container

Abstract

To provide a novel container exerting small environmental load, and exhibiting excellent designability and touch feeling.SOLUTION: A container comprises: a cylindrical member which is cylindrically joined via a first joint part along a lengthwise direction; and a molded member which is joined to at least one end part of the cylindrical member via a second joint part along a circumferential direction of the cylindrical member. The cylindrical member consists of a laminate 10, 101, 102 having, in the following order, a first sealant resin layer 11 which forms an inner peripheral surface of the cylindrical member, a paper layer 12, a cellophane layer 14, and a second sealant resin layer 15 which forms an outer peripheral surface of the cylindrical member. The cylindrical member has a printed layer 13 at least in one area selected from an outer face of the paper layer 12, an inner face of the cellophane layer 14 and an outer face of the cellophane layer 14. The first joint part joins between the inner peripheral surface of the cylindrical member and the outer peripheral surface of the cylindrical member. The second joint part joins between at least the inner peripheral surface of the cylindrical member or the outer peripheral surface of the cylindrical member and the molded member.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a container. [Background technology]

[0002] Patent Document 1 describes a self-supporting cylindrical container comprising a tubular member made of a cylindrical laminated film having a bonding layer on its outermost surface which is bonded to a sealant layer on the innermost surface, a top member provided on the top surface, and a bottom member provided on the bottom surface. Patent document 2 describes a food package that includes a paper layer, a barrier layer, and a sealing layer, in which the vapor-deposited carrier layer of the barrier layer includes a biodegradable material such as polylactic acid or cellophane, and the laminate does not include metal foil.

[0003] Patent Document 3 describes a bag made from a base paper in which a film selected from a cellophane film, an EVOH-based film, or a PVA-based film is bonded to both sides of the paper, and the bag is made using a vinyl acetate-based adhesive. Patent Document 4 describes a bag-shaped cigarette butt bag in which the printed side of printed prene cellophane is placed on one side of a piece of paper, and aluminum foil is placed on the other side of the paper, and the two are heated and pressed together so that the polyethylene resin surfaces coated on the aluminum foil face each other.

[0004] Patent Document 5 describes a method for producing a wood-flour-containing resin injection-molded article, in which wood flour is mixed with a random polypropylene resin and the mixture is injected into a mold by an injection molding machine to obtain a molded article. Patent Document 6 describes a bag-in-box that includes a box body made of cardboard, a flexible inner bag contained inside the box body, and a pouring outlet joined to the inner bag, the inner bag being made of a material containing biomass-derived polyolefin resin, and the pouring outlet being made of polyolefin resin with a biomass content of 40 to 80%.

[0005] Patent Document 7 describes a spout for a packaging bag that is colored black, different from normal spouts, by using a synthetic resin containing a high concentration of bamboo charcoal. Patent Document 8 describes a spout for packaging bags that is brown in color, different from normal spouts, due to the synthetic resin to which a high concentration of wood chips has been added. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2020-1715 A [Patent Document 2] Special Publication No. 2014-509564 [Patent Document 3] Japanese Patent Application Publication No. 6-24454 [Patent Document 4] Japanese Patent Application Publication No. 3-251163 [Patent Document 5] Patent No. 5169789 [Patent Document 6] Patent No. 6323969 [Patent Document 7] Design Registration No. 1646903 [Patent Document 8] Design Registration No. 1647187 Summary of the Invention [Problem to be solved by the invention]

[0007] In recent years, attempts have been made to reduce the amount of plastic used in container packaging and to increase the amount of biodegradable materials used, such as paper and cellophane. However, in fields where plastic containers have traditionally been used, when trying to replace them with paper or cellophane, it is not easy to reproduce the luxurious design of plastic, and the feel is also inferior.

[0008] The present invention has been made in consideration of the above circumstances, and an object of the present invention is to provide a novel container that has a small environmental impact and is excellent in design and feel. [Means for solving the problem]

[0009] In order to solve the above-mentioned problem, the present invention provides a container having tubular members joined into a cylindrical shape via a first joint along the length direction, and a molded member joined to at least one end of the tubular member via a second joint along the circumferential direction of the tubular member, wherein the tubular member is composed of a laminate having, in this order, a first sealant resin layer forming an inner surface of the tubular member, a paper layer, a cellophane layer, and a second sealant resin layer forming an outer surface of the tubular member, the laminate having a printed layer in at least one location selected from the outer surface of the paper layer, the inner surface of the cellophane layer, and the outer surface of the cellophane layer, the first joint being formed by joining the inner surface of the tubular member and the outer surface of the tubular member, and the second joint being formed by joining at least the inner surface of the tubular member or the outer surface of the tubular member and the molded member.

[0010] The cellophane layer may be made of ordinary cellophane (PT), and the printed layer may be formed by printing on one side of the cellophane layer. The outer peripheral surface of the molded member has a first region that is joined to the inner peripheral surface of the tubular member and a second region that is not overlapped with the tubular member, and the second joint may be such that the outer peripheral surface of the molded member in the second region is aligned with the outer peripheral surface of the tubular member joined to the first region.

[0011] The first sealant resin layer and the second sealant resin layer may contain a biomass resin, and the molded member may be molded from a molding resin containing biomass powder and a biomass resin. The biomass resin of the first sealant resin layer and the second sealant resin layer may contain at least one selected from biomass polyethylene, biomass polypropylene, biomass polyethylene terephthalate, and biomass polylactic acid.

[0012] The molding resin may contain at least one type of biomass resin selected from biomass polyethylene, biomass polypropylene, biomass polyethylene terephthalate, and biomass polylactic acid. The molding resin may contain at least one type of biomass powder selected from wood powder, bamboo powder, rice powder, charcoal powder, bamboo charcoal powder, and cellulose powder.

[0013] The molded member may be joined to one end of the tubular member, and a bottom member made of the laminate may be joined to the other end of the tubular member. A first molded member made of the molded member may be joined to one end of the tubular member, and a second molded member made of the molded member may be joined to the other end of the tubular member. A first molded member made of the molded member may be joined to one end of the tubular member, and the other end of the tubular member may be joined with the inner surfaces of the tubular members facing each other. The molded member may have an opening for removing the contents. The tubular member may be such that the inner circumferential surface of the tubular member and the first sealant resin layer do not contain an antistatic agent, and the cellophane layer is an antistatic layer. Effect of the Invention

[0014] According to the present invention, it is possible to provide a novel container which has a small environmental impact and is excellent in design and feel. [Brief description of the drawings]

[0015] [Figure 1] 1A, 1B, and 1C are cross-sectional views showing examples of a laminate constituting a tubular member. [Diagram 2] 4 is a cross-sectional view showing an example of a body portion to which a tubular member is joined via a first joint. FIG. [Diagram 3] 6 is a cross-sectional view showing an example of a second joint between a tubular member and a molded member. FIG. [Figure 4] FIG. 1 is a perspective view showing a cylindrical container as a container of a first embodiment. [Diagram 5] FIG. 11 is a perspective view showing a tube container as a container according to a second embodiment. [Figure 6] FIG. 11 is a perspective view showing a jar container as a container according to a third embodiment. [Figure 7] FIG. 13 is a perspective view showing a rod-shaped container as a container according to a fourth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0016] Hereinafter, the present invention will be described based on preferred embodiments with reference to the drawings.

[0017] <Embodiment of the container> 1(a), 1(b), and 1(c) show examples of laminates 10, 101, and 102 constituting a tubular member in a container according to an embodiment. Fig. 2 shows an example of a body portion 20 to which a tubular member 21 is joined via a first joint portion 22. Fig. 3 shows an example of a second joint portion 24 to which a molded member 23 is joined to the end portion of the tubular member 21.

[0018] In the container of the embodiment, the body 20 for accommodating the contents is formed from a tubular member 21 joined into a tubular shape via a first joint 22 along the longitudinal direction. As shown in Figures 1(a) to (c), the tubular member 21 uses a laminate 10, 101, 102 having a first sealant resin layer 11, a paper layer 12, a cellophane layer 14, and a second sealant resin layer 15 in this order.

[0019] The first sealant resin layer 11 forms an inner peripheral surface of the tubular member 21, and the second sealant resin layer 15 forms an outer peripheral surface of the tubular member 21. In the following description, the first sealant resin layer 11 and the second sealant resin layer 15 may be collectively referred to as the sealant resin layer 11, 15.

[0020] In this specification, the longitudinal direction of the tubular member 21 is the direction connecting one end and the other end of the tubular member 21. The circumferential direction of the tubular member 21 is the direction along the annular cross section of the tubular member 21 in a cross section intersecting with the longitudinal direction. The radial direction of the tubular member 21 is the direction connecting an arbitrary point on the annular cross section of the tubular member 21 to the center point in a plane intersecting with the longitudinal direction.

[0021] The paper layer 12 is formed from a paper sheet. Examples of fibers constituting the paper include plant fibers, animal fibers, mineral fibers, synthetic fibers, and regenerated fibers. From the viewpoint of reducing the dependency of the laminates 10, 101, and 102 on petroleum, paper manufactured by agglutinating plant fibers such as wood pulp, bamboo pulp, straw pulp, bast fibers, seed hair fibers, leaf vein fibers, and grass fibers is preferred. Since the sealant resin layers 11 and 15 are laminated on both sides of the laminates 10, 101, and 102, it is not necessary to provide a resin layer on the paper itself that forms the paper layer 12. From the viewpoint of making the laminates 10, 101, and 102 thin and facilitating the processing of the cylindrical member 21, the basis weight of the paper layer 12 is set to 7 to 60 g / m2. 2 It is preferable to set the temperature to about 100° C.

[0022] The color of the paper layer 12 is not particularly limited, and may be white, brown, yellow, or other colored. When coloring the paper layer 12, a coloring material such as a dye may be added to the pulp at the papermaking stage, or a coloring material such as a dye may be adsorbed on the paper layer 12 after papermaking. The paper layer 12 may have two or more colors for each region by gradation, pattern, etc., and the coloring may form a pattern. When the printed layer 13 is formed on the entire surface of the laminate 10, 101, 102, the paper layer 12 can be made invisible from the outer surface of the laminate 10, 101, 102. A part or all of the regions of the paper forming the paper layer 12 may be colored by dyeing, metal deposition, or the like. In this case, the colored paper layer 12 can be visible from the outer surface of the laminate 10, 101, 102 by omitting a part of the printed layer 13, etc.

[0023] The cellophane layer 14 is highly transparent and glossy. For example, as shown in Fig. 1(a), when a printed layer 13 is laminated between the paper layer 12 and the cellophane layer 14, the design of the printed layer 13 can be made visible from the outside of the laminate 10 through the cellophane layer 14. Even when the printed layer 13 is not laminated between the paper layer 12 and the cellophane layer 14 as shown in Fig. 1(b), the design of the paper layer 12 can be made visible from the outside of the laminate 101 when an area where the printed layer 13 is not formed is formed in part of the laminate 101.

[0024] 1(c), when printed layers 13 are laminated on both sides of the cellophane layer 14, the designs of these printed layers 13 can be overlapped and made visible from the outside of the laminate 102. Although not particularly shown, when printed layers 13 are formed on the outer surface of the paper layer 12 and the inner surface of the cellophane layer 14 between the paper layer 12 and the cellophane layer 14, the designs of these printed layers 13 can also be overlapped and made visible from the outside of the laminate 102.

[0025] Since the first sealant resin layer 11 and the second sealant resin layer 15 are laminated on both sides of the laminates 10, 101, 102, it is not necessary to provide a resin layer on the cellophane itself that forms the cellophane layer 14. When a resin layer is laminated on the cellophane layer 14 before being laminated with the paper layer 12, the second sealant resin layer 15 may be laminated on one side of the cellophane layer 14.

[0026] Generally, cellophane is classified into moisture-proof cellophane (MST) having a moisture-proof resin layer and normal cellophane (PT) having no moisture-proof resin layer. In the laminates 10, 101, 102 of the embodiments, the cellophane layer 14 can be formed from normal cellophane (PT). PT stands for plain and transparent. The thickness of cellophane is generally indicated by count, and #300, #350, #400, #500, etc. are commonly used for packaging. For example, #300 has a basis weight of 30 g / m2. 2This corresponds to a thickness of about 20 μm. The higher the number, the greater the basis weight and thickness. An example of the thickness of cellophane is 38 μm.

[0027] The printed layer 13 may be formed on the outer surface of the paper layer 12, or on the inner surface of the cellophane layer 14, or on the outer surface of the cellophane layer 14. The printed layer 13 can be formed on one or more surfaces selected from the outer surface of the paper layer 12, the inner surface of the cellophane layer 14, and the outer surface of the cellophane layer 14. The printed layer 13 can be formed from an ink layer containing a coloring material such as a pigment or dye, and a binder such as a resin or oil.

[0028] By performing printing using the paper layer 12 as a printing substrate, the printed layer 13 can be formed on the outer surface of the paper layer 12. In this case, an adhesive layer (not shown) may be laminated between the cellophane layer 14 and the paper layer 12 having the printed layer 13. Also, by performing printing using the cellophane layer 14 as a printing substrate, the printed layer 13 can be formed on the inner surface or outer surface of the cellophane layer 14. In this case, an adhesive layer (not shown) may be laminated between the paper layer 12 and the cellophane layer 14 having the printed layer 13. It is also possible to form the printed layer 13 on each of the paper layer 12 and the cellophane layer 14. In this case, an adhesive layer (not shown) may be laminated between the paper layer 12 having the printed layer 13 and the cellophane layer 14 having the printed layer 13.

[0029] When forming the printed layer 13 by printing on one side of the cellophane layer 14, it is preferable to form the printed layer 13 on ordinary cellophane (PT). If the printed surface of the cellophane layer 14 is smooth, it is preferable because it is easy to form a high-definition printed layer 13. It is preferable to form a solid printed printed layer 13 on the entire surface of the cellophane layer 14 and then overlay a pattern printed printed layer 13 on it. The pattern print may be a pattern print including multiple colors. The number of colors in the multi-color print is not particularly limited, but examples include 2 colors, 3 colors, 4 colors, 5 colors, 6 colors, 7 colors, and 8 colors. The pattern print may be laminated on the entire surface of the solid print. The pattern print may be laminated only on a partial area of ​​the solid print. Two or more layers of pattern print may be laminated. When forming the printed layer 13 on the outer surface of the cellophane layer 14, the printed layer 13 may be a printed layer 13 that transmits the gloss of the cellophane layer 14, or a printed layer 13 that conceals the gloss of the cellophane layer 14.

[0030] Examples of the sealant resin that forms the sealant resin layers 11 and 15 include at least one of polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET) and polylactic acid (PLA), cyclic olefin resins such as cycloolefin polymer (COP) and cycloolefin copolymer (COC), thermoplastic resins, adhesive resins, and coating agents.

[0031] At least one of the sealant resin layers 11 and 15 preferably contains a biomass resin. The sealant resin may be a mixture of a biomass resin and another resin. The sealant resin may be a biomass resin alone. Examples of biomass resins that can be used as the sealant resin include biomass polyethylene, biomass polypropylene, biomass polyethylene terephthalate, and biomass polylactic acid.

[0032] Synthetic resins derived from fossil fuels such as petroleum contain radioactive carbon ( 14 C), whereas biomass resin derived from biomass such as plants contains 14The ratio of carbon derived from biomass (biomass ratio) is: 14 It can be measured based on the content of C. The biomass degree of the biomass resin is preferably 50% or more, more preferably 80% or more, and most preferably 100%.

[0033] Since the second sealant resin layer 15 is laminated on the printed layer 13 and the cellophane layer 14, it is preferable that the second sealant resin layer 15 is a highly transparent sealant resin so that at least one of the printed layer 13 and the cellophane layer 14 can be visually recognized from the outer surface of the laminate 10, 101, 102. It is also possible to make the coloring of the printed layer 13 and the gloss of the cellophane layer 14 visible from the outside of the laminate 10, 101, 102 by superimposing them. For example, low-density polyethylene (LDPE) and linear low-density polyethylene (LLDPE), which have lower crystallinity than high-density polyethylene (HDPE), are preferable because they have excellent heat sealability and transparency.

[0034] The thickness of the laminates 10, 101, 102 is preferably 500 μm or less as the total thickness of each layer, and may be about 350 μm or about 200 μm. The ratio of the paper layer 12 to the thickness of the laminates 10, 101, 102 is, for example, 5 to 95%, 10% to 90%, 20% to 80%, etc. The ratio of the cellophane layer 14 to the thickness of the laminates 10, 101, 102 is, for example, 5 to 95%, 10% to 90%, 20% to 80%, etc. The ratio of the total thickness of the sealant resin layers 11, 15 to the thickness of the laminates 10, 101, 102 is, for example, 5 to 95%, 10% to 90%, 20% to 80%, etc. In the laminates 10, 101, and 102, the balance of the materials, thicknesses, etc. of the paper layer 12, cellophane layer 14, and sealant resin layers 11 and 15 can be designed as appropriate.

[0035] For example, the puncture strength may be covered with a cellophane layer 14 of appropriate thickness to maintain the strength during transportation and facilitate transportation. Although a general resin film has the drawbacks of being difficult to tear by hand and easily charged with static electricity, by making the sealant resin layers 11, 15 very thin or forming a cut in a part of the sealant resin layers 11, 15, the paper layer 12 or the cellophane layer 14 can be expected to have good tearability by hand and suppress static electricity. In addition, by making the sealant resin layers 11, 15 sufficiently thick, the hand tearability of the cellophane layer 14 can be suppressed and the tear resistance of the laminates 10, 101, 102 can be improved. By arranging the paper layer 12 or the cellophane layer 14 of appropriate thickness parallel to the film surface of the laminates 10, 101, 102, the self-supporting property of the tubular member 21 is improved, the buckling is suppressed, and the deformation resistance and shape retention of the tubular member 21 can be improved. Excellent heat resistance can be achieved by thinning the sealant resin layers 11 and 15. The paper layer 12 is used on the inside of the transparent cellophane layer 14, so that the color and texture of the paper can be utilized.

[0036] The laminates 10, 101, 102 may have layers other than the above-mentioned layers. For example, a transparent resin film may be laminated between the cellophane layer 14 and the second sealant resin layer 15 as a base layer, a reinforcing layer, etc. The transparency of the transparent resin film is not limited to colorless transparency, and may be colored transparency. A desired resin film may be laminated between the paper layer 12 and the first sealant resin layer 11 as a base layer, a reinforcing layer, etc. As a resin layer other than the sealant resin layers 11, 15, the material of the resin film that can be laminated on the intermediate layer of the laminates 10, 101, 102 is not particularly limited, but may include polyamide resins such as nylon; polyester-based resins such as polyethylene terephthalate; polyolefin-based resins such as polyethylene-based resins, oriented polypropylene resins, and cyclic olefin-based resins.

[0037] The laminates 10, 101, 102 may be packaging materials without a barrier layer. The laminates 10, 101, 102 may be packaging materials with a barrier layer. The barrier layer is a layer that reduces the permeability of water vapor or oxygen. Examples of the barrier layer of the laminates 10, 101, 102 include a metal foil such as aluminum foil, a resin film on which a metal such as aluminum or a metal oxide such as silica or alumina is vapor-deposited. The laminates 10, 101, 102 may be provided with one or more functionalities such as an oxygen absorbing function, an odor absorbing function, and a non-adsorbing function.

[0038] Even when the laminates 10, 101, 102 do not have a barrier layer, the sealant resin layers 11, 15 are laminated on both sides of the laminates 10, 101, 102, so that the permeability of water vapor, oxygen, etc. can be reduced compared to the paper layer 12 or the cellophane layer 14. The sealant resin layers 11, 15 preferably have lower permeability than the paper layer 12 or the cellophane layer 14. By covering the entire surface of the paper layer 12 with the first sealant resin layer 11, or covering the entire surface of the cellophane layer 14 with the second sealant resin layer 15, the water absorption of the laminates 10, 101, 102 can be suppressed, and the water resistance of the laminates 10, 101, 102 can be improved. In addition, wrinkles and poor appearance of the laminates 10, 101, 102 caused by moisture absorption of the paper layer 12 or the cellophane layer 14 can be suppressed.

[0039] As shown in FIG. 2, the first joint 22 is formed by joining between the inner peripheral surface 21a of the tubular member 21 and the outer peripheral surface 21b of the tubular member 21. In the first joint 22, the inner peripheral surface 21a and the outer peripheral surface 21b, which are both sides in the thickness direction of the tubular member 21, are opposed to each other, so that the first joint 22 is formed along the circumferential direction of the tubular member 21. In this case, the first joint 22 does not protrude in the radial direction of the tubular member 21, unlike the case where the inner peripheral surfaces 21a of the tubular member 21 are joined together or the outer peripheral surfaces 21b of the tubular member 21 are joined together. This can improve the design and feel of the first joint 22.

[0040] To form the first bonding portion 22, the first sealant resin layer 11 of the laminated body 10, 101, 102 is disposed on the inner circumferential surface 21a of the tubular member 21, and the second sealant resin layer 15 of the laminated body 10, 101, 102 is disposed on the outer circumferential surface 21b of the tubular member 21. The first bonding portion 22 is formed by heat sealing the first sealant resin layer 11 and the second sealant resin layer 15. Compared to a case where the tubular members 21 are bonded by partial application of adhesive, there is no problem of adhesive overflow or insufficient application, and bonding can be performed reliably.

[0041] When joining the first joint 22, at least one of the sealant resins of the sealant resin layers 11, 15 in the laminates 10, 101, 102 forming the tubular member 21 may melt to cover the end of the paper layer 12 or the cellophane layer 14. To cover the end of the paper layer 12 or the cellophane layer 14 at the end of the laminates 10, 101, 102 in the first joint 22, a coating agent such as resin or varnish may be applied.

[0042] The body 20 surrounds the storage space 25 for the contents with the cylindrical member 21. The inner peripheral surface 21a of the cylindrical member 21 is the surface on the side that contacts the storage space 25. The outer peripheral surface 21b of the cylindrical member 21 is the surface on the side that contacts the outside, opposite the storage space 25. Since the cylindrical member 21 has the paper layer 12 and the cellophane layer 14, it is easily deformed by external forces such as squeezing and bending, and has excellent shape retention after deformation. Therefore, the container can be easily deformed when squeezing out the contents or reducing the volume when discarding.

[0043] The contents contained in the storage space 25 are not particularly limited, and may be any liquid, solid, powder, granule, or a mixture of two or more of these. The types of contents are not particularly limited, and may include beverages, food products, seasonings, cosmetics, medicines, detergents, adhesives, household goods, industrial products, etc. Since the cellophane layer 14 has low electrostatic properties, electronic components, powders, etc. may be contained in the storage space 25.

[0044] Generally, resin films are easily charged, but since the laminates 10, 101, 102 have the highly hydrophilic cellophane layer 14, the cylindrical member 21 can have antistatic properties without containing an antistatic agent. In order to prevent the cellophane layer 14 from drying and to improve the antistatic properties (conductivity), the cellophane layer 14 may contain a hydrophilic substance such as glycerin, glycol, polyols, etc. as a moisturizing agent or softener for cellophane. Moisture is trapped between the sealant resin layers 11, 15, and the cellophane layer 14 is prevented from drying, so that the cellophane layer 14 can maintain its function as an antistatic layer.

[0045] In the laminates 10, 101, 102, an antistatic agent may be blended in the sealant resin of the first sealant resin layer 11 that contacts the contents, or an antistatic agent may be applied to the inner circumferential surface 21a of the tubular member 21, as necessary. Examples of the antistatic agent include ionic compounds, electrolytes such as surfactants, and polar substances such as polyols and polyethers. However, if an antistatic agent is used in the first sealant resin layer 11, the antistatic agent may contaminate the contents. For this reason, it is desirable that the inner circumferential surface 21a of the tubular member 21 and the first sealant resin layer 11 of the tubular member 21 do not contain an antistatic agent. In addition, moisture-proof cellophane having a resin layer on its surface is generally said to be non-static, like ordinary cellophane. Furthermore, when the first sealant resin layer 11 is electrically insulating, it is preferable to employ a thin first sealant resin layer 11 so that even if static electricity is generated on the surface (inner surface) of the first sealant resin layer 11 that comes into contact with the contents, the charge can be easily diffused through the cellophane layer 14.

[0046] The shape of both end faces of the tubular member 21 is not limited to a circle, but may be an ellipse, an oval, an egg, a polygon, etc. The shapes of both end faces of the tubular member 21 are not limited to being congruent (same shape and same dimensions), and the tubular member 21 may have a taper, for example, so that one end face is larger or smaller than the other end face. For example, the shapes of both end faces of the tubular member 21 may be different from each other, so that one end face is a circle and the other end face is a polygon, etc.

[0047] The diameter of the cylindrical member 21 is, for example, within a range of 5 to 250 mm, and preferably within a range of 10 to 200 mm. Here, when the cylindrical member 21 is a rectangular cylindrical member, the diameter refers to the distance between opposing vertices, sides, or vertices and sides, and when there are two or more of these, it is preferable that the minimum and maximum values ​​are within the above range. The diameter of the cylindrical member 21 is not particularly limited, but may be, for example, 20 mm, 50 mm, 100 mm, 150 mm, etc.

[0048] 3, the second joint portion 24 is formed by joining the molded member 23 to at least one end of the tubular member 21 along the circumferential direction of the tubular member 21. The molded member 23 may be joined to only one end of the tubular member 21. The molded member 23 may be joined to both ends of the tubular member 21. The molded member 23 may be joined to one end of the tubular member 21, and a bottom member (not shown) made of the laminate 10, 101, 102, etc. may be joined to the other end of the tubular member 21.

[0049] The second bonding portion 24 in the illustrated example is formed by bonding between the inner peripheral surface 21a or the outer peripheral surface 21b of the tubular member 21, which is made up of at least the sealant resin layers 11, 15, and the molded member 23. The molded member 23 may be bonded only to the inner peripheral surface 21a of the tubular member 21. The molded member 23 may be bonded only to the outer peripheral surface 21b of the tubular member 21. The molded member 23 may be bonded to the inner peripheral surface 21a and the outer peripheral surface 21b of the tubular member 21.

[0050] In the illustrated second joint 24, the inner peripheral surface 21a of the tubular member 21 and the outer peripheral surface 23a of the molded member 23 are overlapped and the second joint 24 is formed by heat sealing. Compared to the case where the tubular member 21 and the molded member 23 are joined by partial application of adhesive, there is no problem of adhesive overflow or insufficient application, and the joining can be performed reliably. Also, the molded member 23 may be formed on the end of the tubular member 21 by in-mold molding in which the tubular member 21 is mounted in a mold.

[0051] In the second bonding portion 24, the end of the laminate 10, 101, 102 forming the tubular member 21 is preferably covered by the molding member 23. This prevents the end of the paper layer 12 or the cellophane layer 14 of the laminate 10, 101, 102 from being exposed, suppresses water absorption of the laminate 10, 101, 102, and ensures water resistance of the laminate 10, 101, 102. Although not particularly shown, the outer periphery of the molding member 23 may be bonded to the outer periphery 21b of the tubular member 21 beyond the end of the tubular member 21.

[0052] The outer peripheral surface 23a of the molded member 23 may have a first region 26 joined to the inner peripheral surface 21a of the tubular member 21 at the second joint 24, and a second region 27 not overlapping the tubular member 21. It is preferable that the position of the outer peripheral surface 23a of the molded member 23 in the second region 27 is aligned with the position of the outer peripheral surface 21b of the tubular member 21 joined to the first region 26. This can suppress steps and positional irregularities at the second joint 24, improving the design and feel at the second joint 24. It is preferable that not only the first sealant resin layer 11 on the inner peripheral surface 21a of the tubular member 21 is joined to the first region 26 of the molded member 23, but also a part of the second sealant resin layer 15 on the outer peripheral surface 21b of the tubular member 21 is melted and joined to the second region 27 of the molded member 23.

[0053] When the second joint 24 is formed by heat sealing, the tubular member 21 may be pressed so that the end of the tubular member 21 sinks into the tubular member 23 when the surface of the tubular member 23 is melted. Since the laminates 10, 101, 102 forming the tubular member 21 include the paper layer 12 and the cellophane layer 14, the laminates 10, 101, 102 are thin and difficult to deform even if the tubular member 21 is pressed when the resin is heated and melted. When the tubular member 23 is formed together with the second joint 24 by in-mold molding, the end of the tubular member 21 may be fixed to a mold surface so that the molten resin is supplied to the end of the tubular member 21.

[0054] The molded member 23 is not particularly limited as long as it is a resin that can be bonded to the cylindrical member 21, and can be formed from a molding resin such as a thermoplastic resin, a thermosetting resin, or a photocurable resin. The molding resin may contain additives such as a filler and a stabilizer. Examples of molding resins include polyolefin resins such as polyethylene and polypropylene; polyester resins such as polyethylene terephthalate and polylactic acid; and other thermoplastic resins.

[0055] The molding resin preferably contains biomass powder and biomass resin. The molding resin may be a mixture of biomass resin and other resins. The molding resin may be only biomass resin. Examples of biomass resins that can be used as molding resins include biomass polyethylene, biomass polypropylene, biomass polyethylene terephthalate, and biomass polylactic acid. The molding resin may contain two or more types of biomass resins.

[0056] The biomass powder may be a powder derived from a plant or an animal. The plant or animal raw materials that can be used as the raw material for the biomass powder are not particularly limited, but include woody plants, herbs, wood, fibers, seeds, leather, muscle, cartilage, bones, eggshells, etc. The biomass powder may be an extraction residue after extracting substances such as fats and oils and sugars. The biomass powder may be charcoal powder obtained by carbonizing raw materials derived from plants or animals. Specific examples of the biomass powder include at least one selected from wood flour, bamboo powder, rice flour, charcoal powder, bamboo charcoal powder, and cellulose powder. The molding resin may contain two or more types of biomass powder.

[0057] Since the above-mentioned biomass powder is combustible, the generation of incineration ash can be suppressed even if the container is disposed of by incineration, compared to when a powder of a non-combustible inorganic substance, mineral, etc. is used as a filler for a molding resin. Since the combustion heat of the biomass powder is lower than that of a combustible resin such as polyolefin, damage to the incinerator can be suppressed when the discarded container is incinerated.

[0058] The proportion of the biomass powder in the molding resin (the total proportion when the molding resin contains two or more types of biomass powder) is, for example, 20 to 40% by weight. By increasing the filling proportion of the biomass powder, the proportion of the resin contained in the molded member 23 can be reduced. The proportion of the biomass resin in the molding resin (the total proportion when the molding resin contains two or more types of biomass resin) is, for example, 50 to 80% by weight. The proportion of the biomass resin and the biomass powder in the molding resin (the total proportion) is, for example, 90 to 100% by weight.

[0059] When a bottom member (not shown) made of the above-mentioned laminates 10, 101, 102 is joined to an end of the tubular member 21, at least one of the sealant resin layers 11, 15 of the laminates 10, 101, 102 forming the tubular member 21 and at least one of the sealant resin layers 11, 15 of the laminates 10, 101, 102 forming the bottom member can be opposed to each other and joined. The peripheral portion of the bottom member may be bent upward or downward along the inner peripheral surface 21a or the outer peripheral surface 21b of the tubular member 21.

[0060] The container of the embodiment can reduce the environmental load because the paper layer 12 and the cellophane layer 14 are manufactured using plant fibers as raw materials, and the sealant resin layers 11, 15 and the molded member 23 are manufactured using biomass as raw materials. If the biomass resin is made of a biodegradable resin, it is possible to impart biodegradability to the container. If the biomass resin contains a non-biodegradable resin, using biomass as a raw material can reduce the emission of carbon dioxide derived from fossil fuels when the container is incinerated.

[0061] The molded member 23 or the bottom member may be in the form of a non-flexible plate. The molded member 23 or the bottom member may be a bottom plate at the lower part of the body 20. The bottom plate is formed of, for example, a hard resin. Examples of materials constituting the bottom plate include polyolefin resins such as polyethylene (PE) and polypropylene (PP), polyester resins such as polyethylene terephthalate (PET), and biomass resins. The bottom plate can be produced by, for example, injection molding.

[0062] Heat sealing (thermal welding) can be used to join the bottom plate to the cylindrical member 21 of the body 20. The joining method by thermal welding is not particularly limited, but examples thereof include ultrasonic welding, high-frequency welding, laser welding, etc. The bottom plate and the cylindrical member 21 may be joined by an adhesive.

[0063] <Cylindrical container> 4 shows a cylindrical container 30 as a container of the first embodiment. The cylindrical container 30 comprises the above-mentioned body 20, a cap 31 that closes the spout 32a, a shoulder 32 joined to the upper end of the body 20, and a bottom 33 joined to the lower end of the body 20. The shoulder 32 can be formed from the above-mentioned molded member 23. The cylindrical container 30 in the illustrated example has a cylindrical body 20, but it is also possible to make the body 20 irregularly shaped, such as a rectangular tube.

[0064] The spout 32a may be formed on the shoulder 32 by integral molding. The cap 31 may be resealably connected to the spout 32a by a screw, elastic contraction force, or the like. The means for closing the spout 32a is not limited to the cap 31, and may be any structure. For example, a sealing film may be attached to the spout 32a, and the contents may be sucked out by inserting a straw into the film. Although not particularly shown, the spout 32a and the cap 31 may be connected via a thin portion such as a hinge. In this case, the cap 31 may also be included in the integral molded member 23.

[0065] The bottom 33 of the cylindrical container 30 is not limited to the above-mentioned laminates 10, 101, 102 or the molded member 23, but may be formed from a resin film, a paper base material, or the like. When the bottom 33 is formed from a flexible sheet such as the above-mentioned laminates 10, 101, 102 or a resin film, the peripheral portion may be bent upward or downward along the inner peripheral surface 21a or the outer peripheral surface 21b of the tubular member 21. When the printed layer 13 is not required for the bottom 33, a three-layer laminate (not shown) in which sealant resin layers 11, 15 are laminated on both sides of the paper layer 12 or cellophane layer 14 may be used.

[0066] <Tube container> 5 shows a tube container 40 as a container of the second embodiment. The tube container 40 includes the body 20 described above, a cap 41 that closes the spout 42a, and a shoulder 42 joined to one end of the body 20. The shoulder 42 can be formed from the molded member 23 described above. The other end of the body 20 is closed by a sealing portion 43 formed by closing the tubular member 21. The sealing portion 43 can be formed by heat sealing the first sealant resin layers 11 of the laminates 10, 101, 102 together on the inner circumferential surface 21a of the tubular member 21.

[0067] When closing the sealing portion 43, in the laminates 10, 101, 102 forming the tubular member 21, at least one of the sealant resins of the first sealant resin layer 11 or the second sealant resin layer 15 may melt to cover the end of the paper layer 12 or the cellophane layer 14. In order to cover the end of the paper layer 12 or the cellophane layer 14 at the end of the laminates 10, 101, 102 in the sealing portion 43, a coating agent such as resin or varnish may be applied.

[0068] <Jar container> FIG. 6 shows a jar container 50 as a container of the third embodiment. The jar container 50 includes the body 20 described above, a lid 51 that seals the upper end of the body 20 so as to be openable and closable, an annular member 52 joined to the upper end of the body 20, and a bottom 33 joined to the lower end of the body 20. If it is not necessary to seal the contents, the lid 51 may be provided with holes or with a mesh or lattice. The lid 51 and the annular member 52 may be formed from the molded member 23 described above. The bottom 53 of the jar container 50 may be formed in the same manner as the bottom 33 of the cylindrical container 30 described above.

[0069] The lid 51 in the illustrated example is connected to the annular member 52 via a hinge 54 so as to be openable and closable. The hinge 54 can be formed as a bendable thin-walled portion of the molded member 23. In this case, the lid 51 and the annular member 52 can be formed as an integrated resin molded product via the hinge 54, which is preferable from the viewpoint of reducing the number of parts, etc. The hinge 54 can also be formed by forming the lid 51 and the annular member 52 as separate molded products and connecting the lid 51 and the annular member 52 via a connecting shaft.

[0070] As a first modified example of the jar container 50, the lid 51 and the annular member 52 may be molded separately, and the lid 51 may be joined to the annular member 52 by a screw or fitting. In this case, a ring-shaped edge having a diameter smaller than the inner diameter of the lid 51 may be protruded from the upper surface of the annular member 52, and the edge of the annular member 52 and the outer periphery of the lid 51 may be overlapped in the radial direction. This allows the position of the outer periphery of the lid 51 to be aligned with the position of the outer periphery of the annular member 52. When forming a screw for joining the annular member of the lid 51 and the annular member 52, a screw thread may be formed on the outer periphery of the edge of the annular member 52, and a screw groove may be formed on the inner periphery of the lid 51. To overlap the edge of the annular member 52 and the outer periphery of the lid 51 in the radial direction, a ring-shaped edge having a diameter smaller than the inner diameter of the annular member 52 may be protruded from the lower surface of the lid 51.

[0071] As a second modified example of the jar container 50, a first annular member to be joined to the upper end of the body 20 and a second annular member to which the lid 51 is connected via a hinge 54 may be formed separately, and the second annular member may be joined onto the first annular member. In this case, the first annular member has a simple ring-like structure, and after joining the first annular member to the body 20, the second annular member to which the lid 51 is connected can be attached to the first annular member, making it easy to join the body 20 to the first annular member. The structure for joining the lid and the second annular member is not limited to the hinge 54, and the above-mentioned first modified example may be applied. For example, the lid can be joined to the second annular member by a screw, a fitting, or the like.

[0072] In the second modified example, the structure for joining the first annular member and the second annular member can be, for example, thermal welding of the resin forming the annular members, adhesion using an adhesive, insert molding in which one annular member is molded integrally with the other annular member, etc. Also, by applying the above-mentioned first modified example, the first annular member and the second annular member can be joined by, for example, screws or fitting.

[0073] A ring-shaped edge having a diameter smaller than the inner diameter of the second annular member may be protruded from the upper surface of the first annular member, and the edge of the first annular member and the second annular member may be overlapped in the radial direction. This allows the position of the outer peripheral surface of the second annular member to be aligned with the position of the outer peripheral surface of the first annular member. When forming a screw for joining the first annular member and the second annular member, a screw thread may be formed on the outer periphery of the edge of the first annular member, and a screw groove may be formed on the inner periphery of the second annular member. To overlap the edge of the first annular member and the second annular member in the radial direction, a ring-shaped edge having a diameter smaller than the inner diameter of the first annular member may be protruded from the lower surface of the second annular member.

[0074] <Rod-shaped container> 7 shows a rod-shaped container 60 as a container of the fourth embodiment. The rod-shaped container 60 includes the body 20 described above, and a first lid member 61 and a second lid member 62 that seal both ends of the body 20, respectively. The first lid member 61 and the second lid member 62 can be formed from the first molded member 23 and the second molded member 23, respectively, which are made of the molded member 23 described above. In the following description, the first lid member 61 or the second lid member 62 may be collectively referred to as the lid members 61, 62.

[0075] The rod-shaped container 60 is suitable for storing rod-shaped articles such as syringes, lipstick, and sweets. The syringe may be a pharmaceutical container already filled with an injection liquid. In order to hold the rod-shaped article as the content inside the rod-shaped container 60, a holding member of an appropriate structure may be stored in the rod-shaped container 60. The holding member may hold the rod-shaped article while being fixed to the rod-shaped container 60. The holding member holding the rod-shaped article may be stored inside the rod-shaped container 60 without being fixed to the rod-shaped container 60.

[0076] In order to prevent the rod-shaped container 60 from rolling when placed on its side, the lid members 61 and 62 may be polygonal. The polygon has about 3 to 10 corners or sides, such as a triangle, a square, a pentagon, a hexagon, a heptagon, an octagon, a nonagon, or a decagon. The shape of the body 20 is a polygonal prism having about 3 to 10 side faces on the outer circumferential surface 21b of the cylindrical member 21, such as a triangular prism, a square prism, a pentagonal prism, a hexagonal prism, a heptagonal prism, an octagonal prism, a nonagonal prism, or a decagonal prism. A protrusion may be provided on the outer periphery of the lid members 61 and 62 to prevent rolling.

[0077] At least one of the cover members 61, 62 may have an installation surface. This allows the rod-shaped container 60 to be placed upright with the installation surface facing downward. The installation surface may be a flat surface that is approximately perpendicular to the central axis of the cylindrical member 21. The outer periphery of the installation surface may be flat, with a recess on the inside of the outer periphery. Three or more protrusions may be formed on the installation surface, and the rod-shaped container 60 may be placed upright with the tips of the protrusions facing downward.

[0078] When opening the rod-shaped container 60, an outlet may be provided in at least one of the lid members 61, 62. For example, the lid members 61, 62 may be ring-shaped, with the inside serving as the outlet. To close the outlet, a closure such as a cap or plug may be attached to the lid members 61, 62. The outlet may also be formed as an opening in the body 20. When the opening in the body 20 or the lid members 61, 62 is used as the outlet, a covering material such as a film, sheet, or paper may be attached around the outlet to close it.

[0079] When opening the rod-shaped container 60, the body 20 may be broken to form an outlet. To make the tubular member 21 breakable, a break line such as a dotted line or a continuous line may be formed in at least one layer of the laminates 10, 101, 102 forming the tubular member 21. The break line may be formed, for example, by laser processing, mechanical processing, or the like. Since the paper layer 12 or the cellophane layer 14 has excellent tearability, an opening start portion such as a notch-shaped cut or a tongue-shaped tab may be formed at the end of the tubular member 21. When tearing starts from the opening start portion, a tear in the tubular member 21 can be easily formed in the desired range on the extension line.

[0080] Although the present invention has been described above based on the preferred embodiment, the present invention is not limited to the above-mentioned embodiment, and various modifications are possible within the scope of the gist of the present invention. Modifications include addition, substitution, omission, and other changes of components in the embodiment. In addition, components used in two or more examples can be appropriately combined. [Explanation of symbols]

[0081] Reference Signs List 10,101,102...Laminate, 11...First sealant resin layer, 12...Paper layer, 13...Printed layer, 14...Cellophane layer, 15...Second sealant resin layer, 20...Body, 21...Cylindrical member, 21a...Inner surface of cylindrical member, 21b...Outer surface of cylindrical member, 22...First joint, 23...Molded member, 23a...Outer surface of molded member, 24...Second joint, 25...Storage space, 26...First region, 27...Second region, 30...Cylindrical container , 31...cap of cylindrical container, 32...shoulder of cylindrical container, 32a...pouring outlet of cylindrical container, 33...bottom of cylindrical container, 40...tube container, 41...cap of tube container, 42...shoulder of tube container, 42a...pouring outlet of tube container, 43...sealing portion, 50...jar container, 51...lid portion, 52...annular member, 53...bottom of jar container, 54...hinge, 60...rod-shaped container, 61...first lid member, 62...second lid member.

Claims

1. A container having a cylindrical member joined to a cylindrical shape via a first joint along a length direction, and a molded member joined to at least one end of the cylindrical member via a second joint along a circumferential direction of the cylindrical member, the tubular member is a laminate having, in this order, a first sealant resin layer forming an inner circumferential surface of the tubular member, a paper layer, a cellophane layer, and a second sealant resin layer forming an outer circumferential surface of the tubular member; the laminate has a printed layer in at least one location selected from the outer surface of the paper layer, the inner surface of the cellophane layer, and the outer surface of the cellophane layer; The first joint portion is formed by joining an inner circumferential surface of the tubular member and an outer circumferential surface of the tubular member, The container, characterized in that the second joint portion is formed by joining at least the inner surface of the tubular member and the molded member or the outer surface of the tubular member and the molded member.

2. 2. The container according to claim 1, wherein the cellophane layer is made of ordinary cellophane (PT), and the printed layer is formed by printing on one side of the cellophane layer.

3. A container as described in claim 1 or 2, characterized in that the outer surface of the molded member has a first region that is joined to the inner surface of the tubular member and a second region that is not overlapped with the tubular member, and the second joint is characterized in that the outer surface of the molded member in the second region is aligned with the outer surface of the tubular member joined to the first region.

4. The first sealant resin layer and the second sealant resin layer contain a biomass resin, 4. The container according to claim 1, wherein the molded member is molded from a molding resin containing biomass powder and biomass resin.

5. The container according to claim 4, characterized in that the biomass resin of the first sealant resin layer and the second sealant resin layer contains at least one selected from biomass polyethylene, biomass polypropylene, biomass polyethylene terephthalate, and biomass polylactic acid.

6. The container according to claim 4 or 5, characterized in that the molding resin contains at least one type of biomass resin selected from biomass polyethylene, biomass polypropylene, biomass polyethylene terephthalate, and biomass polylactic acid.

7. The container according to any one of claims 4 to 6, characterized in that the molding resin contains at least one type of biomass powder selected from wood flour, bamboo powder, rice flour, charcoal powder, bamboo charcoal powder, and cellulose powder.

8. The molded member is joined to one end of the cylindrical member, 8. The container according to claim 1, wherein a bottom member made of the laminate is joined to the other end of the cylindrical member.

9. A first molded member made of the molded member is joined to one end of the cylindrical member, 8. The container according to claim 1, wherein a second molded member made of the molded member is joined to the other end of the cylindrical member.

10. A first molded member made of the molded member is joined to one end of the cylindrical member, 8. The container according to claim 1, wherein the other end of the cylindrical member is joined with the inner circumferential surfaces of the cylindrical members facing each other.

11. 11. The container according to claim 1, wherein the molded member has an opening for removing the contents.

12. The container according to any one of claims 1 to 11, characterized in that the tubular member does not contain an antistatic agent on the inner surface of the tubular member and on the first sealant resin layer, and the cellophane layer is an antistatic layer.

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