CN111846582A - Paper-based composite structure for beverage bottles - Google Patents

Abstract

The invention provides a paper-based composite structure of a beverage bottle, which comprises: the bottle comprises a bottle mouth, a bottle cap used for sealing the bottle mouth, a bottle body and a bottle bottom used for sealing the bottom end of the bottle body; the bottle mouth comprises a tubular body and an upper section of bottle body, the tubular body is made of biodegradable plastic, and the upper section of bottle body is made of stone paper; the top end of the bottle body is tightly connected with the upper section of the bottle body, and the bottle body is of a tubular spiral structure made of stone paper-based composite paper, so that the structural strength can be improved; the bottle body is completely made of biodegradable environment-friendly materials, the bottle body is of a tubular spiral structure which is made of stone paper-based composite paper with at least three layers of structures, sufficient structural strength is guaranteed, a necking part can be formed on the bottle body or a required modeling design can be generated by combining the characteristics of water resistance, plasticity and the like of the stone paper, and the bottle body has the advantages of being easy to process and manufacture and capable of improving the visual aesthetic feeling of the bottle body.

Description

Paper-based composite structure for beverage bottles

technical field

The present invention relates to the structure of a beverage container, in particular to a paper-based composite structure of a beverage bottle.

Background technique

At present, the most widely used beverage containers on the market are mostly plastic bottles (or PET bottles). The raw materials for traditional plastic bottles are mainly polyethylene terephthalate (PET). and use PET bottles, but PET bottles cannot be degraded naturally, so how to deal with PET bottle garbage has become a major environmental protection issue faced by all countries.

In order to solve the environmental protection problems caused by plastic bottles, containers made of environmentally friendly materials that can be naturally degraded have been successively proposed and put into mass production applications.

In the "Paper Container" approved by Taiwan's New Patent Certificate No. TW M513853U, the proposed paper container uses paper produced from traditional pulp as the main raw material to make the so-called container. Although this paper container does not use plastic , but it requires the consumption of wood or similar plant fibers, which will also cause the consumption of forest resources and is not in line with the global environmental protection goal of reducing carbon dioxide.

In the published Chinese Invention Patent Application Publication No. CN 103625726 A, a "paper-plastic bottle body and its processing technology" is disclosed. The paper-plastic bottle body includes a bottle body and a plastic end located on the upper part of the bottle body. The bottle body includes a paper tube that opens upward, the plastic end includes a neck, and the neck extends downward to form a shoulder; the shoulder communicates with the interior of the neck, and the lower edge thereof is connected to the paper tube The opening is tightly engaged to close the inner cavity of the paper tube. Because the traditional wood pulp paper has no plasticity, this kind of paper-plastic bottle body inevitably still uses plastic to make the plastic end. In order to solve the technical problem that the paper bottle body cannot be waterproof The surface of the substrate needs a lamination operation to form a waterproof inner plastic layer and an outer plastic layer on the surface of the paper substrate. Basically, it is still difficult to maximize the effect of not using plastic.

The applicant of the present application proposed a "stone paper container structure" in Taiwan's new patent certificate No. TW M565711, which has been granted authorization, which is basically made of materials with at least three layers of stone paper. It is made of materials mixed with inorganic fillers (such as calcium carbonate CaCO3) and plastics. It does not use traditional wood pulp paper at all, which can reduce the consumption of tree resources in the traditional paper industry. The plastics contained in stone paper can be made of biodegradable organic plastics ( For example, aliphatic or semi-aromatic polyesters (such as PLA, PBS, PBAT, etc.) have the effect of being naturally degradable and can also be recycled and remade, which fully conforms to the concept of protecting the environment. Although this stone paper container structure is made of stone paper that conforms to the concept of environmental protection, the structural strength of pure stone paper cannot directly replace the technical problem of plastic beverage bottles. The above stone paper container is still mainly used to replace traditional paper cups. .

Based on the characteristics of stone paper that conforms to the concept of environmental protection, the inventor of this article, through years of practical experience and technology, proposes a paper-based composite structure for beverage bottles, which overcomes the technical problem that stone paper cannot directly replace plastic to make beverage bottles, and at the same time solves the traditional plastic Environmental issues caused by bottles and paper containers.

In the authorized Chinese utility model patent authorization announcement No. CN207210842U, a stone paper for making a container is proposed. The stone paper includes: a stone paper base paper layer, a printing coating and a coating layer; the printing coating is Coated on one side of the stone paper base paper layer, the coating layer is coated on the other side of the stone paper base paper layer; the hot melt temperature of the stone paper base paper layer is higher than the hot melt temperature of the coating layer; preferably The coating material of the coating layer is polylactic acid; the invention can realize the effective recycling and reuse of the container and reduce the use cost. The stone paper used for making the container proposed by the above-mentioned novel technology has only one-layer structure, so the structural strength of the made container is limited.

SUMMARY OF THE INVENTION

In order to overcome the technical problem that stone paper cannot directly replace plastics to make beverage bottles, and at the same time solve the environmental protection problems caused by traditional plastic bottles and paper containers, the present invention proposes a paper-based composite structure for beverage bottles, which is completely made of biodegradable The manufacture of environmentally friendly materials can solve the technical problem that stone paper is difficult to directly apply to the production of beverage containers, and at the same time ensure the structural strength required for the application of stone paper to manufacture beverage containers.

Based on solving the above-mentioned technical problems, a technical scheme of the paper-based composite structure of the beverage bottle of the present invention includes:

A bottle cap is a tubular structure whose one end is sealed and the other end is opened as a bottle cap opening, and the inner side wall surface of the bottle cap has screw teeth;

A bottle mouth, comprising a tubular body and an upper bottle body, the upper bottle body is made of stone paper, the two ends of the upper bottle body have a first opening and a second opening respectively, and the aperture of the first opening is smaller than the diameter of the second opening. Aperture, the first opening is tightly connected to the tubular body, the outer side of the tubular body has a ring-shaped rib protruding outward, and the outer side of the tubular body has a screw thread at a position above the rib, which can be butted and tightened with the bottle cap, There is a connecting surface around the first opening, and the rib of the tubular body can be tightly connected with the connecting surface;

A bottle body is made of at least three layers of stone-paper-based composite paper, the at least three-layer stone-paper-based composite paper at least includes a first layer of paper, a second layer of paper and a third layer of paper, and the stone-paper-based composite paper The paper is wound in a spiral winding manner, and the first layer of paper, the second layer of paper and the third layer of paper are bonded to each other in a staggered overlapping manner to form a tubular structure of at least three layers as the bottle body, The top of the bottle body is closely connected to the second opening of the upper part of the bottle body, the first layer of paper becomes the outermost layer of the bottle body, the second layer of paper becomes the middle layer of the bottle body, and the third layer of paper becomes the inner layer of the bottle body ;as well as

A bottle bottom, made of stone paper, is tightly connected to the bottom end of the bottle body and closes the opening of the bottom end of the bottle body.

The tubular body of the bottle cap and the bottle body is made of biodegradable plastic materials.

As a preferred structure of the bottle mouth, the rib is located at the bottom end of the tubular body, and the rib is tightly connected with the connecting surface by gluing or high-frequency welding process.

As another preferred structure of the bottle mouth, the bottle mouth further comprises a sealing ring and a locking member, the rib of the tubular body is arranged in the middle of the tubular body, and the outer side of the lower half of the tubular body has screw teeth, the said The locking piece is a ring-shaped member with threads on its inner diameter. After the lower half of the tubular body passes through the sealing ring and the first opening of the upper bottle body in sequence, it passes through the threads of the lower half of the tubular body and the lock. The fasteners are tightly connected together.

As a preferred structure of the bottle body, the first layer of paper and the third layer of paper are stone paper, and the second layer of paper is recycled stone paper or traditional wood pulp paper.

As another preferred structure of the bottle body, wherein the first layer of paper, the second layer of paper and the third layer of thread are stone paper.

As another preferred structure of the bottle body, the bottle body is made of four layers of stone paper-based composite paper, wherein the fourth layer is aluminum foil paper, and the aluminum foil paper is used as the inner side of the bottle body or the outer side.

As another preferred structure of the bottle body, the bottle body is made of five layers of stone paper-based composite paper, including: a first layer of paper, a second layer of paper, a third layer of paper, a fourth layer of paper and The fifth layer of paper; wherein the first layer of paper, the third layer of paper and the fifth layer of paper are stone paper, the second layer of paper and the fourth layer of paper can be recycled paper, and the recycled paper can be recycled stone paper or Traditional wooden paddle paper.

As another preferred structure of the bottle body, the bottle body is made of five layers of stone paper-based composite paper, including: a first layer of paper, a second layer of paper, a third layer of paper, a fourth layer of paper and The fifth layer of paper; wherein the first layer of paper, the third layer of paper and the fifth layer of paper are stone paper, the second layer of paper can be recycled paper, and the recycled paper can be recycled stone paper or traditional wood pulp paper , the fourth layer of paper is aluminum foil.

The bottle bottom comprises a bottom surface and a side wall surrounding the periphery of the bottom surface, and the side wall of the bottle bottom is tightly connected with the inner side wall of the bottle body.

The side wall of the bottle bottom is tightly connected to the inner side wall of the bottle body by gluing or high frequency welding process.

As another preferred structure of the bottle body, the bottle body further has a necking portion near the top.

As another preferred structure of the bottle body, the position of the lower half of the bottle body further has a shaped portion that protrudes outward or sinks inward.

The beneficial effect of the paper-based composite structure of the beverage bottle of the present invention is that it is completely made of biodegradable environmental protection materials, and the bottle body is a tubular spiral structure made of stone-paper-based composite paper, which ensures sufficient structure. The strength, combined with the waterproof and plastic properties of stone paper, can form a necked portion on the bottle body or produce a desired shape design, which has the beneficial effects of easy processing and manufacturing and can enhance the visual aesthetics of the bottle body.

The details of other functions and embodiments of the present invention are described below with the help of the drawings.

Description of drawings

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 accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only These are some embodiments described in this application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

1 is an exploded structural view of an embodiment of a paper-based composite structure for a beverage bottle of the present invention;

2 is a cross-sectional structural view of the paper-based composite structure of the beverage bottle shown in FIG. 1;

Fig. 3 is the partial structural schematic diagram of the paper-based composite structure of the beverage bottle of the present invention, and depicts the structure of at least three layers of stone-based composite paper used to make the bottle body;

Fig. 4 is the partial structural schematic diagram of the paper-based composite structure of the beverage bottle of the present invention, depicts the cross-sectional structure of the bottle body made of at least three layers of stone-paper-based composite paper;

5 is an exploded structural view of another embodiment of the paper-based composite structure of the beverage bottle of the present invention;

6 is a cross-sectional structural view of the paper-based composite structure of the beverage bottle shown in FIG. 5;

7 is a cross-sectional structural view of another embodiment of the paper-based composite structure of the beverage bottle of the present invention;

FIG. 8 is a structural appearance view of an embodiment of the paper-based composite structure of the beverage bottle of the present invention;

FIG. 9 is a structural appearance view of another embodiment of the paper-based composite structure of the beverage bottle of the present invention;

Fig. 10 is the partial structural schematic diagram of the paper-based composite structure of the beverage bottle of the present invention, depicting the cross-sectional structure of the bottle body made of four-layer stone-paper-based composite paper;

Fig. 11 and Fig. 12 are partial structural diagrams of the paper-based composite structure of the beverage bottle of the present invention, showing the cross-sectional structure of the bottle body made of five layers of stone-paper-based composite paper.

Symbol Description

10 Caps 11 Threads

20 Bottle spout 21 Tubular body

22 Upper bottle body 221 The first opening

222 Second opening 223 Connection surface

23, 23A Rib 24, 27 Thread

25 Sealing ring 26 Locking piece

30 Body 32 Neck

33 Shape Department 40 Bottle Bottom

41 Bottom surface 42 Side wall

50 First ply 50A First surface of first ply

50B Second surface of the first layer of paper 60 Second layer of paper

60A First surface of the second layer of paper 60B Second surface of the second layer of paper

70 Third ply 70A First surface of third ply

80 Fourth layer of paper 90 Fifth layer of paper

L Long Edge P Stone Paper Composite Paper

S short side

Detailed ways

The positional relationships described in the following embodiments, including: up, down, left and right, are based on the directions shown by the components in the drawings unless otherwise specified.

Referring first to Figures 1 and 2, it is an exploded structural view and a cross-sectional structural view of an embodiment of the paper-based composite structure of the beverage bottle of the present invention.

A preferred embodiment of the paper-based composite structure of the beverage bottle of the present invention includes: a bottle cap 10 , a bottle mouth 20 , a bottle body 30 and a bottle bottom 40 .

The bottle cap 10 is basically a screw cap, and the bottle cap 10 is a tubular structure with one end sealed and the other end open as the bottle cap opening. The inner wall surface of the bottle cap 10 has screw teeth 11. A preferred embodiment is to manufacture from a biodegradable plastic material such as, but not limited to, PLA.

The bottle mouth 20 includes a tubular body 21 and an upper bottle body 22. Both ends of the upper bottle body 22 respectively have a first opening 221 and a second opening 222. The preferred structure of the upper bottle body 22 is a conical tubular (or (called funnel shape), or a slightly flat dish shape, wherein the aperture of the first opening 221 is smaller than the aperture of the second opening 222, the upper bottle body 22 is made of stone paper, and the plasticity of the stone paper is used to heat the molding process. The first opening 221 is tightly connected to the tubular body 21, and the preferred embodiment of the tubular body 21 is made of biodegradable plastic materials (such as but not limited to PLA). The outer side of the bottom end has an annular rib 23 protruding outward, and the outer side of the tubular body 21 has a screw thread 24 at a position above the rib 23, which can be connected to the bottle cap 10 for butt tightening. The first opening 221 of the upper bottle body 22 There is a connecting surface 223 around it, and the rib 23 of the tubular body 21 can be closely connected with the connecting surface 223. For example, using glue or high-frequency welding process can achieve the effect of tight connection, thereby preventing the leakage of beverages or liquids. effect (see Figure 2).

Please refer to FIG. 5 and FIG. 6 , as another preferred embodiment of the bottle mouth 20, it includes a tubular body 21, a sealing ring 25, a locking member 26 and an upper bottle body 22, and the aforementioned FIGS. 1 and 2 The difference between the illustrated embodiments is that the rib 23A of the embodiment illustrated in FIG. 3 is provided at the middle position of the tubular body 21 , the outer side of the lower half of the tubular body 21 has screw teeth 27 , and the locking member 26 is basically a An annular member with threads on its inner diameter, in other words, a preferred embodiment of the locking member 26 is a nut, and the lower half of the tubular body 21 passes through the sealing ring 25 and the first opening of the upper bottle body 22 in sequence After 221, the screw thread 27 of the lower half of the tubular body 21 and the locking member 26 are tightly connected together (see FIG. 6), thereby providing a bottle mouth 20 with excellent structural strength, while ensuring the tubular body 21 The joint with the first opening 221 of the upper bottle body 22 has the effect of sealing and preventing leakage.

The bottle body 30 is basically a tubular spiral structure made of stone-paper-based composite paper P (see FIGS. 3 and 4 ), which ensures sufficient structural strength, and the top of the bottle body 30 is closely connected to the bottle mouth 20 The second opening 222 of the upper portion of the bottle body 22 can be tightly connected by, for example, gluing or a high-frequency welding process, thereby preventing the leakage of beverages or liquids.

The bottle bottom 40 is made of stone paper, and the bottle bottom 40 is tightly connected to the bottom end of the bottle body 30 and closes the opening of the bottom end of the bottle body 30; a preferred embodiment of the bottle bottom 40 is a cup made of stone paper. Structure, the bottle bottom 40 includes a bottom surface 41 and a side wall 42 surrounding the periphery of the bottom surface 41. The side wall 42 of the bottle bottom 40 is tightly connected to the inner side wall of the bottle body 30, for example, adhesive or high frequency welding process can be used. To achieve the effect of tight connection, and then achieve the effect of preventing the leakage of beverages or liquids.

A preferred embodiment of the bottle body 30 is a tubular spiral structure made of stone-paper-based composite paper P having at least three-layer structure, a preferred embodiment of the stone-paper-based composite paper P having at least three-layer structure As shown in FIG. 3 , it includes at least: a first layer of paper 50 , a second layer of paper 60 and a third layer of paper 70 , wherein the raw materials of the first layer of paper 50 , the second layer of paper 60 and the third layer of paper 70 are all Long strips of paper, the lengths of the short sides S of these long strips are the same, and the lengths of the long sides L of these long strips are not limited but at least should be enough to be wound into a bottle body; first Ply 50, second ply 60, and third ply 70 all have opposing first and second surfaces (for ease of illustration, the letter A for the first surface and the letter B for the first surface are followed by the letter A for ease of illustration). Two surfaces, for example: 50A represents the first surface of the first layer of paper 50, 60B represents the second surface of the second layer of paper 60, and so on), the first layer of paper 50, the second layer of paper 60 and the third layer of paper The long sides L of 70 are stacked on each other in a shingled manner (see Figure 3), and are bonded to each other with a portion occupying 1/2 the width of the short side. The long sides of the first layer of paper 50 , the second layer of paper 60 and the third layer of paper 70 are stacked on each other in a shingled manner, so that the second surface 50B of the first layer of paper 50 occupies 1/2 of the first layer of paper 50 The second half of the short side width is pasted on the first surface 60A of the second layer of paper 60 and occupies the first half of the short side width of the second layer of paper 60, and the second surface 60B of the second layer of paper 60 occupies the second half of the short side width. The second half of the 1/2 short side width of the layer paper 60 is pasted on the first surface 70A of the third layer paper 70 and occupies the first half of the 1/2 short side width of the third layer paper 70 .

A preferred embodiment of the stone-paper-based composite paper P with at least three-layer structure, wherein the first layer of paper 50 and the third layer of paper 70 are stone paper, and the second layer of paper 60 can be recycled paper. The recycled paper can be recycled stone paper or traditional wood pulp paper, especially using traditional wood pulp paper as the second layer of paper 60 can further provide better support and ensure sufficient structural strength; Another preferred embodiment of the stone-paper-based composite paper with at least three-layer structure, wherein the first layer of paper 50, the second layer of paper 60 and the third layer of paper 70 are stone paper (including newly manufactured stone paper or recycled stone paper) Paper).

The stone-paper-based composite paper P is wound in a spiral winding manner, and the first layer of paper 50, the second layer of paper 60 and the third layer of paper 70 are bonded to each other in a staggered overlapping manner into a tubular shape of at least three layers. Structure As the bottle body 30, the top of the bottle body 30 is closely connected to the second opening 222 of the upper bottle body 22 of the bottle mouth 20, wherein the first layer of paper 50 becomes the outermost layer of the bottle body 30 and the second layer of paper 60 It becomes the middle layer of the bottle body 30 , and the third layer of paper 70 becomes the inner layer of the bottle body 30 . Referring to FIG. 4 , the winding method of the stone-paper-based composite paper P is to start from the end point of the first round of the stone-paper-based composite paper P winding and the subsequent winding parts, and the first layer of paper 50 is wound. The second surface 50B occupies the first half of the width of the first layer of paper 50 and the first surface 60A of the second layer of paper 60 occupies the second half of the width of the short side of the second layer of paper 60. The second surface 60B of the second layer of paper 60 occupies the first half of the width of the short side of the second layer of paper 60 , and the first surface 70A of the third layer of paper 70 occupies 1/2 of the short side of the third layer of paper 70 . The second half of the width. The bottle body 30 with at least three-layer structure made by spiral winding and staggered overlapping has no gaps, and no leakage occurs due to the waterproof property of stone paper, and the bottle body 30 with at least three-layer structure can also Ensuring sufficient structural strength.

Although the above embodiment discloses the stone-paper-based composite paper P with a three-layer structure, it is not limited to three layers. Similarly, the paper-based materials of the fourth and more layers can be used in the same way. The bottle body 30 is made of stone-paper-based composite paper P, and the paper-based material includes newly manufactured stone paper, recycled stone paper or traditional wood pulp paper. The cross-sectional structure of the bottle body 30 made of the stone-paper-based composite paper P of the multilayer structure is disclosed below in conjunction with the illustrative drawings.

FIG. 7 shows a stone-paper-based composite paper P with a 4-layer structure, including: a first layer of paper 50 , a second layer of paper 60 , a third layer of paper 70 and a fourth layer of paper 80 , wherein the fourth layer of paper 80 It is aluminum foil paper as the inner side of the bottle body 30, which can provide the function of blocking ultraviolet rays, wherein the first layer of paper 50 and the third layer of paper 70 are stone paper, and the second layer of paper 60 can be recycled stone paper or traditional wood pulp. Paper. FIG. 10 shows another stone-paper-based composite paper P that also has a 4-layer structure, including: a first layer of paper 50, a second layer of paper 60, a third layer of paper 70 and a fourth layer of paper 80, and the The difference is that the fourth layer of paper 80 is aluminum foil as the outer side of the bottle body 30, which can provide the function of blocking ultraviolet rays.

11 shows a stone-paper-based composite paper P with a 5-layer structure, including: a first layer of paper 50, a second layer of paper 60, a third layer of paper 70, a fourth layer of paper 80, and a fifth layer of paper 90; This is a thickened and reinforced form based on the stone-paper-based composite paper P of the aforementioned three-layer structure, wherein the first layer of paper 50, the third layer of paper 70 and the fifth layer of paper 90 are stone paper, and the second layer of paper 60 And the fourth layer of paper 80 can be recycled paper, and the recycled paper can be recycled stone paper or traditional wood pulp paper.

FIG. 12 shows another stone-paper-based composite paper P with a 5-layer structure, including: a first layer of paper 50 , a second layer of paper 60 , a third layer of paper 70 , a fourth layer of paper 80 and a fifth layer of paper 90 ; Wherein the first layer of paper 50, the third layer of paper 70 and the fifth layer of paper 90 are stone paper, the second layer of paper 60 can be recycled paper, and the recycled paper can be recycled stone paper or traditional wood pulp paper , the fourth layer of paper 80 is aluminum foil.

Since the stone paper contains thermoplastics/resins and is waterproof, the process of using the stone-paper-based composite paper P to roll the bottle body 30 can achieve the effect of bonding and waterproofing the multiple layers of paper through high-frequency thermal melting or rolling heating. ; In other preferred embodiments, adhesive films can be coated on both sides of the aforementioned stone paper, and the mutual bonding effect of the multi-layer paper can be further enhanced by high-frequency thermal melting or rolling heating.

As a preferred embodiment of the paper-based composite structure of the beverage bottle of the present invention, the bottle body 30 further has a necking portion 32 at a position near the top (see FIG. 8 ), which can improve the structural strength of the bottle body 30 and is convenient for users Holding, based on the good plasticity of stone paper, the necked portion 32 can be formed by a heated rolling process and then cooled to fix its shape; in other preferred embodiments, the lower part of the bottle body 30 The position of the half section further has a shape portion 33 that protrudes outward or sinks inward (see FIG. 9 ), such as a ring-shaped rib or a ring-shaped depression, which can enhance the visual beauty of the bottle body 30 and produce the desired shape design.

The paper-based composite structure of the beverage bottle of the present invention is completely made of biodegradable environmental protection materials, and the bottle body is a tubular spiral structure made of stone-paper-based composite paper, which ensures sufficient structural strength and combines with stone The properties of paper, such as water resistance and plasticity, can form a necked portion on the bottle body or produce a desired shape design, which has the beneficial effects of being easy to process and manufacture and improving the visual aesthetics of the bottle body.

The above-mentioned embodiments and/or implementations are only used to illustrate the preferred embodiments and/or implementations for realizing the technology of the present invention, and are not intended to limit the implementation of the technology of the present invention in any form. Personnel, without departing from the scope of the technical means disclosed in the content of the present invention, may make some changes or modifications to other equivalent embodiments, but they should still be regarded as substantially the same technology or embodiment of the present invention.

Claims (13)

1. a paper-based composite structure of a beverage bottle, characterized in that, comprising: A bottle cap is a tubular structure whose one end is sealed and the other end is open as a bottle cap opening, and the inner wall surface of the bottle cap is provided with screw teeth; A bottle mouth, comprising a tubular body and an upper bottle body, the upper bottle body is made of stone paper, two ends of the upper bottle body respectively have a first opening and a second opening, and the aperture of the first opening is smaller than the diameter of the first opening. The hole diameter of the second opening, the first opening is tightly connected to the tubular body, the outer side of the tubular body has an annular rib protruding outward, and the outer side of the tubular body has a screw thread at a position above the rib that can be combined with The bottle cap is butt-tightened, a connecting surface is provided around the first opening, and the rib of the tubular body can be tightly connected with the connecting surface; A bottle body is made of at least three layers of stone-paper-based composite paper, the at least three-layer stone-paper-based composite paper at least comprises a first layer of paper, a second layer of paper and a third layer of paper, and the stone-paper-based composite paper It is wound in a spiral winding manner, and the first layer of paper, the second layer of paper and the third layer of paper are bonded to each other in a staggered and overlapping manner to form an at least three-layer tubular structure as the bottle body, The top of the bottle body is closely connected to the second opening of the upper bottle body of the bottle mouth, the first layer of paper becomes the outermost layer of the bottle body, the second layer of paper becomes the middle layer of the bottle body, and the first layer of paper becomes the middle layer of the bottle body. The three layers of paper become the inner layer of the bottle; and A bottle bottom, made of stone paper, is tightly connected to the bottom end of the bottle body and closes the opening of the bottom end of the bottle body. 2 . The paper-based composite structure of a beverage bottle according to claim 1 , wherein the cap and the tubular body of the bottle body are made of biodegradable plastic materials. 3 . 3 . The paper-based composite structure for a beverage bottle according to claim 1 , wherein the rib is located at the bottom end of the tubular body, and the rib is tightly connected to the connecting surface by gluing or high-frequency welding process. 4 . . 4 . The paper-based composite structure for a beverage bottle as claimed in claim 1 , wherein the bottle mouth further comprises a sealing ring and a locking member, and the rib of the tubular body is disposed at the middle of the tubular body. 5 . , the outer side of the lower half of the tubular body is provided with screw teeth, the locking piece is a kind of annular member with threads on its inner diameter, and the lower half of the tubular body sequentially passes through the sealing ring and the upper part of the bottle body After the first opening, the screw thread of the lower half of the tubular body and the locking member are tightly connected together. 5 . The paper-based composite structure for beverage bottles according to claim 1 , wherein the first layer of paper and the third layer of paper are stone paper, and the second layer of paper is recycled stone paper or traditional wood. 6 . pulp paper. 6. The paper-based composite structure for a beverage bottle as claimed in claim 1, wherein the first layer of paper, the second layer of paper and the third layer of thread are stone paper. 7. The paper-based composite structure of a beverage bottle as claimed in claim 1, wherein the bottle body is made of four layers of the stone-paper-based composite paper, comprising: the first layer of paper, the second layer of paper paper, the third layer of paper and a fourth layer of paper, the fourth layer is aluminum foil paper, and the aluminum foil paper is used as the inner side or outer side of the bottle body. 8. The paper-based composite structure of a beverage bottle as claimed in claim 1, wherein the bottle body is made of five layers of the stone-paper-based composite paper, comprising: the first layer of paper, the second layer of paper paper, the third layer of paper, a fourth layer of paper and a fifth layer of paper; the first layer of paper, the third layer of paper and the fifth layer of paper are stone paper, the second layer of paper and the fourth layer of paper The layer paper is recycled paper, and the recycled paper is recycled stone paper or traditional wood pulp paper. 9 . The paper-based composite structure of a beverage bottle according to claim 1 , wherein the bottle body is made of the stone-paper-based composite paper with five layers, comprising: the first layer of paper, the second layer of paper, The third layer of paper, a fourth layer of paper and a fifth layer of paper; the first layer of paper, the third layer of paper and the fifth layer of paper are stone paper, the second layer of paper is recycled paper, the The recycled paper is recycled stone paper or traditional wood pulp paper, the fourth layer of paper is aluminum foil paper. 10 . The paper-based composite structure of a beverage bottle as claimed in claim 1 , wherein the bottle bottom comprises a bottom surface and a side wall surrounding the periphery of the bottom surface, and the side wall of the bottle bottom is tightly connected to the bottle. 11 . the inner wall of the body. 11 . The paper-based composite structure of a beverage bottle according to claim 10 , wherein the side wall of the bottle bottom is tightly connected to the inner side wall of the bottle body by gluing or a high frequency welding process. 12 . 12 . The paper-based composite structure of a beverage bottle according to claim 1 , wherein the bottle body further has a necking portion near the top. 13 . 13 . The paper-based composite structure of a beverage bottle according to claim 1 , wherein the lower half of the bottle body further has a shaped portion that protrudes outward or sinks inward. 14 .

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