JP2018065600A - Head-portion molding body, tube container, production method of head-portion molding body, and production method of tube container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a head-portion molding body, a tube container, a production method of the head-portion molding body, and a production method of the tube container which realizes good sealing performance with reducing parts counts and process identification counts.SOLUTION: A head-portion molding body 113 has an opening portion 111 having an opening 15, a shoulder portion 12 ranged to the opening portion 111, and integrally an opening sealed portion 120 for sealing the opening 15. Further, a tube container 110 has a head-portion molding body 113 and a drum portion 14 ranged to the head-portion molding body 113. And further, the head-portion molding body 113 and the opening sealed portion 120 for sealing the opening 15 are formed integrally.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a head molded body, a tube container, a method for manufacturing a head molded body, and a method for manufacturing a tube container, and more particularly, a head molded body having a sealed opening, a tube container, and a head molded body. The present invention relates to a method for manufacturing a tube container and a method for manufacturing a tube container.

  Tube containers are widely used because the fluid inside is easy to squeeze out and is excellent in storage stability. In many cases, the tube container is kept sealed until the initial opening is performed.

  Patent Document 1 discloses a multilayer tube container or a multilayer sheet formed by a multilayer extrusion molding method comprising a body portion, a head portion comprising a shoulder portion and a mouth-and-neck portion, a closing member at an open end portion of the mouth-and-neck portion, and a component member of a cap. In the molded laminated tube container, there is provided a hermetic multilayer tube container characterized in that at least the innermost surface of a constituent member that comes into contact with the contents is made of a non-adsorptive resin and a sealed system is formed by the non-adsorptive resin It is disclosed.

Japanese Patent Laid-Open No. 10-086952

  According to the hermetic multilayer tube container of Patent Document 1, it is said that the content protection until the initial opening of the hermetic multilayer tube container is maintained well by the virgin seal material and the packing material as the closing member.

  However, in the hermetic multilayer tube container of Patent Document 1, it is necessary to separately prepare a closing member, which increases the number of parts and the time and effort of its manufacture. Furthermore, in the hermetic multilayer tube container of Patent Document 1, the virgin sealing material as a closing member is weakly sealed by thermal bonding so that the inner surface of the open end of the mouth and neck can be peeled off, or the packing material is previously placed in the cap. Since the process of carrying out the closing process such as by attaching an additional step, the processing procedure becomes complicated.

  Therefore, an object of the present invention is to provide a head molded body, a tube container, a method for manufacturing the head molded body, and a method for manufacturing the tube container that can realize good sealing performance while reducing the number of parts and the number of manufacturing steps. There is to do.

  In order to solve the above problems, a head molded body according to the present invention is a head molded body having a mouth portion having an opening and a shoulder portion connected to the mouth portion, and the head molded body is An opening sealing portion that seals the opening is provided integrally.

  Further, the opening sealing part has a thin part.

  Furthermore, the thin-walled portion extends along the inner periphery of the mouth portion, and the head molded body further includes a joint portion in which the connection between the mouth portion and the opening sealing portion is reinforced. .

  Furthermore, the opening sealing part has a step between the end of the opening.

  Furthermore, the tube container according to the present invention is a tube container having a head part having a mouth part having an opening, a shoulder part connected to the mouth part, and a trunk part continuing to the head part. The head molded body is integrally provided with an opening sealing portion that seals the opening.

  Further, the opening sealing part has a thin part.

  Furthermore, the thin-walled portion extends along the inner periphery of the mouth portion, and the head molded body further includes a joint portion in which the connection between the mouth portion and the opening sealing portion is reinforced. .

  Furthermore, the opening sealing part has a step between the end of the opening.

  Furthermore, the manufacturing method of the head molded body according to the present invention is a method of manufacturing a head molded body having a mouth portion having an opening and a shoulder portion connected to the mouth portion, and the head molded body, An opening sealing portion for sealing the opening is integrally formed.

  Further, the opening sealing part has a thin part.

  Furthermore, the thin-walled portion extends along the inner periphery of the mouth portion, and the head molded body further includes a joint portion in which the connection between the mouth portion and the opening sealing portion is reinforced. .

  Furthermore, the opening sealing part has a step between the end of the opening.

  Furthermore, the manufacturing method of the tube container which concerns on this invention has the head part which has the opening part which has an opening, the shoulder part which continues to the said mouth part, and the trunk | drum part which continues to the said head part formation body. The method is characterized in that the head molded body and the opening sealing portion that seals the opening are integrally formed.

  Further, the opening sealing part has a thin part.

  Furthermore, the thin-walled portion extends along the inner periphery of the mouth portion, and the head molded body further includes a joint portion in which the connection between the mouth portion and the opening sealing portion is reinforced. .

  Furthermore, the opening sealing part has a step between the end of the opening.

  According to the present invention, a head molded body having a mouth portion having an opening and a shoulder portion connected to the mouth portion, and the head shaped body integrally includes an opening sealing portion for sealing the opening. It is possible to provide a head molded body that achieves good sealing performance while reducing the number and the number of manufacturing steps.

  Furthermore, according to the present invention, there is provided a tube container having a head part having a mouth part having an opening, a shoulder part connected to the mouth part, and a trunk part continuing to the head part, and the head part is formed. Since the body is integrally provided with an opening sealing portion that seals the opening, it is possible to provide a tube container that achieves good sealing performance while reducing the number of parts and the number of manufacturing steps.

  Furthermore, according to the present invention, there is provided a method for manufacturing a head molded body having a mouth portion having an opening and a shoulder portion connected to the mouth portion, and the head molded body and an opening sealing portion for sealing the opening. Since the integral molding is performed, it is possible to provide a method of manufacturing a head molded body that realizes good sealing performance while reducing the number of parts and the number of manufacturing steps.

  Furthermore, according to the present invention, there is provided a method for producing a tube container having a mouth part having an opening, a head molded body having a shoulder part connected to the mouth part, and a trunk part continuing to the head molded object, Since the head molded body and the opening sealing portion that seals the opening are integrally formed, it is possible to provide a method for manufacturing a tube container that achieves good sealing performance while reducing the number of parts and the number of manufacturing steps. .

It is the front view by which an example of the tube container which concerns on this embodiment was shown. It is a top view in which an example of the tube container concerning this embodiment was shown. It is a front view of a head molded object. It is sectional drawing of a head molded object. It is sectional drawing of the head molded object which concerns on a modification. It is sectional drawing to which a part of tube container concerning a modification was expanded. It is a front view of the tube container which concerns on another modification. It is the front view to which a part of tube container concerning another modification was expanded. It is sectional drawing to which a part of tube container concerning another modification was expanded.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the tube container according to the present embodiment will be described in detail. FIG. 1 is a front view illustrating an example of a tube container 10 according to the present embodiment, and FIG. 2 is a plan view illustrating an example of the tube container 10 according to the present embodiment. Here, for convenience of explanation, the mouth portion 11 into which the contents accommodated in the tube container 10 are poured is set to the top.

  The tube container 10 has a head molded body 13 including a mouth part 11 and a shoulder part 12 connected to the mouth part 11. And the tube container 10 has the trunk | drum 14 which continues to the head molding 13. The mouth portion 11 formed in a cylindrical shape defines an opening 15 on the inner peripheral side thereof. The contents accommodated in the trunk portion 14 are discharged from the tube container 10 by passing through the opening 15. The shoulder portion 12 is configured in a truncated cone shape that spreads outside the tube container 10 as the distance from the mouth portion 11 increases.

  The body portion 14 is formed by forming a film-like laminate into a cylindrical shape. One end of the cylindrical portion 14 extending in a cylindrical shape is joined to the shoulder portion 12. On the other hand, the other end of the barrel portion 14 is sealed by a bottom seal portion 16 in which the inside of the cylindrical barrel portion 14 is overlapped and bonded. The bottom seal portion 16 may be bonded after the body portion 14 is filled with the contents. Especially the trunk | drum 14 of the tube container 10 is good to be comprised so that it may have the softness | flexibility which can extrude a desired quantity easily even if it is the content which has some viscosity.

  The tube container 10 may be made of a transparent material. In particular, if the shoulder portion 12 and the trunk portion 14 in the vicinity of the shoulder portion 12 are configured to be transparent, the remaining amount of the contents may be visible.

  FIG. 3 is a front view of the head molding 13. A male screw 17 is formed on the head molding 13. The external thread 17 is formed so as to protrude spirally further outward from the outer peripheral surface of the mouth portion 11. Although FIG. 3 illustrates one male screw 17, this may be multiple.

  FIG. 4 is a cross-sectional view of the head molding 13. The head molded body 13 is integrally provided with an opening sealing portion 20 that blocks passage of contents at the opening 15. That is, the head molded body 13 is configured in a state in which the same material is continuous between the mouth portion 11 and the opening sealing portion 20. The opening sealing part 20 is configured to seal the tube container 10. The opening sealing portion 20 illustrated in FIG. 4 is formed in a disc shape that covers the entire surface of the opening 15, and is formed integrally with the mouth portion 11. The opening sealing portion 20 is formed closer to the end of the opening 15 than the male screw 17.

  The opening sealing portion 20 is configured to be breakable. For example, the opening sealing portion 20 has a thin portion 21. As illustrated in FIG. 4, a groove is formed at the periphery of the opening sealing portion 20 on the opening 15 side, so that a thin portion 21 having a smaller thickness than other portions is provided. ing. The thin portion 21 is connected to the inner peripheral surface of the mouth portion 11. By making the connection part with the mouth part 11 of the opening sealing part 20 into the thin part 21, the opening sealing part 20 can be easily broken from the mouth part 11.

  In addition, the opening sealing part 20 should just be comprised so that fracture | rupture is possible. For example, the thin-walled portion 21 does not necessarily have to be continuous with the periphery of the opening sealing portion 20 and may be configured to be scattered. Furthermore, the thin portion 21 may have a ten shape or a minus shape in plan view.

  By having the opening sealing part 20, the tube container 10 in a state where the mouth part 11 is sealed in the initial state can be manufactured. Therefore, it is widely used for sealing, and it is not necessary to adhere an easy-open seal that is peeled off at the time of initial opening to the end of the mouth portion 11, and the number of parts and the manufacturing process can be reduced. Furthermore, it is possible to save time and effort to remove the easy-open seal when using the tube container 10.

  As a function of preventing the broken opening sealing portion 20 from falling off, a connecting portion 22 in which the connection between the mouth portion 11 and the opening sealing portion 20 is strengthened may be formed. For example, the connecting portion 22 is formed in a thick structure at a location where the opening sealing portion 20 is connected to the mouth portion 11. The connecting portion 22 maintains the connection with the mouth portion 11 of the broken opening sealing portion 20.

  In addition, the thin part 21 may be abbreviate | omitted in the part which overlaps with the connection part 22 by planar view of what may be formed over the perimeter of the opening sealing part 20. FIG. Further, in the case of a configuration in which the thin portion 21 is partially omitted, the opening sealing portion 20 may function so as to be prevented from falling off at that portion, and the connecting portion 22 may be omitted. good.

  The thickness La of the opening sealing portion 20 is formed to be at least smaller than the thickness of the side periphery of the mouth portion 11. If the thickness La of the opening sealing portion 20 is too large, the required amount of material increases. If the thickness La is too small, the strength is weakened and it is easy to break unintentionally. Furthermore, in the case where the head molded body 13 does not have the thin portion 21, if the thickness La of the opening sealing portion 20 is too large, the opening sealing portion 20 is not easily broken, which is not preferable. Therefore, the thickness La of the opening sealing portion 20 is more preferably 1.0 mm or more and 2.0 mm or less.

  If the thickness Lb of the thin-walled portion 21 is too large, the opening sealing portion 20 does not function as the thin-walled portion 21 and is difficult to break, and if it is too small, the opening-sealed portion 20 is difficult to mold and the strength of the thin-walled portion 21 is reduced. Becomes weak and the opening sealing portion 20 is easily broken unintentionally. Therefore, the thickness Lb of the thin portion 21 is more preferably 0.2 mm or more and 0.5 mm or less.

  FIG. 5 is a cross-sectional view of a head molded body 113 according to a modification. The position of the opening sealing portion 120 included in the head molding 113 is different from that of the opening sealing portion 20 of the head molding 13.

  Here, as illustrated in FIG. 4, it is also possible to form the opening sealing portion 20 provided in the tube container 10 and the head molded body 13 flush with the end of the opening 15, that is, the end of the mouth portion 11. It is. However, when the head molded body 13 is manufactured by compression molding (compression molding), the mold opens at the end of the mouth portion 11. As a result, a parting line, which is a bulge generated in a line to be divided in the mold, is generated at the end of the mouth portion 11 and there is a tendency that burrs are generated or the dimensional accuracy of the molded product is difficult to be obtained. Therefore, it is more preferable to have a step between the ends of the opening 15 like the opening sealing portion 120 illustrated in FIG.

  On the other hand, since accuracy is required for the external thread 17, it is necessary that the parting line does not cross. Therefore, it is preferable that the step of the opening sealing portion 120 from the end of the opening 15 is in a range where the opening sealing portion 120 and the male screw 17 do not overlap with each other in view of the thickness of the opening sealing portion 120. . 4 and 5, the dividing line 23 of the mold is indicated by a two-dot chain line.

  FIG. 6 is an enlarged cross-sectional view of a part of the tube container 110 according to the modification. In the tube container 110, one end of the body portion 14 in which a film-like laminate is formed into a cylindrical shape is joined to the shoulder portion 12 of the head-shaped body 113.

  The tube container 10 and the tube container 110 (hereinafter collectively referred to as the tube container 110) are fitted to the mouth portion 11 and the mouth portion 111 (hereinafter collectively referred to as the mouth portion 111), and the tube after initial opening. A lid such as an overcap (not shown) for resealing the container 110 may be provided. An unillustrated female screw corresponding to the male screw 17 is formed in the overcap. By providing the overcap with the tube container 110, the mouth portion 111 can be stably placed downward.

  Various modifications can be made to the structure of attaching the tube container 110 to the overcap. FIG. 7 is a front view of a tube container 210 according to another modification.

  The tube container 210 has a head molded body 213 constituted by a mouth portion 211 and a shoulder portion 12 connected to the mouth portion 211. And the tube container 210 has the trunk | drum 14 which continues in a head molded object 213. FIG. The tube container 210 has the same configuration as that of the tube container 110 except that the mouth portion 211 constituting the head molded body 213 is different. By providing the tube container 210 with the overcap, the mouth portion 211 can be stably placed downward.

  FIG. 8 is a front view in which a part of a tube container 210 according to another modification is enlarged. A protrusion 217 is formed on the head molded body 213 instead of the male screw 17. The method of attaching the overcap to the tube container 10 is a so-called plugging type. The head molded body 213 has the same configuration as the head molded body 113 except that the head molded body 213 has projections 217.

  The mouth portion 211 is formed with a protrusion 217 projecting annularly further outward from the outer peripheral surface. The protrusion 217 includes a guide surface 218 on the opening 15 side and a return surface 219 on the shoulder 12 side. The guide surface 218 is configured by a gentle slope that spreads outward from the tube container 210 as the distance from the end of the opening 15, that is, the end of the mouth portion 211 is increased. On the other hand, the return surface 219 is configured by a steep slope that narrows toward the inside of the tube container 210 as the distance from the end of the opening 15 increases. The return surface 219 may be perpendicular to the outer peripheral surface of the mouth portion 211.

  FIG. 9 is an enlarged cross-sectional view of a part of a tube container 210 according to another modification. An opening sealing portion 120 that seals the opening 15 is also formed integrally with the mouth portion 211 in the head molded body 213. The opening sealing portion 120 is formed closer to the end of the opening 15 than the protrusion 217.

  A projection (not shown) corresponding to the projection 217 is formed on the overcap provided in the tube container 210 and the head molded body 213. When the overcap is attached to the tube container 210, the protrusion of the overcap gets over the protrusion 217 of the tube container 210, and the overcap is not easily removed from the tube container 210.

  There is no particular limitation on the method of breaking the opening sealing portion 20 and the opening sealing portion 120 (hereinafter collectively referred to as the opening sealing portion 20). For example, the opening sealing portion 20 may be broken by providing a protrusion (not shown) on the side opposite to the side on which the overcap is fitted and inserting the opposite side of the overcap into the opening 15. It is preferable that the protrusion is configured in a shape along the thin portion 21. Further, when the opening sealing portion 20 has a sufficiently large area, the opening sealing portion 20 may be broken by pushing the finger.

  You may have the knob part which is not shown in figure for fracture | rupturing the opening sealing part 20. FIG. For example, the knob portion is configured such that a support column extends from the upper surface side of the opening sealing portion 20 and has an annular pull ring in the vertical direction from the support column. And the opening sealing part 20 may be fractured | ruptured by putting a finger on a pull ring and being pulled.

  The head molded body 13 (113, 213, hereinafter collectively referred to as the head molded body 13) has a mouth portion 11 (111, 211, hereinafter collectively referred to as the mouth portion 11) and a shoulder portion 12 having an appropriate amount. A material that can be molded so as to be hard, has high adhesion to the material of the body portion 14, does not affect the quality of the contents, and does not have a sanitary problem even when contacting the contents. As such a material, a thermoplastic resin is used for the head molded body 13, and more specifically, high-density polyethylene is used.

  Further, the head molded body 13 includes polyolefin resins such as low density polyethylene, linear low density polyethylene, medium density polyethylene, polypropylene (homopolypropylene, block polypropylene, random polypropylene), olefins, vinyl monomers, A copolymer with an acrylic monomer, a copolymerizable monomer such as an unsaturated carboxylic acid, a polyolefin resin such as a blend composition thereof, and a resin in which the above resin is blended with high-density polyethylene are used. Also good. Further, from the viewpoint of heat resistance and thermal adhesiveness with the body portion 14, a resin in which high-density polyethylene is blended with linear low-density polyethylene is preferably used for the head molded body 13. Further, a Rondell molded body having a truncated cone shape as a barrier material may be laminated on the head molded body 13 in particular on the shoulder 12 in order to prevent permeation of gas such as oxygen.

  And it is preferable that the thickness of the head molded body 13 in which such resin is used is 0.5 mm or more and 1.5 mm or less.

  The body 14 is made of a material that has flexibility, has high adhesiveness with the material of the head molding 13, does not affect the quality of the contents, and does not sanitize even if it comes into contact with the contents. It is done. As such a material, a laminated body mainly made of a thermoplastic resin is used for the body portion 14, and more specifically, the innermost layer contacting the contents is a low density polyethylene, a linear low density polyethylene, etc. For the outermost layer, polyethylene, polyethylene terephthalate, or the like is used. For the intermediate layer, polyethylene terephthalate on which aluminum oxide or silicon oxide is deposited, aluminum foil, biaxially stretched polyamide, or the like is used.

  The head molding 13 may be formed by integrally forming the opening sealing portion 20. Since the head molded body 13 has the opening sealing portion 20, a process of manufacturing an easy-open seal and a process of bonding the easy-open seal to the end of the mouth portion 11 are not required. For manufacturing the head molded body 13, compression molding (compression molding) or injection molding (injection molding) can be used. In injection molding, it can be processed into a more complex shape.

  For the production of the body portion 14, a method can be used in which a film-like laminate is rolled into a cylindrical shape and the overlapping end portions are welded. The body portion 14 may be heat-welded to a pre-formed head molded body 13 or may be welded simultaneously when the head molded body 13 is molded. The tube container 10 in which the cylindrical body 14 is mounted on a mold and compression-molded together with the head molded body 13 has a strong adhesive strength between the head molded body 13 and the body 14 and can be easily mass-produced. Is possible.

  The contents accommodated in the tube container 10 can be injected from the lower end of the trunk portion 14 (see FIG. 1 and the like). The contents of the tube container 10 can be filled with fluidity. More specifically, the contents of the tube container 10 include seasonings such as soy sauce, undiluted beverage concentrates, salad oils, grocery products such as toothpaste, toiletries such as shampoos and toothpastes, skin lotions, perfumes, and facial creams. It can be filled regardless of the type of medicine such as cosmetics, disinfectant, ointment, etc. The lower end of the body portion 14 of the tube container 10 filled with the contents is heat-sealed, and a bottom seal portion 16 (see FIG. 1 and the like) is formed to obtain a filling body.

  As described above, the head molded body 13 according to the present embodiment is a head molded body 13 having the mouth portion 11 having the opening 15 and the shoulder portion 12 connected to the mouth portion 11, and the head molded body. 13 integrally includes an opening sealing portion 20 that seals the opening 15, so that it is possible to provide the head molded body 13 that achieves good sealing performance while reducing the number of parts and the number of manufacturing steps.

  Furthermore, the tube container 10 according to the present embodiment includes a head part 13 having a mouth part 11 having an opening 15 and a shoulder part 12 connected to the mouth part 11, and a body part 14 continuing to the head part 13. Since the head molded body 13 is integrally provided with an opening sealing portion 20 that seals the opening 15, good sealing performance is realized while the number of parts and the number of manufacturing steps are reduced. A tube container 10 can be provided.

  Furthermore, the manufacturing method of the head molded body 13 according to the present embodiment is a method of manufacturing the head molded body 13 having the mouth portion 11 having the opening 15 and the shoulder portion 12 connected to the mouth portion 11. Since the part molded body 13 and the opening sealing part 20 that seals the opening 15 are integrally formed, a method of manufacturing the head molded body 13 that achieves good sealing performance while reducing the number of parts and the number of manufacturing steps is provided. Can be provided.

  Furthermore, the manufacturing method of the tube container 10 according to the present embodiment includes a head molded body 13 having a mouth portion 11 having an opening 15 and a shoulder portion 12 continuous with the mouth portion 11, and a body continuous with the head molded body 13. This is a method for manufacturing a tube container 10 having a portion 14, and the head molded body 13 and the opening sealing portion 20 that seals the opening 15 are integrally formed, so that the number of parts and the number of manufacturing steps are reduced while being good. It is possible to provide a method of manufacturing the tube container 10 that achieves excellent sealing performance.

  This indication can be used suitably for tube container 10 which stores the contents which have fluidity. However, the present disclosure is not limited to the above-described embodiments. The contents filled in the tube container 10 of the present disclosure are not particularly limited as long as it has fluidity and can be used by pouring out. Cosmetics such as shampoos, detergents such as liquid detergents and softeners, pharmaceuticals, miscellaneous goods Daily products such as goods, foods such as beverages and seasonings, industrial products such as adhesives, and others. Furthermore, since the tube container 10 according to the present disclosure is excellent in the sealing performance before the initial opening, it is also suitable for the contents that are stored for a long period of time.

DESCRIPTION OF SYMBOLS 10 Tube container 11, 111, 211 Mouth part 12 Shoulder part 13, 113, 213 Head molded object 14 Trunk part 15 Opening 20, 120 Opening sealing part

Claims (16)

A mouth having an opening;
A head molded body having a shoulder connected to the mouth,
The head molded body is
A head molded body comprising an opening sealing portion for sealing the opening integrally. The opening sealing portion is
It has a thin part, The head molded object according to claim 1 characterized by things. The thin portion extends along the inner periphery of the mouth,
The head molded body is
The head molded body according to claim 2, further comprising a joint portion in which the coupling between the mouth portion and the opening sealing portion is reinforced. The opening sealing portion is
The head molded body according to any one of claims 1 to 3, further comprising a step between the end of the opening. A head molded body having a mouth part having an opening and a shoulder part connected to the mouth part;
A tube container having a body part continuous with the head molded body,
The head molded body is
An opening sealing part that seals the opening is provided integrally with the tube container. The opening sealing portion is
The tube container according to claim 5, further comprising a thin portion. The thin portion extends along the inner periphery of the mouth,
The head molded body is
The tube container according to claim 6, further comprising a connecting portion in which the connection between the mouth portion and the opening sealing portion is reinforced. The opening sealing portion is
The tube container according to any one of claims 5 to 7, further comprising a step between the end of the opening. A mouth having an opening;
A method for producing a head-molded body having a shoulder connected to the mouth,
A method of manufacturing a head-molded body, comprising integrally molding the head-molded body and an opening sealing portion that seals the opening. The opening sealing portion is
It has a thin part, The manufacturing method of the head molded object of Claim 9. The thin portion extends along the inner periphery of the mouth,
The head molded body is
The method of manufacturing a head molded body according to claim 10, further comprising a joint portion in which the coupling between the mouth portion and the opening sealing portion is reinforced. The opening sealing portion is
The method of manufacturing a head molded body according to any one of claims 9 to 11, wherein a step is formed between the ends of the opening. A head molded body having a mouth part having an opening and a shoulder part connected to the mouth part;
It is a manufacturing method of a tube container having a body part continuous with the head molded body,
The method of manufacturing a tube container, wherein the head molded body and an opening sealing portion that seals the opening are integrally formed. The opening sealing portion is
It has a thin part, The manufacturing method of the tube container of Claim 13 characterized by the above-mentioned. The thin portion extends along the inner periphery of the mouth,
The head molded body is
The tube container manufacturing method according to claim 14, further comprising a connecting portion in which the connection between the mouth portion and the opening sealing portion is reinforced. The opening sealing portion is
The method for manufacturing a tube container according to any one of claims 13 to 15, wherein a step is provided between the ends of the opening.

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