JP3925607B2 - Plastic container - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a synthetic resin container that can be reduced in volume and configured to facilitate disposal after use.
[0002]
[Prior art]
Conventionally, used plastic containers such as tube containers and basket containers can be easily reduced in volume by flattening in the lateral direction (width direction) in order to facilitate disposal. I can do it.
[0003]
[Problems to be solved by the invention]
However, in these conventional plastic containers that can be reduced in volume, the body can be crushed relatively easily, but the shoulder (shoulder and bottom in the case of a bag container) can be easily pushed. Since it cannot be crushed, it has been difficult to reduce and deform the whole to a flat shape.
[0004]
In addition, even if it is crushed flat, the synthetic resin container has a form-returning property due to the elasticity of the material, so that the flat shape due to crushing is difficult to maintain, and a sufficient volume reduction state cannot be maintained. There was a problem.
[0005]
Therefore, the present invention was devised to solve the above-described problems in the prior art, and facilitates flat volume reduction by crushing when discarding a synthetic resin container that can be reduced in volume. It is an object to make sure that it is achieved and to make the disposal easy and smooth.
[0006]
[Means for Solving the Problems]
Among the present invention for solving the above technical problems, the means of the invention according to claim 1 is:
In a synthetic resin container,
A cylindrical mouth portion is integrally provided upright on the upper end of the cylindrical body portion through a tapered cylindrical shoulder portion having a circular planar shape, and the lower end portion of the body portion is flatly crushed and welded. It is a tube container which is molded into a seal part and can be easily reduced in volume by flattening the whole body part, and a transverse groove formed in a narrow groove shape is provided around the body part. The height of the upper end portion of the trunk portion above the lateral groove is set to approximately ½ of the diameter of the upper end portion of the trunk portion along the crushing direction.
[0007]
Since the height of the upper end portion of the trunk portion above the lateral groove is set to about ½ of the diameter of the upper end portion of the trunk portion along the crushing direction, when the barrel portion of the container is crushed from the front and rear, the upper end portion of the trunk portion is Bending at the lateral groove, its front and rear parts become bowl-shaped and its both side parts are widened and inclined downward, and the deformation of the front and rear parts and both side parts of this upper part of the trunk part is inverted and deformed. Self-holds a flat deformation posture.
[0008]
Next, the entire portion above the lateral groove is folded by folding the lateral groove on either side of the front and rear sides, and the entire container is eliminated from the hook-like protruding portion, and the volume reduction state is sufficiently flat and compact.
[0009]
In addition, a mouth portion is provided at the upper end of the trunk portion via a shoulder portion, and the bottom portion of the trunk portion is formed by a flat welded seal portion to form a tube container, thereby pushing the bottom portion of the container flatly. Since it is a crushed seal part, the entire container can be brought into a flat volume-reducing state simply by matching the crushing direction of the upper end portion of the body part with the flat crushing direction of the seal part.
[0010]
In addition, in this tube container, most of the contents can be pushed out from the mouth by sure flattening by crushing the trunk and its self-holding ability, and further by folding the upper part. The remaining amount of contents can be greatly reduced.
[0011]
Here, by making the entire body portion thin enough to be able to be easily folded in the lateral groove, not only can the flattening of the body portion bend in the lateral groove can be achieved very easily, The amount of the synthetic resin material required for molding one container can be reduced, and thereby a great resource saving effect can be obtained.
[0012]
The lateral groove is not limited to the groove structure recessed toward the inside of the container, and may be a groove structure protruding toward the outside of the container.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show a first embodiment in which the present invention is applied to a tube container. The tube container 1a has a tapered cylindrical shoulder on the upper end of a cylindrical body portion 2 having a circular planar shape. A cylindrical mouth portion 4 is integrally provided upright through the portion 3, and the lower end of the body portion 2 is formed into a seal portion 6 which is flattened and welded.
[0014]
A predetermined position on the upper part of the body 2, that is, a length corresponding to approximately ½ of the body upper end diameter A1 along the container crushing direction from the periphery of the shoulder 3 (upper edge of the body 2). In this position, a lateral groove 5 that is recessed and molded into a narrow groove shape inward is provided.
[0015]
FIGS. 2-4 shows the crushing state of this tube container 1a, and when the trunk | drum 2 is crushed from front and back, the height H1 of the trunk | drum upper end part 2a above the horizontal groove 5 will become the trunk | drum upper end part. Since it is formed to have a length that is approximately ½ of the diameter A1, as shown in FIG. 3, the front and rear body upper end portions 2a are bent and displaced in a substantially bowl shape, and the front and rear body portions 2 are formed as horizontal groove 5 portions. Therefore, the front and rear body main parts 2b are so close that they are in close contact with each other, and are sufficiently flattened and deformed.
[0016]
Next, as shown in FIG. 4, the head portion 7 above the horizontal groove 5 is folded in one of the front and rear directions in the horizontal groove 5, and the entire volume can be reduced to a sufficiently flat and compact volume.
[0017]
In addition, the tube container 1a may have an elliptical shape in the shoulder 3 thereof, and the height H1 of the upper end portion 2a in that case is substantially 1 of the upper end diameter A1 of the upper end portion in the crushing direction. In the case of / 2, that is, an ellipse, it is set to approximately ½ of the short axis direction diameter.
[0018]
5 and 6 show a second embodiment in which the present invention is applied to a dredge container. A dredge container 1b is formed on the upper end of a cylindrical body 2 having a bottom wall 8 by, for example, blow molding. A cylindrical mouth portion 4 is integrally connected via a tapered cylindrical shoulder portion 3.
[0019]
A predetermined position on the upper and lower parts of the body part 2, that is, a position below the peripheral edge of the shoulder part 3 by a length of about ½ of the upper end part diameter A1 along the crushing direction, and the bottom wall 8 From the lower surface, a lateral groove 5 is formed in a curved shape that is recessed inwardly into a narrow groove at a position that is approximately half the length of the lower end diameter A2 of the body portion along the crushing direction. Has been.
[0020]
Thus, the height H1 of the upper end portion 2a of the upper portion of the trunk portion from the upper lateral groove 5 and the height H2 of the lower end portion 2c of the lower portion of the trunk portion from the lower lateral groove 5 are the upper end of the trunk portion along the crushing direction. Since the part A1 and the body lower end part diameter A2 are formed to be approximately ½ length, when the body part 2 of the basket container 1b is crushed from the front and back, the front and rear body upper end parts 2a and The body lower end portion 2c is bent and displaced in a substantially bowl shape, and the front and rear body portions 2 are bent at right angles at the upper and lower horizontal grooves 5 portions, so that the front and back body main body portions 2b come closer to each other. , Flattened and deformed sufficiently flat.
[0021]
Next, as shown in FIG. 6, by folding the upper horizontal groove 5 to the upper head portion 7 and the lower horizontal groove 5 to the lower bottom portion 9 by folding each horizontal groove 5 in either the front-rear direction, The entire volume can be reduced to a sufficiently flat and compact volume.
[0022]
The bag container 1b may have a shape of an appropriate shape such as an ellipse or a square as well as a circular shape of the shoulder 3 thereof.
[0023]
7 to 9 show a third embodiment in which the present invention is applied to a cup-shaped container. The cup-shaped container 1c has an upper end of a cylindrical body portion 2 having a bottom wall 8 around the periphery. This is configured as an opening 10 provided with a portion 11.
[0024]
The configuration, position setting, and crushing form of the upper and lower horizontal grooves 5 in the third embodiment are the same as in the second embodiment.
[0025]
FIGS. 10 and 11 show a fourth embodiment showing another form of the cup-shaped container. This cup-shaped container 1c has a lateral groove 5 similar to that of the third embodiment only at the lower portion of the body portion 2. FIG. Is provided.
[0026]
In the crushing process of the cup-shaped container 1c, as shown in FIG. 11, the upper end opening 10 including the flange portion 11 is flattened and deformed together with the trunk main portion 2b, and the front and rear trunk lower end portions 2c are deformed. Bends and displaces in a reverse saddle shape
[0027]
In addition, the groove structure of the lateral groove 5 having a narrow groove shape is not limited to a semicircular arc shape, and may be U-shaped or V-shaped.
[0028]
【The invention's effect】
Since the present invention has the above-described configuration, the following effects can be obtained. Since the height of the upper end of the upper portion of the body portion from the lateral groove is set to approximately ½ of the diameter of the upper end portion of the body portion along the crushing direction, when the body portion of the container is crushed from the front and rear, the upper ends of the front and rear body portions The portions are bent and displaced in a generally bowl shape, and the front and rear body portions are bent at right angles at the lateral groove portions, so that the front and rear body main portions approach each other as they come into close contact with each other, and are sufficiently flattened and deformed.
[0029]
And by folding the head part above the horizontal groove in either the front or back direction in the horizontal groove and folding it, the entire volume can be reduced sufficiently flat and compact, and the flat volume reduction shape is ensured. Therefore, the disposal of the synthetic resin container can be achieved suitably and smoothly.
[0030]
In addition, when the container is a tube container, most of the contents can be pushed out from the mouth by reliable flattening by crushing the body and its self-holding ability, and further by folding the head part. The remaining amount of contents can be greatly reduced.
[Brief description of the drawings]
FIG. 1 is an overall perspective view showing a first embodiment of the present invention.
FIG. 2 is an overall perspective view showing a crushed state of the embodiment shown in FIG. 1;
FIG. 3 is an overall side view showing a crushed state of the embodiment shown in FIG. 1;
4 is an overall side view showing the head part in a bent state in the embodiment shown in FIG. 1; FIG.
FIG. 5 is an overall side view showing a second embodiment of the present invention.
6 is an overall side view showing a bent state of the head portion and the bottom portion of the embodiment shown in FIG. 5. FIG.
FIG. 7 is an overall perspective view showing a third embodiment of the present invention.
8 is an overall perspective view showing a crushed state of the embodiment shown in FIG. 7; FIG.
9 is an overall side view showing a crushed state of the embodiment shown in FIG. 7; FIG.
FIG. 10 is an overall perspective view showing a fourth embodiment of the present invention.
11 is an overall perspective view showing a crushed state of the embodiment shown in FIG.
[Explanation of symbols]
1a; tube container 1b; jar container 1c; cup-shaped container 2; trunk part 2a; trunk upper part 2b; trunk main part 2c; trunk lower part 3; shoulder part 4; mouth part 5; 7; head part 8; bottom wall 9; bottom part 10; opening 11; ridge A1; trunk upper end diameter A2; trunk lower end diameter H1; trunk upper end part height H2; height

Claims (1)

A cylindrical mouth portion (4) is integrally provided upright on the upper end of the cylindrical body portion (2) through a tapered cylindrical shoulder portion (3) having a circular planar shape , and the body portion ( 2) a lower end formed into the seal portion was welded crush flat push (6) of the barrel (2) the whole, a tubular container that is easily volume reduction can crush flat push,
A lateral groove (5) shaped like a narrow groove is provided around the upper portion of the body part (2), and the height (H1) of the upper end part (2a) of the upper body part from the lateral groove (5) is A synthetic resin container which is set to approximately ½ of the upper end diameter (A1) of the trunk portion along the crushing direction.

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