CN118183004A - High barrier plastic bottle, beer bottle and method for producing the same - Google Patents

Abstract

The invention discloses a high-barrier plastic bottle, which eliminates a gap between the outer wall of the bottle cap and the outer wall of the bottle body through a sealing structure after the bottle cap is connected with the bottle body, so that a barrier layer I and a barrier layer II are in continuous contact on the outer wall of the plastic bottle, namely a barrier coating with strong barrier property is complete and continuous on the outer wall of the plastic bottle, thereby comprehensively blocking and covering the outer wall of the plastic bottle, maximally improving the barrier property of the plastic bottle, improving the external tightness of the plastic bottle, preventing the penetration of external bacteria, guaranteeing the drinking safety, and realizing the comprehensive barrier covering of the plastic bottle through the cooperation of a sealing part, a sealing convex ring and the sealing structure. In addition, the invention also discloses a beer bottle. In addition, the invention also discloses a manufacturing method of the high-barrier plastic bottle.

Description

High barrier plastic bottle, beer bottle and manufacturing method thereof

Technical Field

The present invention relates to the technical field of material packaging, and in particular, to a high barrier plastic bottle. In addition, the present invention also relates to a beer bottle having the high barrier plastic bottle. The present invention also relates to a method for manufacturing the high barrier plastic bottle.

Background technique

In the packaging industry, most materials are packaged in plastic bottles. Only a small number of materials with higher barrier requirements, such as alcoholic beverages and milk, are packaged in glass bottles. This is because plastic bottles are lighter, easier to carry, have lower production costs, and are less prone to damage than glass bottles. Glass bottles have higher barrier properties than plastic bottles, but their costs are also relatively high.

Therefore, in order to obtain a plastic packaging container with low cost, high barrier property and strong versatility, for example, Chinese utility model patent CN218345532U discloses a plastic ampoule vacuum coating module and an integrated molding machine, which improves the barrier property of the plastic ampoule by forming a barrier coating on the outer wall of the plastic ampoule. However, in the process of processing and manufacturing plastic bottles, if the bottle body and the bottle cap form a plastic bottle and then the plastic bottle is plated as a whole, since the outer wall of the bottle mouth of the bottle body covered by the bottle cap does not have a barrier coating, and there is a gap between the bottle body and the bottle cap, external gas will penetrate into the gap between the bottle body and the bottle cap and then penetrate into the gap between the bottle cap and the bottle mouth. When put into a plastic bottle, the barrier property is still relatively low. For example, Chinese utility model patent CN206297902U discloses a plastic bottle, the bottom of the bottle cap is connected to a breaking ring, the breaking ring is stuck on the outer peripheral surface of the bottle mouth, and the plastic bottle is prevented from opening abnormally by the breaking ring during use. However, there are gaps between the breaking ring and the bottle cap and the bottle body. In addition, if the bottle body and the bottle cap are plated separately, the bottle mouth of the bottle body is usually clamped by the clamping mechanism as a clamping point, and then it will be shielded by the clamping mechanism during the plating process and cannot be plated with a barrier coating. Therefore, after the bottle cap seals the bottle body, if there is a gap between the bottle cap and the bottle body, the above-mentioned problem will also occur.

Summary of the invention

The invention provides a high-barrier plastic bottle, a beer bottle and a manufacturing method thereof, so as to solve the technical problem of low barrier property of existing plastic bottles.

According to one aspect of the present invention, there is provided a high-barrier plastic bottle, comprising a bottle cap and a bottle body with a top opening, the bottle cap being connected to the bottle body and used for sealing the top opening of the bottle body, a barrier layer 1 being provided on the outer wall of the bottle cap, a barrier layer 2 being provided on the outer wall of the bottle body, and a sealing structure being provided between the bottle cap and the bottle body for making the barrier layer 1 and the barrier layer 2 contact and continuously on the outer wall of the plastic bottle, thereby providing comprehensive barrier coverage to the outer wall of the plastic bottle.

As a further improvement of the above technical solution:

Furthermore, the sealing structure comprises an abutment ring 1 arranged on the end of the bottle cap facing the bottle body and an abutment ring 2 protruding from the outer wall of the bottle body and used for abutting and sealing with the abutment ring 1.

Further, the abutment ring 1 is an elastomer for elastically abutting and sealing with the abutment ring 2; and/or the abutment ring 2 is an elastomer for elastically abutting and sealing with the abutment ring 1.

Furthermore, the end surface of the abutment ring 1 facing the abutment ring 2 is an inclined surface 1 arranged obliquely, and the end surface of the abutment ring 2 facing the abutment ring 1 is an inclined surface 2 arranged obliquely for surface-to-surface contact with the inclined surface 1.

Furthermore, an abutment protrusion is convexly provided on the end of the abutment ring 1 facing the abutment ring 2, and an abutment groove for plugging and matching with the abutment protrusion is concavely provided on the end of the abutment ring 2 facing the abutment ring 1.

Furthermore, the sealing structure includes a sealing cone surface 1 obliquely arranged on the end surface of the bottle cap facing the bottle body and a sealing cone surface 2 obliquely arranged on the outer wall of the bottle body for sealing with the sealing cone surface 1.

Furthermore, the sealing structure includes an insert outer ring arranged on the outer wall of the bottle body for enclosing with the outer wall of the bottle body to form a sealing cavity with an opening toward the bottle cap, and an insert inner ring arranged on the end of the bottle cap facing the bottle body for inserting into the sealing cavity to fit and seal with the insert outer ring surface.

Furthermore, the sealing structure comprises a sealing spherical surface which is curved and arranged on the end surface of the bottle cap facing the bottle body and is used to match the shape of the outer wall of the bottle body.

Furthermore, the plastic bottle also includes anti-theft labels respectively bonded to the outer wall of the bottle cap and the outer wall of the bottle body.

Furthermore, a first sealing ring and a second sealing ring are convexly provided on the inner top wall of the bottle cap, the first sealing ring and the second sealing ring are arranged at intervals, the inner wall of the first sealing ring and the outer wall of the bottle body are sealed together, and the outer wall of the second sealing ring and the inner wall of the bottle body are sealed together.

Furthermore, a sealing protrusion is convexly provided on the inner top wall of the bottle cap between the first sealing ring and the second sealing ring, and is used for elastically abutting and sealing with the top wall of the bottle body.

Furthermore, a sealing ring is convexly provided on the inner top wall of the bottle cap and elastically abuts against the top wall of the bottle body for sealing.

According to another aspect of the present invention, there is also provided a beer bottle having the above-mentioned high barrier plastic bottle.

According to another aspect of the present invention, a method for manufacturing a high-barrier plastic bottle is provided, which is used to manufacture the above-mentioned high-barrier plastic bottle, and specifically comprises the following steps: S1, respectively injection molding a bottle cap, a bottle body, and a sealing structure between the bottle cap and the bottle body by an injection molding process; S2, coating an outer wall of the bottle cap with a barrier layer 1, and after the bottle body is filled with materials, sealing the bottle body with the bottle cap to obtain a plastic bottle; S3, supporting the plastic bottle with the bottle cap as a supporting base point, and then coating the plastic bottle to form a barrier layer 2 on the outer wall of the bottle body.

The present invention has the following beneficial effects:

The high barrier plastic bottle of the present invention is filled with materials into the bottle body through the top opening of the bottle body. After the material filling is completed, the bottle cap is connected to the bottle body to seal the top opening of the bottle body through the bottle cap to complete the packaging of the materials. After the bottle cap is connected to the bottle body, the gap between the outer wall of the bottle cap and the outer wall of the bottle body is eliminated by the sealing structure, so that the barrier layer 1 and the barrier layer 2 are in contact and continuous on the outer wall of the plastic bottle, that is, the barrier coating with strong barrier properties is completely continuous on the outer wall of the plastic bottle, thereby comprehensively barrier covering the outer wall of the plastic bottle, achieving the maximum improvement of the barrier properties of the plastic bottle, improving the packaging quality of the plastic bottle, and also improving the external sealing of the plastic bottle, preventing the infiltration of external bacteria, and ensuring drinking safety. The scheme realizes comprehensive barrier covering of the plastic bottle through the cooperation of the sealing part, the sealing convex ring and the sealing structure. Compared with the prior art, the plastic bottle of the scheme has improved barrier properties while having lower cost, a wide range of application, strong practicality, and is suitable for wide promotion and application.

In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

FIG1 is a schematic structural diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention;

FIG2 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention;

FIG3 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention;

FIG4 is a schematic cross-sectional view of a high barrier plastic bottle according to a preferred embodiment of the present invention;

FIG5 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention;

FIG6 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention;

7 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention;

FIG8 is a schematic cross-sectional view of a high barrier plastic bottle according to a preferred embodiment of the present invention.

illustration:

100, bottle cap; 110, abutment ring 1; 120, barrier layer 1; 130, first sealing ring; 140, second sealing ring; 150, sealing ring; 160, internal thread structure; 170, sealing protrusion; 180, sealing cone surface 1; 190, sealing spherical surface; 200, bottle body; 210, abutment ring 2; 220, barrier layer 2; 230, external thread structure; 240, stabilizing groove; 250, plug-in outer ring.

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered below.

FIG1 is a schematic diagram of the structure of a high barrier plastic bottle according to a preferred embodiment of the present invention; FIG2 is a schematic diagram of a cross-section of a high barrier plastic bottle according to a preferred embodiment of the present invention; FIG3 is a schematic diagram of a cross-section of a high barrier plastic bottle according to a preferred embodiment of the present invention; FIG4 is a schematic diagram of a cross-section of a high barrier plastic bottle according to a preferred embodiment of the present invention; FIG5 is a schematic diagram of a cross-section of a high barrier plastic bottle according to a preferred embodiment of the present invention;

Figure 6 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention; Figure 7 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention; Figure 8 is a cross-sectional schematic diagram of a high barrier plastic bottle according to a preferred embodiment of the present invention.

As shown in Figures 1 to 3, the high barrier plastic bottle of this embodiment includes a bottle cap 100 and a bottle body 200 with a top opening. The bottle cap 100 is connected to the bottle body 200 and is used to seal the top opening of the bottle body 200. A barrier layer 120 is provided on the outer wall of the bottle cap 100, and a barrier layer 220 is provided on the outer wall of the bottle body 200. A sealing structure is provided between the bottle cap 100 and the bottle body 200 for making the barrier layer 120 and the barrier layer 220 contact and be continuous on the outer wall of the plastic bottle, thereby providing comprehensive barrier coverage to the outer wall of the plastic bottle. Specifically, in the high barrier plastic bottle of the present invention, the material is filled into the bottle body 200 through the top opening of the bottle body 200. After the material filling is completed, the bottle cap 100 is connected to the bottle body 200, so as to seal the top opening of the bottle body 200 through the bottle cap 100 to complete the packaging of the material. After the bottle cap 100 is connected to the bottle body 200, the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200 is eliminated by the sealing structure, so that the barrier layer 120 and the barrier layer 220 are in continuous contact on the outer wall of the plastic bottle, that is, the barrier coating with strong barrier properties is The outer wall of the plastic bottle is complete and continuous, so as to fully block and cover the outer wall of the plastic bottle, thereby maximizing the barrier property of the plastic bottle, improving the packaging quality of the plastic bottle, and also improving the external sealing of the plastic bottle, preventing the infiltration of external bacteria, and ensuring drinking safety. This solution realizes comprehensive barrier coverage of the plastic bottle through the cooperation of the sealing part, the sealing convex ring and the sealing structure. Compared with the prior art, the plastic bottle of this solution has improved barrier properties at a lower cost, a wide range of applications, strong practicality, and is suitable for widespread promotion and application. It should be understood that the barrier coating includes barrier layer 1 120 and barrier layer 2 220. It should be understood that the barrier layer is formed by external plating of a material with high barrier properties such as silicon dioxide. Optionally, the bottle cap 100 includes a top cover for sealing the top opening of the bottle body 200 and a side cover detachably connected to the bottle body 200, the top cover and the side cover are integrally injection molded, and the abutment ring 1 110 is arranged on the end of the side cover facing the bottle body 200, so that when the abutment ring 2 210 and the abutment ring 1 110 abut, the outer wall of the abutment ring 1 110 and the outer wall of the abutment ring 2 210 are in contact and continuous, thereby making the barrier coating completely continuous on the outer wall of the plastic bottle. Optionally, the bottle cap 100 includes a top cover for sealing the top opening of the bottle body 200 and a side cover detachably connected to the bottle body 200, and the top cover and the side cover are integrally injection molded. Optionally, an internal thread structure 160 is arranged on the inner wall of the side cover, and an external thread structure 230 is arranged on the outer wall of the bottle body 200, and the internal thread structure 160 and the external thread structure 230 are threadedly connected to ensure reliable connection. Optionally, in another embodiment, the side cover and the bottle body 200 are connected by clamping. It should be understood that the high barrier plastic bottle of this embodiment can be applied to the packaging of materials with high barrier requirements such as beer and milk due to its improved barrier properties. It should be understood that if the bottle cap 100 is a cover structure with a rubber plug, it can also be used as a vial for the packaging of vaccines, powder injections, biological preparations, freeze-dried drugs and the like. Optionally, the plastic bottle is a vial, and the bottle cap 100 includes a accommodating cavity, a rubber plug arranged in the accommodating cavity, and a sealing structure for sealing the rubber plug, and vaccines, powder injections, biological preparations, freeze-dried drugs and the like are packaged by the plastic bottle. It should be understood that the sealing structure may be arranged only on the bottle cap 100 and then further contact and seal with the bottle body 200, or may be arranged only on the bottle body 200 to contact and seal with the bottle cap 100, or may be arranged in the gap between the bottle cap 100 and the bottle body 200 to contact with the bottle body 200 and the bottle cap 100 respectively through the sealing structure, thereby indirectly achieving the sealing between the bottle body 200 and the bottle cap 100.

As shown in Fig. 1 to Fig. 3, in this embodiment, the sealing structure includes an abutting ring 110 disposed on the end of the bottle cap 100 facing the bottle body 200 and an abutting ring 210 protruding on the outer wall of the bottle body 200 for abutting and sealing with the abutting ring 110. Specifically, after the bottle cap 100 and the bottle body 200 are connected, the abutting ring 110 is synchronously abutted and sealed with the abutting ring 210, so as to eliminate the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200 to the greatest extent through the abutting pressure, so that the barrier layer 120 and the barrier layer 220 are in continuous contact on the outer wall of the plastic bottle, thereby fully blocking and covering the outer wall of the plastic bottle. Optionally, the abutment ring 110 is arranged on the end of the side cover facing the bottle body 200, so that when the abutment ring 210 and the abutment ring 110 abut, the outer wall of the abutment ring 110 and the outer wall of the abutment ring 210 are in contact and continuous, thereby making the barrier coating completely continuous on the outer wall of the plastic bottle. It should be understood that the stronger the sealing performance between the abutment ring 110 and the abutment ring 210, the more structural support can be provided for the comprehensive barrier coverage of the plastic bottle by the barrier layer 120 and the barrier layer 220. It should be understood that the abutting end faces between the abutment ring 110 and the abutment ring 210 match to ensure good sealing performance after abutment. It should be understood that, as shown in Figure 1, after the abutment ring 110 and the abutment ring 210 are abutted and sealed, the portion of the outer wall of the bottle body 200 that is in contact with the external gas is evenly provided with the barrier layer 220, and the portion of the outer wall of the bottle body 200 that is not in contact with the external gas is shielded by the bottle cap 100, and under the action of the abutment ring 110 and the abutment ring 210, there is no gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, and then under the action of the barrier layer 120 and the barrier layer 220, the plastic bottle can be fully blocked and covered, that is, the abutment ring 110, the abutment ring 210, the barrier layer 120 and the barrier layer 220 cooperate to achieve full blocking coverage of the plastic bottle. Optionally, in this embodiment, the abutment ring 110 and the bottle cap 100 are integrally formed by injection molding. In another embodiment, the abutment ring 110 and the bottle cap 100 are split structures, and the abutment ring 110 is fixed to the abutment ring 210 under the pressure of the bottle cap 100.

As shown in Figures 1-3, in this embodiment, the abutment ring 110 is an elastomer for elastically abutting and sealing with the abutment ring 210. It should be understood that the elastomer is made of elastic materials such as rubber. Specifically, the elastic abutment and sealing of the elastomer and the abutment ring 210 improve the external sealing of the plastic bottle, prevent the external gas from penetrating from the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, and provide structural support for the comprehensive barrier coverage of the plastic bottle. Optionally, the abutment ring 110 and the bottle cap 100 are integrally formed by a double-material injection molding process to ensure a reliable structure. Optionally, in another embodiment, the abutment ring 110 and the bottle cap 100 are split structures, and the abutment ring 110 elastically abuts and seals with the abutment ring 2 210 under the pressure of the bottle cap 100. As shown in Figures 1-3, in this embodiment, the abutment ring 210 is an elastomer for elastically abutting and sealing with the abutment ring 110. Specifically, the outer sealing property of the plastic bottle is improved by elastically abutting and sealing the abutting ring 110 with the elastomer, and preventing the external gas from penetrating from the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200. Optionally, the abutting ring 110 and the sealing protrusion 170 are both elastomers, so as to maximize the outer sealing property of the plastic bottle, prevent the external gas from penetrating from the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, and provide structural support for the comprehensive barrier coverage of the plastic bottle. It should be understood that when the abutting ring 110 and the abutting ring 2 210 are elastically abutted, under the action of elastic deformation, the uneven end surface caused by the lack of processing accuracy during the injection molding process of the abutting ring 110 and the abutting ring 2 210 can be compensated, thereby reducing the process difficulty and facilitating processing and manufacturing. As shown in Fig. 4, in this embodiment, the end surface of the abutting ring 1 110 facing the abutting ring 2 210 is an inclined surface 1 arranged obliquely, and the end surface of the abutting ring 2 210 facing the abutting ring 1 10 is an inclined surface 2 arranged obliquely for surface-to-surface contact with the inclined surface 1. Specifically, the sealing area between the abutting ring 1 10 and the abutting ring 2 210 is increased by surface-to-surface contact between the inclined surface 1 and the inclined surface 2, and the infiltration of gas into the inclined surface is more difficult than that of the horizontal surface, thereby improving the sealing performance between the abutting ring 1 10 and the abutting ring 2 210, so as to provide structural support for the comprehensive barrier coverage of the plastic bottle.

As shown in Fig. 5, in this embodiment, the end of the abutting ring 1 110 facing the abutting ring 2 210 is provided with an abutting protrusion, and the end of the abutting ring 2 210 facing the abutting ring 1 110 is provided with an abutting groove for plugging and matching with the abutting protrusion. Specifically, the plugging and matching of the abutting protrusion and the abutting groove between the abutting ring 1 110 and the abutting ring 2 210 increases the sealing area, and the gas penetration is more difficult on the curved surface than on the horizontal surface, thereby improving the sealing between the abutting ring 1 110 and the abutting ring 2 210, so as to provide structural support for the comprehensive barrier coverage of the plastic bottle.

As shown in FIG. 7 , in this embodiment, the sealing structure includes a sealing cone 180 obliquely arranged on the end face of the bottle cap 100 facing the bottle body 200 and a sealing cone 2 obliquely arranged on the outer wall of the bottle body 200 for face-to-face sealing with the sealing cone 180. Specifically, after the bottle cap 100 and the bottle body 200 are connected, the sealing cone 180 and the sealing cone 2 are synchronously conically sealed to eliminate the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, and the cone surface is relative to the horizontal plane, which greatly increases the difficulty of gas penetration, thereby improving the sealing between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, so as to provide structural support for the comprehensive barrier coverage of the plastic bottle. It should be understood that when the upper end face of the bottle body 200 is arranged in a conical shape, the sealing cone 2 is a part of the bottle shoulder on the bottle body 200, so that no additional processing is required, thereby simplifying the enlargement process of the bottle body 200 and facilitating manufacturing.

As shown in FIG8 , in this embodiment, the sealing structure includes an insert outer ring 250 arranged on the outer wall of the bottle body 200 for enclosing with the outer wall of the bottle body 200 to form a sealed cavity with an opening toward the bottle cap 100, and an insert inner ring arranged on the end of the bottle cap 100 facing the bottle body 200 for inserting into the sealed cavity to fit and seal with the insert outer ring 250 face to face. Specifically, the sealed cavity is formed by the insert outer ring 250, so that after the insert inner ring is inserted into the sealed cavity, the insert outer ring 250 and the insert inner ring are fit and sealed face to face to eliminate the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, thereby improving the sealing between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, so as to provide structural support for the comprehensive barrier coverage of the plastic bottle. Optionally, the insert outer ring 250 and/or the insert inner ring are elastomers to achieve elastic fit sealing. Preferably, the bottom of the sealing cavity is sealed against the end face of the plug-in inner ring, that is, while achieving a face-to-face seal, a face-to-face seal is also achieved, so as to further improve the sealing between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, and ensure reliable sealing. It should be understood that since the plug-in cavity formed by the plug-in outer ring 250 is plugged in with the plug-in inner ring, the plug-in inner ring is limited in the radial direction by the plug-in outer ring 250, thereby further improving the reliability of the bottle cap 100 and the bottle body 200 after assembly.

As shown in FIG. 6 , in this embodiment, the sealing structure includes a sealing spherical surface 190 that is curved and arranged on the end surface of the bottle cap 100 facing the bottle body 200 and is used to match the outer wall shape of the bottle body 200. Specifically, after the bottle cap 100 and the bottle body 200 are connected, the sealing spherical surface 190 is synchronously fitted and sealed with the outer wall spherical surface of the bottle body 200, thereby eliminating the gap between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200 without changing the structure of the bottle body 200, thereby improving the seal between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, so as to provide structural support for the comprehensive barrier coverage of the plastic bottle. It should be understood that the bottle shoulders on the bottle body 200 of the plastic bottle are usually arranged in a spherical surface, so the sealing spherical surface 190 can be directly fitted and sealed with the bottle shoulders of the bottle body 200, which is simple and convenient to assemble and has strong practicality.

In this embodiment, the plastic bottle further includes anti-theft labels respectively bonded to the outer wall of the bottle cap 100 and the outer wall of the bottle body 200. Specifically, the anti-theft label identifies the use status of the plastic bottle and prevents the plastic bottle from being opened abnormally. It should be understood that if the plastic bottle of this solution is sealed with an anti-theft ring, a gap will be formed between the outer wall of the bottle cap 100 and the outer wall of the bottle body 200, and comprehensive barrier coverage cannot be achieved.

As shown in Fig. 1 to Fig. 3, in this embodiment, a stabilizing groove 240 is formed on the bottom of the bottle body 200. Specifically, the stabilizing groove 240 is formed on the bottom of the bottle body 200 so that the radial cross section of the bottom of the bottle body 200 is arranged in a triangular shape, thereby improving the stability of the plastic bottle after being placed vertically.

As shown in FIG. 2 , in this embodiment, a first sealing ring 130 and a second sealing ring 140 are convexly provided on the inner top wall of the bottle cap 100, and the first sealing ring 130 and the second sealing ring 140 are arranged at intervals, and the inner wall of the first sealing ring 130 and the outer wall of the bottle body 200 are fitted and sealed, and the outer wall of the second sealing ring 140 and the inner wall of the bottle body 200 are fitted and sealed. Specifically, the first sealing ring 130, the second sealing ring 140 and the inner top wall of the bottle cap 100 are enclosed to form an insertion cavity to be plugged and matched with the top of the bottle body 200, and the inner wall of the first sealing ring 130 and the outer wall of the bottle body 200 are fitted and sealed, and the outer wall of the second sealing ring 140 and the inner wall of the bottle body 200 are fitted and sealed, so as to improve the internal sealing between the bottle body 200 and the bottle cap 100.

As shown in Fig. 2, in this embodiment, a sealing protrusion 170 is convexly provided on the inner top wall of the bottle cap 100 between the first sealing ring 130 and the second sealing ring 140 for elastically contacting and sealing with the top wall of the bottle body 200. Specifically, the sealing protrusion 170 is in close contact with the top wall of the bottle body 200 to achieve three-sided sealing at the same time, further improving the inner sealing between the bottle body 200 and the bottle cap 100.

As shown in Fig. 2, in this embodiment, the corner between the end of the second sealing ring 140 facing the bottle body 200 and the inner wall of the second sealing ring 140 is chamfered. Specifically, the chamfer guides the bottle body 200 to be inserted into the insertion cavity to reduce the difficulty of assembly.

As shown in FIG3 , in the present embodiment, a sealing ring 150 is convexly provided on the inner top wall of the bottle cap 100 and elastically abuts and seals with the top wall of the bottle body 200. Specifically, after the bottle cap 100 is connected to the bottle body 200, the sealing ring 150 and the top wall of the bottle body 200 are elastically abutted and sealed to improve the inner sealing between the bottle body 200 and the bottle cap 100. Optionally, the sealing ring 150 is made of elastic materials such as rubber. Optionally, the radial length of the sealing ring 150 is greater than the radial length of the top wall of the bottle body 200. After the sealing ring 150 and the top wall of the bottle body 200 are elastically abutted, the sealing ring 150 is elastically deformed, and because the radial length of the sealing ring 150 is greater than the radial length of the top wall of the bottle body 200, the semi-wrapped sealing of the top wall of the bottle body 200 is realized, and the inner sealing between the bottle body 200 and the bottle cap 100 is further improved.

The beer bottle of this embodiment has the above-mentioned high barrier plastic bottle. Specifically, by adopting the above-mentioned high barrier plastic bottle to package beer, compared with the existing glass beer packaging, the beer bottle of this embodiment has low manufacturing cost, is not easy to be damaged, is easy to transport, has good barrier properties, and ensures storage quality.

The manufacturing method of the high barrier plastic bottle of this embodiment is used to manufacture the above-mentioned high barrier plastic bottle, and specifically includes the following steps: S1, using an injection molding process to respectively injection mold a bottle cap 100, a bottle body 200, and a sealing structure between the bottle cap 100 and the bottle body 200; S2, coating the outer wall of the bottle cap 100 with a barrier layer 120, and after the bottle body 200 is filled with materials, the bottle cap 100 seals the bottle body 200 to obtain a plastic bottle; S3, using the bottle cap 100 as a supporting base point to support the plastic bottle, and then coating the plastic bottle to form a barrier layer 220 on the outer wall of the bottle body 200. It should be understood that in this solution, since the barrier layer 120 is firstly coated on the outer wall of the bottle cap 100, and then after the bottle body 200 is sealed, the plastic bottle is coated as a whole to form a barrier layer 220 on the outer wall of the bottle body 200, that is, the barrier coating layer is fully coated on the plastic bottle once, that is, the barrier coating layer is fully coated on the plastic bottle. It should be understood that if the barrier layer 120 is not plated before the bottle cap 100 seals the bottle body 200, and the outer coating is performed after the bottle body 200 and the bottle cap 100 are sealed, then no matter whether the bottle cap 100 or the bottle body 200 is used as the supporting base point to support the plastic bottle, it is necessary to first plate the entire body for the first time, then flip the plastic bottle, and then plate the entire body for the second time. While the coating area is greatly increased, the process flow is complicated and the manufacturing efficiency is low. It should be understood that if the bottle body 200 is plated separately without the entire body being plated, that is, after the bottle body 200 is injection-blow molded, the bottle body 200 is first plated, and then filled and sealed, it is necessary to add an additional sterilization process for sterilization after the outer coating of the bottle body 200 is completed to ensure the quality of filling and sealing. The plastic bottle of this solution can use an integrated mechanical equipment for injection-blow filling-sealing-plating to achieve one-time molding of aseptic vacuum packaging, which has a simple process flow and high manufacturing efficiency. It should be understood that the sterilization process has relevant standards for the sterilization time, sterilization temperature and sterilization process, which will greatly increase the time of the entire manufacturing cycle and increase the complexity, thereby resulting in low efficiency in the manufacture of plastic bottles.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (14)

1. The utility model provides a high barrier plastic bottle, a serial communication port, including bottle lid (100) and have open-top bottle (200), bottle lid (100) are connected and are used for sealing the open-top of bottle (200) with bottle (200), be equipped with barrier layer one (120) on the outer wall of bottle lid (100), be equipped with barrier layer two (220) on the outer wall of bottle (200), be equipped with between bottle lid (100) and bottle (200) and be used for making barrier layer one (120) and barrier layer two (220) contact in succession on the outer wall of plastic bottle, and then carry out comprehensive barrier coverage's seal structure to the outer wall of plastic bottle.

2. The high barrier plastic bottle of claim 1, wherein the sealing structure comprises a first abutting ring (110) arranged on the end of the bottle cap (100) facing the bottle body (200) and a second abutting ring (210) protruding on the outer wall of the bottle body (200) for abutting and sealing with the first abutting ring (110).

3. The high barrier plastic bottle of claim 2, wherein the first abutment ring (110) is elastomeric for resilient abutment sealing with the second abutment ring (210); and/or

The second abutting ring (210) is an elastomer and is used for elastically abutting and sealing with the first abutting ring (110).

4. The high barrier plastic bottle according to claim 2, wherein the end face of the first abutting ring (110) facing the second abutting ring (210) is an inclined face one arranged obliquely, and the end face of the second abutting ring (210) facing the first abutting ring (110) is an inclined face two arranged obliquely for being attached to one surface of the inclined face.

5. The high barrier plastic bottle according to claim 2, wherein the first abutting ring (110) is provided with an abutting protrusion protruding toward the end of the second abutting ring (210), and the second abutting ring (210) is provided with an abutting groove concavely protruding toward the end of the first abutting ring (110) for mating with the abutting protrusion in an inserting manner.

6. The high barrier plastic bottle according to claim 1, wherein the sealing structure comprises a first sealing conical surface (180) obliquely arranged on the end surface of the bottle cap (100) facing the bottle body (200) and a second sealing conical surface obliquely arranged on the outer wall of the bottle body (200) and used for being in surface fit and sealing with the first sealing conical surface (180).

7. The high barrier plastic bottle according to claim 1, wherein the sealing structure comprises an inserting outer ring (250) which is arranged on the outer wall of the bottle body (200) in a surrounding manner and is used for forming a sealing cavity which is arranged towards the bottle cap (100) through an opening, and an inserting inner ring which is arranged on the end part of the bottle cap (100) towards the bottle body (200) and is used for being inserted into the sealing cavity to be in fit sealing with the surface of the inserting outer ring (250).

8. The high barrier plastic bottle according to claim 1, wherein the sealing structure comprises a sealing sphere (190) curved on the end surface of the bottle cap (100) facing the bottle body (200) for matching the shape of the outer wall of the bottle body (200).

9. The high barrier plastic bottle of any one of claims 1-8, further comprising an anti-theft label bonded to the outer wall of the cap (100) and the outer wall of the body (200), respectively.

10. The high barrier plastic bottle according to any one of claims 1 to 8, wherein the inner top wall of the bottle cap (100) is provided with a first sealing ring (130) and a second sealing ring (140) in a protruding manner, the first sealing ring (130) and the second sealing ring (140) are arranged at intervals, the inner wall of the first sealing ring (130) is in fit and seal with the outer wall of the bottle body (200), and the outer wall of the second sealing ring (140) is in fit and seal with the inner wall of the bottle body (200).

11. The high barrier plastic bottle according to claim 10, wherein the inner top wall of the bottle cap (100) between the first sealing ring (130) and the second sealing ring (140) is provided with a sealing protrusion (170) for elastically abutting and sealing against the top wall of the bottle body (200) in a protruding manner.

12. The high barrier plastic bottle according to any one of claims 1 to 8, wherein the inner top wall of the bottle cap (100) is provided with a sealing ring (150) protruding upward to seal against the top wall of the bottle body (200) in an elastic abutment.

13. A beer bottle characterized by having a high barrier plastic bottle according to any one of claims 1-12.

14. A method for manufacturing a high barrier plastic bottle according to any one of claims 1 to 12, comprising the steps of:

S1, respectively injection molding a bottle cap (100), a bottle body (200) and a sealing structure between the bottle cap (100) and the bottle body (200) by adopting an injection molding process;

S2, plating a first barrier layer (120) on the outer wall of the bottle cap (100), and sealing the bottle body (200) by the bottle cap (100) after the bottle body (200) is filled with materials to obtain a plastic bottle;

S3, supporting the plastic bottle by taking the bottle cap (100) as a supporting base point, and plating the plastic bottle to form a second barrier layer (220) on the outer wall of the bottle body (200).