High oxygen barrier freshness preservation container

Abstract

To provide a high-oxygen barrier freshness preservation container. The solution includes a waterproof container 10 and a pull tab 20, both made of polyethylene furanoate (PEF). After food is placed into the waterproof container, the pull tab is welded to the opening 110 of the waterproof container using a welding technique to completely seal the waterproof container. The sealed waterproof container is then subjected to cold high-pressure sterilization. Another preferred embodiment further includes a housing and a bottom cover, in which the waterproof container is placed in the housing and detachably connected to the housing, and the bottom cover is detachably attached to the bottom of the housing. The waterproof container and pull tab of this invention are both made of biodegradable PEF, which has a better oxygen barrier effect than conventional plastic bottles (PET), and its detachable structure allows for complete recycling.

Description

[Technical Field]

[0001] The present invention relates to food containers, and more particularly to high oxygen barrier freshness-preserving containers. [Background technology]

[0002] Polyethylene terephthalate (PET) is currently the most widely used polyester material, and is used in many industries, including packaging, textiles, and electronic motors. However, PET is not biodegradable, which is gradually causing serious environmental problems. In addition to the environmental issues, PET has good oxygen barrier properties, which are the most important property for packaging materials, but its performance is far inferior to that of materials such as glass and aluminum, making it unsuitable for use alone in packaging that requires high barrier properties.

[0003] To solve the environmental problems caused by plastic bottles (also called PET bottles) made from PET (PET is not biodegradable), containers made from environmentally friendly, biodegradable materials are being proposed and mass-produced one after another. For example, in countries such as the United States, the United Kingdom, the Netherlands, and Denmark, manufacturers are proposing paper-based PET bottles made using one-piece molding technology. While such PET bottles made entirely from paper using one-piece molding technology have the advantage of being easy to manufacture in a short amount of time, they lack structural strength and pressure resistance, making them unsuitable for use as carbonated beverage bottles or bottles for containing other sparkling beverages or liquids (e.g., carbonated water).

[0004] Currently, containers made from biodegradable or recyclable materials (e.g., paper bottles) must meet the following requirements in order of priority to comply with increasingly stringent environmental regulations and industry demands: (1) each component must be recyclable, (2) the container must be made from bio-based raw materials, and (3) the container must be biodegradable or biodegradable.

[0005] On the other hand, although so-called biodegradable or recyclable containers are made from biodegradable or recyclable materials, it is usually difficult to separate the individual components of these eco-containers, making it impossible to separate and recover the individual components, and making it difficult to achieve complete recovery. Summary of the Invention

[0006] The technical problem that the present invention aims to solve is to provide a container that has a high oxygen barrier effect and is completely recyclable.

[0007] In order to solve the above technical problems, the present invention proposes a high oxygen barrier freshness preservation container, and the preferred embodiment has the following structure: A waterproof container and a pull top are included. The waterproof container is made of polyethylene furanoate (PEF) and includes an annular side wall and a bottom surface, the bottom surface being located at a lower end of the annular side wall and being integrally connected to the annular side wall, the upper end of the annular side wall being open to form a first opening, and an outer edge of the first opening having a flange protruding outward; The pull top is made of polyethylene furanoate (PEF) and is used to seal the waterproof container into a completely sealed container by sealing the first opening of the waterproof container. The pull top structure includes a cover plate, a biasing portion, and a joint portion. The joint portion is an annular member and is integrally connected to the surface of the cover plate. The axial direction of the joint portion is perpendicular to the cover plate. The joint portion is welded to the flange of the waterproof container. A first opening sheet is provided on the surface of the cover plate. The edge of the first opening sheet is integrally connected to the cover plate via a first annular weakened portion. The biasing portion protrudes upward from the surface of the cover plate. The thickness of the first weakened portion is smaller than the thickness of the cover plate. After the first weakened portion is broken by an external force, the first opening sheet separates from the cover plate, and a first notch is formed in the cover plate.

[0008] In a preferred embodiment of the high-oxygen barrier freshness preservation container of the present invention, a second aperture sheet is provided on the surface of the cover plate, and the edge of the second aperture sheet is integrally connected to the cover plate through a second annular weak portion, the thickness of the second weak portion is smaller than the thickness of the cover plate, and after the second weak portion is broken by external force, the second aperture sheet separates from the cover plate, and a second notch smaller than the first notch is formed in the cover plate.

[0009] In a preferred embodiment of the structure of the high-oxygen barrier freshness-preserving container of the present invention, the container further includes a housing and a bottom cover, wherein the housing is made of a paper cylindrical portion, the upper end of which has an upper opening and the lower end of which has a lower opening, and the inner surface of the housing has a first connecting portion near the upper opening, the bottom cover is made of biodegradable plastic and is detachably connected to the lower opening of the housing, the waterproof container is placed in the housing, the flange of the waterproof container is higher than the upper opening of the housing, and the outer surface of the annular side wall of the waterproof container has a second connecting portion near the first opening, and the second connecting portion is detachably connected to the first connecting portion.

[0010] One aspect of the present invention includes the high oxygen barrier freshness preservation container, a step of producing a pull-top using polyethylene furanoate (PEF), the pull-top structure including a cover plate, a biasing portion, and a joint portion, the joint portion being an annular member and integrally connected to the surface of the cover plate, the axial direction of the joint portion being perpendicular to the cover plate, a first aperture sheet being provided on the surface of the cover plate, an edge portion of the first aperture sheet being integrally connected to the cover plate via an annular first weakened portion, the biasing portion protruding upward from the surface of the cover plate, the thickness of the first weakened portion being smaller than the thickness of the cover plate, after the first weakened portion is broken by an external force, the first aperture sheet is separated from the cover plate, and a first notch is formed in the cover plate; A step of making a waterproof container using polyethylene furanoate (PEF), the waterproof container structure including an annular side wall and a bottom surface, the bottom surface being located at the lower end of the annular side wall and being integrally connected to the annular side wall, the upper end of the annular side wall being open to form a first opening, and the outer edge of the first opening having an outwardly protruding flange; Loading food ingredients into the waterproof container; a step of welding the joint of the pull top to the flange of the waterproof container by a welding technique to seal the waterproof container; and subjecting the waterproof container filled with foodstuffs and sealed to cold high-pressure sterilization.

[0011] In a preferred embodiment of the high-oxygen barrier freshness-preserving container of the present invention, the method further includes the step of fabricating a second aperture sheet on the surface of the cover plate, wherein the edge of the second aperture sheet is integrally connected to the cover plate via a second annular weak portion, the thickness of the second weak portion is smaller than the thickness of the cover plate, and after the second weak portion is broken by an external force, the second aperture sheet separates from the cover plate, and a second notch smaller than the first notch is formed in the cover plate.

[0012] In a preferred embodiment of the high oxygen barrier freshness preservation container of the present invention, a step of producing a housing, the housing being produced by a paper cylindrical portion, the upper end of the housing having an upper end opening, the lower end of the housing having a lower end opening, and a first connecting portion on an inner surface of the housing; making a bottom cover from biodegradable plastic; Producing a second connecting portion on an outer surface of the annular side wall of the waterproof container near the first opening, the second connecting portion being connectable to the first connecting portion; placing the waterproof container after cold high-pressure sterilization in the housing, making the flange of the waterproof container higher than the upper end opening of the housing, and connecting the second connecting portion of the waterproof container to the first connecting portion of the housing; The method further includes the step of removably connecting a bottom cover to the lower end opening of the housing.

[0013] Preferably, the first and second connecting portions have a screw structure.

[0014] The advantages and effects of this invention are that the waterproof container and pull top of this invention are both made from biodegradable PEF, which has a better oxygen barrier effect than conventional plastic bottles (PET material), and its detachable structure allows for complete recycling.

[0015] Specific embodiments of the present invention and their technical features and advantages will be described below in conjunction with the drawings. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a diagram showing the configuration of one embodiment of a high-oxygen barrier freshness preservation container according to the present invention. [Figure 2] FIG. 2 is an exploded view of the structure of the embodiment of FIG. 1. [Figure 3] FIG. 2 is a configuration diagram of the cross section AA of FIG. [Figure 4] 1 is a schematic diagram of an embodiment of the sealing process of the high-oxygen barrier freshness preservation container of the present invention. [Figure 5] 1 is a schematic diagram of the structure of an example of use of the high-oxygen barrier freshness preservation container of the present invention. [Figure 6] 1 is a schematic diagram of the structure of another example of use of the high-oxygen-barrier freshness-preservation container of the present invention. [Figure 7] 1 is a structural diagram of another embodiment of the high-oxygen-barrier freshness-preserving container of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] In the embodiments described in the specification and drawings of the present invention, the directions (e.g., up, down, left, right, front, rear) are based on the content shown in the drawings and are used to explain the interrelationships (e.g., positional, connection, and operational relationships) between each component or structure in the embodiments. In principle, when the components or structures referred to in the specification of the present invention match the positions shown in the drawings, the directions are appropriate. If the positions of the components or structures referred to in the specification of the present invention are changed, the directions should also be changed accordingly. In the structures of the embodiments depicted in the drawings of the present invention, the relative positions of some structures or components may be difficult to distinguish due to overlapping with each other depending on the viewing angle of the drawings. Therefore, some structures may be omitted or not shown in the drawings, but this is not an error in the drawing configuration. The configuration of each structure or component and their relative positions and relationships can be understood by referring to the content of all the drawings.

[0018] 1 and 2, which are a structural diagram and an exploded view of one embodiment of a high-oxygen-barrier freshness-preserving container according to the present invention. The structure of a preferred embodiment of the high-oxygen-barrier freshness-preserving container according to the present invention includes a waterproof container 10 and a pull tab 20. Both the waterproof container 10 and the pull tab 20 are made of polyethylene furanoate (PEF).

[0019] Preferably, the waterproof container 10 is made of PEF and manufactured by injection blow molding. The waterproof container 10 includes an annular side wall 11 and a bottom 12. The bottom 12 is located at the lower end of the annular side wall 11 and is integrally connected to the annular side wall 11. The upper end of the annular side wall 11 is open, forming a first opening 110. The outer edge of the first opening 110 has a flange 111 that protrudes outward.

[0020] The pull top 20 is used to seal the first opening 110 of the waterproof container 10, thereby sealing the waterproof container 10 into a completely sealed container. The pull top 20 has a structure including a cover plate 21, a biasing portion 22, and a joint portion 23. The joint portion 23 is an annular member that is integrally connected to the surface of the cover plate 21 and welded to the flange 111 of the waterproof container 10 (see FIG. 3), with the axial direction of the joint portion 23 being perpendicular to the cover plate 21. In a preferred embodiment, the joint portion 23 surrounds the outside of the flange 111 of the first opening 110 (see FIG. 3). In another preferred embodiment, the joint portion 23 is inserted and fitted into the inside of the first opening 110 of the waterproof container 10. A first opening sheet 211 is provided on the surface of the cover plate 21, and an edge of the first opening sheet 211 is integrally connected to the cover plate 21 via a ring-shaped first fragile portion 212, which has a thickness smaller than that of the cover plate 21. The biasing portion 22 protrudes upward from the surface of the cover plate 21. Referring to FIG. 5 , a user can generate a force acting on the first fragile portion 212 by simply pulling the biasing portion 22 upward, causing the first fragile portion 212 to be broken by the external force. After the first fragile portion 212 is broken by the external force, the first opening sheet 211 separates from the cover plate 21, forming a first notch 213 in the cover plate 21, allowing the user to remove food stored in the waterproof container 10 through the first notch 213.

[0021] 1 and 2, in the structure of another preferred embodiment of the high-oxygen-barrier freshness-preserving container of the present invention, a second apertured sheet 214 is further included on the surface of the cover plate 21. The edge of the second apertured sheet 214 is integrally connected to the cover plate 21 via a ring-shaped second weakened portion 215, and the thickness of the second weakened portion 215 is smaller than the thickness of the cover plate 21. After the second weakened portion 215 is broken by an external force, the second apertured sheet 214 separates from the cover plate 21, forming a second notch 216 in the cover plate 21, which is preferably smaller than the first notch 213. In a preferred embodiment, the second notch 216 is a hole for inserting a straw. As shown in FIG. 6, the user does not need to destroy the first fragile portion 212 and form a larger first notch 213, but can simply insert the straw P into the second opening sheet 214, causing the straw P to penetrate the cover plate 21, and use the straw P to obtain food or beverage inside the waterproof container 10.

[0022] The high-oxygen barrier freshness preservation container proposed in this invention is: A step of fabricating the above-mentioned pull top 20 including a cover plate 21, a biasing portion 22, and a joint portion 23 from polyethylene furanoate (PEF); a step of manufacturing the waterproof container 10 using polyethylene furanoate (PEF), the waterproof container 10 having a structure including an annular side wall 11 and a bottom surface 12, the bottom surface 12 being located at the lower end of the annular side wall 11 and being integrally connected to the annular side wall 11, the upper end of the annular side wall 11 being open to form a first opening 110, and the outer edge of the first opening 110 having an outwardly protruding flange 111; Loading ingredients into a waterproof container 10; a step of welding the joint 23 of the pull top 20 to the flange 111 of the waterproof container 10 by a welding technique to seal the waterproof container 10; and subjecting the waterproof container 10 filled with foodstuffs and sealed therein to cold high-pressure sterilization (HPP). Cold high-pressure sterilization (HPP), also known as cold high-pressure technology, uses ultra-high water pressure and long-term low-temperature technology to achieve physical sterilization, and is suitable for sterilizing bottled ingredients and liquids in food processing.

[0023] In a preferred embodiment, the welding technique is laser welding or electrothermal welding. Fig. 4 is a schematic diagram showing the operation when laser welding is used as the welding technique. A waterproof container 10 filled with food ingredients is placed on a rotatable table T. While the table T rotates the waterproof container 10 filled with food ingredients, a laser beam generated from a laser head L welds the joint 23 of the pull top 20 to the flange 111 of the waterproof container 10, sealing the waterproof container 10.

[0024] FIG. 7 is a structural diagram of another embodiment of the high-oxygen-barrier freshness-preserving container of the present invention. The preferred embodiment of the high-oxygen-barrier freshness-preserving container of the present invention further includes a housing 30 and a bottom cover 40. The housing 30 is a cylindrical paper body having an upper end opening 31 and a lower end opening 32. The housing 30 has a first connection portion 33 on the inner surface of the housing 30 near the upper end opening 31. The bottom cover 40 is made of biodegradable plastic and is detachably attached to the lower end opening 32 of the housing 30. The waterproof container 10, which has been filled with food material and has been sealed and sterilized, is inserted into the housing 30, with the flange 111 of the waterproof container 10 higher than the upper end opening 31. The outer surface of the annular side wall 11 of the waterproof container 10 has a second connection portion 13 near the first opening 110, which is detachably connected to the first connection portion 33. Therefore, the waterproof container 10 and the pull top 20 can be completely separated from the housing 30 and the bottom cover 40, and in the case of separate collection, complete collection is achieved.

[0025] In a preferred embodiment, the first connecting portion 33 and the second connecting portion 13 are threaded. In another preferred embodiment, the first connecting portion 33 and the second connecting portion 13 are fastened with a tenon and groove structure that can be quickly snapped or separated. Anyone skilled in the art with common sense can easily implement or replace the present invention after understanding the technical features and effects thereof.

[0026] The present invention has been disclosed by the above-mentioned embodiments, but is not limited to the above-mentioned embodiments. Those skilled in the art may make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the utility model registration claims attached hereto. [Explanation of symbols]

[0027] 10 Waterproof container 11 Annular side wall 110 First opening 111 flange 12 Bottom 13 Second connection 20 Pull-top candy 21 Cover plate 211 First opening sheet 212 First weak part 213 First Notch 214 Second opening sheet 215 Second weak point 216 Second notch 22 energizing portion 23 Joint 30 Housing 31 Top opening 32 Bottom opening 33 First connection 40 Bottom cover L laser head P straw T mounting table

Claims

1. A high-oxygen barrier freshness preservation container, A waterproof container and a pull top are included. The waterproof container is made of polyethylene furanoate (PEF), includes an annular side wall and a bottom surface, has a first opening formed therein, and has an outer edge of the first opening having a flange protruding outward; a first opening sheet provided on the surface of the cover plate, an edge of which is integrally connected to the cover plate via a first annular weakened portion, the first opening sheet protruding upward from the surface of the cover plate, and after the first weakened portion is broken by an external force, the first opening sheet is separated from the cover plate and a first notch is formed in the cover plate.

2. A high-oxygen barrier freshness preservation container as described in claim 1, wherein a second aperture sheet is provided on the surface of the cover plate, the edge of the second aperture sheet is integrally connected to the cover plate via a second annular weak portion, the thickness of the second weak portion is smaller than the thickness of the cover plate, and after the second weak portion is broken by an external force, the second aperture sheet separates from the cover plate and a second notch smaller than the first notch is formed in the cover plate.

3. 3. A high-oxygen barrier freshness-preserving container as described in claim 1 or 2, further comprising a housing and a bottom cover, wherein the housing is made of a paper cylindrical portion, the upper end of which has an upper opening and the lower end of which has a lower opening, and the inner surface of the housing has a first connecting portion near the upper opening, the bottom cover is made of biodegradable plastic and is removably connected to the lower opening of the housing, the waterproof container is inserted into the housing, and the flange of the waterproof container is higher than the upper opening of the housing, and the outer surface of the annular side wall of the waterproof container has a second connecting portion near the first opening, and the second connecting portion is removably connected to the first connecting portion.

4. The high-oxygen-barrier freshness-preserving container according to claim 3 , wherein the first connecting portion and the second connecting portion have a screw structure.

Images