KR20130024240A - Tray for foodstuff sructured with excellent strength - Google Patents

Abstract

PURPOSE: A food tray is provided to have excellent intensity despite using a thinner film than an existing film. CONSTITUTION: A food tray(100) includes two facing long sides, two facing short sides and a bottom surface(3), a long rib(10a) and a short rib(10b) are alternately formed to a vertical direction, the long rib is formed to penetrate a bent part(5), the short rib is formed exclusively on the long side just before the bent part, a long rib(20a) and a short rib(20b) are alternately formed to a vertical direction on the short side, the long rib is formed to penetrate the bent part, the short rib is formed exclusively on the short side just before the bent part, multiple penetration ribs(30a) are formed at regular intervals in order to be in parallel with the short side on the bottom surface, a connection ribs(30c) connecting adjacent penetration ribs are formed at regular intervals, and the penetration rib of the bottom surface is not placed in line with the long rib of the long side but crossed in a zigzag shape. The long rib and the short rib of the long side are formed one by one or two by two, or the long rib is formed one by one and the short rib is formed two by two. At the corner part in which the long side and the short side meet, a first connection rib(40a) connecting adjacent first long ribs to be bent at a lower surface is formed and a second connection rib(40b) connecting adjacent second long ribs to be bent at the lower surface is formed. In case the food tray is a laver tray, the food tray is manufactured by a PET(Polyethylene Terephthalate) film having 0.30mm thickness.

Description

Tray for Foodstuff Sructured with Excellent Strength}

The present invention is made of a synthetic resin film, the tray (tray) for packaging containing seaweed, such as seaweed, or a food tray for packaging fruits, such as strawberries, cherry tomatoes, peaches, blueberries, kiwi, sesame, etc. will be. More specifically, the present invention relates to a food tray made of a structure having sufficient strength as a food tray while using a thin film as compared to a conventional tray.

Food trays made from synthetic resin films are very widely used today. The most representative example is a laver tray for packing seaweed for cooking, as well as various seaweeds, such as strawberries, cherry tomatoes, peaches, blueberries, kiwis, tuna, etc., as well as Hodo, chestnuts, pine nuts, jujubes, almonds, etc. Various trays for packing nuts are widely used. In the present invention, all the trays for packing various kinds of fruits or foods are referred to as food trays.

Such food trays are usually made of polypropylene (PP) or polystyrene (PS) films, including polyester (PET) films. First, a synthetic resin film is produced, and then the synthetic resin film is produced by a vacuum process using a mold. Briefly, various food trays are manufactured by placing a film in a mold, heating to an appropriate temperature, applying pressure with a gas at the outside of the mold, and suctioning in a vacuum at the inside of the mold. The method for producing a food tray by such a vacuum process can be easily carried out by those skilled in the art.

Food trays are usually divided into quadrilateral forms of cuboids and circular forms of bowls or bowls.

The present invention relates to a food tray of a quadrangular form. The key to the technology of the food tray is how to make the tray using a thin film. This is because the thicker the film is used, the more the resin raw material is used, and as a result, the manufacturing cost is increased. However, it is not possible to use only infinite thin film. Because the prepared food trays must maintain a constant shape even when the contents are contained and must be sealed at the upper part in a manner such as sealing to have a certain strength to smooth the process.

In other words, when the sealing work on the tray top, if the tray is weak and easily crushed, the sealing work cannot be performed smoothly. Therefore, maintaining sufficient strength while using a thin film can be said to be an important technique for manufacturing a food tray.

For example, it is a limitation of the technology to use a laver tray manufactured by 0.35 mm thick PET film. When the thickness is 0.35 mm or less, it is because the strength required for sealing work cannot be produced. This is just one example, and the same is true for trays for other purposes.

The present inventors have overcome the limitations of the above technique and have developed a tray for foods of the present invention having a sufficient strength necessary for the process while using a film thinner than the thickness of the conventional film.

It is an object of the present invention to provide a food tray having a new structure having a sufficient strength for processing while using a film thinner than the thickness of a conventional film.

In addition, another object of the present invention is to provide a food tray made of a new structure that can reduce the manufacturing cost by using a film thinner than the thickness of the conventional film.

The above and other objects of the present invention can be achieved by the present invention described in detail below.

The food tray according to the present invention is a food tray 100 comprising two opposing long side surfaces 1, two opposing short side surfaces 2, and a bottom surface 3, wherein the long side surface 1 is provided. The long rib 10a and the short rib 10b are alternately formed in the vertical direction, and the long rib 10a is formed to penetrate the bent portion 5, and the short rib 10b is the bent portion 5. It is formed only on the long side (1) until just before, the long side (20a) and the short rib (20b) is alternately formed in the vertical direction on the end side (2), the long rib (20a) is the bent portion It is formed so as to penetrate (5), the short rib (20b) is formed only on the short side (2) until just before the bent portion 5, the bottom surface (3) through the ribs (30a) at regular intervals A plurality of connecting ribs 30c are formed to be parallel to the end side surface 2 and connect the adjacent through ribs 30a to each other. It is formed at regular intervals and in that characterized in that configuration.

The through ribs 30a of the bottom surface 3 are preferably not in line with the elongated ribs 10a of the long side 1, but staggeredly staggered.

The long ribs 10a and the short ribs 10b of the long side surface 1 may be alternately formed one by one or two alternately. Similarly, the long ribs 20a and the short ribs 20b of the short side 2 may also be formed alternately one by one or two alternately.

The long ribs 10a and 10b and the short ribs 20a and 20b, which are ribs on the side surfaces, are formed to protrude out of the container, and the through ribs 30a and 30b and the connecting rib 30c of the bottom surface 3 are formed. ) Is preferably projected into the container.

First connecting ribs which bend the first long ribs 10a and the first long ribs 20a adjacent to each other at the bottom of each other at corner portions where the long side surface 1 and the short side surface 2 meet. 40a is formed, and it is preferable that a second connecting rib 40b is formed to bend the adjacent second long rib 10a and the second long rib 20a to each other at a bottom surface thereof.

The central portion 50 of the bottom surface 3 may be arbitrarily deformed so that the through ribs may be deformed from 30a to form like 30b, but does not significantly affect the strength of the food tray.

Under cut (70) is formed of a plurality of directly under the sealing portion 4, which is to facilitate the sealing fixing by maintaining the gap when stacking the food tray 100, which is conventional Most are also formed in the tray.

Food tray 100 according to the present invention having the structure as described above has a sufficient strength can be produced with a PET film (Polythylene Terephthalate Film) having a thickness of 0.30 mm in the case of a laver tray. This means that in the case of the laver tray, it is possible to save 16.7% of raw materials, considering that the conventional technical limit is 0.35 mm.

Hereinafter, with reference to the accompanying drawings, the specific content of the present invention will be described in detail

The present invention provides a food tray having a new structure that has a sufficient strength for the process while using a film thinner than the thickness of the conventional film, and has a new structure that can reduce the manufacturing cost by using a film thinner than the thickness of the conventional film. Has the effect.

1 is a schematic diagram of a laver tray which is an embodiment of a food tray according to the present invention.
FIG. 2 is a schematic perspective view illustrating the bottom of the laver tray of FIG. 1.
3 is a plan view of the laver tray of FIG.
4 is a schematic cross-sectional diagram cut along the line AA ′ of FIG. 1.
5 is a schematic perspective view for showing a rib structure of a conventional laver tray.

The present invention relates to a food tray made of a synthetic resin film, and to a food tray made of a structure having sufficient strength as a food tray while using a thin film as compared to a conventional tray.

The food tray of the present invention includes a tray for packing seaweeds such as seaweed, food trays for packaging fruits, such as strawberries, cherry tomatoes, peaches, blueberries, kiwis, sesame, etc. The present invention relates to various food trays that can be used as containers for packing nuts such as dates and almonds.

In the present invention will be described by illustrating a laver tray that can be said to be the most representative embodiment. The conventional laver tray has to be made of a PET film (Polyethylene Terephthalate Film) having a thickness of 0.30 mm to produce a tray having the strength required for the process. However, in the case of the laver tray according to the present invention, a tray having the strength required in the process may be manufactured even if a PET film having a thickness of 0.30 mm is manufactured. This means that in the present invention, considering that the conventional technical limit is 0.35 mm, the present invention can save 16.7% of the synthetic resin raw material.

5 is a schematic perspective view for showing a rib structure of a conventional laver tray.

As shown in FIG. 5, various food trays including conventional laver trays have ribs 10 formed at regular intervals on their long sides to maintain strength, and ribs 20 on their side surfaces. It is formed at regular intervals, a structure 30 having a uniform shape is also formed on the bottom surface. This rib structure is formed because of the aesthetic aspect of the tray, but mainly because it is necessary to maintain the strength required for the process, it is formed as a kind of skeleton. Here, the strength required in the process means that the tray should be sealed in the sealing portion 4 of the upper portion to package the contents, and in the process, the strength can be maintained without changing the container in its shape. Therefore, it is an important manufacturing technique of the tray to have the necessary strength using a thin film as possible. In the conventional laver tray structure shown in FIG. 5, at least 0.35 mm thick PET film was used to maintain the required strength.

However, the present invention provides a new tray that can obtain the strength required for the process even with a PET film having a thickness of 0.30 mm by improving the structure of the ribs serving as the tray skeleton.

1 is a schematic perspective view of a laver tray of one embodiment of a food tray according to the present invention, Figure 2 is a schematic perspective view for showing the bottom of the laver tray of Figure 1, Figure 3 is a view of the laver tray of Figure 1 Top view.

The food tray according to the present invention is a food tray 100 comprising two opposing long side surfaces 1, two opposing short side surfaces 2, and a bottom surface 3, wherein the long side surface 1 is provided. The long rib 10a and the short rib 10b are alternately formed in the vertical direction, and the long rib 10a is formed to penetrate the bent portion 5, and the short rib 10b is the bent portion 5. It is formed only on the long side (1) until just before, the long side (20a) and the short rib (20b) is alternately formed in the vertical direction on the end side (2), the long rib (20a) is the bent portion It is formed so as to penetrate (5), the short rib (20b) is formed only on the short side (2) until just before the bent portion 5, the bottom surface (3) through the ribs (30a) at regular intervals A plurality of connecting ribs 30c are formed to be parallel to the end side surface 2 and connect the adjacent through ribs 30a to each other. It is formed at regular intervals and in that characterized in that configuration.

The through ribs 30a of the bottom surface 3 are preferably not in line with the elongated ribs 10a of the long side 1, but staggeredly staggered. The through ribs 30a of the bottom surface 3 and the long ribs 10a of the long side 1 are not located in a straight line, but staggeredly positioned so that the tray can be increased in strength.

The long ribs 10a and the short ribs 10b of the long side 1 may be alternately formed one by one or two alternately. Similarly, the long ribs 20a and the short ribs 20b of the short side surfaces 2 may also be formed alternately one by one or two alternately. In addition, the long ribs 10a may be alternately formed one by one and the short ribs 10b two by two, the long ribs 10a may be alternately formed by two, and the short ribs 10b may be alternately formed one by one. The same applies to the case of the side surface 2. Such modifications can be easily made by those skilled in the art. In any case, however, the through ribs 30a of the bottom surface 3 are not located in line with the long ribs 10a of the long side 1, but staggeredly staggered.

The long ribs 10a and 10b and the short ribs 20a and 20b, which are ribs on the side surfaces, are formed to protrude out of the container, and the through ribs 30a and 30b and the connecting rib 30c of the bottom surface 3 are formed. ) Is preferably projected into the container. In the case of the laver tray, all the ribs 10a, 10b, 20a, 20b, 30a, 30b, and 30c may protrude to have a height of about 2 mm. Of course, if the container becomes large, such as a fruit tray, its height can be modified as appropriate.

First connecting ribs which bend the first long ribs 10a and the first long ribs 20a adjacent to each other at the bottom of each other at corner portions where the long side surface 1 and the short side surface 2 meet. 40a is formed, and it is preferable that a second connecting rib 40b is formed to bend the adjacent second long rib 10a and the second long rib 20a to each other at a bottom surface thereof. As such, by forming the first connection ribs 40a and the second connection ribs 40b at the corners, the strength of the tray can be further improved.

4 is a schematic cross-sectional diagram cut along the line AA ′ of FIG. 1. The bottom surface 3 of the tray 100 is provided with a plurality of through ribs 30a parallel to the short side surface 2 at regular intervals and staggered alternately with the long ribs 10a of the long side surface 1. Connection ribs 30c for connecting adjacent through ribs 30a are formed at regular intervals. The central portion 50 of the bottom surface 3 may be arbitrarily deformed so that the through ribs may be deformed from 30a to form like 30b, but does not significantly affect the strength of the food tray. In other words, the through ribs may be deformed to some extent by the formation of the central portion 50, but the skeleton does not affect the change in tray strength. In FIG. 4, the height of the central portion 50 is shown at the same height as the through ribs 30a or 30b, but is not limited thereto and may be formed at a lower height than the through ribs 30a or 30b.

Under cut (70) is formed of a plurality of directly under the sealing portion 4, which is to facilitate the sealing fixing by maintaining the gap when stacking the food tray 100, which is conventional Most are also formed in the tray.

Food tray according to the present invention can be applied to both synthetic resin film such as PET, PP, PS.

Although the present invention has been described using a laver as an example, but not limited thereto, various seaweeds including laver, strawberries, cherry tomatoes, peaches, blueberries, kiwis, blueberries, etc. It can be applied to any tray that packs nuts such as almonds.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: intestinal side 2: short side
3: bottom surface 4: sealing part
5: bend 10a, 20a: long rib
10b, 20b: short ribs: 30a, 30b:
30c: connecting rib 40a, 40b: first and second connecting rib
50: center part 70: under cut
100: food tray

Claims (6)

In the food tray 100 which consists of two opposing long side surfaces 1, two opposing short side surfaces 2, and a bottom surface 3,
Long ribs 10a and short ribs 10b are alternately formed in the vertical direction on the long side surface 1, and the long ribs 10a are formed to penetrate the bent portion 5, and the short ribs 10b are formed. Is formed only on the long side (1) until just before the bend (5),
Long ribs 20a and short ribs 20b are alternately formed in the vertical direction on the end side 2, and the long ribs 20a are formed to penetrate the bent portion 5, and the short ribs 20b ) Is formed only on the end side (2) until just before the bend (5),
A plurality of through ribs 30a are formed on the bottom surface 3 so as to be parallel to the end side surface 2 at regular intervals, and connecting ribs 30c connecting the adjacent through ribs 30a to each other are at regular intervals. Formed into,
The through ribs 30a of the bottom surface 3 are not located in line with the elongated ribs 10a of the long side 1, but staggered staggered in a structure having excellent strength. Tray made of food.
The long rib 10a and the short rib 10b of the long side 1 may be formed one by one or two alternately, or the long rib 10a is one and the short rib 10b. Food trays made of a structure having an excellent strength, characterized in that the two can be formed alternately.
The long rib 20a and the short rib 20b of the short side 2 may be formed one by one or two alternately, or the long rib 20a is one and a short. Rib (20b) is a food tray made of a structure having excellent strength, characterized in that the two can be formed alternately.
4. The ribs of the side, the long ribs 10a, 10b and the short ribs 20a, 20b are formed so as to protrude out of the container, and the through ribs 30a, 30b of the bottom surface 3. ) And the connecting rib (30c) is a tray for food made of a structure having excellent strength, characterized in that protruding into the container.
The corner portion where the long side side 1 and the short side side 2 meet each other, wherein the adjacent first long rib 10a and the first long rib 20a are bent from each other at the bottom. A first connecting rib 40a for connecting is formed, and a second connecting rib 40b for bending the adjacent second long rib 10a and the second long rib 20a to each other at a bottom surface thereof is formed. Food tray consisting of a structure having an excellent strength, characterized in that.
The food tray according to any one of the preceding claims, wherein the tray is made of a PET film (Polythylene Terephthalate Film) having a thickness of 0.30 mm.

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