Double-layer high-sealing PET (Polyethylene Terephthalate) bottle

Abstract

The utility model discloses a double-layer high-sealing PET bottle, and relates to the technical field of PET bottles. The packaging bottle comprises a bottle body, a sleeve shell and a sealing cover, and is characterized in that a sealing film is adhered to a port of the upper end of the bottle body, a threaded groove for threaded connection of the sleeve shell is formed in the lower surface of the outer edge of the upper end of the bottle body, and an annular protrusion is integrally formed on the upper surface of the outer edge of the upper end of the bottle body; according to the PET double-layer bottle, the mode that an existing PET double-layer bottle is integrally formed is changed into the mode that the existing PET double-layer bottle is of a double-layer structure capable of being spliced, needed machining mold equipment is low in price compared with one-step injection blow molding, and due to the splicing structural design, the machining cost is reduced, and the machining efficiency is improved. And a PET (Polyethylene Terephthalate) film printed with advertisement propaganda words and an ingredient table can be placed between the sleeve shell and the bottle body, so that the self propaganda effect is achieved, and meanwhile, the situation that characters of the propaganda words or the ingredient table are scratched due to friction generated during transportation is avoided.

Description

Technical Field

[0001] The utility model belongs to the field of PET bottles, and specifically relates to a double-layer high-sealing PET bottle. Background Art

[0002] PET bottles have strong applicability and are widely used in daily necessities, daily chemical packaging and other fields. Due to their light weight, good preservation, and emphasis on heat resistance, pressure resistance and other technical trends, PET bottles have become the mainstream of drinking packaging today. Many beverages that require high-temperature sterilization before filling, such as flavored water, juice, dairy products, sports drinks, etc., are also packaged in PET bottles. PET bottles have become the main packaging material for beverage products. PET bottles have low environmental pollution and energy consumption. Today, as environmental awareness is on the rise, they are gradually replacing traditional packaging materials. With their heat resistance and pressure resistance, they have recently replaced various PVC bottles, bags, aluminum cans, iron cans, glass bottles, etc., becoming the packaging material with the greatest growth potential.

[0003] At present, when producing PET double-layer bottles, the inner bottle structure design in the prior art requires injection molding of the embryo tube first and then blowing the inner bottle. In theory, such a molding method requires the use of a one-step injection blow molding machine. Such a molding method is very expensive in terms of both machine and mold costs. In addition, when the bottle contains cosmetics or liquid medicine, the sealing between the bottle mouth and the bottle body should be ensured. In view of this, the present utility model is specially proposed. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a double-layer high-sealing PET bottle.

[0005] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0006] A double-layer high-sealing PET bottle, comprising a bottle body, a sleeve and a sealing cap, wherein a sealing film is bonded to the upper end of the bottle body, a thread groove for threading the sleeve is provided on the lower surface of the upper outer edge of the bottle body, an annular protrusion is integrally formed on the upper surface of the upper outer edge of the bottle body, and a thread for threading the sealing cap is provided on the outer side wall of the annular protrusion;

[0007] The inner bottom end of the sealing cover is provided with a protruding end for assisting in compacting the sealing film, and a special-shaped sealing sleeve is sleeved on the outside of the protruding end;

[0008] The sleeve is sleeved on the outside of the bottle body.

[0009] Optionally, the longitudinal section of one side of the special-shaped sealing sleeve is designed as an inverted L-shaped structure, and the material of the special-shaped sealing sleeve itself is medical silicone material.

[0010] Optionally, a PET film printed with advertising information is provided between the casing and the bottle body, and the PET film itself is made of a transparent material.

[0011] Optionally, the inner bottom end of the shell is integrally formed with an inner ring for the inner plug-in block to be plugged in, and the inner plug-in block is fixed to the outer bottom end of the bottle body, and the outer bottom end of the shell is integrally formed with an outer ring for the outer plug-in block to be plugged in, and the outer plug-in block is integrally formed on the top of the sealing cover.

[0012] Optionally, an annular sealing ring is bonded to the upper end of the shell, and the annular sealing ring itself is made of medical-grade silicone material, and the shell is a transparent material, and the color of the shell itself is dyed by a light-shielding masterbatch.

[0013] Optionally, a plurality of clamping blocks and clamping sleeves are provided on the wall of the housing, and a groove for clamping the clamping blocks is provided inside the clamping sleeve.

[0014] After adopting the above technical solution, the utility model has the following beneficial effects compared with the prior art. Of course, any product implementing the utility model does not necessarily need to achieve all the advantages described below at the same time:

[0015] 1. The utility model changes the existing one-piece molding method of PET double-layer bottles into a double-layer structure that can be assembled. The required processing mold equipment is cheaper than one-step injection blow molding. Thanks to the spliced ​​structural design, a PET film printed with advertising slogans and ingredient lists can be placed between the shell and the bottle body, which not only has its own publicity effect, but also will not cause the advertising slogans or ingredient list fonts to be scratched due to friction during transportation;

[0016] 2. The utility model provides a sealing film to seal the port of the bottle body as the first layer, a sealing cover threadedly connected to the annular protrusion as the second layer, and a special-shaped sealing sleeve provided outside the protruding end of the sealing cover as the third layer between the sealing cover and the annular protrusion. Therefore, the liquid inside the bottle body is in a highly sealed state through the above-mentioned multi-layer sealing;

[0017] 3. The utility model facilitates the later users to stack multiple devices by setting an outer sleeve ring in conjunction with an outer plug-in block, that is, multiple double-sided PET bottles can be stacked up and down by plugging the outer sleeve ring with the outer plug-in block. The provision of a card block and a card sleeve facilitates the later splicing and stacking of multiple devices, that is, the splicing can be completed through multiple shell card blocks and card sleeves, so that multiple bottle bodies can be spliced ​​into an integral structure, which is convenient for workers to pack multiple devices.

[0018] The specific implementation modes of the present utility model are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described below are only some embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0020] In the figure:

[0021] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the structure of the assembled parts of the sleeve shell, the clamping block and the clamping sleeve in a top view in the utility model;

[0023] Figure 3 It is a schematic diagram of the parts structure of the special-shaped sealing sleeve in the utility model;

[0024] Figure 4 This is a schematic diagram of the parts structure of the PET film in the utility model;

[0025] Figure 5 for Figure 1 Schematic diagram of the structure of the A part;

[0026] Figure 6 for Figure 1 Schematic diagram of the structure of part B.

[0027] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0028] 1. Bottle body; 2. Sealing film; 3. Sleeve shell; 4. Annular protrusion; 5. Sealing cover; 6. Protruding end; 7. Special-shaped sealing sleeve; 8. PET film; 9. Inner sleeve ring; 10. Inner plug-in block; 11. Outer plug-in block; 12. Outer sleeve ring; 13. Annular sealing ring; 14. Clamping block; 15. Clamping sleeve.

[0029] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0030] The utility model is now described in further detail with reference to the accompanying drawings.

[0031] See also Figures 1 to 6 The utility model provides a technical solution: a double-layer high-sealing PET bottle, comprising a bottle body 1, a sleeve shell 3 and a sealing cover 5, a sealing film 2 is bonded to the upper end of the bottle body 1, a thread groove for threading the sleeve shell 3 is provided on the lower surface of the upper outer edge of the bottle body 1, an annular protrusion 4 is integrally formed on the upper surface of the upper outer edge of the bottle body 1, and a screw thread for threading the sealing cover 5 is provided on the outer wall of the annular protrusion 4;

[0032] The inner bottom end of the sealing cover 5 is provided with a protruding end 6 for assisting in compacting the sealing film 2, and a special-shaped sealing sleeve 7 is sleeved on the outer side of the protruding end 6;

[0033] The sleeve 3 is sleeved on the outside of the bottle body 1. Considering that the existing PET double-layer bottle is processed by a one-step injection blow molding machine, which is costly, the utility model changes the existing PET double-layer bottle integral molding method into a double-layer structure that can be assembled. The required processing mold equipment is cheaper than the one-step injection blow molding. And thanks to the spliced ​​structural design, a PET film 8 printed with advertising slogans and ingredient lists can be placed between the sleeve 3 and the bottle body 1, which not only has its own publicity effect, but also will not cause the slogans or ingredient list fonts to be scratched due to the friction generated during transportation; considering that the bottle contains cosmetics When filling or removing liquid medicine, the sealing performance between the bottle mouth and the bottle body should be ensured. The utility model uses the sealing film 2, the special-shaped sealing sleeve 7 and the sealing cover 5 to perform multiple sealing functions on the port position of the bottle body 1, thereby ensuring the sealing performance of the device. The sealing film 2 is provided to perform the first layer of sealing on the port of the bottle body 1, the sealing cover 5 threadedly connected to the annular protrusion 4 performs the second layer of sealing, and the special-shaped sealing sleeve 7 provided outside the protruding end 6 of the sealing cover 5 performs the third layer of sealing between the sealing cover 5 and the annular protrusion 4. Therefore, the liquid inside the bottle body 1 is in a highly sealed state through the above-mentioned multi-layer sealing.

[0034] Among them, the single-side longitudinal section of the special-shaped sealing sleeve 7 is designed as an inverted L-shaped structure, and the material of the special-shaped sealing sleeve 7 itself is medical silicone material. By setting the special-shaped sealing sleeve 7, an auxiliary sealing effect is played between the annular protrusion 4 and the protruding end 6 of the sealing cover 5. And because its single-side section is designed as an inverted L-shaped structure, the upper end contact surface of the sealing cover 5 and the annular protrusion 4 can be sealed and protected, and the side wall of the annular protrusion 4 and the protruding end 6 of the sealing cover 5 can also be sealed and protected.

[0035] Among them, a PET film 8 printed with advertising information is provided between the casing 3 and the bottle body 1, and the material of the PET film 8 itself is a transparent material. By setting the casing 3 to adopt a transparent material, it is convenient for users to view the text information printed on the PET film 8 through the casing 3.

[0036] Among them, the inner bottom end of the shell 3 is integrally formed with an inner ring 9 for the inner plug-in block 10 to be plugged in, and the inner plug-in block 10 is fixed to the outer bottom end of the bottle body 1, and the outer bottom end of the shell 3 is integrally formed with an outer ring 12 for the outer plug-in block 11 to be plugged in, and the outer plug-in block 11 is integrally formed on the top of the sealing cover 5. By providing the inner ring 9 to cooperate with the inner plug-in block 10, it is convenient for workers to align the shell 3 and the bottle body 1 when assembling it, and it is ensured that the position will not be offset when the shell 3 is screwed into the outer edge of the bottle body 1. By providing the outer ring 12 to cooperate with the outer plug-in block 11, it is convenient for later users to stack multiple devices, that is, multiple double-sided PET bottles can be stacked up and down by plugging the outer ring 12 through the outer plug-in block 11.

[0037] Among them, an annular sealing ring 13 is bonded to the upper end of the shell 3, and the material of the annular sealing ring 13 itself is medical grade silicone material, and the shell 3 is a transparent material. The color of the shell 3 itself is dyed by a light-shielding masterbatch. By setting the annular sealing ring 13, a sealing effect is achieved between the shell 3 and the bottle body 1. The transparent material of the shell 3 makes it convenient for consumers to view the text information printed on the PET film 8, and the shell 3 uses a light-shielding material, which provides a light-shielding environment for the liquid in the bottle body 1.

[0038] Among them, a plurality of blocks 14 and sleeves 15 are provided on the wall of the shell 3, and a groove for the block 14 to be engaged is opened inside the sleeve 15. The block 14 and sleeve 15 are provided to facilitate the later splicing and stacking of multiple devices, that is, the splicing can be completed by multiple shell 3 blocks 14 and sleeves 15, so that multiple bottle bodies 1 can be spliced ​​into an integral structure, which is convenient for workers to pack multiple devices.

[0039] The present invention is not limited to the above-mentioned implementation modes. Anyone should be aware of the structural changes made under the inspiration of the present invention. Any technical solution that is the same or similar to the present invention falls within the protection scope of the present invention. The technology, shape, and structure that are not described in detail in the present invention are all known technologies.

Claims

1. A double-layer high-sealing PET bottle, comprising a bottle body (1), a casing (3) and a sealing cover (5), characterized in that: The upper end of the bottle body (1) is bonded with a sealing film (2), a thread groove for threaded connection of the sleeve (3) is provided on the lower surface of the upper outer edge of the bottle body (1), an annular protrusion (4) is integrally formed on the upper surface of the upper outer edge of the bottle body (1), and the outer side wall of the annular protrusion (4) is provided with a thread for threaded connection of the sealing cover (5); The inner bottom end of the sealing cover (5) is provided with a protruding end (6) for assisting in compacting the sealing film (2), and a special-shaped sealing sleeve (7) is sleeved on the outside of the protruding end (6); The sleeve (3) is sleeved on the outside of the bottle body (1).

2. A double-layer high-seal PET bottle according to claim 1, characterized in that: The longitudinal section of one side of the special-shaped sealing sleeve (7) is designed as an inverted L-shaped structure, and the material of the special-shaped sealing sleeve (7) itself is medical silicone material.

3. A double-layer high-seal PET bottle according to claim 1, characterized in that: A PET film (8) printed with advertising information is provided between the casing (3) and the bottle body (1), and the material of the PET film (8) itself is a transparent material.

4. A double-layer high-seal PET bottle according to claim 1, characterized in that: The inner bottom end of the casing (3) is integrally formed with an inner sleeve ring (9) for the inner plug-in block (10) to be plugged in, and the inner plug-in block (10) is fixed to the outer bottom end of the bottle body (1), and the outer bottom end of the casing (3) is integrally formed with an outer sleeve ring (12) for the outer plug-in block (11) to be plugged in, and the outer plug-in block (11) is integrally formed on the top of the sealing cover (5).

5. A double-layer high-seal PET bottle according to claim 1, characterized in that: An annular sealing ring (13) is bonded to the upper end of the casing (3), and the annular sealing ring (13) is made of medical-grade silicone material. The casing (3) is made of a transparent material, and the color of the casing (3) is dyed with a light-shielding masterbatch.

6. A double-layer high-seal PET bottle according to claim 1, characterized in that: A plurality of clamping blocks (14) and clamping sleeves (15) are arranged on the wall of the sleeve (3), and a groove for clamping the clamping blocks (14) is provided inside the clamping sleeve (15).

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