JP2013163527A - Cylindrical member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cylindrical member entirely pouring the content from a package body, and readily attached to the package body.SOLUTION: A thermoplastic resin film (4) having a non-heat sealable inner surface (5) and a heat-sealable outer surface (6), is wound into a cylindrical shape so that the inner surface (5) is located inside. Opposite both ends of the film (4) are folded inward and superposed, and the outer surfaces (6) of both superposed folded portions (2, 3) are heat-sealed to each other.

Description

  The present invention relates to a cylindrical member in a package such as a bag or a box.

  Some packages, such as bags and boxes, are provided with a cylindrical spout member for easily filling or taking out the contents. As this kind of spout member, there is one in which a pipe-shaped cylindrical member is embedded in a seal portion of a bag (for example, see Patent Document 1).

JP-A-5-132069

  Since the conventional cylindrical member is made of a relatively hard pipe in order to improve the flow of the contents, it is difficult to pour out the contents from the package body such as a bag.

  Therefore, an object of the present invention is to provide a cylindrical member that can be poured out from the package without leaving any contents, and that can be easily attached to the package.

  In order to solve the above problems, the present invention employs the following configuration.

  In addition, although the code | symbol with a parenthesis is attached | subjected in order to make an understanding of this invention easy, this invention is not limited to this.

  That is, in the invention according to claim 1, the inner surface (5) is provided with non-heat-sealability, and the outer surface (6) is provided with heat-sealability with the inner surface (5) on the inside. The opposite ends of the film (4) are folded inward and overlapped, and the outer surfaces (6) of both the folded portions (2, 3) are heat-sealed. The cylindrical member (1) made into a cylindrical body is adopted.

  According to the present invention, the cylindrical member (1) can be flattened after taking out most of the contents such as liquid from the package (10), so that the package remains without leaving all the contents. (10) It can be taken out. Therefore, for example, when it is applied to a spout of a refill container, almost all of the contents can be taken out and used. Moreover, when attaching a cylindrical member (1) to a package (10) by heat seal, since the inner surface (5) of the part attached to the package (10) of a cylindrical member (1) does not adhere, it is normal. The cylindrical member (1) can be attached to the package (10) with the apparatus. Further, the folded portions (2, 3) of the film (4) protrude to the inside of the cylindrical body, and the inner surfaces (5) of both folded portions (2, 3) and the inner surfaces (2) of both folded portions (2, 3) ( 5) Since the inner surface (5) of the cylindrical member (1) opposite to the non-heat-sealing property is not bonded, the cylindrical body is urged in the expanding direction. The filling or dispensing of the contents through (1) is facilitated.

It is a front view of the cylindrical member concerning the present invention. FIG. 2 is a cross-sectional view taken along line II-II in FIG. It is explanatory drawing of the process of manufacturing a cylindrical member. It is a partial notch front view which shows the state which attached the base part of the cylindrical member to the mounting part of a bag, and closed the tip part of the cylindrical member by the ultrasonic seal etc. after that.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the cylindrical member 1 has a cylindrical shape in which a non-heat-sealing property is imparted to the inner surface 5 and a rectangular film having a heat-sealing property is imparted to the outer surface 6. The opposite ends of the film are folded inward and overlapped, and the outer surfaces 6 of both the folded portions 2 and 3 are heat sealed to form a cylinder. The film may be square.

  As the above-mentioned film, a film made of a thermoplastic resin, which has a non-heat seal property on its inner surface 5 and a heat seal property on its outer surface 6 is used.

  Here, the non-heat-sealable thermoplastic resin in the present invention is when the outer surfaces 6 of the two folded portions 2 and 3 of the film 4 are heat-sealed or the tubular member 1 is heat-sealed to the package 10. A thermoplastic resin that sometimes does not melt and can be welded by an ultrasonic sealing method or a high-frequency sealing method, and a thermoplastic resin having a higher melting point than a heat-sealable thermoplastic resin is used.

  Examples of the heat-sealable thermoplastic resin include polyolefin resins such as low-density polyethylene and linear low-density polyethylene. Examples of non-heat-sealable thermoplastic resins include high-density polyethylene resins and polyolefin resins such as polypropylene, polyester resins such as polyethylene terephthalate, and polyamide resins. Polyester resins and polyamide resins are preferred.

  Specific film configurations include stretched polyamide resin (inner layer) / polyethylene (outer layer), stretched polyethylene terephthalate resin (inner layer) / polyethylene (outer layer), polyethylene terephthalate resin (inner layer) / stretched polyamide resin / polyethylene (outer layer), etc. The laminated film is used. The thickness of the film is desirably about 100 μm to 500 μm. When the thickness of the film is less than 100 μm, the strength as a cylindrical member is insufficient, and when it is thicker than 500 μm, it is difficult to pour out all the contents when used as a spout.

  This film can be obtained by cutting into a rectangle from a web-like film. This rectangular film 4 is wound into a cylindrical shape, and both ends are folded inward as a margin as shown in FIG. 2, and the outer surfaces 6 of the folded portions 2 and 3 are heat sealed to form a cylinder. It is assumed to be a body.

  The formation of the film 4 on the cylindrical body is performed simply and accurately by utilizing the non-heat sealing property of the inner surface 5 of the film 4. That is, as shown in FIG. 3, the film 4 is wound into a cylindrical shape, and the folding portions 2 and 3 are folded into the inside of the cylindrical body, and then the cylindrical folding portion 2 from the outer surface 6 side of the cylindrical body. , 3 is heated while being heated by a pair of heat seal boards 13, 14, the film 4 is subjected to heat fusion between the opposing outer surfaces 6 of the two folding parts 2, 3, so that FIG. Finished as a cylindrical member 1 as shown in FIG. At this time, the inner surfaces 5 of the both folding portions 2 and 3 of the film 4 and the inner surface 5 facing the inner surfaces 5 of the both folding portions 2 and 3 of the film 4 are not heat sealed.

  Next, the operation of the cylindrical member having the above configuration will be described.

  The cylindrical member 1 shown in FIG.1 and FIG.2 is attached to the predetermined location of the pouch 10 which is a package as shown in FIG.

  That is, the base portion of the tubular member 1 is inserted between the overlapping pouch films, and the pouch film is pressed while being heated by a pair of heat seal boards (not shown).

  At that time, the inner surface 5 of the cylindrical member 1 is not fused and maintains a conductive state due to the non-heat sealing property imparted to the inner surface 5 of the base. Then, only the outer surface 6 having heat sealability at the base is fused to the inner surface having heat sealability of the pouch film.

  The pouch 10 with a spout is loaded into a filling machine (not shown), and a refill detergent or the like is filled into the pouch 10 as a content. In this case, the pouch 10 may be filled with the contents from the tubular member 1. At this time, since the cylindrical member 1 tries to expand due to the presence of the folding portions 2 and 3, a filling nozzle or the like can be easily inserted into the cylindrical member 1.

  Further, the tip portion of the cylindrical member 1 is ultrasonically sealed or high-frequency sealed, and is closed as a flat sealing portion 1a as shown in FIG.

  In addition, when not using the cylindrical member 1 as a filling port, you may make it attach the cylindrical member 1 which formed the sealing part 1a in the front part to a package.

  As shown in FIG. 4, it is heat-sealed so that the folding parts 2 and 3 may come to the end of the flat sealing part 1a desirably.

  In addition, if necessary, as shown in FIG. 4, a semi-cut tearing groove 11 is engraved so as to extend over the entire circumference of the cylindrical member 1 at a location closer to the center than the location where the sealing portion 1a is formed. Is done. The groove 11 is formed by, for example, laser light irradiation. The groove 11 can be formed at the stage of the film 4 or can be formed after being wound into a cylindrical shape as shown in FIG. 1 or after sealing the tip as shown in FIG.

  Further, after the groove 11 intersects with the folding portions 2 and 3 in the tubular member 1 by heat sealing with an ultrasonic seal or a high frequency seal, a notch 12 for facilitating opening may be formed. .

  When taking out the contents from the sealed pouch 10, the tip portion that becomes the sealing portion 1 a of the tubular member 1 is cut off. After opening, the cylindrical member 1 is urged in the expanding direction by the presence of the folding portions 2 and 3 and expands into a cylindrical shape. Therefore, the contents easily flow out of the pouch 10. In addition, after most of the contents have flowed out of the pouch 10, the cylindrical member 1 can be easily crushed flatly, so that almost no entire content remains in the pouch 10 and remains outside the pouch 10. Is taken out.

  In addition, this invention is not limited to the said embodiment, A various change is possible.

DESCRIPTION OF SYMBOLS 1 ... Cylindrical member 2, 3 ... Folding part 4 ... Thermoplastic resin film 5 ... Inner surface of thermoplastic resin film 6 ... Outer surface of thermoplastic resin film

Claims (1)

  A thermoplastic resin film with non-heat-sealability on the inner surface and heat-sealability on the outer surface is wound into a cylindrical shape with the inner surface on the inside, and both opposite ends of this film are folded inward A cylindrical member that is formed into a cylindrical body by being heat-sealed on the outer surfaces of the two folded portions that are overlapped.

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