JPH0726353U - Tube container for retort having integrally formed lid - Google Patents

Abstract

(57) [Summary] [Objective] To provide a retort (laminate) tube container capable of significantly reducing the production cost. A retort (laminate) tube container having a lid integrally formed so as to easily separate into a tube neck portion and seal a passage for contents.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a retort tube container having an integrally molded lid.

[0002]

[Prior art]

 A tube container such as a laminate tube container having a barrier property using an aluminum foil or the like in the body is widely used as a container for seasonings, cosmetics, chemicals and the like.

In such a tube container, a cylindrical body portion and a shoulder portion (hereinafter referred to as a neck portion) including a mouth portion are integrally molded, and then a separately molded cap is attached to the cap feeder and the same. It is manufactured by using an attached machine and automatically screwing it into the neck part.

However, in order to automatically and properly attach the cap to the neck portion of the tube container, it takes time and skill to adjust the cap feeder and the attaching machine. If this adjustment is not done properly, the cap may become slanted, the threads of the neck may be crushed, or the tightening torque may be insufficient and the seal may be incomplete resulting in leakage of contents. Becomes Of the defects in tube container manufacturing, the defective cap mounting is actually large in quantity.

The inventor of the present invention has made repeated studies in order to reduce the production cost of the tube container, but such a situation is a major obstacle to improving the productivity of the tube container. I focused on that.

By the way, in the food industry, it is general practice to “retort sterilize” the food filled in the container. This is a kettle containing a heating medium (usually water) filled with a film bag container, which is commonly called a retort pouch, filled with the contents, and heated to 120-135 ° C under high pressure. By doing so, complete sterilization is performed, and if this treatment is completed, it can be stored at room temperature for a long time if it is unopened.

When such a retort treatment is performed on a normal laminate tube container, the cap is loosened due to the high temperature and high pressure of the retort treatment and the contents leak out, or conversely, the heating medium enters from the outside. There is a fatal problem in the container structure. Therefore, in order to deal with such a problem, a seal for closing the mouth portion is attached from the outside of the mouth portion of the laminate tube container (Fig. 4), or the inner surface from the mouth portion of the tube to the shoulder portion. It has been proposed to equip the sides with a member for closing the mouth (Fig. 5).

[0008] In these methods, one of the closure members is provided around the mouth of the tube, and the retort treatment is performed without mounting the cap. This is because if the retort is carried out with the cap attached in advance, water is likely to remain between the mouth and shoulder and the cap, causing mold to grow later and germs to propagate, which is not preferable.

[0009]

[Problems to be solved by the device]

 However, the attachment of a sealing seal from the outside (type of Fig. 4) is not sufficient to withstand the rise in internal pressure due to retort treatment. And in order to be able to withstand it completely, it is necessary to increase the seal strength, which makes it difficult to open. It is also possible to press the seal with a cap during the retort treatment, but in that case, the cap must be removed after the treatment, dried and then the cap attached again.

Further, in the type of FIG. 5, a laminated material using aluminum foil as a base material is used as the closing member, but since this member has sufficient adhesive strength to the inner surface of the neck portion, Requires special technology as disclosed in Japanese Utility Model Publication No. 1-28026. Moreover, these measures require special seal members and closing members for the retort treatment, but the production of these members must go through the forming process of blank, punching process, and mounting process. However, it will be necessary to install dedicated equipment for them, which will be a significant factor in increasing costs.

The present invention has an object to provide a tube container for a retort which can withstand the retort treatment sufficiently under such circumstances and can be manufactured at a low cost.

[0012]

[Means for Solving the Problems]

 As a result of diligent studies, the present inventor has made it possible to easily separate the lid body from the neck portion at the same time when the cylindrical body portion and the neck portion are integrally formed in the tube container manufacturing process. We have found that this can be solved by molding, and have completed the present invention.

That is, the gist of the present invention is a tube container for a retort, which has a lid integrally formed so as to be easily separated from the tube neck portion and seal the passage of contents. To do.

In the retort tube container of the present invention, after the contents are filled from the other end, the end part is sealed and the end part is sealed and the upper part of the neck part and the thin part are thinned as shown in FIG. Since it is integrally molded in, the passage of the contents in the container is sealed and the quality of the contents is maintained. This sealed state can sufficiently withstand the temperature and pressure of the retort treatment.

When the lid is used, the lid is twisted to separate it from the neck, the contents are taken out, and after use, the separated lid is fitted to the neck by screwing, locking, or the like. In addition, it is possible to reseal by mounting by screwing, and the quality of the contents can be kept good even during repeated use.

As already described in the section of the prior art, in the tube container, the lid such as the cap is usually formed by injection molding or the like separately from the tube container body. Then, a lid is screwed by an automatic machine to a tube container body obtained by integrally molding a neck portion on the tube body. For this reason, equipment such as an injection molding machine for molding the lid, a cap feeder, and a cap screwing machine are required, and considerable adjustment and time are required for these adjustments in actual work. It costs.

In the present invention, the lid body can be integrated at the same time in the conventional process of integrally forming the tube body portion and the neck portion without requiring such equipment and adjustment, and in the present invention, Since the special seal member and the closing member for the retort treatment described above are not required, the tube container for a retort according to the present invention can significantly reduce the cost. Moreover, in the sense that the quality of the contents is maintained in good condition, there is substantially no difference from the conventional retort tube container using the seal member or the closing member.

Further, since the automatic screwing process of the lid is unnecessary, there is no restriction on the shape of the lid, and for example, the outer circumference can be polygonal or a flat handle can be attached.

The tube container for a retort according to the present invention is important to have a structure in which the lid body is thin and integrated with the neck portion so as to seal the passage of the contents, and other matters are particularly limited. It is not something that will be done.

For example, for the body of the tube container, preferably high density polyethylene containing a gas barrier layer such as aluminum foil, ethylene-vinyl alcohol copolymer, polyester such as polypropylene, PET, PBT, The laminated structure is mainly composed of resins such as polyacrylonitrile, polyamide, polyvinyl chloride, and polyvinylidene chloride. However, if there is no strict requirement for gas barrier properties, a single layer tube structure of the above resin may be used. However, the laminated tube is preferred. The shoulder portion to neck portion of the tube container or the cap is usually formed of a single layer. However, if desired, a multi-layer structure can be used.

[0021]

【Example】

 Hereinafter, the tube container of the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a sectional view showing an embodiment of a tube container of the present invention. In FIG. 1, 1 is a tube body portion including a gas barrier layer such as aluminum foil, 2 is a neck portion including a shoulder portion integrated with the body portion 1, 3 is a thin bridge portion 4 at the upper portion of the neck portion. It is a lid that is integrated through. The tube container is sealed at its end after it has been filled with content from another open end. Since the tube container of the present invention has such a structure, it can sufficiently withstand the high temperature and high pressure of the retort treatment without any trouble. When the laminate tube container is used, the user can take out and use the contents by opening the passage of the contents by tearing off the thin bridge portion 4 and separating the lid by a user. Reference numerals 5 and 6 are screw portions for securely attaching the lid body separated by tearing off the thin bridge portion 4 to the neck portion, and 7 is a sealability between the neck portion and the lid body, which is provided as necessary. A spherical surface portion (R surface portion) 11 for more certainty is a passage for contents. A packing can be inserted in the R surface portion in order to secure further sealing property. The packing can be enclosed together in the packaging, since the tube container is actually packaged and provided in a suitable packaging.

FIG. 2 is a sectional explanatory view showing another embodiment of the present invention, and FIG. 3 is a view obtained by rotating this by 90 °. Also in this embodiment, as in the case of the above-mentioned embodiment, the sealing property can be ensured by providing an R surface on the joint surface or by packing. 5 and 6 are explanatory views of a conventional retort tube container.

[0024]

[Effect of device]

 As described above, the tube container for a retort according to the present invention does not use a special seal member or a closing member for retort treatment unlike the conventional product, but does not use a high temperature during the treatment. -It can withstand high pressure and the contents will not leak out. Moreover, unlike the conventional product that requires the special member mentioned above and that the lid body is separately molded and screwed to the neck of the tube container, the production process can be greatly streamlined and labor can be saved. In addition to greatly reducing the production cost, after the retort treatment, the lid is easily separated from the neck of the container at the time of use by the user, and it is integrated so as to seal the passage of the contents. The contents are sealed until the lid is torn off before use, and after use, the lid is attached to the neck and resealed, so that the contents containing volatile or fugitive components are not contained. Even if there is, the quality can be kept good.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view showing an embodiment of a laminator tube container of the present invention.

FIG. 2 is an explanatory sectional view showing another embodiment of the present invention.

FIG. 3 is a partial cross-sectional explanatory view of the container shown in FIG. 3 rotated by 90 °.

FIG. 4 is an explanatory view of a conventional laminate tube container for a retort.

FIG. 5 is an explanatory view of another example of a conventional laminate tube container for a retort.

[Explanation of symbols]

 1 Laminate tube body part 2 Neck part 3 Lid body 4 Thin-wall bridge part 5 Screw part 6 Screw part 7 Spherical part (R surface part) 10 Contact surface 11 Content passage

Claims (2)

[Scope of utility model registration request] 1. A retort tube container having a lid integrally formed so as to be easily separated from the tube neck portion and to seal a passage for contents. 2. The tube container for a retort according to claim 1, wherein the lid and the tube neck portion form a seal portion.