JPH0748546Y2 - Tofu container made of synthetic resin - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a tofu container manufactured by an appropriate molding method such as a vacuum molding method, a blow molding method, and an injection molding method using a synthetic resin sheet material.

<Prior Art> This kind of tofu container made of a synthetic resin sheet is, as it has already been put into practical use and widely known, that a tofu producer appropriately mixes an uncoagulated tofu stock solution (bean juice) and bitter juice (nigari). It is used to immediately seal or to cool without unsealing, to solidify the tofu stock solution using the container itself as a mold, and to supply it to the distribution channel as it is. In many of these known containers, ribs extending from the upper part of the container toward the bottom are appropriately formed mainly on the side wall for the purpose of reinforcing the side wall.

<Problems to be solved by the device> A consumer who purchases the tofu contained in the container solidified as described above turns the container upside down and takes out the tofu contained therein. There was a tendency that it was difficult to separate the tofu from the inner surface of the container at the part in contact with the boundary part or the corner part, especially at the part where the reinforcing ribs moved to the flat bottom surface. Therefore, the extracted tofu easily loses its shape in these parts, and the beautiful shape of the container as it is cannot be reproduced. This is not only a problem of commercial value but also a problem that wastes valuable food resources because waste of tofu attached to the container is wasted.

One of the reasons why it is difficult to peel the tofu from the side wall to the bottom of the container and at the corners is that the air entering from the upper edge of the container, which is located below the container during the unloading operation, has a sharp angle. It can be mentioned that it is difficult to sufficiently move to the above-mentioned transition region, especially in the vicinity of the rib. Moreover, it is considered that the slip resistance between the surface of the reinforcing ribs and the tofu is larger in this transition region than in other portions.

Therefore, the problem to be solved by the present invention is to provide a structure capable of promoting the release of tofu from a container having a reinforcing rib.

<Means for Solving the Problems> In order to achieve this object, in the present invention, in a container formed of a synthetic resin sheet material and protruding from the side wall on the side wall thereof, the protrusion of the reinforcing rib from the side wall. The height gradually decreases from the top of the container to the bottom,
There is provided a tofu container characterized by having an inclined posture that is narrowed downward with respect to a side wall.

The overall shape of the container is generally a rectangular lunch box shape, and the upper part is slightly larger in inner diameter than the lower part or the bottom, that is, the side wall is tapered so as to be slightly widened toward the end. It is common to have a flange on the outer circumference for convenience of transportation. However, it goes without saying that it can have any other shape such as a round shape or no flange.

In the case of a rectangle, the relationship between the corner and the vicinity of the lower end of the reinforcing rib is important. That is, according to the present invention, the sliding or releasing of the tofu at the transition from the side wall to the bottom in the lower end region of the reinforcing rib is improved. The appearance will be emphasized, and the amount of tofu remaining in the area may increase. Therefore, in the case of a rectangle, it is necessary to make the radius of curvature of the corner portion considerably larger than the radius of curvature in the transition region from the other side wall to the bottom, as will be described in the examples below.

<Operation> Since the tofu container of the present invention is configured as described above, when the tofu solidified inside is taken out, it is formed between the side wall reinforcing ribs whose height is sufficiently reduced just before the bottom of the container. Has a smaller slip resistance than conventional ones. This is a particularly remarkable effect when a plurality of ribs are closely arranged side by side. This is because the air that enters the side wall-to-bottom transition region in an irregular flow state is not obstructed by the steep adjacent rib group.

<Embodiment> Next, an embodiment of the present invention will be described.

The tofu container shown in FIG. 1 has a rectangular shape as shown in the figure, and four side walls (2) rising from the bottom (1) have
Three reinforcing ribs (3) are formed on each wall in groups. The outwardly projecting flange (4) surrounding the upper edge of the container and the bottom (1) are integrally formed with the side wall (3), but they are not provided with ribs. Multiple ribs in each group, 3 in this example
The ribs of the book are adjacent to each other and enhance the reinforcing effect.

As is apparent from FIG. 2, the side wall (2) has a tapered state in which the side wall (2) widens upward from the bottom (1).

As shown in FIGS. 3 to 5, the reinforcing rib (3) is integrally formed with the side wall (2) to reinforce the side wall. It projects from the side wall toward the center of the container, and its height (H) is gradually lowered from the upper part (Fig. 3) to the middle position (Fig. 4) to the lower part (Fig. 5). There is.

Also in FIGS. 3 and 5, the lower part of the drawing is the inside of the container, as in FIG.

In the transition region (5) from the side wall (2) to the bottom (1), the rib (3) disappears, and the radius of curvature (R1) of the inner surface of the transition region is the appearance of the tofu extracted after solidification. It is set to be as large as possible so as not to damage the tofu and to allow smooth removal by minimizing the adherence of the tofu pieces during the extraction.

The corners (6) on the four sides are the places where chipping is most likely to occur due to residual tofu pieces during removal.

Therefore, in the present invention, the radius of curvature at the corner portion (6) is adjusted so that the height (H) of the rib is gradually reduced toward the transition area and the rib disappears in the transition area. (R2) (Fig. 7) is set to be sufficiently larger than the radius of curvature (R1) (Fig. 6) at other points. In the illustrated example, (R2) is about twice or more than (R1).

With such a configuration, the mold release property of the tofu at the peripheral edge of the bottom of the container is improved in a well-balanced manner over the entire circumference, and as shown in FIG. 8, the tofu (T) taken out upside down has its upper peripheral edge. There is no chipping at all.

The present invention is not limited to the above embodiments, and any modification may be made to the above embodiments as long as the requirements described in the scope of utility model registration are satisfied.

For example, a container having a circular or elliptical shape, in which case the reinforcing ribs are evenly distributed over the entire circumference of the side wall, and since there is no corner, the above-mentioned difference in curvature radius is unnecessary. The flange is useful for temporary attachment of the sealing plastic film, but when sealing is not required, the flange can be omitted, and other modifications can be made.

<Effect of the Invention> As described above, according to the present invention, it is assumed that the protruding height of the reinforcing rib from the container side wall is gradually reduced from the top to the bottom of the container, and is narrower than the side wall. As the tofu is tilted upside down, when the container is turned upside down to remove the tofu, the air flows around the bottom of the container through the reinforcing ribs when the tofu falls, so the conventional reinforcing ribs and bottom The problem of shape collapse, which was inevitable in the vicinity of the boundary area between and, has been resolved, there is no need to pay attention to the operation of taking out the tofu that has solidified inside, and there is no risk of loss due to adhesion residue on the inside of the container and high commercial value. We can supply consumers with beautiful tofu.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an embodiment of a tofu container according to the present invention, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. Is a sectional view taken along the line III-III in FIG. 2, and FIG. 4 is also IV-
Sectional view taken along arrow IV, FIG. 5 is a sectional view taken along line VV, FIG. 6 and FIG. 7 are sectional views taken along line VI-VI and VII-VII of FIG. 1, and FIG. It is an inverted perspective view shown. 1 ... bottom, 2 ... side wall, 3 ... reinforcing rib, H ... reinforcing rib height, T ... tofu.

Claims (1)

[Scope of utility model registration request] 1. A synthetic resin sheet material, which is rectangular and has an upper opening partly wider than a lower bottom part, and a side wall which is tapered from the bottom toward the upper end and is provided on the side wall. In the container in which the reinforcing rib projects from the side wall toward the central part of the container, the protruding height of the reinforcing rib from the side wall gradually decreases from the upper part to the bottom part of the container, and the inclination of the bottom narrows with respect to the side wall. A container for tofu made of synthetic resin, characterized in that it is formed in a posture so that the lower end of the reinforcing rib goes around the transition region of the lower edge of the side wall of the container to the bottom and reaches the bottom.