Negative pressure double-shell bottle device

Abstract

The negative pressure double-shell bottle device comprises a hard shell, a soft shell, a threaded opening, an air cavity, a negative pressure cavity, a cutting line and an air inlet, and the hard shell is provided with a hard shell threaded opening, a hard shell wall and a hard shell fusion line; the soft shell is provided with a soft shell threaded opening and a soft shell fusion line; the hard shell and the soft shell are fixedly connected through fusion and are cut along a cutting line to form the double-shell bottle; the hard shell threaded opening and the soft shell threaded opening are combined into a threaded opening through hot melting and fixed connection; the hard shell fusion line and the soft shell fusion line are fixedly connected through hot fusion to form a cutting line; cutting along a cutting line to form an air inlet; the hard shell and the soft shell are fixedly connected through fusion to form an air cavity and a negative pressure cavity. Through the outer hard shell, the effects of no deformation and convenience in use are achieved; a negative pressure cavity is formed through deformation of the inner-layer soft shell, so that the liquid product is isolated from air, and is prevented from being oxidized and polluted by microorganisms. In addition, the air inlet is formed through cutting along the cutting line, and the defect that the soft shell is punched through through secondary punching is avoided.

Description

Technical Field

[0001] The invention relates to a negative pressure double-shell bottle device. Background Art

[0002] Chinese patent CN112849725A disclosed a low-cost double-layer bottle on May 28, 2021, comprising a double-layer bottle body and a one-way diaphragm, wherein the one-way diaphragm is provided with a one-way discharge port; the double-layer bottle body comprises a soft inner bottle body and an outer bottle body which can be squeezed and can return to its original shape after the squeezing is released, a gap cavity is formed between the inner bottle body and the outer bottle body, and a gap opening is formed at the side of the inner bottle body and the bottle mouth of the outer bottle body; a soft bottle cap is wrapped at the bottle mouth of the inner bottle body, and the bottle cap comprises a top surface covering the bottle mouth of the inner bottle body and a side wall wrapping the bottle mouth, an opening corresponding to the one-way discharge port and an air inlet are provided on the top surface, the air inlet is for outside air to enter the gap cavity from the air inlet, and a one-way sealing valve is formed with the side wall of the bottle cap; the one-way sealing valve is in a sealed state when the outer bottle body is squeezed, and allows air to enter the gap cavity from the air inlet in one direction after the squeezing of the outer bottle body is released.

[0003] As people's quality of life improves, they have higher and higher requirements for the preservation of food, cosmetics, medical supplies, etc. Liquid products may be oxidized when in contact with air, and the effective ingredients may decrease, or even produce harmful substances; they may also be contaminated by harmful microorganisms. In order to prevent corruption and deterioration, a large amount of preservatives are added to the products to extend the shelf life, which seriously affects the product quality.

[0004] Packaging that isolates liquid products from air during use can effectively avoid product oxidation and microbial contamination.

[0005] Traditional soft bag packaging can isolate liquid products from contact with air, but soft bag packaging cannot be placed upright, which brings inconvenience to production, transportation and use. Soft bag packaging deformation has a negative impact on the product image and affects sales. Packaging that can be placed upright, is easy to use without deformation, and can isolate air is particularly important for liquid products. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, according to an embodiment of the present invention, it is hoped to provide a double-shell packaging bottle, aiming to achieve the following invention purposes: (1) the purpose of preventing deformation and being easy to use is achieved by using an outer hard shell; (2) when used in conjunction with an upright vacuum liquid dispensing pump (or an inverted vacuum liquid dispensing pump), a negative pressure chamber is formed by deforming the inner soft shell to isolate air from entering, thereby preventing the product from being oxidized and contaminated by microorganisms; (3) a method is provided in which the bottom of the outer hard shell and the inner soft shell are fused together, and an air inlet is formed by cutting along a cutting line, thereby avoiding the disadvantage that the soft shell is easily pierced by secondary punching, and effectively improving the production efficiency and qualified rate of double-shell bottles.

[0007] According to an embodiment, a negative pressure double-shell bottle device provided by the present invention comprises a hard shell, a soft shell, a threaded opening, an air cavity, a negative pressure cavity, a cutting line and an air inlet, wherein the innovation lies in that the hard shell is provided with a hard shell threaded opening, a hard shell wall and a hard shell fusion line; the soft shell is provided with a soft shell threaded opening and a soft shell fusion line; the hard shell and the soft shell are connected by fusion and fixed connection and cut along the cutting line to form a double-shell bottle; the hard shell threaded opening and the soft shell threaded opening are combined into a threaded opening by hot melting and fixed connection; the hard shell fusion line and the soft shell fusion line are connected by hot melting and fixed connection to form a cutting line; cutting along the cutting line forms an air inlet; the hard shell and the soft shell are connected by fusion and fixed connection to form an air cavity and a negative pressure cavity.

[0008] The negative pressure double-shell bottle device of the present invention is further equipped with an upright vacuum pump or an inverted vacuum pump, the liquid product tank is loaded into the negative pressure cavity, the upright vacuum pump or the inverted vacuum pump is screwed on the cap and sealed, and the air is isolated for storage.

[0009] Preferably, in the aforementioned negative pressure double-shell bottle device of the present invention, the soft shell comprises an outer layer and an inner layer, the outer layer is an isolation membrane, and the inner layer is a single-layer or multi-layer composite anti-seepage membrane.

[0010] By means of the technical solution of the present invention, the upright vacuum pump or the inverted vacuum pump is pressed, air enters the air cavity through the air inlet, the atmospheric pressure acts on the outer wall of the soft shell, the soft shell is deformed, the liquid is squeezed, and the upright vacuum pump or the inverted vacuum pump discharges the liquid; the negative pressure cavity maintains negative pressure, and no air enters; the hard shell wall does not deform and maintains its original shape.

[0011] Compared with the prior art, the negative pressure double-shell bottle device of the present invention achieves the invention effect of not deforming and being convenient to use by the outer hard shell; and forms a negative pressure cavity by deforming the inner soft shell, so as to isolate the liquid product from the air and prevent oxidation and microbial contamination. In addition, the present invention also provides a method of cutting along the cutting line to form an air inlet, avoiding the disadvantage of punching through the soft shell twice, and improving the production efficiency and qualified rate of double-shell bottles. In addition, the present invention also provides a double-layer composite film soft shell with an outer layer of an isolation film and an inner layer of a single-layer or multi-layer composite anti-seepage film. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a perspective view of the negative pressure double-shell bottle device of the present invention.

[0013] Figure 2 It is a schematic structural diagram of the negative pressure double-shell bottle device of the present invention.

[0014] Figure 3 It is a schematic diagram of the structure of the vacuum pump of the negative pressure double-shell bottle device of the present invention.

[0015] Figure 4 Schematic diagram of the structure of the double-shell bottle of the negative pressure double-shell bottle device of the present invention (front view),

[0016] Figure 5It is a schematic structural diagram of a double-shell bottle of the negative pressure double-shell bottle device of the present invention (viewed from above).

[0017] Figure 6 It is a schematic structural diagram of the hard shell of the negative pressure double-shell bottle device of the present invention.

[0018] Figure 7 It is a schematic structural diagram of the soft shell of the negative pressure double-shell bottle device of the present invention.

[0019] Among them: 1 is a double-shell bottle; 2-1 is an upright vacuum pump; 2-2 is an inverted vacuum pump; 1-1 is a hard shell; 1-2 is a soft shell; 1-3 is a threaded opening; 1-4 is an air cavity; 1-5 is a negative pressure cavity; 1-6 is a cutting line; 1-7 is an air inlet; 1-11 is a hard shell threaded opening; 1-12 is a hard shell wall; 1-13 is a hard shell fusion line; 1-21 is a soft shell threaded opening; 1-22 is a soft shell wall; 1-23 is a soft shell fusion line; 1-221 is an outer isolation membrane; 1-222 is an inner anti-seepage membrane. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. These embodiments should be understood to be only used to illustrate the present invention and not to limit the scope of protection of the present invention. After reading the contents of the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

[0021] The negative pressure double-shell bottle device in the following embodiments of the present invention is blown by a double-layer preform injection molding mold commonly used in the art. The double-layer preform injection molding mold consists of two sets of preform molds, which can be assembled and used simultaneously with the same two-color / dual-material injection machine, and the inner and outer layers of the material are injected into the double-layer preform within one injection cycle of the two-color / dual-material injection machine.

[0022] like Figure 1-2 As shown, the negative pressure double shell bottle device 1 provided in the preferred embodiment of the present invention is configured as follows Figure 3 The upright vacuum pump 2-1 (or inverted vacuum pump 2-2) shown in the figure comprises a hard shell 1-1, a soft shell 2-2, a threaded port 1-3, an air cavity 1-4, a negative pressure cavity 1-5, a cutting line 1-6, and an air inlet 1-7. Figure 6 As shown, the hard shell 1-1 is provided with a hard shell thread opening 1-11, a hard shell wall 1-12, and a hard shell fusion line 1-13. Figure 7 As shown, the soft shell 1-2 is provided with a soft shell thread opening 1-21, a soft shell wall 1-22, and a soft shell fusion line 1-23. Figure 4-5As shown, the hard shell 1-1 and the soft shell 1-2 are fused and fixedly connected and cut along the cutting line 1-6 to form a double-shell bottle 1; the hard shell threaded opening 1-11 and the soft shell threaded opening 1-21 are combined into a threaded opening 1-3 by hot melting and fixed connection; the hard shell fusion line 1-13 and the soft shell fusion line 1-23 are fixedly connected by hot melting to form a cutting line 1-6; cutting along the cutting line 1-6 forms an air inlet 1-7; the hard shell 1-1 and the soft shell 1-2 are fused and fixedly connected to form an air cavity 1-4 and a negative pressure cavity 1-5.

[0023] like Figure 7 As shown, the soft shell 2-2 includes an outer layer and an inner layer, the outer layer is an isolation membrane 1-221, and the inner layer is an impermeable membrane 1-222.

[0024] The implementation process of the present invention is described in detail below with reference to the accompanying drawings.

[0025] like Figure 1-7 As shown, the liquid product tank is loaded into the negative pressure chamber 1-5, and the upright vacuum pump 2-1 (or the inverted vacuum pump 2-2) is screwed on and sealed to isolate the air for storage. The upright vacuum pump 2-1 (or the inverted vacuum pump 2-2) is pressed, and air enters the air chamber 1-4 through the air inlet 1-7. The atmospheric pressure acts on the outer wall of the soft shell wall 1-22, and the soft shell wall 1-22 is deformed, the liquid is squeezed, and the upright vacuum pump 2-1 (or the inverted vacuum pump 2-2) discharges the liquid; the negative pressure chamber 1-5 maintains negative pressure, and no air enters; the hard shell wall 1-12 does not deform and maintains its original shape.

[0026] In summary, the present invention achieves the invention effect of no deformation and convenient use through the outer hard shell 1-1; the negative pressure chamber is formed by the deformation of the inner soft shell 2-2, so as to isolate the liquid product from the air and prevent oxidation and microbial contamination; in addition, the method of cutting along the cutting line to form the air inlet of the present invention avoids the disadvantage of punching through the soft shell for the second time, thereby improving the invention effect of improving the production efficiency and qualified rate of the double-shell bottle.

Claims

1. A negative pressure double shell bottle device, comprising a hard shell, a soft shell, a threaded opening, an air cavity, a negative pressure cavity, a cutting line and an air inlet, wherein: The hard shell is provided with a hard shell threaded opening, a hard shell wall and a hard shell fusion line; the soft shell is provided with a soft shell threaded opening and a soft shell fusion line; the hard shell and the soft shell are fixedly connected by fusion and cut along the cutting line to form a double-shell bottle; the hard shell threaded opening and the soft shell threaded opening are combined into a threaded opening by hot melting and fixed connection; the hard shell fusion line and the soft shell fusion line are fixedly connected by hot melting to form a cutting line; cutting along the cutting line forms an air inlet; the hard shell and the soft shell are fixedly connected by fusion to form an air cavity and a negative pressure cavity.

2. The negative pressure double-shell bottle device according to claim 1 is characterized in that: It further comprises an upright vacuum pump or an inverted vacuum pump, the liquid product tank is loaded into the negative pressure chamber, the upright vacuum pump or the inverted vacuum pump is sealed by screwing a cover, and the air is isolated for storage.

3. The negative pressure double shell bottle device according to claim 1 or 2, characterized in that: The soft shell comprises an outer layer and an inner layer, wherein the outer layer is an isolation membrane and the inner layer is a single-layer or multi-layer composite anti-seepage membrane.

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