JP4232174B2 - Isobaric maintenance / leakage prevention mechanism between inner and outer layers in Delami bottle containers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an isobaric maintenance / leakage prevention mechanism between inner and outer layers in a so-called Delami bottle container.
[0002]
[Prior art]
The synthetic resin blow-molded housing is constructed by peeling the inner layer that forms a deformable inner bag into the outer layer that forms a fixed outer shell, and the intrusion of outside air stored in the inner layer An inner solution is formed by a check valve that can dispense the inner solution disposed at the spout and prevents the outside air from entering because the inner solution that dislikes contact is poured out and the anaerobic solution is concerned. When the inner bag is deformed in a reduced volume without returning, the negative pressure generated between the outer layers and the return of the outer layer is normally reduced through the vent hole formed in the base of the neck of the outer layer. Immediate pressure equalization by injection, and when the inner bag volume decreases due to the inner solution extrusion operation again, the inner solution is pushed out in a state that prevents leakage of air existing between the inner and outer layers. The so-called Delami bottle container made possible is, for example, cosmetics, ketchup It has been widely used in the food.
[0003]
The above-described isobaric maintenance / leakage prevention mechanism usually does not stand out the intake hole provided with a check valve that allows outside air to flow in but does not allow leakage to the upper part of the cap forming member constituting the spout. This is achieved by arranging with a mode and communicating the intake port and the vent hole through a passage without leakage.
[0004]
Therefore, the cap forming member having the role of covering the ventilation holes must not only make the visual recognition from the outside impossible but also be able to seal and partition the space before the ventilation holes. Furthermore, there is a demand for highly accurate passage molding without leakage.
[0005]
Said vent is shown in FIG.
[0006]
That is, in the figure, reference numeral 1 denotes a bag body of a delami bottle container, which is composed of an inner layer 1a and an outer layer 1b that are blow-molded, and a vent hole 3 is drilled in the neck base 2 of the outer layer 1b.
[0007]
[Problems to be solved by the invention]
As described above, since the space in front of the vent hole 3 of the cap forming member (not shown) must be tightly sealed, a high molding accuracy is required for the cap forming member (not shown).
[0008]
Further, the neck 4 of the inner layer 1a is less stretched than the body 5 and has a large thickness and rigidity. Therefore, when the outer layer 1b is returned after the inner solution is extruded, the neck 4 returns to the mode of covering the vent hole 3. Therefore, there is an inconvenience that the inflow of air into the trunk 5 is important.
[0009]
The present invention has been made in view of such circumstances, and its purpose is to eliminate high molding accuracy requirements imposed on the above-mentioned cap forming member, ease of perforation, and other than isobaric air at the time of use. At the same time, ensuring the reliable inflow of air into the trunk 5 in the vent hole 3 provided in the neck base 2 of the outer layer 1b because there is no fear of intrusion of water, etc. It is an object of the present invention to provide an isobaric maintenance / leakage prevention mechanism between the inner and outer layers of the Delami bottle container.
[0010]
There have been no proposals for improvement of the isobaric maintenance / leakage prevention mechanism including elimination of the burden of molding accuracy of the cap forming member on the premise of the vent hole 3 which is very convenient for drilling.
[0011]
[Means for Solving the Problems]
Of the present invention for solving the above technical problem, the means according to claim 1 comprises:
The neck 2 of the outer layer 1b is provided with a check valve that allows the outside air to flow in but does not allow the leakage of air, and the neck 4 of the inner layer 1a is pushed back a predetermined amount with the protrusion of the open leg. The air valve set is supposed to be provided with a passage continuing to the body portion 5.
[0012]
In the above-described configuration, the air inflow path to the body portion 5 is always ensured, and a check valve that allows outside air but does not allow leakage is provided in the vent hole 3. This eliminates the need for the front space of the vent hole 3 to be a separate seal space, and all the strict molding accuracy requirements that have been imposed are eliminated.
[0013]
According to a second aspect of the present invention, there is provided a non-return valve having a large tip at the center of the valve seat, which allows inflow of outside air but does not allow leakage of air in the air valve set 7 according to the first aspect of the invention. A valve having a vertically-arranged pole formed with a ventilation slit groove is engaged with a lower half narrow diameter portion of the valve mounting through-hole of the set frame so as to be able to reciprocate a predetermined amount.
[0014]
The above-described configuration of the second aspect can be expected to enable smooth valve operation of the pole slide.
[0015]
According to a third aspect of the present invention, there is provided a check valve which allows inflow of outside air but does not allow leakage of air in the air valve set according to the first aspect of the invention. And a through-hole with a cantilevered tube with a cantilevered tongue that closes the small-diameter hole at the top end. It is a thing.
[0016]
The said structure of Claim 3 can expect the sensitive valve action by a tongue piece.
[0017]
According to a fourth aspect of the present invention, there is provided the check valve of the air valve set according to the first aspect of the present invention, the valve mounting through hole of the set frame, the small diameter hole at the center of the canopy, and the large diameter hole at the bottom of the canopy. The valve seat protrudes from the lower diameter valve seat of the small diameter hole to the inner peripheral wall of the large diameter hole with a gap and is mounted with a film valve on the valve receiver. is there.
[0018]
The above-described configuration according to the fourth aspect of the present invention can be further agile by a lightweight valve (intake is made by bending the peripheral edge of the film valve on the valve receiver).
[0019]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
1a and 1b show the invention of claim 1. FIG.
[0020]
That is, as shown in FIG. 1a, an air valve set 7 is provided that includes a check valve 6 that allows the outside air to flow in but does not allow the air to leak, and pushes the neck 4 of the inner layer 1a by a protruding leg 7a,. Is provided in the vent hole 3 to ensure a passage 8 that is always connected to the body portion 5.
[0021]
Accordingly, since the check valve 6 that allows inflow of outside air but does not allow leakage is arranged directly in the vent hole 3, there is no need to seal the space in front of the separate vent hole 3, and there is no seal. As shown in FIG. B, the skirt portion 9a of the cap forming member 9 (the illustrated example is a single member) does not need to be in close contact with the heel body 1 with high precision molding, and as a result, as in the past. There is no need to mold a leak-free passage with high precision molding.
[0022]
In the figure, reference numeral 10 denotes a check valve attached to the spout 11 formed in the cap forming member 9 and capable of pouring the internal solution and preventing the outside air from entering.
[0023]
2, 3 and 4 show the invention of claim 2.
As shown in FIGS. 2 and 3, the check valve 6 that allows the outside air to flow in but does not allow the air leakage is vertically engraved with a large diameter tip at the center and a vent slit groove 13 at the periphery. A valve 15 standing upright with a built-in pole 14 is fitted into a lower half narrow-diameter portion 18 of a through-hole 17 for valve mounting of a set frame 16 so as to be able to reciprocate a predetermined amount.
[0024]
The valve is opened and closed by the reciprocating mouth movement of the pole 14.
[0025]
5, 6 and 7 show the invention of claim 3.
[0026]
As shown in FIGS. 5 and 6, the check valve 6 that allows the outside air to flow in but does not allow the air leakage, has a through-hole 20 for mounting the valve of the set frame 19 and a small-diameter hole 22 in the center of the canopy 21. A large-diameter hole 23 at the bottom of the canopy, and a through-hole 20 fitted with a covered cylinder 25 having a cantilever tongue 24 for closing the small-diameter hole 22 at the top. did.
[0027]
The valve is operated by opening and closing the cantilever tongue 24.
[0028]
8, 9 and 10 show the invention as claimed in claim 4.
As shown in FIGS. 8 and 9, the check valve 6 that allows inflow of outside air but does not allow leakage of air can pass through the valve mounting through hole 27 of the set frame 26 and the small diameter hole 29 in the center of the canopy 28. 30 has a large-diameter hole 31 at the bottom, and a valve seat 32 is provided on the inner peripheral wall of the large-diameter hole 31 slightly below the lower-diameter valve seat 31 of the small-diameter hole 29 so as to be spaced from the valve seat 32. A film valve 33 is mounted on 32.
[0029]
Air is sucked from the gap formed by the bending of the peripheral edge of the film valve 33.
[0030]
【The invention's effect】
As described above, according to the present invention, in the so-called Delami bottle container, the inconvenience caused in the vent hole drilled in the convenient neck of the mouth is solved with the elimination of the molding accuracy imposed on the cap forming member. And has a very significant contribution to the promotion of the container.
[Brief description of the drawings]
FIGS. 1A and 1B are explanatory views of a cap-forming member not mounted and mounted according to a first embodiment of the present invention. FIG.
FIG. 2 is an explanatory view of a set room of an air valve set according to claim 2 of the present invention.
FIGS. 3A and 3B are front and bottom views of the valve member. FIG.
FIG. 4 is an enlarged view of an embodiment.
FIG. 5 is a front and bottom explanatory view of a set frame of an air valve set according to a third aspect of the present invention.
FIG. 6 is a front view of the valve member.
FIG. 7 is an enlarged view of an embodiment.
FIG. 8 is a front and bottom explanatory view of a set frame of an air valve set according to a fourth aspect of the present invention.
FIG. 9 is also an explanatory view of a valve member.
FIG. 10 is an enlarged view of an embodiment.
FIG. 11 is an explanatory diagram of a vent hole of a so-called Delami bottle container.
[Explanation of symbols]
1; 壜 body 1a; inner layer 1b; outer layer 2; neck 3; vent 4; neck 5; trunk 6; check valve 7; air valve set 7a; open leg 8; Valve 11; Outlet 12; Valve seat 13; Ventilation slit groove 14; Pole 15; Valve 16; Set frame 17; Through hole 18; Lower semi-thin diameter part 19; Set frame 20; Through hole 21; Canopy 22; Hole 23; Large diameter portion 24; Tongue piece 25; Covered cylinder 26; Set frame 27; Through hole 28; Canopy 29; Small diameter hole 30; Large diameter hole 31; Lower end valve seat 32; Valve seat 33;

Claims (4)

The outer layer 1b has a check valve 6 that allows the outside air to flow in, but does not allow the leakage of air, and the neck 4 of the inner layer 1a is pushed back by a protruding leg 7a for a predetermined amount. A mechanism for maintaining air pressure and preventing air leakage between the inner and outer layers of the Delami bottle container, which is equipped with an air valve set 7 that always secures the passage 8 connected to the body portion 5. A check valve 6 that allows the inflow of outside air into the air valve set 7 but does not allow air leakage is provided. A pole 14 is vertically provided in the center of the valve seat 12 and has a large diameter tip and a ventilation slit groove 13 in the periphery. The delamination bottle container according to claim 1, wherein the valve 15 is configured to be engaged with the lower half narrow diameter portion 18 of the valve mounting through-hole 17 of the set frame 16 so as to be able to reciprocate by a predetermined amount. Isobaric maintenance / leakage prevention mechanism. The check valve 6 that allows inflow of outside air to the air valve set 7 but does not allow leakage, the valve mounting through hole 20 of the set frame 19, the small diameter hole 22 at the center of the canopy 21, and the large diameter hole at the bottom of the canopy 2, and a through-hole 20 is provided with a tentative cylinder 25 having a cantilevered tongue piece 24 that closes the small-diameter hole 22 at the top end. This is a mechanism for maintaining air pressure and preventing air leakage between the inner and outer layers of Delami bottle containers. A check valve 6 that allows inflow of outside air into the air valve set 7 but does not allow leakage, a valve mounting through hole 27 of the set frame 26, a small diameter hole 29 in the center of the canopy 28, and a large diameter at the bottom of the canopy 28. The small-diameter hole 29 is provided with a valve receiver 32 provided at intervals on the inner peripheral wall of the large-diameter hole 30 slightly below the lower-end valve seat 31 and a film valve on the valve receiver 32. The delamination bottle container according to claim 1, wherein an isobaric / air leakage prevention mechanism is provided between the inner and outer layers.

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