Plastic bottles that are easy to recycle in their entirety

Abstract

The present application relates to a plastic bottle that is easy to be recycled as a whole. The plastic bottle that is easy to be recycled as a whole described in the present application comprises: a combined bottle cap, a bottle mouth and a bottle body; the bottom end of the bottle mouth is fixed to the top of the bottle body, the inner wall of the bottle mouth is a conical wall with an increasing diameter along the axial direction, and the outer wall of the bottle mouth is a cylindrical wall with a constant diameter along the axial direction, so that the bottle mouth is larger at the top and smaller at the bottom; the combined bottle cap comprises an inner sleeve cap and an outer sleeve cap; the inner sleeve cap is annular; a receiving cavity matching the shape of the bottle mouth is formed in the inner sleeve cap, a plurality of uniformly distributed first ratchets are formed at the bottom of the outer wall of the inner sleeve cap, and a plurality of uniformly distributed second ratchets that cooperate with the first ratchets are formed on the side wall of the sleeve cavity of the outer sleeve cap, and the first ratchets and the second ratchets have opposite rotation directions. The plastic bottle that is easy to be recycled as a whole described in the present application has the advantage of being able to be recycled as a whole.

Description

Technical Field

[0001] The present application relates to the technical field of liquid packaging containers, and in particular to a plastic bottle that is easy to recycle as a whole. Background Art

[0002] Plastic bottles are made of materials such as polyethylene or polypropylene, and are made by adding a variety of organic solvents. Plastic bottles are widely made of polyester (PET), polyethylene (PE), and polypropylene (PP) as raw materials. After adding corresponding organic solvents, they are heated at high temperatures and blow-molded, extruded, or injection-molded through plastic molds. They are mainly used for liquid or solid disposable plastic packaging containers such as beverages, foods, pickles, honey, dried fruits, edible oils, and agricultural and veterinary drugs; plastic bottles have the characteristics of being not easy to break, low cost, high transparency, and food-grade raw materials.

[0003] Common liquid packaging containers, especially plastic bottles for storing beverages, are usually disposable and have a simple overall structure, including a bottle body and a bottle cap, with the bottle cap knob snapped onto the bottle mouth of the bottle body. In order to ensure tightness of the seal and anti-theft function, existing plastic bottles are equipped with anti-theft rings on the bottle caps. When the bottle cap is unlocked from the bottle body, the anti-theft ring will be disconnected from the bottle cap to prevent theft, thus ensuring the safety of the beverage in the bottle.

[0004] However, in order to ensure sealing and anti-theft opening, the plastic bottle structure of the prior art needs to use different materials for the bottle cap and the bottle body, so that the different materials have different hardnesses and the locking effect can be ensured. After the anti-theft ring is separated from the bottle cap, it cannot be conveniently removed from the bottle mouth, so that the recycled plastic bottles are mixed with different materials, which increases the cost of recycling and processing, and even makes the plastic bottles unable to be recycled due to different materials. Summary of the invention

[0005] Based on this, the purpose of the present application is to provide a plastic bottle that is easy to recycle as a whole, which has the advantages that the bottle cap and the bottle body are made of the same material and the sealing performance is guaranteed.

[0006] In one aspect of the present application, there is provided a plastic bottle that is easy to recycle as a whole, comprising a combined bottle cap, a bottle mouth and a bottle body;

[0007] The bottom end of the bottle mouth is fixedly connected to the top of the bottle body, the inner wall of the bottle mouth is a conical wall surface with increasing diameter along the axial direction, and the outer wall of the bottle mouth is a cylindrical wall surface with equal diameter along the axial direction, so that the bottle mouth is larger at the top and smaller at the bottom;

[0008] The combined bottle cap comprises an inner cover and an outer cover;

[0009] The inner sleeve cover is annular; a receiving cavity matching the shape of the bottle mouth is formed in the inner sleeve cover, and the surface of one side of the two side walls of the receiving cavity that fits with the conical wall surface is a conical surface, and the surface of the other side that fits with the cylindrical wall surface is a cylindrical surface; so that the bottle mouth fits tightly with the side wall of the receiving cavity; the inner wall of the inner sleeve cover is formed with an internal thread;

[0010] The outer sleeve cover is formed with an annular sleeve cavity, and the inner sleeve cover is sleeved in the sleeve cavity; the wall surface of the sleeve cavity that matches the inner thread is formed with an outer thread, and the other side wall of the sleeve cavity is tightly fitted with the outer wall of the inner sleeve cover;

[0011] The bottom of the outer wall of the inner cover is formed with a plurality of evenly distributed first ratchet teeth, and the side wall of the sleeve cavity of the outer cover is formed with a plurality of evenly distributed second ratchet teeth cooperating with the first ratchet teeth, and the first ratchet teeth and the second ratchet teeth have opposite rotation directions.

[0012] The plastic bottle that is easy to recycle as a whole described in the present application is provided with a first ratchet and a second ratchet, and the rotation directions of the two ratchet teeth are opposite, so as to realize the function of anti-theft opening. In addition, the plastic bottle of the present application also has good sealing effect and sealing performance. First, the first layer of line sealing is realized by the close cooperation of the internal thread and the external thread; secondly, the second layer of surface sealing is realized by the close cooperation of the top of the outer surface of the inner sleeve cover and the top surface of the sleeve cavity of the outer sleeve cover; thirdly, the third layer of surface sealing is realized by the close cooperation of the outer wall of the inner sleeve cover and the side wall of the sleeve cavity of the outer sleeve cover; finally, the fourth layer of surface sealing is realized by the close fit of the accommodating cavity of the inner sleeve cover and the outer surface of the bottle mouth. Through the sealing effect of the above four layers, a comprehensive sealing effect is guaranteed, and liquid penetration and outflow are effectively prevented. Therefore, through such a sealing effect setting and the setting of the anti-theft opening function, the materials of the combined bottle cap, bottle mouth and bottle body can be the same, thereby ensuring the easy realization of the overall recycling of the bottle.

[0013] Furthermore, the outer cover is located above the second ratchet tooth and forms an outer tearing annular gap, and the upper and lower sides of the outer tearing annular gap are connected by a plurality of connecting bridges.

[0014] Furthermore, an inner tear annular gap is formed on the top surface of the inner sleeve cover, and the left and right sides of the inner tear annular gap are connected by a plurality of connecting bridges.

[0015] Further, the rotation direction of the first ratchet tooth is the same as the rotation direction of the internal thread, and the rotation direction of the second ratchet tooth is opposite to the rotation direction of the internal thread.

[0016] Furthermore, the top of the bottle mouth is rounded or has a sharp transition angle; the top shape of the accommodating cavity matches the top shape of the bottle mouth, so that the bottle mouth is tightly connected to the top of the accommodating cavity.

[0017] Furthermore, the bottle mouth and the bottle body are integrally formed; the combined bottle cap and the bottle body are made of the same material.

[0018] Furthermore, the bottom surface of the inner cover located on the inner side of the bottle mouth is a conical surface, and the side close to the bottle mouth is lower.

[0019] Furthermore, a circular hole is formed in the middle of the outer cover, and a sealing thin plate is fixedly provided at the bottom end of the outer cover located at the circular hole to block the circular hole.

[0020] Furthermore, it also includes a film sticker, which is attached to the upper surface of the outer cover to cover the top surface of the circular hole.

[0021] Furthermore, a plurality of vertical ridges are formed on the outer side wall of the outer cover to increase the friction force of the side wall of the outer cover.

[0022] For better understanding and implementation, the present application is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A front view of a plastic bottle that is convenient for integral recycling according to an exemplary embodiment of the present application;

[0024] Figure 2 for Figure 1 a cross-sectional view of the structure shown;

[0025] Figure 3 for Figure 2 A magnified view of the local structure I in FIG.

[0026] Figure 4 This is a schematic diagram of a three-dimensional structure that is convenient for overall recycling according to an exemplary embodiment of the present application;

[0027] Figure 5 This is another exemplary schematic diagram of a three-dimensional structure that is convenient for overall recycling in this application;

[0028] Figure 6 This is another exemplary schematic diagram of a three-dimensional structure that is convenient for overall recycling in this application;

[0029] Figure 7 This is a front view of a plastic bottle (excluding the outer cover) that is convenient for overall recycling according to an example of the present application;

[0030] Figure 8 for Figure 7 a cross-sectional view of the structure shown;

[0031] Fig. 9 This is a schematic diagram of a three-dimensional structure of a plastic bottle (excluding a cover) that is easy to recycle as a whole according to an example of the present application;

[0032] Fig.10 A top view of a plastic bottle (excluding the outer cover) that is convenient for overall recycling according to an exemplary embodiment of the present application;

[0033] Fig.11 A cross-sectional view of a partial structure of another exemplary plastic bottle (excluding the outer cover) that is convenient for overall recycling according to the present application;

[0034] Fig.12 for Fig.11 A schematic diagram of the three-dimensional structure of the structure shown in the example;

[0035] Fig.13 This is a schematic diagram of the principle of the assembly relationship between the first ratchet and the second ratchet of the present application. DETAILED DESCRIPTION

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating positions or positional relationships, are based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0037] It should be noted that Figure 1 A front view of a plastic bottle that is convenient for integral recycling according to an exemplary embodiment of the present application;

[0038] Figure 2 for Figure 1 A cross-sectional view of the structure shown (for ease of expression and understanding, the inner cover is not hatched);

[0039] Figure 3 for Figure 2 An enlarged view of the local structure I in FIG. 1 (different from other cross-sectional views in this application, Figure 3 All sections are marked with hatching lines); Figure 1 As one embodiment, Figure 1 , 2 , 3 is a group of pictures;

[0040] Figure 4 This is a schematic diagram of an exemplary three-dimensional structure that is convenient for overall recycling in the present application; Figure 4 For another embodiment;

[0041] Figure 5 This is another exemplary schematic diagram of a three-dimensional structure that is convenient for overall recycling in this application; Figure 5For yet another embodiment;

[0042] Figure 6 This is another exemplary schematic diagram of a three-dimensional structure that is convenient for overall recycling in this application; Figure 6 As yet another embodiment;

[0043] Figure 7 This is a front view of a plastic bottle (excluding the outer cover) that is convenient for overall recycling according to an example of the present application;

[0044] Figure 8 for Figure 7 A cross-sectional view of the structure shown (for ease of expression and understanding, the inner cover is not hatched);

[0045] Fig. 9 This is a schematic diagram of a three-dimensional structure of a plastic bottle (excluding a cover) that is easy to recycle as a whole according to an example of the present application;

[0046] Fig.10 A top view of a plastic bottle (excluding the outer cover) that is convenient for overall recycling according to an exemplary embodiment of the present application; Figure 7 , 8 , 9, and 10 are a group of structures;

[0047] Fig.11 A cross-sectional view of a partial structure of another exemplary plastic bottle (excluding an outer cover) for overall recycling according to the present application (for the convenience of expression and understanding, the inner cover is not hatched);

[0048] Fig.12 for Fig.11 A schematic diagram of the three-dimensional structure of the structure shown in the example; Fig.11 , 12 A structure of another embodiment;

[0049] Fig.13 This is a schematic diagram of the principle of the assembly relationship between the first ratchet and the second ratchet of the present application (for easier understanding, the first ratchet and the connected inner sleeve cover are sectioned only to distinguish them from the second ratchet, and does not indicate that this is the cross-sectional structure of the combined bottle cap, and other structures of the combined bottle cap are not shown in this figure).

[0050] See also Figure 1-Figure 13 ; An exemplary plastic bottle of the present application that is easy to recycle as a whole comprises a combined bottle cap, a bottle mouth 11 and a bottle body 10;

[0051] The bottom end of the bottle mouth 11 is fixedly connected to the top of the bottle body 10, and the inner wall of the bottle mouth 11 is a conical wall surface A with an increasing diameter along the axial direction (downward), and the outer wall of the bottle mouth 11 is a cylindrical wall surface with a constant diameter along the axial direction, so that the bottle mouth 11 is larger at the top and smaller at the bottom;

[0052] The combined bottle cap comprises an inner cover 20 and an outer cover 30;

[0053] The inner sleeve cover 20 is annular; a receiving cavity matching the shape of the bottle mouth 11 is formed in the inner sleeve cover 20, and the surface of one side of the two side walls of the receiving cavity that fits with the conical wall surface A is a conical surface, and the surface of the other side that fits with the cylindrical wall surface is a cylindrical surface; so that the bottle mouth 11 fits tightly with the side wall of the receiving cavity; the inner wall of the inner sleeve cover 20 is formed with an internal thread 62;

[0054] The outer cover 30 is formed with an annular sleeve cavity P, and the inner cover 20 is sleeved in the sleeve cavity P; the wall surface of the sleeve cavity P that matches the inner thread 62 is formed with an outer thread 61, and the other side wall of the sleeve cavity P is tightly fitted with the outer wall of the inner cover 20;

[0055] A plurality of evenly distributed first ratchet teeth 71 are formed at the bottom of the outer wall of the inner sleeve cover 20, and a plurality of evenly distributed second ratchet teeth 72 cooperating with the first ratchet teeth 71 are formed on the side wall of the sleeve cavity P of the outer sleeve cover 30, and the first ratchet teeth 71 and the second ratchet teeth 72 have opposite rotation directions.

[0056] The plastic bottle that is easy to recycle as a whole described in the present application is provided with a first ratchet 71 and a second ratchet 72, and the rotation directions of the two are opposite, so as to realize the function of anti-theft opening. In addition, the plastic bottle of the present application also has good sealing effect and sealing performance. First, the first layer of line sealing is realized by the close cooperation of the internal thread 62 and the external thread 61; secondly, the second layer of surface sealing is realized by the close cooperation of the top of the outer surface of the inner sleeve cover 20 and the top surface of the sleeve cavity P of the outer sleeve cover 30; thirdly, the third layer of surface sealing is realized by the close cooperation of the outer side wall of the inner sleeve cover 20 and the side wall of the sleeve cavity P of the outer sleeve cover 30; finally, the fourth layer of surface sealing is realized by the close fit of the accommodating cavity of the inner sleeve cover 20 and the outer surface of the bottle mouth 11. Through the sealing effect of the above four layers, a comprehensive sealing effect is guaranteed, and liquid penetration and outflow are effectively prevented. Therefore, through such a sealing effect setting and the setting of the anti-theft opening function, the material of the combined bottle cap, the bottle mouth 11 and the bottle body 10 can be the same, thereby ensuring the easy realization of the overall recycling of the bottle.

[0057] In addition, since the bottle cap and the bottle mouth 11 are combined to form a multi-layer structure, if a transparent material is used, it becomes opaque due to the multi-layer structure to achieve the effect of light protection. In addition, since the transparent material is used, its own structural strength is slightly weaker than that of the opaque material, and the present application has a multi-layer structure, so the structural strength of the bottle cap is better guaranteed, thereby ensuring the sealing performance.

[0058] In addition, due to the multi-layer structure of the bottle cap, the light transmission effect of the bottle cap is weakened, so that some functions that require shading or shielding at the bottle cap can be realized, such as engraving, which can only be seen after opening the cap.

[0059] In some preferred embodiments, an outer tear annular gap L1 is formed above the second ratchet tooth 72 of the outer cover 30 , and the upper and lower sides of the outer tear annular gap L1 are connected by a plurality of connecting bridges (not shown).

[0060] As shown in the drawings, after the outer tearing gap L1 is set, when the first ratchet 71 and the second ratchet 72 collide and rotate in opposite directions, the connecting bridge at the outer tearing gap L1 is torn, so that the anti-theft ring 31 of the outer cover 30 is separated from the outer cover 30 body.

[0061] In some further solutions, the height of the inner cover 20 is 5-25mm, the height of the outer cover 30 is 5-25mm, the height of the first ratchet 71 is more than 30% of the height of the inner cover 20, and the height of the second ratchet 72 is the same as the height of the first ratchet 71. In one example, the height of the inner cover 20 is 20mm, the height of the outer cover 30 is 20mm, the height of the first ratchet 71 is 6mm, and the height of the second ratchet 72 is 6mm. Under such a dimensional relationship, even if there is a slight misalignment in the height direction between the outer cover 30 and the inner cover 20, it does not affect the collision of the first ratchet 71 and the second ratchet 72, so that no matter how the height position of the first ratchet 71 and the second ratchet 72 is finely adjusted, there will always be an intersection, and there will always be a reverse collision and mutual restraint.

[0062] In some preferred embodiments, the bottle mouth 11 is integrally formed with the bottle body 10. In this case, there is no obvious dividing line between the bottle mouth 11 and the bottle body 10. In such an example, the bottle mouth 11 is the top part of the bottle body 10; or, the trumpet-shaped part is the bottle mouth 11, and the straight-cylindrical part is the bottle body 10.

[0063] In some preferred embodiments, the top surface of the inner sleeve cover 20 is formed with an inner tear annular gap L2, and the left and right sides of the inner tear annular gap L2 are connected by multiple connecting bridges. In this further scheme, two ways of unlocking and anti-theft opening of the bottle cap are provided. The first is to simply tear the connecting bridge at the outer tear annular gap L1, so that the anti-theft ring 31 is separated from the outer sleeve cover 30 body; the second is that when the outer sleeve cover 30 is turned, the outer sleeve cover 30 drives the inner sleeve cover 20 to rotate together, so that the connecting bridge at the inner tear annular gap L2 of the inner sleeve cover 20 is torn. In this case, after the outer sleeve cover 30 is separated from the bottle mouth 11, the outer part of the inner sleeve cover 20 will be separated from the bottle mouth 11, which will make the sealing effect of the bottle mouth 11 worse when the bottle cap is turned again, so as to play a role in preventing reverse opening, and at the same time make the sealing of the bottle cap disposable.

[0064] In addition, since the inner tear ring gap L2 is located on the top surface of the inner sleeve cover 20, or even in the middle of the top surface, even if the outer half ring of the inner sleeve cover 20 is loosened and falls off, the remaining part of the top surface of the inner sleeve cover 20 will be abutted by the top surface of the bottle mouth 11, and the other half ring of the inner sleeve cover 20 will not fall into the bottle body 10.

[0065] In some preferred embodiments, the rotation direction of the first ratchet tooth 71 is the same as the rotation direction of the internal thread 62, and the rotation direction of the second ratchet tooth 72 is opposite to the rotation direction of the internal thread 62. Referring to the state shown in the accompanying drawings, the top view is used as an example. In this view, the internal thread 62 gradually moves away from the observer in the clockwise direction, and at this time, the outer cover 30 of the knob is turned, which causes the outer cover 30 to be locked relative to the inner cover 20. At the same time, the rotation direction of the first ratchet tooth 71 also gradually increases with the clockwise direction, while the tooth tip of the second ratchet tooth 72 rotates in the counterclockwise direction. If the knob outer cover 30 is turned clockwise, the back side of the second ratchet tooth 72 will contact with the back side of the first ratchet tooth 71, and the relative friction force will be small, thereby causing the anti-theft ring 31 to be expanded during the contact between the two. If the knob outer cover 30 is turned counterclockwise, the first ratchet tooth 71 and the second ratchet tooth 72 will collide head-on, and the relative friction force will be large. Under the action of resistance, the first ratchet tooth 71 and the second ratchet tooth 72 are difficult to be separated, and the force continuously loaded on the outer cover 30 causes the connecting bridge on the outer tear ring gap L1 to be torn.

[0066] In some preferred embodiments, a separation groove K is formed on the inner wall of the inner sleeve cover 20 so that the internal thread 62 is divided into multiple unconnected sections, so that the internal thread 62 can be deformed more easily.

[0067] In the example shown in the figure, four evenly distributed dividing grooves K are provided.

[0068] In some preferred embodiments, a sealing ring (not shown) is further included. The sealing ring is installed on the top surface of the sleeve cavity P, so that the seal between the outer sleeve cover 30 and the inner sleeve cover 20 is tighter, thereby achieving the effect of a fifth layer of surface sealing.

[0069] In some preferred embodiments, the top of the bottle mouth 11 is rounded or acutely angled; the top shape of the accommodating cavity matches the top shape of the bottle mouth 11, so that the bottle mouth 11 is tightly connected to the top of the accommodating cavity. In the structure shown in the drawings, one of the transitions between the end surface of the top of the bottle mouth 11 and its inner and outer side walls is a right-angle transition and the other is an acute-angle transition; these two places can also be arc transitions.

[0070] In some preferred embodiments, the bottle mouth 11 and the bottle body 10 are integrally formed; the combined bottle cap and the bottle body 10 are made of the same material.

[0071] Furthermore, the bottle body 10 is made of PP material or PE material, or PET material, etc. Thus, the bottle body 10 can be transparent or opaque.

[0072] In some preferred embodiments, the bottom surface of the inner sleeve cover 20 located inside the bottle mouth 11 is a conical surface B, and the conical surface B is lower on the side close to the bottle mouth 11. The shape of the conical surface B as shown in the figure makes it easier for the liquid in the bottle body 10 to flow along the conical surface B and flow out from the inner hole of the inner sleeve cover 20, and it is not easy to enter the gap between the inner sleeve cover 20 and the bottle mouth 11.

[0073] In some preferred embodiments, there are at least two ways to assemble the inner sleeve cover 20 and the bottle mouth 11. One is to use a hot pressing process to expand the inner sleeve cover 20 due to heat, and then sleeve it on the bottle mouth 11 under pressure. After the inner sleeve cover 20 cools down, the inner sleeve cover 20 will be tightly wrapped and sleeved on the bottle mouth 11. The other is to sleeve it on the bottle mouth 11 by cold pressing. Before sleeve, sealant is applied on the surface of the bottle mouth 11. After the sealant cools down, the gap between the inner sleeve cover 20 and the bottle mouth 11 is filled and tightened. Even if the above processing technology is not used, even if cold pressing is used for assembly, the inner sleeve cover 20 and the bottle mouth 11 can be tightly connected by clamping the outer sleeve cover 30 in two directions.

[0074] In some preferred embodiments, a circular hole M is formed in the middle of the outer cover 30, and a sealing thin plate 31 is fixedly provided at the bottom end of the outer cover 30 located at the circular hole M to block the circular hole M. In some schemes, the sealing thin plate 31 can be directly pierced to conveniently obtain the liquid in the bottle without the need to unlock the bottle cap with a knob.

[0075] In some further examples, the thickness of the sealing sheet 31 is 1-3 mm; in a further solution, the wall thickness at the edge of the sealing sheet 31 is thinner, and the wall thickness in the middle is thicker, so that the edge of the sealing sheet 31 is easier to be punctured.

[0076] It can be understood that the sealing plate 31 is circular.

[0077] In some preferred embodiments, a cross reinforcing rib 40 is provided in the circular hole M of the outer cover 30. The cross reinforcing rib 40 can better ensure the structural stability of the circular hole M, and further ensure that the inner wall of the outer cover 30 is not easily deformed. In this example, the circular hole M is provided to reduce the overall weight and material amount of the outer cover 30 to reduce the manufacturing cost, and the cross reinforcing rib 40 is provided to improve the strength and stability of the outer cover 30.

[0078] In some preferred embodiments, a thin film sticker 50 is further included, which is pasted on the upper surface of the outer cover 30 to cover the top surface of the circular hole M. The thin film sticker 50 is provided to cover the circular hole M and avoid piercing the sealing sheet 31 on the end surface of the circular hole M.

[0079] In some preferred embodiments, the outer side wall of the outer cover 30 is formed with a plurality of vertical ridges 32 , and the ridges 32 are provided to increase the friction force of the side wall of the outer cover 30 .

[0080] In some preferred embodiments, a convex ring 21 is formed at the bottom of the outer side wall of the inner sleeve cover 20 , and the convex ring 21 is located below the anti-theft ring 31 .

[0081] In some other examples, the outer wall of the outer cover 30 is formed with a frosted surface to increase its friction.

[0082] The plastic bottle of the present application which is easy to recycle as a whole, the bottle body 10 and the bottle mouth 11 can be made into a bottle embryo through a mold, and then formed by blow molding, the inner cover 20 and the outer cover 30 can be manufactured and formed by molds respectively; the inner cover 20 is connected and fastened to the bottle mouth 11 through a hot pressing or cold pressing process, and the outer cover 30 can be sleeved on the inner cover 20 by hot pressing, cold pressing, or a knob.

[0083] The plastic bottle of the present application that is easy to recycle as a whole has, firstly, a uniform material as a whole; secondly, the overall structural strength can be guaranteed, and thus the overall sealing performance can be guaranteed; thirdly, it has a dual anti-theft opening function; finally, based on the above functions and effects, the whole can be easily recycled, and no other processing and operation are required during recycling, thus reducing the recycling cost. Due to the non-renewable nature of resources, the plastic bottle obtained by the present application can more easily realize the reuse of materials, reduce costs and save energy.

[0084] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. A plastic bottle that is easy to recycle as a whole, characterized by: Including a combined bottle cap, a bottle mouth and a bottle body; The bottom end of the bottle mouth is fixedly connected to the top of the bottle body, the inner wall of the bottle mouth is a conical wall surface with increasing diameter along the axial direction, and the outer wall of the bottle mouth is a cylindrical wall surface with constant diameter along the axial direction; The combined bottle cap comprises an inner cover and an outer cover; The inner sleeve cover is annular; a receiving cavity matching the shape of the bottle mouth is formed in the inner sleeve cover, and the surface of one side of the two side walls of the receiving cavity that fits with the conical wall surface is a conical surface, and the surface of the other side that fits with the cylindrical wall surface is a cylindrical surface; so that the bottle mouth fits tightly with the side wall of the receiving cavity; the inner wall of the inner sleeve cover is formed with an internal thread; The outer sleeve cover is formed with an annular sleeve cavity, and the inner sleeve cover is sleeved in the sleeve cavity; the wall surface of the sleeve cavity that matches the inner thread is formed with an outer thread, and the other side wall of the sleeve cavity is tightly fitted with the outer wall of the inner sleeve cover; A plurality of evenly distributed first ratchet teeth are formed at the bottom of the outer wall of the inner cover, and a plurality of evenly distributed second ratchet teeth cooperating with the first ratchet teeth are formed on the side wall of the sleeve cavity of the outer cover, wherein the first ratchet teeth and the second ratchet teeth have opposite rotation directions; The outer cover is located above the second ratchet tooth and forms an outer tearing annular gap, and the upper and lower sides of the outer tearing annular gap are connected by a plurality of connecting bridges; An inner tear annular gap is formed on the top surface of the inner sleeve cover, and the left and right sides of the inner tear annular gap are connected by a plurality of connecting bridges; The rotation direction of the first ratchet tooth is the same as that of the internal thread, and the rotation direction of the second ratchet tooth is opposite to that of the internal thread.

2. The plastic bottle that is easy to recycle as a whole according to claim 1, characterized in that: The top of the bottle mouth is rounded or has a sharp transition angle; the top shape of the accommodating cavity matches the top shape of the bottle mouth, so that the bottle mouth is tightly connected to the top of the accommodating cavity.

3. The plastic bottle that is easy to recycle as a whole according to claim 1, characterized in that: The bottle mouth and the bottle body are integrally formed; the combined bottle cap and the bottle body are made of the same material.

4. The plastic bottle that is easy to recycle as a whole according to claim 1, characterized in that: The bottom surface of the inner sleeve cover located on the inner side of the bottle mouth is a conical surface, and the side close to the bottle mouth is lower.

5. The plastic bottle that is easy to be recycled as a whole according to any one of claims 1 to 4, characterized in that: A circular hole is formed in the middle of the outer cover, and a sealing thin plate is fixedly arranged at the bottom end of the outer cover located at the circular hole to block the circular hole.

6. The plastic bottle that is easy to recycle as a whole according to claim 5, characterized in that: It also includes a film sticker, which is attached to the upper surface of the outer cover to cover the top surface of the circular hole.

7. The plastic bottle that is easy to be recycled as a whole according to claim 5, characterized in that: The outer side wall of the outer cover is formed with a plurality of vertical ridges to increase the friction force of the side wall of the outer cover.

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