A biaxially oriented, multi-shaped PET polyester bottle

By setting telescopic tubes at both ends of the polyester bottle and equipping them with support and elastic components, the problem of polyester bottles easily shrinking or tilting after stretching is solved, achieving stable bidirectional stretching and volume expansion effects.

CN224428330UActive Publication Date: 2026-06-30QINGDAO CHANGSU PACKAGING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
QINGDAO CHANGSU PACKAGING CO LTD
Filing Date
2025-07-01
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing biaxially stretchable multi-shaped PET polyester bottles are prone to shrinkage or tilting due to external pressure after stretching, lacking an effective support structure.

Method used

Telescopic tubes are installed at the upper and lower ends of the polyester bottle body, and support components and elastic components are installed on both sides of them. The support components include a mounting box, meshing teeth, movable plates and locking teeth, and the elastic components include a fixed tube, a movable rod and a spring. The telescopic tubes are supported by meshing and elastic structures to maintain stability.

Benefits of technology

It achieves bidirectional stretching of the polyester bottle to increase its volume, while maintaining stability after stretching to avoid shrinkage or tilting, thus enhancing its stability in use.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model discloses a biaxially stretchable multi-shaped PET polyester bottle, comprising: a polyester bottle body and two bottle caps, and further comprising: bottle openings located at the upper and lower ends of the polyester bottle body, each of the two bottle openings being connected to a telescopic tube, and each of the two telescopic tubes having a mounting ring connected to the opposite end, and each of the two mounting rings having a bottle cap screwed to the opposite end, and support components installed at both ends of the upper and lower outer walls of the polyester bottle body. This utility model's biaxially stretchable multi-shaped PET polyester bottle, by providing two telescopic tubes at the upper and lower ends of the polyester bottle body, enables biaxial stretching of the polyester bottle body, increasing its volume. The support components on both sides of the telescopic tubes provide support, and during stretching, the support components change with the length of the telescopic tubes, maintaining continuous support and preventing the stretched portion of the polyester bottle from easily shrinking or tilting under external pressure after stretching.
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Description

Technical Field

[0001] This utility model relates to the field of polyester bottle technology, specifically to a biaxially stretchable, multi-shaped PET polyester bottle. Background Technology

[0002] A search revealed that Chinese Patent (Application No. 202122204314.1) discloses "A Biaxially Stretchable Multi-Shape PET Polyester Bottle". This biaxially stretchable multi-shape PET polyester bottle is composed of a polyester bottle body, a base, a stretchable bottle body, and a bottle cap. The bottle body can be biaxially stretched by pulling the handle and the base, thereby saving space and improving the performance of the polyester bottle body.

[0003] However, the stretchable bottle body inside the polyester bottle lacks a support structure. After the polyester bottle is stretched, it is prone to shrinkage or tilting when subjected to external pressure. Utility Model Content

[0004] The purpose of this invention is to provide a biaxially stretchable, multi-shaped PET polyester bottle to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a biaxially stretchable multi-shaped PET polyester bottle, comprising: a polyester bottle body and two bottle caps, and further comprising: bottle mouths disposed at the upper and lower ends of the polyester bottle body, each of the two bottle mouths being connected to a telescopic tube, and each of the two telescopic tubes having a mounting ring connected to a point away from each other, each of the two mounting rings having a bottle cap screwed to a point away from each other, and each of the upper and lower outer walls of the polyester bottle body having a support assembly installed at both ends, and one end of the support assembly being connected to an elastic assembly, the end of the elastic assembly away from the support assembly being fixed to the outer wall of the corresponding mounting ring.

[0006] Limit openings are provided at both ends of the outer wall of the mounting ring.

[0007] The support assembly includes a mounting box, multiple equidistant meshing teeth mounted on the inner wall of one side of the mounting box, a movable plate located inside the mounting box, and locking teeth mounted on the outer wall of one side of the movable plate.

[0008] The movable plate passes through the limiting opening.

[0009] The elastic component includes a fixed tube, a movable rod slidably connected to the inner wall of the fixed tube, and a spring disposed inside the fixed tube.

[0010] The end of the movable rod away from the fixed tube is connected to the outer wall of one side of the movable plate.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model discloses a bidirectional stretchable multi-shaped PET polyester bottle. By setting two telescopic tubes at the upper and lower ends of the polyester bottle body, the bottle body can be stretched bidirectionally to expand its volume. The support components set on both sides of the telescopic tubes can support the telescopic tubes. When stretching the telescopic tubes, the support components can change with the length of the telescopic tubes to maintain the support function of the telescopic tubes. This prevents the stretched part of the polyester bottle from shrinking or tilting when subjected to external pressure after stretching. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention;

[0014] Figure 2 This is an external structural view of the present invention;

[0015] Figure 3 This is a structural diagram of the mounting ring of this utility model;

[0016] Figure 4 This is a structural diagram of the support component and elastic component of this utility model.

[0017] In the diagram: 1. Polyester bottle body; 2. Telescopic tube; 3. Mounting ring; 4. Bottle cap; 5. Support assembly; 501. Mounting box; 502. Engaging teeth; 503. Movable plate; 504. Clamping teeth; 6. Elastic assembly; 601. Fixed tube; 602. Movable rod; 603. Spring; 7. Limiting port. Detailed Implementation

[0018] 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 The present invention provides a biaxially stretchable multi-shaped PET polyester bottle, comprising: a polyester bottle body 1 and two bottle caps 4, and further comprising: bottle mouths located at the upper and lower ends of the polyester bottle body 1, each bottle mouth being connected to a telescopic tube 2, and each telescopic tube 2 having a mounting ring 3 connected to the opposite end, each mounting ring 3 having a bottle cap 4 screwed to the opposite end, and each of the upper and lower outer walls of the polyester bottle body 1 having a support component 5 installed at both ends, and one end of the support component 5 being connected to an elastic component 6, the opposite end of the elastic component 6 being fixed to the outer wall of the corresponding mounting ring 3.

[0020] It should be noted that by setting two telescopic tubes 2 at the upper and lower ends of the polyester bottle body 1, the polyester bottle body 1 can be stretched in both directions to expand its volume. The support components 5 set on both sides of the telescopic tube 2 can support the telescopic tube 2. When stretching the telescopic tube 2, the tops of the support components 5 on both sides of the telescopic tube 2 can be pressed, so that the tops of the two support components 5 are brought close to each other, and the two elastic components 6 are squeezed respectively. At this time, the telescopic tube 2 can be stretched, and the two support components 5 are stretched at the same time. After the telescopic tube 2 is stretched, the tops of the two support components 5 can be released. Under the action of the two elastic components 6, the tops of the two support components 5 will return to their original position and can support the telescopic tube 2 again. This prevents the polyester bottle from shrinking or tilting when subjected to external pressure after stretching.

[0021] In a preferred embodiment, the support assembly 5 includes a mounting box 501, a plurality of equidistant meshing teeth 502 mounted on the inner wall of one side of the mounting box 501, a movable plate 503 disposed inside the mounting box 501, and a retaining tooth 504 mounted on the outer wall of one side of the movable plate 503; both ends of the outer wall of the mounting ring 3 have limit openings 7; the movable plate 503 passes through the limit openings 7; the elastic assembly 6 includes a fixed tube 601, a movable rod 602 slidably connected to the inner wall of the fixed tube 601, and a spring 603 disposed inside the fixed tube 601; the end of the movable rod 602 away from the fixed tube 601 is connected to the outer wall of one side of the movable plate 503.

[0022] It should be noted that: the tops of the two movable plates 503 can be pressed down to bring them closer together. At this time, the locking teeth 504 on the movable plates 503 can be pulled out from between the corresponding meshing teeth 502, and the movable rod 602 moves into the fixed tube 601, compressing the spring 603. At this time, the movable plates 503 can move together with the extension tube 2. When the extension tube 2 is extended to the appropriate position, the two movable plates 503 can be released. The movable plates 503 return to their horizontal position under the action of the spring 603, and the locking teeth 504 re-insert between the corresponding meshing teeth 502 to limit the movement of the movable plates 503. The movable plates 503 and the mounting box 501 can provide support for the extension tube 2.

[0023] Working principle: By setting two telescopic tubes 2 at the upper and lower ends of the polyester bottle body 1, the polyester bottle body 1 can be stretched in both directions to expand its volume. The support components 5 set on both sides of the telescopic tube 2 can support the telescopic tube 2. When stretching the telescopic tube 2, the tops of the two movable plates 503 can be pressed to bring them closer together. At this time, the locking teeth 504 on the movable plates 503 can be pulled out from between the corresponding meshing teeth 502, and drive the movable rod 602 to move into the fixed tube 601, compressing the spring 603. At this time, the movable plates 503 can move together with the stretching of the telescopic tube 2. When the telescopic tube 2 is stretched to the appropriate position, the two movable plates 503 can be released. The movable plates 503 return to their horizontal position under the action of the spring 603, and the locking teeth 504 re-insert between the corresponding meshing teeth 502 to limit the movement of the movable plates 503. The movable plates 503 and the mounting box 501 can support the telescopic tube 2, preventing the stretched part from shrinking or tilting when subjected to external pressure after the polyester bottle is stretched.

[0024] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A biaxially oriented, multi-shaped PET polyester bottle, comprising: Polyester bottle body (1) and two bottle caps (4); The invention is characterized by further comprising: bottle mouths located at the upper and lower ends of the polyester bottle body (1), each of the two bottle mouths being connected to a telescopic tube (2), and each of the two telescopic tubes (2) being connected to an installation ring (3) at the opposite end, each of the two installation rings (3) being screwed to an end with a bottle cap (4), and each of the upper and lower outer walls of the polyester bottle body (1) being equipped with a support assembly (5), and one end of the support assembly (5) being connected to an elastic assembly (6), the end of the elastic assembly (6) away from the support assembly (5) being fixed to the outer wall of the corresponding installation ring (3).

2. A bi-stretchable multi-shape PET polyester bottle as claimed in claim 1, wherein: The mounting ring (3) has limit openings (7) at both ends of its outer wall.

3. A bi-stretchable multi-shape PET polyester bottle as claimed in claim 2, wherein: The support assembly (5) includes a mounting box (501), a plurality of equally spaced meshing teeth (502) installed on the inner wall of one side of the mounting box (501), a movable plate (503) located inside the mounting box (501), and a locking tooth (504) installed on the outer wall of one side of the movable plate (503).

4. A bi-stretchable multi-shape PET polyester bottle as claimed in claim 3, wherein: The movable plate (503) passes through the limiting port (7).

5. A bi-stretchable multi-shape PET polyester bottle as claimed in claim 3, wherein: The elastic component (6) includes a fixed tube (601), a movable rod (602) slidably connected to the inner wall of the fixed tube (601), and a spring (603) disposed inside the fixed tube (601).

6. A bi-stretchable multi-shape PET polyester bottle as claimed in claim 5, wherein: The end of the movable rod (602) away from the fixed tube (601) is connected to the outer wall of one side of the movable plate (503).