JPH1015038A - Tray to be used for heat sterilizing treatment for plastic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deformation of container and to provide uniform heating sterilization by dripping hot water from the water pool part of prescribed depth formed on the lower porous nest plate surface of double bottom to the tray of lower step when hot water is supplied from the inlet part of a hot water spray. SOLUTION: A water tank type tray 2 to be used for the heat sterilizing treatment of a plastic container 1 is constituted to drip hot water from a water pool part 13 of depth for about 2-7mm on the surface of a lower porous nest plate 3 of the double bottom to the water tank type tray 2 of the lower step when hot water is supplied from the inlet part of the hot water spray. Therefore, while keeping the water level without directly hitting the plastic container 1 of the lower step, hot water overflows, returns to a circulation route, passes through a pump and a heat exchanger and circulates so as to be spouted from the hot water spray again with the suitable temperature and quantity. Thus, since the hot water is spouted from the hot water spray and dripped from the water pool part 13 without directly hitting the plastic container 1, the plastic container 1 is not deformed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for heating and sterilizing a solid-liquid mixture or a drug, food or other liquid to be treated which is loaded in a plastic container made of a soft wrapping material such as polyethylene using a retort sterilizer. It is about trays.

[0002]

2. Description of the Related Art Conventionally, in a spray-type heat sterilizing retort apparatus, a gap is provided between trays stacked in a plurality of stages, and a high-temperature and high-pressure hot water spray is sprayed into the gap, and the hot water is applied to a plastic container. Drugs or foods are heat-sterilized. In this case, as shown in FIG. 10, the hot water spray 16 of high temperature and high pressure is sprayed from both sides of the tray 17 toward the center of the gap between the trays, and the sprayed hot water tends to concentrate on the center of the tray. There is.

A known example of such a configuration is disclosed in Japanese Patent Application No.
Japanese Patent Application Laid-Open No. Sho 60-228222 discloses a known example in which a tray is provided with a hot water spray, an overflow hole, and a drain hole to circulate a processing solution.

[0004]

In the case of treating a container using a soft wrapping material such as polyethylene among plastic containers with a spray-type heat sterilizing retort apparatus, a container provided with an overflow hole provided in a water tank type tray is provided. If the water level of the processing liquid is maintained substantially equal to the liquid level of the liquid, deformation of the container due to the weight of the liquid loaded in the plastic container and the container itself can be prevented. However, in the part where the heating and the pressing force by the hot water spray directly hit the plastic container, the container 18 is easily deformed such as the dent 19 as shown in FIG. 11, and this deformation is caused by the central part of the tray where the hot water spray 20 concentrates. It was found to occur frequently.

[0005] An object of the present invention is to prevent the injection of hot water spray from directly hitting the plastic container as described above, thereby preventing deformation of the container and achieving uniform heat sterilization of the plastic container. It is intended to provide trays for use in processing.

[0006]

In order to achieve the above object, according to the first aspect of the present invention, a large number of plastic containers which can be stacked in a plurality of stages and contain a solid-liquid mixed solution or a drug, food or other liquid to be treated are used. A water tank type tray to be loaded into a box formed by a partition plate, wherein a side wall (a) and (a) each having an overflow slit on two sides facing each other across a bottom surface and having an overflow water receiving portion. Two side walls (b) and (b) having hot water spray inlets formed on the other two sides facing each other with the bottom face interposed therebetween, and two porous nests forming a gap following the hot water spray inlet. When hot water is supplied from the inlet of the hot water spray, a water reservoir having a water depth of about 2 to 7 mm is formed on the porous nest plate surface below the double bottom. It is formed so that hot water drops from this sump to the lower tray. It was trays used in the time of heat sterilization of plastic containers.

[0007] In the second invention, a water tank type tray stacked in a plurality of stages is inserted into a heat sterilization apparatus and sprayed with hot water spray from both sides to heat sterilize the liquid to be treated in the plastic container. The water level reaching the overflow slit is maintained in the mold tray, and a water reservoir having a water depth of about 2 to 7 mm is formed on the porous nest plate surface below the double bottom by hot water spray. Heat sterilization of a plastic container which is dropped from the small hole of the plate to the lower tray and circulates and supplies hot water through a circulation system having a pump and a heat exchanger while maintaining the water level due to overflow again The tray was sometimes used.

In the third invention, among the two porous nests forming the double bottom, the pores of the upper porous nest are provided in such a size and quantity that the water level of the tray can be maintained, and The pores of the porous nest plate are provided in a size and amount suitable for dripping at the position where they are dropped on the partition plate of the lower tray, and the tray used during the heat sterilization treatment of the plastic container so as not to directly hit the plastic container And

In the fourth invention, the overflow water receiving portions provided on the two side walls (a) and (a) facing each other with the bottom surface of the water tank type tray interposed therebetween collect the overflowed water and interfere with the lower tray. The tray was used for heat sterilization of a plastic container provided to drain water at a corner without a hole. In the fifth invention, the tray used in the heat sterilization treatment of the plastic container is such that the position of the overflow slit provided in the side walls (a) and (a) matches the water level of the liquid to be treated contained in the plastic container. .

In the sixth invention, a through-hole is provided in the bottom of each box for accommodating the plastic container provided in the water tank type tray, and the hook of the bottom of the plastic container passes between the box bottom and the double bottom through this through-hole. The tray was used for heat sterilization of the plastic container loaded so as to be positioned. (Function) In the first invention, the water tank type tray can be stacked in a plurality of stages, and since a large number of plastic containers are loaded in the box, the plastic containers made of a soft packaging material such as polyethylene are stably held on the tray. Is done.

[0011] Since two side walls (a) and (a) facing the water tank type tray have overflow slits and are provided with a receiver for overflow water, the liquid in the plastic container can be appropriately heated and sterilized. Can always be maintained, and the overflowed water is sent to the circulation system via the receiving section. Further, since the hot water spray inlet is provided on the other two side walls (b) and (b) facing each other, when the hot water spray is inserted into the heat sterilization apparatus, the gap following the hot water spray follows the inlet. It can be supplied to the jet.

When the hot water spray is supplied from the inlet to the gap, a water reservoir having a water depth of about 2 to 7 mm is formed on the surface of the porous nest plate below the double bottom, and a lower tray is formed from the water reservoir. The hot water spray once drops on the surface of the porous nest plate and drops, and does not directly hit the plastic container. Therefore, it is possible to prevent the plastic container from being deformed due to the hot water spraying force or high heat.

In the second invention, the water level in the water tank type tray is maintained at the level reaching the overflow slit, and the water level is about 2 to 7 mm by hot water spray on the lower porous nest plate with a double bottom gap. A water reservoir having a depth of water was formed, and hot water was dropped from this water reservoir to a lower tray so as not to directly hit the plastic container. The dropped hot water overflows and is circulated through the circulation system so as to be jetted again from the overflow receiving portion from the hot water spray. A pump, a heat exchanger, and the like are provided in the circulation system so that the temperature control of hot water, the injection amount, and the like can be appropriately adjusted. Therefore, the water depth on the water reservoir, the dripping, and the overflow amount are appropriately controlled and operated.

In the third aspect of the present invention, the water level of the water tank type tray is determined so that the hot water does not flow out significantly on the upper porous nest plate among the two porous nest plates forming the double bottom. Can be held. Further, in the lower porous nest plate, the hot water by the injection of the hot water spray has a size and an amount that can be dropped at a position where the hot water is dropped on the partition plate of the lower tray while maintaining an appropriate water depth as a water reservoir, For example, an oval hole was used so as not to drop directly on the plastic container.

According to the fourth aspect of the present invention, the water tank type tray facing
The overflow water receiving portions provided on the side walls (a) and (a) of the sides collect the overflow water without hindrance to the lower tray and guide it to the corners to drain. In the fifth invention,
Since the positions of the overflow slits provided on the side walls (a) and (a) match the water level of the liquid to be treated contained in the plastic container, the weight of the liquid to be treated can be reduced even in a plastic container made of a soft wrapping material. Deformation of the plastic container due to its own weight was prevented, enabling uniform heat sterilization.

According to the sixth aspect of the present invention, a through hole is provided at the bottom of the box in the water tank type tray, and a hook provided at the bottom of the plastic container is loaded in accordance with the through hole, thereby stabilizing the tray. So that the hook portion is located between the bottom of the box and the double bottom without deformation. The hook provided on the plastic container is used for hanging as a medicine.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION As a water tank type tray, aluminum SU
In S304 (total anodized finish), the outer size including the overflow receiving portion is 1220 mm, the inner size is 1120 mm, and the depth is 1150.
mm and a height of 160 mm were used. 14 plastic containers accommodated in the tray, 20 in the width direction, 20 in the depth direction,
A box containing a total of 280 pieces was provided.

Two porous nests are used on the double bottom of the tray bottom, and the upper porous nest is provided with small holes for draining, and the lower porous nest is partitioned by the lower tray. In order to be able to drop on the board, the hole of 3 mm in diameter has a pitch of 13
143 pieces were provided at a pitch of 11 in the depth direction. Side walls (a) and (a) having overflow slits in the horizontal direction are provided on two sides facing the tray bottom surface, and double side walls (b) and (b) facing the other two sides facing the tray bottom surface are provided. An inlet for hot water spray is formed which is continuous with the gap formed at the bottom. The overflow hole was provided at a height of 62 mm from the surface of the porous nest plate above the double bottom.

A water reservoir having a depth of about 5 mm was formed on the bottom surface of the tray through a double bottom gap, and hot water was dropped on the lower tray. A large number of small holes having a diameter of 3 mm and a pitch of about 11 mm or 13 mm are provided at a position corresponding to the partition plate of the box so that the hot water dropped does not directly hit the plastic container. The hot water accumulates up to the overflow slit position, and the plastic container can be appropriately heated and sterilized. The overflowed hot water is collected through the receiving part, drained at the corners, collected in the circulation system, and pumped. , Through the heat exchanger and again from the hot water spray.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. FIG.
In FIG. 3 to FIG. 3, reference numeral 1 denotes a plastic container which is loaded with a liquid to be treated or a solid-liquid mixture, such as medicine or food. 2
Is an aquarium-type tray, which is provided with an engaging portion by means of concave and convex fitting (above the side wall 8 (a) in FIG. 1) on the periphery so as to be stacked in a plurality of stages. A gap 5 is formed on the bottom surface of the tray 2 as a double bottom by the porous nest plates 3 and 4. The hot water spray 6 is disposed in the gap 5 so as to be jetted and supplied from both sides of the tray 2 (see FIGS. 2 and 5).

Reference numeral 7 denotes a box provided on the tray 2, which is formed by a partition plate, and in which the plastic container 1 is accommodated.
In the illustrated example, a hook 1a is provided at the bottom of the plastic container 1, a through hole 7a is provided at the bottom of the box 7, and the hook 1a of the plastic container 1 is a porous nest having the bottom of the box and the double bottom. It is loaded so as to be located between the plate 3.

FIGS. 4 and 5 show side views of a water tank type tray. Numeral 8 is provided on two sides facing each other with the bottom face sandwiched between the side walls (a) and (a), has an overflow slit 9 on the inner wall surface, and constitutes an overflow water receiving portion 10. 11
Are side walls (b) and (b), which are provided on the other two sides facing each other with the bottom face interposed therebetween, and are provided with an inlet portion 12 for hot water spray.
The inlet portion 12 is continuous with the double bottom gap 5.

The overflow slit 9 is provided at substantially the same position as the liquid level loaded in the plastic container 1,
Hot water is stored in the tray 2 (FIG. 1,
(See FIG. 2). The porous nest plate 3 is provided with holes having a diameter of about 3 mm at an appropriate pitch, and has such a size and quantity that the water level on the tray can be maintained. Also, the porous nest plate 4 is provided with, for example, an elliptical hole so that hot water can be dripped above the partition plate forming the box of the lower tray, so that it does not directly hit the plastic container. I have. In addition,
When the hot water spray is sprayed, the lower porous nest 4
A water reservoir 13 capable of forming a water depth of about 2 to 7 mm was formed on the upper surface (see FIGS. 1, 2, and 6).

FIGS. 7 and 8 show a state in which a water reservoir having a water depth of about 5 mm is formed in the water reservoir 13, and as shown in FIG. Is sprayed from the hot water spray 6 into the gap 5. A constant water level is maintained in the tray 2 via the overflow slit 9 and is the same as the liquid level of the plastic container 1. Hot water from the hot water spray drops from the small holes 14 of the porous nest plate 4 on the bottom surface of the tray 2 to the lower tray and forms a liquid surface on the water reservoir 13. Therefore, the water level is maintained without directly hitting the lower plastic container 1, overflowing, and returning to the circulation path (not shown),
It is circulated through a pump and a heat exchanger (not shown) so as to be sprayed again from the hot water spray at an appropriate temperature and amount. As described above, since the hot water spray is dropped from the water reservoir without directly hitting the plastic container, the container is not deformed.

[0025]

According to the first aspect of the present invention, an overflow slit is provided on one side wall of the tray, and an inlet for the hot water spray is provided on the other side wall. I did it. The hot water spray forms a liquid surface in the water reservoir and is supplied dropwise through the small hole on the bottom onto the lower tray containing the plastic container, so that hot water is directly injected into the plastic container. No deformation of the plastic container occurred at all. Also, in the water tank type tray, the water level equivalent to the liquid level is maintained by the overflow slit so that the heat sterilization can be ensured.

In the second invention, since the overflow liquid from the overflow slit is circulated so as to be jetted from the hot water spray through the circulation system having a pump and a heat exchanger, uniform heat sterilization at a constant temperature is always performed. It is possible.
The hot water sprayed from the hot water spray into the gap of the water tank type tray drops from the water reservoir, so that the plastic container is not deformed at all.

According to the third aspect of the present invention, as a water tank-type tray, a uniform water level can be maintained without deforming the plastic container by maintaining a constant water level on the porous nest plate above the double bottom. Since the liquid surface was formed from the porous nest plate by hot water spray and dripping onto the partition plate of the lower tray was realized, no deformation of the plastic container or the like occurred.

In the fourth aspect of the present invention, overflow water receiving portions are provided on the side walls (a) and (a) facing each other with the bottom surface of the tray interposed therebetween, so that the overflow water can be processed and circulated without any trouble in the lower tray. Was. In the fifth invention, the water level from the overflow slit to the overflow water receiving portion is maintained, and the uniform heat sterilization process is reliably performed at the same level as the liquid level in the plastic container.

According to the sixth aspect of the present invention, a plastic container having a hook at the bottom thereof can be easily loaded and stably heat-sterilized.

[Brief description of the drawings]

FIG. 1 is an explanatory sectional view of a main part of the tray of the present invention.

FIG. 2 is an explanatory sectional view of the same tray as viewed from the other side.

FIG. 3 is a partially omitted plan view of a tray.

FIG. 4 is a side view of the tray.

FIG. 5 is another side view of the tray.

FIG. 6 is a partially omitted plan view of a porous nest plate.

FIG. 7 is a cross-sectional view showing an injection state of a hot water spray.

FIG. 8 is an enlarged sectional view of an essential part of a water reservoir.

FIG. 9 is an explanatory view of loading into a retort device.

FIG. 10 is an explanatory view showing a conventional hot water spray.

FIG. 11 is an explanatory diagram of a deformation of a plastic container.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 plastic container 2 water tank type tray 3, 4 porous nest plate 5 gap 6 hot water spray 7 box 8 side wall (a) 9 overflow slit 10 overflow water receiving part 11 side wall (b) 12 inlet part 13 water reservoir part 14 small hole

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Teruhito Majima 40-8 Higashi Eishi, Kitajima-cho, Kitajima-cho, Itano-gun, Tokushima Hiroyuki Shimomura 10-39 Akaishicho, Komatsushima City, Tokushima Prefecture

Claims (6)

[Claims] 1. A water tank type tray which can be stacked in a plurality of stages, and in which a large number of plastic containers containing a solid-liquid mixture or a medicine, food or other liquid to be treated are loaded into a box formed by a partition plate. The side walls (a) and (a), which have overflow slits on two sides facing the bottom surface and have a receiving portion for overflow water, and hot water sprays on the other two sides facing the bottom surface. A side wall (b) provided with an inlet portion, and a double bottom provided with two porous nests so as to form a gap following the inlet portion of the hot water spray. When hot water is supplied from the inlet portion, a water reservoir having a water depth of about 2 to 7 mm is formed on the porous nest plate surface below the double bottom, and the hot water drops from the water reservoir to a lower tray. During heat sterilization of plastic containers Tray used for 2. A water tank type tray, which is stacked in a plurality of stages, is inserted into a heat sterilization apparatus and sprays hot water spray from both sides to heat-sterilize a liquid to be treated in a plastic container. The water level reaching the overflow slit is maintained, and a water reservoir having a water depth of about 2 to 7 mm is formed on the surface of the porous nest plate below the double bottom by hot water spray. 2. The hot water is circulated and supplied through a circulation system having a pump and a heat exchanger while maintaining a water level caused by overflow again by dropping the hot water from a hole to a lower tray. Tray used for heat sterilization of plastic containers. 3. The small holes of the upper porous nest plate of the two porous nest plates forming the double bottom are provided in such a size and quantity that the water level of the tray can be held, and the lower porous nest plate is formed of the lower porous nest plate. 2. The heat-sterilizing treatment of a plastic container according to claim 1, wherein the small holes of the nest plate are provided in a size and an amount suitable for dripping at a position where the nest plate is dropped on the partition plate of the lower tray, so as not to directly hit the plastic container. The tray to use. 4. A water tank type tray 2 facing the water tank type tray.
2. The plastic container according to claim 1, wherein the overflow water receiving portions provided on the side walls (a) and (a) of the side collect the overflowed water and discharge the water at a corner where the lower tray does not interfere. Tray used for heat sterilization. 5. The heat sterilization treatment of a plastic container according to claim 1, wherein the position of the overflow slit provided in the side walls (a) and (a) coincides with the water level of the liquid to be treated contained in the plastic container. Sometimes used tray. 6. A through hole is provided at the bottom of each box for accommodating the plastic container provided on the water tank type tray, and a hook of the bottom of the plastic container is positioned between the box bottom and the double bottom through the through hole. A tray used for heat sterilization of the loaded plastic container according to claim 1.