JP6522291B2 - Decompression vessel - Google Patents

Description

  The present invention relates to a heat-packed depressurization vessel. More specifically, the present invention relates to the improvement of the structure of a heat-packed depressurized container made of synthetic resin with rigidity and heat resistance.

  A container made of synthetic resin for heat filling is used, in which contents such as seasoning and cooking oil are filled at a temperature higher than normal temperature (herein referred to as heat filling). Since the internal pressure decreases when the temperature of the heat-packed content decreases, the container must have heat resistance and rigidity enough to ensure pressure resistance.

  Heretofore, as such a heat-packed depressurization container, a container having a squeezing property has been proposed to squeeze the contents by pressing the body of the container (bottle) (eg, for example, Patent Document 1). As described above, according to the heat-packed decompression container having the squeezing property, more contents can be taken out by squeezing the body of the container.

Unexamined-Japanese-Patent No. 2013-141993

  However, in order to provide the heat filling and decompression container with the necessary rigidity and heat resistance, it must be thick, which is a contradictory factor to the provision of squeezing properties. That is, it is difficult to impart practical squeeze property since it is difficult to deform even if the body is pressed if the thickness is large. In this respect, in the above-mentioned patent document 1, although the body of the container is formed in a curved shape smoothly bulging in the outer peripheral direction to try to achieve both the rigidity and the squeezing property, the opposite shape is None of the heat-packed depressurization containers having a necked portion (waist portion) have squeezing properties.

  Then, an object of this invention is to provide the heat-packed pressure reduction container of the structure which is easy to take out the contents by squeezing a waist part which is narrow.

  In order to solve this subject, the inventor conducted various studies. If it is possible to squeeze the waisted part (waist part), it is possible to squeeze while holding the easy-to-hold waist part and put out the contents, which is excellent in usability. As a result of further studies from this point of view, it is possible to obtain knowledge leading to the solution of such problems.

The present invention, which has been conceived based on such findings, has rigidity and heat resistance in which the internal pressure decreases when the temperature of the heat-packed content decreases at a temperature higher than normal temperature. In the heat-packed decompression container made of synthetic resin,
The heat-packed decompression container is
The mouth,
A body including a shoulder connected to the mouth, a waist connected to the shoulder, a waist having a circular cross section, a lower body connected to the waist, and a bottom connected to the lower body;
And have
The body portion or the bottom portion is formed with a panel portion that prevents other portions from being dented and deformed by being deformed inward at the time of pressure reduction,
The waist portion is characterized in that it has a shape which is gently necked to such an extent that the resistance at the time of deformation when squeezed by the user or the like is smaller than the resistance at the time of deformation when not squeezed.

  If the waist narrows rapidly (the curvature is large), the resistance at the time of deformation is large. This is even more so for a heat-packed depressurization vessel, which is of a certain thickness to obtain rigidity. On the other hand, since there is no constriction, a corresponding resistance occurs when it is deformed. In this respect, the waist portion in the heat-packed depressurization container according to the present invention is gently necked to such an extent that the resistance at the time of deformation when squeezed by the user or the like is smaller than the resistance at the time of deformation when not squeezed. Because of its shape (wave shape), it is easy to squeeze while having rigidity to withstand pressure changes (decompression). In more detail, the loose neck portion is a trigger for deformation at the time of squeeze (caught, trigger), and the resistance at the time of deformation is reduced, so it is easy to deform without squeezing strongly. Therefore, there is also an advantage that it is easy to adjust the squeeze amount.

  In addition, as compared with a container having a squeeze portion in a bulging shape, the heat-packed decompression container according to the present invention has a shape in which the squeeze portion is constricted inward, so squeezing while holding the waist portion that is easy to hold The contents can be taken out and it is easy to use.

  Also, the panel portion of the body of the heat-packed depressurization container comprises a plate-like portion that is more easily deformed than the other portions due to the influence of pressure change, and the other portion is dented and deformed by being deformed inwardly at the time of pressure reduction. Deter Therefore, when the temperature of the heat-packed contents is lowered and the internal pressure is reduced, the degree of the pressure reduction can be alleviated by the deformation of the panel portion.

  However, although the degree of pressure reduction is alleviated by the deformation of the panel portion, it does not become pressureless (that is, the degree of decrease of the internal pressure is zero), and parts other than the panel portion are crushed and deformed by the effect of pressure reduction. There is a possibility of In this respect, in this heat-packed depressurization container, the waist portion of the appropriately constricted shape also has a function as a rib, and it is thinner than the conventional container of the shape in which the squeeze portion is expanded. It is easy to secure the strength. For this reason, it can suppress that parts other than a panel part are crushed and deformed by the influence of pressure reduction.

  I will add further explanation. As described above, while the conventional heat resistant squeeze container has to be made thicker in order to secure rigidity and heat resistance, in the heat-packed pressure-reduced container according to the present invention, the pressure is reduced This is characterized in that the degree of reduced pressure is reduced by deforming the panel portion as a countermeasure against deformation, and such a characteristic structure is more suitable for making the reduced pressure vessel thinner than conventional. Moreover, since the resistance at the time of deformation of the waist portion decreases as the thickness decreases, a synergistic effect can be realized such that squeezing is further facilitated.

  In such a heat-packed decompression container, it is preferable that the waist portion is deformed into an elliptical shape or a shape similar to this when the squeeze is performed.

  In addition, it is preferable that the waist portion has a structure that, when squeezed, causes the deformation resistance to increase before the opposing inner surfaces of the squeezed portion contact with each other.

  Furthermore, it is preferable that the heat-packed depressurization container has a structure that prevents any of the waist, the shoulder and the lower torso from being broken when the waist is deformed.

  Further, in the heat-packed decompression container, it is preferable that the resistance at the time of restoration after squeezing and deforming the waist portion is a structure that is small enough not to prevent the restoration.

  It is preferable that a plurality of the panel portions be arranged at equal intervals in the circumferential direction in the trunk portion. For example, the number of panel portions may be six, and may be disposed every 60 ° in the circumferential direction.

  The heat-packed decompression container is, for example, a container made of polyester resin to which heat resistance is imparted by heat-setting a shoulder, a waist and a lower torso.

  According to the present invention, it is possible to realize a structure in which the contents can be easily taken out by squeezing the waist portion which is narrow.

It is a perspective view showing an example of a heat stuffing decompression container. It is a front view of a heat stuffed decompression container. It is a figure when 30 degrees of hot stuffed decompression containers shown in FIG. 2 are rotated. It is a longitudinal cross-sectional view in the IV-IV line of FIG. It is a top view of a heat stuffed decompression container. It is a bottom view of a heat stuffed decompression container. FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 2; It is the figure which looked at the mode when squeezing the heat-packed pressure reduction container from the front. It is the figure which looked at the mode when squeezing the heat-packed pressure reduction container from the upper direction (the direction of the discharge port). It is a graph which shows the relationship of the force and deformation amount when squeezing a heat-packed decompression container.

  Hereinafter, with reference to the drawings, a heat-packed decompression container according to an embodiment of the present invention will be described.

  The heat filling and depressurizing container 1 is a container made of a synthetic resin having rigidity and heat resistance, in which the internal pressure is reduced when the temperature of the heat-packed contents is lowered at a temperature higher than normal temperature. . The heat-packed depressurization container 1 has a mouth 2 and a body 8. The body 8 has a shoulder 3, a waist 4, a lower body 5 and a bottom 7 (see FIG. 1 etc.). Below, the heat-packed pressure-reduction container 1 made from the polyester resin to which heat resistance was provided by heat-setting at least the shoulder part 3, the waist part 4, and the lower torso part 5 is demonstrated to an example. More specifically, the heat-packed depressurization container 1 is a hard plastic bottle made of, for example, biaxial stretch blow-molded polyethylene terephthalate (PET). Although the type of contents is not particularly limited, the heat-packed decompression container 1 of the present embodiment as described below is suitable as a container for heat-packing, for example, seasonings, particularly low-viscosity seasonings, is there.

  The mouth 2 is an opening for filling the contents or for discharging the filled contents. The mouth portion 2 is formed thicker than the other portions (the shoulder portion 3, the waist portion 4 and the lower body portion 5) to such an extent that the mouth portion 2 is not easily deformed even when an external force is applied. Further, an annular projection 21 for attaching a discharge cap (not shown) having a discharge port and a nozzle is formed on the port 2 (see FIG. 2 and the like). A thread may be formed instead of the annular protrusion 21.

  The shoulders 3 are formed so as to be smoothly connected from the mouth 2 to the waist 4 (see FIG. 2 and the like). The cross section at the shoulder 3 is circular.

  The waist portion 4 is a flexible portion formed so as to be smoothly connected to the shoulder portion 3 (see FIG. 4 and the like). The cross section at the waist 4 is circular. In addition, the waist portion 4 has a shape that is gently necked (see FIG. 2 and the like). Although it is difficult to specifically explain the degree of the “slowly constricted shape” mentioned here, at least the resistance at the time of deformation when squeezed by the user etc. is greater than the resistance at the time of deformation when not squeezed It has a shape that is gently constricted to a lesser extent. Such a gently necked shape reduces the resistance at the time of deformation, leading to a structure that is easily deformed even without squeezing. On the way from the shoulder portion 3 to the waist portion 4, a maximum portion (displacement portion) having a circular cross section and a maximum diameter is formed.

  The lower torso portion 5 is formed to be smoothly continuous from the waist portion 4 to the bottom portion 7 (see FIG. 2 and the like). In the heat-packed depressurization container 1 of the present embodiment, a panel portion 6 is formed in the lower body portion 5.

  The panel portion 6 is a plate-like portion formed so as to be more easily deformed than other portions by the influence of pressure change. These panel portions 6 prevent the other portions from being dented and deformed by being deformed inward at the time of pressure reduction. Although the specific configuration of such a panel unit 6 is not particularly limited, for example, in the heat-packed decompression container 1 of the present embodiment, the six panel units 6 are equally spaced in the circumferential direction in the lower body 5 It is disposed at every 60 ° (see Fig. 5 and Fig. 7 etc.). The panel portion 6 has a rounded and substantially triangular shape (see FIG. 2 and the like), and is formed such that the approximately flat inner side faces each face the center of the heat-packed depressurization container 1 (see FIG. 7). Small ribs 61 in the vertical or horizontal direction may be formed in each panel portion 6 (see FIG. 7 and the like). The rib 61 gives appropriate rigidity to the panel 6 and changes the ease of deformation at the time of pressure reduction. In addition, the rib 61 suppresses the waving (wave-like deformation) of the panel portion 6.

  Further, the specific shape of the heat-packed depressurization container 1 is not particularly limited, either, but the ratio of the maximum diameter at the shoulder 3 to the minimum diameter at the waist 4 has rigidity to withstand pressure change (decompression). It is preferable that the heat-packed depressurization container 1 which is small in resistance during deformation and easy to be deformed even without squeezing is in a range to realize.

  Then, the mode etc. when squeeze the heat-packed pressure-reduction container 1 of the above-mentioned this embodiment as mentioned above are demonstrated.

  First of all, in a general conventional heat-packed depressurization container, it must have a suitable thickness to ensure the required rigidity and heat resistance, and in the first place, the squeezed part (waist part) is squeezed There is no idea or composition itself to do. For example, if this is a straight container, the resistance at the time of deformation (load felt as a reaction force on the finger) curve becomes a chevron curve, the resistance is largest at a certain position, and beyond that the deformation resistance is usually reduced is there. Also, the amount of deformation of the container follows this, and the amount of deformation suddenly increases as if buckling occurs. For this reason, the power adjustment at the time of squeeze is difficult. Or, for example, even if it is a container having a necked portion (waist portion), usually, the deformation resistance is large and hard, and it hardly deforms even if squeezing, or only the portion pressed by the finger even if it is deformed If it deforms in a collapsing manner and further force is applied, a local sharp bend (a phenomenon such as buckling) may occur, and in some cases a trace of the bend may remain.

  In this respect, according to the heat-packed decompression container 1 of the present embodiment, the waist 4 is a squeeze portion, and the waist 4 is not squeezed in resistance when deformed. It has a shape that is gently constricted to an extent that it is less than the resistance at the time of deformation, and is totally deformed when squeezed (see FIGS. 8 and 9). Moreover, since the gently narrowing portion serves as a trigger for deformation at the time of squeeze and reduces resistance at the time of deformation, it is easily deformed even without squeezing strongly.

  At the time of the squeeze deformation, the waist portion 4 spreads outward to a portion immediately beside (90 ° apart on both sides) the portion pressed by the finger. At the time of the squeeze deformation, the waist portion 4 in the heat-packed pressure-reduction container 1 of the present embodiment is deformed into an elliptical cross section or a shape approximating this (see FIG. 9).

  In addition, if the degree of necking of the waist portion 4 is steep (if the difference or ratio between the large diameter portion and the small diameter portion is large), the squeeze becomes rather difficult. One of the reasons is that the portion just beside the portion pressed by the finger is unlikely to protrude to the outside. In this respect, the heat-packed decompression container 1 of this embodiment has a gentle wave shape. The squeeze shape is designed with consideration for ease of holding and holding while suppressing deformation resistance.

  Moreover, the waist part 4 in the heat-packed pressure-reduction container 1 of this embodiment is a structure which makes a deformation resistance increase, before squeezed, the opposing inner surfaces of the squeezed part contact. The reason is that the deformation resistance rapidly increases when the portion just beside the portion pressed by the finger protrudes to the outside to some extent, and it is difficult to further protrude to the outside (FIG. 9, FIG. 9). 10).

  Furthermore, although there is a relation with the material, in the heat-packed depressurization container 1 of the present embodiment, when the waist portion 4 is deformed, the waist portion 4, the shoulder portion 3 and the lower torso portion 5 are broken. There is no For this reason, there is no such thing as a bending habit that affects the deformation operation at the time of squeeze.

  Moreover, in the heat-packed pressure-reduction container 1 of this embodiment, after the waist portion 4 is squeezed and deformed, the resistance at the time of restoration is small to such an extent that the restoration is not impeded. For example, if the magnitude of deformation resistance during squeeze deformation is a chevron, the maximum value of resistance is exceeded during squeeze, so at the time of restoration, the maximum value must again be exceeded, which hinders smooth restoration. It could be In this respect, in the case of the heat-packed decompression container 1 of the present embodiment, as described above, it has a gentle wave shape, and deformation resistance at the time of squeezing is suppressed, and the squeezed parts face each other. Since the deformation resistance is increased before the inner surfaces come in contact with each other, the change in magnitude of the deformation resistance during the squeeze deformation is small (see FIG. 10). Therefore, the resistance at the time of restoration after the waist portion 4 is squeezed and deformed may be small enough not to prevent the restoration.

  The above-described embodiment is an example of the preferred embodiment of the present invention, but is not limited to this, and various modifications can be made without departing from the scope of the present invention. For example, the squeezing property (flexibility) of the waist portion 4 can be indicated to the user etc., for example, by describing it in the package of the container.

  Moreover, although the above-mentioned embodiment demonstrated the heat-packed pressure-reduction container 1 in which the panel part 6 is formed in the lower trunk | drum 5, this is only a suitable example. The panel portion 6 may be formed on a portion of the trunk portion 8 other than the lower trunk portion 5, for example, the bottom portion 7. The point is that the panel portion 6 is to reduce the degree of pressure reduction after heat packing by deformation of the panel portion 6, and in that range, the area (pressure reduction absorption area) where the panel portion 6 is formed is It is not particularly limited.

  Moreover, in the above-mentioned embodiment, when the temperature of the heat-packed contents is lowered at a temperature higher than normal temperature, the internal pressure is reduced, and the heat-packed decompression container 1 provided with rigidity and heat resistance As described above, the squeezeability (flexibility) of the heat-packed decompression container 1 does not change even when it is filled with contents (for example, non-carbonated beverages etc.) at normal temperature or lower than this. Nor. The point is that although the name of the above-mentioned container is "heat packing decompression container", this is a container suitable for heat packing, not a container used only for heat packing.

  The present invention is applied to a synthetic resin heat-packed depressurization vessel provided with rigidity and heat resistance, in which the internal pressure is reduced when the temperature of the heat-packed contents is lowered at a temperature higher than normal temperature. Preferred.

DESCRIPTION OF SYMBOLS 1 ... heat packing decompression container 2 ... mouth part 3 ... shoulder part 4 ... waist part 5 ... lower trunk part 6 ... panel part 7 ... bottom part 8 ... trunk part

Claims (7)

In a synthetic resin pressure reduction vessel provided with the rigidity and heat resistance necessary for the heat filling and pressure reduction vessel,
The decompression vessel is
The mouth,
A body including a shoulder connected to the mouth, a waist connected to the shoulder, a waist having a circular cross section, a lower body connected to the waist, and a bottom connected to the lower body;
And have
The body portion or the bottom portion is formed with a panel portion that prevents other portions from being dented and deformed by being deformed inward at the time of pressure reduction,
The decompression container characterized in that the waist portion has a shape that is gently necked to such an extent that the resistance at the time of deformation when squeezed by the user is smaller than the resistance at the time of deformation when not squeezed.   The pressure reducing container according to claim 1, wherein the waist portion is deformed into an elliptical shape or a shape approximate to an elliptical shape when squeezed.   The pressure reducing container according to claim 2, wherein the waist portion has a structure that, when squeezed, causes the deformation resistance to increase before the opposing inner surfaces of the squeezed portion contact with each other. The decompression container according to any one of claims 1 to 3 , wherein a resistance at the time of restoration after squeezing and deforming the waist portion is a structure that is small enough not to prevent the restoration. The pressure reducing container according to any one of claims 1 to 4 , wherein a plurality of the panel portions are arranged at equal intervals in the circumferential direction in the body portion. The pressure reducing container according to claim 5 , wherein the number of the panel portions is six, and the number of the panel portions is set every 60 ° in the circumferential direction. The vacuum container, the shoulder portion, wherein the waist portion and the lower body portion is a container made of polyester resin in heat resistance is heat set is imparted to any one of claims 1 to 6 Decompression vessel as described in.

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