to cover the flange portion 202,
The pressing member 221 is fixed to the base 22 by fixing it to a predetermined position on the lower surface of the base 22 with a bolt 222. The pressing member 221 is covered with a covering member 223 made of silicone resin.

In the state where the male mold 2 is assembled,
The flow hole 220, the hollow chamber 201, the fluid flow hole 200,
And the fluid permeable material 23 communicates with each other to form a flow passage communicating from the outside to the inside of the male mold 2. In the male mold 2, the suction force also acts on the portion of the fluid permeable material 23 that covers the covering member 223, so that the fiber layer is formed into paper. Then, this fiber layer is continuous with the fiber layer that is formed on the portion of the fluid permeable material 23 that covers the outer surface 20a of the pressing body 20, so that a cup-shaped fiber formed body having a flange portion as a whole is formed. ing.

The female die 3 is made of a rigid material,
It has recesses 30 and 31 in which the fiber laminate is arranged. The inner surface shape of the concave portions 30 and 31 is a shape corresponding to the outer shape of the molded body to be molded. A heating means such as a heater is provided inside the female die 3. Female 3
When it is desired to shorten the dehydration time and the drying time, the recess 3
It is preferable that a fluid flow hole that is open on the inner surface of 0, 31 and connects the recesses 30, 31 to the outside is provided. The female die 3 is preferably formed integrally from the viewpoint of handleability, but when the concave shape becomes complicated, a plurality of split dies are used in combination. It is preferable.

Next, a method of using the manufacturing mold of the present invention will be described with reference to FIG. 3 based on an embodiment in which the manufacturing mold 1 is applied to a method of manufacturing a heat insulating container. In addition, since the heat insulating container has a configuration including an outer pulp layer, an inner pulp layer, and a foaming agent layer between them as described later, in the present embodiment, the manufacturing mold 1 has two layers corresponding to these layers. A male mold provided with a pressing body having various types of outer shapes (in the following description, a mold used for papermaking of the outer pulp layer is a male mold 2 and a mold used for papermaking of the inner pulp layer is a male mold 2 '). Use what you have. Further, in FIG. 3, each male mold is provided with only one pressing body, and the female mold is schematically shown with a form having a corresponding recess.

As shown in FIGS. 3 (a) and 3 (c), in the method of manufacturing the heat insulating container of this embodiment, first, the outer pulp layer (fiber laminate) 11 and the inner pulp layer (fiber laminate).
12 are individually made in male molds 2, 2 '.

The outer pulp layer 11 and the inner pulp layer 12 are formed by immersing the male molds 2 and 2'in pools P1 and P2 in which the slurry for each pulp layer is filled, and then, the fluid circulation holes (not shown). The slurry is sucked through and the pulp fibers are paper-made with the fluid-permeable material (not shown), so that the outer surface of the fluid-permeable material of each male mold 2, 2 ′ is wet-processed.

The slurry used for forming each pulp layer is preferably a slurry composed of only pulp fibers and water. In addition to pulp fibers and water, inorganic substances such as talc and kaolinite, inorganic fibers such as glass fibers and carbon fibers, thermoplastic synthetic resin powders or fibers such as polyolefins, non-wood or vegetable fibers, polysaccharides, etc. You may contain the component. The blending amount of these components is 1 to 70% by weight, particularly 5 to 50% by weight based on the total amount of pulp fibers and the components.
It is preferably in the weight%. In addition, a dispersant for pulp fibers, a molding aid, a coloring agent, a coloring aid, and the like can be appropriately added to the slurry. In addition, a sizing agent, a pigment, a fixing agent and the like can be appropriately added to the slurry.
In particular, when the outer pulp layer 11 dried to a predetermined water content and the inner pulp layer 12 in a wet state are integrated by adding a sizing agent, the outer pulp layer 11 has a moisture content of the inner pulp layer 12. Can be prevented from being absorbed, and appearance defects such as stains can be prevented from occurring on the outer surface of the outer pulp layer 11.

The outer pulp layer 11 is formed from the viewpoint that the foaming agent can be efficiently foamed to form the foaming agent layer.
Prior to stacking with, it is dried and densified in advance. Specifically, after the papermaking for a predetermined time, the male mold 2 is pulled out from the slurry and abutted against the female mold 3 as shown in FIG.

When the male die 2 and the female die 3 are butted,
The bottom portion of the outer pulp layer 11 first contacts the bottom portion of the concave portion 30 of the female mold 3. Then, the male die 2 is pressed with a predetermined pressure. For the pressing, the base 22 of the male mold 2 is pressed by a predetermined pressing means. As described above, since the pressing body 20 is made of an elastically deformable material, the pressing body 20 is uniformly pressed by pressing the base 22.

By this pressing, the pressing body 2 in the male mold 2
0 deforms so as to follow the shape of the recess 30 of the female die 3 and completely fills the space of the recess 30. As a result, the outer pulp layer 11 formed on the surface of the male mold 2 is further pressurized and dehydrated,
Moreover, the inner surface shape of the recess 30 is transferred to the outer pulp layer 11. Further, the outer pulp layer 11 formed on the lower surface side of the covering member 223 is sandwiched between the lower surface and the upper surface of the female mold 3 and pressed. This portion becomes a flange portion of the obtained outer pulp layer 11. The pressing force at the time of dehydration / drying of the outer pulp layer 11 is from the viewpoint of increasing the dehydration efficiency and increasing the density.
It is preferably 0.2 to 3 MPa, and 0.3 to 1.
It is more preferably 5 MPa. In addition, the mold temperature (temperature of the female mold 3) during drying of the outer pulp layer 11 is 150 to 150 in terms of prevention of charring due to drying, drying efficiency, and the like.
It is preferably 230 ° C, and more preferably 170 to 220 ° C.

While maintaining the pressed state by the male mold 2 described above,
Moisture in the outer pulp layer 11 is sucked through the fluid circulation hole 200 in the male mold 2. As described above, the opening portion 200a of the fluid circulation hole 200 on the outer surface of the pressing body 20.
Can circulate the fluid without being crushed even when the pressing body 20 is pressed and the fluid permeable material 23 that covers the outer surface of the pressing body 20 can be circulated. The moisture contained in the inside of the fluid permeable material 23 and the pressing body 20 (that is, the fluid flow hole 200 formed in the pressing body 20 and the hollow chamber 20).
It is discharged to the outside of the male mold 2 through 1). Outer pulp layer 11
The water vapor generated by the drying of is also discharged to the outside of the male mold 2 through the same route.

When the pressing of the male mold 2 is stopped when the desired outer pulp layer 11 is obtained, the pressing body 20 elastically returns to the shape before pressing, and the obtained outer pulp layer 11 is removed from the surface of the pressing body 20. The mold is released smoothly and stays in the recess 30 of the female mold 3. After the outer pulp layer 11 is transferred from the male mold 2 to the female mold 3, the male mold 2 is evacuated, and the outer pulp layer (FIG. 3 (a)).
It is transferred to the paper making process of No. 3 and used repeatedly.

While the outer pulp layer 11 is densified as described above, the outer surface of the inner pulp layer 12 is covered with a foaming agent. For example, as shown in FIG. 3 (d), the covering with the foaming agent is a male mold 2 ′ in which the inner pulp layer 12 is made into paper in a pool P 3 in which a solution containing the foaming agent (dispersion solution or dissolution solution of the foaming agent) is filled.
Can be carried out by impregnating the outer surface of the inner pulp layer 12 with the liquid.

The foaming agent has a foaming temperature of 10 in order to prevent charring of pulp fibers in the pulp layer due to heat foaming.
The thing of 0-190 degreeC is preferable, and the thing of 110-160 degreeC is more preferable. Examples of the foaming agent having such a foaming temperature and dispersibility in water or slurry include a microcapsule type foaming agent, a foaming resin, and the like, and among these, particularly in terms of foaming ratio, handleability, and the like. Microcapsule type foaming agents are preferably used. The microcapsule type foaming agent, for example, the content is butane, pentane, etc.,
A microcapsule type foaming agent whose outer skin is vinylidene chloride, acrylonitrile or the like is preferably used.

The amount of the foaming agent is preferably 1 to 20% by weight based on the total weight of the heat insulating container in view of the density and thickness of the foaming agent layer, the manufacturing cost and the like. It is more preferably 3 to 10% by weight.

Next, the outer pulp layer 11 and the inner pulp layer 12 are laminated so that the foaming agent layer is located between the outer pulp layer 11 and the inner pulp layer 12. That is, as shown in FIG. 3 (e), the inner pulp layer 12 impregnated with the foaming agent is overlaid on the dehydrated and dried outer pulp layer 11 arranged in the female mold 3. At this time, the inner pulp layer 12 is not demolded from the male mold 2 ′, but the male mold 2 ′ is directly butted to the female mold 3.

When the male mold 2'and the female mold 3 are butted against each other, the bottom of the inner pulp layer 12 first contacts the bottom of the outer pulp layer 11 in the recess 30 of the female mold 3. The pressing of the male mold 2 ′ can be performed by pressing the base 22 ′ similarly to the male mold 2. Inner pulp layer 12 and outer pulp layer 1
From the viewpoint of increasing the dehydration efficiency of the inner pulp layer 12 to combine the inner pulp layer and the outer pulp layer, the pressing force when stacking 1 is preferably 0.1 to 1.5 MPa,
More preferably, it is 0.2 to 1.0 MPa.

By this pressing, the pressing body 20 in the male die 2 ′ is deformed by pressing so as to follow the shape of the concave portion of the female die 3 as in the pressing body 20 of the male die 2.
It completely fills the space of 0. As a result, the inner pulp layer 12 formed on the surface of the male mold 2 ′ is pressed against the outer pulp layer 11 to form a synthetic body, and the inner surface shape of the recess 30 is accurately transferred to the outer pulp layer 11. The inner pulp layer 12 formed on the lower surface side of the covering member 223 is pressed and joined to the flange portion of the outer pulp layer 11 formed on the upper surface of the female mold 3. This portion becomes the flange portion of the obtained composite.

Moisture in the inner pulp layer 12 is sucked through the fluid flow holes in the male mold 2'while maintaining the pressed state in the male mold 2 '. Also in this case, as in the pressing body 20 of the male die 2, the opening of the fluid circulation hole on the outer surface of the pressing body 20 does not collapse even when the pressing body 20 is in the pressed state, and Since the fluid permeable material that coats the outer surface of the body 20 can also flow the fluid without being crushed, this suction causes the inner pulp layer 1
The moisture contained in 2 is the fluid permeable material and the pressing body 20.
Is discharged to the outside of the male mold 2 ′ through the inside (that is, the fluid circulation hole and the hollow chamber formed in the pressing body 20). Water vapor generated by drying the inner pulp layer 12 is also discharged to the outside of the male mold 2 ′ through the same route.

When the pressing of the male mold 2'is stopped when the desired pulp layer is obtained, the pressing body 20 elastically returns to the shape before pressing and the obtained synthetic body is smoothly separated from the surface of the pressing body 20. Mold and stay in the recess 30 of the female mold 3.
After synthesizing the inner pulp layer 12 and the outer pulp layer 11, a male mold 2 ′
Are evacuated, and the papermaking process of the inner pulp layer 12 (see FIG.
Transfer to (c)) and use repeatedly.

Next, as shown in FIG. 3 (f), a metallic male die 4 having a predetermined clearance C corresponding to the step of the heat insulating container is arranged and butted against the female die 3. This male type 4
Has a fluid passage hole (not shown) like the male mold, and also has a heating means (not shown). Then, the male mold 4 and the female mold 3 are heated by respective heating means to foam the foaming agent impregnated in the inner pulp layer 12 to lower the density of the foaming agent layer, and at the same time, the inner pulp layer 12
And the outer pulp layer 11 are integrated. Further, the flange portion of each pulp layer is joined and integrated by the pressing force during drying. An adhesive is preferably used for joining the flange portions in terms of increasing the adhesive strength, and particularly, an adhesive such as starch is preferably used for the food container.
During this time, the water in the inner pulp layer is drained to the outside through the fluid circulation hole of the male mold 4 as water vapor. The mold temperature at the time of drying is preferably 150 to 230 ° C. from the viewpoint of keeping the drying efficiency high while making the temperature above the foaming initiation temperature and preventing charring in each pulp layer.
More preferably, it is 220 ° C.

When the foaming agent foams to a predetermined expansion ratio and the inner pulp layer 12 is dried to a predetermined water content, heating and drying are terminated. Then, the heat insulating container 10 formed by opening the male mold 4 and the female mold 3 is released from the mold. After demolding the heat insulation container,
The female mold 3 is a dehydration / drying process for the outer pulp layer 11 (see FIG. 3).
Transfer to (b)) and use repeatedly. The obtained heat-insulating container is, if necessary, trimming treatment, vacuum forming, treatment for forming a resin layer on the inner surface or outer surface by pressure forming,
The manufacturing is completed by performing processing such as painting and printing.

As described above, in the manufacturing die of this embodiment, the opening of the fluid flow hole on the outer surface of the pressing body is formed so as to open obliquely with respect to the outer surface of the pressing body. The area can be kept low, and a large opening area can be secured on the outer surface of the pressing body. Therefore, a large opening area can be secured without impairing the strength of the pressing body, and high drainage efficiency can be obtained. In addition, since the opening is widely secured when the pressing body is not elastically deformed, The circulation holes can be easily cleaned.

Further, since the total volume of the fluid flow hole is larger than the volume change amount when the pressing body is pressed, the pressing body is elastically deformed in combination with the above-mentioned form of the fluid flow hole. Even in the state, the drainage route is sufficiently secured, and dehydration and drying can be efficiently performed.

In the male molds 2 and 2 ', by changing the form of the pressing bodies 20 and 20' attached to the bases 22 and 22 ', the form of the container to be manufactured can be promptly changed.

The manufacturing mold 1 is composed of male molds 2 and 2'and female molds 3.
Since it is possible to circulate a plurality of the same in various processes and use them repeatedly, even if the components of each mold (for example, the fluid permeable material) are damaged, the production is continued without stopping the entire apparatus. Therefore, the heat insulating container can be manufactured with high production efficiency.

Drainage during dehydration and drying is performed only in the male molds 2 and 2 ', and the female mold 3 has a fluid flow for discharging water and steam out of the mold during dehydration and drying. Since the holes are not formed, the outer surface of the obtained heat insulating container becomes smooth and the appearance becomes extremely good.

Next, as a preferred embodiment of the molding die of the present invention, the pressing body 20 used for the male die 2 is used.
It will be described based on the mold.

FIG. 4 shows a molding die used for manufacturing the male die 2. In FIG. 4, reference numeral 5 indicates a molding die.

As shown in FIG. 4, the molding die 5 has a frame body 50 having a recess 500 corresponding to the outer shape of the pressing body 20.
And a core 51 arranged in the recess 500 so as to correspond to the fluid circulation hole 200 of the pressing body 20.

The frame body 50 penetrates the frame body 50 in the extending direction corresponding to the fluid flow hole 200 of the pressing body 20, and a through hole 501 into which a branch core 511 described later is inserted.
Are formed in large numbers.

The core 51 is arranged substantially vertically (up and down) in the recess 500 corresponding to the hollow chamber of the pressing body 20, and the stem core 510 and the fluid distribution hole from the outer periphery of the stem core 510. A large number of branch cores 5 protruding at a predetermined angle corresponding to
11 and 11. The branch core 511 has a through hole 5
It is inserted in 01. The branch core 511 is taken in and out with a corresponding pin.

In this embodiment, the stem core 510 is the lid 52.
Is fixed to the lower surface of the by screwing. An injection hole for injecting the raw material of the pressing body 20 is formed in the lid body 52. The lid body 52 is attached to the frame body 50 so as to cover the recess 500 of the frame body 50, and the through hole 501 is further provided. Edako 51
By inserting 1 into contact with the outer surface of the stem core 510,
The molding die 5 is completed.

The raw material of the pressing body 20 is injected into the molding die 5 thus formed through the injection hole 520 of the lid. Then, after solidifying the raw material, the branch core 5
11 is removed from the stem core 510, and the lid 52 and the stem core 510 are removed. After the pressing body is separated from the frame body 50, the opening 20 is formed on the outer surface 20a of the pressing body 20.
The flow groove 203 is formed so as to connect 0a, and the molding of the pressing body 20 is completed.

The molding die 5 of this embodiment is provided with a through hole 501 corresponding to the fluid flow hole 200 of the pressing body 20 and penetrating the frame body 50 in the extending direction, and the through core 501 is formed in the through hole 501. 511 to insert the branch core 511 into the fluid flow hole 20.
Since the core corresponding to 0 is used, it is possible to accurately form the fluid circulation hole 200 in the elastic body, which was difficult in the cutting process.

The present invention is not limited to the above-described embodiments, but can be modified as appropriate without departing from the spirit of the present invention.

The male mold of the present invention preferably has a pressing body corresponding to two types of container shapes, that is, a cup shape and a bowl shape, as in the male mold 2 of the above-mentioned embodiment, but other forms are possible. It is also possible to provide a pressing body. Further, the number of pressing bodies included in the male die is not limited to four, and less than four and five or more pressing bodies can be provided, and the type of the pressing bodies included in the pressing die is one. It is also possible to use three or more types.

Further, in the male mold of the present invention, it is preferable to form the flow groove on the surface of the pressing body as in the above embodiment, but the flow groove can be omitted if necessary.

Further, as the production mold of the present invention, it is preferable to use the one in which the female mold 3 is provided with a heating means as in the above embodiment, but the drying after the dehydration of the fiber laminate is separated from the female mold 3. When molding is performed, the female mold does not have to include a heating means.

The molding die of the present invention preferably has a through hole 501 formed in the frame body 50 as in the above embodiment. For example, as shown in FIG. No through hole is formed, and the branch core 511 ′ is arranged so as to correspond to the fluid circulation hole 20 of the pressing body 20.
After the core 5'is assembled by being screwed to the core 10, the core 5'can be arranged in the recess 500 'of the frame 50'. In this case, since the core 51 ′ can be immediately separated from the frame 50 ′ together with the pressing body 20 and reused,
The pressing body 20 can be efficiently molded.

[0064]

EFFECTS OF THE INVENTION According to the present invention, a large opening area can be secured without impairing strength, high drainage efficiency can be obtained, and maintenance such as fiber removal can be easily performed. Provided are a male mold, a mold for producing a fiber molded body including the male mold, and a mold used for manufacturing the male mold.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view schematically showing an embodiment of a production mold for a fiber molded product of the present invention.

FIG. 2 is a perspective view schematically showing an embodiment of a pressing body used in the male mold for producing a fiber molded body of the present invention.

FIG. 3 is a diagram schematically showing a manufacturing process of a heat insulating container using the fiber mold manufacturing mold of the present invention, (a) showing a paper making process of an outer pulp layer, and (b) showing an outer pulp. The figure which shows the dehydration and drying process of a layer, (c) is a figure which shows the paper-making process of an inner pulp layer, (d) is a figure which shows the state which has covered the outer side of an inner pulp layer with a foaming agent. (E) is a figure which shows the uniting process of an outer pulp layer and an inner pulp layer, (f) is a figure which shows a drying process.

FIG. 4 is a partial cross-sectional view schematically showing an embodiment of the molding die of the present invention.

FIG. 5 is a partial cross-sectional view schematically showing another embodiment of the molding die of the present invention.

[Explanation of symbols]

1 Manufacturing type 2, 2'male 20, 21 Pressing body 200 fluid flow holes 23, 24 Fluid permeable material 3 female 5, 5'mold 50, 50 'frame 501 through hole 51, 51 'core

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Tokito Seno             Kao Stock Exchange 2606, Akabane, Kai-cho, Haga-gun, Tochigi Prefecture             Company research institute (72) Inventor Shinji Kodama             Kao Stock Exchange 2606, Akabane, Kai-cho, Haga-gun, Tochigi Prefecture             Company research institute (72) Inventor Naoki Imai             2-1-18 Ohama, Sakata City, Yamagata Prefecture Kao Stock Association             Company research institute F-term (reference) 4L055 CJ06 FA22 FA30 GA05 GA50

Claims (7)

[Claims] 1. A male mold which is used together with a female mold having a recess in which a fiber laminate is arranged, and which is used when pressing the fiber laminate arranged in the recess, wherein the fiber laminate is inside the recess. One or more elastically deformable pressing bodies that press the body are provided, and the pressing body has a large number of fluid circulation holes that communicate from the inside to the outside to discharge the moisture of the fiber laminated body, The flow hole has an opening portion that is opened obliquely with respect to the outer surface of the pressing body. 2. The male mold for producing a fiber molded body according to claim 1, wherein at least one of the plurality of pressing bodies has different outer shapes. 3. The male mold for producing a fiber molded body according to claim 1, further comprising a fluid-permeable material that coats an outer surface of the pressing body. 4. A fiber comprising a male mold for producing a fiber molded body according to claim 1, and a female mold made of a rigid material and having a recess for accommodating the fiber laminate. A mold for manufacturing a molded body, wherein the fluid flow hole is formed so that the volume thereof is larger than the volume change of the pressing body when the fiber laminate is pressed between the pressing body and the recess. Mold for manufacturing fiber moldings. 5. A molding die used for manufacturing the male mold for producing a fiber molded body according to claim 1, wherein the frame body has a concave portion corresponding to the outer shape of the pressing body, and the fluid flow hole. And a core which is correspondingly arranged in the recess. 6. The mold according to claim 5, wherein the core is formed of a stem core and a plurality of branch cores protruding from the stem core. 7. The frame body is formed with a through hole penetrating the frame body in a direction in which the frame body extends in a direction corresponding to the fluid flow hole and in which the branch core is inserted. The molding die according to item 6.