WO2025223539A1 - Packaging bag and laundry detergent packaged product - Google Patents

Abstract

A packaging bag and a laundry detergent packaged product. The packaging bag comprises: a flexible bag body (10) having a bottom edge (11), a top edge (12) opposite to the bottom edge, and a first side edge (13) and a second side edge (14) which extend between the top edge and the bottom edge and are opposite to each other, wherein the bottom edge is separately connected to the first side edge and the second side edge, the top edge is connected to the first side edge via a first bevel edge (15), and the top edge is connected to the second side edge via a second bevel edge (16); a rigid mouth part (20) arranged at the first bevel edge; and a carry handle (30) arranged at the second bevel edge; wherein the mouth part has a mouth part axis (A1), the carry handle has a carry handle axis (A2), and the inclination angle of the carry handle axis relative to the mouth part axis is in the range of 0° to 90°. The laundry detergent packaged product comprises the packaging bag and a laundry detergent.

Description

Packaging bags and laundry detergent packaging products Technical Field

This disclosure generally relates to the field of packaging technology, and more specifically, to a packaging bag suitable for containing contents such as laundry detergent, and a laundry detergent packaging product.

Background Technology

Laundry detergents are typically sold in flexible packaging bags made of at least one waterproof or water-resistant flexible film. Taking granular laundry detergent as an example, when a consumer is ready to use it, he/she will tear or cut an opening at the top corner of the flexible packaging bag, through which the granular detergent can be poured. After each use, this opening needs to be closed, for example, with a clip or rubber band to prevent the granular detergent from leaking out of the bag, while also preventing moisture/water from entering the bag and causing the granular detergent to clump or agglomerate inside. However, the size and shape of such openings formed by tearing or cutting can vary greatly, making it difficult to control the amount and rate at which the granular detergent is dispensed from such openings. Furthermore, closing such openings with clips or rubber bands can still lead to accidental leakage, and they may not form an effective moisture/water barrier.

In recent years, flexible packaging bags with spouts have become increasingly popular. These bags have a spout located at the top or upper corner for easy dispensing and better sealing of granular laundry detergent. In reality, consumers prefer to buy granular laundry detergent products with large-capacity flexible packaging bags. However, even with spout-type flexible packaging bags, the weight of the large-capacity bag makes it difficult for consumers to keep the bag stable while pouring the granular detergent through the spout, and it is also difficult to control the amount and speed of detergent dispensed from the spout.

Furthermore, for granular laundry detergent products with flexible packaging bags, consumers need to lift the bag and hold it at a slight angle for a period of time each time they use it to dispense a certain amount of detergent from the opening/nozzle. The flexible nature of the packaging bag not only makes it difficult to effectively control the amount and speed of detergent dispensed from the opening/nozzle, but also makes it difficult to maintain the bag's angle during dispensing, or requires considerable attention and effort to do so. This leads to inconvenience and fatigue for consumers, resulting in a poor user experience.

Summary of the Invention

The purpose of this disclosure is to address at least one aspect of the aforementioned problems and defects existing in the prior art.

According to one aspect of this disclosure, a packaging bag is provided, comprising:

A flexible bag body having a bottom edge, a top edge opposite to the bottom edge, and opposing first and second side edges extending between the top edge and the bottom edge, wherein the bottom edge connects the first side edge and the second side edge respectively, the top edge connects the first side edge via a first inclined edge, and the top edge connects the second side edge via a second inclined edge.

A rigid mouth portion, wherein the mouth portion is disposed at the first inclined side; and

A handle, wherein the handle is disposed at the second inclined side;

The mouth part has a mouth part axis, the handle has a handle axis, and the tilt angle of the handle axis relative to the mouth part axis is in the range of 0° to 90°.

According to some exemplary embodiments of this disclosure, the angle of inclination of the handle axis relative to the mouth axis is 30°.

According to some exemplary embodiments of this disclosure, the mouth axis is perpendicular to the first inclined side.

According to some exemplary embodiments of this disclosure, the mouth is disposed at the center of the first inclined side.

According to some exemplary embodiments of this disclosure, the flexible bag body has a diagonal extending from the junction of the second side and the bottom side to the first inclined side, and the angle of inclination of the mouth axis relative to the diagonal is in the range of 15° to 75°.

According to some exemplary embodiments of the present disclosure, the mouthpiece further includes: a mouth body defining a dispensing channel; a shoulder integrally formed with the mouth body; and a screw cap removably covering the mouth body; wherein the shoulder has a length along the first inclined side in the range of 30 mm to 70 mm; the diameter of the dispensing channel is in the range of 20 mm to 50 mm; and the length of the dispensing channel is in the range of 20 mm to 50 mm.

According to some exemplary embodiments of this disclosure, the handle is rigid, and the handle further includes: a through portion extending through the flexible bag body; and a peripheral portion defining the through portion; wherein the peripheral portion forms at least two finger receiving grooves.

According to some exemplary embodiments of this disclosure, the flexible bag body includes a first sheet and a second sheet, the first sheet and the second sheet having the same shape, and the first sheet and the second sheet being joined together at least at the bottom edge, the first side edge and the second side edge to form a receiving space therebetween in the flexible bag body.

According to some exemplary embodiments of this disclosure, the flexible bag further includes: a bottom insert, the flexible bag being able to stand upright by the bottom insert; wherein the first sheet and the second sheet are joined together at least at the first side and the second side, and the first sheet, the second sheet and the bottom insert are joined together at the bottom edge to form a receiving space of the flexible bag therebetween, wherein the bottom insert can be folded in half and sandwiched between the first sheet and the second sheet.

According to some exemplary embodiments of this disclosure, the distance between the bottom edge and the top edge is less than the distance between the first side edge and the second side edge.

According to another aspect of this disclosure, a laundry detergent packaging product is provided, the product comprising:

The packaging bag as described in any of the foregoing embodiments; and

Laundry detergent, which is contained in the packaging bag.

According to embodiments of this disclosure, the laundry detergent is a granular laundry detergent, a liquid laundry detergent, or a fabric softener.

According to some exemplary embodiments of the present disclosure, the median weight particle size of the granular laundry detergent is in the range of 200 μm to 1000 μm, and the bulk density of the granular laundry detergent is in the range of 0.3 g/ ^cm³ to 0.9 g/ ^cm³ .

Other objects and advantages of this disclosure will become apparent from the following description of the disclosure with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the disclosure.

Attached Figure Description

The above and other aspects and features of this disclosure will become more apparent from the detailed description of exemplary embodiments thereof with reference to the accompanying drawings, in which:

Figure 1 is a simplified structural diagram of a packaging bag according to the present disclosure;

Figure 2 is a front structural diagram of a packaging bag according to an exemplary embodiment of the present disclosure;

Figure 3 is a schematic diagram of the bottom structure of a packaging bag according to an exemplary embodiment of the present disclosure.

Detailed Implementation

Exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the following descriptions of the exemplary embodiments are merely illustrative and are in no way intended to limit the present disclosure or its application or use. Those skilled in the art will understand that these embodiments merely illustrate exemplary ways in which the present disclosure can be implemented, and are not exhaustive. Furthermore, unless specifically stated otherwise, the relative arrangement of components, numerical expressions, and values set forth in these embodiments do not limit the scope of the present disclosure.

In this document, the same or similar reference numerals indicate the same or similar components. The following description of embodiments of this disclosure with reference to the accompanying drawings is intended to explain the technical content of this disclosure and should not be construed as a limitation thereof. Furthermore, in the following detailed description, numerous specific details are set forth to provide a comprehensive understanding of exemplary embodiments of this disclosure for ease of explanation. However, it will be apparent that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and apparatuses are illustrated to simplify the drawings.

Spatial terms (including, but not limited to, “below,” “above,” “bottom,” “top,” “under,” and “above”), if used herein, are used to facilitate the description of the spatial relationship of one element relative to another. Such spatial terms cover different orientations of an object in use or operation, other than the specific orientations shown in the figures and described herein. For example, if the object shown in the figures is flipped or turned over, then the portions previously described as being below or beneath other elements are above those other elements.

According to this disclosure, referring to Figures 1 to 3, a packaging bag 100 is provided. The packaging bag 100 mainly includes: a flexible bag body 10, a rigid spout 20, and a handle 30. Both the spout 20 and the handle 30 are disposed on the upper part of the flexible bag body 10. The spout 20 is configured to dispense contents (in an exemplary embodiment, granular laundry detergent) contained in the flexible bag body 10. The handle 30 is configured to dispense the contents in a stable and controllable manner via the spout 20 when a user lifts the packaging bag 10 using the handle 30. According to this disclosure, as shown in Figure 1, the spout 20 defines a spout axis A1, and the handle 30 defines a handle axis A2. An angle c is formed between the handle axis A2 and a plane P perpendicular to the spout axis A1, the angle c being less than 120 degrees.

In this article, the term "mouth axis" can refer to the central axis along which the main dispensing channels of the mouth are located. Typically, the mouth axis is substantially perpendicular to the plane where the mouth outlet is located. The term "handle axis" can refer to the line connecting the two farthest points of the handle, for example, in the case of a handle with a relatively regular shape, it can be the axis along its long side.

In this article, the term "flexible" can refer to packaging materials that are easily deformable and cannot maintain a fixed shape or stand upright at room temperature and atmospheric pressure due to their material properties (e.g., hardness). The term "rigid" can refer to materials that are not easily deformable and can maintain a fixed shape or stand upright at room temperature and atmospheric pressure due to their material properties (e.g., hardness).

In this document, the term "granular laundry detergent" may refer to a solid powder or granular laundry detergent, preferably a free-flowing powder or granular laundry detergent, such as a multi-purpose detergent or heavy-duty detergent for fabrics, as well as laundry aids such as bleaching actives, rinsing aids, additives, or pretreatment products.

Figure 1 is a simplified structural diagram of a packaging bag according to the present disclosure. Figures 2 and 3 are schematic diagrams of the front and bottom structures of a packaging bag according to an exemplary embodiment of the present disclosure, respectively. It should be noted that, for clarity, dashed lines are used in the figures to represent axes (e.g., including but not limited to the mouth axis A1 and the handle axis A2), orientation reference lines (e.g., including but not limited to the horizontal reference line H and the vertical reference line perpendicular to the horizontal reference line), and other auxiliary lines (e.g., including but not limited to the plane P perpendicular to the mouth axis A1), etc.

Specifically, as shown in Figures 1 to 3, according to an exemplary embodiment of this disclosure, in the packaging bag 100, the flexible bag body 10 has a bottom edge 11, a top edge 12 opposite to the bottom edge 11, and opposite first side edges 13 and second side edges 14 extending between the top edge 12 and the bottom edge 11. As shown, a spout 20 is provided at the corner of the top edge 12 near the first side edge 13, and the spout axis A1 of the spout 20 forms a first tilt angle α relative to the bottom edge 11 of the flexible bag body 10 (or relative to a horizontal reference line H parallel to the bottom edge 11). A handle 30 is provided at the corner of the top edge 12 near the second side edge 14, and the handle axis A2 of the handle 30 forms a second tilt angle b relative to the bottom edge 11 of the flexible bag body 10 (or relative to a horizontal reference line parallel to the bottom edge 11). The angle c between the handle axis A2 and the plane P perpendicular to the spout axis A1 is equivalent to the sum of the first tilt angle α and the second tilt angle b, that is, c = a + b.

It should be noted that, in the illustrated embodiment, the various sides of the flexible bag body 10 (including but not limited to the bottom side 11, top side 12, first side 13 and second side 14, and the first inclined side 15 and second inclined side 16, which will be mentioned below) have a substantially linear shape, but this disclosure is not limited thereto. For example, these sides may also adopt other shapes (e.g., corrugated shape or serrated line shape, etc.).

According to this disclosure, the first tilt angle α is in the range of 0 to 90 degrees, and the second tilt angle b is in the range of 0 to 90 degrees. Preferably, the first tilt angle α is in the range of 15 to 75 degrees, while the second tilt angle b is in the range of 5 to 85 degrees. More preferably, the first tilt angle α is in the range of 30 to 45 degrees, while the second tilt angle b is in the range of 15 to 75 degrees. According to an exemplary embodiment, the first tilt angle α can be 30 degrees, and the second tilt angle b can be 30 degrees. In this case, the angle c between the handle axis A2 and the plane P perpendicular to the mouth axis A1 can be 60 degrees. Of course, in some embodiments, the first tilt angle α can be substantially 0 degrees (i.e., the mouth axis A1 of the mouth 20 is substantially parallel to the bottom edge 11 of the flexible bag body 10), in which case the mouth 20 is located at the first side 13. In some embodiments, the first tilt angle α can be substantially 90 degrees (i.e., the mouth axis A1 of the mouth portion 20 is substantially perpendicular to the bottom edge 11 of the flexible bag body 10), in which case the mouth portion 20 can be located at the top edge 12. Meanwhile, in some embodiments, the second tilt angle b can be substantially 0 degrees, in which case the handle axis A2 of the handle 30 is substantially parallel to the bottom edge 11 of the flexible bag body 10. In other embodiments, the second tilt angle b can be substantially 90 degrees, in which case the handle axis A2 of the handle 30 is substantially perpendicular to the bottom edge 11 of the flexible bag body 10.

Table 1 shows the test data obtained when the second tilt angle b of the handle 30 is set to 30 degrees, and the first tilt angle a of the mouth 20 is set to different values within the range of 0 to 90 degrees. During the test, when the packaging bag 100 is rotated 90 degrees and suspended for 3 seconds, the three sets of dispensing amounts of contents from the mouth 20 of the packaging bag 100 and their average dispensing amounts are recorded. In the table, the unit of the column for "range of values of the first tilt angle a of the mouth" is degrees (°), and the units of the columns for "average dispensing amount" and "dispensing amount" are grams (g).

Table 1

As can be seen from Table 1, when the second tilt angle b of the handle 30 is 30 degrees, a more ideal distribution can be achieved when the first tilt angle a of the mouth 20 is within the range of 7.5 degrees to 60 degrees (preferably within the range of 15 degrees to 60 degrees). Accordingly, based on c = a + b, the included angle c is within the range of 37.5 degrees to 90 degrees (especially within the range of 45 degrees to 60 degrees).

In some alternative embodiments, the handle 30 is designed such that its handle axis A2 can be substantially parallel to the top edge 12 of the flexible bag body 10, while the handle 30 is provided to be formed near the top edge 12 and located approximately at the center of the top edge 12.

According to this disclosure, in the packaging bag 100, the spout 20 is located on the top edge 12 of the flexible bag body 10 near the first side edge 13. The handle 30 is located on the top edge 12 of the flexible bag body 10 near the second side edge 14. Specifically, in the exemplary embodiments shown in Figures 1 to 3, the top edge 12 of the flexible bag body 10 is connected to the first side edge 13 via a first inclined edge 15, and the spout 20 is attached to the first inclined edge 15. Preferably, the spout axis A1 of the spout 20 can be perpendicular to the first inclined edge 15. Meanwhile, the top edge 12 of the flexible bag body 10 is connected to the second side edge 14 via a second inclined edge 16, and the handle 30 is formed near the second inclined edge 16. Preferably, the handle axis A2 of the handle 30 can be parallel to the second inclined edge 16. Of course, in some other embodiments, the flexible bag body 10 may not have the first and second bevels. In this case, the mouth 20 may be formed directly at the corner of the top edge 12 and the first side edge 13, and the handle 30 may be formed near the corner of the top edge 12 and the second side edge 14, as long as it does not affect the included angle between the mouth 20 and the handle 30.

As can be seen from the present disclosure, by providing a spout 20 and a handle 30 on the upper part of the flexible bag body 10, and by designing an appropriate angle range between the spout 20 and the handle 30 (for example, the angle c between the handle axis A2 and the plane P perpendicular to the spout axis A1 is less than 120 degrees, preferably in the range of 60 degrees to 90 degrees), it is possible to achieve easy and controllable distribution of the contents contained in the packaging bag, so as to form a stable and continuous flow of the contents at an appropriate flow rate during the distribution process.

More specifically, according to embodiments of this disclosure, as shown in Figures 1 to 3, the flexible bag 10 includes at least a first sheet 10a and a second sheet 10b, which may have the same shape. The first sheet 10a and the second sheet 10a are joined together at least at the bottom edge 11, the first side edge 13, and the second side edge 14 to form a receiving space for the flexible bag 10 therebetween. Further, in some embodiments, the flexible bag 10 may also include a bottom insert 10c. The flexible bag 10 is self-standing due to the bottom insert 10c. Specifically, the first sheet 10a and the second sheet 10b are joined together at least at the first side edge 13 and the second side edge 14, and the first sheet 10a, the second sheet 10b, and the bottom insert 10c are joined together at the bottom edge 11 to form a receiving space for the flexible bag 10 therebetween, wherein the bottom insert 10c can be folded in half and sandwiched between the first sheet 10a and the second sheet 10a. According to an exemplary embodiment of this disclosure, the flexible bag body 10 is composed of a first sheet 10a, a second sheet 10b, and a insert 10c. In some other embodiments not illustrated, the flexible bag body 10 may also be composed only of the first sheet 10a and the second sheet 10b, i.e., without the insert.

According to this disclosure, the first sheet and/or the second sheet and/or the insert of the flexible bag body 10 may be formed of at least one flexible membrane material, wherein the flexibility coefficient (elastic modulus) of the flexible membrane material is in the range of 100 MPa (N/mm ² ) to 1500 MPa (N/mm ² ), preferably in the range of 400 MPa (N/mm ² ) to 1100 MPa (N/mm ² ); and the thickness of the flexible membrane material is in the range of 20 microns to 250 microns, preferably in the range of 100 microns to 160 microns.

According to this disclosure, the first sheet and/or second sheet and/or insert of the flexible bag body can be made of a multilayer or double-layer composite film. The inner layer is in contact with the laundry detergent contained in the flexible bag body, while the outer layer forms the outermost surface of the flexible bag body. For example, in an embodiment using a multilayer composite film, the outer layer is preferably polyester, the inner layer is preferably polyethylene, and the middle layer is preferably nylon. In another embodiment using a multilayer composite film, the outer layer is preferably uniaxially oriented polyethylene, the inner layer is preferably low-density polyethylene, and the middle layer is preferably biaxially oriented polyethylene. In an embodiment using a double-layer composite film, the outer layer is preferably polyester, and the inner layer is preferably polyethylene. In another embodiment using a double-layer composite film, the outer layer is preferably nylon, and the inner layer is preferably polyethylene. Of course, the composite film can also be made from recyclable/renewable materials of the above-mentioned materials. Of course, in other embodiments, the first sheet and/or second sheet and/or insert of the flexible bag body can also be made of any suitable flexible film and/or composite film material as needed, and this disclosure does not impose any limitations.

Furthermore, the first and/or second sheets and/or part, multiple parts, or all of the insert of the flexible bag body may be coated or uncoated, treated or untreated, processed or unprocessed in any manner known in the art. The flexible film and/or composite film materials used to manufacture the flexible bags disclosed herein may be formed in any manner known in the art and may be joined together using any kind of joining or sealing method known in the art, including, for example, heat sealing (e.g., conductive sealing, pulse sealing, ultrasonic sealing, etc.), welding, curling, bonding, adhesion, etc., and any combination thereof.

More specifically, according to embodiments of this disclosure, as shown in Figures 1 to 3, the rigid nozzle 20 includes a nozzle body. The nozzle body is cylindrical and defines a cylindrical dispensing channel therein. The nozzle body of the nozzle 20 communicates with the internal receiving space of the flexible bag 10 and is configured to dispense particulate laundry detergent from the internal receiving space of the flexible bag 10. The diameter of the nozzle body is in the range of 20 mm to 50 mm, preferably, the opening diameter of the nozzle body is in the range of 20 mm to 30 mm, more preferably 21 mm to 28 mm, and most preferably 22 mm to 26 mm. Testing has shown that rigid nozzle bodies with opening diameters within the above ranges are particularly suitable for dispensing particulate laundry detergent. If the nozzle body opening diameter is less than 20 mm, for example, 15 mm, the volumetric flow rate for dispensing particulate laundry detergent is too slow and may result in insufficient dispensing. If the nozzle body opening diameter is greater than 30 mm, for example, 33 mm, the volumetric flow rate for dispensing particulate laundry detergent is too fast and may result in excessive dispensing. The height of the mouthpiece is in the range of 20mm to 50mm, preferably in the range of 30mm to 40mm, and more preferably in the range of 32mm to 38mm.

According to this disclosure, the rigid spout 20 also includes a rigid shoulder. The shoulder is integrally formed with the spout body and is located on both sides of the base of the spout body, and the spout 20 is attached to the flexible bag body 10 via the shoulder (e.g., to the first inclined side 15 of the flexible bag body 10 in the exemplary embodiment shown). In the exemplary embodiment, the spout 20 may be heat-sealed between the first sheet 10a and the second sheet 10b of the flexible bag body 10 via the shoulder. The length of the shoulder along the flexible bag body 10 (e.g., the first inclined side 15 of the flexible bag body 10 in the exemplary embodiment shown in FIG. 2) is in the range of 30 mm to 70 mm. By setting the length of the shoulder within the aforementioned range, it is possible to provide structural support near the base of the spout body while dispensing particulate laundry detergent without obstruction and effectively preventing dust generation during the dispensing process.

According to this disclosure, the rigid mouthpiece 20 may also include a cap (not shown). The cap removably covers the mouthpiece body. For example, the cap is removably engaged to the mouthpiece body of the rigid mouthpiece 20 via an internal thread that engages with a corresponding external thread on the mouthpiece body to close the dispensing channel in the mouthpiece body and prevent accidental leakage of particulate laundry detergent.

Compared to the flexible film/composite film used to form the flexible bag body 10 itself, the mouthpiece and/or shoulder and/or cap of the mouthpiece 20, as described above, has a relatively rigid structure and can be made of any suitable rigid material, such as glass, metal, polymer, etc., but preferably of polymer. Specifically, the mouthpiece and/or shoulder and/or cap can be made of the same or different materials. Preferably, each of them is independently made of a group selected from polypropylene (PP), polyethylene (PE), polycarbonate (PC), polyamide (PA), polyethylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), and combinations thereof.

Specifically, according to embodiments of this disclosure, in the packaging bag 100, the handle 30 can be designed such that there is a certain distance between the top of the handle 30 and the top edge 12 of the flexible bag body 10, which is typically less than 40 mm, preferably 30 mm. More specifically, as shown in Figures 1 to 3, the handle 30 is generally ear-shaped. The handle 30 may include a peripheral portion and a through portion defined by the peripheral portion, the through portion penetrating the flexible bag body 10. The peripheral portion has at least two finger receiving grooves 33 formed on its inner periphery toward the through portion. The handle 30 can be heat-sealed between the first sheet 10a and the second sheet 10b of the flexible bag body 10 via the outer periphery of the peripheral portion. According to this disclosure, the handle 30 can be rigid, for example, the handle 30 can be made of a plastic material such as polypropylene or polyethylene or pulp. In some alternative embodiments, the handle can also be a through hole formed by cutting/piercing one or more sealed portions of the flexible bag body 10 (i.e., a completely open space through which fingers and/or thumbs can be inserted).

According to this disclosure, the packaging bag 100 is substantially rectangular in shape, except for the first inclined side 15 where the mouth portion 20 is located and the second inclined side 15 where the handle is located. In a preferred exemplary embodiment, the distance between the bottom edge 11 and the top edge 12 of the flexible bag body 10 is less than the distance between the first side edge 13 and the second side edge 14; that is, when the packaging bag 100 is standing, the height of the packaging bag is less than its width. In some alternative embodiments, the distance between the bottom edge 11 and the top edge 12 of the flexible bag body 10 is greater than the distance between the first side edge 13 and the second side edge 14; that is, when the packaging bag 100 is standing, the height of the packaging bag is greater than its width. In other alternative embodiments, the distance between the bottom edge 11 and the top edge 12 of the flexible bag body 10 is equal to the distance between the first side edge 13 and the second side edge 14; that is, when the packaging bag 100 is standing, the height of the packaging bag is equal to its width.

According to another aspect of this disclosure, a laundry detergent packaging product is also provided. Specifically, the laundry detergent packaging product includes: a packaging bag 100 as described in any of the foregoing embodiments, and laundry detergent contained in the packaging bag 100.

According to this disclosure, although granular laundry detergents are used as examples of laundry detergents in the foregoing aspects and/or embodiments, the laundry detergents mentioned herein may also be liquid laundry detergents or fabric softeners. Furthermore, one or more of the following additives may be added to these laundry detergents: surfactants, softeners, defoamers, foaming agents, whitening agents, stain-removing additives, etc.

According to this disclosure, in embodiments where the laundry detergent is a granular laundry detergent, the granular characteristics of the laundry detergent may be that the median weight particle size (Dw50) is in the range of 200 μm to 1000 μm, preferably in the range of 250 μm to 950 μm, and more preferably in the range of 300 μm to 850 μm. The granular characteristics of the laundry detergent may also be that the bulk density is in the range of 0.3 g/ ^cm³ to 0.9 g/ ^cm³ , preferably in the range of 0.35 g/ ^cm³ to 0.8 g/ ^cm³ .

According to this disclosure, the packaging bag 100 may further include a filling opening (not shown). The filling opening is formed on the top edge 12 of the flexible bag body 10 and is located between the spout 20 and the handle 30. In the manufacturing process of the packaging bag 100, firstly, except for the filling opening located between the spout 20 and the handle 30, the first sheet 10a, the second sheet 10b, and the bottom insert 10c are sealed; then, laundry detergent is filled into the flexible bag body through the filling opening, and then the filling opening is sealed to form the final laundry detergent package product.

According to another aspect of this disclosure, in order to improve the user experience of consumers using packaging bags and/or laundry detergent packaging products, and to reduce inconvenience and fatigue during use, this disclosure also provides an ergonomic packaging bag design. It should be noted that the ergonomic packaging bag design provided by this disclosure can be applied to the packaging bags and/or granular laundry detergent packaging products described in the various embodiments described above. That is, the ergonomic packaging bag design provided by this disclosure can have or encompass the various features and/or advantages of the packaging bags and/or laundry detergent packaging products described in the various embodiments described above.

Specifically, taking the exemplary embodiment shown in FIG2 as an example, the packaging bag 100 includes: a flexible bag body 10, a rigid spout 20, and a handle 30. The flexible bag body 10 has a bottom edge 11, a top edge 12 opposite to the bottom edge 11, and opposite first side edges 13 and second side edges 14 extending between the top edge 12 and the bottom edge 11. The bottom edge 11 connects to the first side edge 13 and the second side edge 14, the top edge 12 connects to the first side edge 13 via a first inclined edge 15, and the top edge 12 connects to the second side edge 13 via a second inclined edge 16. According to this embodiment, the spout 20 is disposed at the first inclined edge 15, and the handle 30 is disposed at the second inclined edge 16. The spout 20 has a spout axis A1, the handle 30 has a handle axis A2, and the flexible bag body 10 has a diagonal extending from the connection between the second side edge 14 and the bottom edge 11 to the first inclined edge 15. According to this disclosure, in order to conform to ergonomic design, experiments have shown that the tilt angle e of the handle axis A2 relative to the mouth axis A1 can be in the range of 0° to 90°. For example, the tilt angle of the handle axis A2 relative to the mouth axis A1 can be 30°. Preferably, the mouth axis A1 can be perpendicular to the first inclined side 15. Preferably, the mouth 20 can be located at the center of the first inclined side 15. To further conform to ergonomic design, experiments have shown that the tilt angle of the mouth axis A1 of the mouth 20 relative to the diagonal can be in the range of 15° to 75°. By applying ergonomics to the design of the packaging bags and/or laundry detergent packaging products provided by this disclosure, through the aforementioned design of the flexible bag body and/or mouth and/or handle in terms of shape, structure, layout and/or relative positional relationship, the packaging bags and/or laundry detergent packaging products provided by this disclosure can reduce inconvenience and fatigue for consumers during use, thereby improving the user experience.

The dimensions and values described herein should not be construed as strictly limited to the precise numerical values cited. Rather, unless otherwise stated, each dimension is intended to represent the listed value and a range of functionally equivalent values around that value. For example, a dimension disclosed as “10 mm” is intended to represent “approximately 10 mm”.

While some embodiments of this disclosure have been shown and described, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of this disclosure, the scope of which is defined by the claims and their equivalents.

Claims (13)

A packaging bag, characterized in that the packaging bag comprises: A flexible bag body having a bottom edge, a top edge opposite to the bottom edge, and opposing first and second side edges extending between the top edge and the bottom edge, wherein the bottom edge connects the first side edge and the second side edge respectively, the top edge connects the first side edge via a first inclined edge, and the top edge connects the second side edge via a second inclined edge. A rigid mouth portion, wherein the mouth portion is disposed at the first inclined side; and A handle, wherein the handle is disposed at the second inclined side; The mouth part has a mouth part axis, the handle has a handle axis, and the tilt angle of the handle axis relative to the mouth part axis is in the range of 0° to 90°. The packaging bag according to claim 1 is characterized in that, The angle of inclination of the handle axis relative to the mouth axis is 30°. The packaging bag according to claim 1 is characterized in that, The mouth axis is perpendicular to the first hypotenuse. The packaging bag according to claim 1 is characterized in that, The mouth is located at the center of the first hypotenuse. The packaging bag according to claim 1 is characterized in that, The flexible bag has a diagonal extending from the junction of the second side and the bottom side to the first oblique side, and the angle of inclination of the mouth axis relative to the diagonal is in the range of 15° to 75°. According to claim 1, the packaging bag is characterized in that the mouth portion further comprises: Mouth body, the mouth body defining a dispensing channel; The shoulder, which is integrally formed with the mouth body; and A screw cap that removably covers the mouthpiece; Wherein, the length of the shoulder along the first inclined side is in the range of 30mm to 70mm; the diameter of the dispensing channel is in the range of 20mm to 50mm; and the length of the dispensing channel is in the range of 20mm to 50mm. The packaging bag according to claim 1, wherein the handle is rigid, and the handle further comprises: The through portion extends through the flexible bag body; and The peripheral portion defines the through portion; The peripheral portion has at least two finger receiving grooves. The packaging bag according to any one of claims 1 to 7 is characterized in that, The flexible bag includes a first sheet and a second sheet, the first sheet and the second sheet having the same shape, and the first sheet and the second sheet being joined together at least at the bottom edge, the first side edge and the second side edge to form a receiving space therebetween in the flexible bag. The packaging bag according to claim 8, wherein the flexible bag body further comprises: The flexible bag body can stand upright by inserting a bottom; The first sheet and the second sheet are joined together at least at the first and second sides, and the first sheet, the second sheet and the insert are joined together at the bottom edge to form a receiving space for the flexible bag body therebetween, wherein the insert can be folded in half and sandwiched between the first sheet and the second sheet. The packaging bag according to claim 8 is characterized in that, The distance between the bottom edge and the top edge is less than the distance between the first side edge and the second side edge. A granular laundry detergent packaging product, characterized in that the product comprises: The packaging bag as described in any one of claims 1-10; and Laundry detergent, which is contained in the packaging bag. The product according to claim 11 is characterized in that, The laundry detergent is a granular laundry detergent, a liquid laundry detergent, or a fabric softener. The product according to claim 12 is characterized in that, The median weight particle size of the granular laundry detergent is in the range of 200 μm to 1000 μm, and the bulk density of the granular laundry detergent is in the range of 0.3 g/ ^cm³ to 0.9 g/ ^cm³ .