WO2004022327A1 - 立体成形段ボールとその製造方法 - Google Patents
立体成形段ボールとその製造方法 Download PDFInfo
- Publication number
- WO2004022327A1 WO2004022327A1 PCT/JP2002/012800 JP0212800W WO2004022327A1 WO 2004022327 A1 WO2004022327 A1 WO 2004022327A1 JP 0212800 W JP0212800 W JP 0212800W WO 2004022327 A1 WO2004022327 A1 WO 2004022327A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cardboard
- paper
- liner
- core
- waveform
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/07—Embossing, i.e. producing impressions formed by locally deep-drawing, e.g. using rolls provided with complementary profiles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/36—Moistening and heating webs to facilitate mechanical deformation and drying deformed webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D65/00—Wrappers or flexible covers; Packaging materials of special type or form
- B65D65/38—Packaging materials of special type or form
- B65D65/40—Applications of laminates for particular packaging purposes
- B65D65/403—Applications of laminates for particular packaging purposes with at least one corrugated layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0707—Embossing by tools working continuously
- B31F2201/0754—The tools being other than rollers, e.g. belts or plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F2201/00—Mechanical deformation of paper or cardboard without removing material
- B31F2201/07—Embossing
- B31F2201/0756—Characteristics of the incoming material, e.g. creped, embossed, corrugated
Definitions
- the present invention also relates to a three-dimensional molded cardboard having a three-dimensional shape used for a part of products in the fields of electric and mechanical related, automobile related and construction related or packaging.
- a paper cardboard is punched into a predetermined shape, and the punched paper cardboard is inserted into a molding die having a three-dimensional shape.
- a method of forming a paper corrugated ball into a predetermined three-dimensional shape by pressure molding has been proposed.
- paper corrugated cardboard is not flexible because the cardboard corrugated itself is a thick structure and does not have elasticity.
- the bent part may have wrinkles or tears due to the difference in circumference between the liner on the inner surface and the liner on the outer surface of the paper cardboard.
- wrinkles and tears are likely to occur when the cardboard made of paper is bent in a direction not along the corrugated direction of the core. If such three-dimensional corrugated cardboard has such wrinkles and tears, it will impair the appearance and reduce the value of the product.
- a ⁇ -line to be a fold line is formed in advance at a position where the paper-made corrugated ball will be bent, and then press-molding with a molding die. It is known that a paper corrugated cardboard is bent along the ⁇ line formed on the paper corrugated cardboard to form a corrugated corrugated cardboard with as little as possible wrinkles and no breakage.
- the present invention has been made to solve the above-mentioned problems of the conventional technology, and it is intended to prevent the occurrence of wrinkles and tears in a cardboard made of paper, and to provide an appearance having a heat insulating effect and a cushioning effect. It is an object of the present invention to provide a good three-dimensional molded cardboard and a manufacturing method thereof.
- the first invention is such that waveforms having the same height are continuous.
- a three-dimensional molded cardboard having a bent portion in at least a part of a paper cardboard formed of a core and a single-sided or double-sided liner adhered to an apex portion of the waveform via an adhesive, wherein the bent portion is provided.
- the part is characterized in that it is plastically deformed in a state where the waveform of the core is maintained in a substantially uniform shape with other parts.
- the cardboard made of paper keeps a substantially uniform thickness over the entire three-dimensional shape, the heat insulating effect and cushioning effect of the cardboard made of paper are maintained.
- a second invention is characterized in that, in addition to the configuration of the first invention, the bent portion is formed with a plurality of independent cut portions penetrating in the thickness direction of the paper cardboard.
- the liner on the inner surface of the bent portion has a bending radius of at least 1.5 times the thickness of the paper cardboard. It is characterized by.
- a paper-made corrugated cardboard formed by a core having continuous waveforms of the same height and a liner on one or both sides adhered to a vertex of the waveform via an adhesive.
- a three-dimensional molded cardboard having a curved surface portion, wherein the curved surface portion is plastically deformed in a state where the waveform of the core is maintained in a substantially uniform shape.
- a fifth invention is characterized in that, in addition to the configuration of the fourth invention, a plurality of independent cut portions penetrating in the thickness direction of the cardboard made of paper are formed in the curved surface portion. According to this, since the degree of freedom of forming the liner on the outer surface of the curved portion of the paper cardboard is improved, it is possible to form a complicated three-dimensional shape or a deep drawn shape.
- a paper corrugated board formed of: a core having continuous waveforms at the same height; and a liner on one or both sides adhered to a vertex of the waveform via an adhesive.
- the liner is given elasticity by the humidification step of humidifying the liner and is expanded and contracted, thereby preventing wrinkles and tears when the paper corrugated board is bent.
- the paper cardboard is formed into a three-dimensional shape by heating and is dehumidified and hardened, the three-dimensional shape of the paper cardboard can be maintained.
- the strength of the paper corrugated pole can be improved by lowering the water content of the liner in the heating process from the water content of the paper corrugated ball before the humidification process.
- since there is no need for a work step of forming a vertical line it is possible to manufacture a three-dimensional molded cardboard at low cost.
- the humidifying treatment of the cardboard made of paper in the humidifying step humidifies only the liner on the outer surface of the bent portion and the Z or the curved surface portion. It is characterized by having.
- the target three-dimensional shape is completed by giving extensibility to the liner on the outer surface without humidifying excess moisture, In the heating step in that case, the drying time can be reduced.
- a seal for compression working formed of the pair of dies is formed by a cavity side die and a core side die before molding. 70 to 90% of the thickness of the paper corrugated cardboard
- a ninth aspect in addition to the configuration according to any one of the sixth to eighth aspects, in the heating step, high-frequency waves emitted from a high-frequency generator are used, and the entire paper corrugated board is made substantially uniform. This is characterized by heating and dehumidification. According to this, since excessive heat is not applied to a part of the paper cardboard, a part of the liner is not scorched. Moreover, the liner and the core of the paper cardboard can be dehumidified almost uniformly, and the drying time can be greatly reduced.
- FIG. 1 is a perspective view showing Embodiment 3 of a three-dimensional molded cardboard according to the present invention.
- FIG. 2 is a front view of the first embodiment.
- FIG. 3 is a sectional view of an essential part taken along line AA of FIG.
- FIG. 4 is a longitudinal sectional view of an essential part of a state in which the cardboard made of paper is set in a mold, showing a method of forming the cardboard made of paper by heating and pressing according to the first embodiment.
- FIG. 5 is a longitudinal sectional view of an essential part in a state where the molding of the paper corrugated cardboard is completed, showing a method of molding the paper corrugated cardboard by heating and pressing according to the first embodiment.
- FIG. 6 is a view showing a state before molding of the paper-made corrugated cardboard according to the second embodiment
- FIG. 6a is an enlarged plan view of a main part thereof
- FIG. FIG. 4 is an enlarged sectional view of a main part along line B-B of FIG.
- FIG. 7 is a front view showing a second mode of the paper cardboard according to the first embodiment.
- FIG. 8 is a front view showing a third mode of the paper cardboard of the first embodiment.
- FIGS 1 to 5 are diagrams showing Embodiment 1 of the present invention.
- reference numeral 1 denotes a cardboard made of paper.
- the cardboard 1 made of paper has a core 2 having continuous waveforms of the same height and a vertex portion 3 of the waveform via an adhesive (not shown). It is formed of a so-called generally known double-faced cardboard made of a pair of liners 4 bonded together.
- the paper corrugated board 1 is compressed by a mold 7 to be described below to about 70 to 90% of the thickness of the paper corrugated board 1 before molding, and the paper corrugated board 1 is formed before molding.
- the waveform of the core 2 is deformed into a substantially trapezoidal wave shape that maintains the waveform as much as possible, and the paper corrugated ball 1 itself is plastically deformed into a three-dimensional shape having a bent portion 5 and a curved surface portion 16 c.
- the curved surface portion 16 is formed to have a substantially uniform thickness with the flat shape portion 6 where the paper corrugated cardboard 1 is not bent, while maintaining the waveform without being bound by the waveform direction of the core 2. I have.
- the liner 4a on the inner surface of the bent portion 5 where the degree of bending deformation is large is formed with a bending radius of 1.5 times or more the thickness of the cardboard 1 made of paper, so that the bent portion 5 at the time of molding is formed. Reduces stress concentration
- Paper corrugated cardboard 1 is a generally known paper double-faced corrugated cardboard as described above.
- This double-faced corrugated cardboard has a corrugated cardboard with a corrugation of less than 30 per 30 cm. If the rigidity of the tape 1 is insufficient and the thickness exceeds 5 mm, the double-sided corrugated cardboard may be broken during molding.
- the thickness of the liner 4 is approximately 0.3 to 0.5 mm, and the core 2 and the liner 4 are made of starch or an adhesive with an adhesive strength equal to or greater than this.
- a double-faced corrugated cardboard with a thickness of about 2 to 5 mm is used, and the corrugated height of the core 2 is a value obtained by subtracting the thickness of the pair of liners 4 from the thickness of the paper cardboard 1. .
- the paper cardboard 1 itself is a thick structure, and the paper forming the paper cardboard 1 does not have elasticity as it is, so that the paper cardboard 1 is made flexible. Therefore, the paper corrugated cardboard 1 is provided with elasticity by humidifying at least a portion of the outer surface of the bent portion 5 and the curved surface portion 16 that will be bent to become the liner 4b.
- the moisture content for humidifying the liner 4 of the paper corrugated cardboard 1 depends on the thickness and the material of the paper corrugated board 1, but usually the paper corrugation before the moisture is humidified. Since the water content of ball 1 is about 6-8%, it must be higher than this water content. However, if the water content is too high, evaporation of water when heated causes problems such as blistering on the surface of the liner 4 .On the other hand, if the water content is too low, the liner 4 remains hard It is preferable to set the water content to about 17 to 19% because it is difficult to form a compact.
- the method of humidifying the paper corrugated cardboard 1 is not particularly limited, but considering that the core 2 is not humidified, the liner 4 b on the outer surface of the bent portion 5 and the curved portion 16 is considered. Is desirable. This allows the liner 4 of the paper ball 1 to expand and contract to form a three-dimensional shape regardless of the waveform direction of the core 2 in the shaping step described below.
- the core 2 also has the same water content as the liner 4, the core 2 is softened to the core 2, so that when pressed in the shaping step described below, the waveform of the core 2 cannot be maintained.
- the degree of deformation of the bent portion 5 or the curved surface portion 16 When the degree of deformation of the bent portion 5 or the curved surface portion 16 is small, it is possible to prevent wrinkles or breakage by humidifying only the liner 4 b on the outer surface of the bent portion 5 or the curved surface portion 16. However, if the degree of deformation of the bent portion 5 or the curved portion 16 is large, it is possible to humidify both the liner 4a on the inner surface and the liner 4b on the outer surface of the bent portion 5 or the curved portion 16. Good.
- a shaping step and a heating step of forming a predetermined three-dimensional shape on the paper cardboard 1 whose moisture has been humidified in the humidifying step are performed.
- the shaping step and the heating step are, as shown in FIG. 4, a shaping method in which shaping is performed using a pair of dies 7, and the paper corrugated cardboard 1 is pressed by the pair of dies 7 to form a curved surface.
- the corrugated cardboard 1 is heated to dehumidify and harden the moisture of the corrugated paperboard 1 to maintain the three-dimensional shape.
- the pair of molds 7 includes a cavity-side mold 8 provided with a dug portion 10 formed in a three-dimensional shape having a curved surface, and a core-side die provided with a three-dimensional shape corresponding to the dug portion 10. It is composed of two upper and lower molds with the mold 9.
- the bent portion 11 of the dug portion 10 of the cavity side die 8 is formed to have a bending radius of 1.5 times or more the thickness of the paper cardboard 1 to be molded.
- the core-side mold 9 is configured to be movable at least in the vertical direction, and thereby has a structure capable of pressing the paper cardboard 1 into a predetermined three-dimensional shape.
- a protrusion 13 is formed on the mold surface 12 of the core mold 9, and the protrusion 13 is formed when the cavity mold 8 and the core mold 9 are overlapped.
- the bottom surface is formed so as to be in contact with the mold surface 14 of the cavity side mold 8 to provide a clearance for determining the compression amount.
- the height H of the clearance for the compression is 70 to 90% of the thickness of the corrugated paperboard 1 to be molded before molding.
- the pair of molds 7 are heated to a predetermined temperature in order to evaporate and dehumidify the moisture of the humidified paper cardboard 1.
- the heating temperature is set according to the material and thickness of the paper cardboard 1.When the heating temperature is less than 100 ° C, the moisture of the paper cardboard 1 does not boil, so that the moisture can be removed. If the temperature is higher than 100 ° C., the surface of the paper cardboard 1 may be blackened as if burnt. It is preferable to set the temperature of the pair of molds 7 at about ° C, more preferably within a range of 140 to 160 ° C.
- the method for heating the pair of molds 7 is not particularly limited, but An example is a method in which an electric heating device (not shown) is provided in the pair of molds 7 and heating is performed.
- the pair of molds 7 is connected to a high-frequency generator (not shown) for heating and dehumidifying the paper corrugated ball 1 in combination with the pair of heated molds 7.
- the mold surface 14 of the cavity side mold 8 and the mold surface 12 of the core side mold have escape holes (not shown) through which the steam generated from the paper cardboard 1 when heated can flow out. Are formed.
- a projection 13 is provided on the core side mold 9.
- the present invention is not limited to this, and it is also possible to provide the projection 13 on the cavity side mold 8.
- the corrugated paperboard 1 with the above-mentioned moisture humidified is inserted between the cavity-side mold 8 and the core-side mold 9, and the core-side mold 9 is inserted into the cavity-side mold 9 as shown in FIG.
- the paper corrugated cardboard 1 inserted between the pair of dies 7 is pressed by the core-side dies 9 to be shaped while being moved toward the dies 8.
- Pressure applied by Koa side mold 9 is adjusted to match the thickness and paper cardboard 1 moldability, generally from 0.1 to 0. It is often a 3 k pressure gZ cm 2.
- the paper corrugated cardboard 1 pressed by the core mold 9 is formed to have a clearance height H for compression, and the paper corrugated cardboard 1 is humidified and has elasticity.
- the liner 4b on the outer surface of the bent portion 5 and the curved portion 16 is elongated without being broken, and the liner 4a on the inner surface of the bent portion 5 and the curved portion 16 is shrunk.
- the shape is formed along the shape of the pair of molds 7 ′ without generating wrinkles, and a three-dimensional shape having the bent portion 5 and the curved surface portion 16 is formed on the paper cardboard 1.
- the core 2 corresponding to the bent portion 5 and the curved surface portion 16 maintains the waveform before molding as much as possible without peeling off the adhesive. Deformed into a trapezoidal wave shape.
- the paper cardboard 1 in contact with the heated pair of molds 7 causes the humidified water to exceed the boiling point due to the heating, so that the water vapor becomes steam.
- This water vapor slightly humidifies the core 2 of the paper cardboard 1 to give a certain degree of elasticity, and at the same time, water vapor is discharged from the escape holes formed in the pair of molds 7, and moisture is discharged from the paper cardboard 1. Dehumidified.
- the whole of the paper cardboard 1 is almost uniformly heated and dehumidified by the high frequency radiated from the high-frequency generator, thereby obtaining the paper cardboard 1.
- the moisture content of the core 2 and the liner 4 is almost uniform.
- the liner 4 of the cardboard 1 made of paper is expanded and contracted, and is cured by dehumidifying and drying the water from the cardboard 1 in a state of being formed into a three-dimensional shape having a bent portion 5 and a curved surface portion 16.
- the corrugated cardboard 1 is plastically deformed to complete a three-dimensional molded corrugated ball.
- the amount of dehumidification of paper corrugated cardboard 1 by a pair of heated molds 7 and a high-frequency generator should be more dry than the water content of 6 to 8% of paper corrugated cardboard 1 before molding. Since the strength of the paper cardboard 1 can be improved by eliminating the elasticity of the paper cardboard 1, dehumidification is performed until the water content of the liner 4 of the paper cardboard 1 is 3% or less, more preferably, as close to 0% as possible. Is good.
- the three-dimensional shape having the bent portion 5 and the curved surface portion 16 is formed in a part of the paper cardboard 1.
- the present invention is not limited to this. If so, for example, it can be formed in a container shape having a polygonal outer shape or a three-dimensional shape having only a curved surface portion such as a hemispherical body.
- the entire paper corrugated ball 1 is heated and dehumidified using a high-frequency generator to uniformly dehumidify the paper, but the invention is not limited to this, and the paper humidified only by a pair of heated molds 7 is used. It is also possible to dehumidify the cardboard made 1. Further, it is also possible to print on the paper cardboard 1 before molding, and in this case, the ink and pigment to be printed are those which do not dissolve by heating in the heating step. Further, if printing is performed at a position where the paper cardboard 1 is bent, the printing may be deformed due to expansion and contraction. Therefore, it is preferable to print at a position excluding the bent portion 5.
- the three-dimensional molded cardboard thus formed is a paper made of a core 2 having continuous waveforms of the same height and a pair of liners 4 bonded to the top 3 of the waveform with an adhesive.
- the corrugated cardboard 1 has a bent portion 5 and a curved surface portion 16 on a part thereof, and the waveform of the core 2 corresponding to the bent portion 5 and the curved surface portion 16 is almost uniform with the waveforms of the other portions. It is plastically deformed while maintaining its shape.
- the three-dimensional molded cardboard is manufactured by a humidifying step of humidifying the liner 4, a shaping step of forming a three-dimensional shape by applying pressure, and a heating step of dehumidifying the water content of the liner 4 of the paper cardboard to 3% or less.
- the humidifying process the bent portion 5 and the curved surface portion 16 are given elasticity to the cardboard 1 made of paper, and the liner 4b on the outer surface is extended by the shaping process and the heating process, and the liner on the inner surface is formed. Since 4a is bent by shrinking, it is possible to prevent wrinkles and tears from being generated, and it is possible to form a three-dimensional shape having a good appearance.
- the vertical line is formed and the thickness of the paper cardboard 1 is not reduced, the heat insulating effect and the buffering effect of the paper cardboard 1 are not reduced. Furthermore, since the paper cardboard 1 is dehumidified and hardened by heating in a state where the paper cardboard 1 is formed in a three-dimensional shape, it is possible to maintain the state in which the paper cardboard 1 is formed in a three-dimensional shape. In addition, the strength of the paper cardboard can be improved by lowering the water content than before molding. Further, since a work step of forming a vertical line is not required, it is possible to manufacture a three-dimensional molded cardboard at low cost.
- the liner 4a on the inner surface of the bent portion 5 where the degree of bending deformation is large has a bending radius of 1.5 times or more the thickness of the cardboard 1 made of paper. It is possible to form a three-dimensional shape while preventing the occurrence of cracks and tears.
- the degree of deformation of the bent portion 5 and the curved surface portion 16 is small because the humidification of the paper cardboard 1 in the humidification process is performed by humidifying only the liner 4 b on the outer surface of the bent portion 5 and the curved surface portion 16.
- the desired three-dimensional shape is completed by giving extensibility to the liner 4b on the outer surface without humidifying excess moisture, and the drying time can be reduced in the heating step in that case. It becomes.
- the core 2 of the cardboard 1 made of paper is not humidified, it is possible to perform a stable forming process without uneven buckling of the waveform of the core 2.
- the clearance for compressing the paper cardboard 1 formed by the cavity side die 8 and the core die 9 is set to 70 to 90% of the thickness of the paper cardboard 1, so that the liner 4 No stress exceeding the properties of the core 2 is applied, and the core 2 is compressed and deformed in the thickness direction while maintaining the uniformity of the waveform, so that the liner 4 does not wrinkle or break, The appearance of the finished product is good.
- the paper corrugated board 1 is heated by the pair of molds 7 and the entire paper corrugated board 1 is almost uniformly heated by the high frequency irradiated from the high frequency generator to dehumidify the paper corrugated board 1. Since a part of the cardboard 1 is not heated more than necessary, the part of the liner 4 is not burned. In addition, the liner 4 and the core 2 of the paper cardboard 1 can be substantially uniformly dehumidified, and the drying time can be greatly reduced.
- FIG. 6 is a view showing a state before molding of a paper cardboard according to Embodiment 2 of the present invention.
- Embodiment 2 of the present invention as shown in FIG. 6, a core 2 having continuous waveforms of the same height and an apex 3 of the waveform are bonded to each other with an adhesive (not shown).
- a plurality of embedded portions 15 are formed alternately vertically and horizontally.
- the cutout 15 may break from the end of the cutout 15 on the side where the paper cardboard 1 stretches when bent, so to prevent this.
- both ends of the rectangle are cut out to form a circular shape 15a.
- a paper corrugated board 1 is inserted between a pair of molds 7 and pressurized to form a paper corrugated board 1 into a three-dimensional shape, and a paper corrugated board 1 is heated to form a paper corrugated board.
- the core 2 corresponding to the bent portion 5 and the curved portion 16 has a waveform that is different from that of the corrugated board 1 by using a method of producing the liner 4 of the corrugated cardboard 1 through a heating step of dehumidifying the water content of the liner 4 to 3% or less.
- the three-dimensional molded cardboard is plastically deformed while maintaining a substantially uniform shape with the part.
- the cutouts 15 are formed alternately in the vertical and horizontal directions in the paper cardboard 1 in which the bent portion 5 and the curved surface 16 of the paper cardboard 1 are formed.
- the present invention is not limited to this, and it is also possible to form the cut portions 15 in the vertical direction, the horizontal direction, or the radial direction according to the three-dimensional shape formed on the paper-made corrugated ball 1 to form the three-dimensional shape.
- the cut portion 15 is cut out into a shape obtained by connecting the circular shapes 15a at both ends with a rectangle, but is not limited to this, and may be a shape obtained by connecting the circular shapes 15a at both ends with a slit. Is also possible.
- the present invention is not limited to this, and another first cardboard according to the first embodiment is used.
- a liner 4 is provided only on the lower surface side of the core 2 as shown in FIG. 7 showing an embodiment, and a core 2 is provided as shown in FIG. 8 showing another second embodiment of the first embodiment. It is also possible to use a so-called single-sided cardboard in which the liner 4 is provided only on the upper surface side.
- a three-dimensional molded cardboard made of cardboard flat paper having a shape corresponding to the outer shape is provided on the lower surface or upper surface of the core 2 without the liner 4 of the three-dimensional molded corrugated cardboard formed of single-sided cardboard.
- the paper-made corrugated cardboard which prevents the generation
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- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004534080A JPWO2004022327A1 (ja) | 2002-08-30 | 2002-12-05 | 立体成形段ボールとその製造方法 |
AU2002357587A AU2002357587A1 (en) | 2002-08-30 | 2002-12-05 | Three-dimensionally shaped corrugated fiberboard and its producing method |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002254728 | 2002-08-30 | ||
JP2002/254728 | 2002-08-30 |
Publications (1)
Publication Number | Publication Date |
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WO2004022327A1 true WO2004022327A1 (ja) | 2004-03-18 |
Family
ID=31972850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2002/012800 WO2004022327A1 (ja) | 2002-08-30 | 2002-12-05 | 立体成形段ボールとその製造方法 |
Country Status (4)
Country | Link |
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JP (1) | JPWO2004022327A1 (ja) |
CN (1) | CN1649723A (ja) |
AU (1) | AU2002357587A1 (ja) |
WO (1) | WO2004022327A1 (ja) |
Cited By (1)
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WO2017217389A1 (ja) * | 2016-06-14 | 2017-12-21 | 恵和株式会社 | 発炎筒保持具 |
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CN102582129A (zh) * | 2012-02-29 | 2012-07-18 | 夏科 | 纸质包装的制造系统和制造方法 |
JP2014097879A (ja) * | 2012-11-15 | 2014-05-29 | Sumitomo Electric Ind Ltd | 光ファイバの巻取り方法、ボビン巻き光ファイバおよび光ファイバの搬送方法 |
CN108215340A (zh) * | 2018-01-26 | 2018-06-29 | 苏州工业园区明扬彩色包装印刷有限公司 | 一种曲面高周波成型模具及曲面成型方法 |
CN111546691A (zh) * | 2020-05-14 | 2020-08-18 | 重庆凯成科技有限公司 | 一种背面装填式防盗弧形纸质品包装盒的制造工艺 |
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JPS5310182A (en) * | 1976-07-15 | 1978-01-30 | Nissan Motor Co Ltd | Process for forming corrugated cardboard |
JPS5418976Y2 (ja) * | 1976-07-21 | 1979-07-14 | ||
JPS54142288A (en) * | 1978-04-27 | 1979-11-06 | Nissan Motor Co Ltd | Molding of corrugated board |
JPS6054867B2 (ja) * | 1981-02-25 | 1985-12-02 | 日産自動車株式会社 | 段ボ−ルの成形方法 |
JPH02235623A (ja) * | 1989-03-09 | 1990-09-18 | Risaburo Yada | 両面段ボール及びその製造方法 |
CA2135280A1 (en) * | 1992-05-08 | 1993-11-25 | Alex Ong | Moulded container |
-
2002
- 2002-12-05 WO PCT/JP2002/012800 patent/WO2004022327A1/ja active Application Filing
- 2002-12-05 AU AU2002357587A patent/AU2002357587A1/en not_active Abandoned
- 2002-12-05 JP JP2004534080A patent/JPWO2004022327A1/ja active Pending
- 2002-12-05 CN CNA028295161A patent/CN1649723A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09272162A (ja) * | 1996-02-09 | 1997-10-21 | Okabe Eng Kk | 故紙を利用した紙成形品の乾式製造方法 |
JP2001252994A (ja) * | 2000-03-13 | 2001-09-18 | Kondo Machinery Co | 段ボール成形品とその製造方法 |
JP2002179044A (ja) * | 2000-10-03 | 2002-06-26 | Oji Paper Co Ltd | 紙製成形容器及びその製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017217389A1 (ja) * | 2016-06-14 | 2017-12-21 | 恵和株式会社 | 発炎筒保持具 |
JPWO2017217389A1 (ja) * | 2016-06-14 | 2018-12-06 | 恵和株式会社 | 発煙筒保持具及びその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2004022327A1 (ja) | 2005-12-22 |
CN1649723A (zh) | 2005-08-03 |
AU2002357587A1 (en) | 2004-03-29 |
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