EP3875392A1 - Snap-fitting structure of paper and plastic container - Google Patents

Snap-fitting structure of paper and plastic container Download PDF

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Publication number
EP3875392A1
EP3875392A1 EP19878733.5A EP19878733A EP3875392A1 EP 3875392 A1 EP3875392 A1 EP 3875392A1 EP 19878733 A EP19878733 A EP 19878733A EP 3875392 A1 EP3875392 A1 EP 3875392A1
Authority
EP
European Patent Office
Prior art keywords
cover
flange
clamp ring
paper
container
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19878733.5A
Other languages
German (de)
French (fr)
Other versions
EP3875392A4 (en
Inventor
Jun Fan
Ji TONG
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Be Green Packaging Co Ltd
Original Assignee
Be Green Packaging Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Be Green Packaging Co Ltd filed Critical Be Green Packaging Co Ltd
Publication of EP3875392A1 publication Critical patent/EP3875392A1/en
Publication of EP3875392A4 publication Critical patent/EP3875392A4/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/0202—Removable lids or covers without integral tamper element
    • B65D43/0204—Removable lids or covers without integral tamper element secured by snapping over beads or projections
    • B65D43/0212—Removable lids or covers without integral tamper element secured by snapping over beads or projections only on the outside, or a part turned to the outside, of the mouth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D1/00—Containers having bodies formed in one piece, e.g. by casting metallic material, by moulding plastics, by blowing vitreous material, by throwing ceramic material, by moulding pulped fibrous material, by deep-drawing operations performed on sheet material
    • B65D1/34—Trays or like shallow containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D43/00—Lids or covers for rigid or semi-rigid containers
    • B65D43/02—Removable lids or covers
    • B65D43/08—Removable lids or covers having a peripheral flange fitting over the rim of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00064—Shape of the outer periphery
    • B65D2543/00074—Shape of the outer periphery curved
    • B65D2543/00092—Shape of the outer periphery curved circular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00268—Paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00018—Overall construction of the lid
    • B65D2543/00259—Materials used
    • B65D2543/00296—Plastic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/0049—Contact between the container and the lid on the inside or the outside of the container on the inside, or a part turned to the inside of the mouth of the container
    • B65D2543/00527—NO contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00481—Contact between the container and the lid on the inside or the outside of the container
    • B65D2543/00537—Contact between the container and the lid on the inside or the outside of the container on the outside, or a part turned to the outside of the mouth of the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00611—Profiles
    • B65D2543/00648—Flange or lip
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00601—Snapping means on the container
    • B65D2543/00675—Periphery concerned
    • B65D2543/00685—Totality
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00722—Profiles
    • B65D2543/0074—Massive bead
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D2543/00—Lids or covers essentially for box-like containers
    • B65D2543/00009—Details of lids or covers for rigid or semi-rigid containers
    • B65D2543/00444—Contact between the container and the lid
    • B65D2543/00592—Snapping means
    • B65D2543/00712—Snapping means on the lid
    • B65D2543/00787—Periphery concerned
    • B65D2543/00796—Totality

Definitions

  • the present utility model pertains to the technical field of packaging, and particularly relates to a snap-fitting structure of paper and plastic container.
  • Beverage cups generally use polyester (PET), polyethylene (PE) or polypropylene (PP) as a raw material, which is heated at a high temperature after the addition of an organic solvent and is then molded by method of blow molding, extrusion or injection molding in a mold of plastics.
  • PET polyester
  • PE polyethylene
  • PP polypropylene
  • plastics are hardly degradable and have a low recycling rate, they are very environmentally unfriendly.
  • environmentally friendly paper material such as hand bags and milk bags, but there is no precedent for using paper material to make beverage cups. Judging from hardness and moldability, paper material can absolutely be used to make beverage cups. Therefore, using paper material as the main material to produce beverage cups not only is environmentally friendly and safe but also forms a more beautiful appearance than that of plastic bottles and will be favored by more people.
  • the covers of all beverage cups used at present directly cover the containers and are not tight, so the beverage or suspension is liable to spillover and meanwhile the covers are easily disengaged with an external force.
  • the present utility model provides a novel snap-fitting structure of paper and plastic container of which cover body is not easily disengaged, to solve the foregoing problems.
  • a snap-fitting structure of paper and plastic container comprises a container, and a cover body covering the container.
  • the container comprises a body, and a clamping portion extending out of the edge of the body.
  • the clamping portion comprises a connecting portion connected to the body, and a clamp ring extending out of the connecting portion.
  • the included angle between the contour line of the connecting portion and the central axis of the body is an acute angle, and the contour line of the clamp ring is parallel to the central axis of the body.
  • the cover body comprises a cover bottom, a cover wall extending out of the edge of the cover bottom, and a flange arranged on the inner side wall of the cover wall.
  • the outer diameter of the clamp ring is equivalent to the inner diameter of the cover wall.
  • the flange and the cover bottom are arranged at an interval, and the clamp ring is clamped between the flange and the cover bottom when the cover body covers the container.
  • the flange and a free end of the cover wall are arranged at an interval.
  • the contour line of the flange is arc-shaped.
  • the distance from the side wall of the body to the clamp ring is equal to the height of the arc of the flange.
  • the height of the clamp ring is equal to the minimum distance from the flange to the cover bottom.
  • the container and the cover body of the snap-fitting structure of paper and plastic container provided by the present utility model have the clamping portion and the flange, respectively.
  • the clamp ring deforms under the pressing of the flange.
  • the clamp ring restores to the original state or is still in a deformed state to abut against the cover wall, and is clamped between the cover bottom and the flange, such that the container and the cover body are fitted in a covering manner and are not disengaged without an external force.
  • FIG. 1 and FIG. 2 are structural schematic views of a snap-fitting structure of paper and plastic container provided by the present utility model.
  • the paper cup in the snap-fitting structure of paper and plastic container comprises a container 10, and a cover body 20 covering the container 10. It can be understood that the container 10 and the cover body 20 both can be pressed from paper pulp or paper and plastic material.
  • the container 10 comprises a body 11, and a clamping portion 12 extending out of the edge of the body 11. It is conceivable that the container 10 may further comprise some other functional structures, such as a cup handle part and an ornamental part, which are technologies known to those skilled in the art, and will not be described in detail here.
  • the body 11 is used to hold various items, such as liquid and suspension, which is an existing technology and will not be described in detail here.
  • the clamping portion 12 comprises a connecting portion 121 connected to the body 11, and a clamp ring 122 extending out of the connecting portion 121.
  • the included angle between the contour line of the connecting portion 121 and the central axis of the body 11 is an acute angle
  • the contour line of the clamp ring 122 is parallel to the central axis of the body 11.
  • the cover body 20 comprises a cover body 21, a cover wall 22 extending out of the edge of the cover body 21, and a flange 23 arranged on the inner side wall of the cover wall 22. It is conceivable that the cover body 20 may further comprise some other functional structures, such as a lifting handle and a jack.
  • the cover body 21 is a technology known to those skilled in the art, and will not be described in detail here.
  • the flange 23 and the cover bottom 21 are arranged at an interval. In the direction along the central axis of the body 11, the height of the clamp ring 122 is smaller than or equal to the minimum distance from the flange 23 to the cover body 21. When the cover body 20 covers the container 10, the clamp ring 122 is clamped between the flange 23 and the cover bottom 21.
  • the contour line of the clamp ring 122 is parallel to the central axis of the body 11. Further, in order to provide a greater error-tolerant rate, the flange 23 and a free end of the cover wall 22 are arranged at an interval. In a cross section along the central axis of the body 11, the contour line of the flange 23 can be arc-shaped. Of course, it is conceivable that the contour line of the flange 23 can be in other shapes, too, such as wave and teeth, which can be selected according to the actual need. For a better snapping effect, the distance from the side wall of the body 11 to the clamp ring 122 is equal to the height of the arc of the flange 23.
  • the container 10 and the cover body 20 of the snap-fitting structure of paper and plastic container provided by the present utility model have the clamping portion 12 and the flange 23 respectively.
  • the clamp ring 122 deforms under the pressing of the flange 23.
  • the clamp ring 122 restores to the original state or is still in a deformed state to abut against the cover wall 22, and is clamped between the cover bottom 21 and the flange 23, such that the container 10 and the cover body 20 are fitted in a covering manner and are not disengaged without an external force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Details Of Rigid Or Semi-Rigid Containers (AREA)
  • Packages (AREA)
  • Closures For Containers (AREA)

Abstract

Disclosed is a snap-fitting structure of a paper and plastic container, the paper and plastic container comprising a container (10) and a cover body (20), the container (10) comprising a body (11) and a clamping portion (12), the clamping portion (12) comprising a connecting portion (121) and a clamp ring (122), wherein in a cross section along a central axis of the body (11), the included angle between the contour line of the connecting portion (121) and the central axis of the body (11) is an acute angle, the contour line of the clamp ring (122) is parallel to the central axis of the body (11), the cover body (20) comprises a cover bottom (21), a cover wall (22) and a flange (23), the outer diameter of the clamp ring (122) is equivalent to the inner diameter of the cover wall (22), the flange (23) and the cover bottom (21) are arranged at an interval, and the clamp ring (122) is clamped between the flange (23) and the cover bottom (21) when the cover body (20) covers the container (10). According to the snap-fitting structure of the paper and plastic container, when the clamp ring (122) is beyond the flange (23), the clamp ring (122) restores to the original state or is still in a deformed state to abut against the cover wall (22), and is clamped between the cover bottom (21) and the flange (23), such that the container (10) and the cover body (20) are fitted in a covering manner and are not disengaged without an external force.

Description

    TECHNICAL FIELD
  • The present utility model pertains to the technical field of packaging, and particularly relates to a snap-fitting structure of paper and plastic container.
    • BACKGROUND ART
  • Beverage cups generally use polyester (PET), polyethylene (PE) or polypropylene (PP) as a raw material, which is heated at a high temperature after the addition of an organic solvent and is then molded by method of blow molding, extrusion or injection molding in a mold of plastics. As plastics are hardly degradable and have a low recycling rate, they are very environmentally unfriendly. At present, many items have begun to use environmentally friendly paper material, such as hand bags and milk bags, but there is no precedent for using paper material to make beverage cups. Judging from hardness and moldability, paper material can absolutely be used to make beverage cups. Therefore, using paper material as the main material to produce beverage cups not only is environmentally friendly and safe but also forms a more beautiful appearance than that of plastic bottles and will be favored by more people. However, the covers of all beverage cups used at present directly cover the containers and are not tight, so the beverage or suspension is liable to spillover and meanwhile the covers are easily disengaged with an external force.
    • SUMMARY OF THE UTILITY MODEL
  • In light of the above, the present utility model provides a novel snap-fitting structure of paper and plastic container of which cover body is not easily disengaged, to solve the foregoing problems.
  • A snap-fitting structure of paper and plastic container is provided. The paper and plastic container comprises a container, and a cover body covering the container. The container comprises a body, and a clamping portion extending out of the edge of the body. The clamping portion comprises a connecting portion connected to the body, and a clamp ring extending out of the connecting portion. In a cross section along the central axis of the body, the included angle between the contour line of the connecting portion and the central axis of the body is an acute angle, and the contour line of the clamp ring is parallel to the central axis of the body. The cover body comprises a cover bottom, a cover wall extending out of the edge of the cover bottom, and a flange arranged on the inner side wall of the cover wall. The outer diameter of the clamp ring is equivalent to the inner diameter of the cover wall. The flange and the cover bottom are arranged at an interval, and the clamp ring is clamped between the flange and the cover bottom when the cover body covers the container.
  • Further, the flange and a free end of the cover wall are arranged at an interval.
  • Further, in a cross section along the central axis of the body, the contour line of the flange is arc-shaped.
  • Further, the distance from the side wall of the body to the clamp ring is equal to the height of the arc of the flange.
  • Further, in the direction along the central axis of the body, the height of the clamp ring is equal to the minimum distance from the flange to the cover bottom.
  • Compared with the prior art, the container and the cover body of the snap-fitting structure of paper and plastic container provided by the present utility model have the clamping portion and the flange, respectively. When the cover body covers the container, as the outer diameter of the clamp ring is equivalent to the inner diameter of the cover wall, the clamp ring deforms under the pressing of the flange. When the clamp ring is beyond the flange, the clamp ring restores to the original state or is still in a deformed state to abut against the cover wall, and is clamped between the cover bottom and the flange, such that the container and the cover body are fitted in a covering manner and are not disengaged without an external force.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • FIG. 1 is a structural schematic view of a snap-fitting structure of paper and plastic container provided by the present utility model.
    • FIG. 2 is a sectional structural schematic view of the snap-fitting structure of paper and plastic container in FIG. 1.
    DETAILED DESCRIPTION
  • Below a specific embodiment of the present utility model is further described in detail. It should be understood that the description of the embodiment of the present utility model is not intended to limit the protection scope of the present utility model.
  • FIG. 1 and FIG. 2 are structural schematic views of a snap-fitting structure of paper and plastic container provided by the present utility model. The paper cup in the snap-fitting structure of paper and plastic container comprises a container 10, and a cover body 20 covering the container 10. It can be understood that the container 10 and the cover body 20 both can be pressed from paper pulp or paper and plastic material.
  • The container 10 comprises a body 11, and a clamping portion 12 extending out of the edge of the body 11. It is conceivable that the container 10 may further comprise some other functional structures, such as a cup handle part and an ornamental part, which are technologies known to those skilled in the art, and will not be described in detail here. The body 11 is used to hold various items, such as liquid and suspension, which is an existing technology and will not be described in detail here. The clamping portion 12 comprises a connecting portion 121 connected to the body 11, and a clamp ring 122 extending out of the connecting portion 121. In a cross section along the central axis of the body 121, the included angle between the contour line of the connecting portion 121 and the central axis of the body 11 is an acute angle, and the contour line of the clamp ring 122 is parallel to the central axis of the body 11.
  • The cover body 20 comprises a cover body 21, a cover wall 22 extending out of the edge of the cover body 21, and a flange 23 arranged on the inner side wall of the cover wall 22. It is conceivable that the cover body 20 may further comprise some other functional structures, such as a lifting handle and a jack. The cover body 21 is a technology known to those skilled in the art, and will not be described in detail here. The flange 23 and the cover bottom 21 are arranged at an interval. In the direction along the central axis of the body 11, the height of the clamp ring 122 is smaller than or equal to the minimum distance from the flange 23 to the cover body 21. When the cover body 20 covers the container 10, the clamp ring 122 is clamped between the flange 23 and the cover bottom 21. In order to make the clamp ring 122 contact a surface of the cover wall 22, in a cross section along the central axis of the body 11, the contour line of the clamp ring 122 is parallel to the central axis of the body 11. Further, in order to provide a greater error-tolerant rate, the flange 23 and a free end of the cover wall 22 are arranged at an interval. In a cross section along the central axis of the body 11, the contour line of the flange 23 can be arc-shaped. Of course, it is conceivable that the contour line of the flange 23 can be in other shapes, too, such as wave and teeth, which can be selected according to the actual need. For a better snapping effect, the distance from the side wall of the body 11 to the clamp ring 122 is equal to the height of the arc of the flange 23.
  • Compared with the prior art, the container 10 and the cover body 20 of the snap-fitting structure of paper and plastic container provided by the present utility model have the clamping portion 12 and the flange 23 respectively. When the cover body 20 covers the container 10, as the outer diameter of the clamp ring 122 is equivalent to the inner diameter of the cover wall 22, the clamp ring 122 deforms under the pressing of the flange 23. When the clamp ring 122 is beyond the flange 23, the clamp ring 122 restores to the original state or is still in a deformed state to abut against the cover wall 22, and is clamped between the cover bottom 21 and the flange 23, such that the container 10 and the cover body 20 are fitted in a covering manner and are not disengaged without an external force.
  • The above embodiment is only a preferred embodiment of the present utility model and is not intended to limit the protection scope of the present utility model. All modifications, identical replacements and improvements made without departing from the spirit of the present utility model shall be within the protection scope of the present utility model.

Claims (5)

  1. A snap-fitting structure of paper and plastic container, the paper and plastic container comprising a container, and a cover body covering the container, wherein the container comprises a body, and a clamping portion extending out of the edge of the body, the clamping portion comprises a connecting portion connected to the body, and a clamp ring extending out of the connecting portion, in a cross section along the central axis of the body the included angle between the contour line of the connecting portion and the central axis of the body is an acute angle, and the contour line of the clamp ring is parallel to the central axis of the body, the cover body comprises a cover bottom, a cover wall extending out of the edge of the cover bottom, and a flange arranged on the inner side wall of the cover wall, the flange and the cover bottom are arranged at an interval, the outer diameter of the clamp ring is equivalent to the inner diameter of the cover wall, and the clamp ring is clamped between the flange and the cover bottom when the cover body covers the container.
  2. The snap-fitting structure of paper and plastic container according to claim 1, wherein the flange and a free end of the cover wall are arranged at an interval.
  3. The snap-fitting structure of paper and plastic container according to claim 1, wherein in a cross section along the central axis of the body, the contour line of the flange is arc-shaped.
  4. The snap-fitting structure of paper and plastic container according to claim 3, wherein the distance from the side wall of the body to the clamp ring is equal to the height of the arc of the flange.
  5. The snap-fitting structure of paper and plastic container according to claim 1, wherein in the direction along the central axis of the body, the height of the clamp ring is equal to the minimum distance from the flange to the cover bottom.
EP19878733.5A 2018-10-29 2019-10-28 Snap-fitting structure of paper and plastic container Withdrawn EP3875392A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201821765785.1U CN209427328U (en) 2018-10-29 2018-10-29 A kind of fastening structure of paper-plastic container
PCT/CN2019/113704 WO2020088409A1 (en) 2018-10-29 2019-10-28 Snap-fitting structure of paper and plastic container

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EP3875392A1 true EP3875392A1 (en) 2021-09-08
EP3875392A4 EP3875392A4 (en) 2022-08-03

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EP (1) EP3875392A4 (en)
JP (2) JP2022506324A (en)
KR (1) KR20210092752A (en)
CN (1) CN209427328U (en)
AU (1) AU2019373715A1 (en)
CA (1) CA3118008A1 (en)
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WO (1) WO2020088409A1 (en)

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KR20210092752A (en) 2021-07-26
CN209427328U (en) 2019-09-24
US20210387773A1 (en) 2021-12-16
WO2020088409A1 (en) 2020-05-07
MX2021004666A (en) 2021-06-23
AU2019373715A1 (en) 2021-05-20
JP3246016U (en) 2024-03-13
EP3875392A4 (en) 2022-08-03
JP2022506324A (en) 2022-01-17
CA3118008A1 (en) 2020-05-07

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