JP2011255950A - Tubular container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a tubular container whose contents are effectively used to the end by squeezing a portion in the vicinity of the shoulder of a barrel into a desired shape, thereby reducing the remaining contents in the tube.SOLUTION: The tubular container includes the cylindrical barrel 2, a cylindrical mouth 4 whose diameter is smaller than that of the barrel 2, and the shoulder 3 between the barrel 2 and the mouth 4. The barrel 2 includes a body barrel 7 at the side of the bottom end 6 and a shoulder connection portion 5 at the side of the shoulder 3. The body barrel 7 and the shoulder connection portion 5 are formed concentrically, the shoulder connection portion 5 has a diameter smaller than that of the body barrel 7, and the shoulder connection portion 5 and the body barrel 7 are connected to each other via a step 8.

Description

  The present invention relates to a tube container filled with food, a toothpaste paste, cosmetics, drugs and other viscous contents.

  The tube container pushes out the contents while folding and deforming the body of the container, but the mouth is strong because the cap is attached, and the shoulder is folded due to the divergent shape connecting the small diameter mouth and the large diameter body Since it was difficult, the content beyond the shoulder portion could not be completely pushed out at the end of extrusion, causing a problem of remaining.

As a technique for solving this point, in Patent Document 1, the body part directly below the shoulder part is thin and easy to fold. However, since the strength of the thin part is low, the body part is deformed and closed before the body part. There is a risk that objects cannot be pushed out, and thin-walled parts may be damaged.
In Patent Document 2, the folding position is guided by using a circumferential groove formed around the body part as a trigger, but both side edges that become the left and right parts of the body part when folded are the three-dimensional shape of the circumferential groove. This makes it difficult to fold.
In Patent Document 3, in addition to the circumferential groove, a symmetrical inclined groove that induces folding just under the shoulder and a longitudinal groove that induces folding of the left and right side edges of the trunk are provided. Must match the back.

JP 2005-350141 A JP 2001-219947 A JP 2001-219948 A

  For this reason, the tube container that can squeeze the portion near the shoulder of the torso into a correct shape, reduce the remaining amount of the contents in the tube, and use the contents effectively to the end The challenge is to develop

  Corresponding to this purpose, the tube container of the present invention has a cylindrical body part, a cylindrical mouth part having a smaller diameter than the body part, and a shoulder part between the body part and the mouth part, The trunk includes a main body barrel on the rear end side and a shoulder coupling portion on the shoulder side, the main body trunk and the shoulder coupling portion are formed concentrically, and the shoulder coupling portion is formed on the body trunk. The shoulder connecting portion and the main body trunk portion are connected through a step having a smaller diameter than the portion.

  Further, the tube container of the present invention has a cylindrical body portion, a cylindrical mouth portion having a smaller diameter than the body portion, and a shoulder portion between the body portion and the mouth portion. An end-side body trunk portion and a shoulder-side shoulder coupling portion; the body trunk portion and the shoulder coupling portion are formed concentrically; and the shoulder coupling portion is smaller in diameter than the body trunk portion. The shoulder connecting portion and the main body trunk portion are connected through a step, and the outer peripheral surface of the shoulder connecting portion has a height equal to or lower than the height of the step and is linearly formed in the center line direction. The projected portion is formed in an intermittent manner with an interval around the center line of the shoulder connecting portion.

  In the invention described in claim 1, the shoulder connecting portion in the vicinity of the shoulder portion of the body portion of the tube container is formed to have a smaller diameter than the body body portion, and the shoulder connecting portion is the body body portion with the stepped portion as a boundary. Therefore, when pushing out the remaining contents, pressing the shoulder connecting part with your fingers will cause the shoulder connecting part to be a deformed guide part, so the shoulder connecting part will easily collapse and the shoulder part The remaining contents inside the can be easily pushed out.

  In the invention described in claim 2, the protruding portion having high strength protrudes from the surface of the shoulder connecting portion, but this protruding portion does not form the shoulder connecting portion all around the center line, It is formed intermittently at intervals. For this reason, a difference in strength between the protruding portion and the intermittent portion appears greatly, and the shoulder connecting portion can be crushed using the intermittent portion where the protruding portion is not provided as a guide. Moreover, since the part in which the protrusion part is provided has high rigidity, the shape of the crushed part can be made into the well-formed shape.

  In the invention described in claim 3, the protruding portion guides the crushing deformation of the shoulder connecting portion satisfactorily, and the protruding portion of the shoulder connecting portion is formed at a low height equal to or lower than the height of the step. The part does not become an obstacle to packing.

  In the invention described in claim 4, the shoulder connecting portion can be easily deformed for crushing by using the step between the main body trunk portion and the shoulder connecting portion as a deformation guide portion, and the shoulder connecting portion has a center line. A straight protrusion is provided in a direction parallel to the shoulder, so that the shoulder connecting portion can be reliably crushed and the remaining contents can be pushed out to the end.

Front view of the tube container of the present invention Explanatory drawing of the crushed tube container Front view of a tube container according to another embodiment of the present invention Front view of a tube container according to another embodiment of the present invention Part A enlarged view in FIG.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a tube container. The tube container 1 has a trunk portion 2, and a mouth portion 4 is attached to and communicated with the tip of the trunk portion 2 via a shoulder portion 3.
The trunk | drum 2 is a part which makes a cylinder shape and is filled with the contents, for example, contents, such as mustard, wasabi, a cream, and a chemical | medical agent, inside.

  The mouth part 4 has a short cylindrical shape and has a function as a nozzle for sending the contents to the outside and a function as a cap mounting part for fitting the cap. A cap is provided on the outer peripheral surface of the mouth part 4. In some cases, a friction surface to be attached by a frictional force is formed, or a screw for screwing a cap and an undercut for causing a click are formed.

  The shoulder portion 3 is a portion that has a conical cylindrical shape and communicates the upper mouth portion and the lower trunk portion 2 having different diameters.

  The body part 2 is configured by a shoulder connecting part 5 on the shoulder part 3 side and a main body body part 7 on the rear end 6 side communicating in a concentric manner and integrally connected.

The shoulder connecting portion 5 is connected to the shoulder portion 3, and the rear end 6 of the body trunk portion 7 is closed after filling the contents. The shoulder connecting portion 5 is configured to be slightly smaller in diameter than the main body trunk portion 7, and therefore, a step 8 having a width W is formed between the shoulder connecting portion 5 and the main body trunk portion 7.
The effect | action of the tube container 1 comprised in this way is as follows.

  When the content has been pushed out and the remaining content is almost present only at the shoulder 3 and the mouth 4, as shown in FIG. 2, the shoulder connecting portion 5 of the trunk portion 2 is sandwiched with fingers from both front and rear sides. Press Since there is a step 8 having a discontinuous outer shape at the lower end of the shoulder connecting portion 5, the shoulder connecting portion 5 is flattened by this step 8, and further, the adjacent portion to the shoulder 3 is pushed up to the back side of the shoulder 3. Thus, the contents remaining on the back side of the shoulder 3 can be pushed out to the mouth 4.

  Particularly important points in the tube container 1 of the present invention are that a step 8 is provided between the main body barrel 7 and the shoulder connecting portion 5 of the barrel 2, and the main body barrel 7 has a large diameter when the step is provided. The shoulder connecting portion 5 has a small diameter. Since the main body torso 7 is the part that is most easily gripped by the palm, this part has a large diameter and a large capacity, so that most of the contents can be pushed out easily, and the convenience of the tube container 1 is enhanced and the shoulder connecting part 5 is made small in volume, and when this portion is crushed with a finger, the backflow portion of the content to the main body barrel 7 is made small to avoid wasting the content.

  Further, by providing an annular step 8 between the body body 7 and the shoulder connecting portion 5 so that the body body 7 is circumscribed and the shoulder connection portion 5 is inscribed, the presence of the step 8 is triggered by crushing. The shoulder connecting portion 5 is smoothly deformed, the deformed shape is simply arranged, the contents are not bitten into the deformed portion and remain, and the contents in the shoulder connecting portion 5 are efficiently obtained. Can be delivered to the mouth 4.

Description of second and third embodiments

  FIG. 3 shows tube containers 1b and 1c according to the second and third embodiments of the present invention. That is, the tube containers 1 b and 1 c form a protruding portion 11 that protrudes from the outer peripheral surface of the shoulder connecting portion 5. The protruding portion 11 is formed in an intermittent manner with an intermittent portion 13 around the center line 12 of the shoulder connecting portion 5. The protrusion 11 has a height equal to or less than the width W of the step 8. That is, even when the protruding portion 11 is formed, the protruding portion 11 does not come out of the extended cylindrical surface of the main body barrel portion 7, and the height of the adjacent tube container 1 can be increased even when a large number of tube containers 1 are arranged. It can avoid that the protrusion part 11 interferes. The shape of the protrusion can be a straight line, a curve, or a dot, but what is important here is a belt-like shape in which these protrusions circulate around the center line 12 on the surface of the shoulder connecting portion 5. It is a point which is formed in the intermittent form which provided the intermittent part 13 in the middle instead of forming. In the case where the belt is formed in a belt shape that goes around the shoulder connecting portion 5, when the shoulder connecting portion 5 is crushed by sandwiching the shoulder connecting portion 5 from the front and rear direction, the belt-shaped protruding portions 11 are crushed and deformed at the left and right portions of the collapsed shoulder connecting portion 5. However, if the intermittent portion 13 of the present invention is present, the flat portion of the shoulder connecting portion 5 can be deformed with the intermittent portion 13 as a main deformable portion. To do.

  The protruding portion 11 of the shoulder connecting portion 5 of the tube container 1b shown in FIG. 3A is an example formed in a dot shape, and the protruding portion 11 of the shoulder connecting portion 5 of the tube container 1c shown in FIG. Is an example of being formed in a straight line inclined to the center line 12 and arranged along the curved surface of the shoulder connecting portion 5, and the protruding portion of the shoulder connecting portion 5 of the tube container 1d shown in FIGS. Reference numeral 11 denotes an example formed in a straight line parallel to the center line 12.

Description of the fourth embodiment

  4 to 5 show a tube container 1d according to a fourth embodiment of the present invention. The tube container 1 d is configured as a linear protrusion 11 that is arranged in parallel with the center line 12 with an intermittent part 13 around the center line 12 of the body part 2 as the protrusion 11 formed on the shoulder connection part 5. ing.

  Further, the mouth portion 4 of the tube container 1d is formed with a click generating undercut for generating a click when a cap (not shown) is mounted and a cap screw for mounting the cap. .

The effect | action of the tube container 1d comprised in this way is as follows.
When the content has been pushed out and the remaining content is almost present only in the shoulder 3 and the mouth 4, the shoulder connecting portion 5 of the trunk 2 is sandwiched and pushed from both the front and back. Since there is a step 8 having a discontinuous outer shape at the lower end of the shoulder connecting portion 5, the shoulder connecting portion 5 is flattened by this step 8, and further, the adjacent portion to the shoulder 3 is pushed up to the back side of the shoulder 3. Accordingly, the contents remaining on the back side of the shoulder portion 3 can be pushed out to the mouth portion 4. In the crushing operation of the shoulder connecting portion 5, the protruding portion 11 is parallel to the center line 12 and guides the deformation of the shoulder connecting portion 5. Make it simple and well-formed. Accordingly, almost all of the contents in the shoulder connecting portion 5 are fed into the mouth portion 4 without being bitten by the shoulder connecting portion 5 that has been crushed and remaining. Further, since the protruding portion 11 is formed in parallel to the center line 12 and does not go around the shoulder connecting portion 5, the protruding portion 11 does not give resistance to the crushing operation of the shoulder connecting portion 5. The protruding portion 11 may be formed on the inner surface of the shoulder connecting portion 5.

The tube container of the present invention can be suitably produced by a single layer or multilayer extrusion blow molding method using a known thermoplastic resin. According to the extrusion blow molding method, the wall thickness of the shoulder connecting portion and the body trunk portion can be made substantially the same, and the strength reduction of the shoulder connecting portion can be suppressed.
The width W of the stepped portion is preferably about the thickness of the trunk portion. If the level difference is less than half of the wall thickness, the effect of guiding the folding is thin, and if it exceeds twice, the left and right side edges are difficult to fold.
As described above, the rear end of the body portion is filled and flattened and sealed, and at this time, the shape front / rear surface of the tube container is defined. Since the pushing operation of the contents is performed based on this direction, the protruding portions for guiding the crushing deformation of the shoulder connecting portion are provided at least on the left and right side edges.
However, in the case of only a pair of left and right, it is necessary to align the front / rear side when the tube container is manufactured and when the contents are filled, so there are more protrusions, preferably 6-36 intermittently in the circumferential direction. (For example, in the second embodiment, twelve in six locations, and in the fourth embodiment, eighteen), good operability can be obtained without alignment between the time of manufacture and the time of filling. If a large number is provided beyond this range, the strength of the shoulder connecting portion becomes too high and it becomes difficult to crush.
As is apparent from the above description, according to the present invention, the portion near the shoulder portion of the trunk portion can be crushed into a correct shape, the remaining amount of the content in the tube is reduced, and the content is effectively made to the end. A tube container that can be used can be obtained.

DESCRIPTION OF SYMBOLS 1, 1b, 1c, 1d Tube container 2 trunk | drum 3 shoulder part 4 mouth part 5 shoulder connection part 6 rear end 7 main body trunk | drum 8 level | step difference 11 protrusion part 12 centerline 13 intermittent part

Claims (4)

  A cylindrical body portion, a cylindrical mouth portion having a smaller diameter than the body portion, and a shoulder portion between the body portion and the mouth portion; A shoulder connecting portion on the shoulder side, the main body trunk portion and the shoulder connecting portion are formed concentrically, and the shoulder connecting portion has a smaller diameter than the main body trunk portion, and the shoulder connecting portion The tube container characterized in that the main body body is connected through a step.   The tube container according to claim 1, wherein the protruding portion protruding from the outer peripheral surface and / or the inner peripheral surface of the shoulder connecting portion is formed in an intermittent manner with an intermittent portion around the center line.   The protruding portion formed on the shoulder connecting portion is a protruding portion protruding from the outer peripheral surface and having a height equal to or lower than the height of the step, and is formed in a linear shape, a curved shape, or a dot shape. The tube container according to claim 2.   A cylindrical body portion, a cylindrical mouth portion having a smaller diameter than the body portion, and a shoulder portion between the body portion and the mouth portion; A shoulder connecting portion on the shoulder side, the main body trunk portion and the shoulder connecting portion are formed concentrically, and the shoulder connecting portion has a smaller diameter than the main body trunk portion, and the shoulder connecting portion The body torso is connected via a step, and an outer peripheral surface of the shoulder connecting portion has a height that is equal to or lower than the height of the step, and a projecting portion that is linearly formed in the center line direction is the shoulder. A tube container characterized by being formed in an intermittent manner with an interval around the center line of the connecting portion.

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