JP4292018B2 - Plastic container - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a plastic container, and more particularly to a liquid container that is widely used from home use to industrial use, which is made of a plastic molded body for filling liquids such as various chemical solutions and fossil fuels. Most of these containers are disposable, and those that can be reduced in volume at the time of disposal are demanded from the needs of the times.
[0002]
[Prior art]
This is a container made of plastic molding for filling liquids such as various chemicals and fossil fuels. It is made of polymer material such as polyethylene resin, mainly mixed with soft material such as low density polyethylene. the use of a blow forming shape method or the like, and there is a container formed substantially in a rectangular parallelepiped shape.
[0003]
This type of container has been used in a very wide range from home use to industrial use, but on the other hand, when disposing of empty containers after use, there are various problems in storage place, handling, transportation, and collection as resource waste was there. Moreover, even if it is left as it is, it does not collapse naturally, which has caused the destruction of the natural environment.
[0004]
[Problems to be solved by the invention]
To recent solution to this problem, for example, Utility Model Registration No. 2604604 discloses, as seen in Japanese Patent 10-77045 Patent Publication, by providing the ribs or concave grooves in the body portion of the container, this part As a starting point, the former can be folded into a flattened state, and the latter can be folded into a vertically collapsed state.
[ 0005 ]
However, because of the rigidity possessed by the container constituent materials themselves , these materials were restored to their original shape during crushing, storage or storage, and the volume reduction effect was not perfect. .
[ 0006 ]
The present invention has been made to solve such problems, and when discarded after use, it has been completely crushed without returning to its original shape even if stored or left after being crushed. offers can be maintained, and a stackable achieved complete volume reduction of empty containers, storage, handling, transport, plastic containers capable of obtaining remarkable effects on the efficiency improvement of the recovery such as recyclable waste To do.
[ 0007 ]
[Means for Solving the Problems]
The present invention has a mouth and a handle on the top of the container body, Ru plastic container der substantially rectangular parallelepiped overall shape. The container mainly composed of polyolefins such as high density polyethylene or polypropylene, to which the like a proper flexibility and drop strength known blow forming shapes method a mixture of an appropriate amount of a low density soft material such as polyethylene to increase the Molded.
[ 0008 ]
This component material preferably has a flexural modulus (ASTM D790, measuring temperature 23 ° C.) of 700 to 1800 Mpa, that is, if it is less than 700 Mpa, it can be easily restored to its original shape after deformation, and if it exceeds 1800 Mpa It becomes difficult to crush the container by hand. In addition, in the above configuration, in consideration of normal deformation maintainability, deformation workability, and maintainability after deformation, the average thickness of the container is set to 1 mm or less, preferably 0.8 mm or less.
[0009]
The body part of the plastic container of the present invention is curved in an arc shape so as to project outward in the lateral direction (circumferential direction), and the cross section of the body part is maximized on the front and back parts of the container. Deformation consisting of a convex rib extending in a lateral direction curved in an arc shape in the longitudinal direction of the front portion and the back portion of the central portion , and a stepped rib curved in an arc shape in the longitudinal direction of the left side surface and the right side surface of the body portion A maintenance unit is provided. If the body of the container is curved in an arc shape so as to project not only in the horizontal direction (circumferential direction) but also in the vertical direction (height direction), the deformation workability and the shape after deformation More preferable in terms of stability.
[ 0010 ]
The deformation maintaining portion such as the convex rib also serves to reinforce the container when it is filled with a liquid, so that the entire container can be formed into a thin wall and can be reduced in weight. Furthermore, after use, when the container is placed sideways and crushed inward by hand, the above-described arc-shaped curved portion projecting outward, the convex rib, concave rib, stepped rib, etc. forming the arc-shaped curved surface are maintained. The portion is pushed inwardly, so that the restoring stress when the container is crushed can be completely canceled and the volume can be reduced completely. Furthermore, since the folded center part is inclined so as to have the maximum cross-section, it can be stacked with the containers in a crushed state, improving storage, handling, transportation, and collection as resource waste. A remarkable effect can be obtained.
[ 0011 ]
By providing a deformation maintaining part such as a convex rib in the body part of the container main body , the curved shape is reversed, so that the container after being crushed is prevented from being restored to the original shape. The plastic container of the present invention can be handled or transported with a handle provided at the upper part of the container body, and can be filled or poured out from the mouth opening at the upper part like a normal container. It can be crushed sideways after use, reduced in volume and discarded.
[ 0012 ]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of a plastic container according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of a container 1 according to the present invention, and FIG. 2 is a partially cutaway front view of the container.
[ 0013 ]
A handle 3 for carrying a mouth 2 及 beauty container with cap for exiting the liquid injection or Note provided in the upper portion of the container body. Almost centerbody vertical direction (height direction) and the transverse direction (circumferential direction) is curved in an arc shape so as to protrude outward respectively, further cross-section of the body member of the container main body is maximum deformation holding section 4 (4a, 4b) extending in the transverse direction in the front portion and rear portion of the part of the provided is formed with the barrel body portion tapered respectively towards more upward and downward thereto. That is, the front and back part of the body is provided with a convex rib 4a which is curved in an arc shape in the longitudinal direction, stepped rib 4b curved in an arc shape in the longitudinal direction on the left and right sides of the body portion Is provided.
[0014]
In the present invention, the convex ribs 4a that are curved in an arc shape are provided on the front part and the rear part of the body part , and further, not only in the approximate center, but also in a position shifted in the upper and lower end direction as in the embodiment. It is preferable to provide a deformation maintaining portion such as the concave rib 4c in order to satisfy the normal reinforcing rib effect and the deformation maintaining effect at the time of disposal.
[ 0015 ]
As shown in FIG. 5, the plastic container 1 placed next to the portion of the press crush the aforementioned curved in an arc shape that protrudes outward part component and the convex rib 4a by hand is pushed in a state inverted to the inside, Thereby, it becomes possible to completely cancel the restoring stress when the container is crushed, and the volume can be reduced completely. Furthermore, since the folded center part is inclined so as to have the maximum cross section, the containers can be stacked in a state where they are crushed, and can be stacked without being scattered. Workability can also be improved in handling.
[ 0016 ]
【The invention's effect】
The present invention as described above, the mouth portion and the handle for the output liquid Note is provided in an upper portion of the container body, tension outwardly respective torso portions laterally of the container body (circumferential direction) for filling the liquid It is a plastic container with a substantially rectangular parallelepiped shape that is curved in an arc shape so that it is mainly composed of high-density polyethylene, and this is mixed with soft materials such as low-density polyethylene in order to improve appropriate flexibility and drop strength. is obtained by molding in a blow forming form method, it can be efficiently produced by using a mold of normal for simple structure.
[ 0017 ]
By the curved shape provided with a deformation holding section such as convex rib on the body portion of the container body is to be reversed, thereby preventing restoration of the original shape of the container after crushing, when the container used Since the reinforcing effect can be obtained, the molded container can be thinned, and the weight can be reduced and the manufacturing cost can be reduced.
[0018]
After use, the container body can be turned sideways and easily crushed by hand, and volume reduction at the time of disposal can be achieved. After crushing Furthermore, since restoration of the original shape is fully pressing, and can be stacked in a state of fitting the container crushed together, easy to store and handle in offices or the like to handle a large amount Work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is an external perspective view of a plastic container.
FIG. 2 is a partially cutaway front view of a plastic container.
FIG. 3 is a partially cutaway side view of a plastic container.
FIG. 4 is a partially broken plan view of a plastic container as viewed from above.
FIG. 5 is a perspective view of a plastic container showing a completely crushed state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Container body 2 Mouth part 3 Handle 4 Deformation maintenance part 4a Convex rib 4b Stepped rib 4c Concave rib

Claims (3)

In a plastic container that has a mouth and handle at the top of the container body, and the overall shape is a substantially rectangular parallelepiped shape,
The body part of the container body is curved in an arc shape so as to project outward in the lateral direction (circumferential direction), and the body part is crossed so that it does not restore to its original shape when crushed in the lateral direction. Convex ribs extending in the transverse direction that are curved in an arc shape in the longitudinal direction of the front part and the rear part of the central part where the surface is maximum, and a step curved in an arc shape in the longitudinal direction of the left side surface and the right side surface of the body part A plastic container characterized in that a deformation maintaining portion comprising a rib is provided.   The plastic container is mainly composed of polyolefin such as high-density polyethylene or polypropylene, and is mixed with an appropriate amount of a soft material such as low-density polyethylene. The plastic container according to claim 1, wherein the plastic container is formed by blow molding using a mixed material in the range of (1) and has a thin-walled structure due to a reinforcing effect by the deformation maintaining portion. The deformation holding section extending transversely to claim 1 or 2, plastic container, wherein the provided at least two or more places above and below the front portion and rear portion of the body around the body portion.

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