JPH11124112A - Sterilizing and filling method for container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fill products in a clean container for manufacturing the hygienic products in cases where a container molding process and a content filling process are separated by preventing cleanliness from being lost when molded and sterilized containers are temporarily gathered. SOLUTION: After a bottom liner film 11 with four peripheral parts having tightness for covering pallet side faces is mounted on a pallet 2, a plurality of containers are stacked, a top plate 5 is mounted on an upper face side of the obtained stack 1, an overlying film 12 larger than the top plate 5 and having tightness is put cover the top plate 5, and a side face film 8 is wound around the stack 1 in a tensile state. The side face film 8 is overlaid on the bottom liner film 11 and also overlaid on the overlying film 12 to have the bottom liner film 11 and the overlying film 12 tightly attached to the side face film 8, thereby bringing the stack 1 into an airtight state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for sterilizing and filling a container containing juice, alcohol, and the like.

[0002]

In recent years, PET bottles and can-shaped paper containers have been used as containers for packaging soft drinks such as juices and drinks such as alcohol. ing. In the production of various products in which the contents are filled in such containers, aseptic filling and packaging in which the molded containers are sterilized in advance is performed for the purpose of, for example, extending the shelf life of the contents. . On the other hand, in the production of goods by this aseptic filling and packaging, a method of continuously performing the molding step and the filling step of the container, and a method of separately performing the molding step and the filling step as necessary. It has been selected, in the latter case, the molding line of the container and the filling line of the contents are cut off without continuous, sterilizing the container in the molding process, and brought to the filling process for each required amount Filling is performed.

When the molding step and the filling step of the container are separated as described above, it is necessary to bring the container into the filling step while maintaining the clean state of the container which is sterilized and temporarily stored in the molding step. For example, as disclosed in Japanese Patent Application Laid-Open No. 3-275426, a temporary packaging material is placed on a stack in which a plurality of sterilized containers are stacked to protect the containers. In addition, in order to facilitate transport of the stack to the filling step, a stack is configured by stacking a plurality of containers on a pallet. 3 and 4 show an example in which the conveyance is facilitated. The stack 1 is formed by stacking a plurality of containers 3 on an upper surface of a pallet 2 in a plurality of stages with an interleaf 4 interposed therebetween, and a top plate 5 is placed on the uppermost interleaf 4. The stack 1 and the pallet 2 are bound together by a synthetic resin band 7 passing through the hole 6 of the pallet 2, and a side film such as a stretch film or a shrink film is wrapped around the stack 1. 8 is placed in tension and wound around to cover. In this manner, the tensioned side film is wound around the stack formed by stacking a plurality of containers, so that the containers can be handled as a single unit without dispersion.

[0004] In order to cope with the sterilization, drying and repeated use of the above-mentioned interleaf paper, heat-resistant and durable materials are used. Specifically, polypropylene resin, ABS and the like are used. Sheets made of resin are used. Also, the thickness of the interleaving paper is
When the interleaving paper of less than 2 mm, especially 1.5 mm or less is repeatedly used, the corner part is deformed, and if it exceeds 5 mm, it has durability, but lacks flexibility and weight. It becomes bigger and difficult to handle.

By the way, as shown in the figure, in the method of covering the side surface of the stack by winding the side film around the side surface of the stack under tension, the adhesiveness between the pallet and the top plate and the side film is considered. And there is no gap 9 between the pallet 2 and the side film 8 or between the top plate 5 and the side film 8.
In this case, there is a problem that sufficient dust-proofing and insect-proofing properties cannot be ensured. In view of the above circumstances, it is an object of the present invention to prevent the cleanliness of a molded and sterilized container from being impaired when the container is temporarily collected and stored or transferred. It is an object of the present invention to manufacture a sanitary product by filling a clean container with contents when the process and the contents filling step are separated.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in consideration of the above problems, and a plurality of molded and sterilized containers are stacked on a pallet and integrally packaged. In unpacking and filling the contents into the container, the packaging form is such that a laying film having a size larger than the upper surface of the pallet and four peripheral portions sized to cover the side surfaces of the pallet is placed on the pallet. A top plate is placed on the upper surface side of the stack formed by stacking the plurality of containers placed, and an overlaid film that is larger than the top plate and the four peripheral portions reach the side surfaces of the stack is placed on the top plate. Putting, the side film is wound around the stack in a tension state, the lower winding portion of the side film is overlapped with the bottom film, and the upper winding portion is stacked on the top film, and the periphery of the stack is covered. The bottom bedding film and the overlying film have an adhesive property to the side film, and adhere the bottom bedding film and the side film over the periphery of the lower winding portion, and over the periphery of the upper winding portion. The object of the present invention is to solve the above-mentioned problem by providing a method for sterilizing and filling a container, wherein an overlaid film and a side film are brought into close contact with each other to cover the stack in an airtight state.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the embodiments shown in FIGS. 3 and 4 are denoted by the same reference numerals, and description thereof is omitted. That is, in the present invention, the entire surface of a stacked body obtained by stacking a plurality of containers sterilized in the container forming step is packed in an airtight state, and the packing form is unwrapped after being transferred to the filling step. FIGS. 1 and 2 show examples of packaging forms in which the stack is covered in an airtight state. The packaging form 10 covering the stack 1 uses the bottom film 11, the top film 12, and the side film 8, and first, the bottom film 11,
The bottom film 11 is placed on the pallet 2, and the side surface 2 b of the pallet 2 is covered with four peripheral portions 11 a of the bottom film 11. Then, the top plate 5 is placed on the upper surface side of the stack 1 in which a plurality of containers placed on the bottom film 11 are stacked, and the holes 6 in the pallet 2
A plurality of synthetic resin bands 7 hanging on the top plate 5
, The stack 1 and the pallet 2 are bound. Thereafter, the overlying film 12 is covered from above, and the overlying film 12 is larger than the top plate 5. The four peripheral portions 12 a of the overlying film 12 placed on the top plate 5 Reached to the side.

Further, in the packaging form 10, the side film 8 wound around the stack 1 is wound on the side surface 2b of the pallet 2 and wound on the top surface of the stack 1 while being wound. It covers the periphery of the stack 1. As shown in the figure, in the lower winding portion 8a formed by the side film 8, the side film 8 is wound on the four peripheral portions 11a of the underlay film 11 covering the side surface 2b of the pallet 2 and In the winding part 8b,
The side film 8 is wound over the four peripheral portions 12a of the overlay film 12 hanging on the side surface of the stack 1 and, of course, the side film 8 is wound on the body winding portion 8c covering the side surface of the stack 1 They are wrapped around each other. The side film 8 for obtaining the packaging form 10 has a small width dimension with respect to the height of the stack 1, and the peripheral film of the stack 1 is rolled up while being gradually moved up and down. 8 may be larger than the distance extending from the side surface of the pallet 2 to the top surface side of the top surface 5 of the stack 1, and the periphery of the stack 1 may be wound without moving the side film 8 up and down. .

The underlaying film 11 and the overlying film 12 are both made of a sheet exhibiting adhesion to the side film 8, and are provided so as to be in close contact with the side film 8 at the overlapping portion with the side film 8. ing. That is, over the periphery of the lower winding portion 8a of the side film 8, the four peripheral portions 11a of the bottom laying film 11 covering the side surface 2b of the pallet 2 and the side film 8 are brought into close contact with each other. Around the upper winding portion 8b, the four peripheral portions 12a and the side film 8 are brought into close contact with each other from the portion of the overlay film 12 facing the periphery of the top plate. In this way, the bottom film 11 is put on the pallet 2, the top film 12 is put from above the top plate 5, and the side film 8 is wound around the stack 1 so as to be in tension and cover the periphery. The bottom film 11 is brought into close contact with the side film 8 by the lower winding portion 8a of the side film 8, and the upper film 12 is wound by the upper winding portion 8b of the side film 8.
Therefore, the stack 1 is entirely wrapped with the bottom film 11, the top film 12, and the side film 8 to be air-tightly covered, and the overlap between the bottom film 11 and the side film 8 is made. Since there is no gap in each of the portions and the overlapping portion between the overlay film 12 and the side film 8, intrusion of pests and dust can be surely prevented. Of course, even when it is necessary to wind the side film 8 while overlapping it with the body winding portion 8c of the side film 8, there is no gap in the overlapping portion of the film because the side film 8 is wound in tension.

[0010]

As described above, in the method for filling and sterilizing containers according to the present invention, a plurality of molded and sterilized containers are stacked on a pallet and integrally packaged, and the packaging form is released when necessary. When filling the container with the contents, the packaging form is such that a laying film having a size larger than the upper surface of the pallet and four peripheral portions sized to cover the side surfaces of the pallet is placed on the pallet, and placed on the film. Put a top plate on the upper surface side of the stacked body obtained by stacking the plurality of containers,
On top of the top plate, an overlay film that is larger than the top plate and whose four peripheral portions reach the side surfaces of the stack is placed, and the side film is wound around the stack in a tensioned state, and is wound under the side film. The winding portion is overlapped on the bottom film, and the top winding portion is stacked on the top film to cover the periphery of the stack, and the bottom film and the top film have adhesion to the side film, That the underlay film and the side film are brought into close contact with each other around the lower winding portion, and the overlying film and the side film are brought into close contact with each other around the upper winding portion to cover the stacked body in an airtight state. It is a feature. in this way,
The entire surface of the stack of sterilized containers is covered with a bottom film, a top film, and a side film, and further, the bottom film and the top film are closely attached to the side film at the film overlapping portion with respect to the side film and stacked. Since the weight is covered in an airtight state, dust and insects do not enter, and the cleanliness of each container can be maintained even when the container is temporarily stored or transported during the transition from the molding process to the filling process. And since the stack is kept clean, it is possible to reduce the degree of sterilization of the container on the filling step side, and dust and insects are carried into the filling work space side through the stack. The effect of the present invention is excellent in practicality, for example, the possibility of the filling work space being extremely reduced and the cleanliness of the filling work space being easily maintained.

[Brief description of the drawings]

FIG. 1 shows an example of an aseptic filling method of a container according to the present invention.

FIG. 2 is an explanatory diagram showing an example in a cross-sectional state.

FIG. 3 is an explanatory diagram showing a conventional example.

FIG. 4 is an explanatory view showing a conventional example in a cross-sectional state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Stack 2 ... Pallet 2a ... Top surface 2b ... Side surface 5 ... Top plate 8 ... Side film 8a ... Bottom winding part 8b ... Top winding part 10 ... Packaging form 11 ... Bottom film 11a ... Four peripheral parts 12 ... Overlay film 12a … Four surrounding parts

Claims (1)

[Claims] When a plurality of molded and sterilized containers are stacked on a pallet and integrally packed, and when necessary, the package is unpacked and filled with the contents, the package is formed by the pallet. On the upper surface side of the stack formed by stacking the plurality of containers placed on the bottom laying film, the bottom laying film having a size larger than the pallet upper surface and the four peripheral portions covering the side surfaces of the pallet is placed. Put a top plate, put an overlay film on the top plate that is larger than the top plate and the four peripheral parts reach the sides of the stack, and roll the side film around the stack in a tensioned state, The lower winding portion of the side film is overlapped on the bottom film, and the upper winding portion is stacked on the upper film to cover the periphery of the stack, and the bottom film and the upper film are the side film. It has adhesiveness to the bottom, the bottom film and the side film are brought into close contact with each other around the lower winding portion, and the top film and the side film are brought into close contact with each other around the upper winding portion to form a stacked body. A method for sterilizing and filling a container, wherein the container is covered in an airtight state.