JPH05254550A - Plastic bottle with handle - Google Patents

Abstract

PURPOSE:To obtain a strong plastic bottle with a handle by providing reinforcements on part of the upper shell or around the whole circumference of a bottle body. CONSTITUTION:A plastic bottle has a handle 3 which is attached on a handle mounting recessed part 2 formed on the upper shell of a bottle body 1. Reinforcing plate mounting parts 8 with grooves 7 are formed on part of the upper shell or around the whole circumference of the bottle body 1. Reinforcing plates 4 with two or more through-holes 5 are fitted in the grooves 7 and the through- holes 5 are fitted on wall parts 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plastic bottle with a handle, and more particularly to a plastic bottle having a handle formed separately from the bottle body in a recess formed in the upper wall surface of the bottle body.

[0002]

2. Description of the Related Art When a plastic bottle becomes large, it is not easy to handle it for transportation and taking out contents. Therefore, the handle formed integrally is used, for example, for detergent. However, in the case of molding with a polyester resin such as polyethylene terephthalate, it is difficult to form the handle integrally with the bottle main body, so that a concave portion is formed on the upper wall surface of the bottle main body, and the bottle main body is not formed in this concave portion. A handle formed separately is attached.

[0003]

However, since the wall surface of the recess formed for attaching the handle is recessed inward, the bulging distance from the parison during blow molding is short and the draw ratio is low. Although it is thickly formed, it has a small effect of stretching and orientation, and is easily deformed by external force, internal pressure, heat or the like. Therefore, there are drawbacks such that indefinite deformation is likely to occur due to the degree of orientation and the difference in shape from the other parts of the bottle body, the entire bottle is tilted, and the recessed portion is distorted to create a gap in the handle mounting portion.

Therefore, an object of the present invention is to provide an extremely robust plastic bottle with a handle by reinforcing a part or the entire circumference of the upper wall surface of the bottle body.

[0005]

In order to achieve the above-mentioned object, the present invention provides a plastic bottle having a handle mounting recess in the upper wall surface of the bottle body, and the handle being mounted in the recess. A reinforcing plate mounting portion having a groove is formed over a part or the whole circumference, and a reinforcing plate having a plurality of through holes is fitted into the groove, and the through hole is fitted into a wall portion defined by the groove. It is characterized by being mounted and attached.

[0006]

[Operation] With the above-mentioned configuration, the upper wall surface of the bottle body is reinforced by the attachment of the reinforcing plate, whereby the entire bottle can be strengthened.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the plastic bottle of the present invention. FIG. 1 is a partially cutaway front view of a main part, FIG. 2 is a sectional view taken along line II-II of FIG. 1, FIG. 3 and FIG. 4 shows another embodiment, and FIG. 3 is a partially cutaway front view of the main part,
FIG. 4 is a perspective view of the handle.

First, FIGS. 1 and 2 show an embodiment of a plastic bottle of the present invention. For example, a bottle body 1 molded of polyethylene terephthalate resin or the like.
A recess 2 for attaching a handle is formed on the upper wall surface of the
In addition, a handle 3 having a substantially bow-shaped outer surface is formed separately from the bottle body 1 by injection molding using a synthetic resin such as polyethylene or polypropylene, and the outer surface is substantially flush with the wall surface of the bottle body 1. Installed.

The handle 3 is set in advance in, for example, a blow molding die of the bottle body 1, and the upper and lower fixing portions 3 are provided.
Almost all of a and 3b are attached to the recess 2 by being locked by upper and lower locking portions 1a and 1b which are formed by being wrapped by the wall surface of the bottle body 1.

A reinforcing plate 4 is attached to the wall surface on the opposite side of the handle attaching recess 2. This reinforcing plate 4
Is formed of, for example, a synthetic resin such as polyethylene terephthalate which is the same as that of the bottle body 1, or a metal plate or a cardboard so as to be curved substantially corresponding to the wall surface of the bottle body 1, and the whole of the rectangle having substantially the same height as the recess 2. It has a shape and is formed in a lattice shape having a plurality of rectangular through holes 5, and has locking portions 6 that are bent toward the inside, that is, the bottle body 1 side, at the four edges.

On the other hand, on the upper wall surface of the bottle body 1 to which the reinforcing plate 4 is attached, the reinforcing plate mounting portion 8 having the same lattice-shaped groove 7 is formed with the same depth as the thickness of the reinforcing plate 4, and A wall portion 1 in which a locking groove 9 is formed in the periphery, a reinforcing plate 4 is fitted in the groove 7 and a through hole 5 is defined by the groove 7.
It is mounted on the bottle main body 1 so as to be flush with the bottle main body 1 by fitting the locking portion 6 into the locking groove 9.

The reinforcing plate 4 can be attached either directly to the bottle body 1 or by fitting it to the bottle body 1 with a hot-melt type adhesive interposed, for example, in advance in the blow molding die of the bottle body 1. It is attached by means such as setting.

According to the present embodiment, since the reinforcing plate 4 attached to the wall surface of the bottle body 1 fixes and reinforces the wall surface, the difference in draw ratio between the wall surface of the concave portion 2 and the wall surface of the bottle body 1 and By the indefinite deformation due to the unbalance due to the difference in shape, there is no inconvenience such that the whole bottle is tilted or the concave portion 2 is distorted and a gap is formed in the attaching portion of the handle 3, and in particular, the through hole 5 has a bottle body 1 Since the wall portion 10 is fitted, the reinforcement against the distortion of the wall surface is further strengthened.

Further, the reinforcing plate 4 is attached by fitting the through hole 5 and the wall portion 10 of the bottle body 1 and fitting the locking portions 6 formed in the four directions into the locking groove 9 formed in the bottle body 1. Since it is carried out by inserting it, the attachment is more reliable and strong, and the effect of suppressing the expansion and contraction of the wall surface of the bottle body 1 and preventing the irregular deformation of the bottle is remarkable, but the through hole 5 and the bottle When it can be attached only by fitting the wall portion 10 of the main body 1, the locking portion 6 and the locking groove 9 are provided.
Is not always necessary. The formation of the through hole 5 is
There is also an effect of saving the raw material of the reinforcing plate 4. Further, in this embodiment, since the reinforcing plate 4 is flush with the wall surface of the bottle body 1 when it is attached to the bottle body 1, it does not take up extra space for transportation, storage, etc. None preferred. However, the wall portion 10 may protrude from the through hole 5 or may be recessed.

Since the height of the reinforcing plate 4 is substantially the same as the height of the concave portion 2, the concave portion 2 and the other wall surfaces of the bottle body 1 are balanced to prevent irregular deformation of the bottle. However, the width is usually not less than the width of the handle, and the reinforcing effect can be obtained. Further, in the present embodiment, the reinforcing plate 4 is attached to the opposite side of the concave portion 2, but it may be attached over the entire circumference of the wall surface of the concave portion 2 which is particularly deformable or the upper wall surface of the bottle body 1, or the entire peripheral surface. When mounted over the entire length, the tightening force can improve the deformation prevention effect, especially against internal pressure.
The mounting position of the reinforcing plate 4 may be appropriately selected depending on the shape and size of the bottle.

Furthermore, the handle 3 according to the above embodiment is
The side surface is substantially arcuate, and upper and lower fixing portions 3a and 3b are formed at both ends of the fixing portion 3 so as to expand toward the tip.
It is configured to be mounted in the recess 2 by locking substantially the entire a and 3b with the upper and lower locking portions 1a and 1b that are formed by being wrapped by the wall surface of the bottle body 1, and have a wide contact area and are reliably mounted. It is strong against impact because it is fixed, and the fixing part 3
Since the shapes of a and 3b are simple, not only is the manufacturing easy and economical, but also accurate molding is possible and no gap is formed between the upper and lower engaging portions 1a and 1b.

Next, FIGS. 3 and 4 show another embodiment of the present invention. In this embodiment, the overall structure is substantially the same as that of the above embodiment, but the upper and lower fixing portions 3a of the handle 3 are The outer surface of 3b is provided with a locking surface 11 having a large number of triangular wave-shaped cross sections extending in the width direction, and at the tip of the fixed portion 3b,
A locking projection 12 protruding in the width direction is provided so as to project the locking surface 1.
1 engages with an engaging surface 13 similar to the engaging surface 11 of the handle 3 formed inside the engaging portions 1a and 1b of the bottle body 1, and the engaging protrusion 12 of the lower engaging portion 1b. Fits in a hole that is molded inside.

In this embodiment, the handle 3 has a locking surface 11,
By the engagement of 13 and the fitting of the locking projection 12 and the hole,
Securely and firmly installed. Although the handle 3 of this embodiment is provided with both the locking surface 11 and the locking projection 12, it goes without saying that the attachment becomes strong even if either one is provided. In addition, although the through hole 5 formed in the reinforcing plate 4 is rectangular in the above-mentioned embodiment, it is not limited to this, and it is needless to say that it may have another shape such as a round shape, a triangular shape, and a horizontally long linear shape.

[0019]

According to the present invention, in a plastic bottle in which a handle mounting recess is formed on the upper wall surface of the bottle body and the handle is mounted in the recess, a reinforcing plate is provided over a part or the entire circumference of the upper wall surface. Since it is attached and reinforced, the entire bottle may tilt due to indefinite deformation due to unbalance due to difference in draw ratio and shape difference caused by the recess for attaching the handle, or the recess may be distorted and a gap may be created in the handle attachment part. It is possible to provide a robust plastic bottle without.

Further, since the reinforcing plate has a plurality of through holes and the wall portion of the bottle main body is fitted into the through holes, the reinforcing effect against wall distortion and the like is more remarkable. The reinforcing plate can be attached only by fitting the through hole and the wall. Moreover, the through holes can also save the raw material of the reinforcing plate.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of an essential part showing an embodiment of a plastic bottle of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a partially cutaway front view of a main part showing another embodiment.

FIG. 4 is a perspective view of the same handle.

[Explanation of symbols]

1 ... Bottle main body, 2 ... Recessed portion, 3 ... Handle, 4 ... Reinforcing plate, 5
... Through hole, 7 ... Groove, 8 ... Reinforcing plate mounting portion, 10 ... Wall portion

Claims (1)

[Claims] 1. A plastic bottle having a handle mounting recess formed in an upper wall surface of a bottle body, and a handle mounted in the recess, and a reinforcing plate mounting portion having a groove over a part or the entire circumference of the upper wall surface. A plastic plate with a handle, wherein a reinforcing plate having a plurality of through holes formed therein is fitted into the groove and the through hole is fitted and attached to a wall portion defined by the groove.