JPH0630015U - Wrap packaging dish - Google Patents

Abstract

(57) [Summary] [Purpose] To obtain a container for preventing the heat-welded portion of the heat-shrinkable wrap film from being exposed on the upper surface of the wrap in the packaging of fresh food. [Structure] A container 1 formed of a foamed resin material in a rectangular dish shape, the corners 3, 3 or the corners 3, 3 on the outside thereof.
A large number of irregularities 6 for improving the slippage of the heat-shrinkable wrap film covered with the ridges 5 and 5 during heat shrinkage.
6 is provided. The covered heat-shrinkable wrap film 7 is the container 1
The upper and lower sides of the wrap film are evenly heat-shrunk, and as a result, the heat-sealed portions of the wrap film are located at the upper and lower intermediate portions of the container 1, and the appearance of the packaged product is improved.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a dish-shaped container used for hermetically packing food such as meat and fish and shellfish with a heat-shrinkable wrap film.

[0002]

[Prior art]

 Around this time, fresh foods such as meat, fish and shellfish, vegetables and fruits are sold in small plates that can be thrown away and hermetically wrapped with a highly transparent heat-shrinkable wrap film.

The small plate used for this is generally made of a lightweight foamed resin material such as styrofoam, and is formed in a substantially square shape in a plane and in an inverted trapezoidal shape. In addition, this wrap packaging has been mechanically performed using a highly transparent heat shrink film made of synthetic resin.

That is, as shown in FIG. 4, the food is wrapped with a heat-shrinkable wrap film. First, as shown in FIG. 7. Wrap and wrap, and under the dish-shaped container A, the side ends 10, 10 of the wrap film 7 are put together and heat-sealed to each other 8 to form an annular bond, and then, as shown in FIG. The parts 11, 11 protruding in the front and rear of the container A are heat-welded 9, 9 and sealed. Subsequently, hot air is blown to shrink the wrap film 7, and the wrap film 7 is brought into close contact with the dish-shaped container A as shown in FIG.

However, in the conventional wrap packaging using the heat-shrinkable film, as shown in FIG. 6, the welded portions 9 and 9 of the front and rear ends are located above the dish-shaped container A. Therefore, there is a problem that the appearance is significantly impaired and the product value is deteriorated, and its solution is demanded.

The present invention is intended to solve the above problems and provide a dish-shaped container for wrap packaging in which the heat-sealed portion of the heat-shrinkable wrap film is not located on the upper side. To do.

[0007]

[Means for Solving the Problems]

 The present inventor has conducted various studies on why the heat-welded portion of the heat-shrinkable wrap film in the above-mentioned conventional wrap packaging is positioned above the dish-shaped container when heat-shrinked. As a result of stacking, it was found that this phenomenon occurs because the outer corners and ridges formed on the outside of the dish-shaped container hinder the sliding of the heat-shrinkable wrap film during shrinkage, and the present invention is formed. Came to do.

That is, the wrap packaging dish-shaped container of the present invention is a container 1 made of a foamed synthetic resin material or the like in the shape of a square with a plane quadrangle and an inverted trapezoidal side, and is formed on the outside thereof. Of the outer corner portions 3 and 3 and the ridge portions 5 and 5, at least the outer corner portions 3 and 3 are provided with a large number of irregularities 6 and 6.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. In the figure, reference numeral 1 denotes a dish-shaped container body, which is made of a light-weight foamed resin material such as Styrofoam and has a substantially rectangular flat surface and an inverted trapezoidal side surface. Outside corners 3 and 3 are formed, and ridges 5 and 5 are formed by connecting the four side surfaces 2 and 2 and the back surface 4. The above structure is similar to the conventionally known dish-shaped container.

The dish-shaped container of the present invention comprises the dish-shaped container described above as a main body 1 and a new configuration added thereto. That is, the outer corner portions 3 and 3 are provided with a large number of protrusions for forming a large number of irregularities 6 and 6 along the length direction thereof. Further, the ridges 5 and 5 are also provided with irregularities 6 and 6 in the same manner as described above. The irregularities 6 and 6 may be provided only on the outer corner portions 3 and 3. The concavities and convexities 6 and 6 may be revealed by, for example, embossing, or may be revealed by forming small characters or patterns in a concave or convex shape.

The dish-shaped container of the present invention is constructed as described above, and the wrap packaging is prepared by the conventional method (see FIGS. 4 and 5) in a state where food is put in the dish-shaped container. The wrap film 7 having a high heat-shrinkability is covered, the lower side and the front and rear ends are heat-welded 8, 9 and 9, and hot air is blown to shrink and tightly close the wrap film 7 for sealing. At that time, the wrap film 7 is contracted almost uniformly over the whole, but many irregularities 6, 6 are formed on the outer corner portions 3, 3 of the dish-shaped container, or in addition to this, the ridge portions 5, 5. Since the wrapping film 7 is formed, the wrapping film 7 slides well, and the entire wrapping film 7 shrinks almost uniformly. Therefore, as shown in FIG. 3, the welded portions 9 and 9 at both ends are located substantially in the middle of the upper and lower sides of the dish-shaped container and are in close contact with each other.

[0012]

[Effect of device]

 As described above, according to the dish-shaped container of the present invention, since a large number of irregularities are formed at least at the outer corners thereof, when the heat-shrinkable wrap film sealing the heat-shrinkable wrap film is heat-shrinked, heat-shrinkage is performed. The film is smoothly slipped due to the heat shrinkage of the flexible wrap film. As a result, it is possible to prevent the heat-sealed portions of the front and rear ends of the heat-shrinkable wrap film from being located on the upper surface of the dish-shaped container, and the appearance as a wrap package is improved. As a result, the product value can be improved, and the food items contained in the product can be easily viewed as a whole, making it convenient for customers.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the dish-shaped container of the present invention.

FIG. 2 is a bottom view of the same.

FIG. 3 is a perspective view showing a state of the wrap packaging.

FIG. 4 is an explanatory view of a wrap packaging process, and is a perspective view of a heat-shrinkable wrap film in a wrapped state.

FIG. 5 is a perspective view showing the same heat-welded state.

FIG. 6 is a perspective view showing a state of conventional wrap packaging.

[Explanation of symbols]

 A dish-shaped container 1 dish-shaped container body 2 side surface 3 outer corner portion 4 back surface 5 ridge portion 6 unevenness 7 heat-shrinkable wrap film

Claims (1)

[Scope of utility model registration request] A container formed by a foamed synthetic resin material, etc., in the shape of a plate with a square quadrangular shape and an inverted trapezoidal side surface, and at the outer corners and ridges formed on the outer side thereof, at least a large number of irregularities are provided. A dish-shaped container for wrapping, which is characterized in that