JP4883506B2 - Discharge container - Google Patents

Description

  The present invention relates to a synthetic resin squeeze deformable and delaminated discharge container that accommodates viscous contents in a dischargeable manner.

  As a container for storing viscous contents such as mayonnaise and ketchup in a dischargeable manner, a synthetic resin bottle-type squeeze container capable of volume reduction deformation and restoration deformation is widely used.

  Most of the viscous contents stored in this squeeze container do not like contact with oxygen, but the quality of the viscous contents is maintained well over a long period of time, and Conventional techniques are known in which a discharge container is constituted by a Delami bottle type container having a delamination structure so that a quick and good discharge operation of contents can be obtained.

In the above prior art, an appropriate squeezing property is obtained by selecting and combining molding resin materials for the outer layer body and the inner layer body, and setting and combining the elastic modulus of the outer layer body and the inner layer body.
JP 2004-196357 A

  However, in the above-described prior art, when the body portion of the container body is pressed to discharge the viscous contents, the outer layer body portion of the depressed portion formed in the body portion by the pressing operation is quickly Has a problem that it may not be restored and deformed.

  This is because, as shown in FIG. 8, the Delami bottle type container main body (a) comprising the outer layer body (B) and the inner layer body (C) is configured with a smooth wall structure in the body (d), so that the contents can be discharged. When the body portion d is pressed from the front and back to be elastically deformed by depression and as shown in FIG. However, it will be in the state close | similar to inversion bending.

  For this reason, it is considered that the elasticity for restoring deformation of the outer layer body B is received by the side edge bent portion b, and the restoring deformation cannot be performed promptly.

  This problem is solved by increasing the elasticity of the outer layer body B, but with the configuration shown in FIGS. 8 and 9, it is possible to obtain a quick restoration deformation of the depressed portion a when pressed, When the elasticity of the outer layer body B is increased, the operation force required for the squeeze deformation of the body part D increases, and a problem arises that a smooth squeeze deformation operation cannot be obtained accordingly.

  Therefore, the present invention was devised to solve the above-mentioned problems in the prior art, and is a technique for obtaining a quick restoration deformation of a depressed portion during pressing without increasing the elasticity of the outer layer body of the trunk portion. It is an object of the present invention to make it possible to quickly return to a dischargeable state while maintaining an appropriate squeeze property.

Dispensing container according to the invention, it can squeeze deformation is releasably laminated to the outer layer body and the outer body having a restoring freely flexible, inner layer accommodating the viscous contents compacting deformed self standing A body having a body , the lower end is closed at the bottom, and the diameter is gradually reduced upward from a height position near the center, and the outer layer is connected to the upper end of the body, A container body (1) made of a synthetic resin that is blow-molded with a mouth tube portion having an intake hole for sucking outside air between the inner layer body and the inner layer body .

A circumferential groove having a constant groove depth is provided around the body portion of the container body to which a pressing operation force is applied , and at a height position in the vicinity of the central portion where the diameter reduction starts .

  When the body portion is pressed to discharge the viscous contents, the side end bent portion of the depressed depression portion formed by depression is bent with a large curvature radius without being bent.

This is because the center of the peripheral groove, and acts as a reinforcing rib against bending of the side edge bent portion is believed to be due to increasing the rigidity of this portion.

  In this way, since the side edge bent portion is bent with a large radius of curvature, when the pressing operation force is removed, the depressed portion when pressed is a bent portion of the peripheral end including the bent portions on both sides due to the elasticity of the outer layer body. Recover promptly in the form of approaching.

Further, by providing to the central circumferential groove, the circumferential groove of the center is to function as a reinforcing rib against the barrel, but will enhance the rigidity of the body, when growing this rigidity is large, Since the squeeze property of the body part is lowered, the thickness of the outer layer body of the body part is reduced to prevent the squeeze property of the body part from being lowered.

  In this case, even if the thickness of the outer layer body is reduced, the bending curvature radius of the side edge bent portion remains large, so that a quick restoration deformation of the depressed portion during pressing can be obtained.

Another configuration of the present invention, a flat cross-sectional shape of the trunk portion of the container body is substantially oval, on both side portions of the long axis Direction of the container body of the oval, so as not to peel the outer member and the inner member A longitudinally long adhesive band that is bonded and fixed is provided over the entire height range of the container body .

  In the case where the body of the container body has an elliptical cylindrical shape and is provided with an adhesive band, the side bent portion of the depression part when pressed is formed by pressing the intermediate body part between the two adhesive bands. However, it will be located near the body part where the adhesive band is provided, so the body part provided with the adhesive band that has increased mechanical strength stabilizes the deformation force acting on the side edge bent part. As a result, the elasticity of the depressed portion when pressed acts effectively on the restoring deformation.

  In addition, when pressing while gripping the body portion of the container body, it is easy to hold the flat portion of the trunk portion on the short axis direction with the fingertips, and the trunk portion on the short axis direction side has a large radius of curvature. Therefore, it is easy to be deformed by pressing, and a large depressed part is formed for the amount of depression.

Another configuration of the present invention, the outer layer member, while the low-density polyethylene, the inner layer material, and ethylene-vinyl alcohol copolymer manufactured, to form a discharge port to the mouth tube portion of the container body, A cap having a discharge valve that allows the discharge of contents but prevents the entry of outside air, and an intake valve that allows the entry of outside air between the outer layer body and the inner layer body, but prevents the discharge of the outside air that has entered. It is that it is assembled to the mouth tube part.

  The outer layer body is made of low density polyethylene, the inner layer body is made of an ethylene-vinyl alcohol copolymer, and the cap body having a discharge valve and an intake valve is provided on the mouth tube portion of the container body. An outer layer body having good squeeze properties and a smooth and excellent tactile sensation can be obtained, and an inner layer body exhibiting a high gas barrier property against oxygen can be obtained.

  In addition, since the valve function portion having a complicated structure is provided in the cap, the valve function portion does not complicate the structure of the container body that is a blow molded product.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the present invention, the body portion of the container body, since only provided center circumferential groove is a portion where the pressing force is applied, its implementation is easy.

  In addition, since the depressed portion at the time of pressing after the content discharge quickly restores, the repeated discharge operation of the content can be reliably and stably obtained, and the delami bottle type container containing the viscous content is preferable. The operating state can be obtained.

Furthermore, by providing a circumferential groove in the center , it becomes possible to reduce the thickness of the outer layer body, and accordingly, the amount of the synthetic resin material for molding the outer layer body can be reduced. It is possible to obtain an effect.

  In the case where the body portion of the container body is substantially oval and provided with a pair of adhesive bands, the viscous content can be easily discharged and the desired content can be easily projected.

  The outer layer body is made of low density polyethylene, the inner layer body is made of an ethylene-vinyl alcohol copolymer, and a cap having a discharge valve and an intake valve is assembled to the mouth tube portion of the container body. Can be used as a delami bottle type container utilizing squeeze properties, and can obtain a high quality preservability of viscous contents, and the structure of the container body that is a delami bottle type container is complicated. In this way, stable outside air intake and blocking can be obtained.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an overall front view of the container body 1 and FIG. 2 is an overall side view of the body 6 with the lower end closed at the bottom. A short cylindrical mouth tube portion 4 is provided upright and continuously.

  The container body 1 is a squeeze-deformable and flexible low-density polyethylene outer layer body 2 and is laminated to the outer layer body 2 so as to be peeled off. It is blow molded from an inner layer body 3 made of an ethylene-vinyl alcohol copolymer, which is molded into a bag shape that can be freely reduced in volume by reduction, and is configured as a Delami bottle type container.

The body portion 6 has an elliptical cylindrical shape that is slightly flattened back and forth, and a circumferential groove 7 is provided in the center of the body portion, which is a height position where it can be easily grasped with one hand. , the circumferential groove 7 of this has a structure having a trench sidewall that is widening inclined above and below the Mizosokokabe.

In the case of the illustrated embodiment, the circumferential groove 7 has a groove bottom wall width of 3 mm, an open groove width of 7 mm, and a groove depth of 2 mm. In such a state, it can be pressed.

  The mouth tube portion 4 has a thread formed on the outer peripheral surface thereof, and outside air is sucked between the outer layer body 2 and the inner layer body 3 into a portion of the outer layer body 2 that is opposed to the front and rear of the lower portion of the thread. The lower end portion of the outer peripheral surface is a bulging portion having an outer diameter larger than the outer diameter of the screw.

  Further, the outer layer body 2 and the inner layer body 3 are bonded and fixed to both side portions of the container body 1, that is, the elliptical long axis direction portion of the body portion 6 over the entire height range of the container body 1. A longitudinal band-like adhesive band 6a (see FIGS. 2 and 3) is provided, whereby the inner layer body 3 which is deformed by warping is partitioned forward and backward, and the pair of air intake holes 5 has two of them. Each of the inner layer body 3 sections that are partitioned in a one-to-one relationship.

When the front and rear central portions of the body portion 6 where the circumferential groove 7 is located are gripped and pressed by a fingertip, the center portion of the body portion 6 is depressed together with the circumferential groove 7 as shown in FIG. The consistency content M is discharged. At this time, the depressed portion a is a part of the peripheral end portion, and the side-end bent portion b on the circumferential side is a circumferential groove in the center as shown in FIG. Compared to the case where there is no 7, there is a bending with a large radius of curvature.

Thus, depression deformation of the pressing during recess a, as shown in FIG. 9, not the inverted variant, it is a simple bending deformation by a central circumferential groove 7, thereby will be quickly ensured.

  A cap 8 (see FIG. 5 and FIG. 7) assembled to the mouth tube portion 4 of the container body 1 is coupled to a cap body 9 forming the discharge port 12 and a hinge 17 to the cap body 9. And a lid 16 that opens and closes 12.

  The cap body 9 is composed of an assembled cylinder 10 that is tightly screwed to the mouth tube section 4 and a top wall section 11 that is positioned at the upper end of the assembled cylinder 10. The discharge port 12 and the intake port 13 at the peripheral end, and the discharge valve that allows the viscous content M to be discharged to the location facing the discharge port 12 from below, but prevents the outside air from entering. 14 and a portion facing the intake port 13 from below is provided with an intake valve 15 that allows the intake of outside air but does not allow the intake air to be discharged.

  The lower end opening portion of the assembled cylinder 19 is closely fitted to the bulging portion, which is the lower end portion of the mouth tube portion 4, so that intrusion of outside air into the intake hole 5 is from other than the intake port 13 of the cap body 9. Making it impossible.

  Therefore, as shown in FIG. 4, when the container body 1 is tilted in an inverted state with the discharge port 12 opened, the center portion of the body portion 6 is gripped and pressed, according to the increase in internal pressure accompanying this pressing, The discharge valve 14 is opened (see FIG. 5), and the viscous content M is discharged from the discharge port 12.

  At this time, since the pressure in the space c formed between the outer layer body 2 and the inner layer body 3 is higher than the atmospheric pressure, the intake valve 15 is in a “closed” state and discharges the outside air in the space c. Stop.

  When the discharge of the desired amount of the viscous content M is finished and the action of the pressing force on the body portion 6 is released, the discharge valve 14 is in the “closed” state by the restoration of the outer layer body 2 portion of the depressed portion a at the time of pressing. At the same time, the intake valve 15 is in the “open” state, sucking outside air into the space c (see FIG. 7), and preparing for the next discharge operation.

  As described above, the delamination bottle type container using the squeeze property of the present invention can quickly recover the depressed deformation accompanying the squeeze operation without reducing the squeeze property. First, it can be expected that the container can be widely used for a squeeze operation container.

It is the front view which showed the example of embodiment of a container main part, and expanded partially longitudinally. It is a side view of the container main body shown in FIG. FIG. 2 is an enlarged plan sectional view taken along the line AA in FIG. 1 and partially enlarged. It is a whole longitudinal cross-sectional view explaining discharge operation | movement. FIG. 5 is an enlarged vertical cross-sectional view of the cap body portion of FIG. 4. It is a whole longitudinal cross-sectional view explaining a decompression | restoration operation | movement. FIG. 7 is an enlarged vertical cross-sectional view of the cap body portion of FIG. 6. FIG. 10 is a partially enlarged front view showing a conventional example of a container body. It is an expanded plane sectional view of the trunk | drum center part of the container main body shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1; Container main body 2; Outer layer body 3; Inner layer body 4; Mouth tube part 5; Inlet hole 6; Body part 6a; Adhesive band 7; Circumferential groove 8; Cap 9; 12; discharge port 13; air intake port 14; discharge valve 15; air intake valve 16; lid body 17; hinge body; container body b; outer layer body c; inner layer body d; body portion a; c; space

Claims (3)

Can squeeze deformation, outer body (2) having a restoring freely flexible and is releasably laminated to the outer layer body (2), an inner layer body accommodating the viscous contents compacting deformed self standing (3), the lower end is closed at the bottom and the diameter of the barrel (6) is gradually reduced upward from the height position near the center, and the upper end of the barrel (6) is continuously provided. A mouth tube portion (4) having an intake hole (5) for sucking outside air between the outer layer body (2) and the inner layer body (3) in the outer layer body (2) portion. It has a container body (1) made of synthetic resin that is blow molded,
Container body (1), with the body portion (6) portions pressing force is applied, to and height of the central portion near the diameter begins, circumferential groove consisting of a constant groove depth (7) A discharge container characterized by being provided around. Body portion of the container body (1) a flat cross-sectional shape of (6) as a substantially elliptical shape, on both side portions of the elliptic circle of the long axis Direction of the container body (1), the outer layer member (2) and inner layer body ( The discharge container according to claim 1 , wherein a vertically long adhesive band (6a) for adhering and fixing 3) is provided over the entire height range of the container body (1) . Outer body (2), while the low-density polyethylene, inner body (3), and ethylene-vinyl alcohol copolymer, manufactured by mouth tube portion of the container body (1) (4) the discharge opening (12) to form a, it allows the discharge of the contents, but the discharge valve from entering of outside air is to prevent (14), allowing the outside air from entering between the outer body (2) an inner layer body (3), penetration The discharge container according to claim 1 or 2, wherein a cap (8) having an intake valve (13) for preventing discharge of outside air is attached to the mouth tube portion (4) .

Images