CN111137550A - High-sealing packing container with strong adaptability - Google Patents
High-sealing packing container with strong adaptability Download PDFInfo
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- CN111137550A CN111137550A CN201811308402.2A CN201811308402A CN111137550A CN 111137550 A CN111137550 A CN 111137550A CN 201811308402 A CN201811308402 A CN 201811308402A CN 111137550 A CN111137550 A CN 111137550A
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- wall
- cover
- sealing ring
- groove
- opening
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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
- B65D41/02—Caps or cap-like covers without lines of weakness, tearing strips, tags, or like opening or removal devices
- B65D41/04—Threaded or like caps or cap-like covers secured by rotation
- B65D41/0407—Threaded or like caps or cap-like covers secured by rotation with integral sealing means
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- Mechanical Engineering (AREA)
- Closures For Containers (AREA)
Abstract
The invention discloses a high-sealing packaging container with strong adaptability, which comprises a container body and a twist cover, wherein an external thread is formed on the outer wall of a container opening, an internal thread matched with the external thread is arranged on the cover wall of the twist cover, an inner sealing ring and an outer sealing ring are integrally extended downwards on the outer peripheral part of an upper sealing gasket of the twist cover, a V-shaped groove with a downward opening is formed between the inner sealing ring and the outer sealing ring, an arc bottom is formed at the bottom of the V-shaped groove close to the cover top, and the width of the arc bottom is smaller than the wall thickness of the edge of the container opening; when the V-shaped groove seals the opening edge part of the packaging container, an isolation cavity is formed between the arc-shaped bottom of the V-shaped groove and the opening edge part. The packaging container effectively solves the problems of poor sealing performance and poor guidance performance of the twist-off cover sealing gasket of the packaging container in the prior art, can meet the requirements of the sealing performance and the guidance performance of the sealing gasket, can adapt to container openings of various structures, and has high practical value.
Description
Technical Field
The invention relates to the technical field of packaging containers, in particular to a high-sealing packaging container with strong adaptability.
Background
Food safety has always been an important concern in the industry, and the good sealing properties of food packaging containers ensure that the food is safe after storage. The quality of the sealing performance is determined by the matching condition of the material and the shape of the sealing gasket of the cover in the packaging container and the opening (a can opening, a bottle opening and the like) of the container. At present, a flat rubber cushion, an L-shaped cushion or a U-shaped cushion is mostly adopted as a sealing cushion on a common packaging container cover. After the flat rubber pad is matched with the tank opening for sealing the tank, the top of the tank opening is in compression interference with the rubber pad to ensure sealing (see figure 12), which is called top sealing in the industry; after the L-shaped pad is matched with the tank opening for sealing the tank, the top and the inner side of the tank opening are in compression interference with the rubber pad to ensure sealing (see figure 13), which is called as top sealing and inner side sealing in the industry; after the U-shaped pad and the tank opening are matched for sealing the tank, the top, the outer side and the inner side of the tank opening are compressed and interference-sealed with the rubber pad (see figure 14), the sealing is better, and the sealing is called as triple sealing in the industry: top seal + outside seal + inside seal. Under the same tank height and the same tank sealing parameters, the three rubber cushions can ensure the sealing performance, and the opening torque U-shaped cushion is larger than the L-shaped cushion and is larger than the flat rubber cushion as can be seen from the compression amount of the rubber cushions; when the height of the tank is lower (more than 0.3mm lower than the normal tank height), the flat rubber gasket is completely separated from the tank opening under the same tank sealing parameters, and the sealing (top sealing) is invalid; the L-shaped pad is basically separated from the tank opening, the top seal is invalid, the compression amount of the inner side rubber sealing pad is almost zero, and the L-shaped pad and the tank opening can be considered as equivalent invalid; the top of the U-shaped pad is separated from the tank opening, the inner side and the outer side of the U-shaped pad are still in contact with the tank opening, the top seal fails, and the inner side seal and the outer side seal can also be kept; when the tank mouth is out of round, larger or smaller, the flat rubber cushion has stronger sealing adaptability but no good guiding function, so that the cover is easily sleeved in the center and deviates greatly, and the cover is inclined; although the L-shaped rubber pad and the U-shaped rubber pad have a certain inner side sealing and guiding function, when a tank opening is out of round and the tank opening is larger or smaller, the cover is easy to be unsmooth (the tank opening is difficult to enter the rubber pad), and the cover is damaged when the cover is sealed. In summary, the flat rubber pad, the L-shaped pad or the U-shaped pad on the lid of the packaging container in the prior art all have the problem of poor sealing or poor guiding performance in different degrees under different working conditions.
On the other hand, the bridge on the twist cover of the packaging container in the prior art is generally rectangular and is vertically connected with the anti-theft ring on the twist cover, when the cover body is rotated, the bridge is broken under the action of torsion (transverse shearing force) generated by rotation of the cover body, namely, only when the bridge is broken, the twist cover can be rotated to open the packaging container. The rectangular bridging structure in vertical connection has the advantages that after the rectangular bridging structure is subjected to large transverse shearing force, the material is subjected to yielding fracture, the fracture point is basically in the middle of the bridging (see figure 11), the torsion required during twisting off is large, the torsion required for rotating the cover body after fracture is suddenly reduced, the hand holding the cover body is forced to rotate at an angle along with the cover body quickly because the force is not removed soon, the opening difficulty of a packaging container is increased, the bridging and the edge of the cut opening are basically exposed outside, a plurality of sharp fracture points can be formed after the bridging is twisted off, and the hand stopping and rotating along with the cover body quickly is easily scratched by an anti-theft ring or a sharp object on a bottle body, so that great potential safety hazards exist.
Disclosure of Invention
The invention aims to solve the problems of poor sealing performance and poor guidance performance of a twist-off cap sealing gasket of a packaging container in the prior art, and provides a high-sealing-performance packaging container with strong adaptability, which can simultaneously meet the requirements of the sealing performance and the guidance performance of the twist-off cap sealing gasket.
Another object of the present invention is to provide a highly sealable packaging container with high adaptability, which solves the problems of the prior art that the twist-off cap of the packaging container requires a large opening force during the cap opening process and that an operator is easily injured, and which requires a small opening force and can greatly improve the safety of the packaging container during the opening process.
The invention adopts the specific scheme that the high-sealing packaging container with strong adaptability comprises a container body and a twist cover, wherein a cylindrical container opening is formed on the container body, an external thread is formed on the outer wall of the container opening, a section of opening edge part which is smooth inside and outside is formed at the top end of the container opening, the twist cover comprises a cover top and a cover wall formed by downward extension of the outer edge of the cover top, an internal thread matched with the external thread is formed on the cover wall, a sealing gasket is arranged on the lower surface of the cover top, two concentric inner sealing rings and outer sealing rings are integrally extended downwards on the peripheral part of the sealing gasket, the outer wall of each inner sealing ring and the inner wall of each outer sealing ring are obliquely arranged, a V-shaped groove with a downward opening is formed between each inner sealing ring and the outer sealing ring, the opening angle α of the V-shaped groove is 30-40 degrees, the included angles between the inner wall and the center line of the V-shaped groove are equal, an arc-shaped bottom is formed at the bottom of the V-shaped groove close to the cover top, the groove bottom is provided with an arc-shaped bottom, the groove close to the opening of the outer sealing ring, the outer sealing ring is provided with an arc-shaped groove, the groove is provided with the sealing gasket, the sealing gasket is provided with the sealing groove, the sealing gasket, the sealing groove, the sealing gasket is provided with the sealing groove, the sealing gasket is provided with the sealing gasket, the sealing groove, the sealing gasket is provided with the sealing groove, the.
Preferably, the top of the opening edge part is arc-shaped or trapezoid with narrow top and wide bottom, an included angle between inclined planes at two sides of the trapezoid is matched with the opening angle of the V-shaped groove, and the width of the top edge of the trapezoid is greater than that of the arc-shaped bottom. The top of the opening edge part is arc-shaped or trapezoid with narrow top and wide bottom, which is beneficial to being arranged in the V-shaped groove of the sealing gasket, and the included angle between the inclined planes at the two sides of the trapezoid is matched with the opening angle of the V-shaped groove, thereby being beneficial to improving the sealing performance of the container; the width of the top edge of the trapezoid is larger than that of the arc bottom of the V-shaped groove, so that an isolation cavity can be formed between the arc bottom of the V-shaped groove and the opening edge part, and the sealing performance of the container is improved.
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 (namely, the length of the downward extension of the inner sealing ring is greater than that of the downward extension of the outer sealing ring), the inner wall of the inner sealing ring and the outer wall of the outer sealing ring are both perpendicular to the cover top, and arc-shaped guide surfaces are arranged between the lower ends of the inner sealing ring and the outer sealing ring and the groove wall of the V-shaped groove. The inner sealing ring and the outer sealing ring have enough heights, namely when the twist cover moves a certain distance in the axial direction but the anti-theft ring is not broken, the inner sealing ring and the outer sealing ring have enough lengths to be attached to the inner wall and the outer wall of the opening edge part, and sealing between the inner sealing ring and the outer sealing ring and the inner wall and the outer wall of the opening edge part before the twist cover is not opened (the anti-theft ring is not broken) is ensured; the arc-shaped guide surface plays a role in guiding when the opening edge part of the container enters the V-shaped groove.
Preferably, the height of the cross section of the inner sealing ring is the same as that of the cross section of the outer sealing ring, the inner wall of the inner sealing ring and the outer wall of the outer sealing ring are perpendicular to the cover top, arc-shaped guide surfaces are arranged between the lower ends of the inner sealing ring and the outer sealing ring and the groove wall of the V-shaped groove, and the groove walls on two sides of the V-shaped groove are of symmetrical structures.
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 extrusion part, when the cover is unscrewed to seal the container opening, the pressure of the outer sealing ring on the outer wall of the edge part of the container opening is greater than the pressure of the inner sealing ring on the inner wall of the edge part of the container opening, and the vertex angle of the tapered wall is 20-40 degrees. According to the invention, the annular tapered wall with a small upper part and a large lower part is formed on the cover wall close to the cover top, namely the upper section of the twist cover is of a tapered 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 tapered wall to form the extruding part, so that the inner side surface of the outer sealing ring is tightly attached to the outer wall of the opening edge part of the container after being extruded by the extruding part, and the pressure of the outer sealing ring to the outer wall of the opening edge part of the container is greater than that of the inner sealing ring to the inner wall of the opening edge part of the container, thus; meanwhile, the extruding part of the invention is in a conical structure with a small upper part and a large lower part, so that the twist cover is easy to fall off from the container opening when the twist cover is opened, the problem that the twist cover is difficult to open due to large friction force generated on two sides when the twist cover is opened in the mode that the U-shaped pad compresses the container opening through the cover top, the inner side and the outer side in the traditional process is solved, and the twist cover is convenient to open on the premise of ensuring sealing.
Preferably, the bridge is an obliquely arranged equal-width structure, and one end of the bridge, which is close to the cover top, is taken as a reference, and the end, connected with the anti-theft ring, of the bridge is deviated towards the right side; an upper acute angle is formed between the right side of the upper end of the bridge and the cut on the right side of the bridge, and a lower acute angle is formed between the left side of the lower end of the bridge and the cut on the left side of the bridge. The bridge between the connecting cover body and the anti-theft ring is designed to be in inclined connection (the whole bridge is in a diamond shape), an upper acute angle is formed between the right side of the upper end of the bridge and the notch on the right side of the bridge, a lower acute angle is formed between the left side of the lower end of the bridge and the notch on the left side of the bridge, and stress concentration points are formed at the corners of the upper acute angle and the lower acute angle, so that the upper acute angle and the lower acute angle are easily torn at the. The anti-theft ring is clamped after rotating a small angle when the twist cover is opened, the cover body continues to rotate anticlockwise, the bridge is firstly pulled to the position vertical to the anti-theft ring, the upper part of the bridge is then inclined to the right and then is fractured, the bridge fracture needs a process, and the bridge fracture cannot be fractured suddenly like the bridge in the prior art. In addition, the bridge is formed into an inclined structure, only the bridge deforms when the bridge is straightened, the required torsion is small, the bridge starts to crack when the bridge is straightened due to the stress concentration point at the acute angle part of the bridge, and the bridge is completely cracked after the bridge is rotated, so that the bridge cracking process is also a gradual change process, the torsional force of the bridge is obviously smaller than that of the conventional scheme, and the buffer function is achieved.
Preferably, the included angle between the central line of the bridge and the horizontal plane is 45-75 degrees; the bridge is provided with an upper pre-split opening at the connecting part of the upper acute angle, the upper pre-split opening extends along the circumferential direction of the cover wall, the opening of the upper pre-split opening is communicated with the notch, and the length of the upper pre-split opening in the circumferential direction of the cover wall is 10-20% of the width of the bridge. The pre-splitting opening is arranged at the connecting part of the bridge and the upper acute angle, so that the force required for tearing the upper part of the bridge when the cover rotates is smaller, and the cover can be opened more conveniently by twisting. Meanwhile, the pre-split is arranged at the connecting part of the bridge and the upper acute angle, so that the upper end of the bridge can be ensured to be firstly broken, the broken points of the bridge are consistent and neat, and the broken residual sections of the bridge are all left on one side of the anti-theft ring due to the fact that the upper end of the bridge is firstly broken, and the repeated use of the cover is facilitated.
Preferably, the bridge is formed with a lower pre-split at the connection with the lower acute angle, the lower pre-split extends along the circumferential direction of the cover wall and the opening of the lower pre-split is communicated with the notch, and the length of the lower pre-split in the circumferential direction of the cover wall is 50-70% of the length of the upper pre-split. The connecting portion setting of bridge and lower acute angle is split in advance down and can be so that the lid is opened more easily, and the length of split in advance is less than the length of split in advance down simultaneously, and the anti-theft ring one side has all been stayed to the remaining section after the bridge fracture, is favorable to the used repeatedly of lid. In addition, the upper pre-splitting opening and the lower pre-splitting opening can be synchronously formed by improving the die structure when the notch is punched, and the appearance of the twist cover cannot be influenced because the upper pre-splitting opening and the lower pre-splitting opening are micro-splits.
Preferably, the upper part of the cover wall is provided with a plurality of internal pressure release openings punched inwards along the circumferential direction of the cover wall, and the cover wall at the lower side edge of the internal pressure release openings is bent inwards to form an inwards inclined plane structure. 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 a twist cover due to overlarge pressure in the container is avoided.
Preferably, the lower part of the cover wall is provided with two mutually parallel convex rings surrounding the cover wall, an annular groove is formed between the two convex rings, and the notch and the bridging are arranged at the groove bottom of the annular groove. According to the invention, the two convex rings which are parallel to each other and surround the cover wall are arranged between the lower part of the cover body and the anti-theft ring, the annular groove is formed between the two convex rings, the cut for separating the anti-theft ring and the bridging frame between the adjacent cuts are arranged at the groove bottom of the annular groove, so that the cuts and the bridging frame are positioned at the concave part of the groove when the cover is turned and turned, the palm of an operator is not easily contacted, and the palm can be prevented from being injured by sharp pricks after the anti-theft ring is broken (namely the bridging frame is broken). Therefore, the invention solves the problems that the twist cover in the prior art needs large opening force in the cover opening process and an operator is easy to be injured, greatly facilitates the opening of the twist cover and improves the safety of the twist cover in the opening process.
The invention has the beneficial effects that: the packaging container effectively solves the problems of poor sealing performance and poor guidance performance of the twist-off cover sealing gasket of the packaging container in the prior art, can adapt to container openings with various structures, and can meet the requirements of the sealing performance and the guidance performance of the sealing gasket. Meanwhile, the invention also solves the problems that the twist-off cover of the packaging container in the prior art needs large opening force in the cover opening process and an operator is easy to be injured, and greatly improves the safety of the packaging container in the opening process.
Drawings
FIG. 1 is a schematic view of a construction of the packaging container of the present invention;
FIG. 2 is a schematic view of a partial structure of a twist-off cap for the packaging container of the present invention;
FIG. 3 is a partial schematic view of the packaging container of the present invention;
FIG. 4 is a schematic view of another partial structure of the packaging container of the present invention;
FIG. 5 is a schematic view of another construction of the twist-off cap of the packaging container of the present invention;
FIG. 6 is an enlarged view of a portion of the packaging container of the present invention at the position of the lid-twisting bridge;
FIG. 7 is another enlarged partial view of the package container of the present invention at the position of the lid-twisting bridge;
FIG. 8 is an enlarged view of a portion of the packaging container of the present invention at the initial stage of fracture at the hinge-lid bridge;
FIG. 9 is an enlarged partial view of the end stage of the fracture at the position where the cover bridges are twisted on the packaging container according to the present invention;
FIG. 10 is an enlarged view of a portion of the packaging container of the present invention broken at the hinge-lid bridge;
FIG. 11 is an enlarged fragmentary view of a prior art packaging container showing a break at a hinge-lid bridge;
FIG. 12 is an enlarged fragmentary view of a prior art flat rubber gasket closing the mouth of a container;
FIG. 13 is an enlarged fragmentary view of a prior art L-shaped gasket closing the mouth of the container;
FIG. 14 is an enlarged fragmentary view of a prior art U-shaped gasket normally closing the mouth of a container;
FIG. 15 is an enlarged fragmentary view of the gasket of the present invention in normal sealing engagement with the mouth of the container;
FIG. 16 is an enlarged partial view of a prior art U-shaped gasket closing the mouth of a container (0.3 mm lower mouth);
FIG. 17 is an enlarged partial view of the gasket of the present invention closing the mouth of the container (0.3 mm lower mouth);
FIG. 18 is an enlarged partial view of a prior art U-shaped gasket closing the mouth of a container (0.5 mm lower mouth);
FIG. 19 is an enlarged partial view of the gasket of the packaging container of the present invention closing the container mouth (at a container mouth which is lower by 0.5 mm);
FIG. 20 is an enlarged view of a portion of a prior art U-shaped gasket closing the mouth of a container (the mouth of the container is 0.15 mm larger on a single side);
FIG. 21 is an enlarged view of a portion of the gasket of the packaging container of the present invention closing the container mouth (when the container mouth is 0.15 mm larger on one side);
FIG. 22 is a close-up view of a prior art U-shaped gasket closing the mouth of a container (the mouth is 0.2 mm smaller on a single side);
FIG. 23 is an enlarged view of a portion of the gasket of the present invention closing the mouth of the container (the mouth of the container is smaller by 0.2 mm);
FIG. 24 is an enlarged partial view of a prior art U-shaped gasket closing the mouth of the container (with the mouth of the container entering the gasket);
fig. 25 is a partially enlarged view of the gasket of the packaging container of the present invention closing the container mouth (when the container mouth enters the gasket).
In the figure: 1. the container comprises a cover top, 2 parts of a cover wall, 3 parts of a sealing gasket, 4 parts of an inner sealing ring, 5 parts of an outer sealing ring, 6 parts of an outer wall of the inner sealing ring, 7 parts of an inner wall of the outer sealing ring, 8 parts of a V-shaped groove, 9 parts of an arc bottom, 10 parts of a port edge part, 11 parts of a notch, 12 parts of a theft-proof ring, 13 parts of a bridge, 14 parts of an inner wall of the inner sealing ring, 15 parts of an outer wall of the outer sealing ring, 16 parts of an arc guide surface, 17 parts of an annular conical wall, 18 parts of an extrusion part of the outer sealing ring, 19 parts of an upper acute angle, 20 parts of a lower acute angle, 21 parts of an upper pre-split, 22 parts of a lower pre-split, 23 parts of an inner pressure release port, 24.
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, a highly sealable packaging container with high adaptability comprises a container body 27 and a twist-off cover, wherein a cylindrical container opening 28 is formed in the container body, an external thread is formed on the outer wall of the container opening, a section of an inner and outer smooth opening edge portion 10 is formed at the top end of the container opening, the twist-off cover comprises a cover top 1 and a cover wall 2 formed by downward extension of the outer edge of the cover top, an internal thread adapted to the external thread is formed on the cover wall, a sealing gasket 3 is arranged on the lower surface of the cover top, two concentrically arranged inner sealing rings 4 and outer sealing rings 5 are integrally extended downward on the outer periphery of the sealing gasket, an arc bottom 9 is formed at the bottom of the V-shaped groove close to the cover top, the width of the inner sealing ring bottom is smaller than that of the arc-shaped opening edge portion of the outer sealing ring, a V-shaped groove 8 with a downward opening is formed between the inner sealing ring and the outer wall, an opening angle α of the V-shaped groove is 30 degrees, the included angles between the inner wall and the outer wall of the V-shaped groove and the V-shaped groove center line of the V-shaped groove are equal, an arc-shaped groove is formed at the bottom groove bottom 9 formed at the bottom of the groove close to the inner sealing groove, the inner sealing groove is formed by a plurality of the inner sealing groove, the inner sealing groove and the inner sealing groove, the inner sealing groove is formed by the inner sealing groove, the inner sealing groove and the outer groove, the inner sealing groove, the outer groove, the inner sealing groove is formed by the inner sealing groove, the outer groove, the inner sealing groove, the outer groove.
Example 2
In embodiment 2 shown in fig. 3, the height of the cross section of the inner sealing ring is the same as that of the cross section of the outer sealing ring, the inner wall of the inner sealing ring and the outer wall of the outer sealing ring are both perpendicular to the lid top, arc-shaped guide surfaces are arranged between the lower ends of the inner sealing ring and the outer sealing ring and the groove walls of the V-shaped groove, the opening angle α of the V-shaped groove is 40 degrees, the groove walls on both sides of the V-shaped groove are of a symmetrical structure, the container body of this embodiment is integrally formed by a plastic material, the top of the mouth edge portion is a trapezoid with a narrow top and a wide bottom, an included angle between inclined planes on both sides of the trapezoid is matched with the opening angle of the V-shaped groove, the width of.
Example 3
In embodiment 3 shown in fig. 4, a small-top and large-bottom annular tapered wall 17 is formed on the lid wall close to the lid top, the upper section of the tapered wall is tightly attached to the outer sealing ring to form an outer sealing ring squeezing portion 18, when the lid of the packaging container is unscrewed to close the container opening, the pressure of the outer sealing ring on the outer wall of the container opening edge portion is greater than the pressure of the inner sealing ring on the inner wall of the container opening edge portion, the apex angle of the tapered wall is 20 to 40 degrees (28 degrees in this embodiment), and the rest is the same as that in embodiment 1.
Example 4
In the embodiment 4 shown in fig. 5 and 6, the bridge is an equi-width structure which is obliquely arranged, and one end of the bridge, which is close to the cover top, is taken as a reference, and the end of the bridge, which is connected with the anti-theft ring, is deviated towards the right side; an upper acute angle 19 is formed between the right side of the upper end of the bridge and the cut on the right side of the bridge, and a lower acute angle 20 is formed between the left side of the lower end of the bridge and the cut on the left side of the bridge. The included angle between the central line of the bridge and the horizontal plane is 45-75 degrees (60 degrees in the embodiment); the lower part of the cover wall is provided with two mutually parallel convex rings 24 which surround the cover wall, an annular groove 25 is formed between the two convex rings, and the notch and the bridging are arranged at the groove bottom of the annular groove, and the rest is the same as that of the embodiment 1, the embodiment 2 or the embodiment 3.
Example 5
In the embodiment 5 shown in fig. 7, the bridge is formed with an upper pre-split 21 at the connection part of the upper acute angle, the upper pre-split extends along the circumferential direction of the cover wall and the opening of the upper pre-split is communicated with the notch, and the length of the upper pre-split in the circumferential direction of the cover wall is 10-20% of the width of the bridge; the bridge bridges the junction with the lower acute angle forming a lower pre-split 22 extending in the circumferential direction of the lid wall and having its opening communicating with the cut, the length of the lower pre-split in the circumferential direction of the lid wall being 50-70% of the length of the upper pre-split, the rest being the same as in example 4.
The twist-off cover of the packaging container is provided with an inner sealing ring and an outer sealing ring at the matching part of the periphery of the sealing gasket and the container opening, and a V-shaped groove for sleeving the edge part of the opening is formed between the two sealing rings, so that after the edge part of the opening enters the V-shaped groove, the inner wall of the outer sealing ring clings to the outer wall of the edge part of the opening of the container to form outer sealing, and the outer wall of the inner sealing ring clings to the inner wall of the edge part of the container opening to form inner sealing, thus the container opening can be.
When the container mouth is lower (the container mouth is lower by 0.3mm in the figure), the sealing structure (see fig. 17) of the packaging container has more sealing compression amount (the sealing compression area of the U-shaped gasket is 0.1 square mm, and the sealing compression area of the U-shaped gasket is 0.03 square mm) compared with the structure of the U-shaped gasket (see fig. 16) with better sealing performance in the prior art, so that the sealing structure has better sealing performance.
When the container mouth is lower by 0.5 mm, compared with the U-shaped pad (see fig. 18) structure with better sealing performance in the prior art, the sealing structure (see fig. 19) of the packaging container has the advantages that two sides of the V-shaped groove have a small amount of contact surfaces with the container mouth, and only one side of the U-shaped pad has slight contact with the container mouth.
When the single side of the container opening is 0.15 mm larger, compared with the U-shaped pad (see figure 20) structure with better sealing performance in the prior art, the sealing structure (see figure 21) of the packaging container has a small contact surface between the inner side of the V-shaped groove and the container opening, and the outside sealing compression amount is increased; and the sealing between the inner side of the U-shaped gasket and the container opening fails, and the outside sealing compression amount is increased. The case where the container mouth is enlarged on one side means that the container mouth is enlarged in diameter or the container mouth is displaced to one side.
When the sealing gasket seals the container opening, compared with the structure of the U-shaped gasket (shown in figure 22) with better sealing performance in the prior art, the sealing structure (shown in figure 23) of the packaging container of the invention has smaller container opening (when the single side is smaller by 0.2 mm), and the resistance of the V-shaped groove entering the container opening is smaller as can be seen from the figure; and the U-shaped groove of the U-shaped pad has larger resistance. For the situation that the mouth of the container is bigger (when one side is bigger by 0.2 mm), the sealing structure (see fig. 25) of the invention is compared with the structure of the U-shaped pad (see fig. 24) with better sealing performance in the prior art, and as can be seen from the figure, the left side and the right side of the V-shaped groove of the packaging container have the guiding function on the mouth of the container, and the mouth of the container can easily enter the V-shaped groove; the U-shaped gasket only has a guiding function on one side, and the phenomenon of 'cover tilting' is easy to occur when the sealing gasket seals the container opening.
In conclusion, compared with the sealing gasket structure of the packaging container in the prior art, the sealing gasket structure of the packaging container has better sealing performance and sealing guidance performance, can adapt to container openings with various structures, has good adaptability, and solves the problems of poor sealing performance and poor guidance performance of the sealing gasket of the packaging container in the prior art. Meanwhile, because the width of the arc-shaped bottom of the V-shaped groove of the sealing gasket is smaller than the wall thickness of the opening edge part of the packaging container, when the sealing gasket seals the opening edge part of the container body, an isolation cavity is formed between the arc-shaped bottom of the V-shaped groove of the sealing gasket and the opening edge part, and the isolation cavity isolates the outer seal between the inner wall of the outer sealing ring and the opening edge part of the container from the inner seal between the outer wall of the inner sealing ring and the inner wall of the opening edge part of the container, so that the sealing effect between the sealing gasket and the opening of the container can be further.
On the other hand, the bridge connecting the cover body and the anti-theft ring is designed to be in inclined connection (a diamond structure), the inclined direction is that the upper part is towards the left and the lower part is towards the right, the anti-theft ring is clamped after rotating a small angle when the twist cover is opened, the cover body continues to rotate anticlockwise, the upper pre-split port at the upper end is firstly torn after the bridge is straightened, the length of the split port is lengthened (shown in figure 8), the cover body continues to rotate anticlockwise, the upper end of the bridge is inclined towards the right, the length of the upper pre-split port is further lengthened (shown in figure 9) until the upper end of the bridge is completely broken, the cuts at two sides of the bridge are communicated. The bridge breaking process is a gradual change process, and the twisting-off force of the bridge breaking process is obviously smaller than that of the conventional scheme, so that the bridge breaking process has a buffering function. Secondly, two convex rings which are parallel to each other and surround the cover wall are arranged between the lower part of the cover body and the anti-theft ring, an annular groove is formed between the two convex rings, and the cut for separating the anti-theft ring and the bridging between the adjacent cuts are arranged at the groove bottom of the annular groove, so that the cut and the bridging are both positioned at the concave part of the groove and are not easy to contact with the palm of an operator when the cover is turned and twisted, the palm and the sharp prick after the anti-theft ring is broken (namely the bridging is broken) can be avoided, and the safety of the twisted cover in the opening process is improved.
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 (10)
1. A high-sealing packing container with high adaptability comprises a container body (27) and a twist cover, wherein a cylindrical container opening (28) is formed in the container body, external threads are formed on the outer wall of the container opening, a section of inner and outer smooth opening edge portion (10) is formed at the top end of the container opening, the twist cover is characterized by comprising a cover top (1) and a cover wall (2) formed by downward extension of the outer edge of the cover top, internal threads matched with the external threads are formed in the cover wall, a sealing gasket (3) is arranged on the lower surface of the cover top, two inner sealing rings (4) and an outer sealing ring (5) which are concentrically arranged are integrally and extend downwards in the peripheral portion of the sealing gasket, the outer walls (6) of the inner sealing rings and the inner walls (7) of the outer sealing rings are obliquely arranged, a downward opening V-shaped groove (8) is formed between the inner sealing rings and the outer sealing rings, the opening angle α of the V-shaped groove is 30-40 degrees, the inner wall and the outer wall and the V-shaped groove center line are equal, an arc-shaped bottom groove (9) is formed between the V-shaped groove close to the cover top of the opening, the groove, the wall is smaller in width than the wall of the groove, an angle formed between the groove of the groove, and the groove, when the groove is connected with the groove of the groove, a plurality of the groove, and the groove, a plurality of the groove, the.
2. The adaptable high-sealability packaging container of claim 1, wherein the top of the mouth edge portion is arc-shaped or trapezoid with narrow top and wide bottom, the included angle between the inclined planes at two sides of the trapezoid is matched with the opening angle of the V-shaped groove, and the width of the top edge of the trapezoid is larger than that of the arc-shaped bottom.
3. The adaptable high-tightness packaging container according to claim 1, characterized in that the height of the cross section of the inner sealing ring is larger than that of the cross section of the outer sealing ring, the inner wall (14) of the inner sealing ring and the outer wall (15) of the outer sealing ring are both perpendicular to the cover top, and arc-shaped guide surfaces (16) are arranged between the lower ends of the inner sealing ring and the outer sealing ring and the wall of the V-shaped groove.
4. The adaptable high-sealability packaging container of claim 1 wherein the cross section of the inner sealing ring is as high as that of the outer sealing ring, the inner wall of the inner sealing ring and the outer wall of the outer sealing ring are both perpendicular to the cap top, an arc-shaped guide surface is arranged between the lower end of the inner sealing ring and the lower end of the outer sealing ring and the wall of the V-shaped groove, and the two side walls of the V-shaped groove are of symmetrical structure.
5. The adaptable high-tightness packaging container according to claim 1, characterized in that a cover wall close to the cover top is formed with an annular tapered wall (17) with a small top and a big bottom, the upper section of the tapered wall is tightly attached to the outer sealing ring to form an outer sealing ring squeezing portion (18), when the cover is unscrewed to cover the container opening, the pressure of the outer sealing ring on the outer wall of the container opening edge portion is greater than that of the inner sealing ring on the inner wall of the container opening edge portion, and the vertex angle of the tapered wall is 20 to 40 degrees.
6. The adaptable high-hermeticity packaging container according to claim 1, wherein the bridge is an equi-wide structure which is obliquely arranged, and one end of the bridge connected with the anti-theft ring is deviated to the right side by taking one end of the bridge close to the cover top as a reference; an upper acute angle (19) is formed between the right side of the upper end of the bridge and the cut on the right side of the bridge, and a lower acute angle (20) is formed between the left side of the lower end of the bridge and the cut on the left side of the bridge.
7. The adaptable high-sealability packaging container of claim 6 wherein the angle between the center line of the bridge and the horizontal plane is 45 to 75 degrees; the bridge is provided with an upper pre-split (21) at the connecting part of the upper acute angle, the upper pre-split extends along the circumferential direction of the cover wall, the opening of the upper pre-split is communicated with the notch, and the length of the upper pre-split in the circumferential direction of the cover wall is 10-20% of the width of the bridge.
8. Adaptable high-sealability packaging container according to claim 6 or 7, characterized in that the bridge bridges are formed with a lower pre-breach (22) in connection with the lower acute angle, said lower pre-breach extending in circumferential direction of the lid wall and having its opening communicating with the cut-out, the length of the lower pre-breach in circumferential direction of the lid wall being 50-70% of the length of the upper pre-breach.
9. The adaptable high-sealability packaging container according to claim 1, wherein the upper portion of the lid wall is provided with a plurality of inwardly punched internal pressure relief openings (23) along the lid wall circumferential direction, and the lid wall of the lower side of the internal pressure relief openings is bent inwardly to form an inwardly inclined ramp structure.
10. A flexible, highly sealable packaging container according to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 or 9, c h a r a c t e r i z e d in that the lower part of the lid wall is provided with two collars (24) parallel to each other and surrounding the lid wall, which collars between themselves form an annular groove (25), said cut-outs and bridges being provided at the bottom of the annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308402.2A CN111137550B (en) | 2018-11-05 | 2018-11-05 | High-sealing packing container with strong adaptability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308402.2A CN111137550B (en) | 2018-11-05 | 2018-11-05 | High-sealing packing container with strong adaptability |
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| Publication Number | Publication Date |
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| CN111137550A true CN111137550A (en) | 2020-05-12 |
| CN111137550B CN111137550B (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811308402.2A Active CN111137550B (en) | 2018-11-05 | 2018-11-05 | High-sealing packing container with strong adaptability |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114590487A (en) * | 2020-12-04 | 2022-06-07 | 深圳市健心医疗科技有限公司 | Implant packaging container and implant packaging composition |
| WO2022135025A1 (en) * | 2020-12-23 | 2022-06-30 | 台州市祥珑食品容器科技股份有限公司 | Blow-molded container having high barrier layer |
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| WO2022135025A1 (en) * | 2020-12-23 | 2022-06-30 | 台州市祥珑食品容器科技股份有限公司 | Blow-molded container having high barrier layer |
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| Publication number | Publication date |
|---|---|
| CN111137550B (en) | 2022-04-12 |
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