TWM627714U - Waterproof paper bottle with film spray-coated on the inside - Google Patents

Abstract

A waterproof paper bottle with a film sprayed on the inside, comprising: a bottle cap, an upper bottle body and a lower bottle body; the bottle cap and the upper bottle body are made of a mixture mainly made of plant fibers, and are made by injection molding technology; A new type of post-coating method is proposed, which uses vegetable glue to coat the inner wall of the lower bottle body by spraying, and forms a covering layer on the inner wall of the lower bottle body, which can provide a completely airtight and waterproof inside the lower bottle body. function, and then connect the upper bottle body and the lower bottle body with biodegradable viscose to form a waterproof paper bottle with an inner sprayed film. The new waterproof paper bottle with inner side sprayed film has excellent structural strength, can better withstand radial/transverse pressure, and can be used to contain beverages or liquids with pressure, acidity, alkalinity or osmotic force.

Description

Waterproof paper bottle with film sprayed on the inside

The new model relates to the structure of a liquid container, in particular to a waterproof paper bottle with an inner sprayed film, which has excellent structural strength, can better withstand radial/transverse pressure, and can be used to accommodate pressure, acid-base or osmotic force. Beverages or liquids.

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. For example, some manufacturers in the United States, the United Kingdom, the Netherlands, Denmark and other countries have proposed paper bottles made of all-in-one molding technology. This kind of bottle completely made of paper material and made by one-piece molding technology has the advantages of convenient and fast manufacturing, but The structural strength and compressive strength are insufficient, and it is easy to break from the fragile structure, so it cannot be used as a soda bottle or hold beverages or liquids under pressure (such as sparkling water).

In the approved and announced ROC new type patent (certificate number M589181), a paper-based composite structure of a beverage bottle is disclosed, comprising: a bottle mouth, a bottle cap for closing the bottle mouth, a bottle body and a bottle body for closing the bottle body A bottle bottom at the bottom end; the bottle mouth includes a tubular body and an upper bottle body, the tubular body is made of biodegradable plastic; the top of the bottle body is tightly connected with the upper bottle body, and the bottle body is a tubular spiral structure made of a paper-based composite paper; The body is made of biodegradable plastic, and the upper body of the bottle mouth is made of any one of biodegradable plastic, virgin wood pulp paper, recycled wood pulp paper, bamboo fiber paper and straw pulp paper.

In the approved and announced ROC new type patent (certificate number M583428), a paper-based composite structure of a beverage bottle is disclosed, comprising: a bottle mouth, a bottle cap for closing the bottle mouth, a bottle body and a bottle body for closing the bottle body A bottle bottom at the bottom end; the bottle mouth includes a tubular body and an upper bottle body, the tubular body is made of biodegradable plastic, and the upper bottle body is made of stone paper.

The beverage bottle of the aforesaid known technology has the effect of being naturally degradable, but the bottle body used as a beverage bottle is a tubular spiral structure. The cross-section of the seam is prone to penetration problems; although other known paper materials on the market for the production of paper containers will first coat or form a waterproof coating on the surface of the paper material (such as PE coating) , and then use this kind of paper material with waterproof coating to make beverage containers or tableware, but these beverage containers or tableware, if they are used to hold beverages or liquids with pressure (such as sparkling water), are also unavoidable. Penetration occurs at the cross-section at the seam.

This new model proposes a waterproof paper bottle with a film sprayed on the inner side, which aims to solve the environmental protection problem of the conventional paper Baote bottles made of integral molding technology, and the traditional use of paper materials with PE coating to make beverage containers. The cross-section of the seam is infiltrated and cannot be used to accommodate beverages or liquids with pressure, acidity, or osmotic force.

The steps of an embodiment of the waterproof paper bottle of the novel inner side sprayed film include:

Using a mixture of plant fibers as the material, a bottle cap and an upper bottle body are made by injection molding technology. The top of the upper bottle body has a bottle mouth that can be connected with the bottle cap, and the upper bottle body extends toward the bottom end. There is a connecting segment;

Use a spiral paper tube with a multi-layer structure to make a bottle;

Using the composite paper with at least two-layer structure to make a bottle bottom by molding, the bottle bottom is a cup-shaped structure with an opening facing down, and the bottle bottom includes a bottom surface and a side wall surrounding the bottom surface;

The bottom of the bottle is inserted into the bottom end of the bottle body with the opening facing downward, and the side wall of the bottle body and the bottom of the bottle is bonded with biodegradable viscose to form a lower bottle body, and the bottle bottom is located at the bottom of the lower bottle body. The top of the lower bottle body has an opening;

Use vegetable glue to coat the inner wall of the lower bottle body and the inner surface of the bottle bottom by spraying to form a covering layer on the inner surface of the lower bottle body and the bottle bottom; and

The connecting section of the upper bottle body is inserted into the opening of the lower bottle body, and then glued and connected with the biodegradable viscose to form a waterproof paper bottle with an inner sprayed film.

The structure of an embodiment of the new waterproof paper bottle with inner spraying film includes: a bottle cap, an upper bottle body and a lower bottle body;

The top of the upper bottle body has a bottle mouth that can be connected with the bottle cap, and the upper bottle body has a connecting section extending toward the bottom end. Made by injection molding technology;

The lower bottle body comprises a bottle body and a bottle bottom, wherein the bottle body is made of a spiral paper tube with a multi-layer structure, and the bottle bottom is made of a composite paper with at least two-layer structure by molding, and the bottle The bottom is a cup-shaped structure with an opening facing down. The bottom of the bottle includes a bottom surface and a side wall surrounding the bottom surface. The bottom of the bottle is inserted into the bottom end of the bottle body with the opening facing down. The dissolving glue is bonded into the lower bottle body, the top of the lower bottle body has an opening, and a covering layer is formed on the inner wall of the lower bottle body and the inner surface of the bottom of the bottle, and the covering layer is made of vegetable glue. It is formed by spraying the inner wall of the lower bottle body and the inner surface of the bottle bottom. The connecting section of the upper bottle body is inserted into the opening of the lower bottle body and then glued together with the biodegradable viscose to form the inner surface of the sprayed film. Waterproof paper bottle.

As a preferred embodiment of the present invention, the plant fiber-based mixture comprises: natural plant fiber powder and plant-based binder.

As a preferred embodiment of the present invention, wherein the natural plant fiber powder is a plant fiber powder made of bamboo skin, and the plant-based binder includes any one of natural resin and pine juice.

As a preferred embodiment of the present invention, the biodegradable adhesive is polylactic acid (PLA) adhesive.

As a preferred embodiment of the present invention, the vegetable gum is made from pine sap, tapioca flour or bamboo flour.

As a preferred embodiment of the present invention, the vegetable gum is selected from the group consisting of tung oil, rubber and algin.

The advantages and effects of the new type are that it is all made of natural plant materials, has excellent structural strength, can better withstand radial/transverse pressure, and can be used to accommodate such as soft drinks, daily necessities or oils, which have pressure, acid and alkali. Sexual or osmotic beverages or liquids.

The new waterproof paper bottle with inner side sprayed film is different from the traditional paper material used for the production of paper containers, in that the surface of the paper material is first coated or a layer of waterproof coating (such as PE coating) is formed; Coating method, use vegetable glue to coat the lower section by spraying The inner wall of the bottle body forms a covering layer on the inner wall of the lower section of the bottle body and the inner surface of the bottle bottom, which can indeed fill the gaps and joints of each winding level of the spiral paper tube, and then inside the lower section of the bottle body. Provides complete airtight and waterproof functions, and has passed the test of oxygen permeability rate OTR and water vapor permeability rate WVTR, with 100% water vapor and 100% oxygen impermeability.

The specific embodiments of the present invention and its technical features and effects will be described below in conjunction with the drawings.

10: bottle cap

11: Internal thread

20: Upper bottle body

21: Bottle mouth

22: Connecting segment

23: External thread

24: Groove

30: bottle body

31: Inner flange

32: Chimeric groove

40: Bottom of the bottle

41: Underside

42: Sidewall

50: Lower bottle body

51: Overlay

52: Opening

60: Nozzle

61: Nozzle

Fig. 1 is a structural diagram of an embodiment of the waterproof paper bottle with the inner side sprayed with the film of the present invention.

FIG. 2 is an exploded view of the structure of the embodiment of FIG. 1 .

Figure 3 is a cross-sectional structural diagram of the lower bottle body.

Figures 4A and 4B illustrate the operation of using vegetable glue to coat the inner wall of the lower bottle body and the inner surface of the bottle bottom by spraying to form a covering layer on the inner wall of the lower bottle body and the inner surface of the bottle bottom Schematic.

Fig. 5 is a cross-sectional structural view of an embodiment of the waterproof paper bottle with a film sprayed on the inside of the present invention, wherein the bottle cap and the upper bottle body are shown in a separate relationship.

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. The directions mentioned therein (for example, up, down, left, right, front, and back) are displayed according to the drawings, and are used to illustrate the relative relationship (for example, positional relationship, connection relationship and action relationship).

First, please refer to Figure 1, Figure 2 and Figure 3, which are the inner sprayed film of the new type The structure diagram, the structure exploded view and the cross-sectional structure view of the middle and lower section bottle body 50 of an embodiment of the waterproof paper bottle. An example structure of the novel inner side sprayed film waterproof paper bottle includes: bottle cap 10 , upper bottle body 20 , and lower bottle body 50 , wherein the lower bottle body 50 is composed of bottle body 30 and bottle bottom 40 .

The top of the bottle body 20 of the upper section has a bottle mouth 21 that can be connected with the cap 10, and the bottle body 20 of the upper section extends toward the bottom end with a connecting section 22; wherein the bottle cap 10 and the bottle body 20 of the upper section use a mixture mainly composed of plant fibers. The material is made by injection molding technology, and the plant fiber-based mixture basically includes: natural plant fiber powder and plant-based binder; the preferred embodiment of the natural plant fiber powder is made of bamboo skin Plant fiber powder, the plant-based binder includes any one of natural resin and pine juice, and it is completely natural and can be decomposed or biodegraded, which can solve the environmental protection problems caused by traditional plastic bottles.

The connection method and structure of the bottle cap 10 and the bottle mouth 21 are usually determined according to the use and type of the liquid container. Figure 1 shows one of the embodiments. The upper bottle body 20 has an external thread 23 near the bottle mouth 21, and The inner side of the bottle cap 10 also has an inner thread 11 that can match the outer thread 23 (see FIG. 3 ). Therefore, the bottle cap 10 can be connected with the outer thread 23 of the upper bottle body 20 through the inner thread 11 .

The bottle body 30 is a spiral tube structure with two ends connected to each other made of a spiral paper tube with a multi-layer structure, and the spiral paper tube is made of natural fiber paper by spiral winding; A preferred embodiment is made of composite paper with at least two-layer structure. In other preferred embodiments of the present invention, the bottle body 30 is made of composite paper with more than two-layer structure (for example, three-layer structure). The structural strength of the bottle body 30 is further improved.

The bottle bottom 40 is made by molding using composite paper having at least two-layer structure. The composite paper is preferably made by overlapping at least two layers of natural fiber paper. In another preferred embodiment, a composite paper with a three-layer structure is used to make the bottom 40 of the bottle by molding. , as shown in Figures 3 and 5, the bottle bottom 40 is a cup-shaped structure with an opening facing down, the bottle bottom 40 includes a bottom surface 41 and a side wall 42 surrounding the bottom surface 41, and the bottle bottom 40 is inserted into the bottle body with the opening facing down. The bottom end of 30, the side wall 42 of the bottle body 30 and the bottle bottom 40 are bonded to the lower section bottle body 50 with biodegradable adhesive, and a film is formed on the inner wall of the lower section bottle body 50 and the inner surface of the bottle bottom 40. A cover layer 51 in the form of a shape, the cover layer 51 is formed by using vegetable glue to coat the inner wall of the lower bottle body 50 and the inner surface of the bottle bottom 40 by spraying, and the cover layer 51 can really fill the spiral paper tube. The gaps of each winding level and each seam, such as the seam between the bottle body 30 and the side wall 42 of the bottle bottom 40, provide completely airtight and waterproof functions in the interior of the lower bottle body 50, and through the oxygen permeability The test of rate OTR and water vapor permeability rate WVTR has the effect of 100% impermeability to water vapor and 100% impermeability to oxygen.

The top of the bottle body 50 of the lower section has an opening 52 (see Figures 2 and 3), and the connecting section 22 of the bottle body 20 of the upper section can be inserted into the opening 52 of the bottle body 50 of the lower section and then glued together with the biodegradable adhesive to form a A waterproof paper bottle with a film sprayed on the inside; a preferred embodiment of the biodegradable adhesive is the use of polylactic acid (PLA) adhesive.

In a preferred embodiment of the present invention, where the bottom end of the bottle body 30 and the side wall 42 of the bottle bottom 40 are glued together, there is a fitting groove 32 (see FIG. 3 ) formed by rolling, and the fitting groove 32 is facing The center direction of the bottle body 30 is concave and surrounds the bottle body 30 , and the fitting groove 32 can improve the reliability and structural strength of the connection between the bottle body 30 and the bottle bottom 40 .

Please refer to FIG. 3, in a preferred embodiment of the present invention, the connection between the connecting section 22 of the upper bottle body 20 and the lower section bottle body 50 has a snap-fit structure, which can improve the reliability of the connection between the upper section bottle body 20 and the lower section bottle body 50. degree and structural strength. The buckle structure includes: the bottle body 50 in the lower section. The inner flange 31 protruding from the top of the bottle body 30 toward the inner side of the bottle body 30 can be formed by curling the paper material at the top of the bottle body 30 inward; the upper bottle body 20 The outer side of the connecting segment 22 has a groove 24 at a position corresponding to the inner flange 31 , the groove 24 surrounds the connecting segment 22 , and the inner flange 31 can be fastened to the groove 24 . Since the bottle body 30 is made of a spiral paper tube with a multi-layer structure, and the spiral paper tube has excellent structural strength, it can better withstand radial or lateral pressure and tension, the top of the bottle body 30 and the inner flange 31 can reliably fasten the connecting section 22 to prevent loosening or deformation, so it can be used to contain beverages or liquids under pressure such as soda, and it meets the same strength requirements as the bottle and the product standard of 2 years of non-leakage.

The steps of an embodiment of the waterproof paper bottle of the novel inner side sprayed film include:

Using plant fiber-based mixture as the material, the bottle cap 10 and the upper bottle body 20 are made by injection molding technology. The top of the upper bottle body 20 has a bottle mouth 21 that can be connected with the bottle cap 10. The upper bottle body 20 faces There is a connecting section 22 extending in the direction of the bottom end;

Use a spiral paper tube with a multi-layer structure to make the bottle body 30;

The bottle bottom 40 is made by molding using the composite paper with at least two-layer structure, the bottle bottom 40 is a cup-shaped structure with an opening facing downward, and the bottle bottom 40 includes a bottom surface 41 and a side wall 42 surrounding the bottom surface 41;

The bottle bottom 40 is inserted into the bottom end of the bottle body 30 with the opening facing downward, and the bottle body 30 and the side wall 42 of the bottle bottom 40 are bonded into the lower bottle body 50 with biodegradable adhesive. The bottle bottom 40 is located at the bottom end of the lower bottle body 50, and the top end of the lower bottle body 50 has an opening 52;

Use vegetable glue to coat the inner wall of the lower section bottle body 50 and the inner surface of the bottle bottom 40 by spraying, and form a cover layer 51 on the inner wall of the lower section bottle body 50 and the inner surface of the bottle bottom 40 (see Figure 4A and Section 4A). 4B); and

Insert the connecting section 22 of the upper bottle body 20 into the opening 52 of the lower bottle body 50, and then use the biological The degraded viscose glues the upper bottle body 20 and the lower bottle body 50 to form the waterproof paper bottle with the inner spraying film of the present invention.

The present invention proposes a type of post-coating method, which uses vegetable glue to coat the inner wall of the lower bottle body 50 by spraying, and forms a covering layer 51 on the inner wall of the lower bottle body 50. This covering layer 51 can really fill the spiral The gaps in each winding level of the paper tube provide complete airtight and waterproof functions inside the lower bottle body 50, and have passed the tests of oxygen permeability OTR and water vapor permeability WVTR, with 100% impermeability to water vapor, 100% water vapor permeability The effect of impermeability of oxygen. The bottle cap 10 and the upper bottle body 20 are made of a mixture mainly made of plant fibers, and are made by injection molding technology. Since the mixture contains vegetable binders and has been tightly bonded and formed, in addition to having considerable structural strength, it also has excellent structural strength. In normal use, the liquid is mainly stored in the lower bottle body 50. Due to the excellent air tightness and waterproof performance of the inner side wall surface of the lower bottle body 50 and the covering layer 51 on the inner surface of the bottle bottom 40, it can be used for It is used to hold beverages or liquids with pressure, acidity, alkalinity or osmotic power, such as soft drinks, daily necessities or oils and fats.

4A and 4B show an exemplary embodiment, after the bottle body 30 and the side wall 42 of the bottle bottom 40 are bonded with biodegradable adhesive to form the lower bottle body 50, using a biodegradable adhesive Stretching into the spray head 60 inside the lower section bottle body 50, the vegetable glue is applied to the inner wall of the lower section bottle body 50 by spraying, and a covering layer 51 is formed on the inner wall of the lower section bottle body 50, in order to spray the vegetable glue more evenly, The spray head 60 has a plurality of nozzles 61 facing different angles. In a preferred embodiment of the present invention, in the process of spraying the vegetable glue, the spray head 60 can move along the axial direction of the lower bottle body 50. In an embodiment, the spray head 60 rotates continuously with the axis of the lower bottle body 50 as the rotating shaft, so as to spray the vegetable glue evenly to the inner wall of the lower bottle body 50 to form the covering layer 51 .

As a preferred embodiment of the new model, wherein the vegetable gum is the use of pine sap, cassava Vegetable glue made from flour or bamboo flour. In other preferred embodiments of the present invention, the vegetable gum is selected from the group consisting of tung oil, rubber and algin.

Although the present invention has been disclosed above through the above-mentioned embodiments, it is not intended to limit the present invention. Anyone who is familiar with the similar arts can make some changes and modifications without departing from the spirit and scope of the present invention. The scope of patent protection shall be subject to those defined by the claims attached to this specification.

30: bottle body

31: Inner flange

32: Chimeric groove

40: Bottom of the bottle

41: Underside

42: Sidewall

50: Lower bottle body

51: Overlay

52: Opening

60: Nozzle

61: Nozzle

Claims (6)

A waterproof paper bottle with a film sprayed inside, comprising: a bottle cap, an upper bottle body and a lower bottle body; The top of the upper bottle body has a bottle mouth that can be connected with the bottle cap, the upper bottle body extends toward the bottom end with a connecting section, and the bottle cap and the upper bottle body are made of plant fiber-based mixtures. Made by injection molding technology; The lower bottle body includes a bottle body and a bottle bottom. The bottle body is made of a spiral paper tube with a multi-layer structure. The bottle bottom is made of a composite paper with a three-layer structure by molding. It is a cup-shaped structure with an opening facing down, and the bottom of the bottle includes a bottom surface and a side wall surrounding the bottom surface. The side wall is bonded with biodegradable adhesive to form the lower bottle body, the top of the lower bottle body has an opening, and a covering layer is formed on the inner wall of the lower bottle body and the inner surface of the bottle bottom, and the covering layer is Use vegetable glue to coat the inner wall of the lower bottle body and the inner surface of the bottle bottom by spraying to form, the connecting section of the upper bottle body is inserted into the opening of the lower bottle body and then sprayed with the biodegradable adhesive. Glue glued connections. The waterproof paper bottle with the inner side sprayed with film according to claim 1, wherein the vegetable fiber-based mixture comprises: natural vegetable fiber powder and vegetable binder. As claimed in claim 2, the inner side of the waterproof paper bottle sprayed with a film, wherein the natural plant fiber powder is a plant fiber powder made of bamboo skin, and the plant-based binder comprises any one of natural resin and pine juice. The waterproof paper bottle with a film inside sprayed according to claim 1, wherein the biodegradable adhesive is polylactic acid (PLA) adhesive. The waterproof paper bottle with a film inside sprayed according to claim 1, wherein the vegetable glue is a vegetable glue made from pine sap, tapioca flour or bamboo powder. The waterproof paper bottle with an inner side sprayed film as claimed in claim 1, wherein the vegetable gum is selected from the group consisting of tung oil, rubber and algin.

Images