JPH09401U - Thin container made of soft synthetic resin - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To easily hold a thin container made of a soft synthetic resin. SOLUTION: A synthetic resin rigid ring 4 harder than the container body is insert-molded on the upper end of the peripheral wall 3 of a thin container body 1 made of a soft synthetic resin.

Description

[Detailed description of the device]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a thin-walled container made of a soft synthetic resin that can be used for various purposes.

[0002]

[Prior art]

 A thin container made of a soft and rigid resin, in which a peripheral wall is erected from the peripheral edge of the bottom wall and an outward flange is attached to the upper end of the peripheral wall, is widely used.

[0003]

[Problems to be solved by the device]

 The above-mentioned soft thin-walled container is difficult to hold because its peripheral wall is easily deformed.Therefore, an external flange is provided to reinforce the peripheral wall, and the entire container is integrally molded. Since the flange is made of the same material as the peripheral wall of the container, reinforcement by the outward flange was insufficient, so it was necessary to reduce the thickness of the container to the extent that it did not make the container difficult to hold. Although the outward flange can be increased in rigidity by increasing the wall thickness, doing so impairs the appearance of the container. This proposal eliminates the above drawbacks by insert-molding a rigid ring made of synthetic resin, which is harder than the container body, into the upper end of the peripheral wall of the soft thin container body.

[0004]

[Means for Solving the Problems]

 A synthetic resin rigid ring 4 harder than the container body was insert-molded on the upper end of the peripheral wall 3 of the soft synthetic resin thin-walled container body 1 which stands up the peripheral wall 3 from the peripheral edge of the bottom wall.

[0005]

[Embodiment of the invention]

 Reference numeral 1 is a thin container body made of a soft synthetic resin according to the present invention, and a peripheral wall 3 is erected from a peripheral edge of a bottom wall 2. The outer diameter of the peripheral wall of the upper part is slightly larger than that of the lower part. The upper end of the peripheral wall is formed by insert molding a rigid ring 4 made of synthetic resin, which is harder than the container body.

The rigid ring 4 can have various shapes, as shown in FIGS. 1 to 8, for easy insert molding.

In the embodiment shown in FIGS. 1, 2 and 3, a plurality of through holes 5 are formed in the rigid ring 4 at equal intervals, and the first embodiment shown in FIGS. In the example, the through-hole 5 is bored in the lateral direction of the annular ring-shaped portion 7 having a cross section and hanging from the lower surface of the annular portion 6 of the head portion of the cross-section having a mushroom-shaped sectional shape of the rigid ring. Further, in the second embodiment shown in FIG. 3, a part of the rigid ring has a quadrangular cross-sectional shape, and the through holes 5 are formed in the upward and downward directions. At the time of insert molding, as shown in FIG. 2A, as shown in FIG. 2A, the entire die 3 including a female die 8 placed on the female die 8 and a male die 10 fitted to the inner surface of the female die 8. Or, the rigid ring 4 is sandwiched by two of these molds, and the molten material for forming the soft synthetic resin material is injected into the cavity formed by these molds for insert molding.

In the third and fourth embodiments shown in FIGS. 4 and 5, the legs 11 of the same length are projected from above and below or below the rigid ring 4 at equal intervals, and the legs 11 are arranged between the tips of the legs or the tips of the legs. The upper surface of the ring is provided so as to be sandwiched by a mold, and the fifth and sixth embodiments shown in FIGS. The protrusion 13 is projected so that insert molding can be performed by sandwiching the protrusions and the mold between the protrusions. In the case of the seventh embodiment shown in FIG. 8, a plurality of vertical grooves 14 are provided on the inner surface of the rigid ring 4, and a recess 15 is provided around the outer edge of the upper surface of the rigid ring so that the inner and outer surfaces of the ring and the upper surface of the outer peripheral portion are molded. The vertical groove 14 and the recess 15 are filled with the injection material so as to be insert-molded.

The shape of the rigid ring 4 is not limited to the above embodiment, and various other shapes may be considered.

[0010]

[Effect of the invention]

 This proposal has the structure described above. Since the synthetic resin rigid ring 4 harder than the container is insert-molded on the upper end of the peripheral wall 3 of the thin container body 1 made of soft synthetic resin, the ring is the upper end of the peripheral wall 3. Therefore, even if the container easily deforms, it can be used without any trouble by having the upper end portion of the peripheral wall having the force bone.

[Submission date] January 22, 1997

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of device] Thin container made of soft synthetic resin

[Utility model registration claims]

1. An outward flange is attached to an upper end of the peripheral wall 3 of a thin wall container made of a soft synthetic resin, which stands up from the peripheral edge of the bottom wall, and the left or right side or the upper or lower side is inserted into the outward flange. A thin container made of soft synthetic resin, characterized in that a rigid ring 4 made of synthetic resin, which is harder than the above thin container, having a plurality of through holes 5 formed in the direction is insert-molded.

2. A thin walled container made of a soft synthetic resin, which stands up from the peripheral edge of the bottom wall, is provided with an outward flange on the upper end of the peripheral wall 3, and a plurality of upper and lower surfaces are provided in the outward flange. A thin container made of a soft synthetic resin, characterized in that a rigid ring 4 made of synthetic resin, which is harder than the above-mentioned thin container, in which rod-shaped portions 11 are provided at substantially equal intervals, is insert-molded.

[Detailed description of the device]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a thin container made of a soft synthetic resin that can be used for various purposes.

[0002]

[Prior art]

 A thin container made of a soft synthetic resin in which a peripheral wall is erected from the peripheral edge of the bottom wall and an outward flange is attached to the upper end of the peripheral wall is widely used.

[0003]

[Problems to be solved by the device]

 A soft thin container is difficult to hold because its peripheral wall is easily deformed. Therefore, an external flange is provided to strengthen the peripheral wall and the entire container is integrally molded. Since it is made of the same material as the peripheral wall of the container, reinforcement by the outward flange was insufficient, so it was necessary to thin the container to the extent that it did not make the container difficult to hold. Although the rigidity of the outward flange can be increased by increasing the wall thickness, an extreme increase in wall thickness will impair the external appearance of the container. It is not possible to obtain a sufficient effect with the conversion.

The present invention eliminates the above drawbacks by insert-molding a rigid ring made of synthetic resin, which is harder than the container, at the upper end of the peripheral wall of a soft thin container.

[0005]

[Means for Solving the Problems]

 As a first means, an outer flange is attached to the upper end of the peripheral wall 3 of a thin container made of a soft synthetic resin, which stands up from the peripheral edge of the bottom wall, and the left or right or upper or lower part is inserted into the outer flange. A synthetic resin rigid ring 4 having a plurality of through holes 5 formed in the direction and harder than the above-mentioned 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 container made of a soft synthetic resin, which stands up from the peripheral edge of the bottom wall, and the upper or lower surface is inserted into the outward flange. A synthetic resin rigid ring 4 which is harder than the thin container and in which a plurality of rod-shaped portions 11 are provided at substantially equal intervals is insert-molded.

[0007]

Embodiment

 1 is a thin container made of a soft synthetic resin according to the present invention, in which a peripheral wall 3 is erected from a peripheral edge of a bottom wall 2. The outer diameter of the peripheral wall is slightly larger than that of the lower portion. An outward flange is attached to the upper end of the peripheral wall, and a rigid ring 4 made of synthetic resin, which is harder than the container, is insert-molded in the outward flange.

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

In the embodiment shown in FIGS. 1 to 3, a plurality of through holes 5 are formed in the rigid ring 4 at equal intervals, and in the first embodiment shown in FIGS. A plurality of through holes 5 are bored at equal intervals in the lateral direction of the ring-shaped cross-section 7 having a mushroom-shaped cross-sectional shape of a part of the rigid ring and hanging from the lower surface of the ring-shaped head 6 of the cross section. In the second embodiment shown in FIG. 3, a part of the rigid ring has a quadrangular cross-sectional shape, and a plurality of through holes 5 are formed at equal intervals in the upper and lower directions. At the time of insert molding, as shown in FIG. 2A, as shown in FIG. 2A, the entire 3 molds including the female mold 8, the stripper 9 placed on the female mold, and the male mold 10 fitted to the inner surface of the female mold 8. Or, the rigid ring 4 is sandwiched by two of these molds, and the molten material for molding the soft synthetic resin material is injected into the cavity formed by these molds for insert molding.

In the third and fourth embodiments shown in FIGS. 4 and 5, a plurality of rod-shaped portions 11 are attached to the rigid ring 4 at equal intervals. In the third embodiment, the rigid ring 4 is provided on both upper and lower surfaces. Further, in the fourth embodiment, rod-shaped portions 11 are attached to the lower surface of the rigid ring 4, and these rod-shaped portions 11 are embedded in the outward flange. In insert molding, in the third embodiment, the upper end surface of the rod-shaped portion 11 on the upper side and the lower end surface of the rod-shaped portion 11 on the lower side are clamped by a mold, and in the fourth embodiment, the lower end surface of the rod-shaped portion 11 and Hold the upper surface of the ring 4 with the mold.

[0011]

[Effect of the invention]

 The present invention is configured as described above, and in the case of the invention according to claim 1, a rigid ring 4 made of synthetic resin, which is harder than the container, is provided at the upper end of the peripheral wall 3 of the thin container 1 made of soft synthetic resin. Since the ring is insert-molded, the ring forms a brim of the upper end of the peripheral wall 3 so that the outward flange of the upper end of the peripheral wall becomes firm and is deformed by having the upper end of the peripheral wall 3 having the brim. Even easy containers can be used without problems. Further, since a plurality of through holes 5 are formed in the rigid ring 4 in either the left or right direction or the up and down direction, the molten resin material for outward flange molding flows into each of the through holes during injection molding of the container. Therefore, regardless of the container being 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 should be surely integrated. Can be done.

According to the second aspect of the present invention, since the synthetic resin rigid ring 4 harder than the container is insert-molded on the upper end of the peripheral wall 3 of the thin container 1 made of soft synthetic resin, the ring is the peripheral wall. (3) Since the strength bones are formed at the upper end, the peripheral wall having the strength bones can be used without trouble even if the container is easily deformed by having the upper end. Moreover, since a plurality of rod-shaped portions 11 are provided on the upper surface or the lower surface of the rigid ring 4 at substantially equal intervals, the rod-shaped portions 11 are embedded in the outward flange during injection molding of the container. Regardless of the 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 reliably integrated.

[Brief description of drawings]

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

FIG. 2A is an enlarged cross-sectional view of a main part of the 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 cross-sectional view of a main part of the container showing the second embodiment, and FIG. 3B is a perspective view of a part of the ring used for the main part.

FIG. 4A is an enlarged cross-sectional view of a main part of the container showing the 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 cross-sectional view of a main part of the container showing the fourth embodiment, and FIG. 5B is a perspective view of a part of the ring used for the main part.

[Explanation of symbols]

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

[Procedure amendment 2]

[Document name to be amended] Drawing

[Correction target item name] Fig. 6

[Correction method] Deleted

[Procedure 3]

[Document name to be amended] Drawing

[Name of item to be corrected] Figure 7

[Correction method] Deleted

[Procedure amendment 4]

[Document name to be amended] Drawing

[Correction target item name] Fig. 8

[Correction method] Deleted

[Brief description of drawings]

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

FIG. 2A is an enlarged cross-sectional view of the main part of the container shown in FIG. 1, and FIG.
FIG. 4 is a perspective view of a part of the ring used for the main part.

FIG. 3A is an enlarged cross-sectional view of a main part of the container shown in the 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 cross-sectional view of a main part of the container shown in the 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 cross-sectional view of a main part of the container shown in the fourth embodiment, and FIG. 5B is a perspective view of a part of a ring used for the main part.

6A is an enlarged cross-sectional view of a main part of the container shown in FIG. 6A, and FIG. 6B is a perspective view of a part of the ring used for the main part.

FIG. 7A is an enlarged cross-sectional view of an essential part of the container shown in the sixth embodiment, and FIG. 7B is a perspective view of a part of a ring used for the essential part.

FIG. 8A is an enlarged cross-sectional view of a main part of the container shown in the seventh embodiment, and FIG. 8B is a perspective view of a part of the ring used for the main part.

[Explanation of symbols]

 1 Container body 3 Peripheral wall 4 Rigid ring

Claims (1)

[Utility model registration claims] 1. A rigid ring 4 made of synthetic resin, which is harder than the container body, is insert-molded at the upper end of the peripheral wall 3 of the thin container body 1 made of soft synthetic resin, which stands up the peripheral wall 3 from the peripheral edge of the bottom wall. A thin container made of soft synthetic resin.