CN110127190B - Twist-open cap with receiving slot - Google Patents

Twist-open cap with receiving slot Download PDF

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Publication number
CN110127190B
CN110127190B CN201810136020.XA CN201810136020A CN110127190B CN 110127190 B CN110127190 B CN 110127190B CN 201810136020 A CN201810136020 A CN 201810136020A CN 110127190 B CN110127190 B CN 110127190B
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CN
China
Prior art keywords
cover
groove
sealing
wall
ring
Prior art date
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Application number
CN201810136020.XA
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Chinese (zh)
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CN110127190A (en
Inventor
骆轶
王正德
杨春香
王荣华
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YIWU EASY OPEN END INDUSTRY CORP
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YIWU EASY OPEN END INDUSTRY CORP
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Priority to CN201810136020.XA priority Critical patent/CN110127190B/en
Publication of CN110127190A publication Critical patent/CN110127190A/en
Application granted granted Critical
Publication of CN110127190B publication Critical patent/CN110127190B/en
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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
    • B65D41/00—Caps, e.g. crown caps or crown seals, i.e. members having parts arranged for engagement with the external periphery of a neck or wall defining a pouring opening or discharge aperture; Protective cap-like covers for closure members, e.g. decorative covers of metal foil or paper
    • B65D41/32—Caps or cap-like covers with lines of weakness, tearing-strips, tags, or like opening or removal devices, e.g. to facilitate formation of pouring openings
    • B65D41/34—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt
    • 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
    • B65D43/06—Removable lids or covers having a peripheral channel embracing the rim of the container
    • B65D43/065—Removable lids or covers having a peripheral channel embracing the rim of the container the peripheral channel having an inverted U-shape
    • 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
    • B65D49/00—Arrangements or devices for preventing refilling of containers
    • B65D49/12—Arrangements or devices for preventing refilling of containers by destroying, in the act of opening the container, an integral portion thereof
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/02—Collars or rings
    • 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
    • B65D53/00—Sealing or packing elements; Sealings formed by liquid or plastics material
    • B65D53/04—Discs
    • 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
    • B65D2401/00—Tamper-indicating means
    • B65D2401/15—Tearable part of the closure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/80—Packaging reuse or recycling, e.g. of multilayer packaging

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)

Abstract

The invention discloses a twist-open cover with a containing groove, which comprises a cover top and a cylindrical cover wall, wherein an anti-theft ring is arranged at the lower part of the cover wall, a sealing gasket is arranged at the lower surface of the cover top, an inner sealing ring for abutting against the inner wall of a container opening and an outer sealing ring for abutting against the outer wall of the container opening are downwards integrally extended at the periphery of the sealing gasket, a sealing groove with a downward opening is formed between the inner sealing ring and the outer sealing ring, the top surface of the sealing gasket, which corresponds to the sealing groove up and down, is provided with the containing groove, when the cover is twisted open to cover the container opening, the bottom of the sealing groove is tightly attached to the upper edge of the mouth of the container, the cross section area of the containing groove is reduced, and the bottom of the sealing groove is tightly attached to the lower surface of the cover top. The invention effectively solves the problem that the twisting cover in the prior art is easy to cause container collapse and container anti-theft ring neck deformation due to overlarge cover top pressure in the cover closing process, and has high practical value.

Description

Twist-open cap with receiving slot
Technical Field
The invention relates to the technical field of packaging containers, in particular to a twist cover with a containing groove.
Background
The twist-open cap mounted on the mouth of a container such as a can has the following structure: the anti-theft device comprises a cover top, a side edge of the cover top and a synthetic resin sealing gasket adhered to the inner side of the cover top, wherein an anti-theft ring is arranged on the lower side of the side edge and is connected with the side edge through a bridge. The sealing gasket is contacted with the container opening and has a certain compression amount by sleeving the container opening and applying a certain pressure on the cover top, and the threads are molded by profiling the side edges of the cover and the threads on the opening of the metal packaging container, and the anti-theft ring is curled and sealed with the opening of the metal packaging container so that the twist cover can be well sealed on the container and the tightness is ensured. The cover is sleeved into the container mouth, after a certain pressure is applied to the cover top, the thread forming knife in the middle of the side edge of the cover and the sealing knife at the lower anti-theft ring are rotated, the cover thread is formed according to the container mouth thread, and the cover anti-theft ring is formed according to the neck structure of the can mouth anti-theft ring. In order to ensure the sealing performance of the cover after the cover is sealed, quite pressure is often applied to the cover top during can sealing, so that the sealing gasket and the container opening can be ensured to be sealed under a certain interference, but the excessive cover top pressure can cause the problems of container collapse, container anti-theft ring neck deformation and the like. The torsion cover is broken after being opened, so that the torsion cover cannot be restored to the original state, and the antitheft effect is achieved, however, in the actual process, the situation that the opening of the container is not completely consistent in molding, the antitheft ring cannot be particularly attached to the convex ring of the container during rolling and sealing, the torsion cover can rotate a certain angle when being opened, the antitheft ring is blocked by the convex ring after the antitheft ring and the torsion cover move upwards for a small distance at first, and the bridge of the torsion cover starts to be broken after the antitheft ring and the torsion cover continue to rotate; in particular to a metal container, the cross section of a convex ring, which is used for limiting the upward movement of an anti-theft ring, of the neck of the container mouth can only be formed into an arc-shaped structure, so that the anti-theft ring cannot be tightly attached to the anti-theft ring when the anti-theft ring is rolled and sealed, and a certain angle is generally rotated when the anti-theft ring is opened, so that a potential safety hazard exists, namely, when the anti-theft ring is rotated under certain conditions, the compression amount of a sealing gasket is relieved before a bridge is broken, the tightness is destroyed, the appearance of the anti-theft ring is intact, the anti-theft function of the anti-theft ring is lost, or a product is spoiled unknowingly, and serious reputation influence is possibly caused to a product manufacturing enterprise. The Chinese patent document with publication number CN107098056A discloses a leak-proof bottle cap, which comprises a bottle cap outer side wall and is also provided with: a finish engagement recess for engaging with a finish; the inner side flow stopping wall of the bottle cap is used for pressing the bottle mouth from the inside to prevent side leakage; the bottle cap extension surface is connected with the bottle cap inner side flow stopping wall and can pull the bottle cap inner side flow stopping wall to separate from the bottle mouth; the toggle switch is connected with the bottle cap extension surface and can pull the bottle cap extension surface; the bottle cap compression surface is connected with the toggle switch and is used for providing restoring force for the toggle switch so as to restore the bottle cap extension surface to the original position; the liquid outflow opening is positioned at the lower side of the extending surface of the bottle cap, and an opening is formed in the outer side wall of the bottle cap and is used for outflow of liquid when the inner side flow stopping wall of the bottle cap is separated from the bottle mouth. The bottle cap adopts a lever structure, realizes single-hand operation, is automatic in leakage prevention, is suitable for sealing a bottled liquid container which is frequently used, and is not suitable for sealing a container with an anti-theft function.
Disclosure of Invention
The invention aims to provide the twist-open cover with the containing groove, which aims to solve the problems that the container is easy to collapse, the neck of the container anti-theft ring is deformed and the like due to overlarge cover top pressure in the cover sealing process of the twist-open cover in the prior art, and can greatly reduce the problems of the container collapse, the neck of the container anti-theft ring deformation and the like caused by twisting the cover in the cover sealing process.
The invention further aims to solve the problems that the anti-theft function is easy to be lost or the product is spoiled unknowingly and serious reputation influence is caused to a product production enterprise in the prior art when the cover is opened, and provides the twist-open cover with the containing groove.
The torsion cover with the container groove is used for leak-proof sealing of the container opening, the torsion cover comprises a cover top and a cylindrical cover wall formed by downward extension of the outer edge of the cover top, an anti-theft ring is arranged at the lower part of the cover wall, a sealing gasket is arranged on the lower surface of the cover top, an inner sealing ring used for being abutted against the inner wall of the container opening and an outer sealing ring abutted against the outer wall of the container opening are integrally extended downwards at the outer periphery of the sealing gasket, a sealing groove with a downward opening is formed between the inner sealing ring and the outer sealing ring (the upper part of the outer side surface of the inner sealing ring forms the inner side wall of the sealing groove, the inner side surface of the outer sealing ring forms the outer side wall of the sealing groove), the container groove is arranged on the top surface of the sealing gasket corresponding to the upper side and the lower side of the sealing groove, when the torsion cover with the container groove covers the container opening, the inner side surface of the outer sealing ring is tightly attached to the outer wall of the container opening, the outer side surface of the inner sealing ring is tightly attached to the inner wall of the container opening, the bottom of the sealing groove is tightly attached to the upper edge of the container opening, and the cross section of the bottom of the container is reduced. The twisting cover is provided with the inner sealing ring and the outer sealing ring at the matching part of the container opening at the periphery of the sealing gasket, and a sealing groove for sleeving the container opening is formed between the two sealing rings, so that after the container opening enters the sealing groove, the inner side surface of the outer sealing ring (namely the outer groove wall of the sealing groove) is tightly clung to the outer wall of the container opening to form outer sealing, the outer side surface of the inner sealing ring (namely the inner groove wall of the sealing groove) is tightly clung to the inner wall of the container opening to form inner sealing, and the groove bottom of the sealing groove is tightly clung to the upper edge of the container opening to form upper sealing, and therefore, the twisting cover well seals the container; the sealing gasket is provided with the material containing groove on the top surface of the sealing gasket above the sealing groove, the material containing groove is arranged on the surface of the sealing gasket, which is contacted with the cover body, when the cover is twisted to cover the container, the cover is provided with downward pressure, and the sealing gasket generates a reaction force in interference, and a part of the reaction force can be deformed and absorbed by the material containing groove, so that the reaction force can not be fully acted on the container, thereby greatly reducing the bearing of the container, and greatly reducing the problems of container collapse, container anti-theft ring neck deformation and the like caused by twisting the cover in the cover sealing process.
Preferably, the bottom surface of the tank is arc-shaped, the center line of the cross section of the tank coincides with the center line of the cross section of the sealing groove, the width of the opening of the tank is 55-75% of the width of the sealing groove, and the depth of the tank is 35-65% of the width of the opening of the tank.
Preferably, the height of the cross section of the inner sealing ring is larger than that of the cross section of the outer sealing ring (namely, the downward extending length of the inner sealing ring is larger than that of the outer sealing ring), the lower part of the outer side surface of the inner sealing ring is convexly provided with an interference ring, and the distance between the interference ring and the bottom of the sealing groove is larger than the axial moving distance of the cover top when the anti-theft ring is opened by twisting the cover to break. The invention is provided with the interference ring in a protruding way at the lower part of the outer side surface of the inner sealing ring, the interference ring is a raised annular belt structure on the outer side surface of the inner sealing ring, and can play a role in strengthening sealing when the outer side surface of the inner sealing ring is clung to the inner wall of the container mouth.
The leakage angle of the twist-off cover is larger than the breakage angle of the anti-theft ring, wherein the leakage angle refers to the rotation angle of the twist-off cover when the twist-off cover is rotated to be opened until substances in the container begin to leak from a sealing position, and the breakage angle of the anti-theft ring refers to the rotation angle of the twist-off cover when the twist-off cover is rotated to be opened until the anti-theft ring is broken, namely, the substances in the container cannot leak from the sealing position before the anti-theft ring is broken, so that good sealing performance between the twist-off cover and the container is ensured under the complete state of the anti-theft ring.
Preferably, an annular conical wall with a small upper part and a large lower part is formed on the cover wall close to the cover top, the upper section of the conical wall clings to the outer sealing ring to form an outer sealing ring extrusion part, when the cover is twisted to cover the container mouth, the pressure of the outer sealing ring to the outer wall of the container mouth is larger than the pressure of the inner sealing ring to the inner wall of the container mouth, and the vertex angle of the conical wall is 25-48 degrees. The invention forms a ring-shaped conical wall with a small upper part and a large lower part on the cover wall close to the cover top, namely the upper section of the twist cover is of a structure with a small upper part and a large lower part, the cross section of the cover wall of the section is inclined, the outer sealing ring is extruded by the conical wall to form the extrusion part, so that the inner side surface of the outer sealing ring is tightly attached to the outer wall of the container opening after being extruded by the extrusion part, the pressure of the outer sealing ring to the outer wall of the container opening is higher than the pressure of the inner sealing ring to the inner wall of the container opening, the sealing of the outer sealing ring to the container opening is ensured, the problem that the sealing performance is poor in the traditional technology in the form of pressing the container opening through the cover top and the single-side (inner side) sealing ring is solved, and simultaneously, the twist cover is easy to separate from the container opening when the twist cover is opened, the problem that the twist cover is difficult to open due to the large friction force generated by the double sides when the cover top and the double-side (inner side and outer side) sealing ring is pressed by the traditional technology is avoided. The top angle is an included angle between conical walls at two sides of the top of the cover, the top angle is too small, the lateral extrusion force of the outer sealing ring to the container mouth is too large, and the opening force of the twist-open cover is easily caused to be too large; if the top angle is too large, the pressure of the outer sealing ring on the container mouth is too small, and the sealing performance is poor although the opening is easy.
Preferably, the inner side surface of the inner sealing ring is in transitional connection with the lower surface of the sealing gasket (namely, the bottom surface of the sealing gasket which is close to the inner sealing ring and does not extend downwards) through a compression-resistant cambered surface, and the radius of the compression-resistant cambered surface is 0.7 to 1.3 times of the height of the cross section of the inner sealing ring. The compression-resistant cambered surface is arranged between the inner side surface of the inner sealing ring and the lower surface of the sealing gasket, so that the compression resistance of the inner sealing ring can be remarkably improved, and the sealing effect of the interference ring on the inner wall of the container mouth is enhanced.
Preferably, a pressure reducing groove extending along the sealing groove is arranged on one side, close to the inner sealing ring, of the groove bottom of the sealing groove, the opening width of the pressure reducing groove is 10-25% of the groove bottom width of the sealing groove, and the depth of the pressure reducing groove is 15-30% of the groove bottom width of the sealing groove; the central line of the cross section of the decompression groove is parallel to the central line of the cross section of the sealing groove, the inner side groove wall of the decompression groove and the inner side groove wall at the bottom of the sealing groove are on the same cylindrical surface (namely, the inner side groove wall of the decompression groove is formed by extending the inner side groove wall of the sealing groove close to the bottom of the groove), and the bottom of the decompression groove is arc-shaped. The pressure reducing groove has the function of properly reducing the resistance of the inner sealing ring entering the container mouth, so that the phenomenon that the resistance is overlarge when the container mouth is covered by the twist-open cover with the container groove due to the existence of the interference ring and the compression-resistant cambered surface is avoided, and the container mouth is provided with the sealing gasket which is excessively extruded along the upper edge to cause wrinkles at the interference ring, so that the sealing performance of the container is seriously damaged. Although the resistance of the container mouth can be reduced by reducing the compression-resistant cambered surface when the cover is opened by twisting the container mouth with the containing groove, the influence on the sealing performance of the interference ring is larger, and the influence can be reduced to the minimum degree by arranging the decompression groove, and the crease at the interference ring is avoided, so that the container mouth is an ideal technical scheme; on the other hand, the size of the cross section of the decompression groove has a large influence on the sealing performance, and the oversize of the decompression groove not only influences the sealing of the top end of the container mouth, but also reduces the sealing performance of the interference ring, so that the decompression groove needs to be controlled within a reasonable range.
Preferably, the lower end of the outer side surface of the inner sealing ring is provided with a guide arc edge, and the upper edge of the guide arc edge is connected with the lower edge of the interference ring. The guiding arc edge plays a guiding role when the cover is twisted to be matched with the container mouth.
Preferably, the upper portion of the lid wall is provided with a plurality of inwardly punched internal pressure release openings along the lid wall circumference. The internal pressure release port is used for timely releasing gas or liquid in the container when the pressure in the container is overlarge, so that serious consequences caused by the fact that the cover is directly opened due to overlarge pressure in the container are avoided.
Preferably, the anti-theft ring is connected with the upper side of the cover wall through a bridge, two convex rings are arranged at the lower part of the cover wall, an annular groove is formed between the two convex rings, a plurality of strip-shaped cuts are formed in the annular groove along the circumferential direction of the cover wall, the cuts penetrate through the cover wall, the bridge is formed by the cover walls between adjacent cuts, and the cuts and the bridge between the adjacent cuts are arranged at the bottom of the annular groove. The notch and the bridge between the adjacent notches are arranged at the bottom of the annular groove, so that the notch and the bridge are all arranged at the concave position and cannot be contacted with the palm when the cover is turned and twisted, and the puncture and the palm after the fracture of the anti-theft ring (bridge fracture) are avoided.
Preferably, the bridge is provided with a notch, the notch is arranged along the circumference of the periphery of the cover wall, the width of the notch is smaller than the width of the notch, the notch on the bridge is one notch, the cross section of the notch is right-angled triangle, the right-angle side of the notch is level with the upper side edge of the notch, the depth of the notch is 40% to 60% of the thickness of the cover wall, and the width of the notch is 0.8 to 1.5 times of the depth of the notch. The notch is formed by removing a part of cover wall material in a cutting mode, and is different from a pressure groove structure formed by extrusion and the like, so that the wall thickness of the bridge is locally thinned and the structural strength is reduced due to the existence of the notch, and the stress concentration at the notch is concentrated when the cover is opened by twisting, so that the opening force of the twist cover can be greatly reduced, and the purpose of opening is facilitated. The right-angle edge of the notch is level with the upper side edge of the notch, so that the spikes after the bridge is broken by the rotating torsion cover are concentrated on the anti-theft ring, and the spikes and the palms after the bridge is broken can be avoided to the greatest extent.
The invention has the beneficial effects that the problems of container collapse and container anti-theft ring neck deformation easily caused by overlarge cap top pressure in the capping process of the twisting cap in the prior art are effectively solved, and the problems of container collapse, container anti-theft ring neck deformation and the like caused by the twisting cap in the capping process are greatly reduced. The twist-open cover with the containing groove has the characteristics of simple structure, good anti-theft sealing performance and convenient opening, and has high practical value.
Drawings
FIG. 1 is a schematic view of a twist cap with a receiving slot of the present invention;
FIG. 2 is a partial cross-sectional view of the twist-off cover of the present invention;
FIG. 3 is a cross-sectional view of another partial construction of the twist-off cover of the present invention;
FIG. 4 is a partial cross-sectional view of the invention as it would be when the lid is twisted open to close the container;
FIG. 5 is a cross-sectional view of another partial structure of the twist-on cap of the present invention for closing a container;
FIG. 6 is a partial cross-sectional view of the torsion cover of the present invention at the bridge;
fig. 7 is a schematic view showing a stressed state when the cover is twisted.
In the figure: 1. the cover top, the cover wall, the anti-theft ring, the sealing gasket, the container mouth, the inner sealing ring, the outer sealing ring, the sealing groove, the interference ring, the conical wall and the sealing ring are respectively arranged at the bottom of the container mouth, the container mouth and the container mouth respectively, wherein the sealing ring is arranged at the top, the cover wall, the anti-theft ring, the sealing gasket, the container mouth, the sealing gasket, the sealing ring, the sealing groove, the sealing ring, the interference ring and the conical wall respectively, the device comprises a pressing part 12, a compression-resistant cambered surface 13, a decompression groove 14, a guide cambered edge 16, an internal pressure release opening 17, a bridge 18, a convex ring 19, an annular groove 20, a notch 21 and a notch.
Detailed Description
Embodiments of the present invention will be further described below by way of examples with reference to the accompanying drawings.
Example 1
In the embodiment 1 shown in fig. 1 and 2, a twist-open cap with a container groove is used for leak-proof sealing of a container mouth, the twist-open cap comprises a cap top 1 and a cylindrical cap wall 2 formed by downward extending the outer edge of the cap top, a plurality of inward punched internal pressure release openings 16 are formed in the upper part of the cap wall along the circumferential direction of the cap wall, an anti-theft ring 3 is arranged at the lower part of the cap wall, a sealing gasket 4 is arranged on the lower surface of the cap top, an inner sealing ring 6 for abutting the inner wall of the container mouth 5 and an outer sealing ring 7 for abutting the outer wall of the container mouth are integrally extended downwards at the outer circumferential part of the sealing gasket, the height of the cross section of the inner sealing ring is larger than the height of the cross section of the outer sealing ring, an interference ring 10 (the left part of a dotted line in the figure) is convexly arranged at the lower part of the outer side surface of the inner sealing ring, and the distance between the interference ring and the bottom of the sealing groove is larger than the axial moving distance of the cap top when the twist-open cap breaks the anti-theft ring (namely the leakage angle of the twist-open cap is larger than the breaking angle of the anti-theft ring of the twist-open cap). The lower end of the outer side surface of the inner sealing ring is provided with a guide arc edge 15, and the upper edge of the guide arc edge is connected with the lower edge of the interference ring. A sealing groove 8 with a downward opening is formed between the inner sealing ring and the outer sealing ring, a containing groove 9 with a circular arc bottom surface is arranged on the top surface of the sealing gasket corresponding to the upper part and the lower part of the sealing groove, the center line of the cross section of the containing groove is overlapped with the center line of the cross section of the sealing groove, the width of the opening of the containing groove is 55% of the width of the sealing groove, and the depth of the containing groove is 35% of the width of the opening of the containing groove. When the cover is turned open and the container mouth is covered by the twist-open cover with the containing groove, the inner side surface of the outer sealing ring is clung to the outer wall of the container mouth, the outer side surface of the inner sealing ring is clung to the inner wall of the container mouth, the groove bottom of the sealing groove is clung to the upper edge of the mouth of the container, the cross section area of the containing groove is reduced, and the groove bottom of the containing groove is clung to the lower surface of the cover top.
Example 2
In the embodiment 2 shown in fig. 3, an annular conical wall 11 with a small upper part and a large lower part is formed on the cover wall close to the cover top, the vertex angle of the conical wall is 33 degrees, the upper section of the conical wall is tightly attached to the outer sealing ring to form an outer sealing ring extrusion part 12, and when the cover is twisted to cover the container mouth, the outer sealing ring is extruded by the conical wall extrusion part formed by deformation of the cover wall, so that the pressure of the outer sealing ring to the outer wall of the container mouth is higher than the pressure of the inner sealing ring to the inner wall of the container mouth. The inner side surface of the inner sealing ring is in transitional connection with the lower surface of the sealing gasket through a compression-resistant cambered surface 13, and the radius of the compression-resistant cambered surface is 1 time of the height of the cross section of the inner sealing ring. In this embodiment, the width of the opening of the material containing groove is 75% of the width of the sealing groove, and the depth of the material containing groove is 65% of the width of the opening.
In the embodiment 2, a decompression groove 14 extending along the sealing groove is arranged on one side of the groove bottom of the sealing groove, which is close to the inner sealing ring, wherein the opening width of the decompression groove is 18% of the groove bottom width of the sealing groove, and the depth of the decompression groove is 23% of the groove bottom width of the sealing groove; the center line of the cross section of the decompression groove is parallel to the center line of the cross section of the sealing groove, the inner side groove wall of the decompression groove and the inner side groove wall at the bottom of the sealing groove are on the same cylindrical surface, the bottom of the decompression groove is arc-shaped, and the rest is the same as the embodiment 1.
Example 3
In the embodiment 3 shown in fig. 6, the anti-theft ring is connected with the upper side of the cover wall through a bridge 17, two convex rings 18 are arranged at the lower part of the cover wall, an annular groove 19 is formed between the two convex rings, a plurality of strip-shaped cuts 20 are arranged in the annular groove along the circumferential direction of the cover wall, the cuts penetrate through the cover wall, the cover wall between the adjacent cuts forms the bridge, and the cuts and the bridge between the adjacent cuts are arranged at the bottom of the annular groove; the bridge is provided with a notch 21, the notch is arranged along the circumference of the periphery of the cover wall, the width of the notch is smaller than the width of the notch, the notch on the bridge is one, the cross section of the notch is right triangle, the right-angle side of the notch is level with the upper side edge of the notch, the depth of the notch is 52% of the thickness of the cover wall, the width of the notch is 1.15 times of the depth of the notch, and the rest is the same as the embodiment 1 or the embodiment 2.
The container mouth matching part with the containing groove is provided with the inner sealing ring and the outer sealing ring, and a sealing groove for sleeving the container mouth is formed between the two sealing rings, so that after the container mouth enters the sealing groove, the inner side surface of the outer sealing ring is tightly attached to the outer wall of the container mouth to form outer sealing, the outer side surface of the inner sealing ring is tightly attached to the inner wall of the container mouth to form inner sealing, the bottom of the sealing groove is tightly attached to the upper edge of the container mouth to form upper sealing (see fig. 5, the overlapping part in the drawing is a compression part of the sealing gasket in actual matching), and the twisting cover can well seal the container; the top surface of the sealing gasket above the sealing groove is provided with the containing groove, the containing groove is arranged on the surface of the sealing gasket, which is contacted with the cover body, when the cover is turned open to cover the container, the cover is provided with downward pressure F1, the counter force F2 (see figure 7) generated by interference of the sealing gasket can be partially absorbed by the deformation of the containing groove, so that the part of the counter force can not be fully acted on the container, thereby greatly reducing the bearing of the container, and greatly reducing the problems of container collapse, container anti-theft ring neck deformation and the like caused by the twisting of the cover in the cover sealing process. Meanwhile, the lower part of the outer side surface of the inner sealing ring is convexly provided with the interference ring, the interference ring is of a raised annular belt structure on the outer side surface of the inner sealing ring, the interference ring can play a role in strengthening sealing when the outer side surface of the inner sealing ring is clung to the inner wall of the container mouth, and the distance between the interference ring and the bottom of the sealing groove is larger than the axial moving distance of the cap top when the anti-theft ring is opened by twisting the cap, namely, in the initial stage of opening by twisting the cap, when the cap moves a certain distance in the axial direction but the anti-theft ring is not broken, the interference ring is clung to the inner wall of the container mouth all the time (see fig. 4, the state shown in fig. 4 is the leakage critical state of the container), so that the sealing between the inner sealing ring and the inner wall of the container mouth before the anti-theft ring is broken is ensured, and the problem that the appearance of the cap is intact and the anti-theft function of the container is lack or the product is unconsciously damaged, thereby causing serious influence on the product production enterprises can be avoided.
In addition to the above embodiments, the technical features or technical data of the present invention may be rearranged and combined within the scope of the claims and the description of the present invention to constitute new embodiments, which may be implemented without inventive effort by those skilled in the art, and thus, embodiments of the present invention not described in detail should be considered as embodiments of the present invention within the scope of the protection of the present invention.

Claims (7)

1. The twist-open cover with the container mouth is used for leak-proof sealing of the container mouth and is characterized by comprising a cover top (1) and a cylindrical cover wall (2) formed by downwards extending the outer edge of the cover top, wherein an anti-theft ring (3) is arranged at the lower part of the cover wall, a sealing gasket (4) is arranged on the lower surface of the cover top, an inner sealing ring (6) used for being abutted to the inner wall of the container mouth (5) and an outer sealing ring (7) used for being abutted to the outer wall of the container mouth are downwards integrally extended at the outer periphery of the sealing gasket, an opening downwards sealing groove (8) is formed between the inner sealing ring and the outer sealing ring, a container mouth (9) is arranged on the top surface of the sealing gasket corresponding to the upper part and the lower part of the sealing groove, when the twist-open cover with the container mouth is used for sealing the container mouth, the inner side surface of the outer sealing ring is tightly attached to the outer wall of the container mouth, the bottom of the sealing groove is tightly attached to the upper edge of the container mouth, the cross-sectional area of the container mouth is reduced, and the bottom of the container mouth is tightly attached to the lower surface of the cover top; an annular conical wall (11) with a small upper part and a large lower part is formed on the cover wall close to the cover top, the upper section of the conical wall clings to the outer sealing ring to form an outer sealing ring extrusion part (12), when the cover is twisted to cover the container mouth, the pressure of the outer sealing ring on the outer wall of the container mouth is higher than the pressure of the inner sealing ring on the inner wall of the container mouth, and the vertex angle of the conical wall is 25-48 degrees; the inner side surface of the inner sealing ring is in transitional connection with the lower surface of the sealing gasket through a compression-resistant cambered surface (13), and the radius of the compression-resistant cambered surface is 0.7 to 1.3 times of the height of the cross section of the inner sealing ring; a decompression groove (14) extending along the sealing groove is arranged on one side, close to the inner sealing ring, of the groove bottom of the sealing groove, the opening width of the decompression groove is 10-25% of the groove bottom width of the sealing groove, and the depth of the decompression groove is 15-30% of the groove bottom width of the sealing groove; the central line of the cross section of the decompression groove is parallel to the central line of the cross section of the sealing groove, the inner side groove wall of the decompression groove and the inner side groove wall at the bottom of the sealing groove are on the same cylindrical surface, and the bottom of the decompression groove is arc-shaped.
2. The twist-off cover with a receiving slot of claim 1, wherein the bottom surface of the receiving slot is arc-shaped, the center line of the cross section of the receiving slot coincides with the center line of the cross section of the sealing slot, the width of the opening of the receiving slot is 55% to 75% of the width of the sealing slot, and the depth of the receiving slot is 35% to 65% of the width of the opening of the receiving slot.
3. The twist-off cover with containing groove according to claim 1, characterized in that the height of the cross section of the inner sealing ring is larger than the height of the cross section of the outer sealing ring, the lower part of the outer side surface of the inner sealing ring is convexly provided with an interference ring (10), and the distance between the interference ring and the bottom of the sealing groove is larger than the axial moving distance of the cover top when the twist-off cover is opened and the anti-theft ring is broken.
4. The twist-off cover with holding tank as claimed in claim 1, wherein the lower end of the outer side surface of the inner sealing ring is provided with a guiding arc edge (15), and the upper edge of the guiding arc edge is connected with the lower edge of the interference ring.
5. The twist-off cap with receiving slot of claim 1 wherein the upper portion of the cap wall is provided with a plurality of inwardly die-cut internal pressure relief ports (16) circumferentially of the cap wall.
6. The twist-off cover with a receiving slot according to any one of claims 1-5, characterized in that the anti-theft ring is connected with the upper side of the cover wall by means of a bridge (17), the lower part of the cover wall is provided with two protruding rings (18), an annular groove (19) is formed between the two protruding rings, a plurality of elongated slits (20) are arranged in the annular groove along the circumferential direction of the cover wall, the slits penetrate the cover wall, the cover wall between adjacent slits forms the bridge, and the bridge between the slits and the adjacent slits is arranged at the bottom of the annular groove.
7. The twist-up cover with receiving slot of claim 6, wherein the bridge is provided with a notch (21), the notch is arranged along the circumference of the periphery of the cover wall, the width of the notch is smaller than the width of the notch, the notch on the bridge is one, the cross section of the notch is right triangle, the right-angle side of the notch is level with the upper side of the notch, the depth of the notch is 40% to 60% of the thickness of the cover wall, and the width of the notch is 0.8 to 1.5 times of the depth of the notch.
CN201810136020.XA 2018-02-09 2018-02-09 Twist-open cap with receiving slot Active CN110127190B (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201810136020.XA CN110127190B (en) 2018-02-09 2018-02-09 Twist-open cap with receiving slot

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CN110127190B true CN110127190B (en) 2023-06-09

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Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4423937B2 (en) * 2003-11-19 2010-03-03 株式会社吉野工業所 Refill container
ES2548289T3 (en) * 2007-06-05 2015-10-15 Tetra Laval Holdings & Finance S.A. Closure for a container of a pourable food product and method of production thereof
EP2241513B1 (en) * 2008-01-31 2013-08-07 Nihon Yamamura Glass Co., Ltd. Use of a cap for a container containing a carbonated beverage
US8430268B2 (en) * 2010-05-27 2013-04-30 David Weiss Lid having a circumferential rim with a plurality of annular ribs
CN102069948B (en) * 2010-11-25 2012-11-21 烟台海普制盖有限公司 Novel container sealing device, sealed container and production method of container sealing device
CN103620047A (en) * 2011-04-12 2014-03-05 波拉南特有限公司 Sealing and locking means for plastic containers and lids, and to containers using such locking means

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