Sealed packaging bag

Abstract

The utility model discloses a kind of sealing packaging bag, comprising: bag body and sealing strip, the bag body has the first packaging area and the second packaging area being spaced apart along vertical direction, the first packaging area is located the second packaging area upper, and the bag face of the first packaging area is formed into the first folding and unfolding bag face being collapsible or unfolded along vertical direction;The sealing strip is located at the bag mouth of the bag body, and extend along the width direction of the bag body to close the bag body.The utility model can make the occlusal force distribution of sealing strip more uniform in length direction, avoid that sealing strip is opened by internal article, ensure that the sealing property of packaging bag whole is better.

Description

Technical Field

[0001] This utility model relates to the field of packaging bag technology, specifically to a sealed packaging bag. Background Technology

[0002] Sealed packaging bags (such as food preservation bags, daily storage bags, etc.) generally adopt a press-fit sealing strip structure. Its main structure achieves sealing through interlocking ribs and grooves. In related technologies, when an excessive amount of items (especially fluffy items) is put into the existing sealed bags, the outward expansion force generated by the items inside will be converted into a peeling force on the sealing strip. This results in an uneven distribution of the interlocking force of the sealing strip along its length, making the sealing strip easy to forcibly open and affecting the overall sealing performance of the packaging bag. Utility Model Content

[0003] This invention aims to at least partially solve the technical problem that when an excessive amount of items (especially fluffy items) is placed inside a sealed bag, the outward expansion force generated by the items inside is converted into a peeling force on the sealing strip, resulting in uneven distribution of the biting force of the sealing strip along its length. This makes the sealing strip easy to forcibly open, affecting the overall sealing performance of the packaging bag.

[0004] Therefore, one objective of this utility model is to provide a sealed packaging bag, comprising:

[0005] The bag body has a first packaging area and a second packaging area that are spaced apart in a vertical direction. The first packaging area is located above the second packaging area, and the bag surface of the first packaging area is formed as a first foldable or unfoldable bag surface that can be folded or unfolded in a vertical direction.

[0006] A sealing strip is provided at the opening of the bag body and extends along the width of the bag body to close the bag body.

[0007] Preferably, the first unfolding bag surface includes a plurality of first flat portions and a plurality of first pleats, which are connected sequentially along their width direction.

[0008] Preferably, the bag surface of the second packaging area is formed as a second foldable bag surface that can be folded or unfolded in the horizontal direction, and there is a separating bag surface between the second foldable bag surface and the first foldable bag surface, the area of ​​which is 1 / 3 to 1 / 4 of the area of ​​the first foldable bag surface.

[0009] Preferably, the second unfolding bag surface includes a plurality of second flat portions and a plurality of second pleats, which are connected sequentially along their own width direction.

[0010] Preferably, the area of ​​the first packing bag surface is approximately equal to the area of ​​the second packing bag surface.

[0011] Preferably, the sealing strip includes a male sealing strip and a female sealing strip, the male sealing strip being disposed on one side of the bag opening and the female sealing strip being disposed on the other side of the bag opening.

[0012] Preferably, the sealing male bone strip includes a first fixing strip and a rib, the first fixing strip being fixed to the inner side of the bag, and the rib protruding from the surface of the first fixing strip.

[0013] Preferably, the sealing strip includes a second fixing strip and a locking rib. The second fixing strip is fixed to the inner side of the bag, and the locking rib protrudes from the surface of the second fixing strip and can be engaged with the protruding rib.

[0014] Preferably, the engaging rib includes a groove and marking strips located on both sides of the groove in the width direction. When the rib is engaged in the groove, the marking strips and the rib are misaligned.

[0015] Preferably, the first fixing strip and the second fixing strip are made of transparent material, the marking strip is red, and the rib is black.

[0016] The above-described solution of this utility model has at least the following beneficial effects:

[0017] The sealed packaging bag provided in this embodiment of the utility model uses a sealing strip to seal the bag opening. When too many items are put into the bag, the bag surface of the first packaging area is formed as a first retractable bag surface that can be folded or unfolded in the vertical direction. This allows the first retractable bag surface to unfold with the items in the bag and form a certain buffer, so that the biting force of the sealing strip is more evenly distributed in the length direction, preventing the sealing strip from being stretched open by the internal items and ensuring better overall sealing of the packaging bag.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of the sealed packaging bag provided in the embodiments of this utility model;

[0021] Figure 2 This is a cross-sectional view of the sealing strip provided in the embodiment of this utility model;

[0022] Explanation of icon numbers:

[0023] 10. Bag body; 11. First packaging area; 12. First unfolding bag surface; 121. First flat part; 122. First pleated part; 13. Second packaging area; 14. Second unfolding bag surface; 141. Second flat part; 142. Second pleated part; 15. Separating bag surface; 20. Sealing strip; 21. Sealing male rib; 211. First fixing strip; 212. Raised rib; 22. Sealing female rib; 221. Second fixing strip; 222. Engaging rib; 2221. Groove; 2222. Labeling strip.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] The sealed packaging bag of this utility model embodiment is described in detail below with reference to the accompanying drawings.

[0031] Reference Figure 1 As shown, the sealed packaging bag provided in this embodiment of the present invention includes: a bag body 10 and a sealing strip 20. The bag body 10 has a first packaging area 11 and a second packaging area 13 arranged at intervals along the vertical direction. The first packaging area 11 is located above the second packaging area 13, and the bag surface of the first packaging area 11 is formed as a first foldable or unfoldable bag surface 12 that can be folded or unfolded along the vertical direction. The sealing strip 20 is provided at the bag opening of the bag body 10 and extends along the width direction of the bag body 10 to close the bag body 10.

[0032] In a specific embodiment of this application, both the bag body 10 and the sealing strip 20 can be made of plastic, and the sealing strip 20 and the bag body 10 can be connected and fixed using a heat-fusion process, resulting in better sealing performance between the sealing strip 20 and the bag body 10. Specifically, the first unfolding bag surface 12 includes multiple first flat portions 121 and multiple first pleats 122, which are sequentially connected along their width direction. By unfolding the first pleats 122, making them flush with the first flat portions 121, the bag body 10 has a larger capacity, thereby preventing the sealing strip 20 from being stretched open by the items inside the bag body 10, resulting in a better sealing effect.

[0033] Specifically, the bag surface of the second packaging area 13 is formed as a second foldable bag surface 14 that can be folded or unfolded in the horizontal direction, and there is a separating bag surface 15 between the second foldable bag surface 14 and the first foldable bag surface 12, the area of ​​the separating bag surface 15 being 1 / 3 to 1 / 4 of the area of ​​the first foldable bag surface 12; furthermore, the second foldable bag surface 14 includes a plurality of second flat portions 141 and a plurality of second pleated portions 142, the plurality of second flat portions 141 and the plurality of second pleated portions 142 being connected sequentially along their own width direction.

[0034] In this embodiment, by also setting the second packaging area 13 as a foldable or expandable second retractable bag surface 14, when more items need to be put into the bag body 10, more items can be contained and sealed through the expanded second retractable bag surface 14, making the bag body 10 have a larger storage space. It is understood that the area of ​​the dividing bag surface 15 can be set according to actual needs. When a larger storage space is needed, the area of ​​the dividing bag surface 15 can also be larger to achieve a larger storage capacity of the bag body 10.

[0035] Optionally, the area of ​​the first retractable bag surface 12 is approximately equal to the area of ​​the second retractable bag surface 14. The phrase "approximately equal to" in this context includes a certain tolerance, taking into account the measurement and the tolerances associated with the measurement of a specific quantity. It indicates an acceptable deviation range for a specific value as determined by a person skilled in the art. For example, "approximately equal to" can mean within one or more standard deviations, or within 3% or 5% of the area size. The following situations fall within the scope of "approximately equal to": for example, the area of ​​the first retractable bag surface 12 is greater than 1%, 2%, or 3% of the area of ​​the second retractable bag surface 14; or the area of ​​the first retractable bag surface 12 is less than 1%, 2%, or 3% of the area of ​​the second retractable bag surface 14.

[0036] Reference Figure 2As shown, the sealing strip 20 includes a male sealing strip 21 and a female sealing strip 22. The male sealing strip 21 is located on one side of the bag opening, and the female sealing strip 22 is located on the other side of the bag opening. This allows the male and female sealing strips 21 and 22 to be engaged when the bag opening needs to be sealed, thus achieving a secure seal. Furthermore, the male sealing strip 21 includes a first fixing strip 211 and a protruding rib 212. The first fixing strip 211 is fixed to the inner side of the bag body 10, and the protruding rib 212 protrudes from the first fixing strip 211. On the surface, the sealing female bone strip 22 includes a second fixing strip 221 and a locking rib 222. The second fixing strip 221 is fixed to the inner side of the bag body 10, and the locking rib 222 protrudes from the surface of the second fixing strip 221 and can be locked with the protruding rib 212. By locking and fixing the protruding rib 212 and the locking rib 222, the sealing male bone strip 21 and the sealing female bone strip 22 can seal the bag opening, and when used in conjunction with the first retractable bag surface 12, it can ensure that the bag body 10 can be sealed in place.

[0037] As an optional embodiment, the engaging rib 222 includes a groove 2221 and marking strips 2222 located on both sides of the groove 2221 in the width direction. When the protruding rib 212 is engaged in the groove 2221, the marking strips 2222 and the protruding rib 212 are misaligned with each other. Furthermore, the first fixing strip 211 and the second fixing strip 221 are made of transparent material, and the marking strip 2222 is red and the protruding rib 212 is black.

[0038] In this embodiment, by engaging the rib 212 within the groove 2221, the rib 212 and the label strip 2222 are misaligned, allowing the black rib 212 to be visible through the second fixing strip 221 and its own surface on the bag body 10, while the red label strip 2222 is visible through the first fixing strip 211 and its own surface on the bag body 10. After the sealing male rib 21 and sealing female rib 22 are engaged and fixed, the black rib 212 and the red label strip 2222 can be used to check whether they are properly engaged. By cooperating with the first retractable bag surface 12 for sealing, the bag body 10 can ensure a more thorough seal when sealing items.

[0039] The sealed packaging bag provided in this embodiment of the utility model uses a sealing strip 20 to seal the opening of the bag body 10. When too many items are put into the bag body 10, since the bag surface of the first packaging area 11 is formed as a first retractable bag surface 12 that can be folded or unfolded in the vertical direction, the first retractable bag surface 12 can unfold with the items in the bag body 10 and form a certain buffer, so that the biting force of the sealing strip 20 is more evenly distributed in the length direction, avoiding the sealing strip 20 being stretched open by the internal items, and ensuring better overall sealing of the packaging bag.

[0040] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A sealed packaging bag, characterized by, include: The bag body has a first packaging area and a second packaging area that are spaced apart in a vertical direction. The first packaging area is located above the second packaging area, and the bag surface of the first packaging area is formed as a first foldable or unfoldable bag surface that can be folded or unfolded in a vertical direction. A sealing strip is provided at the opening of the bag body and extends along the width of the bag body to close the bag body.

2. The sealed packaging bag according to claim 1, characterized in that, The first retractable bag surface includes a plurality of first flat portions and a plurality of first pleats, which are connected sequentially along their width direction.

3. The sealed packaging bag according to claim 1, characterized in that, The bag surface of the second packaging area is formed as a second foldable bag surface that can be folded or unfolded in the horizontal direction, and there is a separating bag surface between the second foldable bag surface and the first foldable bag surface, the area of ​​which is 1 / 3 to 1 / 4 of the area of ​​the first foldable bag surface.

4. The sealed packaging bag according to claim 3, characterized in that, The second expandable bag surface includes a plurality of second flat portions and a plurality of second pleats, which are connected sequentially along their own width direction.

5. The sealed packaging bag according to claim 3, characterized in that, The area of ​​the first packing bag surface is approximately equal to the area of ​​the second packing bag surface.

6. The sealed packaging bag according to claim 1, characterized in that, The sealing strip includes a male sealing strip and a female sealing strip. The male sealing strip is located on one side of the bag opening, and the female sealing strip is located on the other side of the bag opening.

7. The sealed packaging bag according to claim 6, characterized in that, The sealing male bone strip includes a first fixing strip and a rib. The first fixing strip is fixed to the inner side of the bag, and the rib protrudes from the surface of the first fixing strip.

8. The sealed packaging bag according to claim 7, characterized in that, The sealing strip includes a second fixing strip and a locking rib. The second fixing strip is fixed to the inner side of the bag, and the locking rib protrudes from the surface of the second fixing strip and can be locked with the protruding rib.

9. The sealed packaging bag according to claim 8, characterized in that, The engaging rib includes a groove and marking strips located on both sides of the groove in the width direction. When the rib is engaged in the groove, the marking strips and the rib are misaligned.

10. The sealed packaging bag according to claim 9, characterized in that, The first fixing strip and the second fixing strip are made of transparent material, the marking strip is black, and the rib is red.

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