JP4613469B2 - Cooling water mixing prevention cap - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cap that is screwed into a spout portion of a container that is cooled by showering after liquid content is filled at a high temperature.
[0002]
[Prior art]
In the past, containers such as liquid paper containers, soft packaging material pouches, plastic bottles, etc., were hot-filled with liquid contents and sealed, and then the containers were shower cooled with cooling water to prevent deformation of the containers. . In this cooling process, the container in which the cap is screwed into the spout is reduced in volume and the inside of the container is depressurized to deform the container and the cap, and at the same time, the inner peripheral surface of the cap and the outer periphery of the spout of the container The air in the space between the surface contracts and is in a reduced pressure state, and cooling water sometimes enters between the lower end of the peripheral wall of the cap and the spout part of the container. To prevent this, for example, a plurality of horizontal air supply slits are provided at equal intervals in the circumferential direction above the peripheral wall, or vertical air supply grooves are provided in the circumferential direction on the inner peripheral surface of the peripheral wall forming the female screw. Several were provided at intervals, or both were used together.
[0003]
[Problems to be solved by the invention]
However, in the case where the air supply slit is provided above the peripheral wall, cooling shower water droplets may be mixed from the slit, and the air supply groove is provided on the inner peripheral surface of the peripheral wall forming the female screw. Things were incomplete because air and cooling water could be supplied together.
[0004]
The present invention solves the above-described conventional problems, and cools between the inner peripheral surface of the peripheral wall of the cap and the outer peripheral surface of the outlet portion of the container in the shower cooling step after the liquid content is filled at a high temperature. A cap with cooling water mixing prevention that prevents water from mixing is provided.
[0005]
[Means for Solving the Problems]
That is, the first invention is a cap that is screwed into a spout portion of a container that is cooled by showering after the liquid contents are filled at a high temperature, and the vertical air is formed on the inner peripheral surface of the peripheral wall forming the female screw of the cap. A plurality of supply grooves are provided at equal intervals in the circumferential direction, and the lower end hem is expanded to the outside together with the inner and outer peripheral surfaces so that the lower end skirt of the peripheral wall protrudes outward from the peripheral wall . The cap with cooling water mixing prevention is characterized in that a wide space for preventing suction of cooling water in a decompressed state is formed between the peripheral surface and the outer peripheral surface of the outlet portion of the container.
[0006]
Next, according to a second aspect of the present invention, in the cooling water mixing prevention according to the first aspect, the spout portion of the container is a spout attached to a pouring position of the liquid paper container. With a cap.
[0007]
Next, according to a third aspect of the present invention, the cap with cooling water mixing prevention according to the first aspect is characterized in that the spout portion of the container is a spout attached to a pouch pouring position. It is.
[0008]
And the 4th invention of the present invention is the cap with cooling water mixing prevention according to the 1st invention, wherein the spout part of the container is a mouth and neck part of a plastic bottle.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the cap with cooling water mixing prevention according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is a cross-sectional view of a cap with cooling water mixing prevention according to an embodiment of the present invention, and FIG. 2 is a spout that projects the cap with cooling water mixing prevention into a cap attachment hole of a liquid paper container. It is sectional drawing when screwing.
[0010]
The cap with cooling water mixing prevention according to the present invention is a cap that is screwed into a spout portion of a container that is cooled by showering after the liquid content is filled at a high temperature. As shown in FIG. 2, it is used by being screwed into a spout (200) (outlet portion) that is projected by heat sealing with an internal seal using an ultrasonic sealing method or the like, as shown in FIG. As shown in FIG. 1, the structure of an embodiment of the cap (100) is a contact sealing ring (200) for sealing the spout (200) of the container (300) on the lower surface of the top plate (110). 111) and an inner sealing ring (112), and a vertical air supply groove (122) is formed on the inner peripheral surface of the peripheral wall (120) forming the female screw (121) screwed with the male screw of the spout. Normally six are provided at equal intervals in the circumferential direction It is intended. Further, as shown in FIG. 2, the lower end skirt (123) is expanded to the outside together with the inner and outer peripheral surfaces so that the lower end skirt (123) of the peripheral wall (120) protrudes from the peripheral wall (120) . A wide space (101) is formed between the inner peripheral surface of the lower end skirt and the outer peripheral surface of the lower end of the spout tube (220) of the spout (200) for preventing suction of cooling water in a reduced pressure state. It is. In addition, the spout (200) shown in FIG. 2 has a cap (100) on the outer peripheral surface at the inner peripheral edge of the upper surface of the annular pedestal portion (210) that has a flange (240) that is heat-sealed with the container at the outer periphery of the lower end. A pouring cylinder (220) having a male screw (221) is erected, and a sealing plate (230) is provided on the inner lower side of the pouring cylinder to seal it, and a vertical cross section is V-shaped on the bottom surface of the sealing plate. An annular thin cut (231) is provided to form an annular thin line of weakness (232) at a planned opening position on the lower surface, and a column (233) that connects a pull ring (234) to the tip on one side of the upper surface near the inner side of the annular cut. ).
[0011]
The cap with cooling water mixing prevention according to the present invention is used not only by being screwed onto the spout attached to the liquid paper container pouring position described above, but also attached to the pouring position of the soft packaging material pouch. It can be used by being screwed onto the mouth or neck of a plastic bottle.
[0012]
And the container which screwed the cap with cooling water mixing prevention of the present invention into the spout part is the outer peripheral surface of the cap inner peripheral surface and the container spout part in the shower cooling process after filling the liquid contents at high temperature. Even if the air in the space between the two is contracted by cooling to become a reduced pressure state, and air with water droplets is sucked from the gap between the lower end of the peripheral wall of the cap and the spout part of the container, as shown in FIG. The lower end skirt (123) of the peripheral wall (120) of the cap (100) has a lower end skirt (123) that is larger in diameter toward the outside than the peripheral wall (120). A wide space (101) is formed between the inner peripheral surface of the container and the outer peripheral surface of the outlet portion (200) of the container to prevent the cooling water from being sucked in a reduced pressure state. In addition, water drops remain in this space due to the difference in specific gravity. There is sucked upward. The air sucked up is a vertical air supply groove (a plurality of vertical air supply grooves provided at equal intervals in the circumferential direction on the inner peripheral surface of the peripheral wall (120) forming the female screw (121) of the cap (100) shown in FIG. 122), it can easily reach the entire circumference. On the other hand, as shown in FIG. 3, the container in which a conventional ordinary cap is screwed to the spout part is formed on the inner peripheral surface of the lower end of the peripheral wall (120) of the cap (100) and the spout part (200) of the container. The space between the outer peripheral surface is narrower than the space (101), and air with water droplets is sucked upward as it is.
[0013]
【The invention's effect】
When the cap with cooling water mixing prevention according to the present invention is screwed into the spout portion of the container for cooling the shower after filling the liquid contents at a high temperature, in the shower cooling step, the inner peripheral surface of the peripheral wall of the cap and the spout portion of the container Cooling water can be prevented from mixing with the outer peripheral surface.
[Brief description of the drawings]
FIG. 1 is a sectional view of a cap with cooling water mixing prevention according to an embodiment of the present invention.
2 is a cross-sectional view when the cap with cooling water mixing prevention according to the present invention shown in FIG. 1 is screwed into a spout protruding from a cap attachment hole of a liquid paper container.
FIG. 3 is a cross-sectional view of a conventional example of a cap that is screwed into a spout protruding from a cap attachment hole of a liquid paper container.
[Explanation of symbols]
100 ...... cap 101 ... ... spatial <br/> 110 ...... top plate 111 ...... contact sealing rings 112 ...... inner sealing ring 120 ...... peripheral wall 121 ...... female screw 122 ...... air supply grooves 123 ... ... skirt part 200 ... spout or spout part 210 ... annular pedestal part 220 ... pour tube 221 ... male screw 230 ... sealing plate 231 ... annular notch 232 ... annular thin wall weak wire 233 ... column 234 …… Pull ring 240 …… Flange 300 …… Liquid paper container 301 …… Top inclined plate

Claims (4)

A cap that is screwed into a spout portion of a container that is cooled by showering after the liquid contents are filled at a high temperature, and a vertical air supply groove is provided in the circumferential direction on the inner peripheral surface of the peripheral wall forming the female screw of the cap. A plurality of the lower end hems are provided at intervals, and the lower end hems are expanded to the outside together with the inner and outer peripheral surfaces so that the lower end hems protrude outward from the peripheral walls. A cap with cooling water mixing prevention is characterized in that a wide space for preventing suction of cooling water in a reduced pressure state is formed between the outer peripheral surface of the cooling water .   The cap with cooling water mixing prevention according to claim 1, wherein the spout portion of the container is a spout attached to a liquid paper container.   The cap with cooling water mixing prevention according to claim 1, wherein the spout portion of the container is a spout attached to a pouch pouring position.   The cap with cooling water mixing prevention according to claim 1, wherein the spout part of the container is a mouth and neck part of a plastic bottle.

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