JP6960680B2 - Containment container, its manufacturing method and manufacturing equipment - Google Patents

Description

The present invention relates to a storage container that reduces foreign matter contamination of bacteria and other substances and has high cleanliness and safety, and a method and apparatus for producing the same.

Storage, reduction of distribution costs, and avoidance of storage and distribution accidents such as contamination with foreign substances are becoming a trend not only in Japan but also worldwide.

Various pharmaceuticals, industrial raw materials, food raw materials, etc. are contaminated and of quality due to contamination by bacteria and other foreign substances from the outside, regardless of whether they are harmless or harmful, in the process from storage, injection of raw materials to transportation, and discharge of raw materials. We must avoid the decline. Especially in recent years, strict quality and reliability are required, and once an accident resulting from it occurs, it is not uncommon for it to develop into a life-and-death problem for companies.

Therefore, quality requirements for the storage and transportation of various raw materials and materials are increasing day by day.

On the other hand, from the point of view of logistics, if materials such as foodstuffs and medicines can be stored in as large a transport container as possible such as a large tank and transported at one time, it is cheap and easy to manage. It has been widely practiced to inject and carry it as freight by truck, railroad, or ship. For example, taking raw milk as an example, it can be used repeatedly, and because of its ease of cleaning, it can be transported for ISO tank containers with a length of 20 ft or smaller lots according to the ISO standard, which is a relatively large lot. Containers are widely used. Further, as a method for saving the trouble of cleaning the tank container, for example, Japanese Patent Application Laid-Open No. 2005-239277 discloses various methods for providing an appropriate inner bag in the tank.

However, the inner bag in the conventional tank is mainly intended to eliminate the trouble of cleaning the inside of the tank, and the pressure resistance strength against the load of the contents depends on the strength of the tank itself. The bag itself did not always have strong strength.

Furthermore, for transport containers such as containers, in order to avoid contamination of contaminants such as bacteria from the outside when the raw materials are injected, cleaning the tank, hygiene of the person in charge of handling the raw materials, quality control, and the inside of the tank In general, strict quality check processes such as procedures for injecting raw materials, changes in components in the tank when transporting the tank and collecting raw materials, and checking for foreign substances are stipulated.

For example, the independent administrative agency "Work Procedure Manual for Milk Collection Operations of the Agriculture and Livestock Industries Corporation" stipulates procedures for milk collection operations for raw milk. In the quality control procedure, when milk is collected from the transported tank, it is taken out as a sample from the tank and checked whether it is contaminated with bacteria or the like. However, the check may take time for culturing, etc., and if you wait for it, the quality of the food itself will deteriorate and the food itself will rot, so it is unavoidable that the food after milk collection Lots are managed by putting them into processing, and if a problem is found in the sample check, the product made in that lot is usually discarded after the fact.

Therefore, there is a problem that once a problem of the food occurs when a large number of lots are aggregated, the amount of the food to be discarded also increases. Moreover, since the container itself is made of robust metal, the cost of handling the container must be reduced by cleaning and reusing it, so it is not possible to transport it in small lots. It has to be expensive for quality control.
As described above, if the lot is determined by the capacity of the tank, it will have a great influence on the occurrence of an accident during distribution and will suffer a great loss.

Japanese Unexamined Patent Publication No. 2005-239277

Incorporated Administrative Agency "Working Procedure Manual for Milk Collection Business Personnel of Agriculture and Livestock Industries Corporation"

The present invention has higher strength than the conventional inner bag container in a tank, has a high degree of freedom in the size of the container, can be used for various logistics applications, and reduces foreign matter contamination. However, it provides containers, container manufacturing methods and manufacturing equipment that are highly clean and safe and can be distributed at low cost.

Further, the present invention provides a new container form in which the degree of freedom in transportability and handleability of the container itself is extremely high.

According to the present invention, it is a flat body of a container made of a plurality of flexible composite sheets made of two or more sheets and laminated in a plane, and the composite sheets are adjacent composite sheets. It is intended to provide a flat body of a container which is joined by heat welding at a desired position between the containers so that the flat body of the container can be developed in a three-dimensional manner, and a container in which the flat body of the container is three-dimensionally developed.

Further, the present invention allows a plurality of composite sheets to be conveyed in the same direction so that a container composed of a composite sheet composed of two or more flexible sheets can be developed three-dimensionally from a planar shape. Also provided is a container sheet manufacturing apparatus in which the two or more composite sheets are laminated in a plane so that the plurality of composite sheets can be joined by heat welding at a desired position.

Further, the manufacturing apparatus of the present invention includes sheet transport rollers that are dispersed in the axial direction in order to avoid interference of protruding members attached to the composite sheet, and tension adjustment provided corresponding to the sheet transport rollers. The dancer roller is composed of at least a dancer roller for use, and the dancer roller is composed of a plurality of bars arranged concentrically and parallel to each axis at equal intervals from the rotation center axis so that the dancer roller can freely rotate around each axis. It is also configured to be freely rotatable around the axis.

Further, the manufacturing apparatus of the present invention bends a composite sheet made of two or more flexible sheets fed from a second feeding direction perpendicular to the first feeding direction for feeding the composite sheet, and the first one. The converted composite sheet is converted in the feeding direction, and the converted composite sheet is inserted in two folds between two or more composite sheets fed from the first feeding direction, and all the composite sheets are conveyed in the same direction. I am trying to do it.

Further, in the manufacturing apparatus of the present invention, a substrate that receives pressure for heat welding is inserted between the two folds in the process of transportation, and a predetermined portion between a plurality of composite sheets laminated on the substrate is inserted. It is possible to perform bonding by heat welding.

The present invention further provides a method for manufacturing a sheet for a container, and a plurality of composite sheets are formed so that a container composed of a composite sheet composed of two or more flexible sheets can be developed three-dimensionally from a planar shape. The sheets are conveyed in the same direction, and the two or more composite sheets are laminated in a plane to be joined by heat welding at a desired position between the plurality of composite sheets.

The manufacturing method of the present invention further comprises bending a composite sheet composed of two or more flexible sheets fed from a second feeding direction perpendicular to the first feeding direction in which the composite sheet is fed. A method in which the composite sheet is converted in the feeding direction, and the converted composite sheet is inserted in two folds between two or more composite sheets fed from the first feeding direction, so that both composite sheets are conveyed in the same direction. Also provides.

In addition, in the manufacturing method of the present invention, a substrate that receives pressure for heat welding is inserted between folds in the process of transportation, and a predetermined portion between a plurality of composite sheets laminated on the substrate is inserted. I am trying to join by heat welding.

A new idea according to the present invention enables heat welding in a two-dimensional shape corresponding to expansion into various shapes and sizes, thereby freely curving each corner on the internal volume side of the container. It is also possible to provide a structure that can withstand the pressure from the material such as the fluid pressure injected inside. Since the material, characteristics, size, thickness, and number of sheets to be composed can be freely adjusted, it is possible to provide an extremely reliable container according to the raw material to be injected and the transport conditions, and the container itself. Since it can be stored and transported in a two-dimensional plane state, its handling becomes extremely easy.
Hereinafter, examples of the present invention will be described in more detail with reference to the accompanying drawings.

This is an example of the container 1 according to the present invention. It is a schematic diagram which showed the wall surface of two layers constituting the container by this invention. It is a process schematic of the valve attachment sheet transfer apparatus 10 for providing the wall surface part of two layers constituting the container by this invention. FIG. 5 is a schematic view of an intermittent roller used in the valve mounting sheet transfer device 10 of FIG. It is the schematic of the roller mechanism used in the valve mounting sheet transfer device 10 of FIG. It is a side view of the sheet reversing device 20. It is a schematic diagram which looked at the sheet reversing apparatus 20 from a little diagonally above. FIG. 5 is a schematic side view of the set sheet ra (S1, S2), rb (S1, S2), the set sheet rc (S1, S2), and the set sheet rd (S1, S2) in the sheet reversing device 20 as viewed from the transport direction. This is an example of a container planar body showing a heat-welded portion to a composite sheet that can be developed three-dimensionally.

FIG. 1 is an example of a cubic container 1 of the present invention. A partial side surface of the container 1 is provided with an injection port capable of injecting a liquid, semi-liquid, or granular or powdery material into the container, and a discharge port from which the material can be taken out. The inlet and outlet can be closed with a lid that allows the container to be sealed to the material. It is preferable that the injection port is composed of an injection valve 2 so that the injected material does not overflow from the injection port, while the discharge port is composed of a discharge valve 3 for preventing excess external substances from being mixed into the container. ..

FIG. 2 shows a cross-sectional view of the side wall of the container 1. The side wall is composed of at least two composite sheets 4. The composite sheet 4 is composed of a sheet having thermoplasticity and flexibility for joining to each other by heat welding, which will be described later, preferably a plurality of sheets in which two or more resin sheets are stacked. Thermoplasticity has the property of being melted again by heating, and the resin sheet can be folded into a desired shape and bonded (welded) by utilizing its flexibility. It is advantageous for joining the parts required in the process.

The resin sheet includes, for example, polyester such as polyethylene terephthalate (PET), polypropylene (PE), polypropylene (PP) such as OPP, nylon, ethylene vinyl alcohol (EVA), ionomer, etc., but is limited thereto. It is not something that is done.

In this example, the sheet facing the inside of the container among the side walls of the container is made of a polyethylene (PE) sheet, the sheet facing the outside has a two-layer structure of a polyethylene terephthalate (PET) sheet, and the inner surface is mainly clean. On the other hand, the sheet facing the outside is mainly for reinforcement. Therefore, here, the inner sheet is relatively thin and the outer sheet is thicker than that. However, this is an example, and whether the composite sheet is made of the same material or different materials depends on how much the heat sealing function is exhibited between the materials. It is determined according to the purpose of use, and the mutual functions may be complemented by using those having different characteristics in combination. For example, in addition to requirements such as safety, corrosion resistance, light-shielding property, mechanical strength, and printability, tensile and peel strength of heat-welded joints are also important factors in material selection, and such characteristics are taken into consideration. Therefore, it is technically carefully judged whether the thicknesses of each other are the same or different. Of course, as those skilled in the art know, the tensile and peeling strength of a joint strongly depends on the thickness of the sheet, as well as the morphology of the weld, which changes depending on the heat temperature at the time of welding, how to apply heat, time, etc. It is intended to be used, and is not uniquely defined.

The injection or discharge valves 2 and 3 are valves that can be fitted into the holes formed in the composite sheet of the container and joined to the composite sheet by heat welding. The injection valve and the discharge valve are formed with a substantially flat seat contact surface extending from the center on the entire circumference thereof. The seat contact surface is made of a material that can be heat-welded to the inner sheet surface of the container side wall over the entire circumference, and due to the joining with the sheet, leakage between the valves 2 and 3 and the sheet and external substances Prevent contamination. The valves 2 and 3 may be integrally molded products made of plastic or the like having a high heel seat property with the seat. Alternatively, in recent years, PET sheets and the like, which are made of heat-sealed metal, have been used. Therefore, the valve may be integrally molded with a metal such as aluminum in consideration of corrosiveness and mechanical strength. .. Therefore, the injection valve 2 and the discharge valve 3 can be selected according to the material to be accommodated in the container, the amount to be accommodated, and the like. By joining the joint surfaces of the enlarged valves 2 and 3, which are the surfaces of the heat seal, to the inner surface of the sheet on the side wall, the joint surfaces are firmly joined by the outward pressure of the fluid or the like contained in the container 1, and the valve is valved. It is possible to prevent a few from peeling off at the joint surface.

FIG. 3 shows an installation step of an injection valve 2 and a discharge valve 3 for stretching a roll-shaped raw sheet from one end and supplying it to a subsequent heat welding step (hereinafter referred to as a post-step), and a supply step thereof. It is a schematic diagram which showed. By using this process, it is possible to substantially automate the process from valve mounting to the joining process by heat welding. Therefore, it is possible to carry out these process processes in a clean room where bacteria and dust are reduced, and it is possible to provide a clean container by omitting human hands as much as possible.

FIG. 3 shows an original sheet supply process (supply unit) 11, a laser hole drilling process (drilling device) 12 in the sheet, a valve bonding process (valve valve device) 13, and a sheet tension control process (tension control device) 14. At least shows. Each part is connected so as to be able to communicate with the controller for centralized management. The controller controls each part so as to perform a series of operations as a whole while grasping the status of each part. It should be noted that each unit may have its own control unit, and may be programmed to perform smooth operation as a whole while exchanging status information between each unit.

The raw fabric sheet supply step 11 includes a set ra of two raw fabric rolls and a set rb of the raw fabric rolls. One set ra and the other set rb are each composed of the same sheet configuration (sheet S1, sheet S2), the sheet S2 is the sheet 6 (FIG. 2) inside the container, and the sheet S1 is the container. It is used as the outer sheet 5 (FIG. 2). In this example, the sheet S1 is a PET sheet and the sheet S2 is a PE sheet. Therefore, the injection valve 2 is attached to the set sheets S1 and S2 supplied from the set ra of the raw fabric roll in the valve bonding step (valve bonding device) 13 described later, while the injection valve 2 is supplied from the set rb of the raw fabric roll. The set sheets S1 and S2 to be formed are supplied from each set of raw fabric rolls so that the discharge valve 3 can be attached.

Although not described in detail here, in the heat welding step, which is a subsequent step, the sheets S2 supplied from the set ra and the set rb of the raw fabric roll are overlapped with respect to the sheet S1 in a direction facing each other. Heat welding is performed. Therefore, in the original fabric set ra and the set rb, both sheets S2 are set so that the inner surfaces thereof face each other when viewed from the original fabric, and similarly, both sheets S1 are on the outer side of the sheet S2 and the inner side surfaces thereof. Are set in the original fabric set ra and rb so that they face each other.

The set of sheets S1 and S2 (hereinafter referred to as set sheets) drawn out are overlapped with each other so as to be laminated at the tip of the raw fabric roller, and are carried to the laser drilling step 12. In the laser drilling step 12, a part of the set sheets S1 and S2 is cut out by the laser 12a so as to match the outer shapes of the injection port and the discharge port of the injection and discharge valves 2 and 3, and the container is used for the injection port and the discharge port. Each opening is formed. Laser cutting is widely known, and it is possible to use a high-power laser capable of cutting a sheet, for example, a solid-state laser, a carbon dioxide gas laser, or a high-power semiconductor laser.

Each set sheet in which the openings of the set sheets S1 and S2 are formed is further conveyed to the tip, and a valve bonding step 13 of inserting a valve into the opening and joining the sheet to the sheet is performed.

Of the valve step 13, the process of the set sheet sent from the raw roll ra in the valve step 13 will be described.

In the valve mounting step 13, a gantry 13a capable of three-dimensional movement in the horizontal plane direction parallel to the surface of the seat and the vertical direction perpendicular to the horizontal plane direction is provided. The injection valve 2 is placed on the gantry so that the joint surface of the injection valve 2 faces the sheets S1 and S2 from the original roll ra. An opening identification sensor (not shown) attached to the gantry 13a recognizes the openings of the seats S1 and S2 and moves horizontally so as to align the openings with the injection valve 2. When the opening identification sensor recognizes that the positional relationship between the cylindrical injection port of the injection valve 2 and the opening matches, the gantry 13a moves in the vertical direction, and the injection port of the injection valve 2 becomes the set sheet S1, The valve 2 is inserted into the opening of S2 and presses the valve 2 in the direction of the heating surface of the heat welding device 13b facing the other side of the seat. The heating surface of the heat welding device 13b is substantially parallel to the surfaces of the set sheets S1 and S2, and the center of the heating surface of the heat welding device 13b so that the joint surface of the injection valve 2 can be pressed against the heating surface of the heat welding device 13b. A hole is formed in the portion so that the injection port of the injection valve 2 can be inserted. When the sheet is pressed against the heated surface of the heat welding device by the gantry 13a through the joint surface of the injection valve 2, the sheet S2 is thermally melted by the heating of the heated surface and adhered to the joint surface of the valve. Depending on the degree of heat melting, the sheet S1 is also melted by heat, which contributes to the joining between the sheets S1 and S2 and the joining with the injection valve 2.

When the injection valve 2 is joined to the seats S1 and S2 (at least the seat S2), only the gantry 13a is retracted to the original standby position, leaving the injection valve 2. The retracted pedestal 13a is provided with a conveyor (not shown) having a mounting surface so as to be bridged adjacent to the mounting surface of the gantry 13a. The new injection valve 2 carried on the conveyor to the vicinity of the gantry 13a is moved by a moving arm (not shown), placed at a desired position on the mounting surface of the gantry 13a, and waits for the next valve processing.

A method of attaching the other discharge valve 3 will be described. When an opening is formed in the set sheets S1 and S2 sent out from the raw fabric set rb, the set sheet S1 and S2 are further conveyed to the opening, and the valve step 13 process for the opening is performed. In the valve mounting step 13, instead of the above-mentioned pedestal, a gripping means for holding the discharge valve 3 capable of three-dimensional movement in the horizontal plane direction parallel to the surface of the seat and the direction perpendicular to the horizontal plane direction is provided. It is provided. In the example of the present invention, the gripping means 13c is composed of a compressor capable of generating compressed air and a rubber balloon (not shown) communicated with a flexible tube. Since the balloon expands from the inside of the discharge port of the discharge valve 3 to the outside in the radial direction by injecting compressed air to hold the discharge valve 3 in the discharge port, the target seat opening without dropping the valve 3. It is possible to carry it to. The discharge valve 3 is held so that its joint surface faces the sheet S1 and S2 surfaces, and an opening identification sensor (not shown) provided in the gripping means 13c of the valve attachment step 13 recognizes the opening. Then, the opening is horizontally moved so as to align the discharge valve 3. When the opening identification sensor recognizes that the positional relationship between the cylindrical discharge port of the valve 3 and the opening matches, the gripping means 13c moves in the vertical direction, and the discharge port of the discharge valve 3 becomes the set sheets S1 and S2. The valve 3 is inserted into the opening of the sheet and presses the valve 3 in the direction of the heating surface of the heat welding device 13d facing the other side of the sheet. The heating surface of the heat welding device is substantially parallel to the surfaces of the set sheets S1 and S2, and the central portion of the heating surface of the heat welding device 13d so that the joint surface of the discharge valve 3 can be pressed against the heating surface of the heat welding device 13d. Is formed with a hole large enough to allow the discharge port of the discharge valve 3 to enter. When the sheet is pressed against the heated surface of the heat welding device by the gripping means 13c through the joint surface of the discharge valve 3, the sheet S2 is thermally melted by the heating of the heated surface and adhered to the joint surface of the valve. Depending on the degree of heat melting, the sheet S1 is also melted by heat, which contributes to the joining between the sheets S1 and S2 and the joining with the discharge valve 3.

When the discharge valve 3 is joined to the seats S1 and S2 (at least the seat S2), the supply of compressed air is stopped to shrink the balloon, the gripping effect is eliminated, and only the gripping means 13c is retracted to the original standby position. A conveyor (not shown) having a mounting surface facing the retracted gripping means 13c is provided. The new discharge valve 3 carried on the conveyor to the vicinity of the gripping means 13c is moved by a moving arm (not shown) and placed at a desired position on the mounting surface of the conveyor so that the gripping means 13c can be gripped. Upon receiving an instruction to install the valve 3, the compressor is driven and the gripping means 13c grips the new valve 3 and performs the same valveging step.

The seats S1 and S2 to which the valves 2 and 3 have been valved are sent to the next seat reversing mechanism (FIG. 6) through the seat tension control step (device) 14. In the seat tension control step (device) 14, in order to prevent the flexible seat from bending, shifting, or wrinkling, the roller 14a grips and conveys the roller, and the dancer roller 14b equalizes the tension and wrinkles. Etc. are being prevented.
Since the injection valve 2 or the discharge valve 3 is already attached to the seats S1 and S2, the surface of the roller that feeds the seat does not interfere with the respective valves 2 and 3, and is partially as shown in FIG. A region with a small diameter is formed in. The small diameter region is adjustable so that it can be moved and fixed in the axial direction as indicated by the arrows in relation to the pre-programmed position of the injection valve 2 or discharge valve 3. Since the injection valve 2 and the discharge valve 3 have different relative positions in the sheet shape, even if the same roller is used, the rollers corresponding to the positions can be obtained, and the rollers have different shapes and sizes. It is possible to make it compatible with a sheet with a valve for making a roller container.

If the roller surface is intermittent with respect to the axial direction, it may cause undesired wrinkles or wrinkles because it has a portion where the sheet is not partially gripped and tension is not applied when viewed from the width direction of the sheet. In order to prevent the problem, the dancer roller 14b for making the tension constant as a whole in the width direction of the seat contributes. As shown in FIG. 5, the dancer roller 14b includes a roller mechanism composed of four free-rotating bars arranged in parallel on the circumference at substantially equal intervals about the central rotation axis. The distance between adjacent free rotation bars is larger than the size of the valve that becomes the sheet-like protrusion. Like the free rotation bar, the dancer roller 14b itself can rotate freely around the axis, and moves up and down as seen from the figure so that the tension of the seat applied to the surroundings is within a predetermined range. It is possible, and when the tension of the sheet becomes weak, it gives an action of stretching the sheet, and conversely, when the tension of the sheet becomes strong, it gives an action of loosening the sheet.

As shown in FIG. 3, the roller mechanism 14c, which has the same configuration as the roller mechanism (rotation mechanism) of the dancer roller 14b of FIG. It is used in several places on the sheet transport path for position adjustment and route change. Similar to the dancer roller 14b, other than the valve described above, it is advantageous for seat transportation when a component to be a protrusion is provided on the seat. When the conveyed protrusion hits the free rotation bar of the roller mechanism 14c, the free rotation bar rotates so as to avoid the protrusion due to the free rotation, and the rotation action acts on the entire free rotation to cause the protrusion. Avoiding this, the protrusions will be transported and moved between the adjacent bars without the protrusions riding on the free rotation bar.

Returning to FIG. 3, a temporary joining step (device) 15 for temporarily attaching a plurality of composite sheets by heat welding may be provided. In the temporary joining step (device) 15, a heating plate 15a for heat welding and a substrate 15b receiving pressure from the heating plate 15a are provided near both ends of the sheets S1 and S2 in the width direction, and the heating plate 15a is heated. By receiving the sheets S1 and S2 and pressing them against the substrate 15b, bonding by heat welding can be achieved. As described above, the temporary fixing may be performed continuously or discontinuously in the sheet transport direction in the finally unused area near both ends of the sheet, or the sheet provided for each container to be manufactured may be used. For each unit, the first and last parts may be performed over the width direction of the sheet. Since the sheets are flexible and the sheets S1 and S2 constituting the composite sheet may have different materials and thicknesses, the elastic modulus and temperature characteristics are different, and one expands and contracts but the other does not expand and contract. It will wrinkle or wrinkle. Therefore, by temporarily fixing the sheets S1 and S2 to each other in the process of sending them out so that they do not slip each other, stable transportation can be performed, and as a result, a high-quality container can be provided.

In FIG. 3, each sheet S1 of the raw fabric roll set ra and the raw fabric roll set rb is supplied from different raw fabrics. On the other hand, as the sheet, there is also a two-layer sheet obtained by flattening a film-like resin extruded into a cylindrical shape by inflation sheet molding. Since the two-layer sheet is flattened immediately after inflation, it is considered that the possibility of foreign matter contamination between the two-layer sheets and contamination by bacteria or the like is reduced as much as possible. Therefore, utilizing this characteristic, instead of the sheet S2 of the set ra of the raw fabric roll and the set rb of the raw fabric roll, the raw fabric roll of one two-layer sheet is prepared between the two sheets S1 of FIG. A mechanism for cutting both sides of the two-layer sheet during delivery to the mounting sheet transfer device 10 may be provided so that the two cut sheets are paired with each other to be laminated on the respective sheets S1. Although the portion of the sheet S2 will be described later, in this example, the sheet faces the inside of the container. Therefore, by using this two-layer sheet, it is possible to maintain high quality inside the container.

FIG. 3 describes a valve mounting sheet transfer device 10 capable of carrying out a step of arranging two set sheets with valves in parallel, but in the vertical direction of the center of the sheet between the two set sheets. A sheet reversing device 20 capable of carrying out a step of arranging two V-shaped set sheets so that the tips of the V-shapes face each other will be described with reference to FIGS. 6 to 8.

FIG. 6 is a side view of the sheet reversing device 20. Further, FIG. 7 is a schematic view of the sheet reversing device 20 as viewed from slightly obliquely above. The set sheets S1 and S2 from the original rolls ra and rb conveyed from the valve mounting sheet transfer device 10 are conveyed to the sheet reversing device 20. Here, the set sheet from the original roll ra is referred to as ra (S1, S2), and the set sheet from the original roll set rb is referred to as rb (S1, S2). The sheet reversing device 20 is arranged in a state in which the triangular flat plates 21a and 21b from FIGS. 6 and 7 are inclined from the left and right to the center. As will be described later, this inclination angle can be adjusted according to what kind of container cube shape is to be formed. In the sheet reversing device 20, a new set rc and rd of the original roll are further set in the direction perpendicular to the set ra and rb of the original roll, and the set sheet is ra (S1, S2) and the set sheet is rb (S1, S1,). It is provided on each of the left and right sides when viewed from the traveling direction of S2), and supplies the same sheets as the set sheets ra (S1, S2) and rb (S1, S2). Again, the set sheets S1 and S2 of the original roll set rc are referred to as rc (S1, S2), and the set sheets S1 and S2 of the original roll set rd are referred to as rd (S1, S2). Here, the original rolls rc and rd are arranged so that the overlapping of the sheets S1 and S2 is in the same order from the inside of the container to the outside when the container is developed in three dimensions, but the container is developed in three dimensions. It is also possible to arrange the sheets in different order according to the shape and purpose of the above, or to arrange the sheets made of different materials.

The set sheets rc (S1, S2) and rd (S1, S2) extend from the original rolls in the directions of the triangular flat plates 21a and 21b prepared respectively so that the sheets S1 and S2 overlap each other, and are just sheets. When the central portion in the width direction is pulled out to the tip of one of the triangular flat plates 21a and 21b, the valve mounting sheet transport device 10 side (that is, the set sheet ra (S1)) is pulled out from the tip of the triangular flat plates 21a and 21b. , S2), rb (S1, S2) are sent), and the sides of the triangular flat plates 21a and 21b are bent toward the other surface side of the triangular flat plates 21a and 21b, so that the direction of transportation is conveyed. Is changed in the same direction as the transport direction of the set sheet ra (S1, S2) and the set sheet rb (S1, S2), and is transported on the other side of the triangular flat plates 21a and 21b. The angle of the side used for folding back from the tip of the triangular flat plate with respect to the transport direction of the set sheet ra (S1, S2) and the set sheet rb (S1, S2) is the angle of arrangement of the original rolls rc and rd. It can be determined according to the angle of inclination of the triangular flat plates 21a and 21b.

Since the triangular flat plates 21a and 21b are provided with an inclination angle, the set sheets rc (S1, S2) and the set sheets rd (S1, S2) whose directions are changed from those of the triangular flat plates 21a and 21b are the sheets. A substantially V-shaped shape that is bent parallel to the longitudinal direction at the center of the width is formed when viewed from the transport direction. In FIG. 6, the feeding portion of the sheet S1 is indicated by a dotted line, and the bent portion forming the V-shape of the sheet is indicated by a broken line. In FIG. 7, the set sheet ra (S1, S2) and the set sheet rb (S1, S2) is shown by a dotted line to show the relationship with the set sheet rc (S1, S2) and the set sheet rd (S1, S2). The shape of the tips of the triangular flat plates 21a and 21d and the shape of the sides to be used for folding are determined so that the sheet is not damaged by the transport force or speed, and the triangular flat plates including those shapes are included. The material and surface treatment of the sheet are also determined in consideration of the slipperiness of the sheet on the flat surface. The flat plate that acts as an inversion plate is not necessarily limited to a triangular shape as long as the transport direction can be changed. It is also possible to use a plurality of reversing plates in the vertical direction to form a container that can be developed into various shapes by using a composite sheet in which a larger number of sheets are laminated.

FIG. 8 shows the set sheet ra (S1, S2), rb (S1, S2) and the set sheet rb (S1, S2), which are bent by the sheet reversing device 20 so that their tips face each other. It is a side schematic side view from the transport direction of the set sheet rc (S1, S2) and the set sheet rd (S1, S2) arranged sandwiched between S1, S2). With reference to FIG. 7, the set sheets ra (S1, S2), the set sheet rb (S1, S2), the set sheet rc (S1, S2), and the set sheet rd (S1, S2) whose orientations are aligned with each other are first. Is arranged so that the flat substrates 25a and 25b for heat welding, which will be described later, are inserted between the set sheet rc (S1, S2) and the set sheet rd (S1, S2) bent in a V shape. FIG. 8 exemplifies the substrates 25a and 25b as well. Since the sheet is folded back with the V-shaped mouth open to the left and right, by arranging it automatically from both sides or in the transport direction in advance, thermocompression bonding is performed from the V-shaped open mouth to the inside of the sheet. It is possible to arrange the boards 25a and 25b. Moreover, as is clear from FIG. 8, the set sheets ra (S1, S2) and rb (S1) are further sandwiched between the V-shaped set sheets rc (S1, S2) and rd (S1, S2) above and below the set sheets rc (S1, S2) and rd (S1, S2). , S2) are arranged so as to be aligned as a whole, so it is understood that if all the sheets are pressed from above and below, a substantially flat sheet complex is formed. At this time, since the heat-bonding substrates 25a and 25b are already loaded between the composite layers, the heating element for heat welding can be set by pressing the heating elements for heat welding from above and below toward the heat-bonding substrates 25a and 25b. Between the sheets ra (S1, S2) and the set sheets rc (S1, S2) and rd (S1, S2), and between the set sheets rb (S1, S2) and the set sheets rc (S1, S2) and rd (S1, S1, Heat welding with S2) is also possible, and therefore contributes to the automation of heat welding in the post-process. As a result, the raw fabric roll in the pre-process is placed and pulled out, and then in the post-process. It can be understood that automation up to joining at a predetermined location by heat welding is also possible. Therefore, it is possible to provide a cleaner and safer product by arranging the automation process in the clean room without intervening a human being who causes the mixing of foreign substances such as dust.

FIG. 9 shows an example of a welded portion to the composite sheet obtained above. Dotted lines, broken lines, and solid lines are all bold parts that are joined by heat welding. Since the sheet has flexibility, it can be easily developed into a three-dimensional shape after joining. The unfolded one is the cubic container shown in FIG. 1 (the excess part has been cut off).

Focusing on the flexibility of the sheet, the new idea described in this application provides a transfer, component mounting and transfer process so that it can be dropped into a heat-weldable two-dimensional shape, resulting in a variety of two-dimensional shapes. It is also possible to perform heat welding corresponding to the development into various shapes and sizes. Moreover, since it has an arbitrary two-dimensional function such as being able to freely curve each corner on the internal volume side of the container in heat welding, the pressure such as the fluid pressure injected inside It is possible to provide a structure that can withstand the pressure, and the material, characteristics, size, thickness, and number of sheets to be composed can be freely adjusted, and the container is extremely reliable according to the raw material to be injected and the transport conditions. Can be provided. Further, since the container itself can be stored and transported in a two-dimensional plane state, its handling becomes extremely easy.

That is, the present invention can provide an extremely characteristic container in which the standard of the product can be flexibly changed according to the material, the shape of the container, the capacity, etc., and therefore the cost is low while maintaining the reliability. It is also possible to provide a container that can sufficiently cope with the change, an apparatus for manufacturing the container, and a manufacturing method.

1 Container 2 Injection valve 3 Discharge valve 4 Composite sheet 5 First sheet (Sheet S2)
6 Second sheet (Sheet S1)
10 Valve mounting sheet transfer device 11 Raw sheet supply process (supply section)
12 Laser drilling process (drilling device)
13 Valve process (valve device)
13a Stand 13b Heat welding device 13c Gripping means 14 Seat tension control process (tension control device)
14a Roller 14b, 14c Roller mechanism 15 Temporary joining process (device)
20 Sheet reversing device 21a, 21b Triangular flat plate 25a, 25b Heat welding receiving substrate ra, rb, rc, rd Raw fabric roll set S1 PET sheet S2 PE sheet

Claims (8)

As the one or more sheets composed of sheet element more Again flatly superposed sheet ing a composite sheet having flexibility can be sterically possible deployment, in a method for conveying a sheet There ,
To allow developing the sheet in the three-dimensional shape, have rows joining by thermal welding apparatus at a desired position between adjacent sheets for constituting the composite sheet,
Some of the sheets of the plurality of sheets for forming the composite sheet to which the projecting members are attached are fed out to the sheet transport rollers existing dispersed in the axial direction so as to avoid interference .
The sheet conveying roller after it sent out said projecting member said portion attached sheets existing distributed axially, Ru gives tension to be delivered to the roller for tension adjustment depending on the sheet,
Including the above, the tension adjusting roller is composed of a plurality of free rotation bars that are separated from each other in the circumferential direction in which the roller rotates, and the protruding member has a part of the sheet via the tension adjusting roller. A method that is large enough to fit in the adjacent gaps of the free rotation bar when it is sent out. A method for forming a sheet body composed of a composite sheet in which a plurality of sheets composed of one or a plurality of flexible sheet elements are stacked and stacked in a plane shape.
The composite sheet so that the sheet is a deployable stereoscopic shape performs joining by thermal welding apparatus at a desired position between adjacent sheets for forming the composite sheet,
The part of the sheet for constituting the composite sheet protruding member is attached to out feeding in the first feeding direction, the other sheet for constituting the composite sheet, different from the first feeding direction after leaving the feed to the second feeding direction and be converted by means bending to the while bent folded in two first feeding direction, and the first delivery of said portion fed from the direction the sheet to leave feed and other sheets in the 2-fold in the same direction,
Including that
The bending means is installed by forming a tip and tilting a side having a predetermined angle, so that the other sheet fed from the original fabric installed horizontally or tilted is bent and sent out. was Suyo superimposed transformed allowed by some the sheet forming method of the sheet member. Further comprising: performing bonding by thermal welding apparatus at a predetermined position between the sheets constituting the composite sheet superimposed on the substrate receiving a pressure for the heat seal between said folded, according to claim 2 Method . Between the composite sheets so that a sheet body composed of a composite sheet in which a plurality of flexible sheets composed of one or a plurality of sheet elements are stacked and stacked in a plane can be developed three-dimensionally from the plane. A heat welding device for performing bonding by heat melting at the desired position of
A sheet transport roller that is dispersed in the axial direction in order to avoid interference of protruding members attached to a part of the composite sheet, and
A tension adjusting roller for adjusting the tension of a part of the sheets to which the projecting members sent out through the sheet transport rollers existing dispersed in the axial direction are attached, and the rotating circumferential direction of the rollers. The projecting member is composed of a plurality of free-rotating bars that are separated from each other, and the protruding member has a size that allows the protruding member to enter a gap adjacent to the free-rotating bar when the part of the sheet is sent out via the tension adjusting roller. It has a roller for adjusting the tension.
Sheet joining and transporting equipment. The other sheet of the composite sheet having flexibility delivered from the second feeding direction in a direction different from the first feeding direction in which the part of the composite sheet is fed is bent in the first feeding direction. The other sheets of the converted composite sheet are inserted in half between the partial sheets of the composite sheet fed from the first feeding direction, so that all the sheets are the same. The sheet joining and conveying device according to claim 4 , wherein the sheet is conveyed in a direction. In the process of transporting, a substrate that receives pressure for heat welding was inserted between the two folds so that bonding by thermal melting could be performed at a predetermined position between the sheets stacked on the substrate. The sheet joining and conveying device according to claim 5. Between the composite sheets so that a sheet body composed of a composite sheet in which a plurality of flexible sheets composed of one or a plurality of sheet elements are stacked and stacked in a plane can be developed three-dimensionally from the plane. A heat welding device for performing bonding by heat melting at the desired position of
A sheet transport roller that is dispersed in the axial direction in order to avoid interference of protruding members attached to some of the sheets constituting the composite sheet, and
While the other sheets constituting the composite sheet fed in the second feeding direction different from the first feeding direction of the part of the composite sheet to which the protruding member is attached are folded in half. It has a bending means for changing to the first feeding direction, and has.
The bending means has a side that forms a tip and has a predetermined angle, and the side is tilted so that the original fabric of the other sheet is installed horizontally or tilted, whereby the bending means is installed. A sheet joining and transporting device in which the other sheet from the original fabric is folded back and the direction of feeding is changed so that the other sheet can be overlapped with the part of the sheet. The sheet joining and transporting apparatus according to claim 7 , further comprising a substrate that receives pressure for heat welding between the two folds in the process of feeding.

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