Contracted bottle

Abstract

The utility model discloses an inward shrinkage bottle which comprises a bottle body, the bottle body is a cavity with an opening in the top, the bottle body comprises a PET supporting layer and a composite shrinkage layer arranged on the inner wall of the PET supporting layer, and air holes are formed in the bottom of the PET supporting layer and used for air to enter. The utility model has the beneficial effects that by arranging the composite shrinkage layer (consisting of the EVOH barrier layer and the PET packaging layer) and the one-way pressing pump head assembly, the bottle body can be automatically shrunk in the process of extracting liquid in the bottle body, so that residues of articles in the bottle are effectively reduced; articles in the bottle can be more thoroughly utilized, and the use efficiency of the product is improved; due to the arrangement of the interlocking assembly (comprising a limiting rod and a limiting part), the pump head is effectively prevented from being mistakenly touched and pressed in the carrying process, and the portability and safety of the product are improved; when the inner shrinkage bottle needs to be carried, the pump head only needs to be rotated to enable the limiting rod to enter the limiting groove, and therefore the position of the pump head is locked.

Description

Technical Field

[0001] This utility model relates to the field of packaging bottle technology, specifically to a shrink-in bottle. Background Technology

[0002] Barrier bottles were developed to address the issues of preserving and maintaining the freshness of contents within packaging containers. Early containers primarily used materials such as glass and metal, but these suffered from fragility, weight, and high cost. With advancements in polymer materials science, plastics have become a commonly used material in the packaging industry.

[0003] Most existing barrier bottles have a one-piece structure, requiring manual pressing and squeezing during use. This often results in significant residue remaining inside, leading to resource waste. For consumers, this means more frequent product purchases, increasing usage costs. Utility Model Content

[0004] The purpose of this invention is to provide a shrink-in 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 shrink-in bottle, comprising:

[0006] The bottle body is a cavity with an opening at the top. The bottle body includes a PET support layer and a composite shrink layer disposed on the inner wall of the PET support layer. The bottom of the PET support layer has a vent hole for air to enter.

[0007] A one-way press pump head assembly is assembled on the top of the bottle body. The one-way press pump head assembly includes a pump seat threaded to the top of the bottle body. A piston extraction part for drawing liquid from the inside of the bottle body is installed inside the pump seat. A pump head for driving the piston extraction part is slidably arranged on the top of the pump seat. Under the action of the pump head and the piston extraction part, the bottle body is subjected to atmospheric pressure, which will separate the composite shrinkage layer, so that the contents of the bottle are gradually squeezed out and used up.

[0008] An interlocking assembly is located inside the pump base. The interlocking assembly includes a limiting rod that is detachably installed at the bottom of the pump head. The pump base is provided with a limiting part that interlocks with the limiting rod to prevent the pump head from being accidentally pressed.

[0009] Preferably, the composite shrink layer consists of an EVOH barrier layer and a PET packaging layer, with the EVOH barrier layer located on the side closest to the PET support layer.

[0010] Preferably, the piston extraction part includes a pump barrel, the pump barrel is fixedly connected inside the pump base, a liquid inlet check valve is installed inside the pump barrel, and a pump tube seat is installed on the top of the pump barrel.

[0011] Preferably, a pump tube is slidably installed inside the pump tube seat, and a spring for driving the pump tube to return to its original position is sleeved on the outside of the pump tube. The pump head is inserted into the pump tube, and a discharge channel communicating with the pump tube is provided inside the pump head.

[0012] Preferably, a piston is installed inside the pump barrel and below the pump tube seat, and a liquid outlet check valve is slidably installed inside the piston.

[0013] Preferably, the limiting rod has an arc-shaped structure and the center of the arc is located below the limiting rod.

[0014] Preferably, the limiting part includes a vertical groove that is vertically opened on the outside of the pump seat, a horizontal groove is opened at the top of the vertical groove, and a limiting groove is opened at the bottom of the inner wall of the horizontal groove for locking the positioning limiting rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting a composite shrinkage layer (composed of an EVOH barrier layer and a PET packaging layer) and a one-way pressing pump head assembly, the bottle can automatically shrink during the process of internal liquid extraction, effectively reducing the residue of the contents inside the bottle; this allows the contents inside the bottle to be utilized more thoroughly, improving the product's efficiency; the interlocking assembly (including a limiting rod and a limiting part) effectively prevents the pump head from being accidentally pressed during carrying, improving the product's portability and safety; when it is necessary to carry the shrinkage bottle, simply rotating the pump head will allow the limiting rod to enter the limiting groove, thereby locking the pump head position. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the bottle body of this utility model;

[0018] Figure 3 This is an exploded view of the present invention;

[0019] Figure 4 This is a schematic diagram of the structure of the composite shrinkage layer of this utility model when it is not separated;

[0020] Figure 5 This is a schematic diagram of the structure of the composite shrinkage layer of this utility model during separation;

[0021] Figure 6 This is a schematic diagram of the limiting groove of this utility model.

[0022] In the picture:

[0023] 100. One-way press pump head assembly; 110. Pump head; 111. Limiting rod; 120. Pump tube; 130. Spring; 140. Pump tube seat; 150. Piston; 160. Discharge check valve; 170. Pump seat; 171. Horizontal groove; 172. Limiting groove; 173. Vertical groove; 180. Inlet check valve; 190. Pump barrel;

[0024] 200. Bottle body; 210. PET support layer; 220. EVOH barrier layer; 230. PET packaging layer; 240. Vent holes. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1 , 2 As shown in Figures 3, 4, 5, and 6, this utility model provides a technical solution: a shrink-fit bottle, comprising: a bottle body 200, which is a cavity with an opening at the top; the bottle body 200 includes a PET support layer 210 and a composite shrink-fit layer disposed on the inner wall of the PET support layer 210; a vent hole 240 is provided at the bottom of the PET support layer 210 for air to enter; and a one-way press pump head assembly 100, which is assembled on the top of the bottle body 200 and includes a pump seat 170 threadedly connected to the top of the bottle body 200. The pump seat 170 is equipped with a piston extraction part for extracting liquid from the bottle 200. The top of the pump seat 170 is slidably equipped with a pump head 110 for driving the piston extraction part. Under the action of the pump head 110 and the piston extraction part, the bottle 200 is subjected to atmospheric pressure, which will separate the composite shrinkage layer, so that the contents of the bottle are gradually squeezed out and used up. The interlocking assembly is placed inside the pump seat 170. The interlocking assembly includes a limiting rod 111 threadedly connected to the bottom of the pump head 110. The pump seat 170 is provided with a limiting part that interlocks with the limiting rod 111 to prevent the pump head 110 from being accidentally pressed.

[0027] It should be noted that in this embodiment, when the pump head 110 is pressed, the piston extraction part collects the liquid inside the composite shrinkage layer. Under the action of the inlet and outlet liquid one-way valve of the piston extraction part, a negative pressure is formed inside the bottle body 200. Atmosphere enters the bottle body 200 through the vent 240. Under the action of atmospheric pressure, the bottle body 200 will separate the PET packaging layer 230 + EVOH barrier layer 220 composite shrinkage layer. The outer PET support layer 230 of the bottle body 200 does not shrink. Under the action of the sealing ring and the one-way valve, the bottle body 200 will not separate the PET packaging layer 230 + EVOH barrier layer 220 composite shrinkage layer before the one-way press pump head assembly 100 is used for the first time. When not in use, the pump head 110 is rotated, causing the pump head 110 to drive the limiting rod 111 to rotate into the limiting part. By limiting the limiting rod 111, accidental pressing of the pump head 110 during carrying is prevented.

[0028] In one embodiment, the composite shrink layer consists of an EVOH barrier layer 220 and a PET packaging layer 230, with the EVOH barrier layer 220 located on the side close to the PET support layer 210.

[0029] It should be noted that in this embodiment, through internal circulation extraction of the bottle 200, under negative pressure, the PET packaging layer 230 + EVOH barrier layer automatically separates and shrinks, effectively reducing the residue of items inside the bottle. Furthermore, the EVOH barrier layer effectively prevents the penetration of gases and moisture such as oxygen, carbon dioxide, and water vapor. This can significantly extend the product's shelf life. The PET packaging layer possesses excellent physical properties, such as strength, rigidity, and transparency; working together with the EVOH, it enhances the overall protective properties of the packaging.

[0030] In one embodiment, the piston extraction section includes a pump barrel 190, the pump barrel 190 is fixedly connected inside the pump seat 170, an inlet check valve 180 is installed inside the pump barrel 190, a pump tube seat 140 is installed on the top of the pump barrel 190, a pump tube 120 is slidably installed inside the pump tube seat 140, a spring 130 for driving the pump tube 120 to reset is sleeved on the outside of the pump tube 120, a pump head 110 is inserted into the pump tube 120, a discharge channel communicating with the pump tube 120 is provided inside the pump head 110, and a piston 150 is installed inside the pump barrel 190 and below the pump tube seat 140, and an outlet check valve 160 is slidably installed inside the piston 150.

[0031] It should be noted that in this embodiment, when the pump head 110 is pressed, the piston 150 moves downward, the volume inside the pump cylinder 190 decreases, and the pressure increases. At this time, the inlet check valve 180 closes, preventing liquid from flowing back from below; while the outlet check valve 160 opens, and under pressure, the liquid inside the pump cylinder 190 is squeezed out and flows out through the outlet check valve 160. When the pump head 110 is released, the piston 150 moves upward under the action of the spring 130, the volume inside the pump cylinder 190 increases, and the pressure decreases. At this time, the liquid outlet check valve 160 is closed to prevent liquid from flowing back from the outlet; the liquid inlet check valve 180 is opened, and under atmospheric pressure, the liquid in the bottle is forced into the pump cylinder 190, completing one liquid suction process. During the liquid suction process, the bottle body 200 will shrink under atmospheric pressure. Under the action of the air pressure difference formed by air entering through the vent 240, the bottle body 200 will separate into the PET packaging layer 230 + EVOH barrier layer 220 composite shrink layer; the outer PET support layer 230 of the bottle body 200 does not shrink, and the shrink layer will continue to shrink inward with the increase of the number of uses, so that the contents of the bottle are gradually pumped out and used up, realizing the shrink function of the inner shrink bottle.

[0032] In one embodiment, the limiting rod 111 has an arc-shaped structure and the center of the arc is located below the limiting rod 111. The limiting part includes a vertical groove 173 that is vertically opened on the outside of the pump seat 170. A transverse groove 171 is opened at the top of the vertical groove 173. A limiting groove 172 is opened at the bottom of the inner wall of the transverse groove 171 for locking the positioning limiting rod 111.

[0033] It should be noted that in this embodiment, the limiting rod 111 is an elastic polypropylene rod. The transverse groove 171 and the vertical groove 173 form a T-shaped limiting groove. When the limiting rod 111 rotates into the vertical groove 173, the limiting rod 111 slides inside the vertical groove 173 by pressing the pump head 110, thereby squeezing out the internal liquid. Under the action of the spring 130, in its natural state, the limiting rod 111 is located in the transverse groove 171 above the vertical groove 173, and a chamfer is provided at the corner of the vertical groove 173 and the transverse groove 171. When it is necessary to carry the inner shrink bottle, by rotating the pump head 110, the pump head 110 drives the limiting rod 111 to rotate into the transverse groove 171, so that the limiting rod 111 moves into the limiting groove 172, thereby limiting the limiting rod 111 and preventing the pump head 110 from being accidentally pressed downward.

[0034] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shrink-fit bottle, characterized in that: include: Bottle body (200), the bottle body (200) is a cavity with an opening at the top, the bottle body (200) includes a PET support layer (210) and a composite shrink layer provided on the inner wall of the PET support layer (210), and the bottom of the PET support layer (210) is provided with a vent hole (240) for air to enter; A one-way press pump head assembly (100) is assembled on the top of the bottle body (200). The one-way press pump head assembly (100) includes a pump seat (170) threadedly connected to the top of the bottle body (200). A piston extraction part for extracting liquid from the inside of the bottle body (200) is installed inside the pump seat (170). A pump head (110) for driving the piston extraction part is slidably arranged on the top of the pump seat (170). Under the action of the pump head (110) and the piston extraction part, the bottle body (200) is subjected to atmospheric pressure, which will separate the composite shrinkage layer, so that the contents of the bottle are gradually squeezed out and used up. An interlocking assembly is placed inside the pump seat (170). The interlocking assembly includes a limiting rod (111) that is detachably installed at the bottom of the pump head (110). The pump seat (170) is provided with a limiting part that interlocks with the limiting rod (111) to prevent the pump head (110) from being accidentally pressed.

2. The shrink-fit bottle according to claim 1, characterized in that: The composite shrinkable layer consists of an EVOH barrier layer (220) and a PET packaging layer (230), with the EVOH barrier layer (220) located on the side close to the PET support layer (210).

3. The shrink-fit bottle according to claim 2, characterized in that: The piston extraction part includes a pump barrel (190), the pump barrel (190) is fixedly connected inside the pump seat (170), a liquid inlet check valve (180) is installed inside the pump barrel (190), and a pump tube seat (140) is installed on the top of the pump barrel (190).

4. A shrink-fit bottle according to claim 3, characterized in that: A pump tube (120) is slidably installed inside the pump tube seat (140). A spring (130) for driving the pump tube (120) to reset is sleeved on the outside of the pump tube (120). The pump head (110) is inserted into the pump tube (120). The pump head (110) has a discharge channel communicating with the pump tube (120) inside.

5. A shrink-fit bottle according to claim 4, characterized in that: A piston (150) is installed inside the pump barrel (190) and below the pump tube seat (140), and a liquid discharge check valve (160) is slidably installed inside the piston (150).

6. The shrink-fit bottle according to claim 1, characterized in that: The limiting rod (111) has an arc-shaped structure and the center of the arc is located below the limiting rod (111).

7. A shrink-fit bottle according to claim 6, characterized in that: The limiting part includes a vertical groove (173) vertically opened on the outside of the pump seat (170), a horizontal groove (171) is opened at the top of the vertical groove (173), and a limiting groove (172) is opened at the bottom of the inner wall of the horizontal groove (171) for locking the positioning limiting rod (111).

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