JP3023253B2 - Container with handle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container with a handle.

[0002]

2. Description of the Related Art In a container with a handle, Japanese Utility Model Publication No. 3-84738 and Japanese Utility Model Publication No. 3-1533 have disclosed means for integrally providing a handle formed separately from the container.
For example, there is a technique disclosed in Japanese Patent Application Laid-open No. 9-No. Each of these handles has a container body wound around a band portion integral with the handle, and the step of winding and stopping is provided independently after the container is formed and attached.

[0003] In such a container with a handle, a separate process for attaching the handle is required, which increases the manufacturing cost.

[0004]

Therefore, a method of insert-molding a previously formed handle into a blow-molded container is considered. In this method, a handle can be provided simultaneously with the molding of the container, but the container body blown into the handle must be firmly engaged.

For this reason, a method of embedding a protrusion formed on a back plate of a handle having a vertically long grip portion into a side peripheral portion of a container body has been adopted. In blow molding, FIG.
FIG. 9 shows a preform 1 having a bottom shape in a test tube shape as shown in FIG.
The preform 1 is inserted into a mold 2 as shown in FIG. 1 and blown from the mouth of the preform 1 to expand the preform 1 and stretched in the vertical and horizontal directions to obtain a container as shown in FIG.

At this time, before the preform 1 is inserted into the mold, if the handle 3 is previously inserted into the mold as shown by reference numeral 3 in FIG. The preform bites into the formed protrusion, and the container body and the handle are integrally engaged.

[0007] This relationship is the same in the case of continuous extrusion using a parison 4 without a bottom as shown in FIG. 11 and in the case of a manufacturing method in which the parison 4 is formed with a mold 5 as shown in FIG. is there.

In the technique of embedding the handle protrusion into the container body at the same time as molding, a preform, a parison, and the like (hereinafter referred to as molding material) are extended downward from an upper opening, and are denoted by reference numeral 1a in FIG. As shown, the handle bites into the engaging projection 3a.

In this case, the handle is more firmly fixed to the container body as the biting amount of the projection 3a is larger. Here, as shown in FIG. 13, the handle 3 before the improvement has two protrusions 3a cut and raised from the back plate, formed in a row at a position facing the grip portion of the handle.

Referring to FIG. 7, which is a cross-sectional view of the container body cut into a circle at the protrusion 3a and looking up the mouth from the bottom, a handle is provided in a range excluding the radius of the mouth from the radius of the container. It is necessary to design to provide. At this time, in the handle 3 before the improvement, the grip portion of the handle is prevented from protruding to the outside of the container, and the distance l1 between the grip portion, which is a grip margin, and the back plate is set as small as possible. Take large, and
A sufficient depth l2 for the projection 3a to meet the condition of strong engagement.
Can not take. To further increase l1, it is necessary to protrude l2 toward the mouth 1b. This impairs the function of the container and must be avoided.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a container with a handle which can secure the strength of engagement with the container body by obtaining a sufficient depth of the projection while preventing the handle from going outside the outer periphery of the container body. Is to provide.

[0012]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is directed to a container body having a mouth formed by opening a projection formed on a back plate of a handle having a vertically long grip. A container with a handle integrally formed by being embedded in the side peripheral portion has the following configuration.

The protruding portion is formed from a pair of protruding portions which stand up from the back plate of the handle and are arranged at intervals along the side peripheral portion of the container body. Here, it is desirable to provide two pairs of projections vertically, in order to increase the engagement strength.

[0014]

When the handle is attached to the container by insert molding, the projection is located at a position deviated to the left and right from the peripheral edge of the mouth nearest to the center of the mouth. For this reason, it is possible to reduce the distance between the back plate of the handle and the periphery of the mouth.

[0015]

5 and 6, which illustrate a container with a handle according to the present invention together with a handle 6. FIG. 1 is a perspective view of the handle 6, and FIG. 2 is a top view of the handle, FIG. In FIGS. 4 and 5, the handle has a vertically elongated ring shape with a grip portion for gripping and a back plate mounted on the container side. A pair of projections 7R and 7L and a pair of projections 8R and 8L according to the present invention are formed on the back plate 6-1 of the handle so as to be divided right and left around the gripping portion. As shown in FIG.
The projections 7R, 7L, 8R, and 8L are a plate-shaped support portion 6-2 raised from the handle back plate 6-1 and an upwardly projecting plate-like portion 6 that is integral with and intersects with the support portion. -3. However, the lower portion of the plate portion 6-3 is
The height is substantially the same as the lower part of the support 6-2.

The container of the present invention is manufactured as follows. First, a preform in the shape of a bottomed cylindrical test tube is formed by injection molding. Further, the handle having the above-described configuration is formed in advance by an injection molding method. Then, after the handle is housed in the mold for container molding in advance, the preform is housed in the mold, and air is blown into the preform in a heated state. Thereby, the preform swells and the container is molded. At the time of this molding, the molding material is a projection 7R,
From above the projection, it wraps around the back side of the plate-shaped portion 6-3 and wraps around the lower side of the pillar portion so as to enclose the 7L, 8R, 8L, and digs deep enough. The container and the handle engage.

Since the projections are composed of a pair of distributions, the projections 7R and 7L, and the projections 8R and 8L, as shown in FIG.
Is arranged so as to straddle the mouth 1b.

Therefore, the back plate 6-1 can be brought close to the full edge of the mouth 1b, so that a sufficient margin l1 can be taken. Therefore, a sufficient grip margin can be obtained without protruding the handle to the outside of the container body.

Further, the projections 7R, 7L, 8R, 8L can obtain a sufficient depth without interfering with the mouth 1b, and the handle can be firmly fixed to the container body. In FIG.
A broken line indicates a biting line of the molding material. If the strength of the projection is weak, ribs are inserted as shown in FIG. 1 for reinforcement.

[0020]

According to the present invention, when the handle is mounted on the container by insert molding, the projection is located at a position deviated to the left and right from the periphery of the mouth nearest to the center of the mouth. For this reason, it is possible to reduce the distance between the back plate of the handle and the periphery of the mouth.

Therefore, it is possible to increase the amount of grip between the grip portion of the handle and the back plate and prevent the grip portion from going outside the outer periphery of the container body. Further, it is possible to obtain a sufficient depth of the projection, and it is possible to provide a handle-equipped container that can ensure the strength of engagement with the container body.

[Brief description of the drawings]

FIG. 1 is a perspective view of a handle according to the present invention.

FIG. 2 is a plan view of the handle according to the present invention.

FIG. 3 is a cross-sectional view in which the container body is cut into a ring at a handle portion.

FIG. 4 is a sectional view of a handle according to the present invention.

FIG. 5 is a front view of the container with a handle according to the present invention.

FIG. 6 is a side view of the container with a handle according to the present invention.

FIG. 7 is an explanatory view of a handle before improvement.

FIG. 8 is a sectional view of a preform.

FIG. 9 is a diagram illustrating a state during molding.

FIG. 10 is a sectional view of the container after molding.

FIG. 11 is a sectional view of a parison.

FIG. 12 is a sectional view of a mold at the time of molding with a parison.

FIG. 13 is a diagram for explaining a bite of a molding material into a protrusion.

[Explanation of symbols]

 6-1 Back plate 6-2 Support section 6-3 Plate section 7R projection 7L projection 8R projection 8L projection

Claims (2)

(57) [Claims] 1. A handle having a handle integrally formed by embedding a protrusion formed on a back plate of a handle having a vertically long grip portion into a side peripheral portion of a container body having an opening opening upward. A container with a handle, wherein the protrusion is formed from a back plate of the handle, and is constituted by a pair of protrusions arranged at intervals along a side peripheral portion of the container body. 2. A container with a handle according to claim 1, wherein two pairs of projections are provided vertically.