Self-sealing plastic packaging bag
By using a combined design of curved closure strips, air cavity and silicone strips in self-sealed plastic packaging bags, the seal slack problem caused by concave and convex bone deformation is solved, and a higher sealing and stability is achieved to prevent items from scattering.
Patent Information
- Application Number
- CN202420902603.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-26
AI Technical Summary
During long-term use or frequent storage and access, the sealing part is prone to deformation, resulting in loose seals and inability to effectively seal them, resulting in the problem of scattering items.
A self-sealed plastic packaging bag is designed, using curved closure strips and fastening straps, built-in air cavity and silicone strips, which expand the silicone strips through gas-extrusion of the air cavity to increase friction, and through conical protrusions and positioning The strip improves seal stability.
It effectively avoids the sealing or looseness, improves the sealing and stability of plastic packaging bags, and prevents items from falling apart.
Smart Images
Figure CN222203438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of self-sealing plastic packaging bags, in particular to a self-sealing plastic packaging bag. Background Art
[0002] Self-sealing plastic bags refer to packaging bags that can be automatically sealed by pressing. Common ones include ziplock self-sealing bags, concave and convex bone self-sealing bags, etc.
[0003] Ziplock bags can be used for internal and external packaging of various small items;
[0004] Self-sealing bags made of food-grade raw materials can be used to store various snacks, tea, seafood, etc., and are moisture-proof, odor-proof, waterproof, insect-proof, and prevent things from scattering.
[0005] However, when the concave-convex bone ziplock bag is used for a long time or small objects are frequently stored and retrieved, the sealing part of the concave-convex bone ziplock bag will be deformed, causing the connection between the concave-convex bones to loosen, resulting in the ziplock bag being unable to be closed and easily opening during use, causing the items stored and retrieved inside the ziplock bag to scatter. Utility Model Content
[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a self-sealing plastic packaging bag so as to solve the technical problems mentioned in the above background technology.
[0007] The above technical objectives of the utility model are achieved through the following technical solutions:
[0008] A self-sealing plastic packaging bag comprises a plastic bag, wherein a first closing strip and a second closing strip are fixedly connected to both sides of the bag opening of the plastic bag, the first closing strip and the second closing strip are both arc-shaped, and an air cavity is arranged inside the first closing strip, the two ends of the first closing strip and the two ends of the second closing strip are respectively connected to each other, a fastening strip is arranged on the inner side of the first closing strip, and a locking strip is fixedly connected to the inner side of the second closing strip.
[0009] Furthermore, the fastening belt includes two rectangular belts, which are respectively fixedly installed at the two ends of the inner side of the first closing strip, an inner cavity is provided inside the rectangular belt, and silicone strips are provided at the ends of the opposite sides of the two rectangular belts, and the internal cavity of the silicone strip is connected to the inner cavity.
[0010] Furthermore, a vent hole is opened on the cavity wall of the inner cavity near the first closing strip, the vent hole is interconnected with the air cavity, a diaphragm hole plug is installed inside the vent hole, and one end of the diaphragm hole plug is fixedly connected to a spring sheet connected to the cavity wall of the inner cavity.
[0011] Furthermore, the outer surface of the silicone strip is provided with a plurality of evenly distributed conical protrusions, and the material of the conical protrusions is the same as that of the silicone strip.
[0012] Furthermore, the locking strip includes a positioning strip, the positioning strip is fixedly connected to the second closing strip, and locking grooves are provided at positions on both sides of the positioning strip corresponding to the silicone strip.
[0013] Furthermore, the position of the positioning strip corresponds to the distance between the two rectangular strips, and the width of the positioning strip is equal to the distance between the two rectangular strips.
[0014] In summary, the present invention includes at least one of the following beneficial technical effects:
[0015] 1. The self-sealing plastic packaging bag is formed by pressing the first closing strip and the second closing strip together, so that the positioning strip is inserted between the two rectangular strips, and in the process of pressing the first closing strip, the gas inside the air cavity is squeezed into the inner cavity through the vent hole, so that the silicone strip expands, thereby increasing the friction between the silicone strip and the positioning strip, and sealing the plastic packaging bag, effectively avoiding the situation that the plastic packaging bag is not tightly sealed or loose due to the deformation of the concave and convex bones caused by long-term use of the plastic packaging bag;
[0016] 2. The self-sealing plastic packaging bag has an equal spacing between the two rectangular bands and a width of the positioning strip. When the positioning strip is inserted between the two rectangular bands, both sides of the positioning strip will contact the side surfaces of the rectangular band, thereby improving the sealing stability. The conical protrusion is provided to increase the friction between the silicone strip and the locking strip, thereby further improving the sealing stability of the plastic packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0018] Figure 1 The utility model is a structural schematic diagram of a self-sealing plastic packaging bag.
[0019] Figure 2 The utility model is a structural cross-sectional view of a self-sealing plastic packaging bag.
[0020] Figure 3 A self-sealing plastic packaging bag of the utility model Figure 2 Enlarged view of point A.
[0021] In the figure, 1, plastic bag; 2, first closing strip; 21, air cavity; 3, second closing strip; 4, fastening strip; 41, rectangular strip; 42, inner cavity; 43, silicone strip; 44, vent; 45, diaphragm hole plug; 46, spring sheet; 47, conical protrusion; 5, locking strip; 51, positioning strip; 52, locking groove. DETAILED DESCRIPTION
[0022] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0023] Example:
[0024] Reference Figure 1 - Figure 3 The utility model discloses a self-sealing plastic packaging bag, comprising a plastic bag 1, wherein a first closing strip 2 and a second closing strip 3 are fixedly connected to both sides of the bag opening of the plastic bag 1, wherein the first closing strip 2 and the second closing strip 3 are both arc-shaped, and an air cavity 21 is arranged inside the first closing strip 2, wherein the two ends of the first closing strip 2 and the two ends of the second closing strip 3 are respectively connected to each other, a fastening strip 4 is arranged on the inner side of the first closing strip 2, and a locking strip 5 is fixedly connected to the inner side of the second closing strip 3.
[0025] In this embodiment, the first closing strip 2 and the second closing strip 3 are pressed relative to each other, and the locking strip 5 connected to the second closing strip 3 is inserted into the interior of the fastening strip 4 connected to the first closing strip 2, so as to achieve the purpose of connecting the second closing strip 3 with the first closing strip 2, and then the bag opening of the plastic bag 1 is closed by the first closing strip 2 and the second closing strip 3, so as to achieve the purpose of automatic sealing.
[0026] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the fastening belt 4 includes two rectangular belts 41, and the two rectangular belts 41 are respectively fixedly installed at the two ends of the inner side of the first closing strip 2, and an inner cavity 42 is provided inside the rectangular belt 41, and a silicone strip 43 is provided at the end of one side opposite to the other of the two rectangular belts 41, and the inner cavity of the silicone strip 43 is connected to the inner cavity 42.
[0027] In this embodiment, when in use, the air inside the inner cavity 42 enters the interior of the silicone strip 43, causing the silicone strip 43 to expand, increasing the contact pressure with the locking belt 5, thereby increasing the contact pressure between the locking belt 5 and the fastening belt 4 to achieve the effect of improving the sealing of the plastic bag 1.
[0028] In a further preferred embodiment of the present invention, Figure 1-3As shown, a vent hole 44 is opened on the cavity wall of the inner cavity 42 near the first closing strip 2, and the vent hole 44 is communicated with the air cavity 21. A diaphragm plug 45 is installed inside the vent hole 44, and one end of the diaphragm plug 45 is fixedly connected to a spring sheet 46 connected to the cavity wall of the inner cavity 42.
[0029] In the present embodiment, in the process of pressing the first sealing strip 2 and the second sealing strip 3 against each other, the gas inside the air cavity 21 of the first sealing strip 2 will be squeezed into the interior of the inner cavity 42 through the vent hole 44, so that the air pressure inside the inner cavity 42 is increased, so as to achieve the purpose of expanding the silicone strip 43. At the same time, when the gas is squeezed into the vent hole 44, the diaphragm hole plug 45 is pushed open, so that the gas flows into the inner cavity 42. After the pressure applied to the first sealing strip is released, the diaphragm hole plug 45 continues to block the vent hole 44 under the influence of the spring sheet 46, and the diaphragm hole plug 45 is fixed to one end of the vent hole 44 under the influence of the air pressure inside the inner cavity 42, so as to achieve the purpose of closing the vent hole 44 and preventing air backflow.
[0030] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the outer surface of the silicone strip 43 is provided with a plurality of evenly distributed conical protrusions 47 , and the material of the conical protrusions 47 is the same as that of the silicone strip 43 .
[0031] In this embodiment, the conical protrusion 47 is provided to increase the friction between the silicone strip 43 and the locking strip 5, thereby improving the sealing stability of the plastic packaging bag.
[0032] In a further preferred embodiment of the present invention, Figure 1-3 As shown, the locking strip 5 includes a positioning strip 51 , and the positioning strip 51 is fixedly connected to the second closing strip 3 . Locking grooves 52 are formed at positions on both sides of the positioning strip 51 corresponding to the silicone strip 43 .
[0033] In this embodiment, through the setting of the locking groove 52, when the positioning strip 51 is inserted between the two rectangular strips 41, the silicone strip 43 is located inside the locking groove 52, so as to achieve the purpose of fixing the positioning strip 51 and the two rectangular strips 41 together, and after the silicone strip 43 expands, the silicone strip 43 contacts the groove wall of the locking groove 52, thereby achieving the effect of improving the stability of the seal of the plastic packaging bag, and the purpose of improving the sealing degree of the seal is achieved through the expansion of the silicone strip 43, thereby avoiding the situation where the seal is not tight due to the deformation of the concave and convex bones of the plastic packaging bag.
[0034] In a further preferred embodiment of the present invention, Figure 1-3As shown, the position of the positioning strip 51 corresponds to the distance between the two rectangular strips 41 , and the width of the positioning strip 51 is equal to the distance between the two rectangular strips 41 .
[0035] In this embodiment, since the spacing between the two rectangular bands 41 is equal to the width of the positioning strip 51, when the positioning strip 51 is inserted between the two rectangular bands 41, the positioning strip 51 will contact the side of the rectangular band 41, thereby achieving the effect of improving the sealing stability.
[0036] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A self-sealing plastic packaging bag, comprising a plastic bag (1), characterized in that: A first closing strip (2) and a second closing strip (3) are fixedly connected to both sides of the bag opening of the plastic bag (1); the first closing strip (2) and the second closing strip (3) are both arranged in an arc shape, and an air cavity (21) is arranged inside the first closing strip (2); the two ends of the first closing strip (2) and the two ends of the second closing strip (3) are respectively connected to each other; a fastening strip (4) is arranged on the inner side of the first closing strip (2), and a locking strip (5) is fixedly connected to the inner side of the second closing strip (3).
2. A self-sealing plastic packaging bag according to claim 1, characterized in that: The fastening belt (4) comprises two rectangular belts (41), the two rectangular belts (41) are respectively fixedly mounted at the two ends of the inner side of the first closing strip (2), an inner cavity (42) is arranged inside the rectangular belt (41), and a silicone strip (43) is arranged at the ends of the opposite sides of the two rectangular belts (41), and the inner cavity of the silicone strip (43) is connected to the inner cavity (42).
3. A self-sealing plastic packaging bag according to claim 2, characterized in that: The inner cavity (42) is provided with a vent hole (44) near the cavity wall of the first closing strip (2), the vent hole (44) is communicated with the air cavity (21), a diaphragm hole plug (45) is installed inside the vent hole (44), and one end of the diaphragm hole plug (45) is fixedly connected to a spring sheet (46) connected to the cavity wall of the inner cavity (42).
4. A self-sealing plastic packaging bag according to claim 3, characterized in that: The outer surface of the silicone strip (43) is provided with a plurality of evenly distributed conical protrusions (47), and the material of the conical protrusions (47) is the same as that of the silicone strip (43).
5. A self-sealing plastic packaging bag according to claim 4, characterized in that: The locking strip (5) comprises a positioning strip (51), the positioning strip (51) is fixedly connected to the second closing strip (3), and locking grooves (52) are provided at positions on both sides of the positioning strip (51) corresponding to the silicone strip (43).
6. A self-sealing plastic packaging bag according to claim 5, characterized in that: The position of the positioning strip (51) corresponds to the distance between the two rectangular strips (41), and the width of the positioning strip (51) is equal to the distance between the two rectangular strips (41).