JP5477700B2 - Dispensing container - Google Patents

Description

  The present invention relates to a blow molded casing made of a synthetic resin comprising an outer layer that forms an outer shell and an inner layer that is detachably laminated on the outer layer and forms an inner bag body that can be deformed by deformation. The present invention relates to a dispensing container that is configured by assembling a dispensing cap having a check valve function disposed in a part thereof.

Patent Document 1 describes a squeeze-type dispensing container in which a dispensing cap is disposed on the mouth tube portion of a delami bottle.
FIGS. 5 and 6 show an example of this type of dispensing container. FIG. 5 (a) is a half vertical side view, FIG. 5 (b) is a perspective view near the bottom, and FIG. FIG. 5 is a plan sectional view taken along line C, in which a dispensing cap 31 having a check valve is disposed in the mouth tube portion 102 of the casing 101 (Delami bottle).
The casing 101 has a mouth tube portion 102, a shoulder portion 103, a trunk portion 104, and a bottom portion 105, and an outer layer 111 that forms an outer shell, and an outer bag 111 that can be peeled and laminated on the outer layer so as to be deformable. It is comprised from the inner layer 112 which forms 112a.
Moreover, the trunk | drum 104 is cylindrical as seen in FIG.

  This dispensing container is used for dispensing a relatively high-viscosity content liquid such as creamy cosmetics. When the container body is pressed by hand in a squeeze shape, External air is introduced between the outer layer 111 and the inner layer 112, and the inner layer 112 retains its deformed shape while the outer layer 111 is restored to its original shape by its restoring force. Almost the entire amount can be used up, and the effect of the check valve can be combined to prevent the air from entering the inner bag body 112a from the outside, thereby suppressing the deterioration of the content liquid.

FIG. 6 illustrates the state of the inner layer 112 withering and deforming during use. In this way, the inner layer 112 is partially deformed with reversal deformation in part, the inner layer 112 positioned oppositely is partially joined together, and the flow path of the content liquid L is secured in the other part. .
Then, at the stage where the content liquid is almost used up, the inner layer 112 is further deflated, and in most part, the inner layer 112 is in close contact and the flow path is closed.
Here, in this type of delami bottle, the inner layer 112 is controlled to be deflated and deformed as described above so that the flow passage of the content liquid is secured to the end so that the pouring operation can be achieved smoothly. Is one of the important technical elements.

JP 2003-72864 A

  The inventors of the present application are able to prevent the deterioration of the quality of the content liquid by preventing the intrusion of air from the outside into the inner bag body by the dispensing container in which the dispensing cap is combined with the delami bottle as described above. Utilizing the fact that it can be used, this type of dispensing container is being used and expanded for applications that require a freshness such as a content mainly composed of a relatively low viscosity liquid, particularly food seasonings. .

  When the viscosity of the content liquid is relatively low, unlike the case of content liquids with relatively high viscosity, such as cream, the dispensing container is not tilted, and the pouring container is tilted from its upright position or inverted position. Thus, it can be used in a new mode which is not a conventional container of this type, such that the liquid is poured out by its own weight and by natural fall.

  On the other hand, in the new usage mode as described above, in order to smoothly dispense the content liquid and use the content liquid almost to the end, the external force such as squeeze is used along with the content liquid. Therefore, it is necessary that the inner layer withering deformation as shown in FIG. 6 progresses smoothly and smoothly from the bottom to the shoulder through the trunk.

  However, when the conventional casing 101 (Delami bottle) as shown in FIGS. 5 and 6 is used in the new mode as it is, the progress of the deflation of the inner layer 112 in the vicinity of the bottom 105 is smoothly and sufficiently progressed. However, in the vicinity of the lower end portion of the body portion 104, there is a problem that the inner layer 112 is warped and deformed first, the flow path is blocked, and the liquid content remains without being used up.

Accordingly, the present invention provides a delamination bottle which is a blow molded housing made of synthetic resin, and has a housing shape that allows the inner layer to be deformed smoothly and sufficiently without the external force due to the external force due to the content liquid being poured out. It is a technology to provide a pouring container body assembled with a pouring cap having a check valve mechanism capable of suitably pouring a content liquid having a relatively low viscosity into the housing and being disposed at a low cost. It is a subject.

Among the means for solving the above technical problems, the main configuration of the present invention is as follows.
The mouth of the casing formed by a blow molding method in which two types of synthetic resin materials are coextruded with an outer layer forming an outer shell and an inner layer made of an inner bag body that can be peeled and laminated on the outer layer. In a dispensing container constructed by assembling a dispensing cap on the cylinder part,
The bottle has a mouth tube portion which is erected set through a shoulder from the upper end of the tubular body portion, at a predetermined position of the outer layer, and the air intake holes you introduce external air between the layers of the outer layer and the inner layer, The bottom part of the inner layer is sandwiched between the outer layer from the front and rear direction and a bottom seal part is partially sealed, and the shape from the body part to the bottom part is a flat cylindrical shape whose flat cross section is flattened in the front and rear direction, and the shape of the bottom part , And swelled in the shape of a spherical arc shell flattened in the front-rear direction, downward,
The pouring cap has a check valve function that prevents outside air from entering the inner bag body into the discharge port formed in the cap body of the top tube that is assembled and fixed to the mouth tube portion of the housing. It is configured to arrange the members,
The pouring path member has a synthetic resin film in a bag-bound shape with one end open, and is stacked up and down, and a communication hole is formed in the film piece to be stacked on the lower side and communicates between layers serving as flow paths. Shall be
The discharge hole of the cap body and the communication hole of the extraction channel member are communicated, and the content liquid can be discharged from the open end through the communication hole through the communication hole. The upper and lower film pieces are in close contact and the interlayer is sealed, and the check valve function is demonstrated.
It is said.
In the above configuration, the direction in which the flat cross-sectional shape is flattened is defined as the front-rear direction for convenience in order to define the direction of the housing.

According to another configuration of the present invention, in the main configuration described above, a low- viscosity content liquid is stored, and the content liquid is poured out by its own weight in an inclined posture or an inverted posture.

The pouring container of the present invention is composed of a synthetic resin blow-molded casing used as a container body of the pouring container in a delami bottle and a pouring cap. The cap will be described.
First, the main structure of the present invention will be described.
The present inventors examined the behavior of the inner layer 112 at the bottom 105 of the conventional casing 101 shown in FIGS. 5 and 6, and the bottom 105 is a simple cylindrical body 104. In contrast, as shown in FIG. 5B, it is formed in a bottomed cylindrical shape from the side peripheral wall 105p and the bottom wall 105b, that is, it is relatively thick because of a blow molded product, The bottom wall 105b formed substantially vertically becomes an obstacle, and the reversal deformation of the inner layer 112 does not progress smoothly during the wilting deformation, which is the main factor that the wilting deformation does not proceed smoothly and sufficiently at the bottom 105. Based on the results of this study, the inventors have created the above configuration.

When the casing (Delami bottle) with the above configuration is used as the container body of a dispensing container combined with a dispensing cap with a check valve,
First, the shape from the torso to the bottom is roughly a flat cylindrical shape with a flat cross-sectional shape flattened in the front-rear direction, so that the inner layer withering deformation is further flattened in the front-rear direction of the housing. Can be controlled.
In other words, when viewed in terms of a flat cross-sectional shape, the inner layer initially formed in an elliptical shape, an oval shape, etc. is further flattened while being inverted and deformed in the front-rear direction as the content liquid is poured, and finally in the front-rear direction It is in a state of being stacked twice in the direction.

In addition, by making the shape of the bottom portion bulged into a spherical arc shell flattened in the front-rear direction facing downward,
Conventionally, the shape of the bottom that has been configured from the side wall and the bottom wall as described above, so-called so-called distinction between the side wall and the bottom wall is eliminated, and from the boundary with the body part to the bottom end of the bottom (the center of the bottom) Until then, the cross-sectional shape can be a shape that gradually and smoothly changes to a reduced diameter,
By adopting such a shape, in combination with the above-described effect of the flattened cylindrical shape flattened in the front-rear direction, the inversion deformation of the inner layer progresses smoothly in the inner layer withering deformation near the bottom. As the contents liquid is poured out, the inner layer's wrinkle deformation can be made to proceed smoothly and smoothly from the lower end of the bottom part to the shoulder part and then to the shoulder part. As the process proceeds smoothly, almost all of the content liquid can be used up.
In the above configuration of the present invention, the shape called “spherical arc shell” includes an elliptical arc shell shape, an elliptical arc shell shape, and the like. The bulging curved surface shape can be selected.

Next, the dispensing cap having the above main configuration will be described.
The pouring cap having the above-described configuration has a check valve function for preventing outside air from entering the inner bag body at the discharge port formed in the cap-shaped tubular cap body assembled and fixed to the mouth tube portion of the housing. The pouring path member is arranged, and when the pouring of the desired amount of the content liquid is finished, the outside air tries to enter into the deformed inner layer and is arranged in the pouring path member. The check valve function can prevent the intrusion of the outside air and reliably prevent the deterioration of the quality due to the oxidation of the content liquid by the outside air.

  The pouring path member has a synthetic resin film in a bag-bound shape with one end open, and is stacked up and down, and a communication hole is formed in the film piece to be stacked on the lower side and communicates between layers serving as flow paths. The discharge path member is disposed at the discharge port so that the discharge hole of the cap body and the communication hole of the discharge path member communicate with each other.

  Then, when the pouring container is in an inclined posture or an inverted posture, the content liquid intrudes into the interlayer of the film to be laminated from the discharge hole of the pouring cap through the communication hole of the pouring path member by its own weight, and pushes the interlayer. Thus, the content liquid can be poured out from the open end to the outside, and the inner layer is deflated and deformed as the content liquid is poured out.

  In addition, if the dispensing container is returned to the upright posture after dispensing the desired amount of the content liquid, the pressure from the content liquid disappears, and the layers of the film laminated on the dispensing path member return to a flat shape, and further between the layers. The upper and lower film pieces are brought into close contact with each other due to the surface tension of the remaining content liquid. As a result, the interlayer is sealed, the check valve function is exhibited, and the intrusion of outside air can be prevented. The occurrence of quality degradation can be reliably prevented.

  Still another configuration of the present invention is a configuration in which the pour-out path member is formed into a bag binding shape by bonding and fixing the peripheral portions of two film pieces with an adhesive, and one end is cut off at the start of use to form an open end. It is said to be.

With the above configuration, the upper and lower film pieces can be easily stacked in close contact with each other by bonding and fixing the peripheral portions of the two film pieces with an adhesive to form a bag binding shape, and the check valve function is more Definitely demonstrated.
Moreover, before the open end is formed, the intrusion of outside air can be surely prevented, and the open end can be formed by simply cutting one end with a scissors or the like before the start of use.
Of course, in addition to the above-mentioned bonding method, the pouring path member is produced by bonding the peripheral portions of the two film pieces by heat welding or ultrasonic waves, and further folding the tube-like film into two layers. There is a method such as heat sealing one end.

  Still another configuration of the present invention is to fix the discharge channel member in communication with the discharge port by bonding and fixing the opening periphery of the communication hole of the discharge channel member to the opening peripheral portion of the discharge port formed in the cap body. It is said to be.

  With the above-described configuration, it is possible to reliably fix and dispose the dispensing channel member to the discharge port without using another member for fixing and assembling.

  Still another configuration of the present invention is that an exterior body is mounted on a housing and the housing is used as a refill container.

In the above configuration, the casing (delami bottle) of the present invention can smoothly and smoothly advance the inner layer withering deformation from the bottom part to the shoulder part to the shoulder part even if the outer layer is relatively thin. Using this casing as a refill container, it is possible to suppress the deterioration of the quality of the good content liquid, to have good pouring properties, and to further save resources. A dispensing container can be provided.

Since the dispensing container of the present invention has the above-described configuration, the following effects can be obtained.
In other words, the bottom shape is formed in a shape that bulges in the shape of a spherical arc shell flattened in the front-rear direction, so that the so-called so-called side wall and the bottom wall are eliminated, and the bottom shape is changed to the trunk. From the boundary to the lower end (the center of the bottom surface), the cross-sectional shape can be a shape that smoothly changes to a reduced diameter, and the operational effect by making a flat cylindrical shape flattened in the front-rear direction Together, the inner layer can be smoothly deformed by reversing the inner layer in the vicinity of the bottom, and the inner layer can be naturally deformed from the lower end of the bottom as the contents liquid is poured. It can be made to proceed smoothly toward the shoulder through the part, the content liquid can be dispensed smoothly, and almost all of the content liquid can be used up.

In addition, when the dispensing container is returned to the upright posture after dispensing the desired amount of the content liquid, the pressure from the content liquid disappears, and the interlayer of the film laminated on the pouring path member disposed in the pouring cap is flattened. The upper and lower film pieces are brought into close contact with each other due to the surface tension of the content liquid remaining between the layers, and as a result, the layers are sealed, the check valve function is exhibited, and the entry of outside air can be prevented. It is possible to reliably prevent the occurrence of quality deterioration due to oxidation of the liquid outside air,
It is a simple structure member in which films called pour-out members are laminated in a bag-like shape, and the check valve function can be easily arranged at low cost.

(A) is a front view which shows longitudinally an example of the housing used for the extraction container of this invention, (b) is a perspective view of the bottom vicinity. It is a vertical side view of the housing shown in FIG. (A) is the AA line in FIG. 1, (b) is a plane sectional view shown along a BB line. (A) is sectional drawing which shows the lamination | stacking state of the outer layer and inner layer in the bottom seal part in FIG. 1, (b) is sectional drawing which shows the bottom crack state of a bottom seal part. (A) is a semi-vertical side view showing a conventional example of a delami bottle, and (b) is a perspective view in the vicinity of the bottom. FIG. 6 is a plan sectional view taken along line CC in FIG. 5. It is a front view which shows longitudinally one Example of the extraction container of this invention. It is a side view of the container of FIG. It is a top view of the extraction cap of the container of FIG. It is sectional drawing which shows the extraction | pouring state of the container of FIG. It is a side view which shows the deformation | transformation state of the open end of the extraction channel member in the extraction state of FIG. (A) is schematic explanatory drawing of the preparation method of a delivery channel member, and the fixing method to a discharge cylinder, (b) is sectional drawing shown along the EE line in (a), (c) is FF line It is sectional drawing shown along. It is a perspective view which shows the state which adhered and fixed the extraction channel member to the discharge cylinder. It is a whole external appearance perspective view which shows an example of the usage condition of an extraction container. It is a half vertical side view of the outer case shown in FIG.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described along examples with reference to the drawings.
FIGS. 1 to 3 show an example of a casing that is a delamination bottle used in the dispensing container of the present invention. FIGS. 1 (a) and 1 (b) are a longitudinal front view and a perspective view near the bottom, FIG. FIG. 3A is a longitudinal sectional side view, FIG. 3A is a sectional view taken along line AA in FIG. 1, and FIG.
In FIGS. 2 and 3A, symbols F, B, L, and R that define the front-rear and left-right directions of the housing 1 for convenience are shown.

This casing 1 is made by co-extrusion of an outer layer 11 made of low-density polyethylene resin and forming an outer shell, and an inner layer 12 made of nylon resin and forming an inner bag body 12a. It has a tapered cylindrical shoulder 3, a flat cylindrical trunk 4 and a bottom 5. In this embodiment, the average thickness of the outer layer 11 in the body 4 is 280 microns, and the average thickness of the inner layer 12 is 100 microns.
Further, an intake hole 21 for introducing external air between the outer layer 11 and the inner layer 12 is formed in the outer layer 11 portion of the mouth tube portion 2.
In addition, a bottom seal portion 22 is formed on the bottom portion 5 during blow molding.

  Here, after blow molding, in many cases, the outer layer 11 and the inner layer 12 are in close contact with each other, but when used as a delami bottle, the mouth tube portion 2 is formed so that the wrinkle deformation of the inner layer 12 proceeds smoothly. It is preferable that the inner bag body 12a is sucked by vacuum and the inner layer 12 is peeled off from the outer layer 11 in substantially the entire region.

  Moreover, the shape from the trunk | drum 4 to the bottom part 5 is a flat cylinder shape, The flat cross-sectional shape is a substantially ellipse shape as shown in FIG. Moreover, in the area | region from the upper end position (boundary position with the shoulder part 3) of the trunk | drum 4 to the bottom part 5, it is set as the shape which carries out the diameter reduction of the long diameter and short diameter of a flat flat cross-sectional shape gently.

  As shown in the perspective view of FIG. 1 (b), the bottom 5 has a shape that bulges downward in the shape of a spherical arc shell flattened in the front-rear direction, from the longitudinal front view of FIG. 1 (a). As can be seen from the front side F, the lower end of the bottom portion 5 has a shape that gently bulges downward in a curved shape.

The feature of the shape of the bottom portion 5 is clear when compared with the bottom portion 105 of the conventional case 101 shown in FIG. 5B. The bottom portion 105 shown in FIG. Whereas the bottom 5 of the above-described embodiment is formed from a bottom wall 105b formed substantially perpendicular to the side peripheral wall 105p, the bottom 5 in the above embodiment is distinguished from the side peripheral wall 105p and the bottom wall 105b of the conventional casing 101. , And the shape of the bottom portion 5 is such that the cross-sectional shape smoothly changes to a reduced diameter from the boundary with the body portion 4 to the lower end (center portion of the bottom surface).

Next, FIGS. 7 to 12 show an embodiment of the dispensing container of the present invention. From the case 1 shown in FIGS. 1 to 3 and the dispensing cap 31 having a check valve function. Composed.
7 is a longitudinal front view, FIG. 8 is a side view, FIG. 9 is a plan view of the pouring cap, FIG. 10 is a sectional view showing the pouring state, and FIG. 11 is the pouring path member 41 in the pouring state. It is a side view which shows the deformation | transformation state of an open end.

  The pouring cap has a cap-shaped tubular cap body 32 that is screwed into the mouth tube portion 2 of the housing 1, and is assembled and fixed in a tightly fitting manner at the opening of the top wall of the cap body. A cylindrical discharge cylinder 34 to be formed, a top plate member 35 covering the upper part of the cap body 32, and a discharge channel member 41 fixed and arranged on the upper end surface of the discharge cylinder 34 by an adhesive layer as will be described later. It is comprised from the member of.

  FIGS. 12 and 13 are for explaining the details, the manufacturing method, or the fixing method to the discharge cylinder 34 of the extraction channel member 41, and FIG. 12 (a) shows the preparation method of the extraction channel member and the fixation to the discharge cylinder. (B) is a sectional view taken along line EE in (a), (c) is a sectional view taken along line FF, and FIG. It is a perspective view which shows the state which adhered and fixed the pouring path member 41. FIG.

The pouring path member 41 has a basic configuration in which two oval-shaped synthetic resin film pieces 41t and 41b are bonded and fixed with an adhesive layer 43 at the periphery thereof to form a bag binding shape. It is said to be laminated. The lower film piece 41b is formed with a circular connection hole 45 communicating between the upper and lower film pieces 41t and 41b. Further it is to form an adhesive layer 43 to the opening edge of the coupling hole 45 in the lower surface of the lower side of the film pieces 41b.

  The pouring path member 41 is fixed to the discharge cylinder 34 by the adhesive layer 43 on the lower surface of the lower film piece 41b, and the state shown in FIG. 13 is obtained. And in this state, the interlayer of the film piece laminated | stacked with the discharge cylinder 34 connects via the connection hole 45. As shown in FIG.

Then, as shown in FIG. 7, the lower end portion of the discharge cylinder 34 is assembled and fixed to the cap body 32 in a fitting manner.
7 shows a state in which the tip end portion of the dispensing channel member 41 is cut to form the open end 44. Up to that time, the upper and lower film pieces 41t and 41b are bonded and fixed over the entire circumference. Therefore, it is possible to reliably prevent the intrusion of outside air and store it with peace of mind.

Next, the usage pattern of the present embodiment will be described.
7 and 8 show a state in which the dispensing container is held in an upright posture, and as shown in FIG. 7, the upper and lower film pieces 41t and 41b are separated by the surface tension of the content liquid remaining between the layers. As a result, the interlayer is sealed, the check valve function is exhibited, the intrusion of outside air can be prevented, and the occurrence of quality deterioration due to the oxidation of the contents liquid by the outside air can be reliably prevented.

10 and 11 show a state in which the content liquid is poured out by its own weight by tilting the pouring container. In this tilted position, the content liquid flows from the discharge port 34a of the discharge tube 34 through the connecting hole 45 of the discharge channel member 41 while expanding and spreading between the layers of the film pieces, as indicated by the arrows in the figure. 1-3 can be smoothly poured out from the end 44 in combination with the effects of the casing 1 shown in FIGS. As the content liquid is poured out, the inner layer 12 of the casing 1 is deflated and deformed as described above.

  Further, when the dispensing container is returned to the upright posture after dispensing the desired amount of the content liquid, the pressure due to the content liquid disappears, and the layers between the upper and lower film pieces 41t and 41b on which the dispensing path member 41 is laminated are flat The state returns to the state shown in FIGS.

Next, after filling the inner bag body 12a of the casing 1 of the dispensing container of the present example with water, the dispensing container was held in an inverted posture, and the dispensing test of water as the content liquid was performed. .
As a result, in the case 1 of the present embodiment, the reverse deformation of the inner layer 12 can be smoothly advanced in the deflation deformation of the inner layer 12 in the vicinity of the bottom 5, and the deflation deformation of the inner layer 12 is accompanied with the pouring of water. Without any external force, and naturally, in order from the lower end of the bottom portion 5 to the shoulder portion 3 through the trunk portion 4, in a deformed manner as shown by a two-dot chain line in FIG. The content liquid was smoothly dispensed, and almost all of the content liquid could be dispensed except for a portion remaining in the vicinity of the mouth tube portion 2.

Good extraction results in the above test are:
Making the shape from the body part 4 to the bottom part 5 into a flat cylindrical shape,
In the region from the upper end position of the body portion 4 to the bottom portion 5, the long diameter and the short diameter of the flat cross-sectional shape of this flat tube are formed into a shape that gradually reduces the diameter,
And, combined with the action and effect of making the shape of the bottom portion 5 bulged into a spherical arc shell flattened in the front-rear direction facing downward, it was realized,
In particular, by making the shape of the bottom portion 5 bulge into a spherical arc shell that is flattened in the front-rear direction downward, it accompanies withering deformation of the inner layer 12 in the vicinity of the bottom portion 5 at the initial stage of pouring. The reversal deformation could progress smoothly.

  Next, FIG. 14 shows that the casing 1 portion of the dispensing container of the above embodiment is housed in an outer case 53 having sufficient rigidity so that the dispensing container can be placed in an upright posture. The outer case 53 includes a lower case body 54 that holds the body 4 and the bottom 5 of the housing 1, and a shoulder 3 of the housing 1. And an upper case body 59 for covering.

  The lower case body 54 (see FIG. 15) is configured by connecting a bottom plate 57 that supports the bottom portion 5 of the housing 1 in a lower end portion of a cylindrical barrel 55 that forms a leg portion at the lower end. A window hole 56 is formed in a part of the upper end portion, and a locking pressing piece 58 projects from the front and rear portions of the upper end portion.

  The upper case body 59 is configured by a tapered cylindrical shoulder tube 60 that covers the shoulder portion 3 of the housing 1, and a locking pressing piece 58 of the lower case body 54 is formed from below at the lower ends of the front and rear portions of the shoulder tube 60. A locking hole piece 61 having a locking hole for getting over and locking is suspended.

  The window hole 56 is used when the content liquid is forcibly poured out by pressing the body portion 4 of the housing 1, not by the natural flow due to the weight of the content liquid. While pressing the body part 4 exposed in the hole 56, the content liquid can be rapidly poured out with the pouring path member 41 in the released state.

  The housing 1 housed in the outer case 53 exposes the upper half of the shoulder 3, but the upper half of the shoulder 3 is deflated because the housing 1 is a blow molded product. Since it is a portion that is difficult to deform, and eventually the content liquid L is likely to remain in performing repeated dispensing operations, an indication is given to the upper half portion of the exposed shoulder 3, The content liquid remaining in the upper half of the shoulder portion 3 is forcibly poured out so as to eliminate waste of the content liquid.

  When the content liquid is used up, the locking pressing piece 58 is pressed to release the locking hole piece 61, the upper case body 59 is separated from the lower case body 54, and the outer case 53 is released. The extraction container is extracted, the extraction cap 31 is separated and reused, and the housing 1 is discarded. That is, the housing 1 is handled as a refill container.

As mentioned above, although the extraction container of this invention and its effect were demonstrated along the Example, embodiment of this invention is not limited to the said Example.
In the casing, as for the combination of the outer layer and the inner layer, in addition to the combination of polyethylene / nylon, various combinations can be adopted in consideration of the peelability of both layers.

In addition, the casing of the present example is assumed to be used as a refill container, and the thickness of the outer layer in the body portion is relatively thin, about 280 microns. However, the casing is thick in consideration of the purpose of use and formability. Or it can be made thinner.
In addition, the bulging shape of the bottom is in the category of bulging into a spherical arc shell flattened in the front-rear direction toward the lower side. In consideration of formability, the selection can be made as appropriate while changing the degree of curvature of the spherical arc-shaped curved surface.

Moreover, although the example which forms the inlet hole 21 in the port cylinder part 2 was shown in the present Example, the inlet hole 21 can also be formed using the bottom seal part 22 formed in the bottom face of a bottom part at the time of blow molding. . 4A is a cross-sectional view showing a laminated state of the outer layer 11 and the inner layer 12 in the bottom seal portion 22 surrounded by a small circle in FIG.
The outer layer 11 is peeled off from the inner layer 12 by applying a pressing force to the bottom seal portion 22 from the outside, so that a so-called bottom cracking state can be formed and a gap can be formed. can do.
Here, the opening position of the intake hole 21 can be selected as appropriate, and may be the mouth tube portion 2 as in the embodiment or the bottom surface of the bottom portion 5 as described above. Furthermore, you may open in both the mouth tube part 2 and the bottom part 5 bottom face.

The shape of the or pouring outlet member, may be also a fixation to even the discharge tube is not limited to embodiments for the arrangement, using the fitting concave member, mechanically detachably secured For example, it is also possible to form the extraction channel member using a film formed in a tube shape.

As described above, the dispensing container of the present invention is configured so that the inner layer withering deformation in the vicinity of the bottom of the housing can proceed smoothly and sufficiently without external force accompanying the dispensing of the content liquid. In addition, the check valve function can be easily achieved at low cost with a pouring path member laminated with a film. A wide range of usage can be expected as a container.

DESCRIPTION OF SYMBOLS 1,101; Housing 2,102: Mouth tube part 3,103; Shoulder part 4,104; Trunk part 5,105; Bottom part 11,111; Outer layer 12,112; Inner layer 12a, 112a; Hole 22; seal portion 31; pour cap 32; cap body 33; mounting cylinder piece 34; discharge cylinder 34a; discharge port 35; top plate member 41; pour channel member 41t; (upper) film piece 41b; Film piece 43; film piece 43; adhesive layer 44; open end 45; connecting hole 53; outer case 54; lower case body 55; barrel 56; window hole 57; bottom plate 58; Case 60; shoulder tube 61; locking hole piece L; content liquid

Claims (5)

An outer layer (11) forming an outer shell, and an inner layer (12) consisting of an inner bag body (12a) that is peelably laminated on the outer layer (11) and can be deformed, are made of two types of synthetic resin materials. A pouring container constructed by assembling a pouring cap (31) to the mouth tube portion (2) of the casing (1) formed by the co-extruded blow molding method ,
The bottle body (1) has a shoulder portion from the upper end of the tubular body portion (3) and erected set via the (4) the mouth tube section (2), to a predetermined position before Kigaiso (11), outer layer (11) and the inner layer (12) layers to the intake hole you introduce outside air (21), portions sandwiches the lower end of the longitudinal direction in the outer layer (11) to seal said inner layer (12) A bottom seal portion (22), and the shape from the trunk portion (4) to the bottom portion (5) is a flat cylindrical shape whose flat cross-sectional shape is flattened in the front-rear direction, and the shape of the bottom portion (5) is Suppose that it has a shape that bulges in the shape of a spherical arc flattened in the front-rear direction toward the bottom,
The pouring cap (31) is configured such that the outside air flows into the discharge port (34a) formed in the top cylindrical cap body (32) that is assembled and fixed to the mouth tube portion (2) of the housing (1). It is configured to arrange a pour-out path member (41) having a check valve function for preventing entry into the inner bag body (12a) ,
The pouring channel member (41) is a synthetic resin film, with one end being an open end (44) and laminating it vertically in a bag-bound form, and the film piece (42) laminated on the lower side is provided with a flow path. A communication hole (45) communicating between the layers is formed,
The discharge hole (34a ) of the cap body (32) communicates with the communication hole (45) of the discharge channel member (41) , and the liquid content is poured from the open end (44) through the communication hole (45) and through the layers. The upper and lower film pieces (41t, 41b) are in close contact with each other by the surface tension of the liquid remaining between the layers after pouring, and the check valve function is demonstrated. A pour container characterized by. The dispensing container according to claim 1, wherein the dispensing liquid is configured to contain a low- viscosity content liquid and to pour the content liquid by its own weight in an inclined posture or an inverted posture. The pouring path member (41) has a configuration in which a peripheral edge portion of two film pieces (42) is bonded and fixed with an adhesive to form a bag binding shape, and one end is cut off at the start of use to form an open end (44) The dispensing container according to claim 1 or 2. Note By adhesively secured to the opening edge of the discharge port (34a) of the opening peripheral edge is formed on the cap body (32) of the communicating hole (45) of Detchi member (41), said pouring outlet member (41) ejection The pouring container according to claim 1, 2, or 3, wherein the outlet (34a) is fixed in a continuous manner. The exterior body is attached to the bottle (1),該壜body (1) is used as a refill container according to claim 1, 2, 3 or 4 synthetic resin blow molded bottle body according.

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