CN110615174B - Packaging container with safety reminding structure - Google Patents
Packaging container with safety reminding structure Download PDFInfo
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- CN110615174B CN110615174B CN201810631631.1A CN201810631631A CN110615174B CN 110615174 B CN110615174 B CN 110615174B CN 201810631631 A CN201810631631 A CN 201810631631A CN 110615174 B CN110615174 B CN 110615174B
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- wall
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- opening
- cover
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- 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
- B65D41/3442—Threaded or like caps or cap-like covers provided with tamper elements formed in, or attached to, the closure skirt with rigid bead or projections formed on the tamper element and coacting with bead or projections on the container
Abstract
The invention discloses a packaging container with a safety reminding structure, which comprises a container body and a twist-off type unscrewing cover, wherein a concave pit is formed on the top of the unscrewing cover, the bottom surface of the concave pit is arched upwards to form a safety button, two convex rings are arranged at the lower part of the cover wall of the unscrewing cover, an annular groove is formed between the two convex rings, a U-shaped cutting seam is arranged at the groove bottom of the annular groove, the cover wall on the upper side of the cutting seam is inclined inwards to form a stamping opening penetrating through the cover wall, the cover wall between adjacent stamping openings forms a bridging, the cover wall below the stamping opening forms an anti-theft ring, and the anti-theft ring is connected with the cover wall above the stamping opening through the bridging. The invention effectively solves the problems that the packaging container in the prior art lacks a product quality safety reminding function and an operator is easy to be injured in the process of opening the cover of the packaging container in the prior art, greatly improves the safety of the packaging container in the using process and has high practical value.
Description
Technical Field
The invention relates to the technical field of food packaging containers, in particular to a packaging container with a safety reminding structure.
Background
The prior art food and beverage bottles generally employ twist-off lids which typically have a lid top and a lid top skirt and a synthetic resin gasket bonded to the inside of the lid top, with an anti-theft ring on the underside of the skirt connected to the skirt by a bridge. The sealing gasket is contacted with the container opening and has a certain compression amount by sleeving the sealing gasket into the container opening and applying certain pressure on the cover top, and the sealing gasket is pulled by the side edge of the cover and the thread on the opening of the packaging container, the anti-theft ring and the edge-curling seal of the opening of the packaging container, so that the unscrewing cover can be well sealed on the container and the sealing performance is ensured. When the anti-theft ring is opened, one hand holds the container, the other hand holds the container cover to rotate upwards in the thread loosening direction, the anti-theft ring is limited to the neck of the container opening after being rolled and sealed, the bridging connecting the side edge and the anti-theft ring is broken by twisting, and the cover is removed. Usually, a plurality of notches are formed at the lower end of the side edge of the unscrewing cover, a bridge is formed between the notches, the formed bridge is also longer, the bridge and the edge of the notch are basically exposed outside, a plurality of sharp breaking points can be formed after the bridge is twisted off, an operator is easily injured when the cover is rotated, and potential safety hazards exist. In addition, the safety of food and beverage is always an important concern of the industry, and the twist-off type unscrewing cap can verify whether the product is opened by people or not by judging whether the bridging is damaged or not, so that the anti-theft effect is achieved. However, the sealed product may be stored for a long time or in various aspects, and under various factors such as long-time temperature difference, collision, material performance degradation and the like, the original sealed product has a gas leakage problem, and at this time, whether the food is safe or not can not be judged according to the characteristic that the bridge is broken, so that the food safety problem may be caused. The packaging container with the unscrewing cover in the prior art does not have a food safety reminding function, and how to better help and remind consumers to pay attention to the safety of purchased products is always the direction of efforts in the industry.
On the other hand, the cover is sleeved into the opening of the container in the cover closing process, after a certain pressure is applied to the cover top, the thread forming cutter in the middle of the side edge of the cover and the sealing cutter at the lower anti-theft ring are rotated, the threads of the cover are formed according to the threads of the container opening, and the anti-theft ring of the cover is formed according to the neck structure of the anti-theft ring of the container opening. In order to ensure the sealing performance of the container after the container is covered, the container is often applied with a certain pressure on the top of the container during the sealing, so that the sealing of the container opening can be ensured only when the sealing gasket and the container opening have a certain magnitude of interference, but the problems of container collapse, deformation of the neck of the anti-theft ring of the container and the like can be caused by excessive top pressure of the container. The unscrewing cover cannot restore to an original state after being opened and bridged to break so as to play a role in theft prevention, but in the practical process, the opening part of the container cannot be completely consistent in forming, the anti-theft ring cannot be particularly attached to a convex ring of the container when being curled, so that the unscrewing cover firstly rotates for a certain angle when being opened, the anti-theft ring and the unscrewing cover firstly move upwards for a small end distance, the anti-theft ring is clamped by the convex ring, and the bridging of the unscrewing cover is broken only by continuously rotating the unscrewing cover; particularly, in a metal container, the cross section of a convex ring of which the neck of a container opening is used for limiting the upward movement of the anti-theft ring 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 being curled, and generally can rotate for a certain angle when the rotary cover is opened, so that a potential safety hazard exists, namely, the rotary cover rotates (or loosens) to a certain extent when the rotary cover is touched in the process of carrying and storing products, namely, the compression amount of a sealing gasket is reduced before a bridge is not broken, and at the moment, the quality guarantee period of the products can be greatly shortened due to the poor sealing property.
Disclosure of Invention
The invention aims to solve the problems that the packaging container in the prior art lacks a product safety reminding function and an operator is easy to hurt in the opening process, and provides the packaging container with the safety reminding structure, which can remind a consumer of safety and greatly improve the safety of the packaging container in the opening process.
Another object of the present invention is to provide a packaging container with a safety reminding structure to solve the problems of container collapse and deformation of the neck of the anti-theft ring of the container caused by excessive capping pressure during the capping process of the packaging container in the prior art, so that the problems of container collapse and deformation of the neck of the anti-theft ring of the container caused by the capping process of the packaging container can be greatly reduced.
The third purpose of the present invention is to provide a packaging container with a safety reminding structure, which is used for solving the problem that the quality guarantee period of the product is greatly shortened due to the poor sealing performance of the packaging container in the prior art, and has the characteristics of simple structure, good sealing performance and convenient opening.
The invention adopts a specific scheme for solving the technical problems that the packaging container with the safety reminding structure comprises a container body and a twist-off type unscrewing cover for sealing the opening part of the container, wherein a cylindrical container opening is formed on the packaging container, external threads are formed on the outer wall of the container opening, the unscrewing cover comprises a cover top and a cylindrical cover wall formed by downwards extending the outer edge of the cover top, internal threads matched with the external threads are arranged in the middle of the cover wall, a sealing gasket is arranged on the lower surface of the cover top, and the sealing gasket is abutted and sealed with the edge part of the container opening; the cover top is provided with a pit, the bottom surface of the pit is arched upwards to form a safety button, the lower part of the cover wall is provided with two convex rings which are parallel to each other and surround the cover wall, an annular groove is formed between the two convex rings, a plurality of U-shaped cutting seams are arranged at the groove bottom of the annular groove along the circumferential direction of the cover wall, the cover wall on the upper side of each U-shaped cutting seam inclines inwards to form a stamping opening which penetrates through the cover wall, the cover wall between every two adjacent stamping openings forms a bridging, the cover wall below the stamping opening forms an anti-theft ring, and the anti-theft ring is connected with the cover wall above the stamping opening through the bridging. The packaging container is provided with a pit at the top of a screw-on cover, an upward arc-shaped arch structure is arranged at the bottom of the pit, and the arch structure can sink to form a downward concave surface under the action of external atmospheric pressure when negative pressure is generated inside after products are vacuumized or heat-sealed and cooled, and the concave surface is always present in the shelf life of the products. When the sealing failure of the container causes the air to flow into the container or the food in the container is deteriorated to generate gas, so that the internal air pressure and the external air pressure are the same or the internal air pressure is greater than the external atmospheric pressure, the arch structure can be bounced to restore to the original state to form the structural characteristic that the safety button is arched upwards, at the moment, a consumer is reminded to pay attention, the commodity possibly has the quality safety problem and is not suitable for being purchased or eaten. On the other hand, two convex rings which are parallel to each other and surround the cover wall are arranged between the upper part of the unscrewing cover and the anti-theft ring, an annular groove is formed between the two convex rings, and the cutting seams for separating the anti-theft ring and the bridging bridges between the adjacent cutting seams are arranged at the groove bottom of the annular groove, so that the cutting seams and the bridging bridges are both positioned at the concave parts of the groove and are not easy to contact with the palm of an operator when the unscrewing cover is rotated, and the palm can be prevented from being injured by sharp pricks after the anti-theft ring is broken (namely the bridging bridges are broken). Meanwhile, the cover wall on the upper side of the U-shaped cutting seam is inclined inwards to form a punching opening (used for replacing a notch in the traditional process) penetrating through the cover wall, so that a spike formed when the bridging is broken can be extruded by the cover wall on the upper side of the U-shaped cutting seam when the unscrewing cover rotates, and the spike loses the sharpness to a certain extent (or the direction of the spike is consistent with the rotating direction through extrusion), so that the possibility of damaging the palm of an operator is greatly reduced. Therefore, the invention also solves the problem that an operator is easy to be injured in the process of opening the cover of the packaging container in the prior art, and greatly improves the safety of the packaging container in the using process.
Preferably, the concave pit and the safety button are circular, the diameter of the safety button is 11 mm to 34 mm, the arching height of the safety button is 0.2 mm to 0.8 mm and is lower than the depth of the concave pit, the container body is integrally formed by a single layer of metal material, the opening edge part of the container opening is formed by rolling and folding the single layer of metal material of the container body, and the top end of the opening edge part is arc-shaped. The container body is integrally formed by a single-layer metal material, the opening edge part of the container opening is formed by rolling and folding the single-layer metal material of the container body, the cross section of the opening edge part is similar to an ellipse, and the top end of the opening edge part is in a circular arc shape, so that the opening edge part is in contact with the sealing gasket for sealing.
Preferably, the number of the U-shaped cutting seams is 6-12, and the U-shaped cutting seams are uniformly arranged on the outer peripheral surface of the unscrewing cover; the bridge on be equipped with the nick, the nick set up along the circumference of lid wall periphery, the nick on the bridge is one, the cross section of nick is triangle-shaped, the base of triangle-shaped and the lower side parallel and level of punching press mouth, the maximum depth of nick does 40% to 60% of lid wall thickness, the notch width of nick is 0.7 to 1.3 times of the depth of nick. The notch is formed by removing a part of cover wall materials in a cutting mode, and is different from a notch pressing structure formed by extrusion and the like, on one hand, the existence of the notch enables the wall thickness of a bridge to be locally thinned and the structural strength to be reduced, on the other hand, the stress at the notch is concentrated when the unscrewing cover is opened, so that the opening force of the unscrewing cover can be greatly reduced, and the purpose of opening is facilitated. The bottom edge of the triangular notch groove is flush with the lower side edge of the stamping opening, so that the outer edge of the lower side edge of the stamping opening after the bridge is broken is a complete circle after the cover is rotated and unscrewed, namely the round outer edge has no sharp prick, and the palm can be prevented from being injured by the sharp prick after the bridge is broken to the maximum extent.
Preferably, an inner sealing ring for abutting against an inner wall of a mouth edge part of the container mouth and an outer sealing ring for abutting against an outer wall of the mouth edge part integrally extend downwards from the outer peripheral part of the sealing gasket, and a sealing groove with a downward opening is formed between the inner sealing ring and the outer sealing ring; the lower end of the outer side surface of the inner sealing ring is provided with a guide arc-shaped edge; the groove bottom of the sealing groove is matched with the top end of the opening edge part. The inner side surface (namely the outer side groove wall of the sealing groove) of the outer sealing ring is tightly attached to the outer wall of the container opening to form outer sealing, the outer side surface (namely the inner side groove wall of the sealing groove) of the inner sealing ring is tightly attached to the inner wall of the container opening to form inner sealing, and the groove bottom of the sealing groove is tightly attached to the top end of the opening edge part of the container opening to form upper sealing, so that the container can be well sealed by the unscrewing cover. The bottom of the sealing groove is matched with the top end of the opening edge part, namely the cross section of the bottom of the sealing groove is arc-shaped, so that the sealing performance of the container is improved.
Preferably, the top surface of the sealing gasket vertically corresponding to the sealing groove is provided with a material containing groove, the bottom surface of the material containing groove is arc-shaped, the central line of the cross section of the material containing groove is superposed with the central line of the cross section of the sealing groove, the opening width of the material containing groove is 55-75% of the width of the sealing groove, and the depth of the material containing groove is 35-65% of the opening width of the material containing groove; when the cover is screwed to seal 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 groove bottom of the sealing groove is tightly attached to the upper edge of the opening of the container, the cross-sectional area of the container groove is reduced, and the groove bottom of the container groove is close to the lower surface of the cover top. According to the invention, the material containing groove is arranged on the top surface of the sealing gasket above the sealing groove, and is arranged on the surface, which is contacted with the cover top, of the sealing gasket, when the cover is unscrewed to cover the container opening, downward pressure is generated when the cover is covered by the cover top, and the sealing gasket interferes to generate a reaction force, and part of the reaction force can be absorbed by the material containing groove in a deformed manner, so that the reaction force can not be completely acted on the container, the pressure bearing of the container is greatly reduced, and the problems of container collapse, container anti-theft ring neck deformation and the like caused in the container covering process are greatly reduced.
Preferably, the height of the cross section of the inner sealing ring is greater than that of the cross section of the outer sealing ring (that is, the length of the downward extension of the inner sealing ring is greater than that of the downward extension of the outer sealing ring), an interference ring is convexly arranged at the lower part of the outer side surface of the inner sealing ring, the distance between the interference ring and the bottom of the sealing groove is greater than the axial moving distance of the cover top when the unscrewing cover opening bridge is broken, and the upper edge of the guide arc-shaped edge is connected with the lower edge of the interference ring. The invention is characterized in that the lower part of the outer side surface of the inner sealing ring is convexly provided with an interference ring, the interference ring is an annular belt structure which is protruded on the outer side surface of the inner sealing ring, the interference ring can play a role of strengthening sealing when the outer side surface of the inner sealing ring is tightly attached to the inner wall of the container opening, because 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 unscrewing the cover, namely, in the initial stage of the rotary opening of the unscrewing cover, when the unscrewing cover moves a certain distance in the axial direction but the anti-theft ring is not broken, the interference ring is always tightly attached to the inner wall of the container opening, the sealing between the inner sealing ring and the inner wall of the container opening before the anti-theft ring is broken is ensured, thus, the rotary opening cover can be prevented from rotating (or loosening) to a certain degree when the unscrewing cover is unscrewed in the process of carrying and storing products, namely, the compression amount of the sealing gasket is reduced before the breakage of the bridging is not yet, the sealing performance is deteriorated, the shelf life of the product is greatly shortened, and the arc-shaped guide edge is beneficial to guiding the container opening into the sealing groove.
Preferably, an annular tapered 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 tapered wall is tightly attached to the outer sealing ring to form an outer sealing ring squeezing part, when the container opening is unscrewed and covered, the pressure of the outer sealing ring on the outer wall of the container opening is greater than the pressure of the inner sealing ring on the inner wall of the container opening, and the vertex angle of the tapered wall is 26-49 degrees. The invention forms a ring-shaped tapered wall with a small top and a big bottom on the cover wall close to the cover top, namely the upper section of the unscrewing cover is of a structure with a small top and a big bottom, the cross section of the cover wall of the section is in an inclined shape, the outer sealing ring is extruded by the tapered wall to form an extruding part, 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 extruding part, and the pressure of the outer sealing ring to the outer wall of the container opening is greater than that of the inner sealing ring to the inner wall of the container opening, thus ensuring the sealing of the outer sealing ring to the container opening, solving the problem of poor sealing performance of the container opening in the traditional process in the form of compressing the container opening by the cover top and a single-side (inner side) sealing ring, simultaneously avoiding the problem that the unscrewing cover is easy to come out from the container opening when the container is opened because the friction force generated by the cover top and the double-side (inner and outer side) sealing rings is greater when the container opening in the traditional process is opened, the opening of the packaging container is facilitated on the premise of ensuring the sealing. The top angle is an included angle between conical walls on two sides of the cover top, the top angle is too small, and the lateral extrusion force of the outer sealing ring to the container opening is too large, so that the opening force of the unscrewing cover is too large easily; if the vertex angle is too large, the pressure of the outer sealing ring on the container opening is too small, and although the opening is easy, the sealing performance is poor.
Preferably, the inner side surface of the inner sealing ring and the lower surface of the sealing gasket (i.e. the bottom surface of the sealing gasket which is close to the inner sealing ring and does not extend downwards) are in transition connection through a compression-resistant cambered surface, and the radius of the compression-resistant cambered surface is 0.7-1.3 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 obviously improved, and the sealing effect of the interference ring on the inner wall of the container opening is strengthened.
Preferably, a decompression 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 decompression groove is 11% -24% of the width of the groove bottom of the sealing groove, and the depth of the decompression groove is 16% -29% of the width of the groove bottom of the sealing groove; the center line of the cross section of the pressure reducing groove is parallel to the center line of the cross section of the sealing groove, the inner side groove wall of the pressure reducing groove and the inner side groove wall at the groove bottom of the sealing groove are on the same cylindrical surface (namely the inner side groove wall of the pressure reducing groove is formed by extending the inner side groove wall of the sealing groove close to the groove bottom), and the groove bottom of the pressure reducing groove is arc-shaped. The function of the pressure reducing groove is to properly reduce the resistance of the inner sealing ring entering the container opening, and avoid the serious damage to the sealing performance of the container caused by the excessive resistance when the container opening is unscrewed and sealed by the cover due to the existence of the interference ring and the pressure-resistant cambered surface and the wrinkle at the interference ring caused by the excessive squeezing of the sealing gasket at the upper edge of the opening part of the container. Although the resistance when the container mouth is capped by unscrewing the cap can be reduced by reducing the compression-resistant cambered surface, the influence on the sealing performance of the interference ring is large, the influence can be reduced to the minimum degree by arranging the pressure reduction groove, and meanwhile, the phenomenon that the interference ring is folded is avoided, so that the technical scheme is ideal; on the other hand, the size of the cross section of the pressure reducing groove has a great influence on the sealing performance, and the oversize pressure reducing 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 pressure reducing groove needs to be controlled within a reasonable range.
Preferably, the lower part of the annular conical wall is provided with a plurality of internal pressure release ports punched inwards along the circumferential direction of the cover wall, the cover wall at the lower side edge of the internal pressure release ports is bent inwards to form an inwards inclined plane structure, and an annular diffusion cavity is arranged between the inner wall of the unscrewing cover at the internal pressure release ports and the outer wall of the container port. The internal pressure release port is used for releasing gas or liquid in the container in time when the pressure in the container is overlarge, so that the serious result caused by direct flying of the unscrewing cover due to overlarge pressure in the container is avoided; the annular diffusion cavity can prevent substances in the container from concentrating on one point to be released, and reduce the impact force when the internal pressure is released.
The invention has the beneficial effects that: 1. it has solved prior art's packaging container effectively and has lacked product quality security warning function and prior art's packaging container is uncapping the easy injured problem of in-process operator, can carry out product quality security to the consumer and remind, improves the security of packaging container in the use greatly. 2. The problems that the container is easily collapsed and the neck of the anti-theft ring of the container is deformed due to overlarge capping pressure in the capping process of the packaging container in the prior art are solved, and the problems that the container is collapsed and the neck of the anti-theft ring of the container is deformed in the capping process of the packaging container are greatly reduced. 3. The problem of prior art's packaging container appear the leakproofness variation easily, lead to the product shelf life to shorten greatly is solved. The packaging container has the advantages of product quality safety reminding function, good anti-theft sealing performance and convenience in opening, and has high practical value.
Drawings
FIG. 1 is a schematic view of a structure of the cover of the present invention;
FIG. 2 is a schematic view of an overall structure of the packaging container of the present invention;
FIG. 3 is a partial cross-sectional view of the construction of the twist-off cap;
FIG. 4 is a cross-sectional view of another partial structure of the screw-off cap;
FIG. 5 is a partial cross-sectional view of the structure of the container mouth with the cap removed;
FIG. 6 is a cross-sectional view of another alternate embodiment of the structure during unscrewing of the cap to close the mouth of the container;
FIG. 7 is a partial cross-sectional view of the structure at the location of the swing-out cover bridge;
FIG. 8 is a schematic view of a force condition when the cap is unscrewed to close the mouth of the container;
fig. 9 is a schematic view of the whole structure of the packing container of the present invention in the working state (negative pressure state).
In the figure: 1. the anti-theft cap comprises a cap top, 2 parts of a cap wall, 3 parts of an anti-theft ring, 4 parts of a sealing gasket, 5 parts of a port edge part, 6 parts of an inner sealing ring, 7 parts of an outer sealing ring, 8 parts of a sealing groove, 9 parts of a material containing groove, 10 parts of an interference ring, 11 parts of a conical wall, 12 parts of an extrusion part, 13 parts of a compression-resistant arc surface, 14 parts of a pressure reducing groove, 15 parts of a guide arc edge, 16 parts of an inner pressure releasing port, 17 parts of a bridge, 18 parts of a convex ring, 19 parts of an annular groove, 20 parts of a U-shaped cutting seam, 21 parts of a stamping port, 22 parts of a notch groove, 23 parts of a pit, 24 parts of a safety button, 25 parts of an internal thread, 26 parts of a container body, 27 parts of a container port and 28 parts of a diffusion cavity.
Detailed Description
The following further describes embodiments of the present invention by way of examples, with reference to the accompanying drawings.
Example 1
In embodiment 1 shown in fig. 1 and 2, a packaging container with a safety reminding structure comprises a container body 26 and a twist-off type unscrewing cap for closing a container opening, wherein the container body is integrally formed by a single-layer metal material, a cylindrical container opening 27 is formed in the packaging container, an opening edge part of the container opening is formed by folding the single-layer metal material of the container body, and the top end of the opening edge part is in an arc shape. Be formed with the external screw thread on the outer wall of container mouth, unscrew the lid including caping 1 and the cylindric geyser wall 2 that constitutes by the outer fringe downwardly extending of this caping, caping middle part be equipped with the internal thread 25 of external screw thread adaptation, the lower surface of caping is equipped with sealed 4, and sealed 5 butts of mouth edge portion with the container mouth are sealed, the downward integrative extension of the peripheral part of sealed peripheral part has the interior sealing ring 6 that is used for with the mouth edge portion inner wall butt of container mouth and the outer seal ring 7 with mouth edge portion outer wall butt, constitutes opening decurrent seal groove 8 between interior sealing ring and the outer seal ring, the tank bottom of seal groove with the top looks adaptation of mouth edge portion. A concave pit 23 is formed on the top of the cover, the depth of the concave pit is 0.7 mm, the bottom surface of the concave pit is arched upwards to form a safety button 24, the concave pit and the safety button are both circular, the diameter of the safety button is 11 mm, and the arched height of the safety button is 0.2 mm; the lower part of the cover wall is provided with two convex rings 18 which are parallel to each other and surround the cover wall, an annular groove 19 is formed between the two convex rings, 9U-shaped cutting seams 20 are arranged at the groove bottom of the annular groove along the circumferential direction of the cover wall, the U-shaped cutting seams are uniformly arranged on the outer circumferential surface of the unscrewing cover, the cover wall on the upper side of each U-shaped cutting seam inclines inwards to form a stamping opening 21 which penetrates through the cover wall, the cover wall between the adjacent stamping openings forms a bridging 17, the cover wall below the stamping opening forms an anti-theft ring 3, and the anti-theft ring is connected with the cover wall above the stamping opening through the bridging.
An annular tapered 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 tapered wall is tightly attached to the outer sealing ring to form an outer sealing ring extrusion part 12, when the container opening is unscrewed and covered, the pressure of the outer sealing ring on the outer wall of the container opening is greater than the pressure of the inner sealing ring on the inner wall of the container opening, and the vertex angle of the tapered wall is 39 degrees. The bridge of this embodiment is provided with a notch 22 (see fig. 7), the notch is arranged along the circumferential direction of the periphery of the cover wall, the notch on the bridge is one, the cross section of the notch is triangular, the bottom side of the triangular is flush with the lower side of the punching opening, the maximum depth of the notch is 50% of the thickness of the cover wall, and the width of the notch is 0.95 times of the depth of the notch. The lower part of the annular conical wall is provided with a plurality of internal pressure release ports 16 which are punched inwards along the circumferential direction of the cover wall, the cover wall at the lower side edge of the internal pressure release ports is bent inwards to form an inwards inclined plane structure, and an annular diffusion cavity 28 is arranged between the inner wall of the unscrewing cover at the internal pressure release ports and the outer wall of the container port.
Example 2
In embodiment 2 shown in fig. 3, a material containing groove 9 is provided on the top surface of the sealing gasket corresponding to the upper and lower sides of the sealing groove, the bottom surface of the material containing groove is arc-shaped, the center line of the cross section of the material containing groove coincides with the center line of the cross section of the sealing groove, the opening width of the material containing groove is 55% of the width of the sealing groove, and the depth of the material containing groove is 35% of the opening width of the material containing groove. In the embodiment, the height of the cross section of the inner sealing ring is greater than that 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 on 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 greater than the axial moving distance of the cover top when the unscrewing cover opens the bridge and is broken (namely, the leakage angle of the unscrewing cover is greater than the breakage angle of the anti-theft ring of the unscrewing cover). The lower extreme of the lateral surface of interior sealing ring is equipped with direction arc limit 15, the last edge on direction arc limit is connected with the lower limb of interference ring. When the cover is screwed to cover the container opening (see figure 6), 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 groove bottom of the sealing groove is tightly attached to the upper edge of the opening of the container, the cross-sectional area of the container groove is reduced, and the groove bottom of the container groove is tightly attached to the lower surface of the cover top. The depth of the recess in this example is 1.2 mm, the diameter of the safety button is 34 mm, and the height of the arch of the safety button is 0.8 mm, the rest being the same as in example 1.
Example 3
In embodiment 3 shown in fig. 4, the inner side surface of the inner seal ring and the lower surface of the seal packing are transitionally connected by the compression arc surface 13 having a radius 0.95 times the height of the cross section of the inner seal 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 18% of the width of the groove bottom of the sealing groove, and the depth of the decompression groove is 23% of the width of the groove bottom of the sealing groove; the center line of the cross section of the pressure reducing groove is parallel to the center line of the cross section of the sealing groove, the inner side groove wall of the pressure reducing groove and the inner side groove wall at the groove bottom of the sealing groove are on the same cylindrical surface, and the groove bottom of the pressure reducing groove is arc-shaped. The opening width of the material accommodating groove in this embodiment is 75% of the width of the sealing groove, and the depth of the material accommodating groove is 65% of the opening width of the material accommodating groove, and the rest is the same as that in embodiment 1 or embodiment 2.
The packaging container of the invention is provided with a pit at the top of the unscrewing cover, and the bottom of the pit is provided with an upward arc-shaped arch structure, and the arch structure can be sunken to form a downward concave surface under the action of external atmospheric pressure when negative pressure is generated inside after the product is vacuumized or the product is subjected to heat-sealing cooling (see figure 9). When the sealing failure of the container causes the air to flow into the container or the food in the container is deteriorated to generate gas, so that the internal air pressure and the external air pressure are the same or the internal air pressure is greater than the external atmospheric pressure, the arch structure can be bounced to restore to the original state to form the structural characteristic that the safety button is arched upwards, at the moment, a consumer is reminded to pay attention, the commodity possibly has the quality safety problem and is not suitable for being purchased or eaten. In addition, two convex rings which are parallel to each other and surround the cover wall are arranged between the upper part of the unscrewing cover and the anti-theft ring, an annular groove is formed between the two convex rings, and the cutting seams for separating the anti-theft ring and the bridging bridges between the adjacent cutting seams are arranged at the groove bottom of the annular groove, so that the cutting seams and the bridging bridges are positioned at the concave parts of the groove when the unscrewing cover is rotated and are not easy to contact with the palm of an operator, and the palm can be prevented from being injured by sharp pricks after the anti-theft ring is broken (namely the bridging bridges are broken). On the other hand, the cover wall on the upper side of the U-shaped cutting seam is inclined inwards to form a punching opening (used for replacing a notch in the traditional process) penetrating through the cover wall, so that a spike formed when the bridging is broken can be extruded by the cover wall on the upper side of the U-shaped cutting seam when the unscrewing cover rotates, and the spike loses the sharpness to a certain extent (or the direction of the spike is consistent with the rotating direction through extrusion), so that the possibility of damaging the palm of an operator is greatly reduced. Therefore, the problem that an operator is easily injured in the process of opening the cover of the unscrewing cover in the prior art is solved, and the safety of the unscrewing cover in the using process is greatly improved. In addition, the container mouth matching part on the periphery of the sealing gasket of the unscrewing cover is provided with an inner sealing ring and an outer sealing ring, a sealing groove for being sleeved in 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 clings to the outer wall of the container mouth to form outer sealing, the outer side surface of the inner sealing ring clings to the inner wall of the container mouth to form inner sealing, and the groove bottom of the sealing groove clings to the upper edge of the container mouth to form upper sealing (see figure 6, the overlapping part in the figure is a compression part of the sealing gasket during actual matching), so that the unscrewing cover can well seal the container; the top surface of the sealing gasket above the sealing groove is provided with a material containing groove which is arranged on the contact surface of the sealing gasket and the cover body, when the cover is unscrewed to cover the container opening, downward pressure F1 is generated when the cover is covered, and a reaction force F2 (shown in figure 8) generated by interference of the sealing gasket is generated, and part of the reaction force can be absorbed by the material containing groove in a deformation mode, so that the reaction force can not be completely acted on the container, the pressure bearing of the container is greatly reduced, and the problems of container collapse, container anti-theft ring neck deformation and the like caused in the cover sealing process of the container are greatly reduced. 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 an annular belt structure which is protruded on the outer side surface of the inner sealing ring, the interference ring can play a role of strengthening sealing when the outer side surface of the inner sealing ring is tightly attached to the inner wall of the container opening, because 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 unscrewing the cover, namely, in the initial stage of the rotation opening of the unscrewing cover, when the unscrewing cover moves a certain distance in the axial direction but the anti-theft ring is not broken, the interference ring is always tightly attached to the inner wall of the container opening (see figure 5, the state shown in figure 5 is the leakage critical state of the container), the sealing between the inner sealing ring and the inner wall of the container opening before the anti-theft ring is broken is ensured, so that the unscrewing cover is prevented from rotating (or loosening) to a certain degree when the unscrewing cover is touched in the processes of carrying and storing products, namely, the compression amount of the sealing gasket is reduced before the bridging is not broken, so that the sealing performance is deteriorated, and the shelf life of the product is greatly shortened.
In addition to the above embodiments, the technical features or technical data of the present invention may be reselected and combined to form new embodiments within the scope of the claims and the specification of the present invention, which are all realized by those skilled in the art without creative efforts, and thus, the embodiments of the present invention not described in detail should be regarded as specific embodiments of the present invention and are within the protection scope of the present invention.
Claims (3)
1. A packaging container with a safety reminding structure comprises a container body (26) and a twist-off type unscrewing cap used for sealing the opening of the container, wherein a cylindrical container opening (27) is formed in the packaging container, external threads are formed on the outer wall of the container opening, the twisting cap is characterized in that the unscrewing cap comprises a cap top (1) and a cylindrical cap wall (2) formed by downward extending of the outer edge of the cap top, internal threads (25) matched with the external threads are arranged in the middle of the cap wall, a sealing gasket (4) is arranged on the lower surface of the cap top and is in butt joint sealing with a rim part (5) of the container opening, a pit (23) is formed in the cap top, a safety button (24) is formed by upward arching of the bottom surface of the pit, two convex rings (18) which are parallel to each other and surround the cap wall are arranged on the lower portion of the cap wall, an annular groove (19) is formed between the two convex rings, and a plurality of U-shaped cutting seams (20) are arranged on the groove bottom of the annular groove along the circumferential direction of the cap wall, the cover wall on the upper side of the U-shaped cutting seam inclines inwards to form a stamping opening (21) penetrating through the cover wall, the cover wall between adjacent stamping openings forms a bridge (17), the cover wall below the stamping opening forms an anti-theft ring (3), and the anti-theft ring is connected with the cover wall above the stamping opening through the bridge; an annular tapered 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 tapered wall is tightly attached to the outer sealing ring to form an outer sealing ring extrusion part (12), when the container opening is unscrewed and covered, the pressure of the outer sealing ring to the outer wall of the container opening is greater than the pressure of the inner sealing ring to the inner wall of the container opening, and the vertex angle of the tapered wall is 26-49 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 0.7-1.3 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 11% -24% of the width of the groove bottom of the sealing groove, and the depth of the decompression groove is 16% -29% of the width of the groove bottom of the sealing groove; the center line of the cross section of the pressure reducing groove is parallel to the center line of the cross section of the sealing groove, the inner side groove wall of the pressure reducing groove and the inner side groove wall at the groove bottom of the sealing groove are on the same cylindrical surface, and the groove bottom surface of the pressure reducing groove is arc-shaped; an inner sealing ring (6) which is used for being abutted against the inner wall of the opening edge part of the container opening and an outer sealing ring (7) which is abutted against the outer wall of the opening edge part are integrally extended downwards from the outer peripheral part of the sealing gasket, and a sealing groove (8) with a downward opening is formed between the inner sealing ring and the outer sealing ring; the lower end of the outer side surface of the inner sealing ring is provided with a guide arc-shaped edge (15), and the bottom of the sealing groove is matched with the top end of the opening edge part; a material containing groove (9) is arranged on the top surface of the sealing gasket vertically corresponding to the sealing groove, the bottom surface of the material containing groove is arc-shaped, the central line of the cross section of the material containing groove is overlapped with the central line of the cross section of the sealing groove, the opening width of the material containing groove is 55-75% of the width of the sealing groove, and the depth of the material containing groove is 35-65% of the opening width of the material containing groove; when the cover is screwed to seal 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 opening of the container, the cross-sectional area of the material containing groove is reduced, and the bottom of the material containing groove is tightly attached to the lower surface of the cover top; the container comprises a container body, a concave pit, a safety button, a container opening and a container opening, wherein the concave pit and the safety button are circular, the diameter of the safety button is 11-34 mm, the arching height of the safety button is 0.2-0.8 mm and is lower than the depth of the concave pit, the container body is integrally formed by a single layer of metal material, the opening edge part of the container opening is formed by rolling and folding the single layer of metal material of the container body, and the top end of the opening edge part is arc-shaped; the number of the U-shaped cutting seams is 6 to 12, and the U-shaped cutting seams are uniformly arranged on the peripheral surface of the unscrewing cover; the bridge on be equipped with tongue (22), the tongue set up along the circumference of lid wall periphery, the tongue on the bridge is one, the cross section of tongue is triangle-shaped, the base of triangle-shaped and the lower side parallel and level of punching press mouth, the maximum depth of tongue is 40% to 60% of lid wall thickness, the notch width of tongue is 0.7 to 1.3 times of the tongue depth.
2. The packaging container with the safety reminding structure as claimed in claim 1, wherein the height of the cross section of the inner sealing ring is larger than that of the cross section of the outer sealing ring, an interference ring (10) 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 unscrewing cap opening bridge is broken; the upper edge of the guide arc-shaped edge is connected with the lower edge of the interference ring.
3. The packaging container with the safety reminding structure as claimed in claim 1, wherein the lower part of the annular conical wall is provided with a plurality of inward-stamped internal pressure release openings (16) along the circumferential direction of the cover wall, the cover wall at the lower side edge of the internal pressure release openings is bent inwards to form an inward-inclined slope structure, and an annular diffusion cavity (28) is arranged between the inner wall of the screwed cover at the internal pressure release openings and the outer wall of the container opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631631.1A CN110615174B (en) | 2018-06-19 | 2018-06-19 | Packaging container with safety reminding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810631631.1A CN110615174B (en) | 2018-06-19 | 2018-06-19 | Packaging container with safety reminding structure |
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| CN110615174A CN110615174A (en) | 2019-12-27 |
| CN110615174B true CN110615174B (en) | 2022-05-06 |
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| CN201810631631.1A Active CN110615174B (en) | 2018-06-19 | 2018-06-19 | Packaging container with safety reminding structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11952164B1 (en) | 2012-08-10 | 2024-04-09 | Powercan Holding, Llc | Resealable container lid and accessories including methods of manufacture and use |
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| CN110615174A (en) | 2019-12-27 |
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