How to fold a liquid bag and the folded liquid bag

Abstract

This invention provides a liquid bag folding method, comprising: Step A, folding the first and third parts outwards respectively, overlapping them on the second part, so that the outlet is located on the same side as the inlet; Step B, during the outward folding of the first and third parts in Step A, when the upper part of the inlet or outlet is covered by the bag body, folding the bag body covering the upper part of the inlet and outlet outwards to expose the inlet and outlet; Step C, folding the bag body after Step B in a Z-shape to reduce the distance between the inlet and outlet while maintaining the exposed state of the inlet and outlet. This liquid bag folding method, by flipping the inlet and outlet, which are located on two different surfaces, onto the same surface, not only shortens the straight-line distance between the inlet and outlet but also significantly shortens the lateral and vertical distances between them. This invention also provides a folded liquid bag.

Description

Technical Field

[0001] This invention relates to the field of filling and processing, and in particular to a method for folding liquid bags and the folded liquid bag. Background Technology

[0002] Liquid filling bags (also called liquid bags) such as Figure 1 As shown, a flat bag is used, with the top center of the front side serving as the inlet 11 and the lower right side of the back side as the outlet 12. If the liquid bag is divided into three equal parts horizontally, the inlet 11 and outlet 12 are located in different divisions (located in the second part 22 and the third part 23, respectively). During the filling process, the inlet and outlet of the liquid bag need to be positioned and clamped. However, since the inlet and outlet of the liquid bag are located on different sides, and the size of the liquid bag after being laid flat is relatively large, it is difficult to position and fix the entire liquid bag and its inlet and outlet. Summary of the Invention

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a liquid bag folding method and a folded liquid bag, which folds the inlet and outlet to the same side and greatly reduces the distance between the inlet and outlet to facilitate conveying and positioning, thereby solving the problem that the inlet and outlet of the material bag are on different sides and are not easy to position and fix.

[0004] To address the aforementioned technical problems, this invention provides a liquid bag folding method. The liquid bag's inlet is located at the top center of the front of the liquid bag, and the liquid bag's outlet is located at the lower right of the back of the liquid bag. When the liquid bag is divided into three equal parts horizontally, the inlet is located in the second part, and the outlet is located in the third part. The liquid bag folding method includes:

[0005] Step A: Fold the first and third parts outwards and overlap them on the second part so that the discharge port is on the same side as the inlet.

[0006] Step B: During the process of folding the first and third parts outward in step A, when the upper part of the inlet or outlet is covered by the bag, fold the bag covering the upper part of the inlet and outlet outward so that the inlet and outlet are exposed.

[0007] Step C: Fold the bag body after step B in a Z-shape to reduce the distance between the inlet and outlet while keeping the inlet and outlet exposed.

[0008] Optionally, in step A, the first part is folded outward and pressed onto the second part to form a first crease; and correspondingly in step B, the corner of the first part covered by the upper part of the feed port is folded outward at an angle (preferably 45 degrees) to expose the feed port.

[0009] Returning to step A, fold the third part outwards onto the first part to form the second crease.

[0010] Preferably, the third corner between the discharge port and the bottom corner is folded outward at an angle to cover the third part next to the discharge port.

[0011] Alternatively, in step A, the third part is first folded outward and pressed onto the second part to form a second crease; and correspondingly in step B, the corner of the third part covered by the upper part of the feed port is folded outward at an angle (preferably 45 degrees) to expose the feed port.

[0012] Returning to step A, the first part is folded outward and pressed onto the third part to form the first crease; and corresponding to step B, the corner of the first part covering the upper part of the inlet and outlet is folded outward at an angle (preferably 45 degrees) to expose the inlet and outlet.

[0013] In step C, the fold is either a positive Z-shape with the inlet facing upwards, or a negative Z-shape with the outlet facing upwards.

[0014] It also includes, after completing step C, folding the bottom of the folded liquid bag outwards near the outlet, and keeping a certain distance between the folded part and the outlet so that the outlet remains exposed.

[0015] The present invention also provides a folded liquid bag, which is folded according to the above folding method.

[0016] The liquid bag folding method provided by this invention can reduce the floor space of the liquid bag to about 20% of the unfolded area. After folding, the inlet and outlet, which are located on two different surfaces, are flipped onto the same surface, which not only shortens the straight-line distance between the inlet and outlet, but also significantly shortens the lateral and vertical distances between them. Furthermore, the folded liquid bag is easy to unfold due to the Z-shaped folding method, and the bag will not be compressed due to incomplete unfolding during the filling process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the planar structure of the liquid bag in an embodiment of the present invention;

[0018] Figure 2 This is a flowchart of the liquid bag folding method in an embodiment of the present invention;

[0019] Figure 3 This is a flowchart of the liquid bag folding method in an embodiment of the present invention;

[0020] Figure 4This is a schematic diagram of a Z-shaped fold in an embodiment of the present invention.

[0021] Figure 5 This is a schematic diagram of the reverse Z-shaped folding in an embodiment of the present invention.

[0022] Figure 6 This is a schematic diagram of the folded liquid bag in an embodiment of the present invention.

[0023] In the picture:

[0024] 11-Inlet; 12-Outlet;

[0025] 21 - Part One; 22 - Part Two; 23 - Part Three;

[0026] 31 - First crease; 32 - Second crease. Detailed Implementation

[0027] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 1-5 As shown, the present invention provides a liquid bag folding method. The inlet 11 of the liquid bag is located at the top center of the front of the liquid bag, and the outlet 12 of the liquid bag is located at the lower right of the back of the liquid bag. When the liquid bag is divided into three equal parts horizontally, the inlet is located in the second part 22, and the outlet is located in the third part 23. The liquid bag folding method includes:

[0029] Step A: Fold the first part 21 and the third part 23 outwards and overlap them on the second part 22 so that the discharge port 12 is located on the same side as the inlet port 11, that is, both the inlet port 11 and the discharge port are located on top, so as to facilitate the identification, positioning and clamping of the inlet port 11 and the discharge port 12 from above.

[0030] Step B: During the process of folding the first part 21 and the third part 23 outward in operation step A, when the upper part of the inlet 11 or outlet 12 is covered by the bag body, fold the bag body covering the upper part of the inlet 11 and outlet 12 outward so that the inlet 11 and outlet 12 are exposed.

[0031] Step C: Fold the bag body from step B into a Z-shape (see reference). Figure 4 As shown), this reduces the distance between the inlet and outlet while keeping them exposed.

[0032] Among them, optional, such as Figure 2 As shown, in step A, the first part 21 is first folded outward and pressed onto the second part 22 to form the first crease 31; and correspondingly in step B, the corner of the first part covered by the upper part of the feed port 11 is folded outward in an inclined (preferably 45-degree angle) manner to expose the feed port 11.

[0033] Returning to step A, fold the third part 23 outwards and press it onto the first part 21 to form the second crease 32. At this point, the folded liquid bag forms a long strip shape, and from top to bottom, it consists of the lower third part 23, the first part 21, and the second part 22.

[0034] Preferably, the third corner between the discharge port 12 and the bottom corner is folded outward at an angle to cover the third part next to the discharge port.

[0035] Optionally, such as Figure 3 As shown, in step A, the third part 23 is first folded outward and pressed onto the second part 22 to form a second crease 32; and correspondingly in step B, the corner of the third part 23 covered by the upper part of the feed port 11 is folded outward in an inclined (preferably 45-degree angle) manner to expose the feed port 11.

[0036] Returning to step A, the first part 21 is folded outward and pressed onto the third part 23 to form the first crease 31; and corresponding to step B, the corner of the first part covered by the upper part of the feed port 11 and the discharge port 12 is folded outward at an angle (preferably 45 degrees) so that the feed port 11 and the discharge port 12 are exposed.

[0037] In step C, the feed inlet 11 is folded in a Z-shape (e.g., ...). Figure 4 (As shown), or folded in a reverse Z-shape with the discharge port 12 on top. For example Figure 4 As shown, "feed inlet 11 is on top" means that the height of feed inlet 11 is higher than the height of discharge outlet 12. Figure 5 The discharge port 12 shown is above, meaning that the height of the discharge port 12 is higher than the height of the inlet port 11.

[0038] It also includes, after completing step C, folding the folded liquid bag outwards near the bottom of the outlet 12, and keeping a certain distance between the folded part and the outlet 12, so that the outlet 12 remains exposed.

[0039] like Figure 6As shown, the present invention also provides a folded liquid bag, which is folded according to the above folding method. In the liquid bag folded by the above method, the inlet 11 and the outlet 12 are both located on top and are not obstructed. The lateral and longitudinal distances between the inlet and the outlet are greatly shortened, thereby facilitating the identification, positioning and clamping of the inlet and outlet.

[0040] The liquid bag folding method provided by this invention can reduce the floor space of the liquid bag to about 20% of the unfolded area. After folding, the inlet and outlet, which are located on two different surfaces, are flipped onto the same surface, which not only shortens the straight-line distance between the inlet and outlet, but also significantly shortens the lateral and vertical distances between them. Furthermore, the folded liquid bag is easy to unfold due to the Z-shaped folding method, and the bag will not be compressed due to incomplete unfolding during the filling process.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] The above embodiments merely illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A method for folding a liquid bag, wherein the inlet of the liquid bag is located at the top center of the front of the liquid bag, and the outlet of the liquid bag is located at the lower right side of the back of the liquid bag; when the liquid bag is divided into three equal parts horizontally, the inlet is located in the second part, and the outlet is located in the third part; the method for folding the liquid bag includes: Step A: Fold the first and third parts outwards and overlap them on the second part so that the discharge port is on the same side as the inlet. Step B: During the process of folding the first and third parts outward in step A, when the upper part of the inlet or outlet is covered by the bag, fold the bag covering the upper part of the inlet and outlet outward so that the inlet and outlet are exposed. Step C: Fold the bag body after step B in a Z-shape to reduce the distance between the inlet and outlet while keeping the inlet and outlet exposed. In step A, the first part is folded outwards and pressed onto the second part to form the first crease; Corresponding to step B, the first corner of the upper part of the feed inlet is folded outward at a 45-degree angle to expose the feed inlet; Returning to step A, fold the third part outwards onto the first part to form the second crease; Fold the third corner between the discharge port and the bottom corner outward at an angle to cover the third part next to the discharge port; In step A, first fold the third part outwards and press it onto the second part to form the second crease; Correspondingly, in step B, the third corner of the upper part of the feed inlet is folded outward at a 45-degree angle to expose the feed inlet; Returning to step A, fold the first part outwards and press it onto the third part to form the first crease; Corresponding to step B, the first corner of the upper part of the feed inlet and the discharge outlet is folded outward at a 45-degree angle to expose the feed inlet and the discharge outlet.

2. The method according to claim 1, characterized in that, In step C, the fold is either a positive Z-shape with the inlet facing upwards, or a negative Z-shape with the outlet facing upwards.

3. The method according to claim 1, characterized in that, It also includes, after completing step C, folding the bottom of the folded liquid bag outwards near the outlet, and keeping a certain distance between the folded part and the outlet so that the outlet remains exposed.

4. A foldable liquid bag, characterized in that, It is folded according to the folding method described in any one of claims 1-3.

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