A sealing structure of a silica gel fresh-keeping bag and a manufacturing method thereof

Abstract

The present application relates to the technical field of packaging bag, and particularly to a silica gel fresh-keeping bag sealing structure and a manufacturing method thereof. The fresh-keeping bag body is composed of a first surface and a second surface, and the top of the first surface and the second surface forms an opening shape. The inner surface of the opening position of the first surface and the second surface of the body is provided with a suction cup, and the suction cup is attracted to the opening position of the first surface and the second surface. The first surface, the second surface and the suction cup of the fresh-keeping bag body are formed by one-time in-mold forming of a mold. The present application solves the problem caused by the difficulty in demolding of the existing silica gel fresh-keeping bag production, and can be applied to silica gel fresh-keeping bags.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of packaging bags, in particular to a silica gel fresh-keeping bag sealing structure and a manufacturing method thereof. BACKGROUND

[0002] In modern family life, more and more people use silica gel fresh-keeping bags to store fresh foods such as vegetables and fruits in a low-temperature environment such as a refrigerator; on the one hand, it can slow down the dehydration process, and on the other hand, it can also avoid odor mixing.

[0003] See Figure 1 、 2 The existing structure of a fresh-keeping bag is shown in the drawings; the fresh-keeping bag is provided with an opening 13 at the top of the fresh-keeping bag body 10, in order to seal the opening 13, a first sealing strip 131 and a second sealing strip 132 are arranged on both sides of the opening 13, a clamping protrusion 1311 is arranged on the first sealing strip 131, a clamping groove 1321 is arranged on the second sealing strip 132 at a position corresponding to the clamping protrusion 1311, the clamping protrusion 1311 can clamp the clamping groove 1321, thereby preliminarily sealing the opening 13. In use, the user pinches the first sealing strip 131 and the second sealing strip 132 along the extension direction of the first sealing strip 131 and the second sealing strip 132, so that the clamping protrusion 1311 is pressed into the clamping groove 1321, so that the sealing effect is good and the operation is convenient and fast.

[0004] The clamping protrusion 1311 on the first sealing strip 131 of the foregoing existing fresh-keeping bag is a structure in which a column is protruded on the first sealing strip 131, and a cap-shaped top is further covered on the top end of the column. This structure has the problem of difficult demolding during the production of the fresh-keeping bag by vulcanization of silica gel raw materials; and the surface treatment after demolding is also time-consuming. Therefore, there are problems of low efficiency and high production cost. The same problem also exists in the production process of the clamping groove 1321 of the second sealing strip 132. SUMMARY

[0005] The technical problem solved by the present application is to provide a silica gel fresh-keeping bag sealing structure and a manufacturing method thereof, which solves the problems of difficult demolding and low efficiency caused by the existing structure.

[0006] The technical solution for solving the above technical problem is:

[0007] The fresh-keeping bag body is composed of a first face and a second face, and the top of the first face and the second face forms an opening; characterized in that: the inner surface of the opening position of the first face and the second face of the body is provided with a suction cup, and the suction cup is attracted to the opening position of the first face and the second face;

[0008] The first surface, and the opening of the second surface, the inner surface of the protruding ring; the second surface corresponding to the first surface of the convex ring corresponding to the formation of the circular groove; convex ring and circular groove constitute the suction cup; when the convex ring and circular groove fit and extrude the internal air, under the action of atmospheric pressure difference suction first surface and the opening of the second surface;

[0009] The convex ring along the opening of the first surface, parallel to the opening end; convex ring and convex ring, between the combination of the first surface and the second surface, between the setting of the sealing connection strip; the connection strip can be one or more;

[0010] The convex ring corresponding to the first surface, the circular groove corresponding to the second surface of the inner surface forms a groove;

[0011] Circular groove is provided with exhaust gap near the opening end of the second surface;

[0012] The convex ring outer side and the circular groove inner side form an interference fit.

[0013] The convex ring corresponding to the first surface, the circular groove corresponding to the second surface of the outer side is outwardly convex, and the convex circular point is formed on the outer side surface of the first surface and the second surface.

[0014] The first surface and the second surface of the fresh-keeping bag body and the suction cup are formed by one-time in-mold forming of the mold.

[0015] The fresh-keeping bag is made of silica gel material.

[0016] The present application forms a suction cup on the opening of the first surface and the second surface of the fresh-keeping bag; the suction of the suction cup can realize the closure of the opening. Because the structure of the suction cup is different from the existing structure, there is no barb structure; therefore, in the demolding process after the vulcanization of the silica gel raw material, the demolding can be very easy; after demolding, no excessive surface treatment is needed. Therefore, the production efficiency can be improved, the cost can be reduced; at the same time, the mold structure can be simplified, the service life of the mold can be prolonged, and the quality of the product can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the drawings:

[0018] Figure 1 is the front view of the existing fresh-keeping bag;

[0019] Figure 2 is the side view of the existing fresh-keeping bag;

[0020] Figure 3 is the left view of the fresh-keeping bag of the present application;

[0021] Figure 4 is the side view of the fresh-keeping bag of the present application;

[0022] Figure 5is one of the three-dimensional view of the preservative bag of the present application;

[0023] Figure 6 is the second three-dimensional view of the preservative bag of the present application;

[0024] Figure 7 is one of the open state view of the preservative bag of the present application;

[0025] Figure 8 is the second open state view of the preservative bag of the present application;

[0026] Figure 9 is the cross-sectional view of the closing state sealing part of the preservative bag of the present application;

[0027] Figure 10 is the schematic view of the open state sealing part of the preservative bag of the present application;

[0028] Figure 11 is the open state side view of the preservative bag of the present application;

[0029] Figure 12 is the schematic view of the first face structure of the preservative bag of the present application;

[0030] Figure 13 is the schematic view of the second face structure of the preservative bag of the present application;

[0031] Figure 14 is the schematic view of the exhaust gap 123 of the present application. DETAILED DESCRIPTION

[0032] The following embodiments are the description of the specific implementation of the present application, which is for the understanding of the technical personnel in the art and is not the limitation of the protection scope of the present application; any equivalent transformation derived from the description of the embodiments of the present application shall be within the protection scope of the present application.

[0033] See Figures 3-14 As shown in the figure, the preservative bag body 10 of the present application is composed of a first face 11 and a second face 12. The first face 11 and the second face 12 are defined for the convenience of description, and are not limited in structure. Any structure that can form a bag shape and is provided with an opening can be used. The top of the first face 11 and the second face 12 forms an opening.

[0034] A plurality of convex rings 112 are formed on the first face 11 and protrude from the inner surface of the opening of the second face 12. The convex rings 112 are arranged in parallel to the opening end along the opening of the first face. A sealing connecting strip 113 is arranged between the convex rings 112 and between the combination of the convex rings 112 and the first face 11 and the second face 12. The connecting strip 113 can be one or more. The first face 11 outside the convex ring 112 protrudes outward as a dot 111, and the inner surface forms a groove 114.

[0035] The second face 12 corresponds to the convex ring 111 of the first face, and the convex ring 112 corresponds to the circular groove 122, which forms a circular groove 122. The convex ring 112 and the circular groove 122 constitute the suction cup. The circular groove 122 corresponds to the second face and extends outwardly to the outside of the circular point 121. The inner surface forms a groove 124. The circular groove 122 is provided with an exhaust gap 123 near the opening end of the second face.

[0036] The outer side of the convex ring 112 and the inner side of the circular groove 122 form an interference fit.

[0037] When the aforementioned structure of the silica gel fresh-keeping bag is closed at the opening top, the fingers are contacted with the corresponding convex circular points 111, 121 on the first face 11 and the second face 12, and then they are pinched in the direction of convergence. When they are pinched to a certain extent, the top of the convex ring 112 on the first face 11 begins to contact the top of the circular groove 112 on the second face 12. Continue to pinch, because of the interference fit between the outer side of the convex ring 112 and the inner side of the circular groove 112, the convex ring 112, the circular groove 112 and the grooves 114, 124 inside them form a relatively sealed space, and only the exhaust gap 123 is left open to the outside. With the continuation of pinching, the internal space is reduced, and the internal air is discharged from the exhaust gap 123. Continue to pinch, and the exhaust gap 123 is closed. Then, with further pinching, the center of the grooves 114, 124 is contacted, the top of the convex ring 112 and the top of the circular groove 112 are contacted, and the sealed space formed by the convex ring 112, the circular groove 112 and the grooves 114, 124 inside them is forced to discharge the residual air between the contact surfaces of the convex ring 112 and the circular groove 112. At this time, the fingers are released, and because the air in the sealed space formed by the convex ring 112, the circular groove 112 and the grooves 114, 124 inside them is discharged, a large atmospheric pressure difference is formed between the outside and the inside. Repeat the aforementioned pinching action until all the convex rings 112 and the circular grooves 112 are tightly fitted. Under the dual action of atmospheric pressure difference and interference fit between the convex ring 112 and the circular groove 112, the opening top of the first face 11 and the second face 12 is closed.

[0038] In the closed state, the connecting strip 113 can strengthen the closure between the convex rings 112 of the first face, between the circular grooves 112 of the second face 12, and between the combination of the convex ring 112 and the first face 11 and the second face 12, and improve the sealing performance of the fresh-keeping bag.

[0039] If you want to open the fresh-keeping bag, you only need to separate the top of the first face 11 and the second face 12, and separate the convex ring 112 and the circular groove 112 according to the reverse process of closing, that is, the fresh-keeping bag can be opened. The relevant action process is not described here.

[0040] The first surface and the second surface of the fresh-keeping bag body and the suction cup thereof are made of silica gel as raw material, and are formed by one-time in-mold forming through vulcanization. While meeting the environmental protection demand of the fresh-keeping bag, the characteristics of the silica gel material are fully utilized, one-time in-mold forming and the sealing property of the sealing structure are realized, and the repeated use demand is met.

Claims

1. A sealing structure of a silica gel fresh-keeping bag, the fresh-keeping bag body is composed of a first surface and a second surface, the top of the first surface and the second surface forms an opening; characterized in that: The inner surface of the first face and the second face opening position of the body is provided with a suction cup, which suctions the first face and the second face opening position; A plurality of convex rings are formed on the inner surface of the first face and the second face opening position; the second face is provided with a circular groove corresponding to the convex ring of the first face; the convex ring and the circular groove constitute the suction cup; when the convex ring and the circular groove are matched and extruded to squeeze out the internal air, the first face and the second face opening position are suctioned under the action of atmospheric pressure difference; The convex rings are arranged along the opening of the first face and parallel to the opening end; the sealing connecting strips are arranged between the convex rings and the joint between the convex rings and the first face and the second face; the connecting strips are one or more; The inner surface of the first face corresponding to the convex ring and the second face corresponding to the circular groove is provided with a groove; The circular groove is provided with an exhaust gap close to the opening end of the second face; The outer surface of the convex ring and the inner surface of the circular groove form an interference fit.

2. The seal structure for a silicone fresh-keeping bag according to claim 1, characterized in that: The outer surface of the first face corresponding to the convex ring and the second face corresponding to the circular groove is outwardly convex, forming a convex dot on the outer surface of the first face and the second face.

3. A method of manufacturing the sealing structure of the fresh-keeping bag of silica gel according to claim 1, characterized in that: The first face, the second face and the suction cup of the fresh-keeping bag body are formed by one-time in-mold forming of a mold.

4. The manufacturing method according to claim 3, characterized in that: The fresh-keeping bag is made of silica gel material.

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