Silicone fresh-keeping bag sealing structure and manufacturing method thereof

Abstract

The present application relates to the technical field of packaging bags, in particular to a sealing structure of a silica gel fresh-keeping bag and a manufacturing method thereof. The fresh-keeping bag is provided with a transverse protrusion transversely arranged relative to the clamping protrusion between the two ends of the clamping protrusion and the bottom of the opening; a transverse slot is arranged between the two ends of the clamping slot and the bottom of the opening corresponding to the transverse protrusion; after the clamping protrusion and the clamping slot are matched, the transverse protrusion and the transverse slot are matched to completely seal the opening. The fresh-keeping bag body, the sealing strip forming the opening, and the protrusion and the slot arranged on the sealing strip are formed by one-time in-mold forming by a mold. The present application solves the problems caused by the existing silica gel fresh-keeping bag secondary artificial glue sticking + mold heating and solidification process; and can be applied to the sealing structure and manufacturing of silica gel fresh-keeping bags.

Description

Technical Field

[0001] This invention relates to the field of packaging bag technology, and specifically to a silicone food preservation bag sealing structure and its manufacturing method. Background Technology

[0002] In modern family life, vegetables, fruits, and other foods are usually stored and preserved in environments such as refrigerators where they can maintain a low temperature. To reduce dehydration of fresh foods such as vegetables and fruits, they are often sealed in plastic bags. Of course, some people also use plastic bags to prevent odors from mixing.

[0003] See Figure 1 , 2 As shown, existing food storage bags have an opening 13 at the top of the bag body 10. To seal the opening 13, a first sealing strip 131 and a second sealing strip 132 are provided on both sides of the opening 13. The first sealing strip 131 has a snap-fit ​​protrusion 1311, and the second sealing strip 132 has a snap-fit ​​groove 1321 at the position corresponding to the snap-fit ​​protrusion 1311. The snap-fit ​​protrusion 1311 can snap into the snap-fit ​​groove 1321, thereby initially sealing the opening 13. In use, the user can press 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 by hand, so that the snap-fit ​​protrusion 1311 can be pressed into the snap-fit ​​groove 1321, which makes the operation convenient and quick while ensuring a good sealing effect. To enhance the sealing performance of the opening 13 at both ends of the first sealing strip 131 and the second sealing strip 132, a second sealing protrusion 1314 is provided at both ends of the inner side of the first sealing strip 131, and a second sealing groove 1324 is provided at both ends of the inner side of the second sealing strip 132 at the corresponding positions of the second sealing protrusion 1314. The second sealing protrusion 1314 can engage with the second sealing groove 1324, thereby further improving the sealing performance of the opening 13.

[0004] The existing food storage bags described above; the second sealing protrusion 1314 and the second sealing groove 1324 are extended along the protrusion 1311 and the snap-fit ​​groove 1321; they are not substantially different from the snap-fit ​​protrusion 1311 and the snap-fit ​​groove 1321; thus, it is difficult to achieve a complete seal. Furthermore, in the existing production process, the bag is opened at the side of the opening and then molded, followed by a second manual gluing process and mold heating and solidification, and finally a second vulcanization process. The aforementioned existing processing requires four steps: mold forming, manual gluing, mold heating and solidification, and second vulcanization. The product forming process must employ two steps: a second manual gluing process and a mold heating and solidification process. This increased production process leads to increased costs and reduced efficiency; it also easily results in decreased product quality stability; for example, tears are prone to occur at the bag opening. Summary of the Invention

[0005] The technical problem solved by this invention is to provide a silicone food storage bag sealing structure and its manufacturing method; and to solve the problems of poor sealing effect and complex production process caused by the existing structure of setting a second sealing protrusion and a second sealing groove along the protrusion and the snap-fit ​​groove.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is:

[0007] The silicone food storage bag sealing structure has an opening at the top of the bag body; a first sealing strip and a second sealing strip are provided on both sides of the opening; the first sealing strip has a snap-fit ​​protrusion, and the second sealing strip has a snap-fit ​​groove corresponding to the snap-fit ​​protrusion. After the snap-fit ​​protrusion and the snap-fit ​​groove cooperate, the opening is initially sealed; a transverse protrusion is provided between the two ends of the snap-fit ​​protrusion and the bottom of the opening, which is lateral to the snap-fit ​​protrusion; a transverse groove is provided between the two ends of the snap-fit ​​groove and the bottom of the opening, corresponding to the transverse protrusion; after the snap-fit ​​protrusion and the snap-fit ​​groove cooperate, the transverse protrusion and the transverse groove cooperate to completely seal the opening.

[0008] The transverse groove is designed as a non-through groove in the thickness direction of the sealing strip, and the groove ends are formed by the sealing strip at both ends of the transverse groove. When the transverse protrusion and the transverse groove are engaged, the groove ends and the two ends of the transverse protrusion are fully engaged to achieve a complete seal of the opening.

[0009] The lateral protrusion is semi-cylindrical; it gradually rises from the bottom of the opening, and the other side is connected to the snap-fit ​​protrusion in an arc transition; the top of the lateral protrusion is higher than the top of the snap-fit ​​protrusion.

[0010] The length of the lateral protrusion is greater than the thickness of the snap-fit ​​protrusion, and the two lateral protrusions and the snap-fit ​​protrusion form a curved "I" shape.

[0011] The manufacturing method of the silicone food storage bag sealing structure is to form the food storage bag body, the sealing strip forming the opening, and the protrusions and grooves on the sealing strip by molding them in one go using a mold.

[0012] The food storage bag is made of silicone material.

[0013] By adopting the aforementioned technical solution, the present invention has the following beneficial effects:

[0014] The food storage bag and its opening structure are formed in-mold in one step, avoiding the need for secondary manual gluing and mold heating for solidification. This simplified process reduces costs, increases production efficiency, and improves quality stability. It also avoids the "tearing open" problem common in conventional bag designs.

[0015] In contrast to the snap-fit ​​protrusion, this invention provides transverse protrusions between the two ends of the snap-fit ​​protrusion and the bottom of the opening; and transverse grooves are provided corresponding to the transverse protrusions between the two ends of the snap-fit ​​groove and the bottom of the opening; the transverse protrusions and transverse grooves enable a complete seal of the food storage bag. This combined longitudinal and transverse layout also ensures the stability of the seal. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Figure 1 This is a side view of an existing food storage bag.

[0018] Figure 2 This is a magnified side view of an existing food storage bag;

[0019] Figure 3 This is a left view of the food storage bag of the present invention;

[0020] Figure 4 This is a front view of the food storage bag of the present invention;

[0021] Figure 5 This is a right view of the food storage bag of the present invention;

[0022] Figure 6 This is a perspective view of the food storage bag of the present invention;

[0023] Figure 7 This is a cut-open diagram of the food storage bag of the present invention;

[0024] Figure 8 yes Figure 7 Enlarged view of Part A;

[0025] Figure 9 yes Figure 7 Enlarged view of Part B;

[0026] Figure 10 This is a perspective view of the food storage bag of the present invention from another angle;

[0027] Figure 11 yes Figure 10 Enlarged view of section C;

[0028] Figure 12 yes Figure 10 Partial sectional view of the condition;

[0029] Figure 13 yes Figure 12 Enlarged view of section D;

[0030] Figure 14 yes Figure 3 Status sectional view;

[0031] Figure 15 yes Figure 14 Enlarged view of section E. Detailed Implementation

[0032] The following embodiments are descriptions of specific implementations of the present invention. These descriptions are intended to facilitate understanding of the technical solutions of this application by those skilled in the art and are not intended to limit the scope of protection of the technical solutions of the present invention. All equivalent transformations that can be obtained from the description of the embodiments of the present invention should be within the scope of protection of the present invention.

[0033] See Figure 3-15 As shown, the food storage bag of the present invention has an opening 13 at the top of the bag body 10, and a first sealing strip 131 and a second sealing strip 132 on both sides of the opening 13. The first sealing strip 131 has a snap-fit ​​protrusion 1311, and the second sealing strip 132 has a snap-fit ​​groove 1321 at a position corresponding to the snap-fit ​​protrusion 1311. The snap-fit ​​protrusion 1311 can engage with the snap-fit ​​groove 1321, thereby initially sealing the opening 13.

[0034] When the user pinches the first sealing strip 131 and the second sealing strip 132 together with their hand along the extension direction of the first sealing strip 131 and the second sealing strip 132, the snap-fit ​​protrusion 1311 can be pressed into the snap-fit ​​groove 1321 to achieve a convenient initial sealing effect.

[0035] Since it is difficult to achieve a complete seal between the two ends of the snap-fit ​​protrusion 1311 and the snap-fit ​​groove 1321, a transverse protrusion 1315 is provided between the two ends of the snap-fit ​​protrusion 1311 and the bottom of the opening 13, which is transversely arranged relative to the snap-fit ​​protrusion 1311; a transverse groove 1325 is provided between the two ends of the snap-fit ​​groove 1321 and the bottom of the opening, corresponding to the transverse protrusion 1315; after the snap-fit ​​protrusion 1311 and the snap-fit ​​groove 1321 are engaged, the transverse protrusion 1315 and the transverse groove 1325 engage to completely seal the opening 13.

[0036] The transverse groove 1325 is a non-through design in the thickness direction of the second sealing strip 132. The groove ends are formed by the second sealing strip 132 at both ends of the transverse groove 1325. When the transverse protrusion 1315 is engaged with the transverse groove 1325, the groove ends are fully engaged with both ends of the transverse protrusion 1315, which can ensure a complete seal on the opening 13.

[0037] The transverse protrusion 1315 is semi-cylindrical; it gradually rises from the bottom of the opening 13, and its other side is connected to the snap-fit ​​protrusion 1311 in an arc transition; the top of the transverse protrusion 1315 is higher than the top of the snap-fit ​​protrusion 1311. This structure of the transverse protrusion 1315, combined with the corresponding structure of the transverse groove 1325, ensures smooth engagement between the transverse protrusion 1315 and the transverse groove 1325.

[0038] The length of the transverse protrusion 1315 is greater than the thickness of the snap-fit ​​protrusion 1311, and the two transverse protrusions 1315 and the snap-fit ​​protrusion 1311 form a curved "I" shape. With this layout, when the transverse protrusion 1315 and the transverse groove 1325, and the snap-fit ​​protrusion 1311 and the snap-fit ​​groove 1321 are engaged, a tensile force is generated, making the bonding force greater; the bottoms (the beginning of the opening 13) of the first sealing strip 131 and the second sealing strip 132 are tightly attached and not easily separated; thus achieving a true sealing effect.

[0039] Based on the aforementioned sealing structure, this invention employs a one-time in-mold molding method to manufacture the food storage bag body 10, the sealing strips 131 and 132 forming the opening 13, and the protrusions 1311, 1315, and grooves 1321 and 1325 provided on the sealing strips 131 and 132. This effectively avoids the defects caused by secondary manual gluing and mold heating and solidification processes. The food storage bag described in the above structure and method of this invention is made of silicone material. While meeting the environmental protection requirements of food storage bags, it fully utilizes the characteristics of silicone material to achieve the sealing performance of the one-time in-mold molding and sealing structure, and meets the requirements for repeated use.

Claims

1. A silicone food storage bag sealing structure, wherein the food storage bag includes a food storage bag body, the food storage bag body having an opening at the top; a first sealing strip and a second sealing strip are provided on both sides of the opening; the first sealing strip has a snap-fit ​​protrusion, and the second sealing strip has a snap-fit ​​groove corresponding to the position of the snap-fit ​​protrusion, wherein the snap-fit ​​protrusion and the snap-fit ​​groove cooperate to initially seal the opening; characterized in that: A transverse protrusion is provided between the two ends of the snap-fit ​​protrusion and the bottom of the opening, which is transversely positioned relative to the snap-fit ​​protrusion; a transverse groove is provided between the two ends of the snap-fit ​​groove and the bottom of the opening, corresponding to the transverse protrusion; after the snap-fit ​​protrusion and the snap-fit ​​groove are engaged, the transverse protrusion and the transverse groove are engaged to completely seal the opening. The transverse groove is designed as a non-through groove in the thickness direction of the sealing strip, and the groove ends are formed by the sealing strip at both ends of the transverse groove. When the transverse protrusion and the transverse groove are engaged, the groove ends and the two ends of the transverse protrusion are fully engaged to achieve a complete seal of the opening.

2. The silicone food storage bag sealing structure according to claim 1, characterized in that: The lateral protrusion is semi-cylindrical; it gradually rises from the bottom of the opening, and the other side is connected to the snap-fit ​​protrusion in an arc transition; the top of the lateral protrusion is higher than the top of the snap-fit ​​protrusion.

3. The silicone food storage bag sealing structure according to claim 1 or 2, characterized in that: The length of the lateral protrusion is greater than the thickness of the snap-fit ​​protrusion, and the two lateral protrusions and the snap-fit ​​protrusion form a curved "I" shape.

4. A method for manufacturing a silicone food storage bag sealing structure, characterized in that: The silicone food storage bag sealing structure is the silicone food storage bag sealing structure according to any one of claims 1 to 3. The food storage bag body, the first sealing strip and the second sealing strip forming the opening, and the snap-fit ​​protrusion, the transverse protrusion, the snap-fit ​​groove and the transverse groove provided on the first sealing strip and the second sealing strip are formed by mold in one go.

Images