JP3056271U - Heat-resistant container - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To prevent the side wall surface of a body part from expanding and deforming outside of a container when filling high-temperature contents, to improve the quality of the container, and to easily take out a boxed container. The present invention provides a heat-resistant container having a rectangular shape. SOLUTION: The present invention relates to a heat-resistant container having a body portion 20 including a narrow side wall surface 22 and a wide side wall surface 24 and having a substantially rectangular cross section. On the lower side of the wide side wall surface 24, a curved surface 40 that curves inward from both sides is formed vertically. The curved surface is formed gradually deeper from above to below.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a heat-resistant container, and more particularly to a body structure of the heat-resistant container.

[0002]

[Problems to be solved by background art and invention]

 As is well known, for example, a container biaxially stretch blow-molded using polyethylene terephthalate (PET) has many advantages in terms of gas barrier resistance, transparency, toughness, hygiene, and the like.

[0003] One of the containers obtained by biaxial stretch blow molding is a so-called heat-resistant container. This heat-resistant container is a container that can be filled with contents such as juice heated for sterilization.

[0004] As one of such heat-resistant containers, there is a rectangular container having a body formed in a substantially rectangular cross section.

However, in such a container, when the high-temperature content is filled, the lower part of the side wall surface of the trunk may bulge outward and deform due to the load of the content.

[0006] In particular, in a container having a body formed in a rectangular cross section, such a situation tends to occur remarkably on a wide side wall surface.

Such bulging and deformation of the side wall surface due to the load of the contents not only impairs the commercial value of the container, but also makes it difficult to take out the container when the container filled with the contents is packed in a box. There was a problem.

An object of the present invention is to prevent the side wall surface of the body from bulging out of the container and deforming the container at the time of filling with high-temperature contents, thereby improving the quality of the container and facilitating the removal of the boxed container. It is an object of the present invention to provide a square heat-resistant container which can be used for a long time.

[0009]

[Means for Solving the Problems]

 In order to achieve the above object, the invention according to claim 1 is directed to a heat-resistant container having a body section which is surrounded by a side wall surface and has a substantially rectangular cross section, wherein the side wall surface is inward from both sides. It is characterized by being gradually depressed.

According to the present invention, in a heat-resistant container having a body having a substantially rectangular cross section, the side wall surface of the body is gradually depressed toward the inside of the container. Even if the body side wall surface swells due to the load of the filling contents, it can be prevented from protruding outward from the linear position connecting both sides of the side wall surface, and the appearance and quality are good and it is packed in a box. In this case, it can be easily taken out.

[0011] The invention according to claim 2 is a heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, wherein the wide side wall surface is inward from both sides. It is characterized by being gradually depressed toward it.

According to the present invention, in a heat-resistant container having a body portion having a substantially rectangular cross section, the wide side wall surface of the body portion is gradually depressed toward the inside of the container, so that high-temperature contents are filled. In this case, even if the wide side wall surface which is likely to expand due to the load of the filling content expands, it can be prevented from protruding outward from a linear position connecting both sides of the wide side wall surface. Moreover, it can be easily taken out even when packed in a box.

The invention of claim 3 is: In a heat-resistant container including a body portion including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, a lower side of the wide side wall surface is gradually depressed inward from both sides. It is characterized by being formed.

According to the present invention, in a heat-resistant container having a body portion having a substantially rectangular cross section, the lower portion of the wide side wall surface of the body portion is gradually depressed toward the inside of the container, so that the high-temperature content is increased. Even if the lower portion of the wide side wall that is likely to expand due to the load of the filling content when filling is filled, it can be prevented from protruding outward from a linear position connecting both side pieces of the wide side wall. It has good appearance and quality, and can be easily taken out even when packed in a box.

[0015] The invention according to claim 4 is a heat-resistant container having a body portion having a substantially rectangular cross section including a narrow side wall surface and a wide side wall surface, wherein a lower side of the wide side wall surface is provided from both sides. A curved surface that curves inward is formed vertically.

According to the present invention, in a heat-resistant container having a body portion having a substantially rectangular cross section, a curved surface that curves inward of the container is formed below the wide side wall surface of the body portion. Even if the lower part of the wide side wall that is swellable due to the load of the filling contents swells when filled, it can be prevented from protruding outward from the linear position connecting both sides of the wide side wall. It has good appearance and quality, and can be easily taken out even when packed in a box.

The invention according to claim 5 is a heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface, and having a substantially rectangular cross section, wherein a lower side of the wide side wall surface is formed from both sides. A curved surface that curves inward is formed in a vertical direction, and the curved surface is formed so as to gradually and deeply bend from a linear state from above to below.

According to the present invention, in a heat-resistant container having a body portion having a substantially rectangular cross section, when a high-temperature content is filled, the lower portion of the wide side wall surface due to the load of the filled content, and even in this lower portion. Because the lower side is easy to swell, a curved surface that curves toward the inside of the container is formed at the lower side of the wide side wall surface of the body, and the curved surface is adjusted from the upper side to the lower side so that it can easily swell. The curved surface is gradually curved deeper from the straight line, so that even if the curved surface expands, the curved surface is prevented from protruding outward from the linear position connecting both sides of the wide side wall surface, and the curved surface is made substantially uniform. It is good in appearance and quality, and can be easily taken out even when packed in a box.

The invention according to claim 6, wherein a heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, wherein a filling content is provided on a lower side of the wide side wall surface. It is characterized by forming an inwardly curved surface that can offset the amount of outward bulging due to the load.

According to the present invention, in the heat-resistant container having a body portion having a substantially rectangular cross section, the curved surface provided on the lower side of the wide side wall surface of the body portion is provided at the lower portion of the wide side wall surface due to the load of the filling contents. By offsetting the amount of outward bulging on the side, even if the curved surface swells, it prevents the curved surface from protruding outward from the linear position connecting both sides of the wide side wall surface, and the curved surface has a substantially uniform surface. It is good in appearance and quality, and can be easily taken out even when packed in a box.

The invention according to claim 7 has a body including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, and the body portion is arranged at a substantially central position in a vertical direction in a circumferential direction. A continuously provided reinforcing circumferential groove, a reduced pressure deforming portion formed below the reinforcing circumferential groove on the wide side wall surface and deforming under reduced pressure when reducing the volume, and a laterally extending portion between the reinforcing circumferential groove and the reduced pressure deforming portion. A heat-resistant container having a reinforcing lateral groove provided over the wide side wall, wherein the curving portion curves downward from the reinforcing circumferential groove on the wide side wall surface toward the inside from both sides and gradually deepens from above to below. It is characterized by forming a surface.

According to the present invention, when a high-temperature content is filled in a heat-resistant container having a body portion having a substantially rectangular cross-section, the lower portion of the wide side wall surface due to the load of the filled content, and even the lower portion. Because the lower side is easy to swell, a curved surface that curves toward the inside of the container is formed at the lower side of the wide side wall surface of the body, and the curved surface is adjusted from the upper side to the lower side so that it can easily swell. The curved surface is gradually curved deeper from the straight line, so that even if the curved surface expands, the curved surface is prevented from protruding outward from the linear position connecting both sides of the wide side wall surface, and the curved surface is made substantially uniform. It is good in appearance and quality, and can be easily taken out even when packed in a box.

Further, by forming the curved surface downward from the reinforcing circumferential groove, the reinforcing circumferential groove can be prevented from becoming shallow, and the reinforcing circumferential groove can be sufficiently reinforced. It is possible to prevent a situation in which the user cannot grasp the upper part of the cradle and return to the state when the cradle is grasped by hand.

Further, the reduced pressure deforming section surely reduces the volume at the time of filling the high-temperature contents, thereby preventing the deformation of the whole shape of the container and further improving the quality of the container.

[0025]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.

FIG. 1 to FIG. 7 are views showing a heat-resistant container according to an embodiment of the present invention.

FIG. 1 shows a front view of the heat-resistant container 10.

The heat-resistant container 10 is formed into a capacity of, for example, about 2 l by biaxial stretch blow molding using, for example, polyethylene terephthalate (PET), and includes a neck portion 12 including an opening at an upper end side and a neck portion 12. A shoulder portion 14 extending downward from the neck portion 12, a bottom portion 16 on the lower end side, a heel portion 18 extending upward from the bottom portion 16, and a trunk portion 20 formed between the heel portion 18 and the shoulder portion 14. And are integrally molded.

The trunk portion 20 is formed in a substantially rectangular cross section having two narrow side wall surfaces 22 and two wide side wall surfaces 24 that are respectively arranged to face each other.

In the body portion 20, chamfered portions 26 are formed at four intersections between the narrow side wall surface 22 and the wide side wall surface 24 in the height direction, so as to reinforce the intersection. ing.

Further, a reinforcing circumferential groove 28 that is depressed inward is formed at a substantially central position in the vertical direction of the body portion 20.

The reinforcing circumferential groove 28 is provided continuously in the circumferential direction across the narrow and wide side wall surfaces 22, 24 and the chamfered portion 26. The part 20 is divided into upper and lower parts.

As described above, the reinforcing circumferential groove 28 is formed at an intermediate position in the vertical direction of the trunk 20, so that the reinforcement against the side pressure of the trunk 20 is performed at the intermediate position in the vertical direction of the trunk 20, By dividing the portion 20 into small units in the vertical direction, the buckling deformation of the body portion 20 is prevented.

In the narrow and wide side wall surfaces 22 and 24, decompression deformable portions 30 a, 30 b and 32 a and 32 b which can be decompressed at the time of decompression of the volume of the contents are respectively provided at upper and lower positions with the reinforcing circumferential groove 28 interposed therebetween. Is provided.

Further, between the upper decompression deformed portions 30 a and 32 a and the reinforcing peripheral groove 28, reinforcing lateral grooves 34 are respectively formed in the lateral direction.

In addition, between the upper portions of the lower decompression deformation portions 30 b and 32 b and the reinforcing peripheral groove 28 and between the lower portions of the lower decompression deformation portions 30 b and 32 b and the heel portion 18, there are reinforcing lateral grooves 36, respectively. 38 are formed in the lateral direction.

Further, on the wide side wall surface 24 constituting the body portion 18, a curved surface 40 that curves downward from the reinforcing circumferential groove 28 from both sides toward the inside of the container is formed in the vertical direction.

Specifically, as shown in FIG. 7, which is a cross section taken along the line EE in FIG. 1, the curved surface 40 is based on a linear portion intersecting the reinforcing circumferential groove 28 located at the upper end thereof. It is formed so as to gradually become deeper toward the lower heel portion 18, and the radius of curvature of the curved surface 40 is set so as to match this depth.

Therefore, the cross sections AA, BB, CC, and DD of FIG. 1 are respectively shown in FIGS. 2, 3, 4, and 5, and the radii of curvature R 3 to R 1, and It is set so that it becomes closer to a straight line toward the linear portion of AA, that is, the radius of curvature gradually increases. FIG. 6 shows a state in which the sections from AA to DD are combined.

The water pressure of the high-temperature contents filled in the heat-resistant container 10 increases as going downward, and the amount of swelling due to the water pressure increases as going downward, so that the curved surface 40 extends from above to below. By forming the curved surface 40 gradually deeper, the curved surface 40 after swelling can form a uniform flat surface.

Further, at the lowermost position of the curved surface 40, as shown in FIG. 7, it does not protrude beyond a line connecting both sides due to bulging due to the filling of the high-temperature contents, ie, the position of the chamfered portion 26. Is set to the depth d.

Therefore, when the heat-resistant container 10 is packed in a box, it is possible to prevent a state in which the bulging portions are pressed against each other and it is difficult to remove the container.

Further, by making the position of the reinforcing peripheral groove 28 of the curved surface 40 linear, the strength of the reinforcing peripheral groove 28 is maintained by preventing the depth of the reinforcing peripheral groove 28 from becoming shallow by the curved surface 40. Thus, when the vicinity of the reinforcing circumferential groove 28 is grasped by hand, it is possible to prevent the recess from being returned.

The present invention is not limited to the above embodiment, and can be modified into various embodiments within the scope of the present invention.

For example, in the above-described embodiment, a container having a body having a substantially rectangular cross section has been described. However, the container is not limited to this example, and may have a body having a substantially square cross section. .

In the above-described embodiment, the curved surface is formed on the two wide side wall surfaces. However, the present invention is not limited to this example, and the curved portion may be formed on the two narrow side wall surfaces. A curved portion may be formed on all four side wall surfaces of a substantially square body.

Further, in the above-described embodiment, the curved surface is formed on the lower side of the trunk portion. However, the present invention is not limited to this example, and the curved surface may be formed over the entire vertical wall surface of the trunk portion. .

Further, in the above-described embodiment, the case where the amount of bulge is offset by the curved surface has been described. However, the present invention is not necessarily limited to the case of the curved surface, and is constituted by a straight line or a combination of a straight line and a curve. The surface may be formed, and the point is that it is formed so as to be gradually depressed from the side toward the inside, and can be offset from the swelling amount at the time of filling the high-temperature contents.

In this case, the surface that can be offset by the amount of swelling at the time of filling the high-temperature contents does not necessarily need to be formed so as to be gradually deeper from the upper part to the lower part, but to have a uniform depth from the upper part to the lower part. It is also possible.

[0050]

[Brief description of the drawings]

FIG. 1 is a front view showing a heat-resistant container according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a sectional view taken along line CC of FIG. 1;

FIG. 5 is a sectional view taken along the line DD of FIG. 1;

FIG. 6 is an explanatory diagram showing a state in which a cross section taken along line AA and a cross section taken along line DD are combined.

FIG. 7 is a longitudinal sectional view taken along the line EE of FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Heat-resistant container 20 Body 22 Narrow side wall surface 24 Wide side wall surface 28 Reinforcement peripheral groove 30a, 30b, 32a, 32b Decompression deformation part 34, 36, 38 Reinforcement lateral groove 40 Curved surface 42 Flat part

Claims (7)

[Utility model registration claims] 1. A heat-resistant container having a body surrounded by a side wall and formed in a substantially rectangular cross section, wherein the side wall is formed so as to be gradually depressed inward from both sides. A heat-resistant container characterized by the following. 2. A heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, wherein the wide side wall surface is gradually depressed inward from both sides. A heat-resistant container characterized in that it is formed without being bent. 3. A heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, wherein a lower side of the wide side wall surface is gradually inward from both sides. A heat-resistant container characterized by being formed in a recess. 4. A heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface and formed in a substantially rectangular cross section, and curving inward from both sides toward a lower side of the wide side wall surface. A heat-resistant container, wherein a curved surface is formed in a vertical direction. 5. A heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, wherein a lower side of the wide side wall surface is inward from both sides. A heat-resistant container, wherein a curved surface that bends is formed in an up-down direction, and the curved surface is formed so as to gradually and deeply bend from a linear state from above to below. 6. A heat-resistant container having a body portion including a narrow side wall surface and a wide side wall surface and formed in a substantially rectangular cross section, wherein a lower portion of the wide side wall surface has an outer side caused by a load of a filling content. A heat-resistant container formed with an inwardly curved surface that can be offset by the amount of bulge into the container. 7. A body including a narrow side wall surface and a wide side wall surface and having a substantially rectangular cross section, the body portion being provided at a substantially central position in the vertical direction and continuously in the circumferential direction. A pressure reducing deformable portion formed below the reinforcing circumferential groove on the wide side wall surface and deforming under reduced pressure when reducing the volume; and provided in a lateral direction between the reinforcing circumferential groove and the pressure reducing deforming portion. In a heat-resistant container having: Characteristic heat-resistant container.