JP2002205722A - Plastic container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a plastic container having a wide mouth which is integrally equipped with a cap to seal the mouth section having been unsealed once. SOLUTION: This plastic container 1 is integrally molded by blow-molding. The plastic container 1 comprises the mouth section, a body section 3 and a bottom section 4. The cap 5 to seal the mouth section 2 is connected with the bottom section 4 through a thin cutting section 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container for solids such as candy and drops, semi-solids such as ice cream and sherbet, and viscous materials such as mayonnaise, ketchup and kneaded dough. The present invention relates to a plastic container integrally provided with a cap for sealing a portion at a bottom portion.

[0002]

2. Description of the Related Art Conventionally, a tube-shaped plastic container in which a nozzle-shaped mouth is provided with a cap for sealing the mouth is described in Japanese Patent Application Laid-Open No. 9-193950. Japanese Patent Laid-Open Publication No. Hei 7-223622 discloses a plastic container in which a small hole is provided at the mouth and a cap is continuously provided so as to close the small hole. Then, in these plastic containers, after the cap is torn off from the mouth and the mouth is opened, the mouth can be sealed with the cap.

[0003]

By the way, in such a conventional plastic container, since a cap is continuously provided at the mouth thereof, the mouth has a small diameter such as a nozzle or a small hole. Although it must be an opening, there is not much problem as a container with good fluidity, but the diameter of the mouth is large like a container of solid, semi-solid, or highly viscous contents. It is difficult to connect the cap to the mouth part when it is necessary to perform the operation.

[0004] In order to address such problems in the conventional plastic container, the present invention integrally includes a cap for sealing the opened mouth even if the mouth is wide. It is an object of the present invention to provide a plastic container.

[0005]

According to the present invention, there is provided a plastic container according to claims 1 to 3 for achieving the above object. That is, a first aspect of the present invention is a plastic container integrally formed by blow molding, wherein the plastic container comprises a mouth, a body, and a bottom, and a cap for sealing the mouth is provided on the bottom with a thin cut portion. The plastic container is characterized by being continuously provided through a plastic container.

According to a second aspect of the present invention, in the configuration of the first aspect, the mouth portion is formed to have a wide mouth having an inner diameter of 8.0 mm or more and 30% or more of the maximum inner diameter of the body portion. It is assumed that.

According to a third aspect of the present invention, in the configuration of the first or second aspect, the thin cut portion provided with the cap connected to the bottom portion is flat at the upper end of the cap along the mating surface of the split mold during blow molding. A part or an end portion of the compression part formed in the above is compressed and thinned and provided integrally.

[0008]

FIG. 1 is a front view of a plastic container according to an embodiment of the present invention, FIG.
FIG. 3 is a partial longitudinal side view, and FIG. 4 is a cross-sectional view showing a blow molding mode of a plastic container according to one embodiment of the present invention.

1 to 3, reference numeral 1 denotes a plastic container. This plastic container 1 comprises a mouth part 2, a body part 3 and a bottom part 4, and the bottom part 4 is provided with a cap 5 provided at a part or an end of a flat compression part 19 formed at an upper end thereof. They are connected via a section 6. The plastic container 1 is formed by blow molding a thermoplastic plastic and is integrally formed.
Is formed by compressing and thinning the parison during blow molding. On the outer peripheral surface of the mouth 2, a ridge 7 for fitting and holding the cap 5 is formed. The body 3 is formed so as to gradually increase in diameter from the mouth 2, and the bottom 4 is formed as a flat surface or a shallow concave surface. The mouth 2 has a spout 8 with an open end face, and a concave groove 9 is formed on the inner periphery of the open end of the cap 5 so as to fit into the ridge 7 of the mouth 2.

The inner diameter of the spout 8 is 8.0 m.
m and a wide mouth of 30% or more of the maximum inner diameter of the body 3. The illustrated plastic container 1 according to the present invention is used as a container for solids such as candy and drops, semi-solids such as ice cream and sherbet, and high-viscosity containers such as mayonnaise, ketchup and dough. Therefore, in order to improve the pourability of the contents, it is important that the opening is formed wide under the above conditions.

FIG. 4 shows a plastic container 1 according to the present invention.
In this case, integral molding is performed by blow molding in the manner shown in FIG. In FIG. 4, reference numeral 10 denotes one of a pair of split molds. The cavity 11a is a mouth forming part, 11b is a trunk forming part, and 11c is a cap forming part. Reference numeral 12 denotes a compression-molded portion, which is a portion for compression-molding the thin cut portion 6. The cap molding portion 11c is provided with an extension molding portion 11d extending downward, and the blowing nozzle 13 is inserted into the extension molding portion 11c. Further, the blowing nozzle 14 is also inserted into the upper end surface of the mouth forming portion 11a.

A parison 15 is arranged between one mold 10 and another mold (not shown) forming a pair of split molds, and the mold is clamped and pressure is applied to the parison 15 from a blow nozzle 14 and a blow nozzle 13. Blow molding is performed by blowing fluid. 1
Reference numerals 6 and 17 denote burrs. In the blow-molded plastic container 1, the upper end face of the mouth 2 is closed, and the cylindrical extension 18 is also connected to the cap 5. Formed and cylindrical extension 18
Is cut off to form a cap 5.

The plastic container 1 has a spout 8 for the mouth 2.
After filling, the spout 8 of the mouth 2 is sealed by welding a plastic film, aluminum foil, an inner cap or the like.

In order to pour out the contents from the plastic container 1, the spout 8 of the mouth 2 is opened, but the spout 8 of the mouth 2 is reopened as in the case where only a part of the contents is used. When it is necessary to seal, the bottom 4 is cut through the thin cut 6.
The torn cap 5 is torn off from the cutting portion 6 and the cap 5 is put on the mouth portion 2. The concave groove 9 of the cap 5 covering the mouth 2 is fitted into the ridge 7 of the mouth 2 so that the sealed state is reliably maintained.

The contents are filled from the mouth 2 provided with the spout 8, and there is no need to provide a filling port on the bottom 4. Therefore, when the cap 5 is torn off from the cutting part 6 from the bottom part 4,
Since the bottom 4 has a substantially flat or shallow concave shape, the plastic container 1 can be erected with the mouth 2 up.

In the plastic container 1 according to the present invention, since the cap 5 is connected to the bottom 4 via the thin cut portion 6, the mouth 2 is completely restricted by the provision of the cap 5. In addition, the mouth 2 can be made sufficiently wide with respect to the body 3. When the plastic container 1 according to the present invention is a container such as an ice cream or sherbet, the inner diameter of the mouth 2 is not less than 8.0 mm, and moreover, it is not less than 30% of the maximum inner diameter of the body 3. This is particularly necessary and preferable for improving the output.

[0017]

According to the present invention, in a plastic container integrally formed by blow molding, the plastic container has a mouth, a body, and a bottom, and a cap for sealing the mouth is provided on the bottom. By being continuously provided via the thin cut portion, even if the mouth is wide, a plastic container integrally provided with a cap for sealing the mouth once opened can be obtained. .

[Brief description of the drawings]

FIG. 1 is a front view of a plastic container according to an embodiment of the present invention.

FIG. 2 is a vertical sectional front view of the plastic container according to the embodiment of the present invention.

FIG. 3 is a vertical sectional side view of a part of the plastic container according to one embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a blow molding mode of the plastic container according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Plastic container 2 Mouth part 3 Body part 4 Bottom part 5 Cap 6 Cutting part 7 Ridge 8 Injection port 9 Concave groove 10 One mold of a pair of split dies 11a Mouth forming part 11b Trunk forming part 11c Cap Molding part 11d Extension part molding part 12 Compression molding part 13 Blowing nozzle 14 Blowing nozzle 15 Parison 16, 17 Burr 18 Cylindrical extension part 19 Compression part

Continued on the front page F term (reference) 3E033 AA02 BA13 DA04 DB10 DD01 DD02 DD20 FA03 3E084 AA03 AA12 AA24 AB06 AB07 BA01 CA01 CB03 CC03 DA01 DB13 DC03 FA09 FC07 GA08 GB12 4F202 AG07 AG23 CA15 CB01 CK11 CK83 4F208 AG07 AG23

Claims (3)

[Claims] 1. A plastic container integrally formed by blow molding, wherein the plastic container comprises a mouth, a body, and a bottom, and a cap for sealing the mouth is provided on the bottom with a thin cut portion. A plastic container characterized by being continuously connected. 2. The plastic container according to claim 1, wherein the mouth is formed as a wide mouth having an inner diameter of 8.0 mm or more and 30% or more of the maximum inner diameter of the body. 3. A thin cut portion in which a cap is continuously provided at the bottom portion is formed by compressing and thinning a part or an end of a flat portion formed at the upper end of the cap along the mating surface of the split mold during blow molding. The plastic container according to claim 1, wherein the plastic container is provided integrally.