JPH09272514A - Packaging machine to package article with heat-shrinkable film - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a small sized, economical packaging machine capable of packing articles with a heat-shrinkable film by heating with steam. SOLUTION: A U-shaped, double-wall steam tunnel 11 is installed in a machine body 1 with the open side down. The steam tunnel 11 has openings 14 in an inner wall and detachable steam jet plates 15 with a number of steam jet holes 16 are attached on the openings 14 to supply steam into the hollow space of the steam tunnel 11. A belt conveyer 20 with a conveying bell 23 is arranged so that the conveying belt 23 travels through the steam tunnel 11. An article 40 to be packaged is convered with a heat-shrinkable film 41 and put on the conveying belt 23 and steam is blown over the article 40 from the steam jet holes 16 to adhere the heat-shrinkable film 41 around the article 40.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for packing various beverages and foods such as bottles and bottles, and food itself such as meat and fish, which are coated with a heat-shrinkable film. It relates to the device.

[0002]

2. Description of the Related Art For various containers filled with beverages and foods,
In order to maintain hygiene and ensure new products, transparent and semi-transparent synthetic resin films are attached and packaged by heat shrinkage at the mouth and the whole. In addition, various fresh foods such as meat and fish and shellfish, and frozen and chilled products thereof are also packaged using heat shrink films for the purpose of keeping freshness. In this packaging, generally, containers and foods are covered with a heat-shrinkable film, and hot air is blown onto the film to shrink and adhere the film.

[0003]

However, in the conventional method of heat-shrinking a film with hot air as described above, if the object to be packaged is cold or wet, it is difficult to shrink the film sufficiently. In packaging such an item, it is necessary to greatly increase the temperature of hot air and the amount to be blown, resulting in a large-scale apparatus.

Therefore, in place of the above hot air, steam having a specific heat larger than that of hot air is also blown, but this requires a large amount of cost for equipment such as a boiler and steam pipes, and the scale is large. There is a problem that it can not be used except in large processing plants.

The present invention has been made in consideration of the above-mentioned conventional circumstances, and by providing steam generators such as a boiler, a conveyor for a packaged object, and a steam spraying mechanism in a single body, the product is sprayed with steam. The present invention intends to provide a container and a food packaging device using a heat-shrinkable film, which enables reliable and easy application and packaging of the heat-shrinkable film and can be used in small and medium-sized processing sites. .

[0006]

The structure of the present invention for achieving the above object will be described with reference to the drawings corresponding to the embodiments. The apparatus of claim 1 is a box-shaped machine body 1. A steam tunnel 11 having a U-shaped cross section with a heat insulating wall 12 having a hollow portion 13 between the inner and outer double walls.
Is disposed with its open side facing downward, and at the bottom of the steam tunnel 11, a belt conveyor 20 having a conveyor belt 23 that travels through the inside of the steam tunnel 11 is mounted, and in the steam tunnel 11 described above. Has an opening in its inner wall 1
4 and 14 are provided, and a large number of steam ejection holes 1 are provided in the openings 14 and 14.
It is characterized in that the fumarolic plates 15 and 15 having 6 and 16 are detachably provided and a means 17 for feeding steam into the hollow portion of the steam tunnel 11 is provided.

The apparatus according to claim 2 is the apparatus according to claim 1, wherein the steam tunnel 11 is formed in a tubular shape having a quadrangular cross section, and the steam tunnel 11 has an opening 14 at the bottom and a detachable structure. It is characterized in that the fumarolic plate 15 is provided.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show the first of the present invention.
FIG. 3 and FIG. 4 exemplify the second embodiment.

In FIGS. 1 and 2, reference numeral 1 denotes a box-shaped machine body, in which packaging-related devices are housed in a front half portion separated by a vertical partition wall 2 (see FIG. 2), and a back half portion. Boiler-related devices are housed in, and traveling wheels 3, 3 and fixing means 4, 4 for the machine body 1 are provided at the lower end. The front half of the fuselage 1 is divided into an upper chamber 6 and a lower chamber 7 by a horizontal partition wall 5, and an opening 10 is formed between a front wall 8 and a rear wall 9 of the lower chamber 7 (see FIG. 1). , 10 are formed.

In the lower chamber 7, a steam tunnel 11 having a U-shaped cross section and elongated in the front-rear direction is formed by a hollow wall body 12 having a hollow portion 13 closed between inner and outer walls. It is arranged toward. On both sides and the ceiling of the steam tunnel 11, openings 14 and 14 of a required size are provided on the inner wall thereof, and the openings 14 and 14 have a large number of steam outlets 16 and 16. The fumarolic plates 15 and 15 are detachably attached. Also, the steam tunnel 11
A feed pipe 17 for feeding steam into the hollow portion 13 is connected to an appropriate place, for example, a ceiling portion.

At the lower part of the steam tunnel 11, there is mounted a belt conveyor 20 which passes through the openings 10, 10 from the inside of the steam tunnel 11 and projects outward by a required length from both front and rear ends of the machine body 1. There is. That is, the steam tunnel 11
Inside the lower end of the machine, a conveyor frame 21 is installed which projects a considerable amount outward from the front and rear ends of the machine body 1, and a pair of belt rollers 22, 22 are provided at the front and rear ends of the conveyor frame 21 to hang them. The rotated endless conveyor belt 23 is driven by the motor 24 in the direction of the arrow a in FIG. 1, and the upper portion corresponding to the conveyor side of the conveyor belt 23 is the steam tunnel 11
It is designed to run in the length direction in the lower part of the. In the figure, 25 is a receiving plate that prevents the conveyor belt 23 from hanging down, and 26 is a receiving roller that supports the lower belt.

A radiator 30 is installed in the upper chamber 6 so as to communicate with a through hole 18 provided in the horizontal partition wall 5, and a ceiling plate 19 of the body 1 is provided above the radiator 30. A perforated hole 32 is provided so as to face the exhaust port 31 of the radiator 30, and a ventilation fan 33 is installed on the perforated hole 32. And
One end of a cooling water supply pipe 34a and one end of a return pipe 34b are connected to the radiator 30, and the other ends of both pipes 34a and 34b are connected to a water supply tank 38 described later. Further, the radiator 30 is provided with a drain pipe 35 connected to the water supply tank 38.

As shown in FIG. 2, a boiler 36 and steam from the boiler 36 are provided in the back half of the airframe 1 as described above.
Steam tank 37 to supply to the steam tunnel 11 via 17
And a water supply tank 38 for feeding water to the boiler 36, circulatingly supplying cooling water to the radiator 30, and taking in drain from the radiator 30.

In the above-mentioned apparatus, the steam generated in the boiler 36 is retained in the steam tank 37, from which the feed pipe 17
After that, it is fed into the hollow portion 13 of the steam tunnel 11 to be filled therewith, and is jetted into the steam tunnel 11 through the ejection holes 16 and 16. On the other hand, the belt conveyor 20 is driven by the motor 24 so that the conveyor belt 23 travels through the lower portion of the steam tunnel 11 as indicated by an arrow a in FIG. In that state,
As shown in, the heat-shrinkable film is applied to the packaged object 40 such as a container.
If 41 is put on the traveling base end side of the conveyor belt 23, the article 40 to be packaged will be transported through the steam tunnel 11.

At this time, since the hollow wall 13 forming the steam tunnel 11 is filled with steam in the hollow portion 13, the inside of the steam tunnel 11 is kept in a high temperature atmosphere by the heat quantity of the steam. In addition to this, the heated steam is ejected from the ejection holes 16 and 16. The heat-shrinkable film 41 uniformly and quickly heat-shrinks by being injected with heated steam while passing through the steam tunnel 11 at such a high temperature, and is tightly and firmly adhered to the object to be packaged. . Then, it will be taken out of the plane through the steam tunnel 11 and taken out.

The steam jetted into the steam tunnel 11 rises from both ends thereof, rises, and flows through the gap between the steam tunnel 11 and the horizontal partition wall 5 into the radiator 30 through the through hole 18 by the action of the ventilation fan 33. There, the water is cooled by the cooling water sent from the supply pipe 34a, the moisture is collected in the drain pipe 35 and returned to the water supply tank 38, and the air component is discharged from the ventilation fan 33 to the outside of the machine.

In the above steam tunnel 11, the opening 14 and the fumarolic plate 15 are provided on both sides and the ceiling, but the invention is not limited to this.
Those on the ceiling can be excluded. Also plate
Since 15 is detachably provided, various ejection plates 15 having different sizes and arrangements of the ejection holes 16, 16 can be replaced to correspond to the convenience of packaging and the like.

Next, a second embodiment will be described with reference to FIGS. 3 and 4. In this embodiment, the structure of the steam tunnel 11 is different from that of the previous embodiment. That is, the steam tunnel 11 has a quadrangular cross-sectional shape, and the opening 14 is also provided in the inner wall of the bottom of the steam tunnel 11.
An ejection plate 15 having a large number of ejection holes 16, 16 is detachably provided therein.

In this case, the conveyor belt of the belt conveyor 20
The receiving plate 25 supporting 23 is disposed so as to pass through the lower portion of the steam tunnel 11 in the front-rear direction, and the belt conveyor 20 has the upper side of the conveyor belt 23 of the steam tunnel 11 along the receiving plate 25.
It is provided to run inside. In addition, the conveyor belt 23
It is preferable that a mesh belt is used so that the jetted vapor can pass therethrough, and the receiving plate 25 is also formed of a mesh plate or the like. Then, the steam is jetted from the jet holes 16 and 16 of the steam plate 15 at the bottom in addition to the both sides and the ceiling, so that the receiving plate
The heat-shrinkable film 41 that has passed through the transport belt 25 and the transport belt 25 and covers the article to be packaged 40 acts on the heat-shrinkable film 41, and the deposition can be performed more quickly and firmly. The parts having the same configurations as those of the previous embodiment are designated by the same reference numerals, and the duplicated description will be omitted.

FIG. 5 shows a state in which a container such as a bottle is used as the object to be packaged 40 and the heat-shrinkable film 41 is applied to substantially the entire circumference thereof. When 41 is covered as shown by the chain line and heated steam is blown, it contracts and is adhered to almost the entire surface of the article to be packaged 40. FIG. 6 shows an example in which the heat-shrinkable film 41 is adhered only to the upper part of the article to be packaged 40. In this case, as shown by the chain line, it is tubular above the shoulder of the article to be packaged 40. The heat-shrinkable film 41 is covered and attached. In addition to the above-mentioned examples, the application and packaging of the heat-shrinkable film performed by the apparatus of the present invention is widely applied to meat, fish, vegetables, fruits, and various foods.

[0021]

As described above, according to the present invention,
Since the boiler and its related equipment, a series of equipment related to shrink-wrapping with heat-shrinkable film, such as a device for transporting the packaged object and a device for spraying steam to the packaged object, were installed in one machine, the specific heat Adhesion and packaging of heat-shrinkable film with high steam can be performed with compact equipment and machinery without the need for large-scale piping equipment as in the past, especially economical in small and medium-sized processing plants. Can be conveniently used.

In the apparatus of the present invention, the article to be packaged is placed on the belt conveyor and passed through the steam tunnel, so that the heat-shrinkable film is attached to the article to be packaged by steam blowing under heating. Since it can be done automatically, the packaging work can be done easily and efficiently, and the heat efficiency is good, and even if the object to be packaged is low temperature or wet, the shrinkable and adherent packaging by the heat shrinkable film can be ensured. It can be carried out.

Moreover, the apparatus can be made compact as a whole, the mechanism is simple and can be manufactured at low cost, and the drain can be recovered from the used steam, so that the running cost is low and the apparatus is safe. The working environment is also good.

[Brief description of drawings]

FIG. 1 is a partially longitudinal front view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the same part.

FIG. 3 is a partially longitudinal front view showing another embodiment of the present invention.

FIG. 4 is a vertical sectional side view of the same portion.

FIG. 5 is an explanatory diagram showing an example of wrapping an object to be packaged with a heat-shrinkable film.

FIG. 6 is an explanatory diagram showing another example.

[Explanation of symbols]

 1 Aircraft 2 Vertical bulkhead 5 Horizontal bulkhead 6 Upper chamber 7 Lower chamber 8 Front wall 9 Rear wall 10 Opening part 11 Steam tunnel 12 Heat insulating wall 13 Hollow part 14 Opening part 15 Fume plate 16 Jet hole 17 Feed pipe 18 Through hole 20 Belt Conveyor 21 Frame 22 Belt roller 23 Conveyor belt 30 Radiator 33 Ventilation fan 34a Supply pipe 34b Return pipe 35 Drain pipe 36 Boiler 37 Steam tank 38 Water supply tank 40 Wrappers 41 Heat shrinkable film

Claims (2)

[Claims] 1. Inside and outside 2 inside a box-shaped body
A steam tunnel formed in a U-shaped cross section by a heat insulating wall having a hollow space between the heavy walls is arranged with its open side facing downward, and the steam tunnel runs under the steam tunnel through the steam tunnel. A belt conveyor having a conveyor belt is mounted, an opening is provided in the inner wall of the steam tunnel, and a fumarolic plate having a large number of steam ejection holes is detachably provided in the opening, and the steam tunnel is hollow. A packaging device using a heat-shrinkable film, characterized in that means for sending vapor into the inside is provided. 2. The steam tunnel is formed in a tubular shape having a quadrangular cross section, and an opening and a detachable fumarolic plate are also provided at the bottom of the steam tunnel. Packaging equipment with heat-shrinkable film.