Completely recyclable combined container and manufacturing method thereof

Abstract

The invention provides a combined container capable of being completely recycled and a manufacturing method of the combined container. The combined container structurally comprises a bottle cap, a bottle shoulder, a bottle body, a bottle bottom and an inner container. The bottle cap, the bottle shoulder and the bottle bottom are made of biodegradable plastic and are manufactured through an injection molding technology; the bottle body is made of waterproof paper; the bottle cap, the bottle shoulder, the bottle body and the bottle bottom are detachably combined to form a shell structure of the container, the inner container is made of biodegradable plastic in a blow molding mold in advance through a blow molding process, and then the inner container is detachably assembled in the shell structure. All parts of the container capable of being completely recycled are made of biodegradable or degradable materials, and all the parts can be disassembled, classified and recycled, so that the requirements of environmental protection and recycling are completely met.

Description

Technical Field

[0001] The present application relates to a container structure and a manufacturing method thereof, in particular to a fully recyclable modular container and a manufacturing method thereof. Background Art

[0002] Currently, the most widely used beverage containers on the market are plastic bottles (also known as PET bottles). Traditional plastic bottles are primarily made from polyethylene terephthalate (PET). Due to the large-scale production and use of PET bottles worldwide, and their non-biodegradability, the issue of how to deal with PET bottle waste has become a major environmental issue facing all countries.

[0003] To address the environmental issues caused by plastic bottles, containers made from biodegradable, environmentally friendly materials have been proposed and put into mass production. For example, manufacturers in the United States, the United Kingdom, the Netherlands, and Denmark have introduced paper-based PET bottles, manufactured entirely using one-piece molding technology. While these PET bottles, made entirely from paper and molded entirely using one-piece molding, offer the advantages of ease and speed of production, they lack structural strength and pressure resistance, making them unsuitable for use as soda bottles or for other pressurized beverages or liquids, such as sparkling water.

[0004] To address these issues, the applicant has proposed, in its approved invention patent application in Taiwan (Certificate No. I766398) and EUIPO (EUIPO) (EP3988465B1), a liquid container made entirely of natural plant materials, comprising a cap, an upper body, a body, and a base. This liquid container, constructed from natural plant materials, possesses excellent structural strength, can withstand radial and lateral pressure, and is naturally or biodegradable, resolving the environmental challenges associated with traditional plastic bottles.

[0005] Currently, natural material containers (e.g., paper bottles) need to meet the following requirements to meet increasingly stringent environmental regulations and industry demands. The requirements are prioritized as follows:

[0006] (1) All components can be recycled and reused;

[0007] (2) Made from bio-based raw materials; and

[0008] (3) Biodegradable or biodegradable.

[0009] Although the patented invention technology "Liquid Container Made of All-Natural Plant Materials" proposed by the applicant is made of all-natural plant materials, the three components of the upper bottle body, the bottle body, and the bottle base are connected together by gluing to form a container capable of storing liquids. This makes it difficult to disassemble the components and achieve complete recycling. Summary of the Invention

[0010] The purpose of this application is to solve the problems of insufficient structural strength and compressive strength of paper PET bottles made entirely of one-piece molding technology in the prior art, as well as the environmental problems caused by traditional plastic bottles and paper containers. Furthermore, it aims to provide a container that can be fully recycled, manufactured using bio-based raw materials, and can be biodegraded or biodegradable.

[0011] A preferred embodiment of the fully recyclable combined container of the present application comprises: a bottle cap, a bottle shoulder, a bottle body, a bottle bottom and an inner liner; the bottle cap, bottle shoulder and bottle bottom are made of biodegradable plastic by injection molding technology; the inner liner is made of biodegradable plastic by blow molding inside a blow molding mold, and an opening is formed at the top of the inner liner; the top of the bottle shoulder has a bottle mouth that can be connected to the bottle cap, the bottle body is made of a spiral paper tube, and the top of the bottle shoulder has a bottle mouth that can be connected to the bottle cap The bottle bottom comprises a bottom surface and a side wall surrounding the bottom surface, the side wall can be inserted into the bottom end of the bottle body, the bottom end of the bottle body and the side wall have a second snap-fit structure, and the bottle body and the bottle bottom are detachably combined together through the second snap-fit structure. The bottle shoulder, bottle body and bottle bottom are combined into the outer shell structure of the container, and the liner can be detachably assembled inside the outer shell structure.

[0012] The present application also includes a method for manufacturing a fully recyclable modular container, comprising the following steps:

[0013] Use spiral paper tubes to make a bottle body;

[0014] A liner is made of biodegradable plastic in a blow molding mold by a blow molding process, and an opening is formed at the top of the liner;

[0015] A bottle cap, a bottle shoulder, and a bottle bottom are made of biodegradable plastic by injection molding technology. The top of the bottle shoulder has a bottle mouth that can be connected to the bottle cap. The bottle shoulder extends toward the bottom end to have a connecting portion that can be inserted into the top of the bottle body. The connecting portion between the top of the bottle body and the bottle shoulder has a first snap-fit structure, and the bottle shoulder and the bottle body can be detachably connected together by the first snap-fit structure. The bottle bottom includes a bottom surface and a side wall surrounding the bottom surface, and the side wall can be inserted into the bottom end of the bottle body. The bottom end of the bottle body and the side wall have a second snap-fit structure, and the bottle body and the bottle bottom can be detachably connected together by the second snap-fit structure.

[0016] The bottle shoulder, the bottle body and the bottle bottom are combined into the outer shell structure of the container, and the inner liner is detachably assembled inside the outer shell structure.

[0017] Preferably, the bottle shoulder has an external thread near the bottle mouth, and the inner side of the bottle cap has an internal thread, and the bottle cap can be screwed together with the external thread of the bottle shoulder through the internal thread.

[0018] Preferably, the first engaging structure includes: a first thread arranged at the top end of the bottle body, and a second thread arranged at the connecting portion of the bottle shoulder, and the first thread and the second thread can be screwed together; the second engaging structure includes: a third thread arranged at the bottom end of the bottle body, and a fourth thread arranged on the side wall of the bottle bottom, and the third thread and the fourth thread can be screwed together.

[0019] Preferably, the first engaging structure includes: a first engaging groove arranged at the top end of the bottle body and protruding in the radial direction, and a first latch arranged at the connecting portion of the bottle shoulder, the first engaging groove being able to rotatably engage with or separate from the first latch; the second engaging structure includes: a second engaging groove arranged at the bottom end of the bottle body and protruding in the radial direction, and a second latch arranged on the side wall of the bottle bottom, the second engaging groove being able to rotatably engage with or separate from the second latch.

[0020] Preferably, the bottle cap, bottle shoulder and bottle bottom are made of polybutylene succinate (PBS) through injection molding technology.

[0021] Preferably, the spiral paper tube used to make the bottle body is made by winding waterproof paper with a polybutylene succinate (PBS) film on the inner side.

[0022] Preferably, the biodegradable plastic used to make the liner is selected from the group consisting of bio-based polyester materials polyethylene furanoate (PEF) and polybutylene succinate (PBS).

[0023] Preferably, the opening edge of the top end of the inner liner has an annular skirt extending outward in a radial direction, and after the bottle cap is connected to the bottle mouth, the annular skirt is located between the bottle cap and the bottle mouth.

[0024] Preferably, the bottle shoulder includes a left bottle shoulder and a right bottle shoulder that can be combined with each other, the side wall edge of the left bottle shoulder has a left snap-fitting groove extending toward the right bottle shoulder, and the left snap-fitting groove can be engaged with a right snap-fitting groove corresponding to the side wall of the right bottle shoulder, and the side wall edge of the right bottle shoulder has a right snap-fitting groove extending toward the left bottle shoulder, and the right snap-fitting groove can be engaged with a left snap-fitting groove corresponding to the side wall of the left bottle shoulder.

[0025] The advantages and effects of the fully recyclable modular container and its manufacturing method of the present application are:

[0026] (1) All components of the container are assembled by means of a snap-fit structure, threads and rotation, without using any glue. They are easy to assemble and can be easily disassembled after recycling for classification and recycling.

[0027] (2) The inner liner can achieve the same gas and water barrier properties as traditional plastic bottles. The bottle body made of spiral paper tubes even exceeds the plastic bottle's resistance to internal and external pressures. It is almost as solid as a glass bottle or even stronger.

[0028] (3) Even if not recycled, the various components of the fully recyclable modular container of the present application can be naturally decomposed or degraded in the natural environment.

[0029] The fully recyclable modular container of this application is not only 100% naturally decomposable or biodegradable, but also 100% recyclable and reusable. It is an environmentally friendly and innovative product that best meets ESG requirements.

[0030] The details of other functions and embodiments of the present application are described below with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments recorded in this application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a structural diagram of an embodiment of the fully recyclable modular container of the present application;

[0033] Figure 2 yes Figure 1 An exploded view of the first embodiment of the container is shown;

[0034] Figure 3 yes Figure 1 An exploded view of the second embodiment of the container is shown;

[0035] Figure 4 This is a schematic diagram of a partial structural cross-section of the fully recyclable modular container of the present application, illustrating the continuous action of forming an inner liner by a blow molding process inside a blow mold.

[0036] Explanation of symbols

[0037] 10: Bottle cap 11: Internal thread

[0038] 20: Bottle shoulder 20L: Left bottle shoulder

[0039] 20R: Right bottle shoulder 21: Bottle mouth

[0040] 22: Connecting part 23: External thread

[0041] 24: Second thread 25: First latch

[0042] 26L: Left snap-in slot 26R: Right snap-in slot

[0043] 27R: Right card slot 27L: Left card slot

[0044] 30: Bottle body 31: First thread

[0045] 32: Third thread 33: Second engagement groove

[0046] 34: First engaging groove 40: Bottle bottom

[0047] 41: bottom surface 42: side wall

[0048] 43: Fourth thread 44: Second latch

[0049] 50: liner 51: opening

[0050] 52: Annular skirt M: Blow mold DETAILED DESCRIPTION

[0051] The positional relationships described in the following embodiments include up, down, left, and right. Unless otherwise specified, they are based on the directions of the components shown in the drawings.

[0052] First see Figure 1 , is a structural diagram of an embodiment of the fully recyclable modular container of the present application. An embodiment of the fully recyclable modular container of the present application comprises: a bottle cap 10, a bottle shoulder 20, a bottle body 30, a bottle bottom 40 and an inner liner 50 (see Figure 2 ).

[0053] A preferred embodiment of the method for manufacturing the fully recyclable modular container of the present application includes the following steps:

[0054] S1. Use spiral paper tube to make bottle body 30;

[0055] S2. Using biodegradable plastics in a blow mold M to produce a liner 50 by blow molding process (see Figure 4 ), an opening 51 is formed at the top of the inner container;

[0056] S3 using biodegradable plastics by injection molding technology to produce a bottle cap 10, a bottle shoulder 20 and a bottle bottom 40;

[0057] S4. Assemble the bottle shoulder 20, the bottle body 30 and the bottle bottom 40 into the outer shell structure of the container, and detachably assemble the inner liner 50 inside the outer shell structure.

[0058] In a preferred embodiment, the bottle cap 10, bottle shoulder 20, and bottle base 40 are made of polybutylene succinate (PBS) through injection molding technology. The spiral paper tube making up the bottle body 30 is made by winding waterproof paper with a polybutylene succinate (PBS) coating on the inside. The waterproof paper can be made of natural plant materials (such as pure pulp) and then coated with PBS on one side to achieve the goal of recyclability. Preferably, at least two layers of waterproof paper are used to make the spiral paper tube, and more preferably, a spiral paper tube with a three-layer staggered overlapping structure. The bottle body 30 made of the spiral paper tube has internal and external pressure resistance that exceeds that of plastic bottles and is almost as strong as or even stronger than a glass bottle.

[0059] The top of the bottle shoulder 20 has a bottle mouth 21 that can be connected to the bottle cap 10, and the bottle shoulder 20 extends toward the bottom end to have a connecting portion 22 that can be inserted into the top of the bottle body 30. The top of the bottle body 30 and the connecting portion 22 of the bottle shoulder 20 have a first snap-fit structure (see below for details), and the bottle shoulder 20 and the bottle body 30 are detachably combined together through the first snap-fit structure.

[0060] See also Figure 2 The bottle bottom 40 includes a bottom surface 41 and a side wall 42 surrounding the bottom surface 41. The side wall 42 can be inserted into the bottom end of the bottle body 30. The bottom end of the bottle body 30 and the side wall 42 have a second snap-fit structure (see below for details). The bottle body 30 and the bottle bottom 40 are detachably combined together through the second snap-fit structure. The bottle shoulder 20, the bottle body 30 and the bottle bottom 40 are combined into the outer shell structure of the container through the above-mentioned first snap-fit structure and the second snap-fit structure. Then, a biodegradable plastic is used to form an inner liner 50 inside the outer shell structure through a blow molding process, and an opening 51 is formed at the top of the inner liner 50. Liquid or objects can be injected into the container through this opening 51 for storage.

[0061] See also Figure 4 The inner liner 50 is made of a biodegradable plastic material. In a preferred embodiment, the inner liner 50 is made of any one of the bio-based polyester materials polyethylene furanoate (PEF) and polybutylene succinate (PBS). The inner liner 50 is blow-molded. The inner liner 50 is pre-molded in a blow mold M by a blow molding process. The shape of the mold cavity inside the blow mold M is consistent with the shell structure. Figure 4 As shown, during the blow molding process, the material gradually expands until it becomes an inner liner 50 that is consistent with the internal shape of the outer shell structure. The inner liner 50 can achieve gas and water barrier properties comparable to those of traditional plastic bottles. Since PBS material is used and the inner liner 50 is made by blow molding, the wall thickness of the inner liner 50 can be made thinner.

[0062] Preferably, the bottle cap 10 and the bottle shoulder 20 are detachably connected via a threaded structure. Figure 2 As shown, the bottle shoulder 20 has an external thread 23 near the bottle mouth 21, and the inner side of the bottle cap 10 has an internal thread 11. The bottle cap 10 can be screwed together with the external thread 23 of the bottle shoulder 20 via the internal thread 11. Preferably, the edge of the opening 21 at the top of the inner liner 50 has an annular skirt 52 extending outward in the radial direction. After the bottle cap 10 is connected to the bottle mouth 21, the annular skirt 52 is interposed between the bottle cap 10 and the bottle mouth 21, thereby forming a seal between the bottle cap 10 and the bottle mouth 21, and effectively preventing liquid leakage in the container.

[0063] See also Figure 2 , which shows a structural exploded view of the first embodiment of the fully recyclable modular container of the present application; in the first embodiment, the bottle shoulder 20, the bottle body 30 and the bottle bottom 40 are detachably combined to form the outer shell structure of the container through a threaded structure; preferably, the first snap-fitting structure includes: a first thread 31 arranged at the top end of the bottle body 30, and a second thread 24 arranged at the connecting portion 22 of the bottle shoulder 20, the first thread 31 and the second thread 24 can be screwed together, so that the bottle shoulder 20 and the bottle body 30 can be detachably combined; the second snap-fitting structure includes: a third thread 32 arranged at the bottom end of the bottle body 30, and a fourth thread 43 arranged on the side wall 42 of the bottle bottom 40, the third thread 32 and the fourth thread 43 can be screwed together, so that the bottle body 30 and the bottle bottom 40 can be detachably combined.

[0064] See also Figure 3, which shows a structural exploded view of the second embodiment of the fully recyclable modular container of the present application; in the second embodiment, the bottle shoulder 20, the bottle body 30 and the bottle bottom 40 are detachably combined into the outer shell structure of the container through a snap-fit structure and rotation; preferably, the first snap-fit structure includes: a first snap-fit groove 34 arranged at the top end of the bottle body 30, and a first snap-fit 25 arranged at the connecting portion 22 of the bottle shoulder 20, the first snap-fit groove 34 being able to rotatably engage with or disengage from the first snap-fit 25, so that the bottle shoulder 20 and the bottle body 30 can be detachably combined; the second snap-fit structure includes: a second snap-fit groove 33 arranged at the bottom end of the bottle body 30, and a second snap-fit 44 arranged on the side wall 42 of the bottle bottom 40, the second snap-fit groove 33 being able to rotatably engage with or disengage from the second snap-fit 44, so that the bottle body 30 and the bottle bottom 40 can be detachably combined.

[0065] See also Figure 2 and Figure 3 As a preferred embodiment of the fully recyclable combined container of the present application, the bottle shoulder 20 includes a left bottle shoulder 20L and a right bottle shoulder 20R that can be combined with each other. The left bottle shoulder 20L and the right bottle shoulder 20R can be manufactured separately by injection molding technology. The side wall edge of the left bottle shoulder 20L has a left engaging groove 26L extending toward the right bottle shoulder 20R, and the left engaging groove 26L can be engaged with a right engaging groove 27R corresponding to the side wall of the right bottle shoulder 20R. The side wall edge of the right bottle shoulder 20R has a right engaging groove 26R extending toward the left bottle shoulder 20L, and the right engaging groove 26R can be engaged with a left engaging groove 27L corresponding to the side wall of the left bottle shoulder 20L. This structure of the bottle shoulder 20 composed of the left bottle shoulder 20L and the right bottle shoulder 20R can be disassembled during the recycling operation, and then the inner liner 50 can be easily removed, thereby achieving the goal of complete disassembly and recycling of each component.

[0066] Through the above-mentioned embodiments, it can be understood that the fully recyclable modular container and the manufacturing method thereof of the present application, during the entire container manufacturing process, all components of the container are combined by means of a snap-fit structure, threads and rotation, without using any glue, and are easy to assemble. After recycling, they are easy to disassemble and then to be sorted for recycling and reuse. The single basic raw material used to make each component, such as pure pulp, pure PBS, and pure PEF, is completely free of other different raw materials or impurities. Even if it is not recycled, each component can naturally decompose or degrade in the natural environment.

[0067] The fully recyclable modular container of this application is characterized by not only being 100% naturally decomposable or biodegradable, but also being 100% recyclable and reusable. It is the most environmentally friendly and innovative product that meets ESG requirements!

[0068] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present application, and do not impose any form of limitation on the implementation methods of the technology of the present application. Any person skilled in the art may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present application, but they should still be regarded as technologies or embodiments that are essentially the same as those of the present application.

Claims

1. A fully recyclable modular container, characterized in that: The combined container comprises: a bottle cap, a bottle shoulder, a bottle body, a bottle bottom and an inner liner; the bottle cap, the bottle shoulder and the bottle bottom are made of biodegradable plastic by injection molding technology; the inner liner is made of biodegradable plastic by blow molding process inside a blow molding mold, and the top of the inner liner is formed with an opening; the top of the bottle shoulder has a bottle mouth that can be connected to the bottle cap, the bottle body is made of a spiral paper tube, the top of the bottle shoulder has a bottle mouth that can be connected to the bottle cap, and the bottle shoulder extends towards the bottom end to be inserted into the bottle body. The bottle bottom comprises a bottom surface and a side wall surrounding the bottom surface, the side wall can be inserted into the bottom end of the bottle body, the bottom end of the bottle body and the side wall have a second snap-fit structure, the bottle body and the bottle bottom can be detachably combined together through the second snap-fit structure, the bottle shoulder, the bottle body and the bottle bottom are combined to form the outer shell structure of the container, and the liner can be detachably assembled inside the outer shell structure.

2. The fully recyclable modular container according to claim 1, characterized in that: The bottle shoulder has an external thread near the bottle mouth, and the inner side of the bottle cap has an internal thread. The bottle cap can be screwed together with the external thread of the bottle shoulder through the internal thread.

3. The fully recyclable modular container according to claim 1, characterized in that: The first engaging structure includes: a first thread arranged at the top end of the bottle body, and a second thread arranged at the connecting portion of the bottle shoulder, and the first thread and the second thread can be screwed together; the second engaging structure includes: a third thread arranged at the bottom end of the bottle body, and a fourth thread arranged at the side wall of the bottle bottom, and the third thread and the fourth thread can be screwed together.

4. The fully recyclable modular container according to claim 1, characterized in that: The first engaging structure includes: a first engaging groove configured at the top end of the bottle body, and a first latch configured at the connecting portion of the bottle shoulder, wherein the first engaging groove can be rotatably engaged with or separated from the first latch; the second engaging structure includes: a second engaging groove configured at the bottom end of the bottle body, and a second latch configured at the side wall of the bottle bottom, wherein the second engaging groove can be rotatably engaged with or separated from the second latch.

5. The fully recyclable modular container according to claim 1, characterized in that: The bottle cap, the bottle shoulder and the bottle bottom are made of polybutylene succinate through injection molding technology.

6. The fully recyclable modular container according to claim 1, characterized in that: The spiral paper tube used to make the bottle body is made by winding waterproof paper with a polybutylene succinate coating on the inner side.

7. The fully recyclable modular container according to claim 1, characterized in that: The biodegradable plastic used to make the inner liner is selected from the group consisting of bio-based polyester materials polyethylene furanoate and polybutylene succinate.

8. The fully recyclable modular container according to claim 1, characterized in that: The opening edge of the top end of the inner container is provided with an annular skirt extending outwardly along the radial direction. After the bottle cap is connected to the bottle mouth, the annular skirt is located between the bottle cap and the bottle mouth.

9. The fully recyclable modular container according to claim 1, characterized in that: The bottle shoulder includes a left bottle shoulder and a right bottle shoulder that can be combined with each other. The side wall edge of the left bottle shoulder has a left engaging groove extending toward the right bottle shoulder, and the left engaging groove can be engaged with a right engaging groove corresponding to the side wall of the right bottle shoulder. The side wall edge of the right bottle shoulder has a right engaging groove extending toward the left bottle shoulder, and the right engaging groove can be engaged with a left engaging groove corresponding to the side wall of the left bottle shoulder.

10. A method for manufacturing a fully recyclable modular container, characterized in that: The manufacturing method comprises the following steps: Use spiral paper tubes to make a bottle body; A liner is made of biodegradable plastic in a blow molding mold by a blow molding process, wherein an opening is formed at the top of the liner; A bottle cap, a bottle shoulder, and a bottle bottom are made of biodegradable plastic by injection molding technology. The top of the bottle shoulder has a bottle mouth that can be connected to the bottle cap. The bottle shoulder extends toward the bottom end to have a connecting portion that can be inserted into the top of the bottle body. The top of the bottle body and the connecting portion of the bottle shoulder have a first snap-fit structure, and the bottle shoulder and the bottle body can be detachably connected together through the first snap-fit structure. The bottle bottom includes a bottom surface and a side wall surrounding the bottom surface, and the side wall can be inserted into the bottom end of the bottle body. The bottom end of the bottle body and the side wall have a second snap-fit structure, and the bottle body and the bottle bottom can be detachably connected together through the second snap-fit structure. The bottle shoulder, the bottle body and the bottle bottom are combined into the outer shell structure of the container, and the inner liner is detachably assembled inside the outer shell structure.

11. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: The bottle shoulder has an external thread near the bottle mouth, and the inner side of the bottle cap has an internal thread. The bottle cap can be screwed together with the external thread of the bottle shoulder through the internal thread.

12. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: The first engaging structure includes: a first thread arranged at the top end of the bottle body, and a second thread arranged at the connecting portion of the bottle shoulder, and the first thread and the second thread can be screwed together; the second engaging structure includes: a third thread arranged at the bottom end of the bottle body, and a fourth thread arranged at the side wall of the bottle bottom, and the third thread and the fourth thread can be screwed together.

13. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: The first engaging structure includes: a first engaging groove configured at the top end of the bottle body, and a first latch configured at the connecting portion of the bottle shoulder, wherein the first engaging groove can be rotatably engaged with or separated from the first latch; the second engaging structure includes: a second engaging groove configured at the bottom end of the bottle body, and a second latch configured at the side wall of the bottle bottom, wherein the second engaging groove can be rotatably engaged with or separated from the second latch.

14. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: The bottle cap, the bottle shoulder and the bottle bottom are made of polybutylene succinate through injection molding technology.

15. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: The spiral paper tube used to make the bottle body is made by winding waterproof paper with a polybutylene succinate coating on the inner side.

16. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: The biodegradable plastic used to make the inner liner is selected from the group consisting of bio-based polyester materials polyethylene furanoate and polybutylene succinate.

17. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: The method further comprises: making an annular skirt at the opening edge of the top end of the inner liner, and after the bottle cap is connected to the bottle mouth, the annular skirt is located between the bottle cap and the bottle mouth.

18. The method for manufacturing a fully recyclable modular container according to claim 10, characterized in that: A left shoulder and a right shoulder are manufactured to form the bottle shoulder. The side wall edge of the left shoulder has a left engaging groove extending toward the right shoulder, and the left engaging groove can be engaged with a right engaging groove corresponding to the side wall of the right shoulder. The side wall edge of the right shoulder has a right engaging groove extending toward the left shoulder, and the right engaging groove can be engaged with a left engaging groove corresponding to the side wall of the left shoulder.

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