JPS6154666B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for filling a paperboard-based container with high-temperature liquid contents. This relates to a high-temperature liquid filling method in which youth, alcoholic beverages, etc. are heated to about 90°C, filled into a polygonal column-shaped container with eyes formed, and then sealed.

[Prior art and its problems]

When filling containers with liquids such as youth and alcohol,
In order to fill the container at high temperature,
As shown in Publication No. 53-86258, a structure (concave portions, convex portions, wavy ribs, etc.) that can be deformed into concave and convex shapes inward and outward is formed on the lid material, and after filling, the lid material is inserted into the container opening. Glue and seal. When the contents are cooled, the negative pressure generated by the cooling of the air inside the container is absorbed by the deformation of the lid material, thereby preventing deformation (denting) of the container body. However, in this case, if the space between the container body and the lid is large, the deformation of the lid cannot be sufficiently compensated for, and the container body may also be deformed. In addition, since the lid of the above structure has a deformable part, not only is the amount of deformation small, but it takes time and effort to create the deformed part, and furthermore, it is necessary to use a material with high strength for the container body. Prices were becoming high.

[Means for solving problems]

The applicant has solved the above-mentioned problems by providing a desired shape and number of folds in the body of the container body, and actively utilizes the negative pressure inside the container when the contents are cooled through the folds. Utility Model Application No. 56-90519 proposes a container whose body has a regular cross-sectional shape. In order to fill this type of container with high-temperature liquid, a temporary folding mandrel with recesses corresponding to the number of folds in the container is inserted into the container, and the container is pressed from the outside with a temporary folding roll to fit into the recesses of the mandrel. The problem was solved by removing the mandrel, filling it with liquid, and then gluing the lid on.

[Effect]

Before filling the container with liquid, a temporary folding mandrel with recesses corresponding to the number of folds made in the container is used to make temporary folds and creases easily, allowing the liquid to cool down after filling with high-temperature liquid and sealing. However, the body deforms into a regular shape along the folds.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

First, the container C used for filling the high-temperature liquid is
As shown in the figure, it consists of a cylindrical body part 1 and a bottom part 2 with one open end closed, and the body part 1 has a folded joint part 5 extending in its axial direction, and
The body 1 excluding the joint 5 is provided with several linear folds 3 and arc-shaped folds 4 that connect the ends of the folds 3, approximately parallel to the joint 5. .

Next, in order to manufacture the container shown in FIG. 1 and fill it with liquid, as shown in FIG. A temporary folding mandrel 8 provided with the same number of recesses 7 is inserted, and then temporary folding rolls 6, 6' move forward and backward with respect to a location 9 of the body 1 surrounded by the folds 3 and 4. are pressed against adjacent portions 9 and 9' as a pair, and are deformed to match the shape of the recess 7. This operation is repeated according to the number of folds 3, and when this operation is completed for all the locations 9, 9', etc., the temporary folding roll 6 is returned to its original state.
The temporary folding mandrel 8 is removed from the body 1 and transferred to the bottom bonding, filling, and lid bonding steps.

Although the shape of the recessed portion 7 corresponds to the shape of the portion 9 of the body portion 1 surrounded by the folds 3 and 4, its depth and location may be changed as appropriate. The temporary folding roll 6 can also be changed as appropriate depending on the recessed portion 7. In addition, when filling in the next process, we take into account problems such as leakage of contents from the top opening.
It is preferable that point 9 is not pressed.

〔effect〕

Since the present invention uses the method described above, the body of the container is shaped in advance into a regular shape such as a rectangular tube shape before filling with the contents, so that after filling with high-temperature liquid and adhering the lid, the liquid is When cooled, the body is accurately deformed through the folds, and other parts such as the lid are not deformed, making it possible to obtain a container with excellent appearance and high commercial value.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention.
The figure is a perspective view of a container used in the present invention, and FIG.
FIG. 2 is an explanatory diagram showing the main steps of the present invention. 1...Torso, 2...Bottom, 3, 4...Fold, 5
...joint part, 6...temporary folding roll, 7...recessed part,
8... Temporary folding mandrel, 9... locations.

Claims (1)

[Claims] 1. A container having a cylindrical body with several linear folds and arc-shaped folds connecting the ends of the folds approximately parallel to the joint, is placed inside the container before filling with liquid. Insert a temporary folding mandrel with recesses corresponding to the number of folds, press it from the outside with a temporary folding roll, deform it to fit the recesses of the mandrel, remove the mandrel, fill it with liquid, and then fold the lid material. High temperature liquid filling method for containers to be glued.