JP5046263B2 - Cap for liquid dispensing container - Google Patents

Description

  The present invention relates to a cap for a liquid dispensing container, particularly a cap for a liquid dispensing container for storing fermentable food products and the like.

A lower lid provided with a pour tube is fitted into the container mouth tube portion, and a top ring provided with a sealing ring for sealing the pour tube is vertically screwed onto a screw tube standing on the lower lid. The cap of the liquid extraction container made to be made is conventionally known (for example, refer patent document 1).
JP-A-10-59397

  However, if ketchup, seasoning, or other fermented foods are stored, the fermented gas fills the container and the pressure inside the container increases, and when the top lid is opened, the contents are contained with the gas. There was a risk that objects would erupt from the dispensing tube and scatter around.

  An object of the present invention is to solve the above problems, improve the related structure of the sealing ring of the cap upper lid and the dispensing cylinder, and at the time of opening the lid, firstly, the gas accumulated in the container is released, It is an object of the present invention to provide a cap for a liquid discharge container in which contents are ejected by internal pressure and are not scattered around.

In order to solve the above-described problems, the present invention provides a substantially straight cylindrical pouring as a cap of a liquid pouring container, which is fitted to a container mouth tube portion and has a spout lip portion whose diameter is increased upward at the upper end. In the cap of the liquid pouring container comprising a lower lid provided with a discharge tube and a sealing ring that seals the inner periphery of the discharge tube, the lower outer periphery of the sealing ring is reduced in diameter. The upper part of the reduced diameter part is fitted to the lower part of the spout lip when fastened to the lower lid of the upper lid, and the seal has a vertical length of 0.1 to 0.3 mm and a horizontal fastening margin of 0.1 mm . The structure characterized by forming the part is adopted.

As another embodiment of the cap, a lower lid provided with a substantially straight pipe-out pipe provided with a spout lip part, which is fitted in the container mouth pipe part and expands upward at the upper end; In the cap of the liquid dispensing container, which has a sealing ring that seals the periphery, and an upper lid that is screwed to the lower lid, the lower end of the sealing ring fits under the spout lip when fastened to the lower lid of the upper lid In addition, a configuration characterized in that a seal portion having a vertical length of 0.1 to 0.3 mm and a horizontal tightening margin of 0.1 mm is formed.

  In the invention of the present application, since the seal ring fitted to the lower part of the spout lip of the spout cylinder provided on the bottom cover of the cap is provided on the sealing ring of the top cover of the cap, the vertical length of the seal part becomes extremely short. Since the tightening allowance between the seal part and the dispensing cylinder is very small, if it is turned to unscrew the top cover, gas leakage will begin and the internal pressure can be reduced. Even when the gas pressure increases due to fermentation of the product, it is possible to prevent scattering of the content liquid to the surroundings when the lid is opened.

  Next, examples of the liquid dispensing container of the present invention will be described with reference to the drawings.

1 and 2, A is a bottle, and B is a cap composed of a lower lid B1 and an upper lid B2.
The bottle A is formed from a synthetic resin or glass, and a fitting protrusion 2 and a neck ring 3 are provided on the mouth tube portion 1.

  The lower cover B1 of the cap B is fitted to the container mouth tube portion 1, the upper cover B2 is screwed to the lower cover B1, the upper cover B2 is formed of PP, the lower cover B1 is formed of PE, and other synthetic resins. ing.

The lower cover B1 of the cap B includes a fitting cylinder 5 and an upper wall 6 that are fitted to the container mouth cylinder 1 and a fitting cylinder 7 that is fitted to the inner periphery of the container mouth cylinder 1.
A fitting protrusion 8 that engages with the lower surface of the fitting protrusion 2 is provided at the lower end of the inner periphery of the fitting cylinder 5, and the upper edge of the fitting cylinder 5 is inclined from the upper surface of the upper wall 6. A protruding ring 10 having a rising inclined surface 9 on the inside is formed.

A mounting cylinder 11 is erected on the upper surface of the upper wall 6 so as to extend the fitting cylinder 7, and a screw 12 for screwing the upper lid B 2 is engraved on the outer peripheral surface of the mounting cylinder 11. Has been.
A mounting plate 13 that protrudes inward is provided at the upper end of the mounting tube 11, and an extraction tube 14 that extends vertically is connected to the inner peripheral edge of the mounting plate 13.

The upper part of the extraction cylinder 14 is expanded outward to form an outlet lip 15, and a partition wall 16 is connected to the lower end of the extraction cylinder 14.
On the lower surface of the partition wall 16, a cutting groove 17 is engraved leaving a thin wall inside the dispensing cylinder 14, and the partition wall 16 inside thereof is a removal portion. A finger ring 18 is provided.

The upper lid B2 of the cap B includes a top wall 20 and a side peripheral wall 21. A knurled is engraved on the outer peripheral surface of the side peripheral wall 21, and a projecting edge projecting outward from the peripheral surface is provided below the knurled surface. 22 is provided.
Between the projecting edge 22 and the lower end surface 23 of the side peripheral wall 21, an inclined surface 24 is formed obliquely downward from the inner peripheral edge of the projecting edge 22.

A sealing ring 25 that is fitted to the inner periphery of the dispensing tube 14 is provided vertically at the center of the inner surface of the top wall 20, and at the position corresponding to the mounting tube 11 of the lower lid B 1, A screw cylinder 27 engraved with a screw 26 screwed to the cylinder 11 is suspended.
A plurality of ribs are provided between the screwed cylinder 27 and the side peripheral wall 21.

  As shown in FIG. 2B, the sealing ring 25 has a reduced diameter at the outer periphery of the lower end, and a gap 28 is formed between the sealing ring 25 and the outlet cylinder 14, and the upper portion of the gap 28 serves as a sealing portion 29. It fits in the lower part of the part 15.

As shown in FIG. 2, the upper cover B2 of the cap B has the screwing cylinder 27 screwed and fastened to the mounting cylinder 11 of the lower cover B1, and at this time, the lower end surface 23 of the side peripheral wall 21 is above the lower cover B1. The inclined surface 24 is joined to the wall 6 to the inclined surface 9 of the lower lid B1, and the lower end portion of the side peripheral wall 21 is in close contact with the protruding ring 10 and the upper wall 6 of the lower lid B1.
Further, the sealing ring 25 is fitted to the upper inner periphery of the dispensing cylinder 14, and the seal portion 29 seals the spout lip 15.

  At that time, a fastening allowance d is formed between the seal portion 29 and the lower portion of the spout lip 15, and the vertical length s of the seal portion 29 is about 0.1 to 0.3 mm. Is about 0.1 mm.

Next, the function and effect of the first embodiment of the present invention will be described.
Bottle A is filled with heat-sterilized ketchup, seasoning, and other fermentable contents, and cap B with upper lid B2 screwed to lower lid B1 is plugged into container mouth tube 1 Is done.
Next, in the same manner as in the conventional example, the air in the container is sterilized, and cooling water is applied to cool the container.

In use, the top cover B2 is removed, the finger ring 18 is pulled up, the removal portion is removed, and the spout is opened.
When the contents are poured out and the top lid B2 is screwed after the pouring is finished, the contents liquid can be stored.

  During storage after opening, when the contents generate gas due to fermentation, etc., and the internal pressure rises, there is only a small length of tightening margin between the sealing ring 25 of the upper lid B2 and the extraction tube 14, When the upper lid B2 is rotated during use, only a slight angle is rotated. First, gas leakage occurs and the internal pressure decreases. When the upper lid B2 is opened, the contents are sealed from the dispensing tube 14. It does not erupt from between the ring 25.

A leak test was performed and compared with a conventional product (current product) described in Patent Document 1.
Test, attaching the lower cover on the test stand, 0.3 kg / cm ² air pressure, 1.0 kg / cm ^2, for the three pressure of 2.0 kg / cm ^2, the top cover with the torque 100Ncm relative to the lower lid Tightening and marking were made, the upper lid was returned by 5 degrees, and the release position of the seal was measured.
For the prototype, measurement was performed five times for each of the two upper lids (model numbers 1 and 2).
The results are as shown in Table 1.

As is clear from the above measurement results, the seal release angle through which air leaks is 80 to 90 degrees with the current product when the pressure is 0.3 kg / cm ² , whereas it is 15 with the present invention. When it is turned to open the upper lid of the cap, air leakage is first performed with a slight rotation.
This tendency is almost the same when the air pressure is 1.0 kg / cm ² .

At an air pressure of 2.0 kg / cm ² , in the case of the present invention, the seal release angle was 0 degree.
That is, it can be seen that air leakage occurs despite the presence of the seal portion 29.
The above is the result of the leak test. Even if fermentation gas is actually generated from the contents, even when the lid is opened, the gas leaks first, even if a large amount of fermentation gas is generated and the internal pressure increases, Gas does not escape from the portion 29, and the internal pressure does not reach a certain level.

  In the above embodiment, the reduced diameter portion is formed over the entire circumference of the sealing ring 25. However, the gap 28 may be provided intermittently at regular intervals.

Next, a second embodiment in which the length of the sealing ring of the upper lid is changed will be described.
In the said Example, although the diameter of the downward direction of a sealing ring is reduced, this Example cuts the downward direction of a seal part.
Hereinafter, the difference will be mainly described.

As shown in FIG. 3, the cap B includes a lower lid B1 and an upper lid B2 similar to those of the first embodiment, and the upper lid B2 is a sealed seal that is suspended from the top wall 20, the side peripheral wall 21, and the top wall 20. It consists of a ring 30 and a threaded cylinder 27.
The sealing ring 30 extends to the lower end of the spout lip 15 of the spout cylinder 14 of the lower lid B1, and the seal portion 31 is formed when the upper lid B2 is fastened.

  The lower end of the seal ring 30 is cut at a position of 7.0 mm from the lower end surface 23 of the side peripheral wall 21 of the upper lid B2, the tightening margin of the seal part 31 is 0.1 mm, and the vertical length of the seal part 31 is 0.1 to 0.1 mm. 0.3 mm.

A leak test was performed in the same manner as in the first example, and compared with the current product.
In the test, the lower lid B1 was attached to a test stand, the upper lid B2 was tightened at 100 Ncm, and the cap B upper lid B2 was pressed while rotating in the direction of opening, and the air leak occurrence angle was examined.
As test products, the lower end position of the sealing ring 30 is 7.0 mm (prototype A) from the lower end surface 23 of the side peripheral wall (prototype A), and the same 6.5 mm (prototype B) as in the embodiment. Prepared, compared with the current product, measured.
The results are as shown in Table 2.

As can be seen from the above measurement results, air leakage occurred at an average rotation angle of 29.5 degrees in the current product, whereas in the case of the embodiment of the present invention (prototype A), it was only 5.8 degrees. In comparison with the current product, air leakage occurred at an average rotation angle of 23.7 degrees less.
Also, in the case of Prototype B in which the lower end of the sealing ring 30 is lowered by 0.5 mm and the seal portion 31 is lengthened, the air leakage angle only changes by 0.4 degrees. The angle was as small as 23.3 degrees.
Therefore, this embodiment can also obtain the same effects as the first embodiment.

In the present invention, when the cap is opened, when unscrewing is performed, if the internal pressure is high, first, gas leakage starts and the internal pressure can be reduced, so that a container for fermentable contents, etc. Can be widely used as.
Further, when the liquid ring is impermeable between the sealing ring and the dispensing cylinder, the generated gas is always released.

  The present invention can be used not only as a fermentable food product but also as a mixing container for drugs and the like.

It is a partial cross-section elevation view of the container and cap of the first embodiment of the present invention. It is an assembly drawing of a container and a cap, (a) is a partially sectional elevational view, (b) is an enlarged view of the main part of the cap with an upper lid attached. In the assembly drawing of the container and cap of 2nd Example, (a) is a partial cross section elevation view, (b) is the principal part enlarged view of the cap which attached the upper cover.

Explanation of symbols

A Bottle B Cap B1 Lower lid B2 Upper lid d Fastening allowance s Vertical length 1 Mouth tube portion 5 Fitting cylinder 6 Upper wall 7 Fitting cylinder 10 Protruding ring 11 Mounting cylinder 12, 26 Screw 13 Mounting plate 14 Extraction cylinder 15 Outlet lip 16 Bulkhead 20 Top wall 21 Side peripheral wall 25, 30 Sealing ring
27 Screwed tube
28 Clearance 29, 31 Seal part

Claims (2)

A lower lid provided with a substantially straight cylindrical extraction cylinder fitted with a container mouth cylinder and provided with an outlet lip that expands upward at the upper end; and a sealing ring that seals the inner periphery of the extraction cylinder In the cap of the liquid dispensing container comprising the upper lid screwed to the lower lid,
The outer circumference of the lower part of the sealing ring is reduced, and the upper part of the reduced diameter part is fitted to the lower part of the spout lip when fastened to the lower lid of the upper lid, and the vertical length is 0.1 to 0.3 mm. A cap for a liquid discharge container, characterized in that a seal portion having a horizontal interference margin of 0.1 mm is formed. A lower lid provided with a substantially straight cylindrical extraction cylinder fitted with a container mouth cylinder and provided with an outlet lip that expands upward at the upper end; and a sealing ring that seals the inner periphery of the extraction cylinder In the cap of the liquid dispensing container comprising the upper lid screwed to the lower lid,
When the lower end of the sealing ring is fastened to the lower lid of the upper lid, it fits into the lower part of the spout lip and has a vertical length of 0.1 to 0.3 mm and a horizontal fastening margin of 0.1 mm A cap for a liquid dispensing container characterized in that a part is formed.

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