Plastic can body suitable for aluminum foil cover tearing and sealing and plastic can

Abstract

The plastic can body comprises a can body and a can opening structure which are integrally formed, the can opening structure comprises a first can neck, a supporting ring, a second can neck and a turned-over edge which are sequentially arranged from bottom to top, the outer diameter of the supporting ring is larger than that of the first can neck and that of the second can neck, and the outer diameter of the supporting ring is larger than that of the first can neck and that of the second can neck. A gap is formed between the supporting ring and the turned-over edge, the turned-over edge has a first preset state and a second preset state, and when the turned-over edge is in the first preset state, the turned-over edge and the supporting ring are arranged in parallel. The first can neck, the supporting ring, the second can neck and the turnup which are sequentially arranged from bottom to top are arranged in the can opening structure, the outer diameter of the supporting ring is larger than that of the two can necks, and two preset states of the turnup are matched, namely the first state parallel to the supporting ring and the second state in which the turnup is bent to form the containing space, so that reliable matching of the plastic can and the aluminum foil tearing cover is achieved; the technical problem that an aluminum foil tearing cover cannot be adopted for a traditional plastic can is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of packing jar, especially to a plastic jar body suitable for aluminum foil tear-off cover sealing and plastic jar. BACKGROUND

[0002] In the field of packaging containers, the common plastic jars on the market mainly adopt two sealing methods: composite film sealing or screw cap sealing. As a convenient sealing method, the aluminum foil tear-off cover is mainly limited to metal containers such as aluminum cans and tin cans.

[0003] As for plastic jars, there is currently a lack of mature product solutions that match the aluminum foil tear-off cover. This is mainly due to the fact that the traditional plastic jar mouth structure design cannot meet the sealing requirements of the aluminum foil tear-off cover, resulting in a relatively single sealing method that is difficult to meet the market demand for diversified packaging forms. Therefore, there is an urgent need to design a plastic jar body suitable for aluminum foil tear-off cover sealing. SUMMARY

[0004] The main purpose of the utility model is to provide a plastic jar body suitable for aluminum foil tear-off cover sealing and a plastic jar to solve the above technical problems.

[0005] The purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] A plastic jar body suitable for aluminum foil tear-off cover sealing, comprising: an integrally formed jar body and a jar mouth structure, the jar mouth structure comprising a first jar neck, a support ring, a second jar neck and a flange arranged in order from bottom to top, the outer diameter of the support ring being greater than the outer diameter of the first jar neck and the second jar neck, respectively, the support ring and the flange having a gap therebetween, the flange having a first preset state and a second preset state, wherein, when the flange is in the first preset state, the flange is arranged parallel to the support ring, and when the flange is in the second preset state, the flange is bent in the gap and forms a containing space with the second jar neck for containing the edge of the aluminum foil tear-off cover.

[0007] The width of the flange is 2.7-3.5mm, and the thickness is 0.3-0.5mm.

[0008] The height of the second jar neck is 6-8mm.

[0009] The width of the support ring is 3.5-4mm, and the thickness is 1.8-2.5mm.

[0010] The height of the first jar neck is 4.5-11mm.

[0011] The wall thickness of the can body is greater than or equal to 0.5 mm, and the thickness of the bottom center of the can body is greater than or equal to 1.55 mm.

[0012] The can body is cylindrical, prismatic, conical or flat-cylindrical.

[0013] A plastic can comprises an aluminum foil tear-off cover and a plastic can body suitable for aluminum foil tear-off cover sealing as described above, the aluminum foil tear-off cover comprises a cover part and a packaging part arranged on the outer periphery of the cover part, the cover part covers the top of the can opening structure, and the packaging part wraps the outside of the flange and is bent to extend into the accommodation space formed between the flange and the second can neck.

[0014] The packaging part comprises a lap joint part, a side wall part and an inner folding part connected in sequence, the lap joint part is attached to the top surface of the second can neck, the side wall part is attached to the outer surface of the flange, and the inner folding part is inserted into the accommodation space.

[0015] The beneficial technical effects of the utility model are as follows: the first can neck, the support ring, the second can neck and the flange are arranged in the can opening structure from bottom to top in sequence, the outer diameter of the support ring is greater than the two can necks, and the two preset states of the flange are cooperated, i.e., the first state of being parallel to the support ring and the second state of being bent to form the accommodation space, the reliable cooperation between the plastic can and the aluminum foil tear-off cover is realized, and the technical problem that the traditional plastic can cannot adopt the aluminum foil tear-off cover is solved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0017] Figure 1 The cross-sectional view of the can body and the can opening structure in the plastic can body suitable for aluminum foil tear-off cover sealing is provided for the embodiments of the utility model.

[0018] Figure 2 The top view of the can body in the plastic can body suitable for aluminum foil tear-off cover sealing is provided for the embodiments of the utility model.

[0019] Figure 3 The schematic view of the cooperation between the flange in the plastic can and the aluminum foil tear-off cover is provided for the embodiments of the utility model.

[0020] EXPLANATION OF REFERENCE NUMERALS:

[0021] In the diagram: 1-flanged edge, 2-second neck, 3-support ring, 4-first neck, 5-can body, 6-aluminum foil cap, 61-covering part, 621-overlapping part, 622-side wall part, 623-inward folding part. Detailed Implementation

[0022] 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, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0023] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0024] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0025] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0026] like Figures 1-2 As shown in the figure, the embodiment of this utility model provides a plastic can body, including: an integrally formed can body 5 and a can mouth structure. The can mouth structure includes a first can neck 4, a support ring 3, a second can neck 2 and a flange 1 arranged sequentially from bottom to top. The outer diameter of the support ring 3 is larger than the outer diameter of the first can neck 4 and the second can neck 2. There is a gap between the support ring 3 and the flange 1. The flange 1 has a first preset state and a second preset state. When the flange 1 is in the first preset state, the flange 1 is arranged parallel to the support ring 3. When the flange 1 is in the second preset state, the flange 1 is bent into the gap and forms an accommodating space with the second can neck 2 for accommodating the edge of the aluminum foil tear-off cap 6.

[0027] In the embodiment, the plastic can body includes an integrally formed can body 5 and a can mouth structure arranged at the upper end of the can body 5. The can mouth structure is arranged in a structure from bottom to top, specifically including: a first can neck 4, a support ring 3, a second can neck 2 and a flange 1. The outer diameter of the support ring 3 is greater than the outer diameters of the first can neck 4 and the second can neck 2, so that the support ring 3 forms an outwardly protruding annular structure.

[0028] A certain gap is formed between the support ring 3 and the flange 1, which is used to accommodate the position change of the flange 1 in different states. Specifically, the flange 1 has two preset states: a first preset state and a second preset state. When the flange 1 is in the first preset state, the flange 1 is arranged in parallel with the support ring 3, that is, the flange 1 is in a horizontal state; when the flange 1 is in the second preset state, the flange 1 is bent downward and enters the above-mentioned gap, at this time, an annular accommodation space is formed between the flange 1 and the second can neck 2, which is used to accommodate the edge portion of the aluminum foil cover 6. Through this structure design, the aluminum foil cover 6 originally only used for aluminum cans or tin cans can be matched with plastic cans, effectively expanding the application scenarios of the aluminum foil cover 6, and enriching the sealing forms of the plastic can body.

[0029] In a specific embodiment, the plastic can body is made by the two-step method of injection-blowing. First, the whole can blank is injected on the equipment by the injection molding process, and the can blank includes a blank mouth, a blank body and a blank bottom. The blank mouth part includes the structures of the flange 1, the second can neck 2, the support ring 3 and the first can neck 4. Then, the blank body and the blank bottom part of the can blank are blow molded to form the can body 5, thereby obtaining an integrally formed plastic can body.

[0030] In an embodiment, the width of the flange 1 is 2.7-3.5mm, and the thickness is 0.3-0.5mm.

[0031] In the embodiment, the flange 1 is annular, and its width is the difference between the inner diameter and the outer diameter. Such a size design is to match the aluminum foil cover 6 of the conventional specifications of 300, 307, 401, 502, 603, etc. on the market. When the aluminum foil cover 6 is installed on the plastic can body, the flange 1 changes from the first preset state to the second preset state, and the design of the width and thickness can ensure that it is tightly matched with the edge portion of the aluminum foil cover 6, thereby achieving good sealing effect.

[0032] In an embodiment, the height of the second can neck 2 is 6-8mm.

[0033] In the present embodiment, the flange 1 is arranged on the outer periphery of the second can neck. The height design cooperates with the width of the flange 1, and when the flange 1 is in the second preset state, the height of the second can neck 2 can ensure that a sufficient accommodation space is formed between the flange 1 and the second can neck 2 for accommodating the edge portion of the aluminum foil tear-off cover 6, thereby ensuring that the aluminum foil tear-off cover 6 can be reliably mounted on the can mouth structure. At the same time, when the flange 1 is in the second preset state, the height of the second can neck 2 can also ensure that an appropriate gap is maintained between the flange 1 and the support ring 3, facilitating the user to open the flange 1 through the gap.

[0034] In an embodiment, the width of the support ring 3 is 3.5-4 mm, and the thickness is 1.8-2.5 mm.

[0035] In the present embodiment, the support ring 3 also has a ring shape, and the width thereof is the difference between the inner diameter and the outer diameter. This size design of the support ring 3 is mainly based on the following considerations: first, the width of the support ring 3 is greater than the outer diameters of the first can neck 4 and the second can neck 2, forming an outwardly protruding ring structure, which can provide protection for the flange in the second preset state and the aluminum foil tear-off cover 6 thereon, avoiding the accidental opening of the flange 1 by an external object inserted between the flange 1 and the second can neck 2 along the first can neck 4 during transportation or carrying of the plastic can. Second, the thickness design of the support ring 3 ensures that it has sufficient strength to withstand a certain pressure, preventing the plastic can from deforming and losing its original function during transportation or carrying.

[0036] In an embodiment, the height of the first can neck 4 is 4.5-11 mm.

[0037] In the present embodiment, the first can neck 4 is located below the support ring 3, and the height design is mainly based on the following considerations: first, the first can neck 4 needs to form a good transition connection with the can body 5 to ensure the stability of the overall structure; second, the height design of the first can neck 4 can provide sufficient support distance for the support ring 3, so that the protection function of the support ring 3 can be effectively exerted, further avoiding accidental contact of an external object with the flange 1 in the second preset state during transportation or carrying.

[0038] In an embodiment, the wall thickness of the can body 5 is greater than or equal to 0.5 mm; the thickness at the center position of the bottom of the can body 5 is greater than or equal to 1.55 mm.

[0039] In the present embodiment, the wall thickness of the can body 5 is greater than or equal to 0.5 mm, in order to ensure that the can body has sufficient strength to withstand the pressure and impact during normal use. During the injection-blow molding process, the can blank will stretch and thin during blowing. By reasonably controlling the process parameters and the stretch ratio, the wall thickness of the finally formed can body 5 is maintained above 0.5 mm, thereby ensuring product quality.

[0040] Secondly, the thickness of the bottom center of the can body 5 is required to be greater than or equal to 1.55 mm, because the can bottom is the key part of the load bearing, and needs to have a greater thickness to provide sufficient support strength. At the same time, the thicker bottom design is also conducive to the vertical stability of the can body.

[0041] The design of these wall thickness parameters not only meets the use requirements of the product, but also fully considers the realizability of the injection-blowing process, so that the product has good production stability and quality reliability.

[0042] In an embodiment, the can body 5 is cylindrical, prismatic, conical or oblate cylindrical.

[0043] In this embodiment, the can body 5 can be designed as cylindrical, prismatic, conical or oblate cylindrical. The shape of the can body 5 can be selected according to actual requirements. This design flexibility is mainly due to the use of the injection-blowing two-step manufacturing process. Specifically, in the injection process, the can blank is first prepared, and then by changing the shape of the inner cavity of the blow mold, the blank body and the blank bottom of the can blank can be blown into a can body 5 of different shapes. Compared with traditional aluminum cans or tin cans, this manufacturing process gives the plastic can greater freedom of modeling, and the appropriate can body shape can be selected according to the product positioning, use scene and other requirements.

[0044] As shown in Figure 3 According to the above plastic can body, the utility model embodiment still provides a kind of plastic can, including the plastic can body of any one of preceding embodiment and aluminum foil tear cover 6, aluminum foil tear cover 6 includes cover portion 61 and the packaging portion being arranged at the outer periphery of cover portion 61, cover portion 61 covers on the top of can mouth structure, and packaging portion is covered in the accommodation space formed between the outer side of flanging 1 and second can neck 2 and is bent and extends.

[0045] In this embodiment, the aluminum foil tear cover 6 includes a cover portion 61 located at the center and a packaging portion arranged at the outer periphery of the cover portion 61. In actual application, the cover portion 61 covers the top of the can mouth structure for sealing the can mouth; the packaging portion is wrapped on the outer side of the flanging 1 and is bent multiple times along the edge of the flanging 1, extending into the accommodation space formed between the flanging 1 and the second can neck 2.

[0046] The aluminum foil tear cover 6 of the present embodiment can use the conventional 300, 307, 401, 502, 603 and other specifications on the market, which are matched with the size of the can mouth structure of the plastic can body. During installation, the packaging portion of the aluminum foil tear cover 6 is attached to the outer and inner sides of the flanging 1, and then the flanging 1 is changed from the first preset state (horizontal state) to the second preset state (bent downward state). After the flanging 1 completes the state change, the aluminum foil tear cover 6 can be tightly matched with the can mouth structure to form a reliable seal. Through this design, the aluminum foil tear cover 6 can be successfully applied to the plastic can, effectively supplementing the existing sealing method.

[0047] In an embodiment, the sealing part comprises a lap part 621, a side wall part 622 and an inner folding part 623 connected in sequence, wherein the lap part 621 is attached to the top surface of the second can neck 2, the side wall part 622 is attached to the outer surface of the flange 1, and the inner folding part 623 is inserted into the annular accommodation space.

[0048] In the embodiment, first, the lap part 621 is attached to the top surface of the second can neck 2. When the aluminum foil cover 6 is installed, the lap part 621 is in close contact with the top surface of the second can neck 2, forming the first sealing surface. This design ensures the sealing reliability of the top of the can opening.

[0049] Then, the side wall part 622 is attached to the outer surface of the flange 1. During the installation of the aluminum foil cover 6, the side wall part 622 is in close contact with the outer surface of the flange 1, and as the flange 1 changes from the first preset state to the second preset state, the side wall part 622 also follows the flange 1 to bend downward, forming the second sealing surface. This design enhances the reliability of the sealing.

[0050] Finally, the inner folding part 623 is inserted into the annular accommodation space formed between the flange 1 and the second can neck 2. The insertion of the inner folding part 623 not only forms the third sealing surface, but also enhances the connection strength of the aluminum foil cover 6 and the plastic can body by abutting between the flange 1 and the second can neck 2, ensuring that the aluminum foil cover 6 will not accidentally fall off during use.

[0051] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A plastic can body suitable for use in an aluminium foil tear-off closure, characterised in that, The application relates to a plastic can body suitable for an aluminum foil tear-off cover seal, comprising: an integrally-formed can body and a can mouth structure, the can mouth structure comprising a first can neck, a support ring, a second can neck and a flange arranged in sequence from bottom to top, the outer diameter of the support ring being larger than the outer diameters of the first can neck and the second can neck, a gap being formed between the support ring and the flange, the flange having a first preset state and a second preset state, wherein, when the flange is in the first preset state, the flange is arranged in parallel with the support ring, and when the flange is in the second preset state, the flange is bent in the gap and forms a containing space for containing an aluminum foil tear-off cover edge with the second can neck. The width of the flange is 2.7-3.5 mm, and the thickness is 0.3-0.5 mm.

2. The plastic can body suitable for an aluminum foil tear-off lid closure according to claim 1, characterized in that, The height of the second can neck is 6-8 mm.

3. The plastic can body suitable for an aluminum foil tear-off lid closure according to claim 2, characterized in that, The width of the support ring is 3.5-4 mm, and the thickness is 1.8-2.5 mm.

4. The plastic can body adapted for use with an aluminum foil tear-off lid closure according to claim 3, wherein, The height of the first can neck is 4.5-11 mm.

5. The plastic can body suitable for an aluminum foil tear-off lid closure according to claim 4, wherein The wall thickness of the can body is greater than or equal to 0.5 mm, and the thickness of the center position of the bottom of the can body is greater than or equal to 1.55 mm.

6. The plastic can body suitable for an aluminum foil tear-off lid closure according to claim 5, wherein, The can body is cylindrical, prismatic, conical or flat-cylindrical.

7. A plastic can body suitable for use in an aluminium foil tear-off lid closure according to any one of claims 1 to 6, characterised in that, The application relates to a plastic can body suitable for an aluminum foil tear-off cover seal, comprising: an integrally-formed can body and a can mouth structure, the can mouth structure comprising a first can neck, a support ring, a second can neck and a flange arranged in sequence from bottom to top, the outer diameter of the support ring being larger than the outer diameters of the first can neck and the second can neck, a gap being formed between the support ring and the flange, the flange having a first preset state and a second preset state, wherein, when the flange is in the first preset state, the flange is arranged in parallel with the support ring, and when the flange is in the second preset state, the flange is bent in the gap and forms a containing space for containing an aluminum foil tear-off cover edge with the second can neck.

8. A plastic can, characterized by ​

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