Fully recoverable container and manufacturing method thereof

Abstract

SOLUTION: A fully recoverable container and a manufacturing method thereof are proposed. A structure of the container includes a cap 10, a shoulder 20, a body 30, a bottle bottom 40, and a liner 50. The cap, the shoulder, and the bottle bottom are manufactured using biodegradable plastic through an injection molding technique, and the body is manufactured using waterproof paper. The cap, the shoulder, the body, and the bottle bottom are assembled so that a housing structure of the container can be detachably attached. The liner 50 is molded inside the housing structure using biodegradable plastic by a blow molding method.EFFECT: All members of a fully recoverable container are made of biodegradable materials, and each part can be decomposed and separately recovered, fully satisfying the requirements for environmental protection and recovery.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a container structure and a manufacturing method thereof, and more particularly to a fully recyclable container and a manufacturing method thereof. [Background technology]

[0002] Currently, the most widely used beverage containers on the market are plastic bottles (also known as PET bottles). Conventional plastic bottles are primarily made from polyethylene terephthalate (PET), and large quantities of PET bottles are produced and used around the world. However, because PET bottles do not decompose naturally, how to deal with the problem of PET bottle waste has become an environmental protection challenge facing all countries today.

[0003] In order to solve the environmental problems caused by plastic bottles, containers made of naturally degradable, environmentally friendly materials have been proposed and mass-produced one after another. For example, some manufacturers in the United States, the United Kingdom, the Netherlands, Denmark, etc. have proposed using PET bottles made entirely of paper using one-piece molding technology. Although such PET bottles made entirely of paper using one-piece molding technology have the advantages of being easy and quick to manufacture, they lack structural strength and compressive strength, and therefore cannot be used as cider bottles or to hold other drinks or liquids that require pressure (such as sparkling water).

[0004] To solve the above problems, the inventor proposed a liquid container made entirely of natural plant materials, including a cap, upper body, body, and bottom, in an approved Republic of China patent (Certificate No. I766398). Such a liquid container made of all-natural plant materials has excellent structural strength and can better withstand radial / lateral pressure, achieving the goal of natural or biodegradation and solving the environmental protection problems caused by traditional plastic bottles.

[0005] Currently, in order to meet increasingly stringent environmental protection laws and industrial requirements, containers made from such natural materials (e.g., paper bottles) must meet several requirements, in order of priority: (1) each component must be recyclable, (2) they must be made from bio-based raw materials, and (3) they must be biodegradable.

[0006] The patented technology proposed by the inventor above, "liquid container made entirely from natural plant materials," is made from all-natural plant materials, but the three components, the upper body, the body, and the bottle bottom, are combined together and then connected using an adhesive method to form a container that can store liquid, making it difficult to disassemble the individual components and to achieve complete recovery. Summary of the Invention [Problem to be solved by the invention]

[0007] The present invention aims to solve the problems of conventional paper PET bottles, which are manufactured entirely using one-piece molding technology and lack structural strength and compressive strength, as well as the environmental protection issues associated with conventional plastic bottles and paper containers. Furthermore, the present invention aims to provide a container that is completely recyclable, made from bio-based raw materials, and biodegradable. [Means for solving the problem]

[0008] A preferred embodiment of the fully recyclable container of the present invention comprises a cap, a shoulder, a body, a bottle base, and a liner, the cap, shoulder, and bottle base being made of biodegradable plastic. The bottle is manufactured using injection molding technology using a biodegradable plastic, with the tip of the shoulder having a mouth that can be connected to the cap, the body being manufactured using a spiral paper tube, with the tip of the shoulder also having a mouth that can be connected to the cap, and a connecting portion extending from the shoulder toward the bottom end that can be inserted into the tip of the body, the connecting portion between the tip of the body and the shoulder having a first engagement structure, the shoulder and body being detachably connected together via the first engagement structure, the bottom having a bottom surface and a side wall surrounding the bottom surface, the side wall being insertable into the bottom end of the body, the bottom end of the body and the side wall having a second engagement structure, the body and bottom being detachably connected together via the second engagement structure, the shoulder, body and bottom being combined into a container housing structure, and the liner is molded inside the housing structure using a blow molding method using a biodegradable plastic, and an opening is formed at the tip of the liner.

[0009] The present invention further includes a method for making a fully recyclable container, manufacturing a body portion using a spiral paper tube; a step of manufacturing a cap, a shoulder, and a bottle bottom by injection molding using biodegradable plastic, wherein the tip of the shoulder has a mouth portion connectable to the cap, the shoulder has a connecting portion extending toward the bottom end that can be inserted into the tip of the body, the connecting portion between the tip of the body and the shoulder has a first engaging structure, the shoulder and the body are detachably joined together via the first engaging structure, the bottle bottom has a bottom surface and a side wall surrounding the bottom surface, the side wall can be inserted into the bottom end of the body, the bottom end of the body and the side wall have a second engaging structure, and the body and the bottle bottom are detachably joined together via the second engaging structure; combining the shoulder, body and base into a container housing structure; forming a liner made of a biodegradable plastic material within the housing structure of the container by a blow molding process.

[0010] Preferably, the shoulder has a male thread near the mouth, and the inside of the cap has a female thread, so that the cap can be integrally screwed onto the male thread of the shoulder via the female thread.

[0011] Preferably, the first engagement structure includes a first screw located at the tip of the body and a second screw located at the connecting portion of the shoulder, and the first and second screws can be threaded together; and the second engagement structure includes a third screw located at the bottom end of the body and a fourth screw located on the side wall of the bottle bottom, and the third and fourth screws can be threaded together.

[0012] Preferably, the first engagement structure includes a first engagement groove located at the tip of the body and protruding radially, and a first locking portion located at the connecting portion of the shoulder, the first engagement groove rotatably engaging with or disengaging from the first locking portion, and the second engagement structure includes a second engagement groove located at the bottom end of the body and protruding radially, and a second locking portion located on the side wall of the bottle bottom, the second engagement groove rotatably engaging with or disengaging from the second locking portion.

[0013] Preferably, the cap, shoulder and base are manufactured by injection molding techniques using polybutylene succinate (PBS).

[0014] Preferably, the spiral paper tube from which the body is made is made by wrapping waterproof paper with a polybutylene succinate (PBS) laminate on the inside.

[0015] Preferably, the biodegradable plastic for manufacturing the liner is selected from the group consisting of the biomass polyester materials polyethylene furanoate (PEF) and polybutylene succinate (PBS).

[0016] Preferably, the edge of the opening at the tip of the liner has an annular skirt extending radially outward, and after the cap is connected to the mouth, the annular skirt is interposed between the cap and the mouth.

[0017] Preferably, the shoulder portion includes a left shoulder portion and a right shoulder portion that can be coupled to each other, the side wall edge of the left shoulder portion having a left engagement groove that protrudes toward the right shoulder portion, the left engagement groove being connectable with a corresponding right locking groove in the side wall of the right shoulder portion, and the side wall edge of the right shoulder portion having a right engagement groove that protrudes toward the left shoulder portion, the right engagement groove being connectable with a corresponding left locking groove in the side wall of the left shoulder portion.

[0018] The advantages and effects of the fully recyclable container and its manufacturing method according to the present invention are as follows: (1) All components of the container are assembled using an interlocking structure, screwing, and rotating methods, without the use of a single drop of adhesive, making it easy to assemble, and after collection, it can be easily disassembled and further recycled for separate collection. (2) The liner can achieve gas barrier and moisture barrier properties comparable to those of conventional plastic bottles, and the body made of a spiral paper tube exceeds the internal and external pressure resistance of plastic bottles, making it almost as strong as a glass bottle, or even stronger. (3) Even if it is not collected, each component of the fully recyclable container according to the present invention can naturally decompose in the natural environment.

[0019] The fully recyclable container of the present invention is not only 100% biodegradable, but also 100% recyclable and reusable, making it an environmentally friendly innovative product that best meets ESG requirements. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a structural diagram of one embodiment of a fully retrievable container according to the present invention; [Figure 2] FIG. 2 is an exploded view of the structure of the first embodiment of the container shown in FIG. [Figure 3] FIG. 2 is an exploded view of the structure of a second embodiment of the container shown in FIG. [Figure 4] 1 is a cross-sectional schematic view of a portion of the structure of a fully retrievable container according to the present invention, showing a sequential operation of forming a liner within the housing structure of the container in a blow molding process. DETAILED DESCRIPTION OF THE INVENTION

[0021] First, please refer to Figure 1. Figure 1 is a structural diagram of one embodiment of a fully retrievable container according to the present invention. The structure of one embodiment of a fully retrievable container according to the present invention includes a cap 10, a shoulder 20, a body 30, a bottle bottom 40, and a liner 50 (see Figure 2).

[0022] A preferred embodiment of the method for manufacturing a fully recoverable container according to the present invention comprises: Step S1 of manufacturing a body portion 30 using a spiral paper tube; Step S2: manufacturing the cap 10, the shoulder 20 and the bottle bottom 40 using biodegradable plastic by injection molding technology; Step S3: combining the shoulder 20, the body 30, and the bottom 40 to form a container housing structure; and step S4 of forming a liner 50 within the housing structure of the container by a blow molding process.

[0023] In a preferred embodiment, the cap 10, shoulder 20, and bottle bottom 40 are manufactured using polybutylene succinate (PBS) by injection molding, and the spiral cardboard tube used to manufacture the bottle body 30 is manufactured by wrapping waterproof paper with a polybutylene succinate (PBS) laminate on the inside. The waterproof paper is manufactured using natural plant materials (e.g., pure pulp) and is further manufactured with a PBS laminate on one side to achieve the goal of recyclability. Preferably, the spiral cardboard tube is manufactured by wrapping at least two layers of waterproof paper, and more preferably, the spiral cardboard tube has a three-layer alternating laminate structure. The body 30 manufactured from the spiral cardboard tube has internal and external pressure resistance that exceeds that of plastic bottles and is almost as strong as a glass bottle, or even stronger.

[0024] The tip of the shoulder portion 20 has an opening 21 that can be connected to the cap 10, and a connecting portion 22 that can be inserted into the tip of the body portion 30 extends from the shoulder portion 20 toward the bottom end, and the tip of the body portion 30 and the connecting portion 22 of the shoulder portion 20 have a first engagement structure (described in detail below), and the shoulder portion 20 and the body portion 30 are detachably connected together via the first engagement structure.

[0025] Referring to FIG. 2, the bottle bottom 40 includes a bottom surface 41 and a side wall 42 surrounding the bottom surface 41, the side wall 42 being insertable into the bottom end of the body 30, the bottom end of the body 30 and the side wall 42 having a second engagement structure (described in detail below), the body 30 and the bottle bottom 40 being detachably coupled together via the second engagement structure, the shoulder 20, the body 30 and the bottle bottom 40 being combined into a container housing structure via the above-mentioned first and second engagement structures, and further, a liner 50 is molded inside the housing structure by blow molding using biodegradable plastic, and an opening 51 is formed at the tip of the liner 50, through which liquid or an article can be poured into the container for storage.

[0026] Referring to FIG. 4, the liner 50 is made of a biodegradable plastic material. In a preferred embodiment, the liner 50 is made using either the biomass polyester material polyethylene 2,5-furanoate (PEF) or polybutylene succinate (PBS). The liner 50 is blow-molded. During the blow-molding process, the material gradually expands until it tightly contacts the inner wall of the housing structure, firmly adhering to the inside of the housing structure without the need for any adhesive, allowing for integral molding. Meanwhile, the liner 50 can achieve gas barrier properties and moisture barrier properties comparable to those of conventional plastic bottles. Because the liner 50 is made of a PBS material and by blow-molding, the wall thickness of the liner 50 can be made thinner.

[0027] Preferably, cap 10 and shoulder 20 are detachably connected via a threaded structure. In a preferred embodiment, as shown in Figure 2, shoulder 20 has an external thread 23 near mouth 21, and the inside of cap 10 has an internal thread 11 that can be threaded integrally with external thread 23 of shoulder 20. Preferably, the edge of opening 21 at the tip of liner 50 has an annular skirt 52 extending radially outward. After cap 10 is connected to mouth 21, annular skirt 52 is interposed between cap 10 and mouth 21 to form a seal between cap 10 and mouth 21 and effectively prevent leakage of liquid from the container.

[0028] 2, an exploded view of the structure of a first embodiment of a fully retrievable container according to the present invention is shown. In the first embodiment, the shoulder 20, the body 30, and the bottom 40 are detachably coupled to the housing structure of the container via a threaded structure. Preferably, the first coupling structure includes a first thread 31 disposed at the tip of the body 30 and a second thread 24 disposed at the connecting portion 22 of the shoulder 20. The first thread 31 and the second thread 24 can be threaded together, thereby detachably coupling the shoulder 20 and the body 30. The second coupling structure includes a third thread 32 disposed at the bottom end of the body 30 and a fourth thread 43 disposed at the side wall 42 of the bottom 40. The third thread 32 and the fourth thread 43 can be threaded together, thereby detachably coupling the body 30 and the bottom 40.

[0029] 3 shows an exploded view of the structure of a second embodiment of a fully recyclable container according to the present invention. In this second embodiment, the shoulder 20, body 30, and bottom 40 are removably assembled to form a container housing structure by an engaging structure and a rotational manner. Preferably, the first engaging structure includes a first engaging groove 34 located at the front end of the body 30 and a first locking portion 25 located at the connecting portion 22 of the shoulder 20. The first engaging groove 34 and the first locking portion 25 are rotatably engaged with or disengaged from each other, thereby allowing the shoulder 20 and body 30 to be removably assembled. The second engaging structure includes a second engaging groove 33 located at the bottom end of the body 30 and a second locking portion 44 located at the side wall 42 of the bottom 40. The second engaging groove 33 and the second locking portion 44 are rotatably engaged with or disengaged from each other, thereby allowing the body 30 and bottom 40 to be removably assembled.

[0030] 2 and 3, in a preferred embodiment of the fully recyclable container according to the present invention, the shoulder 20 includes a left shoulder 20L and a right shoulder 20R that can be connected to each other. The side wall edge of the left shoulder 20L has a left engagement groove 26L that protrudes toward the right shoulder 20R, and the left engagement groove 26L can be connected to a corresponding right engagement groove 27R in the side wall of the right shoulder 20R. The side wall edge of the right shoulder 20R has a right engagement groove 26R that protrudes toward the left shoulder 20L, and the right engagement groove 26R can be connected to a corresponding left engagement groove 27L in the side wall of the left shoulder 20L. This combined shoulder 20 structure, which combines the left shoulder 20L and the right shoulder 20R, allows the shoulder 20 to be disassembled during the recycling process, and the liner 50 to be easily removed, achieving the goal of complete disassembly and recycling of each component.

[0031] As can be seen from the above embodiments, in the fully recyclable container and manufacturing method thereof according to the present invention, all components of the container are assembled using interlocking structures, screw and rotating methods during the entire container manufacturing process, without using a single drop of adhesive, making it easy to assemble, and can be easily disassembled after collection, and further separated and collected for reuse. The single basic raw materials used to manufacture each component, such as pure pulp, pure PBS, and pure PEF, are not mixed with any other different raw materials or impurities, and even if they are not collected, each component can naturally decompose in the natural environment.

[0032] The advantages of the fully recyclable container of the present invention are that it is not only 100% biodegradable, but also 100% recyclable and reusable, making it an environmentally friendly innovative product that best meets ESG requirements.

[0033] The technical features, effects and exemplary embodiments of the present invention have been disclosed through the above examples, but they are not used to limit the present invention, and those skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention, and therefore the patent protection scope of the present invention should be governed by the claims of this application. [Explanation of symbols]

[0034] 10....Cap 11....Internal thread 20....Shoulder 20L....Left shoulder 20R....Right shoulder 21....mouth 22....Connection part 23....External thread 24....Second screw 25....First locking part 26L....Left engagement groove 26R....Right engagement groove 27R....Right locking groove 27L....Left locking groove 30....torso 31....First screw 32....Third screw 33....Second engagement groove 34....First engagement groove 40....Bottle bottom 41....Bottom 42....Side wall 43....Fourth screw 44....Second locking part 50....liner 51....Opening 52....Circular skirt

Claims

1. A fully recyclable container comprising a cap, a shoulder, a body, a bottle base, and a liner, wherein the cap, the shoulder, and the bottle base are made of biodegradable plastic. a container body made of a spiral paper tube and having a top end of the shoulder and a top end of the shoulder and a top end of the cap, the top end of the shoulder and a top end of the shoulder and a top end of the cap, the top end of the shoulder and the top end of the shoulder having a first engaging structure, the top end of the body ...

2. 2. A fully retrievable container as described in claim 1, wherein the shoulder has an external thread near the mouth, the inside of the cap has an internal thread, and the cap can be threaded integrally with the external thread of the shoulder via the internal thread.

3. 2. The fully retrievable container of claim 1, wherein the first engagement structure includes a first thread disposed at the tip of the body and a second thread disposed at the connecting portion of the shoulder, the first thread and the second thread being capable of threading together, and the second engagement structure includes a third thread disposed at the bottom end of the body and a fourth thread disposed at the side wall of the bottle bottom, the third thread and the fourth thread being capable of threading together.

4. 2. A fully retrievable container as described in claim 1, wherein the first engagement structure includes a first engagement groove located at the tip of the body portion and a first locking portion located at the connecting portion of the shoulder portion, the first engagement groove rotatably engaging with or disengaging from the first locking portion, and the second engagement structure includes a second engagement groove located at the bottom end of the body portion and a second locking portion located on the side wall of the bottle bottom, the second engagement groove rotatably engaging with or disengaging from the second locking portion.

5. 2. The fully recyclable container of claim 1, wherein the cap, the shoulder and the bottle base are manufactured by injection molding using polybutylene succinate (PBS).

6. 2. The fully recyclable container according to claim 1, wherein the spiral paper tube from which the body is made is wound with waterproof paper having a polybutylene succinate (PBS) laminate on the inside.

7. 2. The fully recoverable container of claim 1, wherein the biodegradable plastic for manufacturing the liner is selected from the group consisting of biomass polyester materials polyethylene furanoate (PEF) and polybutylene succinate (PBS).

8. 2. A fully retrievable container as described in claim 1, wherein the edge of the opening at the tip of the liner has an annular skirt extending radially outward, and after the cap is connected to the mouth, the annular skirt is interposed between the cap and the mouth.

9. 2. The fully retrievable container of claim 1, wherein the shoulder portion includes a left shoulder portion and a right shoulder portion that can be coupled to each other, the side wall edge of the left shoulder portion having a left engagement groove that protrudes toward the right shoulder portion, the left engagement groove being connectable with a corresponding right locking groove in the side wall of the right shoulder portion, and the side wall edge of the right shoulder portion having a right engagement groove that protrudes toward the left shoulder portion, the right engagement groove being connectable with a corresponding left locking groove in the side wall of the left shoulder portion.

10. A method for manufacturing a fully recyclable container, comprising: manufacturing a body portion using a spiral paper tube; a step of manufacturing a cap, a shoulder, and a bottle bottom using a biodegradable plastic by an injection molding technique, wherein a tip of the shoulder has a mouth portion connectable to the cap, the shoulder has a connecting portion extending toward the bottom end that can be inserted into the tip of the body, the connecting portion between the tip of the body and the shoulder has a first engaging structure, the shoulder and the body are detachably connected together via the first engaging structure, the bottle bottom has a bottom surface and a side wall surrounding the bottom surface, the side wall can be inserted into the bottom end of the body, the bottom end of the body and the side wall have a second engaging structure, the body and the bottle bottom are detachably connected together via the second engaging structure; combining the shoulder, the body and the bottle base to form a container housing structure; forming a liner made of a biodegradable plastic material inside the housing structure of the container by a blow molding process.

11. A method for manufacturing a completely recyclable container as described in claim 10, wherein the shoulder portion has an external thread near the mouth portion, the inside of the cap has an internal thread, and the cap can be integrally screwed onto the external thread of the shoulder via the internal thread.

12. A method for manufacturing a fully recyclable container as described in claim 10, wherein the first engagement structure includes a first thread disposed at the tip of the body portion and a second thread disposed at the connecting portion of the shoulder portion, and the first thread and the second thread can be threaded together, and the second engagement structure includes a third thread disposed at the bottom end of the body portion and a fourth thread disposed at the side wall of the bottle bottom, and the third thread and the fourth thread can be threaded together.

13. A method for manufacturing a fully recoverable container as described in claim 10, wherein the first engagement structure includes a first engagement groove arranged at the tip of the body portion and a first locking portion arranged at the connecting portion of the shoulder portion, the first engagement groove rotatably engaging with or disengaging from the first locking portion, and the second engagement structure includes a second engagement groove arranged at the bottom end of the body portion and a second locking portion arranged on the side wall of the bottle bottom, the second engagement groove rotatably engaging with or disengaging from the second locking portion.

14. 11. The method for manufacturing a fully recyclable container according to claim 10, wherein the cap, the shoulder and the bottle base are manufactured by injection molding using polybutylene succinate (PBS).

15. The method for manufacturing a completely recyclable container according to claim 10, wherein the spiral paper tube for manufacturing the body is manufactured by wrapping waterproof paper having polybutylene succinate (PBS) laminate on the inside.

16. 11. The method for manufacturing a completely recyclable container according to claim 10, wherein the biodegradable plastic used to manufacture the liner is selected from the group consisting of biomass polyester materials polyethylene furanoate (PEF) and polybutylene succinate (PBS).

17. 11. The method for manufacturing a fully recyclable container as described in claim 10, wherein the edge of the opening at the tip of the liner has an annular skirt extending radially outward, and after the cap is connected to the mouth, the annular skirt is interposed between the cap and the mouth.

18. The method for manufacturing a fully recyclable container as described in claim 10, wherein the shoulder portion includes a left shoulder portion and a right shoulder portion that can be connected to each other, the side wall edge of the left shoulder portion has a left engagement groove that protrudes toward the right shoulder portion, the left engagement groove being connectable with a corresponding right locking groove in the side wall of the right shoulder portion, and the side wall edge of the right shoulder portion has a right engagement groove that protrudes toward the left shoulder portion, the right engagement groove being connectable with a corresponding left locking groove in the side wall of the left shoulder portion.

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