JPS62168814A - Filling packaging method - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Application Field The present invention relates to a filling and packaging method, and more specifically, in forming and filling packaging in which a container is formed on a container film and the container is filled and sealed. This invention relates to a filling and packaging method that prevents air from remaining in a sealed container.

(B) Prior Art As a method for packaging foods such as tofu, for example, the so-called full-fill-seal method involves placing a container full of water together with the food tofu to prevent air from remaining in the sealed packaged container. is being carried out. As shown in FIG. 6, the conventional method of full filling and sealing is almost the same as normal forming, filling and packaging, and after forming a container r into a band-shaped container film F using a forming device a, First, food such as tofu (or water) is put into the container r by the first filling device R, and then water (or food) is put into the container by the second filling device C. As shown in the figure, the container film F was raised up from the container, and then a cover film f was placed on the container film F, and both films were closely sealed by a sealing device d.

However, in this conventional method, there is no escape for the air that exists between the container film F and the cover film F during the sealing process, and a small amount of air remains in the upper part of the container, as shown in FIG. was. For this reason, when the container was steam sterilized at a temperature of approximately 90 degrees Celsius after sealing to extend the shelf life of food, there was a problem that the residual air inside the container expanded due to this heating and the seal surface burst. .

(c) Problems to be solved by the present invention The problems to be solved by the present invention are to eliminate air remaining in the container after sealing in forming and filling packaging, and to prevent the sealing part during steam sterilization. The goal is to eliminate rupture.

B) Means for Solving the Problems In order to solve the above problems, the present invention provides a filling and packaging method in which a container is formed from a continuous strip-shaped container film, and after filling the container with an article, the container is sealed with a cover film. , before filling the container with items, the container film is partially punched with slits around the container, and after the cover film is placed over the container film, air that tends to remain in the container is removed. The container film is discharged from the slit portion, and the cover film is tightly sealed to the container film.

(E) Examples Examples of the filling and packaging method of the present invention will be described below with reference to the drawings.

In FIG. 1, a packaging system 1 for carrying out the filling and packaging method of the present invention is schematically shown. In the figure, 2 is a heater that heats the container film F, 3 is a molding device that molds the container r onto the container film F, and 4 is the width of the container film F partially around the container r, that is, between adjacent containers. 5 is a filling device, and 6 is a sealing device for adhesively sealing the container film F and the cover film f placed thereon. As shown in FIG. 3, on the movable table 61 of the sealing device, a cutting line 11 is formed in the cover film approximately in the center of the slit s formed in the container film by the punching device 4, and extending in the direction of extension of the slit. A cutter 7 is attached. A cutting line 1.8 is cut by a disc-shaped cutter blade 81 and extends in the longitudinal direction of the film near both side edges of the films F, f and connects to the slit S. is a separation device for forming and thereby separating from a strip of film.

The punching device 4 has a die 41 and a bunch 42,
Any structure may be used as long as both can punch out a slit s of approximately the shape shown in FIG. 2. The heater 2, molding device 3, filling device 5, and sealing device 6 may have the same structure as conventional ones.

Note that 9 is a buffer device that is provided between the punching device 4 and the filling device 5 and absorbs the difference in transfer speed caused by the difference in transfer mode between the front and rear container films F. In the above packaging system, the container film F is intermittently sent to the upstream side of the buffer device 9 and heated by the heater 2, after which the container r is formed by the molding device 3. Thereafter, a substantially shaped slit s extending in the width direction of the container film is punched out between adjacent containers r in the container film F, as shown in FIGS. 2 and 4. The container film F in which the slit S is formed is the buffer device 9
After passing through the container r, the product m is continuously fed into the container r by a filling device 5 (if the product is a solid such as tofu and a liquid such as water is placed together, two separate filling devices are used) 5), as shown in Figure 5 [''A], so that it rises up from the top of the container (if the item is a solid item such as tofu, the water added thereto rises up), After filling, the cover film f is guided by the guide roller 10 and placed over the container.At this time, the product (or water) that has risen at the top of the container due to surface tension is pushed away and the fifth As shown by the arrow in Figure [B], if there is air spilling through the slit s and/or through both edges of both films, it will be discharged at the same time.Therefore, there is no place for the air to escape. It will no longer remain in the container.

Next, the sealing device 6 seals the container film F around the container r.
and the cover film f are adhesively sealed, and the cutter 7 forms a cutting line 1 on the cover film f at the position of the slit (S) of the container film, extending in the direction of extension of the slit. Thereafter, a separation device 8 forms a cutting line 1 extending in the longitudinal direction of the film to separate the packages.

Thereafter, filling and packaging is performed in the same manner.

(f) Effects According to the present invention, since no air remains in the packaging container, the sealing surface will not burst even if heated to a temperature of about 90° C. during steam sterilization.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of a packaging system implementing the filling and packaging method of the present invention, FIG. 2 is a top view of FIG. 1 showing the state of the container and cover film, and FIG. 3 is a diagram of FIG. FIG. 4 is a partially enlarged view of FIG. 2, showing a cutting line formed in the cover film f; FIG. 4 is a partially enlarged view of FIG. 2, showing a slit formed in the container film;
The figure is a diagram showing the state when covering with a cover film, No. 6
The figure shows a conventional forming-fill-packaging system, and FIG. 7 shows a process in which air remains in the packaging container in the conventional filling-packaging method. F: Container film f: Cover film r: Container
S Nisrit patent applicant: CKD Co., Ltd. (5 others)

Claims (1)

[Claims] In a filling and packaging method in which a container is formed from a continuous band-shaped container film, the container is filled with an item, and then sealed with a cover film, the container film is coated with a material around the container before filling the container with the item. A slit is partially punched out to form a slit, and after the product is filled into the container and the liquid is completely filled, and the cover film is placed on the container film, air remaining in the container is removed from the slit portion. A filling and packaging method characterized in that the cover film is tightly sealed to the container film.