Plastic bottle for containing drinking liquid

Abstract

The plastic bottle comprises a mouth portion, a shoulder portion, a body portion and a bottom portion which are sequentially connected from top to bottom, and the bottom portion comprises a transition section and a bottom face which is located below the transition section, connected with the transition section and used for making contact with a bearing face. The body part comprises a transition section, an included angle between the normal of more than 50% of the surface of the transition section and the vertical direction is more than 90 degrees, the body part comprises a bottom body section which is positioned above the transition section and is connected with the transition section, and an included angle between the normal of more than 50% of the surface of the bottom body section and the vertical direction is less than or equal to 90 degrees; the plastic bottle further comprises a plurality of strip-shaped grooves, and the strip-shaped grooves extend to the bottom body section from the transition section.

Description

Technical Field

[0001] This utility model relates to the technical field of containers for holding drinking liquids, and particularly to a plastic bottle for holding drinking liquids. Background Technology

[0002] Plastic bottles are widely used in daily life, commonly for holding drinking liquids, such as beverage bottles and mineral water bottles. To control costs while meeting performance requirements, plastic bottles are typically designed to be relatively thin, manufactured using processes like blow molding. When used to hold drinking liquids or when stacked in cases (boxes), the bottom of the plastic bottle bears significant pressure; insufficient strength can easily lead to deformation. Utility Model Content

[0003] The purpose of this invention is to provide a plastic bottle with high pressure resistance and resistance to deformation for holding drinking liquids.

[0004] This utility model discloses a plastic bottle for holding drinking liquids, comprising: a mouth, a shoulder, a body, and a bottom connected sequentially from top to bottom. The bottom includes a transition section and a bottom surface located below the transition section and connected to the transition section for contacting a bearing surface. The angle between the normal of more than 50% of the surface of the transition section and the vertical direction is greater than 90°. The body includes a bottom body section located above the transition section and connected to the transition section. The angle between the normal of more than 50% of the surface of the bottom body section and the vertical direction is less than or equal to 90°. The plastic bottle also includes a plurality of strip-shaped grooves extending from the transition section to the bottom body section.

[0005] In some embodiments, the strip-shaped groove extends from the middle of the bottom surface to the bottom body section.

[0006] In some embodiments, the plastic bottle includes a circular groove located at the center of the bottom surface, and a plurality of strip grooves are evenly distributed along the circumference of the plastic bottle and connected to the circular groove.

[0007] In some embodiments, the surface of the base section is parallel to the vertical direction, and the surface of the transition section includes an arc-shaped transition surface.

[0008] In some embodiments, the plastic bottle has a capacity of 500-600ml, and the strip-shaped groove extends to a height of 1.6-1.8mm on the bottom section.

[0009] In some embodiments, a plurality of planes disposed on the arcuate transition surface are also included.

[0010] In some embodiments, a plane is provided between two adjacent grooves of the strip, and the plurality of planes have the same shape.

[0011] In some embodiments, the shoulder portion has a radial dimension that gradually decreases from bottom to top, and the outer surface of the shoulder portion is provided with a plurality of patterned portions along the circumferential direction, the patterned portions including grooves.

[0012] In some embodiments, the patterned portion includes a plurality of strip-shaped grooves spaced apart in a direction from small to large.

[0013] In some embodiments, the plurality of patterned portions have the same shape, and the patterned portion includes arc-shaped grooves, wherein the spacing between two adjacent arc-shaped grooves in a patterned portion is the same.

[0014] Based on the plastic bottle for holding drinking liquids provided by this utility model, by setting multiple strip-shaped grooves extending from the bottom transition section to the bottom body section, the surface shape of the transition section is transformed, with more folded edge structures, which improves the bottom's resistance to deformation. At the same time, since the strip-shaped grooves extend to the bottom body section connected to the transition section, the resistance to deformation of the transition section can be further improved, thus effectively enhancing the pressure-bearing and deformation-resistant capacity of the plastic bottle.

[0015] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the structure of a plastic bottle for holding drinking liquids according to an embodiment of the present invention;

[0018] Figure 2 for Figure 1 A structural diagram of the plastic bottle from another angle is shown;

[0019] Figure 3 for Figure 2 An enlarged schematic diagram of a portion of the plastic bottle shown;

[0020] Figure 4 for Figure 1 A top view structural diagram of the plastic bottle shown;

[0021] Figure 5 for Figure 1The diagram shows a top-view structural diagram of the plastic bottle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0024] In the description of this utility model, it should be understood that the use of terms such as "first" and "second" to define the components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0027] like Figures 1 to 5 As shown, the plastic bottle for holding drinking liquids in this embodiment includes a mouth 1, a shoulder 2, a body 3, and a bottom 4 connected sequentially from top to bottom. The mouth 1 is the bottle opening, used for inputting and outputting liquid. The shoulder 2 is the bottle shoulder. The body 3 is the bottle body, also the main body, and its surrounding cavity accommodates most of the liquid. The bottom 4 is the bottle bottom, mainly used to bear pressure. In this application, the directions "upper" and "lower" are based on the direction of the bottom 4 when the plastic bottle is filled with liquid and placed on a horizontal surface. At this time, the bottom 4 is at the bottom of the plastic bottle, and the mouth 1 is at the top. When the plastic bottle has a rotating structure, the direction of the central axis of the plastic bottle is vertical.

[0028] The bottom 4 includes a transition section 41 and a bottom surface 42 located below and connected to the transition section 41 for contact with a bearing surface. When placing the plastic bottle, the bottom surface 42 contacts the bearing surface such as the ground, transmitting pressure to the bearing surface. The angle between the normal to more than 50% of the surface of the transition section 41 (referring to the outer surface) and the vertical direction is greater than 90°. This angle refers to the angle between a ray pointing from below to above (the vertical direction) and a ray pointing from the surface of the transition section away from the plastic bottle (the normal to the surface of the transition section). In other words, when the angle between the normal to the surface of the transition section and the vertical direction is greater than 90°, the surface of the transition section faces downwards. More than 50% of the surface of the transition section 41 refers to the portion of the surface of the transition section with an area greater than 50%. The body 3 includes a bottom section located above and connected to the transition section 41. The angle between the normal to more than 50% of the surface of the bottom section (referring to the outer surface) and the vertical direction is less than or equal to 90°. This angle refers to the angle between a ray pointing from below to above (the vertical direction) and a ray pointing from the surface of the bottom section away from the plastic bottle (the normal to the surface of the bottom section). In other words, when the angle between the normal to the surface of the bottom section and the vertical direction is less than 90°, the surface of the bottom section faces upwards. More than 50% of the surface of the bottom section refers to the portion of the bottom section's surface with an area greater than 50%. For example... Figure 2 and Figure 3 As shown, the plastic bottle also includes multiple strip-shaped grooves 51, which extend from the transition section 41 to the bottom section. That is, the strip-shaped grooves 51 cross the boundary line between the bottom section and the transition section and are distributed in both the transition section and the bottom section.

[0029] The plastic bottle for holding drinking liquids in this embodiment has multiple strip-shaped grooves 51 extending from the transition section 41 at the bottom 4 to the bottom body section, which makes the surface shape of the transition section 41 different and has more folded edge structures, thereby improving the deformation resistance of the bottom 4. At the same time, since the strip-shaped grooves 51 extend to the bottom body section 31 connected to the transition section 41, they can further support the deformation resistance of the transition section from the bottom body section side, thereby improving the deformation resistance of the transition section 41 and effectively enhancing the pressure resistance and deformation resistance of the plastic bottle.

[0030] In some embodiments, such as Figure 5 As shown, the strip-shaped groove 51 extends from the middle of the bottom surface 42 of the bottom 4 to the bottom body section 31. The strip-shaped groove 51 in this embodiment can improve the deformation resistance of the transition section and the deformation resistance of the bottom surface. The strip-shaped groove can simultaneously enhance the deformation resistance of multiple parts, with a simple structure and outstanding effect.

[0031] In some embodiments, such as Figure 5 As shown, the plastic bottle includes a circular groove in the center of the bottom surface 42 of the bottom 4, and a plurality of strip-shaped grooves 51 are evenly distributed along the circumference of the plastic bottle and connected to the circular groove. In the embodiment shown, the plurality of strip-shaped grooves 51 include ten strip-shaped grooves 51 evenly distributed along the circumference. The circular groove in this embodiment can further enhance the deformation resistance of the bottom surface, and also facilitates the centering and alignment between the bottom of the upper plastic bottle and the top of the lower plastic bottle when stacking plastic bottles. The connection between the strip-shaped grooves and the circular grooves also facilitates gas communication between the strip-shaped grooves and the circular grooves when the plastic bottle is manufactured by blow molding, which is convenient for mold manufacturing and demolding.

[0032] In some embodiments, such as Figures 1 to 3 As shown, the surface of the base section 31 is parallel to the vertical direction, meaning the angle between the normal to the surface of the base section 31 and the vertical direction is 90°. The surface of the transition section 41 includes an arc-shaped transition surface, as shown in the figure. This embodiment facilitates the manufacturing of plastic bottles.

[0033] In some embodiments, the plastic bottle has a capacity of 500-600 ml, such as Figure 3 As shown, the height h of the strip-shaped groove 51 extending on the bottom section 31 is 1.6~1.8mm. Researchers have found that for plastic bottles with a capacity of 500~600ml, such as a 550ml bottle, when h is less than 1.6mm, the arc-shaped transition surface of the transition section has poor resistance to deformation; when h is greater than 1.8mm, manufacturing becomes difficult in the blow molding process. The height h of the strip-shaped groove 51 extending on the bottom section 31 is 1.6~1.8mm, representing a preferred range that balances manufacturing convenience with good pressure and deformation resistance.

[0034] In some embodiments, such as Figures 1 to 3 and Figure 5 As shown, the plastic bottle also includes multiple planes 52 disposed on the curved transition surface. Distributing multiple planes 52 on the curved transition surface can further enhance its resistance to deformation.

[0035] In some embodiments, a plane 52 is provided between two adjacent strip-shaped grooves 51, and multiple planes 52 have the same shape. This embodiment enables the deformation resistance of the transition section to be more uniform in the circumferential direction, and the structure such as the plane 52 is also easier to manufacture.

[0036] In some embodiments, such as Figure 1 and Figure 2As shown, the shoulder 2 gradually decreases in radial dimension from bottom to top, and multiple patterned portions, including grooves, are provided circumferentially on the outer surface of the shoulder 2. Providing multiple grooved patterned portions on the shoulder can improve its resistance to deformation and also increase its friction, making it easier to grip.

[0037] In some embodiments, the patterned portion includes a plurality of strip-shaped grooves spaced apart in a direction from small to large. The patterned portion of this embodiment is easy to manufacture and provides a good grip.

[0038] In some embodiments, multiple patterned portions have the same shape, and each patterned portion includes an arc-shaped groove 21. Within a patterned portion, the spacing between two adjacent arc-shaped grooves 21 is the same. This embodiment facilitates the processing and manufacturing of the patterned portions, while also contributing to greater friction when gripping the shoulder and a more aesthetically pleasing appearance.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A plastic bottle for containing a potable liquid, characterised in that, include: The bottle comprises, from top to bottom, a mouth, a shoulder, a body, and a bottom. The bottom includes a transition section and a bottom surface located below the transition section and connected to it for contact with a bearing surface. The normal of more than 50% of the surface of the transition section forms an angle greater than 90° with the vertical direction. The body includes a bottom body section located above the transition section and connected to it. The normal of more than 50% of the surface of the bottom body section forms an angle less than or equal to 90° with the vertical direction. The plastic bottle also includes multiple strip-shaped grooves extending from the transition section to the bottom body section.

2. The plastic bottle of claim 1, wherein, The strip-shaped groove extends from the middle of the bottom surface to the bottom body section.

3. The plastic bottle of claim 2, wherein, The plastic bottle includes a circular groove located in the center of the bottom surface, and a plurality of strip-shaped grooves are evenly distributed along the circumference of the plastic bottle and connected to the circular groove.

4. The plastic bottle as described in any one of claims 1 to 3, characterized in that, The surface of the bottom section is parallel to the vertical direction, and the surface of the transition section includes an arc-shaped transition surface.

5. The plastic bottle of claim 4, wherein The plastic bottle has a capacity of 500-600ml, and the strip-shaped groove extends to a height of 1.6-1.8mm on the bottom section.

6. The plastic bottle of claim 5, wherein, It also includes multiple planes disposed on the arc-shaped transition surface.

7. The plastic bottle of claim 6, wherein A plane is provided between two adjacent strip-shaped grooves, and the plurality of planes have the same shape.

8. The plastic bottle of claim 1, wherein, The shoulder gradually decreases in radial dimension from bottom to top, and the outer surface of the shoulder is provided with a plurality of patterned portions along the circumferential direction, the patterned portions including grooves.

9. The plastic bottle of claim 8, wherein, The patterned portion includes multiple strip-shaped grooves spaced apart in a direction from small to large.

10. The plastic bottle of claim 9, wherein The multiple patterned portions have the same shape, and each patterned portion includes an arc-shaped groove. Within a patterned portion, the spacing between two adjacent arc-shaped grooves is the same.

Images