JPH0654673A - Vacuum gas replacement in food-packaged bag and device therefor - Google Patents

Abstract

(57) [Summary] [Purpose] The objective is to efficiently replace and seal gas in a food packaging bag while vacuum suctioning it in the vacuum chamber. [Structure] Hold the bag in a hanging shape and rotate it intermittently,
Adjacent to the rotary table type filling device for filling and packing the filling object in the bag in the process, it is provided with a plurality of vacuum chambers for receiving the bag filled with the filling object and rotating intermittently in the same suspended state. It is characterized in that a rotary table is provided, a vacuum suction pipe and a gas feed pipe are provided in each vacuum chamber, and gas is blown under vacuum suction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum gas replacement method in a food packaging bag for preventing various alterations of the food and increasing the added value of the food during the automatic pouch packaging of the processed food.

[0002]

2. Description of the Related Art FIG. 5A is shown in order to prevent deterioration of oils and fats and vitamins contained in foods due to oxidation, prevention of insect damage, prevention of aging of color change, and growth of mold and bacteria. Gas flush performed by individually pushing the gas blowing nozzle 3'and the air discharging nozzle 3 "into the bag mouth while the upper part of the bag 4'is sandwiched by sponge or rubber 2'in the atmosphere as described above. Method (a), a nozzle method (b) in which a single nozzle 3 "is pushed in as shown in FIG. 7B and gas is blown after the air is first sucked out by the nozzle, or a vacuum chamber 6 as shown in FIG. There is known a badge type (c) in which a bag 4'is laterally placed inside and a gas is introduced from a gas inlet pipe 3'while sucking internal air with a vacuum pump 5 '.

[0003]

In the above, the gas flush system (a) is capable of mechanically high performance, but it consumes a large amount of gas and is not suitable for powder fine particles, and is not stable. On the other hand, although the nozzle method (b) is mechanically relatively high-capacity and consumes a small amount of gas, it is not suitable for powder fine particles, while the badge method (c) is the most stable. A certain high substitution rate can be obtained, and although a wide range of correspondence is possible from powder fine particles to wet ones, liquid ones, the gas consumption amount must be the minimum volume of the chamber, and mechanically Since 5 to 6 pouches are arranged manually by hand, the efficiency is lower than other methods.

Further, in particular, a gas flash system (see FIG. 1)
In A) and the nozzle system (FIG. 1B), since the nozzle is inserted into the bag, there is a problem that the flow of the filling material inside is obstructed and the residual air increases, resulting in a poor replacement rate. .

[0005]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and the first feature of the present invention is to hold the bag in a hanging shape and rotate it intermittently. A rotary table provided with a plurality of vacuum chambers adjacent to a rotary table type filling device for filling and packaging the filling object in the bag and receiving the bag filled with the filling object and rotating intermittently in the same suspended state. And a vacuum suction pipe and a gas inlet pipe are provided in each vacuum chamber to perform gas blowing under vacuum suction, which is a vacuum gas replacement method in a food packaging bag. The apparatus for carrying out the invention is characterized in that the blow-in port of the gas inlet pipe is provided at a fixed position which is located a predetermined distance above the center of the bag in each vacuum chamber.

[0006]

[Function] Since the gas is blown into the bag in the vacuum chamber on the rotary table under vacuum suction through the gas inlet pipe located a predetermined distance above the bag in the center, the filler in the bag is filled. Gas flow is improved without obstructing flow, and effective gas replacement is possible.

[0007]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an explanatory diagram of a gas blowing state of the present invention, FIG. 2 is an overall configuration explanatory diagram of an apparatus for carrying out the method of the present invention, and FIG.
FIG. 4 is a plan view of the vacuum gas table device, and FIG. 4 is a cutaway perspective view of the vacuum chamber. A is a rotary table-type filling device, and a large number of a pair of bag-holding claws 2a and 2b (seven in the illustrated example) around the table 1 at equidistant positions.
Is provided, and the bag 4 from the separate magazine 3 is attached so as to be fed through a delivery means (not shown).

Here, the table 1 is adapted to be intermittently rotated, and the attached bag 4 is adapted to perform various operations in each section process of the intermittent rotation of the table 1, that is, In the illustrated example, the section a holds the bag 4, the section b prints on the held bag 4, the section c opens the opening of the bag 4, the section d puts an object to be filled, and the section e puts. Has been designed to temporarily seal both ends of the bag mouth.

Reference numeral f is a section for feeding the bag to a vacuum gas table device described below, and the vacuum gas table described below is arranged such that the positions are adjacent to each other and intermittently rotated at the same time. It corresponds to one position where the device B is intermittently stopped, and the delivery device for the bag 4 is omitted.

Reference numeral B denotes a vacuum gas table device, which has a large number (16 in the illustrated example) at equal intervals around the table 5.
The vacuum chamber 6 is attached and is intermittently rotated. The vacuum chamber 6 has a structure as shown in FIG. 4, that is, 6a is a chamber body, 6b is a front lid on the front side, and the front lid 6b is provided on the lower surface of the table during the intermittent rotation process of the table 5. The cam is opened and closed automatically by the action of a cam (not shown). In this example, the bag 4 filled with the item to be packaged in A is sandwiched between the two parts before and after it. The sections are open and the other sections are closed.

Each vacuum chamber 6 is provided therein with a pair of left and right bag-holding claws 7a, 7b for holding the left and right sides of the bag, suction cups 8a, 8b for sucking the front and back, and a vacuum suction tube. 9, heater 10 for sealing, heater driving cylinder 11 and heater holding driving cylinder 12
Etc. are provided.

Reference numeral 13 is a gas injection nozzle provided on the upper surface of the chamber body 6a, and is installed at a fixed position which is separated from the substantial center of the bag 4 in the chamber by a predetermined distance.

In the above-mentioned structure, in the present invention, the bag 4 filled with the filling from the filling device A is opened via the delivery means while the front cover 6b of the vacuum chamber is opened, and the bag gripping claw in the vacuum chamber is provided. It is gripped by 7a and 7b. Then, when the front lid 6b is closed, the vacuum means is operated to make the inside vacuum, and gas is blown into the bag 4 from the gas blowing nozzle 13.

At this time, the blowing port of the gas blowing nozzle 13 is provided above the bag 4 at an appropriate distance, and the filling material in the bag 4 is allowed to flow freely so that effective gas replacement and Gas filling is performed.

When the gas blowing is completed, the heater driving cylinder 11 is thereafter operated to heat and press the bag mouth for sealing. Then, the vacuum in the chamber is released, and while the bag mouth is cooled, the front lid 6b is opened and the gripping claws are released at the turning end of the table to release the product from the conveyor 1.
5 is to be discharged to the top.

In the present embodiment, the above-mentioned steps are shown such that the rotary table is intermittently rotated in 12 sections.
The number of sections can be changed and set as appropriate.
The type of gas used for blowing is the type of filling object,
Depending on the intended use, nitrogen gas, carbon dioxide gas, argon gas,
Oxygen gas or the like is appropriately selected.

[0017]

According to the present invention, the gas is blown by the above-described method and through the gas blowing nozzle provided at a fixed position at a predetermined distance above the center of the bag in the vacuum chamber. Therefore, the filling material in the bag can freely flow, the remaining air can be efficiently removed, and effective gas replacement and gas filling can be performed.

[Brief description of drawings]

FIG. 1 is an explanatory view of a gas blowing state of the present invention.

FIG. 2 is an explanatory diagram of the overall configuration of an apparatus for carrying out the method of the present invention.

FIG. 3 is a plan view of a vacuum gas table device.

FIG. 4 is a cutaway perspective view of a vacuum chamber.

5A, 5B and 5C are explanatory views of a conventional gas blowing method.

[Explanation of symbols]

 1 table 2a, 2b bag-holding claw 4 bag 6 vacuum chamber 7a, 7b bag-holding claw 13 gas blowing nozzle A rotary table filling device B vacuum gas table device

Claims (2)

[Claims] 1. The filling of the filling object is adjacent to a rotary table type filling device for holding the bag in a hanging shape and intermittently rotating it, and filling and filling the filling object in the bag in the process. A rotary table equipped with a plurality of vacuum chambers that receive the stored bags and rotate intermittently in the same suspended state is provided, and a vacuum suction pipe and a gas inlet pipe are provided in each vacuum chamber to blow gas under vacuum suction. A vacuum gas replacement method for food packaging bags, characterized in that 2. The method according to claim 1, wherein the blow-in port of the gas inlet pipe is provided at a fixed position which is separated from the bag in each vacuum chamber by a predetermined distance above the center of the bag. Vacuum gas replacement device for food packaging bags.