Non-woven cloth packaging bag

Abstract

The utility model discloses a non-woven cloth packaging bag which comprises a packaging bag body made of composite sheets, the packaging bag body comprises a first face and a second face, the edges of the first face and the second face are connected to form a rectangular bag body with three sealed sides and one opened side, and the composite sheets comprise at least two layers of ultra-high molecular weight polyethylene non-woven cloth which are overlapped in a crossed mode. The surface density of the composite sheet is 70-80g / m < 2 >; the two handles are fixedly connected to the first face and the second face of the packaging bag body respectively. According to the scheme, the limitation of traditional non-woven fabric is broken through, the packaging bag is manufactured by adopting the composite sheet composed of the ultra-high molecular weight polyethylene non-woven fabric, the surface density of the composite sheet is limited, and the packaging bag is light in weight, resistant to abrasion, resistant to stretching, better in bearing effect and capable of bearing heavier objects, so that the super-soft, light and high-strength packaging bag is obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging bags, in particular to a non-woven fabric packaging bag. Background Art

[0002] There are many types of packaging bags, and the materials are generally polyethylene and polypropylene. Non-woven fabric is a practical, beautiful and environmentally friendly fabric that is used to make packaging bags, and the material is generally polypropylene.

[0003] Traditional non-woven fabrics have some shortcomings as packaging bags: they are not lightweight enough, have low strength and are easily torn and damaged, and their load-bearing capacity is similar to that of other paper and plastic bags, making them incapable of supporting heavier objects. Patent application number CN222041297U discloses a biodegradable, environmentally friendly non-woven packaging bag comprising a composite bag body with handles fixedly attached to the front and back of the composite bag body. The composite bag body includes a waterproof layer, a breathable layer, and a wear-resistant layer. However, the composite bag body's waterproof layer is made of polytetrafluoroethylene, the breathable layer is made of polyester, and the wear-resistant layer is made of nylon. The overall weight is still insufficient, and the bag's softness is average. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the utility model is to provide a non-woven fabric packaging bag that is simple in process, lightweight, high-strength and soft.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0006] A non-woven fabric packaging bag, comprising:

[0007] The packaging bag body is made of a composite sheet material. The packaging bag body includes a first surface and a second surface. The edges of the first surface and the second surface are connected to form a rectangular bag body with three sides sealed and one side open. The composite sheet material includes at least two layers of cross-stacked ultra-high molecular weight polyethylene non-woven fabrics. The surface density of the composite sheet material is 70-80g / m 2 ;

[0008] The two handles are respectively fixedly connected to the first surface and the second surface of the packaging bag body.

[0009] Preferably, the packaging bag body is made of a single composite sheet, and the middle part of the composite sheet is folded to form the first side and the second side of the packaging bag body. The middle folding position of the composite sheet is the bottom of the packaging bag body, and the left and right sides of the first side and the second side are respectively connected.

[0010] Preferably, the upper end of the composite sheet is provided with a first folding line and a second folding line in sequence from top to bottom horizontally, the lower end of the composite sheet is provided with a third folding line and a fourth folding line in sequence from bottom to top horizontally, the middle of the composite sheet is provided with a fifth folding line in sequence horizontally, and the left and right sides of the composite sheet are provided with a sixth folding line and a seventh folding line in sequence vertically.

[0011] Preferably, the composite sheet is folded along the fifth folding line to form the bottom of the packaging bag body; the upper end of the composite sheet is folded along the third folding line and the fourth folding line from top to bottom and hot pressed to form an opening seal at the opening of the packaging bag body, and the lower end of the composite sheet is folded along the third folding line and the fourth folding line from bottom to top and hot pressed to form another opening seal at the opening of the packaging bag body; the left and right sides of the composite sheet are folded along the sixth folding line and the seventh folding line respectively to form side seals on the left and right sides of the packaging bag body.

[0012] Preferably, the left and right side seals on the packaging bag body are fixed by a first side suture and a second side suture respectively to seal the left and right sides of the packaging bag body, and the first side suture and the second side suture are ultra-high strength polyethylene sewing threads.

[0013] Preferably, the two handles are respectively bonded and fixed to the first and second surfaces of the packaging bag body, and the handles are arranged in an inverted U shape, with the lower end of the handles located on the side of the packaging bag body close to the bottom of the bag, and the upper end of the handles exposed from the opening of the packaging bag body.

[0014] Preferably, the two handles are sewn to the first side and the second side of the packaging bag body respectively by handle stitching, and the handle stitching is ultra-high strength polyethylene sewing thread.

[0015] Preferably, the handle is a nylon braided rope.

[0016] Preferably, the composite sheet is made by hot-pressing two layers of orthogonally stacked ultra-high molecular weight polyethylene non-woven fabrics, and each layer of ultra-high molecular weight polyethylene non-woven fabric is made of ultra-high molecular weight polyethylene fibers pre-impregnated with water-based polyurethane resin.

[0017] Preferably, the specific strength of the ultra-high molecular weight polyethylene fiber is 36-42 cn / dtex, and the specific modulus of the ultra-high molecular weight polyethylene fiber is 1600-2000 cn / dtex.

[0018] Due to the adoption of the above technical solution, the present invention has the following beneficial effects: In the present invention, the limitations of traditional non-woven fabrics are broken through, and a composite sheet composed of ultra-high molecular weight polyethylene non-woven fabric is used to make a packaging bag, and the surface density of the composite sheet is limited. The weight is light, wear-resistant, and stretch-resistant, and the load-bearing effect is better, and heavier items can be carried, thereby obtaining an ultra-soft, lightweight, and high-strength packaging bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 It is a structural diagram of a composite sheet.

[0021] Reference numerals:

[0022] 1. Packaging bag body; 2. Handle; 3. Opening edge seal; 4. Side edge seal; 5. First side seam; 6. Second side seam; 7. Handle seam; 8. Composite sheet; 9. First folding line; 10. Second folding line; 11. Third folding line; 12. Fourth folding line; 13. Sixth folding line; 14. Seventh folding line; 15. Fifth folding line. DETAILED DESCRIPTION

[0023] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0026] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0027] like Figure 1 and Figure 2 As shown, the utility model discloses a non-woven fabric packaging bag, comprising:

[0028] The packaging bag body 1 is made of a composite sheet 8. The packaging bag body 1 includes a first surface and a second surface. The edges of the first surface and the second surface are connected to form a rectangular bag body with three sealed sides and one open side. The composite sheet 8 includes at least two layers of cross-stacked ultra-high molecular weight polyethylene non-woven fabric. The surface density of the composite sheet is 70-80g / m 2 Two handles 2 are fixedly connected to the first surface and the second surface of the packaging bag body 1 respectively.

[0029] Ultra-high molecular weight polyethylene fiber is light and high-strength, with a density of only 0.97g / cm 3 , lighter than water, but its specific strength and specific modulus are much higher than other high-performance fibers. In this way, a packaging bag is made by adopting a composite sheet composed of ultra-high molecular weight polyethylene non-woven fabric and limiting the surface density of the composite sheet, thereby obtaining an ultra-soft, lightweight and high-strength packaging bag.

[0030] In this embodiment, the composite sheet 8 is made by hot pressing two layers of ultra-high molecular weight polyethylene non-woven fabric orthogonally stacked at 0° / 90°, at a temperature of 80-90°C and a pressure of 1.5 MPa. Each layer of ultra-high molecular weight polyethylene non-woven fabric is made of ultra-high molecular weight polyethylene fibers pre-impregnated with water-soluble polyurethane resin, wherein the specific strength of the ultra-high molecular weight polyethylene fibers is 36-42 cn / dtex, and the specific modulus of the ultra-high molecular weight polyethylene fibers is 1600-2000 cn / dtex. The surface density of each layer of ultra-high molecular weight polyethylene non-woven fabric is 35-40 g / m 2 In this way, the packaging bag is light in weight, wear-resistant and stretch-resistant, has better load-bearing effect, and can carry heavier items.

[0031] The packaging bag body 1 is made of a single composite sheet 8. The middle part of the composite sheet 8 is folded to form the first side and the second side of the packaging bag body 1. The middle folded position of the composite sheet 8 is the bottom of the packaging bag body 1. The left and right sides of the first side and the second side are respectively connected.

[0032] Specifically, the upper end of the composite sheet 8 is provided with a first folding line 9 and a second folding line 10 in sequence from top to bottom horizontally, the lower end of the composite sheet 8 is provided with a third folding line 11 and a fourth folding line 12 in sequence from bottom to top horizontally, the middle of the composite sheet 8 is provided with a fifth folding line 15 in sequence horizontally, and the left and right sides of the composite sheet 8 are provided with a sixth folding line 13 and a seventh folding line 14 in sequence vertically.

[0033] More specifically, the first folding line 9 is 3 cm away from the upper end of the composite sheet 8, the second folding line 10 is 6 cm away from the upper end of the composite sheet 8, the third folding line 11 is 3 cm away from the lower end of the composite sheet 8, the fourth folding line 12 is 6 cm away from the lower end of the composite sheet 8, and the sixth folding line 13 and the seventh folding line 14 are respectively 3 cm away from the same side edges of the composite sheet 8.

[0034] When a single piece of composite sheet 8 is used to make the packaging bag main body 1, the composite sheet 8 is folded along the fifth folding line 15 to form the bottom of the packaging bag main body 1; the upper end of the composite sheet 8 is folded along the third folding line 11 and the fourth folding line 12 from top to bottom and hot pressed to form an opening seal 3 at the opening of the packaging bag main body 1, and the lower end of the composite sheet 8 is folded along the third folding line 11 and the fourth folding line 12 from bottom to top and hot pressed to form another opening seal 3 at the opening of the packaging bag main body 1, so as to ensure that the opening seal 3 is firmly adhered; the left and right sides of the composite sheet 8 are folded along the sixth folding line 13 and the seventh folding line 14 respectively to form the side seals 4 on the left and right sides of the packaging bag main body 1. In order to ensure the firmness of the left and right sides of the packaging bag main body 1, the side sealing edges 4 on the left and right sides of the packaging bag main body 1 are fixed by the first side stitching 5 and the second side stitching 6 respectively to seal the left and right sides of the packaging bag main body 1. The first side stitching 5 and the second side stitching 6 are ultra-high strength polyethylene sewing threads with a fineness of 400D, which are resistant to stretching and have better load-bearing effect, and can carry heavier items.

[0035] Two handles 2 are attached to the first and second sides of the bag body 1, respectively, using double-sided tape or other adhesive. They are arranged in an inverted U-shape, with the lower end of the handle 2 located on the side of the bag body 1 near the bottom, and the upper end of the handle 2 protruding from the opening of the bag body 1. The two handles 2 are sewn to the first and second sides of the bag body 1 with handle stitching 7, made of 400D ultra-high-strength polyethylene sewing thread. This creates a larger area between the handles 2 and the bag body 1, making them less susceptible to breakage and significantly increasing their load-bearing capacity. The handles 2 are made of braided nylon rope.

[0036] Example 1:

[0037] A non-woven fabric packaging bag, comprising: a packaging bag body 1, made of a composite sheet 8, the packaging bag body 1 comprising a first surface and a second surface, the edges of the first surface and the second surface being connected to form a rectangular bag body with three sealed sides and one open side, the composite sheet 8 comprising two layers of ultra-high molecular weight polyethylene non-woven fabrics stacked orthogonally at 0° / 90° and hot-pressed, the composite sheet having a surface density of 70-80 g / m 2 Two handles 2 are fixedly connected to the first surface and the second surface of the packaging bag body 1 respectively.

[0038] Comparative Example 1: This comparative example is a commercially available traditional composite polyethylene woven packaging bag.

[0039] The various properties of the packaging bags in Example 1 and Comparative Example 1 were tested. The standards and methods were based on GB / T8628-2013 Textiles - Preparation, marking and measurement of fabric specimens and garments in tests for determining dimensional change, GB / T43316.2-2023 Determination of resistance of plastics to environmental stress cracking (ESC) - Part 2: Constant tensile load method, and ISO

[0040] 13934-1:2013 Textiles. Tensile properties of fabrics. Part 1: Determination of maximum force and elongation at maximum force using the strip method", "GB / T 2792-2014 Test method for peel strength of adhesive tapes", "GB / T 1037-1988 Test method for water vapor permeability of plastic film and sheeting (cup method)", DSC differential scanning calorimetry and "GB / T 23318-2009 Textiles - Determination of puncture strength".

[0041] The test results of various properties of the fabrics in Example 1 and Comparative Example 1 are shown in Table 1 below:

[0042] Table 1: Test results of various properties of fabrics in Example 1 and Comparative Example 1

[0043]

[0044] The test results show that compared with the traditional composite polyethylene woven packaging bags on the market, the non-woven fabric packaging bags provided by this solution are made of composite sheets composed of ultra-high molecular weight polyethylene non-woven fabric. The packaging bags have low surface density, good tensile resistance, waterproofness and puncture resistance, and can carry heavier items. They are ultra-soft, lightweight and high-strength packaging bags.

[0045] All features described in the description, the appended claims and the drawings are important features of the present invention, whether alone or in any combination.

[0046] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "an implementation", "specific implementation", "other implementations", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment, implementation or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described above may also be combined in a suitable manner in any one or more embodiments, implementations or examples. The technical solutions recorded in this utility model also include technical solutions formed by any one or more specific features, structures, materials or characteristics described above, either alone or in combination.

[0047] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Ordinary technicians in this field can change, modify, replace, modify, delete some features, add features or re-combine features to form a technical solution in the above embodiments without departing from the principles and purpose of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the innovative principles of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A non-woven fabric packaging bag, characterized in that: include: The packaging bag body (1) is made of a composite sheet (8), the packaging bag body (1) includes a first surface and a second surface, the edges of the first surface and the second surface are connected to form a rectangular bag body with three sides sealed and one side open, the composite sheet (8) includes at least two layers of cross-stacked ultra-high molecular weight polyethylene non-woven fabric, and the surface density of the composite sheet is 70-80g / m 2 ; The two handles (2) are respectively fixedly connected to the first surface and the second surface of the packaging bag body (1).

2. A non-woven fabric packaging bag according to claim 1, characterized in that: The packaging bag body (1) is made of a single composite sheet (8), the middle portion of the composite sheet (8) is folded to form the first side and the second side of the packaging bag body (1), the middle folded position of the composite sheet (8) is the bottom of the packaging bag body (1), and the left and right sides of the first side and the second side are respectively connected.

3. The non-woven fabric packaging bag according to claim 2, characterized in that: The upper end of the composite sheet (8) is provided with a first folding line (9) and a second folding line (10) in sequence from top to bottom in the horizontal direction, the lower end of the composite sheet (8) is provided with a third folding line (11) and a fourth folding line (12) in sequence from bottom to top in the horizontal direction, the middle of the composite sheet (8) is provided with a fifth folding line (15) in the horizontal direction, and the left and right sides of the composite sheet (8) are provided with a sixth folding line (13) and a seventh folding line (14) in the vertical direction, respectively.

4. The non-woven fabric packaging bag according to claim 3, characterized in that: The composite sheet (8) is folded along the fifth folding line (15) to form the bottom of the packaging bag body (1); the upper end of the composite sheet (8) is folded from top to bottom along the third folding line (11) and the fourth folding line (12) and hot pressed to form an opening seal (3) at the opening of the packaging bag body (1); the lower end of the composite sheet (8) is folded from bottom to top along the third folding line (11) and the fourth folding line (12) and hot pressed to form another opening seal (3) at the opening of the packaging bag body (1); the left and right sides of the composite sheet (8) are folded along the sixth folding line (13) and the seventh folding line (14) respectively to form side seals (4) on the left and right sides of the packaging bag body (1).

5. The non-woven fabric packaging bag according to claim 4, characterized in that: The side sealing edges (4) on the left and right sides of the packaging bag body (1) are respectively fixed by a first side seam (5) and a second side seam (6) to seal the left and right sides of the packaging bag body (1); the first side seam (5) and the second side seam (6) are ultra-high strength polyethylene sewing threads.

6. The non-woven fabric packaging bag according to claim 1, characterized in that: The two handles (2) are respectively bonded and fixed to the first surface and the second surface of the packaging bag body (1); the handles (2) are arranged in an inverted U shape; the lower end of the handle (2) is located on the side of the packaging bag body (1) close to the bag bottom; and the upper end of the handle (2) is exposed from the opening of the packaging bag body (1).

7. The non-woven fabric packaging bag according to claim 6, characterized in that: The two handles (2) are respectively sewn to the first surface and the second surface of the packaging bag body (1) via handle sewing threads (7), and the handle sewing threads (7) are ultra-high-strength polyethylene sewing threads.

8. The non-woven fabric packaging bag according to claim 1, characterized in that: The handle (2) is a nylon braided rope.

9. The non-woven fabric packaging bag according to claim 1, characterized in that: The composite sheet (8) is made by hot-pressing and compounding two layers of orthogonally stacked ultra-high molecular weight polyethylene non-woven fabrics, and each layer of ultra-high molecular weight polyethylene non-woven fabric is made of ultra-high molecular weight polyethylene fibers pre-soaked in water-soluble polyurethane resin.

10. The non-woven fabric packaging bag according to claim 9, characterized in that: The specific strength of ultra-high molecular weight polyethylene fiber is 36-42cn / dtex, and the specific modulus of ultra-high molecular weight polyethylene fiber is 1600-2000cn / dtex.

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