JPH0737260B2 - Pressure resistant, heat resistant bottle - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a pressure-resistant and heat-resistant bottle with a base attached, and more specifically, sterilization by heating the contents of the bottle by bringing it into contact with a heat exchange fluid with the base attached. , Etc. are related to a pressure resistant and heat resistant bottle.

[Prior Art] Cylinder-shaped pressure-resistant and heat-resistant bottles are suitable for use in various fields of manufacturing, storage, and distribution of chemicals or foods, especially beverages. Since it is formed on the base, a base in the shape of a hook (cylindrical shape with a bottom) that covers one end of the hemisphere is attached for the purpose of standing upright during manufacturing, storage, distribution or use.

The purpose of standing was satisfied by mounting the base, but when a fresh drink such as fruit juice containing carbon dioxide gas is enclosed as the content, it is necessary to fill it at a low temperature and then sterilize it for hygiene. A heat exchange fluid such as is poured into the outer wall of the bottle in the form of a shower to heat the contents to an appropriate temperature for sterilization, but the hemispherical part at the lower end covered with the base does not come into contact with hot water, so it is not heated. However, even if convection occurs in the contents, the hemispherical part at the lower end is almost irrelevant, so that the content at the lower hemispherical part is not sterilized.

Regarding this drawback, Japanese Utility Model Laid-Open No. 62-33529 discloses that a base is assembled near the upper opening of the base so that hot water can enter between the bottom of the bottle and the base. It proposes to solve the problem by providing an outlet so that the hot water that has entered can flow out.

Further, according to the embodiment, in order to provide the passage portion, a slit is provided upward on the side wall near the upper end of the base or a window is opened on the side wall.

However, the entrances such as slits and windows are
Due to the structure, it cannot be provided all around the base, and
In order to fix the base to the bottle, it is necessary to leave a considerable amount of the portion other than the through hole near the upper end of the base in terms of strength.

In addition, when the inside of the bottom of the base is joined to the outside of the bottom of the bottle with a hot-melt adhesive, good joining may not be possible due to the action of springback or the like between the bottle and the base.

If the amount is small, the force to hold the bottle near the top of the base will be weakened, and during heating with hot water, due to thermal expansion and other forces, the inside of the base bottom and the outside of the bottle bottom will be hot melted. Even if adhered, the bottle and the base may separate because they are softened by heating. In addition, the verticality of the bottle cannot be maintained even if the bottle is not detached.

Therefore, there is no choice but to leave a considerable amount of parts other than the passage part near the upper end of the base, so when the hot water added to heat the bottle flows through the passage part to the bottom of the bottle, The other side of the base is a blind spot, and there is a drawback that heat conduction is extremely poor.

Further, JP-A-62-235057 discloses that an upper end portion of a base is partially cut in the thickness direction to provide a through hole, and a vertical groove type is provided on a side wall of a bottle near the upper end portion of the base. It is proposed to provide a concave portion of the above and use it as a through hole portion, and to use these together.

However, also in this case, as in the case above, the side wall of the bottle that hits the back side of the base other than the passage portion becomes a blind spot, heat conduction is extremely poor, and depending on the amount of the portion other than the passage portion, There are drawbacks that the base may fall out of the bottle during heating and the verticality cannot be maintained.

(Problems to be solved by the invention) Eliminating the joint failure due to spring back etc. which occurs when joining the base to the bottom of the bottle with a hot melt adhesive, even if hot water is poured and heated, the base is removed from the bottle. It is an object of the present invention to provide a pressure-resistant and heat-resistant bottle equipped with a base that does not fall off or cannot maintain the verticality of the bottle and that evenly heats the bottom of the bottle.

(Means for Solving Problems) That is, the present invention is a pressure-resistant and heat-resistant bottle having a bottom portion protruding in a hemispherical shell shape, in which a separate base is attached to the lower portion of the bottle, and the upper end of the base is attached. The inner circumference is larger than the outer circumference of the bin in the mounting portion, and is 3 on the inner circumference of the upper end of the base.
The projections have points or more, and the projections are substantially evenly distributed, and the bin has a concave portion that fits with the projection in the mounting portion. It is mounted on a bin, and there is a continuous gap between the inner periphery of the upper end of the base and the outer periphery of the bin mounting portion, and a passage for the heat exchange body is provided between the base and the lower main body of the bin. A pressure-resistant and heat-resistant bottle having a discharge port provided at the bottom of the base for communicating the passageway with the outside, and a pressure-resistant and heat-resistant bottle having a bottom protruding in a hemispherical shell shape, which is provided separately at the bottom of the bottle. The base of the base is mounted, the inner circumference of the upper end of the base is larger than the outer circumference of the bin in the mounting part, and there are three or more protrusions on the outer periphery of the mounting part of the bin, and Almost evenly distributed, and fitted with the protrusions on the inner circumference of the upper end of the base. The base is fitted to the bin by fitting it, and there is a continuous gap between the inner circumference of the upper end of the base and the outer circumference of the bin fitting part. A heat-exchanger passage is provided between the lower main body and the main body, and the passage is communicated with the outside through an outlet provided at the bottom of the base.

(Operation of the present invention) The fitting portion of the base is provided with a projection and the fitting portion of the bottle is provided with a recess, or the fitting portion of the bottle is provided with a projection and the fitting portion of the base is provided with a recess. When mounting, the protrusion and the recess are fitted to each other to eliminate defective joints due to springback during mounting, enabling high-speed production,
By making the perimeter of the mounting part of the base larger than the perimeter of the mounting part of the bottle, a continuous gap is formed between the base and the bottle in the mounting part, and the shower of boiling water is evenly distributed over the bottle. The base flows along the bottom to raise the temperature of the bottom quickly, and even if the hot melt that bonds the bottom of the bottle to the base loses its adhesive strength by contacting hot water, the base may fall off the bottle and fall. No bottles, no tilting, and very good verticality.

(Example) An example of the present invention will be described with reference to FIGS.

1 and 6 are cross-sectional views of typical pressure-resistant and heat-resistant bottles of the present invention.

FIG. 1 shows a protrusion on the inside of the base and a recess on the side wall of the bottle, and FIG. 6 shows a protrusion on the side wall of the bottle and a recess on the inside of the base.

FIG. 2 is an enlarged cross-sectional view of the bottom of the pressure-resistant and heat-resistant bottle shown in FIG.

The bottle 1 has a recess 4 into which the protrusion 3 of the base 2 is fitted.

The lower part of the base 2 is in contact with the lower part of the bottle 1, and is usually adhered by an adhesive 6 such as hot melt.

A discharge port 5 is provided at the bottom of the base.

FIG. 3 is a view of FIG. 2 cut along the line XX ′, and 7 is a gap width between the base and the bin.

The size of this width is not particularly specified, but about 0.3 to 1.0 mm is suitable.

Although 8, 9 and 10 are protrusions provided inside the base, the number of protrusions is required to be at least three, and an appropriate number of protrusions can be provided. See FIG.

The number of protrusions is required to be at least three, but in order to maintain the verticality of the bottle, it is necessary that the protrusions are arranged almost uniformly inside the base.

If the three points 8, 9 and 10 are offset to almost one place, when the Holtmelt adhesive is softened by hot water,
There is a risk that the verticality of the bottle may not be maintained.

FIG. 5 shows an example of the shape of the recess 4 on the side wall of the bottle and the shape of the projection 3 on the inner side of the base.

FIG. 7 is an enlarged cross-sectional view of the bottom of the pressure resistant and heat resistant bottle shown in FIG.

The bin 11 has a convex portion 13 and is fitted in a concave portion 14 of the base 12.

The lower part of the base 12 is in contact with the lower part of the bottle 11, and is usually adhered by an adhesive 6 such as Holtmelt.

A discharge port 15 is provided at the bottom of the base.

FIG. 8 is a view of FIG. 7 cut along the line YY ', and 17 is the gap width between the base and the bin.

The size of this width is not particularly specified, but about 0.3 to 1.0 mm is suitable.

Although 18, 19 and 20 are protrusions provided on the side wall of the bottle, the number of protrusions needs to be at least three, and an appropriate number of protrusions can be provided. See FIG.

The number of protrusions is required to be at least three, but in order to maintain the verticality of the bottle, it is necessary that the protrusions are arranged almost uniformly on the side wall of the bottle.

If the three points of 18, 19 and 20 are offset to almost one place, when the hot melt adhesive is softened by hot water,
There is a risk that the verticality of the bottle may not be maintained.

FIG. 10 shows an example of the shape of the protrusion 13 on the side wall of the bottle, which is the type of the shape of the recess 14 inside the base.

[Brief description of drawings]

1 to 10 show an embodiment of the present invention. 1,11 …… bin, 2,12 …… base, 3,13 …… projection, 4,14…
… Concave part, 5,15 …… Discharge port, 6,16 …… Joint part, 7,17 …… Gap width.

Claims (2)

[Claims] 1. A pressure-resistant and heat-resistant bottle having a bottom portion protruding in a hemispherical shell shape, wherein a separate base is attached to the lower portion of the bottle, and the inner circumference of the upper end of the base is the inner diameter of the bottle in the attachment portion. The projections are larger than the outer circumference and have three or more projections on the inner circumference of the upper end of the base, and the projections are substantially evenly distributed, and the bottle is a recess that fits with the projections in the mounting portion. And the base is attached to the bin by fitting it, and there is a continuous gap between the inner periphery of the upper end of the base and the outer periphery of the bin attachment portion. A pressure-resistant and heat-resistant bottle having a heat exchanger passage provided between the lower main body and the discharge passage provided at the bottom of the base for communicating the passage with the outside. 2. A pressure-resistant and heat-resistant bottle having a bottom portion protruding in a hemispherical shell shape, wherein a separate base is attached to the lower portion of the bottle, and the inner circumference of the upper end of the base is the bottle at the attachment portion. The protrusions are larger than the outer circumference of the bottle and have three or more protrusions on the outer periphery of the mounting portion of the bottle, and the protrusions are substantially evenly distributed, and the protrusions are formed on the inner periphery of the upper end of the base. The base has a fitting recess, and the base is fitted to the fitting. There is a continuous gap between the inner circumference of the upper end of the base and the outer circumference of the bin fitting portion. A pressure-resistant and heat-resistant bottle, wherein a heat exchanger passage is provided between the main body and the lower portion of the bottle, and the passage is communicated with the outside through an outlet provided at the bottom of the base.