JP2569017Y2 - Thin container made of soft synthetic resin - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thin container made of a soft synthetic resin which can be used for various purposes.

[0002]

2. Description of the Related Art A thin container made of a soft synthetic resin in which a peripheral wall is erected from a peripheral edge of a bottom wall and an outward flange is provided at an upper end of the peripheral wall is widely used.

[0003]

The soft thin container is difficult to hold because its peripheral wall is easily deformed. Therefore, an outward flange is provided to reinforce the peripheral wall, and the entire container is integrally formed. In the case of the container, the outward flange is made of the same material as the peripheral wall of the container, so that the reinforcement by the outward flange is insufficient, so that the container must be thinned to the extent that the container is not difficult to hold. . In addition, the outward flange can increase its rigidity by increasing the thickness, but an excessive thickness will impair the appearance of the container, and an appropriate thickness that will not impair the appearance of the container. A sufficient effect cannot be obtained by the conversion.

[0004] In the present invention, a soft thin container is provided at an upper end portion of a peripheral wall thereof.
The above defect is eliminated by insert molding a rigid ring made of a synthetic resin harder than the container.

[0005]

As a first means, an outward flange is provided on the upper end of the peripheral wall 3 of a thin container made of a soft synthetic resin, the peripheral wall rising from the peripheral edge of the bottom wall. Then, a synthetic resin rigid ring 4 having a plurality of through-holes 5 formed in either the left or right or up or down direction and harder than the meat container was insert-molded.

As a second means, an outward flange is attached to the upper end of the peripheral wall 3 of a thin wall made of a soft synthetic resin which rises the peripheral wall from the peripheral edge of the bottom wall. A synthetic resin rigid ring 4 having a plurality of rod-shaped portions 11 attached at substantially equal intervals and harder than the thin container was insert-molded.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 1 is a thin container made of a soft synthetic resin according to the present invention. The outer diameter of the peripheral wall is slightly larger at the upper part than at the lower part. An outward flange is attached to the upper end of the peripheral wall, and into the outward flange,
A rigid ring 4 made of a synthetic resin harder than the container is insert-molded.

The rigid ring 4 is formed as shown in FIGS. 1 to 5 so that insert molding is easy.

In the embodiment shown in FIGS. 1 to 3, a plurality of through holes 5 are formed at equal intervals in the rigid ring 4, and in the first embodiment shown in FIGS. A plurality of through-holes 5 are formed at equal intervals in the lateral direction of the cross-section annular portion 7 which has a mushroom-shaped cross-section of a part of the rigid ring and hangs from the lower surface of the annular portion 6 of the head. In the second embodiment shown in FIG. 3, the cross-sectional shape of a part of the rigid ring is square, and a plurality of through holes 5 are formed at equal intervals in the vertical direction. At the time of insert molding, A in FIG.
As shown in the figure, a female mold 8, a stripper 9 placed on the female mold, and a male mold 10 fitted to the inner surface of the female mold 8 are all of three molds or two of them. , And insert molding by injecting a molten material for molding a soft synthetic resin material into a cavity formed by the mold.

FIGS. 4 and 5 show third and fourth embodiments,
A plurality of rods 11 are attached to the rigid ring 4 at equal intervals. The rods 1 are provided on both upper and lower surfaces of the rigid ring 4 in the third embodiment, and on the lower surface of the rigid ring 4 in the fourth embodiment.
1 and the rod-shaped portions 11 are embedded in the outward flange. In the insert molding, in the third embodiment, the upper end of the upper bar 11 and the lower end of the lower bar 11 are sandwiched by a mold, and in the fourth embodiment, the lower end of the rod 11 is 4 Hold the upper surface with a mold.

[0011]

According to the present invention, the thin container 1 made of a soft synthetic resin is used.
A rigid ring 4 made of synthetic resin, which is harder than the container, is insert-molded at the upper end of the peripheral wall 3 so that the ring forms a strong bone at the upper end of the peripheral wall 3 so that the outward flange of the upper end of the peripheral wall 3 is formed. Is strong, and the peripheral wall 3 having strong bones
By having the upper end, even a container that is easily deformed can be used without any trouble. Further, since a plurality of through holes 5 are formed in the rigid ring 4 in either the left or right or up and down directions, a molten resin material for outward flange molding flows into each of the through holes during injection molding of the container. So,
Even though the container is made of a soft synthetic resin material, there is no possibility that the rigid ring 4 will come off from the outward flange, and the outward flange and the rigid ring 4 can be surely integrated.

In the case of the present invention, a rigid ring 4 made of a synthetic resin, which is harder than the container, is insert-molded at the upper end of the peripheral wall 3 of the thin container 1 made of a soft synthetic resin. (3) The skeleton is formed at the upper end, and therefore, even if the container has the upper end of the peripheral wall having the skeleton, the container can be easily used even if it is easily deformed.
Further, since the plurality of rod-shaped portions 11 are provided at substantially equal intervals on the upper surface or the lower surface of the rigid ring 4, the rod-shaped portions 11 are embedded in the outward flanges at the time of injection molding of the container. Regardless of the synthetic resin material, there is no possibility that the rigid ring 4 comes off the outward flange, and the outward flange and the rigid ring 4 can be surely integrated.

[Brief description of the drawings]

FIG. 1 is a half sectional view of a container of the present invention.

FIG. 2A is an enlarged sectional view of a main part of a container showing the first embodiment, and FIG. 2B is a perspective view of a part of a ring used for the main part.

FIG. 3A is an enlarged sectional view of a main part of a container showing a second embodiment, and FIG. 3B is a perspective view of a part of a ring used for the main part.

FIG. 4A is an enlarged sectional view of a main part of a container showing a third embodiment, and FIG. 4B is a perspective view of a part of a ring used for the main part.

FIG. 5A is an enlarged sectional view of a main part of a container showing a fourth embodiment, and FIG. 5B is a perspective view of a part of a ring used for the main part.

[Explanation of symbols]

 1 ... container body 3 ... peripheral wall 4 ... rigid ring

Claims (2)

(57) [Scope of request for utility model registration] 1. An outer flange is attached to an upper end of a thin wall made of a soft synthetic resin, which rises from a peripheral edge of a bottom wall to a thin container made of a soft synthetic resin. A thin container made of a soft synthetic resin, wherein a rigid ring 4 made of a synthetic resin harder than the thin container having a plurality of through holes 5 formed therein is insert-molded. 2. An outer flange is attached to the upper end of the thin wall made of a soft synthetic resin, which rises from the bottom wall peripheral edge to the peripheral wall, and a plurality of rod-shaped portions are provided on the upper surface or the lower surface in the outward flange. A thin container made of a soft synthetic resin, wherein a rigid ring 4 made of a synthetic resin, which is harder than the thin container, is insert-molded.