TWI658972B - Improved plastic container - Google Patents

Abstract

The invention relates to an improved plastic container, which can be a structure with a handle integrally formed, or a container unit with a handle embedded in one side. A plastic container with a handle integrally formed or a container unit without a handle is composed of a unit material. The amount of plastic material is used to form a convex reinforcement portion integrally formed at the neck and shoulder portion of the container between the base of the body and the container port portion with respect to the neck shoulder portion of the other side of the handle, and the clamping line passes through the reinforcement portion. In the middle position, it provides enhanced strength and compressive performance for the impacted and squeezed test sections located in the internal stress concentration, while maintaining the same amount of plastic materials used in the existing unit, the plastic added by the reinforcement department The dispersion and conversion of the material amount reduces the amount of plastic material in each part of the body without increasing the material cost.

Description

Improved plastic container

The invention relates to a plastic container, in particular to an improved plastic container which improves the strength and pressure resistance of the parts that are easy to collide and squeeze on the basis of maintaining the amount of plastic materials used.

In the currently known liquid food containers, a handle is usually provided on one side of the liquid food container to facilitate the user's access to the handle, and the handle is used to provide a holding place. In the existing liquid food containers of various plastic materials, the handle and the body of the liquid food container can be integrally formed by blow molding, or the preformed handle is first placed in a mold, and then the blow molding method is used. The body of the liquid food container is molded, and a part of the handle is embedded and fixed in the body, so that the handle is integrated with the body.

The liquid food container structure blow-molded by the aforementioned plastic material forms a hollow body to provide liquid food filling therein, and a cap is sealed at the container port portion of the upper end of the body to ensure the safety of liquid food and transportation and storage. And hygiene. However, based on cost considerations, the liquid food container blow-molded with plastic materials is used to precisely calculate the unit material usage of a predetermined plastic material according to the shape of the body. In the manufacturing process, the plastic material used in the unit material is pre-formed. The hollow embryo body is input into the mold, and the hollow embryo body is blow-molded by a blowing mechanism under the mold clamping state, and the uniform body of the molded body is uniform by the pressure equalizing action of a high-pressure gas blown into a predetermined air pressure. In this way, the formed liquid food container achieves a predetermined structural strength under the combination of its shape and thickness.

However, the liquid food container structure blow-molded by the aforementioned plastic materials has been found through practical experience. During the handling, storage, and sales of liquid food products, the body of the liquid food container is adjacent to the container port on the other side of the handle. The neck-shoulder-side section of the part is a place that is easy to bump and squeeze. It is known that the body of the liquid food container uses a pressure equalizing action of a high-pressure gas blown into a predetermined air pressure to make the entire body have a uniform wall thickness. Provide any auxiliary support function, plus the easy-to-collision, squeezed neck and shoulder side section is located at the clamping line position of the body of the liquid food container, and is located at the location where the stress is concentrated in the body, so for the body of the liquid food container For the collision and compression of the shoulder and shoulder sections, there are problems of insufficient strength and insufficient compression resistance.

The main object of the present invention is to provide an improved plastic container, which can improve the problems of insufficient strength and compression resistance of the neck and shoulder side sections where the existing plastic containers are located at the internal stress concentration portion and are susceptible to collision and compression.

In order to achieve the purpose of the previous disclosure, the improved plastic container proposed by the present invention is formed of a plastic material using a unit amount of material, and the plastic container defines a mold clamping line. The plastic container includes: a body, which includes a body A body base, a container port portion, and a container neck and shoulder portion, the container port portion is located above the body base portion, the container neck and shoulder portion is connected between an upper end of the body base portion and a lower end of the container port portion, and one side of the container neck shoulder portion A neck-shoulder-side section, an accommodation space is formed in the body, the accommodation space extends to the container port portion to form an opening, and the clamping line passes through the body base portion, the container port portion, and the neck and shoulder portion of the container. Neck and shoulder side section; a handle formed on the upper section of the body and located on the other side of the neck and shoulder section, the clamping line passes through the handle; and a reinforcement part formed on the neck and shoulder section of the body The outer surface of the main body is protruded, and the clamping line passes through a middle position of the reinforcing portion.

In order to achieve the purpose of the previous disclosure, another improved plastic container provided by the present invention includes a container unit and a handle embedded and fixed on the upper side of the container unit. The container unit is formed of a plastic material used in a unit material amount. And the container unit defines a clamping line, the container unit includes: a body including a body base, a container port portion, and a container neck shoulder portion, the container port portion is located above the body base portion, and the container neck shoulder portion It is connected between the upper end of the base of the body and the lower end of the container port portion. The other side of the neck of the container relative to the handle is a neck shoulder section. An accommodation space is formed in the body, and the accommodation space extends. An opening is formed to the container port portion, and the clamping line passes through the neck base portion of the body, the container port portion, and the neck shoulder portion of the container; and a reinforcement portion formed in the neck shoulder portion of the body. The outer surface of the main body is protruded, and the clamping line passes through a middle position of the reinforcing portion.

With the invention of the front-opening improved plastic container, it mainly uses the neck and shoulder portion of the container to form a reinforcement portion on the outer side of the neck and shoulder side section on the other side of the handle, so that the neck and shoulder side section of the body is combined with the convex reinforcement The part increases the wall thickness of the part, and the reinforcing part is located on the mold clamping line. Therefore, the present invention can provide the performance of improving strength and compression resistance for the collision-extrusion neck-shoulder side section where the internal stress is concentrated.

On the other hand, a plastic container with a handle or a container unit without a handle is formed by using a single amount of plastic material, which is equivalent to the existing plastic container with a handle or The amount of plastic material used in the production of the container unit. Therefore, the improved plastic container of the present invention uses the protruding reinforcement formed on the outside of the neck and shoulder side section to increase wall thickness, strength and compression without increasing material costs. At the same time, on the basis of maintaining the same amount of plastic materials used in the manufacture of existing plastic containers or container units with handles, in the process of blow molding, the amount of plastic materials increased by the reinforcement part is naturally dispersed and reduced. The amount of plastic material in each part of the body, in which the total material volume of the overall wall thickness of the body is much larger than the material volume of the reinforcement part. Under the action of high pressure gas pressure of blow molding, the wall thickness of each part of the body is only a small reduction in size , So that the body can still maintain its necessary strength and compression performance.

As shown in FIG. 1 to FIG. 3, the first preferred embodiment of the improved plastic container of the present invention is disclosed. The plastic container is integrally formed with a handle 20A structure, and the plastic container is made of a unit of plastic material. For molding, the amount of the unit material used is equivalent to the amount of the unit plastic material used in the manufacture of the existing plastic container with a handle 20A integrally formed, that is, the amount of the plastic material used to maintain an existing plastic container. The plastic container can be formed by a blow molding method using a combination mold, so a mold line 40 is formed in the plastic container relative to the mold clamping position of the combination mold. The blow molding method is an existing technology and is not an innovative technical feature of the present invention, and is not repeated here.

Regarding the structure of the first preferred embodiment of the plastic container, as shown in FIGS. 1 to 3, it includes a body 10, a handle 20A, and a reinforcing portion 30A. The body 10 includes a body base 11, a container port portion 12, and a container neck shoulder portion 13. The container port portion 12 is located above the body base portion 11. The container neck shoulder portion 13 is connected to the upper end of the body base portion 11 and the container port. Between the lower ends of the portions 12, one side of the container neck shoulder portion 13 is a neck shoulder portion 14. A receiving space 15 is formed in the body 10, and the receiving space 15 extends to the container port portion 12 to form an opening 16. The clamping line 40 passes through intermediate positions of the body base 11, the container port portion 12, the neck shoulder portion 14 of the container neck shoulder portion 13, and the like. The body 10 can provide liquid food filling through the container port portion 12, and the container port portion 12 can be provided with a cover (not shown) for sealing.

As shown in FIG. 1 to FIG. 3, the handle 20A is integrally formed on the upper section of the body 10 and located on the other side of the neck-shoulder side section 14, and the clamping line 40 passes through the middle position of the handle 20A.

As shown in FIG. 1 to FIG. 4, the reinforcing portion 30A is integrally formed outside the neck shoulder portion 14 of the body 10 to protrude from the outer surface of the body 10. The clamping line 40 passes through the middle position of the reinforcing portion 30A. . By combining the reinforcing portion 30A with the neck-shoulder-side section 14, the wall thickness of the neck-shoulder-side section 14 is increased, thereby strengthening the strength and compression resistance of the neck-shoulder-side section 14. The thickness of the reinforcing portion 30A protruding from the outer surface of the main body 10 may be 0.5 mm (abbreviated as mm) to 2 mm. In the first preferred embodiment, the shape of the reinforcing portion 30A is a long sheet, and the reinforcing portion 30A extends downward from the neck shoulder portion 14 adjacent to the container port portion 12 to the adjacent base portion 11 Office. However, the shape of the reinforcing portion 30A is not limited to the long sheet shape, and the reinforcing portion 30A can also be changed in shape according to the appearance design of the plastic container.

As shown in FIG. 5, a second preferred embodiment of the improved plastic container of the present invention is disclosed. The plastic container includes a container unit and a handle 20B embedded and fixed on the upper side of the container unit. It is formed from a plastic material used in a unit material amount, which is equivalent to the amount of plastic material used in the unit when the container unit of the existing integrated handle 20B is manufactured, that is, the plastic container maintains an existing container unit. The amount of plastic material used. In the plastic container, a preformed handle 20B is first placed in a mold, and after the mold is closed, the container unit is formed by blow molding, so that a part of the handle 20B is embedded and fixed in the body 10, and the handle 20B and the The container unit is consolidated. Therefore, a mold clamping line 40 is formed in the mold clamping position of the combined unit relative to the combined mold. The blow molding method is also an existing technology, and is not an innovative technical feature of the present invention, and is not repeated here.

As shown in FIG. 5, the container unit includes a main body 10 and a reinforcing portion 30B. The main body 10 includes a main body base 11, a container port portion 12, and a container neck shoulder portion 13. The container port portion 12 is located at the base of the body. Above 11, the container neck shoulder 13 is connected between the upper end of the body base 11 and the lower end of the container port portion 12. The other side of the container neck shoulder 13 relative to the handle 20B is a neck shoulder section 14. An accommodating space 15 is formed in the body 10, and the accommodating space 15 extends to the container port portion 12 to form an opening 16. The clamping line 40 passes through the body base portion 11, the container port portion 12, and the container neck shoulder portion 13. The neck shoulder region 14 and so on. The body 10 can provide liquid food filling through the container port portion 12, and the container port portion 12 can be provided with a cover (not shown) for sealing.

The reinforcing portion 30B is formed outside the neck shoulder portion 14 of the body 10 to protrude from the outer surface of the body 10. The clamping line 40 passes through the middle position of the reinforcing portion 30B. The thickness of the neck-shoulder-side section 14 is increased by the combination of the reinforcing portion 30B and the neck-shoulder-side section 14, thereby enhancing the strength and compressive performance of the neck-shoulder-side section 14. The thickness of the reinforcing portion 30B protruding from the outer surface of the main body 10 may be 0.5 mm to 2 mm. In the second preferred embodiment, the shape of the reinforcing portion 30B is a long sheet, and the reinforcing portion 30B extends downward from the neck shoulder portion 14 adjacent to the container port portion 12 to the adjacent base portion 11. Office. However, the shape of the reinforcing portion 30B is not limited to a long sheet shape, and the reinforcing portion 30B can also be changed in shape according to the appearance design of the plastic container.

In summary, the improved plastic container of the present invention uses the container neck shoulder 13 of the body 10 to form a reinforcement 30A, 30B outside the neck shoulder side section 14 on the other side of the handles 20A, 20B, so that the neck and shoulders of the body 10 The side section 14 is combined with the convex reinforcements 30A and 30B to increase the wall thickness of the part, and the reinforcements 30A and 30B are located on the clamping line 40. The side and shoulder sections 14 of the neck and shoulder which are easily collided and squeezed are located in the internal stress concentration. In other words, the strength and compression performance of the neck-shoulder-side section 14 can be significantly improved.

Furthermore, whether the improved plastic container of the present invention is a plastic container with a handle 20A integrally or a container unit without a handle 20B, the embodiments are all formed by using a plastic material of a unit material amount, said unit The amount of material used is equivalent to the amount of plastic material used in the manufacture of a conventional plastic container with a handle 20A or a container unit without a handle 20B. Therefore, without increasing the cost of materials, it is formed by using the outside of the neck shoulder section 14 The structure of the protruding reinforcements 30A, 30B provides an easy-to-collision, squeezed neck-shoulder-side section 14 in the plastic container to increase wall thickness, increase strength and compression resistance, and maintain the same Based on the amount of plastic materials used in the manufacture of existing plastic containers with handles 20A or container units without handles 20B, in the process of blow molding in combination with combined molds, the plastic materials added by the reinforcement sections 30A and 30B The amount can be naturally dispersed and reduced to reduce the amount of plastic material in each part of the body 10. Among them, because the total material volume of the entire wall thickness of the body 10 is much larger than that of the reinforcement portions 30A and 30B, under the action of the high pressure gas pressure of blow molding, the wall thickness of each part of the body 10 is only a slight reduction in size The body 10 can still maintain its necessary strength and compression performance.

10‧‧‧ Ontology

11‧‧‧ base of the body

12‧‧‧Container Port Department

13‧‧‧ container neck shoulder

14‧‧‧ Neck shoulder

15‧‧‧accommodation space

16‧‧‧ opening

20A, 20B‧‧‧Handle

30A, 30B‧‧‧Enhancement Department

40‧‧‧clamping line

FIG. 1 is a schematic side view of a first preferred embodiment of an improved plastic container of the present invention. FIG. 2 is a schematic top view of a first preferred embodiment of an improved plastic container of the present invention. FIG. 3 is a schematic front view of a first preferred embodiment of an improved plastic container according to the present invention. 4 is a schematic cross-sectional view of a first preferred embodiment of an improved plastic container according to the present invention. FIG. 5 is a schematic front sectional view of a second preferred embodiment of an improved plastic container of the present invention.

Claims (8)

An improved plastic container is formed of a plastic material used in a unit material amount, and the plastic container defines a mold clamping line. The plastic container includes: a body including a body base, a container port portion, and A container neck and shoulder portion, the container port portion is located above the body base portion, the container neck and shoulder portion is connected between an upper end of the body base portion and a lower end of the container port portion, and one side of the container neck shoulder portion is a neck shoulder portion. An accommodating space is formed in the body, and the accommodating space extends to the container port portion to form an opening, and the clamping line passes through the base portion of the body, the container port portion, and the neck and shoulder side sections of the container neck and shoulder portion; a handle, which The upper part of the body is located on the other side of the neck shoulder section, the clamping line passes through the handle; and a reinforcement part is formed on the neck shoulder section of the body to protrude from the outer surface of the body, The clamping line passes through a middle position of the reinforcing portion. The improved plastic container according to claim 1, wherein the reinforcing portion extends downward from the neck and shoulder side section adjacent to the container port portion to the body base portion. The improved plastic container according to claim 1 or 2, wherein the thickness of the reinforcing portion protruding from the outer surface of the main body is 0.5 mm to 2 mm. The improved plastic container according to claim 1 or 2, wherein the shape of the reinforcing portion is a long sheet. An improved plastic container includes a container unit and a handle embedded and fixed on the upper side of the container unit. The container unit is formed of a plastic material used in a unit material amount, and the container unit defines a mold Line, the container unit comprises: a body comprising a body base, a container port portion and a container neck shoulder portion, the container port portion is located above the body base portion, the container neck shoulder portion is connected to the upper end of the body base portion and the Between the lower end of the container port portion, the other side of the neck portion of the container relative to the handle is a neck shoulder portion. An accommodation space is formed in the body, and the accommodation space extends to the container port portion to form an opening. The clamping line passes through the body base, the container port portion, and the neck shoulder portion of the container neck shoulder portion; and a reinforcement portion formed on the neck shoulder portion of the body to protrude from the outer surface of the body, said The clamping line passes through the middle position of the reinforcing portion. The improved plastic container according to claim 5, wherein the reinforcing portion extends downward from the neck and shoulder side section adjacent to the container port portion to the body base portion. The improved plastic container according to claim 5 or 6, wherein the thickness of the reinforcing portion protruding from the outer surface of the main body is 0.5 mm to 2 mm. The improved plastic container according to claim 5 or 6, wherein the shape of the reinforcing portion is a long sheet.