CN210364755U

CN210364755U - Plastic bottle

Info

Publication number: CN210364755U
Application number: CN201920364248.4U
Authority: CN
Inventors: 邓玉明; 卢云峰
Original assignee: Inner Mongolia Yili Industrial Group Co Ltd
Current assignee: Inner Mongolia Yili Industrial Group Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2020-04-21
Anticipated expiration: 2029-03-21

Abstract

The utility model discloses a plastic bottle relates to the storage container field for optimize the structure of plastic bottle. The plastic bottle comprises a bottle body and a bottle bottom. The bottle end is connected with the body, and the bottle end is protruding towards the bottleneck of body, and the bottle end includes central zone and centers on central zone's cambered surface region, and the cambered surface region is equipped with the additional strengthening who is connected with central zone. According to the technical scheme, the bottle bottom adopted by the bottle is convex towards the bottle opening, the concave pit center area and the cambered surface area of the bottle bottom are arranged, the whole bottle bottom adopts a convex structure, the bottle bottom is extended, and the size of the bottle bottom is large; and the cambered surface area is provided with a reinforcing structure connected with the central area so as to further increase the surface area of the bottle bottom part, so that the bottle bottom is fully expanded. By the structure, when bottle blowing is carried out in a stretching mode, raw materials at the bottom of the bottle can be fully stretched, accumulated materials at the bottom are reduced, the shock resistance of the bottom is enhanced, and the risk of bottom protrusion is reduced or even eliminated.

Description

Plastic bottle

Technical Field

The utility model relates to a storage container field, concretely relates to plastic bottle.

Background

Plastic bottles, in particular polyethylene terephthalate bottles, stretch blow molded in a two-step process, are blow molded by the following process: before bottle blowing, a semi-finished product, namely a bottle blank, is processed by using an injection molding machine; and then, the bottle blank is heated for the second time by using a bottle blowing machine and then stretched for bottle blowing. The bottle blowing method adopts a two-step method, has high production efficiency, and is adopted by more and more packaging enterprises.

However, when the bottle is blown by the two-step method, the semi-finished bottle blank needs to be subjected to secondary heating in the bottle blowing machine and then subjected to stretch blow molding. To ensure uniform wall thickness distribution of the blown bottle, a more rational design of the appearance of the blown bottle, particularly the bottom of the bottle, is required.

The inventor finds that at least the following problems exist in the prior art: because the bottom structure of the semi-finished bottle blank is usually hemispherical, if the design of the bottle-shaped bottom is not effectively matched with the stretching track of the raw material at the bottom of the bottle blank, the accumulated material is often formed at the bottom of the bottle in the bottle-blowing stretching process, so that the raw material is excessively accumulated at the bottom of the bottle. Therefore, the distribution of raw materials of the bottle body section is influenced, so that the raw materials of the bottle body section are too few, the physical properties of the bottle body such as compression resistance, deformation resistance and the like are influenced, the bottle bottom is easily protruded due to too many raw materials after filling, the bottle bottom is unstable in standing, and the bottle bottom is easy to break when a drop test is carried out, and the finished product rate, the use and the consumer experience of the bottle are finally influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a plastic bottle for optimize the structure of plastic bottle.

The utility model provides a plastic bottle, include:

a bottle body; and

the bottle bottom is connected with the bottle body, the bottle bottom faces towards the bottle opening of the bottle body and is convex, the bottle bottom comprises a central area and an arc surface area surrounding the central area, and the arc surface area is provided with a reinforcing structure connected with the central area.

In some embodiments, the radius of the central region is 1.5mm to 3 mm.

In some embodiments, the number of the reinforcing structures is 4 to 8, and the reinforcing structures are arranged at intervals around the circumference of the central area.

In some embodiments, the arc radius of the arc area is 20mm to 30 mm.

In some embodiments, the bottom inclination angle of the cambered surface region is 40-50 degrees; and/or the inclination angle of the top of the cambered surface area is 20-30 degrees.

In some embodiments, the reinforcing structure comprises:

the arc-shaped bulge is protruded towards one side of the bottle opening of the bottle body.

In some embodiments, the size of the end of the arcuate projection that connects to the central region is greater than the size of the other end of the arcuate projection that faces away from the central region.

In some embodiments, the length of the arcuate projections is between 10mm and 15 mm; and/or the width is 5 mm-8 mm; and/or the apex angle of the end of the arcuate projection facing away from the central region is between 15 ° and 20 °.

In some embodiments, the central region is located at a distance of 12mm to 15mm from the bottom surface of the bottle bottom.

In some embodiments, the height of the central region is 1/2-1/4 of the height of the cambered surface region.

In some embodiments, the bottle bottom and the bottle body are connected by at least two steps.

According to the technical scheme, the bottle bottom adopted by the bottle is convex towards the bottle opening, the concave pit center area and the cambered surface area of the bottle bottom are arranged, the whole bottle bottom adopts a convex structure, the bottle bottom is extended, and the size of the bottle bottom is large; and the cambered surface area is provided with a reinforcing structure connected with the central area so as to further increase the surface area of the bottle bottom part, so that the bottle bottom is fully expanded. By the structure, when bottle blowing is carried out in a stretching mode, raw materials at the bottom of the bottle can be fully stretched, accumulated materials at the bottom are reduced, the shock resistance of the bottom is enhanced, and the risk of bottom protrusion is reduced or even eliminated.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic structural view of a lower half of a plastic bottle according to an embodiment of the present invention;

fig. 2 is a schematic sectional view a-a of a plastic bottle according to an embodiment of the present invention.

Detailed Description

The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 2.

Referring to fig. 1 and 2, an embodiment of the present invention provides a plastic bottle, which includes a bottle body 1 and a bottle bottom 2. The bottle bottom 2 is connected with the bottle body 1, the bottle bottom 2 protrudes towards the bottle opening of the bottle body 1, the bottle bottom 2 comprises a central area 21 and an arc area 22 surrounding the central area 21, and the arc area 22 is provided with a reinforcing structure 23 connected with the central area 21.

Referring to fig. 2, a holding portion 24 recessed toward the bottom of the body 1 is provided below the central region 21. The cambered surface region 22 is provided with five inwardly recessed reinforcing structures 23, the roots of the reinforcing structures 23 being connected to the central region 21.

The body 1 and the base 2 are made of, for example, plastic, and the plastic bottle is manufactured by two-step blow molding.

Referring to fig. 1 and 2, in some embodiments, the radius R1 of the central region 21 is between 1.5mm and 3 mm.

The radius R1 of the central region 21 is about 1/4 of the radius R2 of the entire bottle bottom 2. The ratio enables the size of the cambered surface area 22 to be larger, and is beneficial to subsequent bottle blowing.

Referring to fig. 1 and 2, the number of the reinforcing structures 23 is 4-8, and the reinforcing structures 23 are arranged at intervals around the circumference of the central area 21.

The reinforcing structures 23, which are spaced from one another in the above-mentioned range of values, also improve the structural strength of the bottle bottom 2 on the premise of increasing the surface area of the bottle bottom 2.

Referring to fig. 1 and 2, the arc radius R3 of the arc region 22 is 20mm to 30 mm. The radius R3 of the cambered surface region 22 herein refers to the radius of the cambered surface region 22.

Referring to fig. 1 and 2, the bottom inclination angle α of the arc surface region 22 is 40 ° to 50 °, such as 40 °, 42 °, 45 °, 48 °, 50 °, and/or the top inclination angle β of the arc surface region 22 is 20 ° to 30 °, such as 20 °, 22 °, 25 °, 28 °, 30 °.

The bottom inclination angle α of the arc surface region 22 is the angle between the tangent of the bottommost arc surface of the arc surface region 22 and the plane of the bottle bottom.

The top inclination angle β of the arc surface region 22 is the angle between the tangent of the topmost arc surface of the arc surface region 22 and the plane of the bottle bottom.

In some embodiments, the above numerical ranges are satisfied at the same time. By adopting the numerical values, the bottle bottom 2 is higher, and the bottle is convenient to manufacture by blowing because of no too many sharp corners.

Referring to fig. 1 and 2, the reinforcing structure 23 includes an arc-shaped protrusion protruding toward the mouth side of the body 1.

The shape of the arc-shaped protrusion is, for example, large at one end and small at the other end. Specifically, the end near the central region 21 is large in size, and the end near the edge of the bottle bottom 2 is small in size. The arc-shaped bulge bulges towards the direction of the bottle mouth, and the bulged part is arc-shaped. The arc-shaped bulge effectively increases the structural strength of the bottle bottom 2 and the surface area of the bottle bottom 2, so that the plastic wall is uniformly distributed when the bottle is manufactured by adopting a two-step method.

Referring to fig. 1 and 2, the dimension of the end of the arcuate projection that connects to the central region 21 is greater than the dimension of the other end of the arcuate projection that faces away from the central region 21.

Referring to fig. 1 and 2, the length L of the arc-shaped protrusion is 10mm to 15mm, such as 10mm, 11mm, 12mm, 13mm, 14mm, and 15 mm. And/or the width W is 5mm to 8mm, such as 5mm, 7mm, 8 mm. And/or the apex angle γ of the end of the arcuate projection facing away from the central region 21 is 15 ° to 20 °, such as 15 °, 16 °, 17 °, 18 °, 19 °, 20 °.

The length of the arc-shaped protrusion refers to the maximum length L of one end of the arc-shaped protrusion connected with the central region 21 and the other end of the arc-shaped protrusion departing from the central region 21 along the radial direction of the bottle bottom 2, i.e. the distance from the head to the tail of the arc-shaped protrusion.

Referring to fig. 2, the distance from the bottom surface of the bottle bottom 2 of the central region 21 (i.e., the sum of H1 and H2) is 12mm to 15mm, such as 12mm, 13mm, 14mm, 15 mm. The above distance is the total height of the entire bottle bottom 2.

Referring to fig. 1 and 2, the height H1 of the central region 21 is 1/2-1/4 of the height H2 of the cambered surface region 22.

The height of the cambered surface area 22 is higher, the surface area of the whole bottle bottom 2 is larger, the bottle bottom 2 is more fully unfolded during bottle blowing by a two-step method, and the obtained bottle structure is more optimized.

According to the plastic bottle provided by the technical scheme, the surface area of the unfolded surface of the bottle bottom is larger, and the depth of the bottom die is deeper; when the semi-finished bottle blank is used for heating, stretching and blow molding, the hemisphere at the bottom of the bottle blank can be fully stretched under the action of the central area at the bottom of the bottle shape and the conical surface body at the side wall. By adopting the radian design of the conical surface body of the bottom side wall, the angle design of the conical surface inclination angle, the height design of the central area of the bottom and the like, the stretching track of the raw materials at the bottom of the bottle blank can be better conformed, so that the bottle-shaped bottom raw materials are reasonable and uniform in proportion, more raw materials can be stacked on the part of the bottle body, the physical properties of the bottle body, such as compression resistance, deformation resistance and the like, are improved, and the structure and the performance of the plastic bottle are improved.

Referring to fig. 2, the bottle bottom 2 is connected with the bottle body 1 through at least two steps 3.

Connect through two steps 3, be favorable to increasing the reliability that bottle end 2 and body 1 are connected, and make the surface area of bottle end 2 bigger.

The plastic bottle that above-mentioned technical scheme provided is when using semi-manufactured goods bottle base heating stretch blow molding for the raw materials of bottle type bottom can fully be stretched, reduces the bottom raw materials and piles up, improves physical properties such as body resistance to compression resistance to deformation, and shock resistance at the bottom of the reinforcing bottle reduces or even stops the convex risk in bottom.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: it is to be understood that modifications may be made to the above-described arrangements in the embodiments or equivalents may be substituted for some of the features of the embodiments, but such modifications or substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A plastic bottle, comprising:

a bottle body (1); and

the bottle bottom (2) is connected with the bottle body (1), the bottle bottom (2) protrudes towards the bottle opening of the bottle body (1), the bottle bottom (2) comprises a central area (21) and an arc area (22) surrounding the central area (21), and the arc area (22) is provided with a reinforcing structure (23) connected with the central area (21);

the height of the central region (21) is 1/2-1/4 of the height of the cambered surface region (22) so as to increase the surface area of the bottle bottom (2).

2. Plastic bottle according to claim 1, characterized in that the radius of the central area (21) is between 1.5mm and 3 mm.

3. The plastic bottle of claim 1, wherein said reinforcing structures (23) are present in a number of 4 to 8, each reinforcing structure (23) being arranged at intervals around the circumference of said central region (21).

4. Plastic bottle according to claim 1, characterized in that the cambered area (22) has a cambered radius of between 20mm and 30 mm.

5. The plastic bottle of claim 1, wherein said cambered surface region (22) has a bottom inclination of 40 ° to 50 °; and/or the inclination angle of the top of the cambered surface region (22) is 20-30 degrees.

6. The plastic bottle of claim 1, wherein said reinforcing structure (23) comprises:

the arc-shaped bulge is protruded towards one side of the bottle opening of the bottle body (1).

7. Plastic bottle according to claim 6, characterized in that the dimension of the end of the arched projection that is connected to the central region (21) is greater than the dimension of the other end of the arched projection that faces away from the central region (21).

8. The plastic bottle of claim 6, wherein said arcuate projections have a length of 10mm to 15 mm; and/or the width is 5 mm-8 mm; and/or the apex angle of the end of the arcuate projection facing away from the central region (21) is between 15 and 20 °.

9. The plastic bottle of claim 1, wherein said central region (21) is at a distance of 12mm to 15mm from the bottom surface of said bottom (2).

10. Plastic bottle according to claim 1, characterized in that the bottle bottom (2) is connected to the body (1) by at least two steps (3).