JP2558596B2 - Synthetic resin container with handle and manufacturing method thereof - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin container having a handle on a side surface of a thin-walled body and a method for manufacturing the synthetic resin container.

[0002]

2. Description of the Related Art In a container with a handle made of synthetic resin, which is generally used for packaging, if the handle protrudes from the side surface of the body, the handle often becomes an obstacle during packing and transportation. The part side surface is partially formed in a recess, and a handle is provided in the recess so that the handle can be gripped by the recess even if the handle does not project from the body side surface.

The injection stretch blow molding of this container with a handle using insert molding is disclosed in JP-A-56-602.
It is already known from Japanese Patent No. 26. This known container with a handle is configured such that, at the time of stretch blow molding of a preform in which a flange is integrally molded on the lower side of the mouth and neck, the upper end of the bent handle member is fitted onto the flange of the mouth and neck to allow the upper part of the body to be fitted. Then, the preform is molded into a container by stretch blow molding, and at the same time, the lower end of the handle member is fixed to the container body.

[0004]

In such a container with a handle, since the handle member is fitted into the mouth and neck portion to perform the insertion, the position of the handle is irrespective of the size of the container. Confined above the container between the body and the barrel. The position of this handle is not a problem for a container of about 1 liter, but for a large container of 1.5 liters or more, the support point of the container when the handle is held is above the container. As the content decreases and the center of gravity moves toward the bottom of the container, tilting of the container at the time of pouring requires force, and inefficient children and the elderly often have difficulty in pouring out the content with one hand. .

The present invention was conceived in order to solve the problems of the above-mentioned container with a handle made of synthetic resin, and its object is to handle the handle regardless of the size of the container used for packaging. It can be attached to any position on the container body, and the shape of the body of the handle attachment part is not limited to a specific shape.
(EN) It is to provide a new synthetic resin container with a handle in which a handle can be easily attached when the container is used, and a manufacturing method thereof.

[0006]

The features of the present invention according to the above object are to provide a handle mounting member integrally formed by insert molding on a body portion of a thin synthetic resin container injection-blow blow molded, and an end of the handle mounting member. A synthetic resin container with a handle including a handle member which is fitted to the container and provided on the side of the container.

Further, according to the present invention, a handle attaching member integrally formed with a buried portion and a seat body having a fitting portion is inserted into the body molding surface of the blow mold with the buried portion facing the cavity, and At the same time when the preform is stretch blow-molded into the container in the blow mold, at the same time the embedded part is immersed in the thin wall of the body to fix the handle attachment member to the container body, and the handle is attached to the seat body of the handle. The present invention is also characterized by a method of manufacturing a synthetic resin container with a handle, in which the end of the member is fitted and the handle member is provided on the side of the container.

[0008]

[Operation] Since the handle member is provided on the side of the body with the handle attachment member fixed to the side surface of the body, the attachment position of the handle is not limited to the upper part of the body, and depending on the size and shape of the container,
It can be attached to any part of the container body, and the supporting point of the container by the handle is lower than when attaching the handle using the mouth and neck, so it is easier to pour out the contents even if the container is large .

[0009]

1 is a container such as a packaging bottle made of polyethylene terephthalate resin, which has a thin body 2.

A pair of block-shaped grip attaching members 3 made of synthetic resin such as polyethylene are provided on the upper and lower sides of the body 2 by insert molding. The handle mounting member 3 is formed by integrally molding a flat seat body 3a and an embedded portion 3b whose peripheral side surface is undercut, and the seat body 3a is provided with an insertion hole 3c for fitting. There is.

Reference numeral 4 is a strip-shaped handle member made of a synthetic resin such as polypropylene, and has split grooves and locking pieces 4a and 4b projecting on both sides formed at the upper and lower ends thereof. The upper end portion of the handle member 4 is bent inward and is inserted downward into an insertion hole 3c provided in the seat body 3a of the handle attachment member 3 above the body portion to connect the lower side of the seat body and the locking piece 4a. Is fitted to the seat body 3a.

Further, the lower end of the handle member 4 is directly inserted downward into an insertion hole 3c provided in the seat body 3a of the handle mounting member 3 below the body portion, so that the lower side of the seat body and the locking piece 4b are connected. By fitting, it is fitted to the seat body 3a like the upper end portion. As a result, the handle member 4 vertically projects on the side surface of the body as a handle of the container. The attachment of the handle member 4 can be easily performed by the user when using the container.

The grip attachment member 3 is fixed to the body portion 2 by insert molding at the same time when the preform 1a is accommodated in the blow mold 5 and stretch blow molded into the container 1 as shown in FIG. be able to.

The inserts of the handle mounting members 3 and 3 are
This can be easily performed by using a commonly used means such as suction at the time of opening the mold before the preform 1a is transferred to the blow mold 5. Specifically, the seat 3a is housed and fixed by suction in a recess provided in the body molding surface of the blow mold 5, and the embedded portion 3b is positioned so as to project toward the cavity. The preform 1a is placed in the center of the mold in such a state.
When the preform 1a is stretch blow-molded after the mold is closed, the preform 1a is inflated to the full cavity by the air pressure and the body is molded into the thin-walled container 1, and at the same time, the embedded portion projecting into the cavity is embedded. The portion 3b is wrapped in the body wall, is immersed in the body portion, and is firmly fixed to the body portion 2 by undercut.

When the mold is opened after the molding is completed and the molded container 1 is released from the mold, the seats 3a, 3a of the pair of upper and lower handle attaching members 3, 3 project from the side surface of the thin body portion 2. Container 1 is obtained. The container 1 can be filled as it is, and the handle member 4 can be attached by the user's hand when using the container.

[0016]

As described above, according to the present invention, a handle mounting member integrally formed by insert molding the handle synthetic resin container on the body portion of the stretch blow-molded thin-walled synthetic resin container,
Since the handle mounting member is composed of a handle member provided on the side of the container by fitting the end portion to the handle mounting member, the mounting position of the handle is not limited to the upper part of the body portion, and may be changed depending on the size or shape of the container. And can be attached to any part of the container body.

Since packing and transportation can be performed with the handle removed, the problem of the dead space due to the handle can be solved, and the container can be handled more easily than the container in which the handle is integrally formed.

Furthermore, in the case of a large and tall container, the position of the handle can be made lower than that of the conventional one so that the contents can be easily poured out. Since it is not necessary to attach a handle by using, it can be widely applied to a container with a short neck and a wide mouth and the like.

To fix the handle mounting member on the body of the container, simply insert the handle mounting member into the mold surface of the blow mold,
As in the past, the handle attachment member can be fixed simply by performing stretch blow molding, so that the molding does not become particularly difficult and the cost of the container with a handle does not increase.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view of an essential part of an example of a synthetic resin container with a handle according to the present invention.

FIG. 2 is a side view of the above.

FIG. 3 is a vertical cross-sectional front view of a blow mold in which a handle mounting member is inserted when the mold is closed.

[Explanation of symbols]

 1 Container of synthetic resin 1a Preform 2 Body part 3 Handle attachment member 3a Seat body 3b Embedded part 3c Insertion hole 4 Handle member 4a Upper end locking piece 4b Lower end locking piece 5 Blow mold

Claims (2)

(57) [Claims] 1. A handle mounting member integrally formed by insert molding on a body portion of a stretch-blown thin-walled synthetic resin container, and a handle member provided on a side portion of the container by fitting an end portion to the handle mounting member. A synthetic resin container with a handle, comprising: 2. A handle mounting member integrally formed with a buried portion and a seat body having a fitting portion is inserted into the body part molding surface of a blow mold with the buried portion as the cavity side, and the blow mold is then inserted. At the same time when the preform is stretch blow-molded in the container, the embedded portion is immersed in the thin wall of the body to fix the handle attachment member to the body of the container, and the end of the handle member is attached to the seat of the handle attachment portion. A method for manufacturing a synthetic resin container with a handle, characterized in that the handle member is fitted to the side portion of the container.