JP5793807B2 - Container with cap - Google Patents

Description

  The present invention relates to a delamination bottle type container body, which is a blow-molded product, in which an inner layer that forms a volume-reducing and deformable inner bag is detachably laminated within an outer layer that forms an outer shell, and a mouthpiece of the container body It is related with the container with a cap which is a combination thing with the cap body assembled | attached to the part.

  As a container for storing viscous contents such as shampoo and sauce so that it can be discharged, a container with a cap of Delami bottle type which is a synthetic resin bottle capable of volume reduction deformation and restoration deformation is known, This Delami bottle type container has a discharge valve that forms a discharge port for contents, and an intake valve that introduces outside air between the outer layer and the inner layer.

  Although the discharge valve forms a discharge port for the contents, the viscous contents are generally difficult to obtain a good “liquid breakage”, and are disclosed in Japanese Patent Application Laid-Open No. 2004-001780. As in the prior art, a configuration has been considered in which a slit valve made of a soft elastic material is used as a discharge valve so that a good “liquid break” can be obtained. Actually, in the above configuration using the slit valve as the discharge valve, even when the contents are viscous, a preferable “liquid draining” operation can be obtained. Demonstrate.

Japanese Patent Laid-Open No. 2004-001780

  However, in the above-described prior art, the thickness of the valve action portion of the discharge valve is increased so that the check valve can be provided with a sure check function as much as possible. The shape is required to be bullet-shaped, and it has been pointed out that the material cost is high and the degree of freedom of design is low, so this reduces the unit consumption of expensive soft elastic materials, and restrictions on the shape of the discharge valve There is a demand for eliminating the need to increase design freedom.

  Therefore, the present invention was devised to satisfy the above-described demands in the prior art, so that a discharge valve having a slit valve structure can exhibit a high check function while maintaining the thickness and shape of a normal slit valve. Therefore, it is an object of the present invention to reduce the unit consumption of an expensive soft elastic material and to obtain a large degree of design freedom.

The main configuration of the present invention for solving the above technical problem is:
Having a cap body that is blow-molded into a bottle shape and contains a viscous resin container body, and a cap body that closes and closes the mouth tube portion of the container body;
The container body is composed of an outer layer that is squeezable and has a flexibility that can be restored, and an inner layer that is detachably laminated with the outer layer and accommodates the contents and can be reduced and deformed freely.
A discharge valve is provided in the mouth tube portion of the container body to permit the discharge of the contents, but prevents the entry of outside air, and an intake hole is formed in a part of the outer layer. Provide an intake valve that allows outside air to enter but prevents the outside air from being discharged,
The discharge valve has a slit valve structure made of soft elastic material,
Close to the inside of the discharge valve, a suppression unit that applies a suppression force to the flow of contents located inside the discharge valve with respect to the reduced pressure acting on the discharge valve ,
It is in.

  Since the synthetic resin container body blow-molded into a bottle shape is configured as a Delami bottle shape having a discharge valve and an intake valve, when the container body is pressed and squeezed and deformed in the volume reduction direction, the container body The internal pressure increases, and the content is discharged by pushing the discharge valve open by the increased pressure. At this time, the intake valve is maintained in the “closed” state by the increased internal pressure, and the discharge of the outside air located between the outer layer and the inner layer is prevented.

  When the pressing force against the container body is removed, the outer layer attempts to return to its original shape by its restoring force, and thus decompression occurs in the container body. By this decompression, the intake valve opens quickly, and the outside air is sucked between the outer layer and the generated decompression is extinguished. At this time, pressure reduction also acts on the discharge valve, but the discharge valve is located inside the discharge valve in a state where the flow is suppressed by the suppression unit, that is, in a state where it is difficult to move. As a result, the valve cannot be opened quickly, and the check valve function is reliably exhibited in a state where pressure is reduced.

  In addition, when the container body is pressed to discharge the contents, the suppression unit exerts a suppression action on the discharged contents. The effect of the suppression action is to open the discharge valve and discharge the contents. However, it is necessary to slightly increase the pressing force applied to the container body, and there is no inconvenience due to this effect in actual use.

  Thus, the reliable check valve function exhibited by the discharge valve can be obtained by the combination with the suppression unit, that is, the flow suppression effect of the suppression unit on the contents located inside the discharge valve. The discharge valve can have a normal thin slit valve structure that can quickly obtain the on-off valve action, and the shape is also freely set to a desired shape without being specified in a bullet shape. be able to.

  Another configuration of the present invention is the above-described main configuration, in which the cap body is tightly assembled to the cap body having a body portion that covers the mouth tube portion of the container body, and the opening end of the mouth tube portion of the container body, It is composed of a top-supported cylindrical stopper plug and a valve body that is tightly assembled and fixed between the support stopper and the cap body, and is provided inside the discharge valve provided at the upper end of the valve body. The top plate portion of the supporting plug located in the immediate vicinity has a structure in which a baffle plate piece-like baffle plate piece is left open and a baffle plate piece is used as a restraining portion.

  In the case where the suppressing part is configured by a baffle plate piece provided in the supporting plug that holds the valve body between the cap body and the cap body, the suppressing part is stably and reliably positioned close to the inside of the discharge valve. be able to.

  Another configuration of the present invention is a configuration in which the suppression portion is formed of a baffle plate piece in addition to the main configuration described above. In addition to that, it is in the shape of a crossed beam.

  In the case where the slit of the discharge valve has a cross shape and the baffle plate piece is in the shape of a cross beam facing the slit, the baffle plate piece must be securely positioned in the vicinity of the slit which is the opening / closing hole of the discharge valve. Therefore, the baffle plate piece directly exerts a restraining action on the flow of the contents located inside the slit, and this effectively exerts the restraining action of the restraining portion against the contents liquid. I will let you.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the main configuration of the present invention, the reliable check valve function exhibited by the discharge valve can be obtained by the flow suppressing action of the suppressing portion with respect to the contents located inside the discharge valve. The valve can be a normal thin slit valve structure, and its shape can also be freely set to a desired shape, reducing the consumption of expensive soft elastic material forming the discharge valve, A reduction in material cost can be obtained, and the degree of freedom in setting the structure of the discharge valve can be increased.

  In the case where the suppressing part is configured by a baffle plate piece provided in the supporting plug that holds the valve body between the cap body and the cap body, the suppressing part is stably and reliably positioned close to the inside of the discharge valve. Therefore, the suppression action with respect to the content by the suppression part can be effectively and effectively acted on the check valve function of the discharge valve.

  In the case where the slit of the discharge valve has a cross shape and the baffle plate piece is in the shape of a cross beam facing the slit, the baffle plate piece must be securely positioned in the vicinity of the slit which is the opening / closing hole of the discharge valve. Therefore, the suppressing action of the suppressing portion with respect to the content liquid is exhibited extremely effectively, and thereby the discharge valve can stably and surely perform the check valve function.

It is the whole surface view which cut the principal part half longitudinally which shows the example of 1 embodiment of this invention. It is the enlarged view which cut the principal part half longitudinally at the time of the closed state of one embodiment of FIG. It is an enlarged plan view of the discharge valve of the embodiment of FIG. FIG. 2 is an enlarged plan view of a restricting portion of the embodiment of FIG. 1. It is the enlarged view which cut the principal part half longitudinally at the time of the open state of one embodiment of FIG.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 shows an embodiment of a container with a cap according to the present invention in a closed state in which the container is partially broken. A container body 1 which is a blow-molded product is a squeeze-deformable and flexible low-density polyethylene outer layer 2 (see FIG. 2), and is laminated on the outer layer 2 so as to be peelable. It is blow molded from a nylon inner layer 3 (see FIG. 2), which is formed into a bag shape that accommodates an article N and is freely reduced in volume by reducing the internal pressure, and is configured as a Delami bottle type container. .

  The trunk portion 7 has a bottomed cylindrical shape, has a shoulder step portion 6 at the upper end thereof, and a cylindrical mouth tube portion 4 is erected through a shoulder portion having a reduced diameter in an arc shape upward. The outer layer 2 constituting the mouth tube portion 4 is provided with a thread on the outer peripheral surface of the substantially upper half portion thereof, and outside air is passed through the outer layer 2 and the inner layer 3 in the substantially lower half portion. An air intake hole 5 for air intake is opened between them, and the outer peripheral surface of the shoulder step portion 6 is a smooth surface located outside the protruding end of the thread.

  A cap body 8 (see FIG. 2) assembled to the mouth tube portion 4 of the container body 1 is configured by combining a cap body 9, a valve body 20 made of a soft elastic material, and a supporting plug 25. 9 includes a main body portion 10 assembled to the mouth tube portion 4 of the container body 1 and a lid body portion 16 integrally coupled to the main body portion 10 by a hinge 19. The main body portion 10 has a cylindrical shape having a top tube 13 and a top wall 13 which are externally attached to the mouth tube portion 4 and screwed together. A seal portion 12 is formed in close contact with the smooth outer peripheral surface of the shoulder step portion 6 to prevent leakage of the sucked outside air. Further, an air inlet 15 is provided at the base end of the top wall 13 at the center. The opened cylinder piece 14 is erected. The lid body portion 16 coupled to the main body portion 10 with a hinge 19 is provided with a plug piece 17 that can be fitted into the tube piece 14 of the main body portion 10 at the center of the bottom surface of the top plate. The inner top plate portion is a holding top plate 18 that is depressed in a spherical arc shape.

  The valve body 20 basically has a top cylindrical structure, and is provided with an intake valve 22 from the outer peripheral surface of the cylindrical assembly main body 21 in the form of an outer casing, and discharges a top wall portion that is depressed in a spherical arc shape. The valve 23 is configured. The intake valve 22 formed into a thin outer casing shape allows the outside air to enter from the intake port 15 by bringing the peripheral end portion into close contact with the lower surface portion of the top wall 13 outside the intake port 15. A check valve function that prevents discharge of outside air from the intake port 15 is exhibited. The discharge valve 23 formed in the top wall portion depressed in a spherical arc shape is formed into a thin slit valve structure by providing a cross-shaped slit 24 (see FIG. 3) on the top wall portion. In addition, the cylindrical body which forms the discharge valve 23 at the upper end is in a protected state by being located in the cylindrical piece 14 of the main body 10.

  The supporting plug 25 is tightly fitted and assembled to the opening end of the mouth tube portion 4, and is firmly fitted and fitted to the upper end portion of the inner peripheral surface of the assembled cylinder 11 of the cap body 9. The valve body 20 is held in a sandwiched manner with the portion 10, and the top wall portion of the top cylindrical support tube portion 26 standing upright in the center and located close to the discharge valve 23 has four parts. A through hole 28 (see FIG. 4) is opened to form a cross-shaped beam plate-like baffle plate piece 27a (see FIG. 4), and this baffle plate piece 27a functions as the restraining portion 27. . Since the baffle plate-like baffle plate pieces 27a have the through holes 28 adjacent to the baffle plate pieces 27a, the contents N flowing from the through holes 28 to the slits during the discharge operation of the contents N. It does not exert a great deterrent power against.

The mutual relationship between the size of the baffle plate piece 27a and the through hole 28 is set according to the viscosity of the content N. When the viscosity of the content N is large, the baffle plate piece 27a is and thin, to increase the through hole 28, and a baffle plate piece 27a is wider when the viscosity of the contents N Conversely is small, a smaller hole 28, thereby suppressing the inhibitory portion 27 for the contents of N Adjust and set the action.

Next, operation examples of the illustrated embodiment will be described in order.
In the “closed” state of the lid body portion 16 shown in FIG. 1, the pressing top plate 18 of the lid body portion 16 is positioned in contact with or very close to the discharge valve 23, and is “opened” to the discharge valve 23. Therefore, even if the internal pressure of the container body 1 rises due to the pressing force acting on the body 7, the discharge valve 23 is pressed by the pressing top plate 18 and the valve opening operation is performed. And the container is safely held in a state that does not cause unauthorized discharge of the contents N.

  In the “open” state of the lid portion 16 shown in FIG. 5, when the internal pressure rises by pressing the body portion 7 of the container body 1, the content N pushes the discharge valve 23 open by the increased internal pressure, and this discharge It is discharged from the valve 23. When the desired amount of contents N is discharged and the pressing force is removed, the discharge valve 23 is closed and the discharge operation is completed. When the discharge operation is completed, a restoring force is generated in the outer layer 2, a decompression is generated in the container body 1, and external air opens the intake valve 22 from the intake port 15, and through holes and ports formed in the supporting plug 25. Through the threaded assembly portion of the cylinder portion 4 and the assembly cylinder 11, the air is sucked in between the outer layer 2 and the inner layer 3 from the intake hole 5, and the reduced pressure in the container body 1 disappears quickly.

  At this time, the reduced pressure of the raised container body 1 also acts on the discharge valve 23 at the same time. However, the flow of the contents N located inside the discharge valve 23 is suppressed by the suppression unit 27 and flows. Since it is difficult to move, it cannot flow to a position where the discharge valve 23 can be opened during the rapid depressurization operation by the intake valve 22. For this reason, the discharge valve 23 does not allow outside air to enter due to the decompression of the container body 1, and as a result, a stable and reliable check valve function is exhibited.

  Note that the present invention is not limited to the above-described embodiment. For example, the base cup is closely assembled to the lower end portion of the trunk portion 7, and the intake valve function portion is provided between the base cup and the bottom portion of the container body 1. The pinch-off portion may be formed, the baffle plate piece 27a may be a simple flat plate shape instead of a cross beam piece, and the cap body 9 is not a hinge cap, but the main body portion 10 and the lid. The body part 16 may be configured as a separate object, or the discharge valve 23 may be configured to bulge into a flat plate shape or a spherical arc shell shape instead of a concave structure like a spherical arc shell shape. Further, the slit 24 can be formed in a single line shape or a triple line shape instead of a cross shape. Although not shown in the figure, a pair of intake valves 22 are provided symmetrically, and a band-like adhesive band is provided over the entire height range of the container body 1 between the outer layer 2 and the inner layer 3 avoiding both intake valves 22. It is also possible.

  As described above, the container with a cap according to the present invention can be safely used in a container with a cap of a Delami bottle type because a slit valve that has an extremely simple structure and can perform quick valve operation can be used safely. The effect of simplifying the discharge valve portion of the bottle-type cap-equipped container at low cost is demonstrated, and a wide range of usage development is expected for the container with the Delami bottle-type cap.

DESCRIPTION OF SYMBOLS 1; Container body 2; Outer layer 3; Inner layer 4; Mouth part 5; Intake hole 6; Shoulder step part 7; Trunk part 8; Cap body 9; Cap main body 10; Main part 11; Top wall 14; cylinder piece 15; intake port 16; lid 17; plug piece 18; holding top plate 19; hinge 20; valve body 21; assembled body 22; Supporting stopper 26; support cylinder 27; restraining part 27a; baffle plate piece 28; through hole N;

Claims (3)

A container body (1) made of a synthetic resin, which is blow-molded into a bottle and contains a viscous content (N), and a mouth tube (4) of the container body (1) are assembled closely. The container body (1) has a flexible outer layer (2) that can be squeezed and can be restored, and the outer layer (2) is detachably laminated. And the inner layer (3) which accommodates the contents (N) and can be freely reduced in volume, and allows the contents (N) to be discharged into the mouth tube portion (4), but the outside air A discharge valve (23) for preventing intrusion is provided, and an intake hole (5) is formed in a part of the outer layer (2), and the intake hole (5) is provided between the outer layer (2) and the inner layer (3). An intake valve (22) is provided that allows outside air to enter but prevents the outside air from being discharged, and the discharge valve (23) has a slit valve structure made of a soft elastic material. Ri, up close inside the said discharge off valve (23), against the reduced pressure acting on the discharge valve (23), exert a restraining force on the flow of the contents located inside the discharge valve (23) (N) A container with a cap, wherein the restraining part (27) to be moved is located.
The cap body (8) is closely assembled to the cap body (9) having a body portion (10) for sheathing the mouth tube portion (4) of the container body (1) and the open end of the mouth tube portion (4). And a valve body (20) that is tightly assembled and fixed in a sandwiched manner between the support plug (25) and the cap body (9). The top plate portion of the supporting plug (25) located near the inside of the discharge valve (23) provided at the upper end of the valve body (20) is left with the baffle plate-like baffle plate piece (27a). The container with a cap according to claim 1, wherein a through hole (28) is provided and the baffle plate piece (27a) is a suppressing portion (27). The container with a cap according to claim 2, wherein the slit (24) provided in the discharge valve (23) has a cross-shaped shape, and the baffle plate piece (27a) has a cross-shaped beam shape positioned opposite the slit (24).

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