JP2007091341A - Flexible container - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a flexible container capable of easily discharging content remaining in a neck or near the neck part. <P>SOLUTION: This synthetic resin-made flexible container 10 pushes the content out held in a flexible and deformable container body 11 from the discharging opening 13 at the tip of the neck part 12 in which a male screw 15 is set up, has an intermittent connection part 30 which traverses the male screw 15 in the axial direction X of the neck part 12 by that an intermittent part 16 in which a projection forming the male screw 15 is devoid is arranged side by side in the axial direction X of the neck part 12 in a pair of opposed positions of at least the peripheral direction in the neck part 12, and keeps a thin-walled section due to a concave groove 17 set up by being extendedly provided in the axial direction X of the neck part 12 in the part 30, respectively. The container body 11 is equipped with a pupil cross-sectional shape which has continuously provided both the ends of a front part 11a and a back face part 11b which are bent outside by intervening a bending induction rib part 18, and the intermittent part 16 of the intermittent screw 15 is arranged side by side on the extension of the bending induction rib section 18. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a flexible container made of a synthetic resin that extrudes the contents accommodated in a container body that can be flexibly deformed from a discharge port at the tip of a mouth-and-neck part having a male screw provided on the outer peripheral surface.

  For example, a flexible container made of a soft synthetic resin is known as a container for storing mayonnaise, ketchup, pizza sauce, soft butter, cream, soft chocolate and the like having a relatively high viscosity. The flexible container is formed by continuously connecting a mouth and neck portion having a discharge port to a container main body for storing contents, and removing a cap screwed through a male screw of the mouth and neck portion, By holding and pressing, the contents are discharged from the discharge port.

In order to efficiently discharge the contents from the container body of the flexible container, it is desirable that the container body be deformed as flat as possible after discharge. The flexible container made easy is disclosed (for example, refer patent document 1 and patent document 2).
JP 2001-219948 A JP 2003-165551 A

  However, in the conventional flexible container, it is possible to efficiently discharge the contents inside the container body by folding or crushing the container body. Since the synthetic resin is thick and the male screw is provided in the vicinity of, it is difficult to press and deform, and it is difficult to discharge the contents remaining in these parts.

  An object of this invention is to provide the flexible container which can discharge easily the content left in the part in the vicinity of the mouth neck part and the mouth neck part.

  The present invention is a synthetic resin flexible container that pushes out the contents contained in the container body that can be flexibly deformed from the discharge port at the tip of the mouth-and-neck portion provided with a male screw on the outer peripheral surface, At least a pair of opposed positions in the circumferential direction of the mouth-neck portion, the intermittent portion lacking the protruding portion constituting the male screw is arranged side by side in the axial direction of the mouth-neck portion, whereby the male screw is Intermittent continuous portions that cross the axial direction of the mouth-and-neck portion are formed, and a thin-walled portion formed by a concave groove extends in the axial direction of the mouth-and-neck portion, and is provided in the intermittent continuous portion. The above object is achieved by providing a flexible container.

  According to the flexible container of the present invention, it is possible to easily discharge the contents left in the mouth-neck portion and the portion in the vicinity of the mouth-neck portion, and reduce the remaining squeezed contents.

  A flexible container 10 according to a first preferred embodiment of the present invention shown in FIGS. 1 (a) and 1 (b) is, for example, a liquid having a relatively high viscosity as its contents, and an apparent viscosity of 2000 mPa · A container made of soft synthetic resin containing mayonnaise, which is one of relatively high viscosity liquids of s to 420000 mPa · s. The container body 11 and the container body 11 are connected and integrated at the front end side in the discharge direction. And the mouth-and-neck portion 12. And the flexible container 10 of this 1st Embodiment hold | maintains the container main body 11, for example, after removing the cap 14, Preferably, in the state which inclined the discharge outlet 13 of the front-end | tip of the mouth-and-neck part 12 below, By pressing the main body 11, the contents are discharged. When the contents are discharged, the contents are preferably stored in an inverted state in which the mouth-and-neck portion 12 is placed downward, so that the remaining contents are guided downward toward the mouth-and-neck portion 12 and are used at the next use. The contents are smoothly discharged from the discharge port 13. Even when the flexible container 10 of the first embodiment has a small remaining content and is accumulated only in the mouth-neck portion 12 or a portion in the vicinity of the mouth-neck portion 12, the contents left in these portions are retained. It is used to smoothly discharge an object and reduce the remaining squeezed contents.

  And the flexible container 10 of this 1st Embodiment is the content accommodated in the container main body 11 which can be deformed flexibly from the discharge outlet 13 of the front-end | tip of the mouth-and-neck part 12 in which the external thread 15 was provided in the outer peripheral surface. As shown in FIGS. 2 (a) and 2 (b), the male screw 15 is at least a pair of opposed positions in the circumferential direction of the mouth / neck portion 12. (In the first embodiment, d. Pair), an intermittent screw having an intermittent portion 16 partially lacking the spiral ridge portion constituting the male screw 15, and the intermittent portion 16 is formed on the mouth and neck portion 12. By being arranged side by side in the axial direction X, intermittently connected portions 30 and 30 ′ that cross the male screw 13 in the axial direction X of the mouth and neck portion 12 are formed, and the intermittently connected portions 30 and 30 are formed. The thin-walled portions by the concave grooves 17 are provided so as to extend in the axial direction X of the mouth-and-neck portion 12, respectively. .

  Moreover, in this 1st Embodiment, as shown in FIG.1 (b), the container main body 11 is a pair of pressing surface 31a of the front side and back side pressed in the direction which mutually adjoins when pushing out the contents, 31b, and a pair of intermittently connected portions 30 is formed in the mouth and neck portion so as to face each other in a direction perpendicular or substantially perpendicular to the pressing direction Y of the pair of pressing surfaces 31a and 31b (see FIG. 2B). 12 is provided.

  Furthermore, in the first embodiment, the container body 11 has a continuous shape with both ends of the back surface portion 11b curved outward as well as the front surface portion 11a curved outward, with the bending guide rib portions 18 interposed therebetween. The bending guide rib 18 has an acute angle inside, and the container body 11 has a pupil cross-sectional shape in which the cross-sectional shape is a pupil shape, and the front part 11a and the back part 11b are a pair of pressing surfaces on the front side and the back side. A pair of intermittently connected portions 30 formed by the intermittent portion 16 of the intermittent screw 15 are provided on the extension of the bending guide rib portion 18 (see FIGS. 2A and 2B). .

  Furthermore, in the first embodiment, the intermittent portion 16 lacking the protruding portion constituting the male screw 15 is opposed to the pressing direction Y of the pair of pressing surfaces 31a and 31b. Is provided with another pair of intermittently connected portions 30 ′ formed by being arranged side by side (see FIG. 1 (a)), and these other pair of intermittently connected portions 30 ′ are also provided. Thin portions due to the concave grooves 17 are provided so as to extend in the axial direction X of the mouth-and-neck portion 12.

  The container body 11 is formed by blow-molding together with the mouth neck portion 12 using, for example, LDPE (low density polyethylene) as a soft synthetic resin, and is a flexible container that can be flexibly deformed. Further, by grasping and pressing the container body 11 filled with the contents therein, the container body 11 as a flexible container is deformed, and the contents can be easily discharged from the discharge port 13 of the mouth / neck portion 12. It can be discharged now.

  The contents contained in the container body 11 are preferably those having an apparent viscosity of 2000 to 420,000 mPa · s at 20 ° C., particularly those having an apparent viscosity of 2000 to 250000 mPa · s at 20 ° C. Moreover, in an actual use state, it is preferable that the apparent viscosity of the contents accommodated in the container main body 11 is 4000 to 320,000 mPa · s at 10 ° C. That is, the viscosity of the contents stored in the container body 11 varies depending on the temperature. According to the present invention, when the contents are discharged, the apparent viscosity of the contents is in a state of 4000 to 320,000 mPa · s. However, it can be easily discharged from the discharge port 13.

  The mouth / neck portion 12 integrally formed with the container body 11 has a discharge opening 13 formed at the tip thereof, and the inner diameter of the mouth / neck portion near the tip of the mouth / neck portion 12 is, for example, about 10 to 25 mm. A male screw 15 is provided as an intermittent screw on the outer peripheral surface. In addition, the intermittent portion 16 of the intermittent screw 15 is arranged side by side in the axial direction X of the mouth-and-neck portion 12 at four positions at equal angular intervals of 90 degrees in the circumferential direction of the mouth-and-neck portion 12. A pair of intermittently connecting portions 30 facing in the direction perpendicular or substantially perpendicular to the pressing direction Y of the pair of pressing surfaces 31a and 31b and another pair of intermittently connecting portions 30 ′ facing the pressing direction Y are formed. The In other words, the intermittent portions 16 are arranged vertically at positions opposite to each other in the diametrical direction of the two pairs in the circumferential direction of the mouth-neck portion 12, and two pairs of intermittent portions where the intermittent portions 12 are arranged vertically. The connecting portions 30 and 30 ′ are each provided with a groove 17 having a substantially semicircular cross-sectional shape extending linearly in the axial direction of the mouth-neck portion 12 over substantially the entire length of the mouth-neck portion 12. ing. Due to the concave groove 17, a band-shaped thin portion is formed in the mouth-and-neck portion 12, or it can be easily folded along the concave groove 17.

  Moreover, in this 1st Embodiment, one pair of intermittent connection part 30 of the two pairs of intermittent connection parts 30 and 30 'arranged oppositely is a container main body provided with a pupil cross-sectional shape as mentioned above. 11 are arranged side by side on the extension of the bending guide rib portions 18 located at both ends of the head 11. Accordingly, it is possible to perform an operation of crushing the mouth and neck portion 12 continuously with the operation of flatly crushing the container body 11 via the bending guide rib portion 18, and the container body 11 and the mouth and neck portion 12. It is possible to squeeze the entire surface substantially flat, and the contents remaining in the mouth-neck portion 12 and the portion in the vicinity of the mouth-neck portion 12 can be discharged more smoothly.

  Here, the folding guide rib portions 18 provided at both ends of the container body 11 having a pupil cross-sectional shape exert a function of easily performing an operation of crushing and flattening the container body 11 and flattening the flat. It also exhibits the function of maintaining the state in which the container body 11 is set up so that it does not break. As shown in FIG. 3A, the bending guide rib portion 18 can be provided as a corner portion for connecting the front portion 11a and the back portion 11b when the container body 11 is blow-molded. As shown in FIG.3 (b), it can also provide as the bending | flexion induction | reduction rib part 18a of the double structure which folded the front-end | tip part of the said corner | angular part inside at valley fold shape. According to the bending guide rib portion 18a shown in FIG. 3B, the thickness of the bending guide rib portion 18a is thinly formed at the time of blow molding, and the content remaining inside the bending guide rib portion 18a is reduced. It becomes possible to extrude efficiently.

  For example, as shown in FIGS. 4 (a) and 4 (b), a bending guide rib portion 18b can be formed as a thin projection by providing a recess 19a in a die 19 at the time of blow molding. . According to the bending guide rib portion 18b shown in FIG. 4 (a), the contents remaining inside the bending guide rib portion 18b can be efficiently pushed out while crushing the thin protrusion.

  Further, as shown in FIG. 5, for example, by bending the continuous corner portions of the front portion 11a and the back portion 11b after blow molding, a bending induction rib portion 18c by hem seal can be provided. Therefore, it is possible to further improve the ease of crushing the bending guide rib portion 18c.

  In the present invention, the container main body 11 after being crushed is prevented from returning to its original shape, and air is prevented from entering the inside of the container main body 11 so as to prevent oxidative deterioration of the remaining contents. You can also. That is, for example, as shown in FIG. 6 (a), the container body 11 is formed so that the thickness of the back surface portion 11b is larger than the thickness of the front surface portion 11a, and the step portions at both ends are bent. As shown in FIG. 6B, when the container main body 11 is crushed, the inner shape of the front portion 11a does not return to the original shape even if the inner surface of the front portion 11a is brought into close contact with the inner surface of the rear portion 11b. Alternatively, for example, as shown in FIGS. 7A and 7B, a fitting convex portion 20a is provided on one of the front portion 11a and the rear portion 11b, and a fitting concave portion 20b is provided on the other, When the main body 11 is crushed, it is also possible to adopt a configuration in which these are fitted to closely contact the inner side surface of the front portion 11a and the inner side surface of the back surface portion 11b.

  And according to the flexible container 10 of this 1st Embodiment, the content left in the part near the mouth neck part 12 and the mouth neck part 12 can be easily discharged, and the squeezing residue of the contents is reduced. can do. That is, according to the first embodiment, the intermittent portion 16 lacking the protruding strip portion constituting the male screw 15 of the mouth-and-neck portion 12 has the mouth-and-neck in at least a pair of opposed positions in the circumferential direction of the mouth-and-neck portion 12. By being arranged side by side in the axial direction X of the portion 12, an intermittent connection portion 30 is formed that crosses the male screw 15 in the axial direction X of the mouth-and-neck portion 12, and the intermittent connection portion 30 has a recess. Since the grooves 17 (preferably thin-walled portions by the concave grooves 17) are provided so as to extend in the axial direction X of the mouth-and-neck portion 12, the male screws 15 are connected via the intermittent portions 16 and the concave grooves 17, respectively. The formed mouth-neck portion 12 can be easily crushed, whereby the contents remaining in the mouth-neck portion 12 and the vicinity of the mouth-neck portion 12 can be easily discharged.

  FIG. 8 shows a main part of the flexible container 21 according to the second embodiment of the present invention. In the flexible container 21 according to the second embodiment, in addition to the configuration of the flexible container 10 according to the first embodiment, the cross-sectional area of the container body 11 is increased in a portion close to the mouth / neck portion 12. A spherical thin wall bulging portion 22 is provided. Also with the flexible container 21 of the second embodiment, the same operational effects as the flexible container 10 of the first embodiment are exhibited. Further, the vicinity of the mouth / neck portion 12 of the container body 11 is continuous with the mouth / neck portion 12 with a cross-sectional area gradually smaller than that of the central portion of the container body 11, so that when blow molding, Although the thickness tends to increase, the thinned bulging portion 22 is provided in the vicinity of the mouth-and-neck portion 12, thereby avoiding an increase in thickness and crushing the container body 11 in the vicinity of the mouth-and-neck portion 12. It becomes possible to improve ease. In particular, when the contents are reduced and the contents left in the vicinity of the mouth / neck portion 12 of the container body 11 are guided, it is possible to easily crush the portions in the vicinity of the mouth / neck portion 12, The remaining discharge can be reduced.

  Fig.9 (a) shows the principal part of the flexible container 23 which concerns on 3rd Embodiment of this invention. In the flexible container 23 of the third embodiment, the step 24 (see FIG. 2A) at the boundary between the container main body 11 and the mouth-and-neck part 12 in the flexible container 10 of the first embodiment. Without providing them, these are made to continue smoothly. Also with the flexible container 21 of the third embodiment, the same effects as the flexible container 10 of the first embodiment are exhibited, and the increase in rigidity due to the stepped portion 24 at the boundary is eliminated. In addition, it is possible to avoid the contents from adhering to the stepped portion 24 and squeeze the contents more efficiently. Moreover, in this 3rd Embodiment, as shown in FIG.9 (b), the outer peripheral surface of the cap 25 is connected to the outer peripheral surface of the container main body 11 using the cap 25 which has the taper surface 25a inside, and lengthened hem | hem. By doing so, it becomes possible to maintain the aesthetic appearance of the flexible container 21 when the cap 25 is mounted.

  The present invention is not limited to the above-described embodiments, and various modifications can be made. For example, the container main body of the flexible container of the present invention does not necessarily have a pupil cross-sectional shape having bending guide ribs at both ends, and various other cross-sectional shapes such as a circle, an ellipse, and an oval However, it is preferable that the container body has a flat shape including a pair of pressing surfaces on the front side and the back side that are pressed in directions close to each other when the contents are pushed out. In addition to mayonnaise, the contents may be various contents such as ketchup, pizza sauce, soft butter, cream, and soft chocolate, or may be high viscosity such as toothpaste. Furthermore, the flexible container of the present invention can be used as a normal inverted container having a bottom as shown in FIG. 10B in addition to an inverted container as shown in FIG.

  Furthermore, it is not always necessary to provide two pairs of intermittently arranged portions opposed to each other in the diameter direction of the mouth / neck portion, and only one pair or three or more pairs can be provided. Further, for example, when two pairs of intermittently connected portions are provided at equal angular intervals of 90 degrees in the circumferential direction of the mouth and neck, as shown in FIG. 11A, the pressing direction Y of the pressing surfaces 31a and 31b. It is also possible to form a thin portion by the concave groove 17 only in the pair of intermittently connected portions 30 that face each other in a direction perpendicular or substantially perpendicular to the vertical direction. As shown in FIG. 11 (b), only the pair of intermittent continuous portions 30 facing the pressing direction Y in the direction perpendicular or substantially perpendicular to each other is formed with the thin groove portions, thereby facing the pressing direction Y. Compared with the case where a thin wall portion is formed by the concave groove 17 in the other pair of intermittently connected portions 30 ′ (see FIGS. 12A and 12B), the mouth and neck portion 12 can be crushed more flatly. It becomes possible.

  In addition, the metal mold | die used when shape | molding the flexible container 10 is divided by dividing | segmenting a surface perpendicular | vertical to the pressing direction Y as a parting line PL so that a recessed part may be formed as flat as possible. For example, when the concave groove 17 is formed in the intermittent continuous portion 30 provided in the direction perpendicular to the pressing direction Y, the parting line PL passes through the concave groove 17 and the undercut portion. As a result, it becomes difficult to forcibly remove the mold (see FIG. 11A). On the other hand, for example, as shown in FIG. 13, the center position is shifted from the parting line PL and the groove 17 is disposed in the intermittent continuous portion 30 and the groove 17 is shallowly formed. This makes it possible to easily solve such a problem.

(A) is a front view of the flexible container which concerns on preferable 1st Embodiment of this invention, (b) is sectional drawing along AA of (a). (A) is a principal part front view of the flexible container which concerns on preferable 1st Embodiment of this invention, (b) is sectional drawing along BB of (a). (A), (b) is a schematic sectional drawing which illustrates the form of a bending induction rib part. (A) is a schematic cross-sectional view illustrating the configuration of the bending induction rib portion, and (b) is an explanatory view of a situation in which the bending induction rib portion of (a) is formed. It is a schematic sectional drawing which illustrates the form of a bending induction rib part. (A), (b) It is explanatory drawing of the structure which prevents the container main body after crushing from returning to an original shape. (A), (b) It is explanatory drawing of the structure which prevents the container main body after crushing from returning to an original shape. It is a principal part front view of the flexible container which concerns on preferable 2nd Embodiment of this invention. (A) is a principal part front view of the flexible container which concerns on preferable 3rd Embodiment of this invention, (b) is a principal part front view explaining the state which attached the cap to the flexible container of (a). is there. (A), (b) is explanatory drawing of the container used as a flexible container of this invention. (A) is sectional drawing which illustrates the other form of a mouth neck part, (b) is sectional drawing of the state which crushed the mouth neck part of (a). (A) is sectional drawing which illustrates further another form of a mouth neck part, (b) is sectional drawing of the state which crushed the mouth neck part of (a). It is a fragmentary sectional view which illustrates other forms of the thin part by the ditch | groove formed in the mouth neck part.

Explanation of symbols

10, 21, 23 Flexible container 11 Container body 12 Mouth neck 13 Discharge port 14 Cap 15 Male screw (intermittent screw)
16 Intermittent part 17 Groove (thin part)
18, 18a, 18b, 18c, 18d Bending guide rib portion 19 Mold 19a Mold concave portion 20a Fitting convex portion 20b Fitting concave portion 22 Thin bulging portion 24 Stepped portion 25 Cap 25a Taper surfaces 30, 30 'of cap Intermittent connection part 31a, 31b
X Axial direction of mouth and neck Y Pressing direction of pressing surface

Claims (8)

A flexible container made of synthetic resin that extrudes the contents accommodated in the container body that can be flexibly deformed from the discharge port at the tip of the mouth and neck portion provided with a male screw on the outer peripheral surface,
At least a pair of opposed positions in the circumferential direction of the mouth and neck, intermittent portions lacking a protruding portion constituting the male screw are arranged side by side in the axial direction of the mouth and neck, thereby the male screw An intermittent continuous portion that crosses in the axial direction of the mouth and neck is formed,
And the flexible container by which the thin part by a ditch | groove extends in the axial direction of the said mouth neck part, and is each provided in this intermittent connection part. The container body includes a pair of pressing surfaces on the front side and the back side that are pressed in directions close to each other when the contents are pushed out,
The flexible container according to claim 1, wherein the pair of intermittently connected portions are provided in the mouth-neck portion so as to face each other in a direction perpendicular or substantially perpendicular to a pressing direction of the pair of pressing surfaces.   The container body has a pupil cross-sectional shape in which both ends of a front part and a rear part that are curved outward are connected with bending guide ribs interposed therebetween, and the front part and the rear part are arranged on the front side and the back side. The flexible container according to claim 2, wherein the flexible container includes a pair of pressing surfaces and a pair of the intermittently connected portions provided on an extension of the bending guide rib portion.   The flexible container according to claim 3, wherein the bending guide rib portion is formed as a thin protrusion.   Opposite to the pressing direction of the pair of pressing surfaces, another pair of intermittents formed by disposing intermittent portions in which the protruding strips constituting the male screw are lacking are arranged side by side in the axial direction of the mouth-and-neck portion The flexible container according to any one of claims 2 to 4, wherein a continuous portion is provided.   The flexible container according to claim 5, wherein a thin-walled portion by a concave groove is provided in each of the other pair of intermittently connected portions so as to extend in the axial direction of the mouth-and-neck portion.   The flexible container according to any one of claims 1 to 6, wherein a thin bulge portion having a wide cross-sectional area is provided in a portion of the container main body that is close to the mouth / neck portion. The flexible container according to any one of claims 1 to 7, wherein the apparent viscosity of the contents contained in the container body is 2000 to 420,000 mPa · s.

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