Asymmetrical packaging belt

Abstract

The present invention breaks away from tradition and creatively installs a diagonal pattern set consisting of deep diagonal and shallow diagonal patterns inclined in different directions on the front and back of a packing belt, thereby improving the tensile strength of the packing belt under the condition of the same gram weight, and solving the problems existing in the existing technology. The asymmetric packing belt of the present invention has a front and a back, and further includes a diagonal pattern set (1), which includes deep diagonal patterns (11) inclined to one side and shallow diagonal patterns (12) inclined to the other side, where if the height of the diagonal patterns protruding from the packing belt surface is defined as h, the height of the deep diagonal patterns is h1 and the height of the shallow diagonal patterns is h2, with h1 > h2, and the diagonal pattern sets are installed on both the front and back.

Description

[Technical Field]

[0001] This invention relates to the field of packaging belt technology, and more particularly to the field of asymmetrical packaging belts. [Background technology]

[0002] Flat packing belts are a common packing material, generally made from polypropylene or polyester material for packing machines, and have friction patterns added to the front and back surfaces through a rolling process to increase their frictional performance.

[0003] Currently, a diamond grid design with four sides of equal height has been used for the friction pattern of flat packing belts for many years. Flat packing belts with such a diamond grid friction pattern have a certain level of friction performance and tensile strength. Under existing technology, the only way to increase the tensile strength of flat packing belts is generally to use packing belts with a higher gram weight. Currently, there is no desire or motivation in the industry to change the structure of flat packing belts, and higher gram weight flat packing belts mean that more raw materials are required, which not only increases the cost of using flat packing belts but is also not environmentally friendly.

[0004] The aforementioned technical problems present in existing technologies have become urgent challenges that engineers in this field must solve. [Overview of the project]

[0005] This invention breaks with tradition by arranging an original set of twill lines, consisting of deep and shallow twill lines tilted in different directions, on the front and back of the packaging belt, thereby improving the tensile strength of the packaging belt under the same gram weight conditions and solving problems present in existing technologies.

[0006] The present invention has a front and a back, and further includes an italic set, the italic set including a deep italic slant tilted to one side and a shallow italic slant tilted to the other side.

[0007] If we define h as the height of the twill protruding from the surface of the packing belt, then the height of a deep twill is h1, the height of a shallow twill is h2, and h1 > h2.

[0008] The present invention provides an asymmetrical packaging belt in which the aforementioned twill set is installed on both the front and back surfaces.

[0009] Preferably, adjacent deep italics are parallel to each other.

[0010] Preferably, the spacing between adjacent deep italics is the same.

[0011] Preferably, 0.1 mm ≤ h1 ≤ 0.7 mm.

[0012] Preferably, adjacent shallow italics are parallel to each other.

[0013] Preferably, the spacing between adjacent shallow italics is the same.

[0014] Preferably, the above-mentioned 0.005 mm ≤ h2 ≤ 2 / 3 h1 mm.

[0015] Preferably, the angles of inclination of the deep and shallow twill lines are equal to the angles of inclination of the vertical lines.

[0016] Preferably, adjacent deep twill lines are parallel to each other and spaced equally apart, and adjacent shallow twill lines are parallel to each other and spaced equally apart, and when viewed from a front projection, the angle formed by the deep twill lines located on the front and the deep twill lines located on the back is the same as the angle formed by the shallow twill lines located on the front and the shallow twill lines located on the back.

[0017] Preferably, adjacent deep twill lines are parallel to each other and spaced equally apart, and adjacent shallow twill lines are parallel to each other and spaced equally apart, so that on the same plane, the deep twill lines and shallow twill lines form a rhombus grid.

[0018] The present invention provides an asymmetric packaging belt having a front surface and a back surface, further comprising a diagonal texture set, wherein the diagonal texture set comprises deep diagonal textures inclined to one side and shallow diagonal textures inclined to the other side, if the height of the diagonal textures protruding from the surface of the packaging belt is defined as h, the height of the deep diagonal textures is h1, the height of the shallow diagonal textures is h2, and h1>h2, and the diagonal texture set is provided on both the front surface and the back surface. The asymmetric packaging belt disclosed in the present invention breaks with tradition, and can solve the problems existing in the prior art by creatively providing the diagonal texture set consisting of deep diagonal textures and shallow diagonal textures inclined in different directions on the front surface and the back surface of the packaging belt. [BRIEF DESCRIPTION OF THE DRAWINGS]

[0019] [Figure 1] Figure 1 is a schematic diagram of manufacturing a packaging belt by pressing using an embossing roll of the present invention. [Figure 2] Figure 2 is a schematic diagram of the embossing roll structure of the present invention. [Figure 3] Figure 3 is a schematic diagram of a front structure of an asymmetric packaging belt according to an embodiment of the present invention. [Figure 4] Figure 4 is a schematic diagram of a back structure of an asymmetric packaging belt according to an embodiment of the present invention. [Figure 5] Figure 5 is a schematic diagram of double-sided projection of the asymmetric packaging belt according to an embodiment of the present invention viewed from the front side. [Figure 6] Figure 6 is a cross-sectional view of an asymmetric packaging belt according to an embodiment of the present invention. [Figure 7] Figure 7 is a diagram of SolidWorks simulation parameters in an asymmetric packaging belt according to an embodiment of the present invention. [Figure 8] Figure 8 is a result diagram of SolidWorks stress values in an asymmetric packaging belt according to an embodiment of the present invention. [Figure 9] Figure 9 is a result diagram of SolidWorks displacement amounts in an asymmetric packaging belt according to an embodiment of the present invention. [Figure 10] Figure 10 is a result diagram of SolidWorks stress values in an asymmetric packaging belt according to an embodiment of the present invention. [Figure 11]Figure 11 shows the SolidWorks displacement result in an existing diamond grid packaging belt. In Figure 11, 001 is the upper embossing roll, 002 is the lower embossing roll, and 003 is the framework. [Modes for carrying out the invention]

[0020] The asymmetrical packaging belt disclosed in this invention breaks with tradition by providing an original set of twill lines on the front and back of the packaging belt, consisting of deep and shallow twill lines that slope in different directions. This improves the tensile strength of the packaging belt under the same gram-weight conditions, thus solving problems that existed in existing technologies.

[0021] The technical means in the embodiments of the present invention will be described in more detail below with reference to the drawings in the embodiments of the present invention, but it is clear that the embodiments described above are only a part of the present invention, not all embodiments. All other embodiments that can be obtained by an ordinary person of the art without creative work based on the embodiments in the present invention are all within the scope of protection of the present invention. As shown in Figures 1 to 11, the asymmetrical packing belt of the present invention has a front and a back, and further includes a twill set 1, the twill set 1 includes a deep twill 11 tilted to one side and a shallow twill 12 tilted to the other side, If we define h as the height of the twill protruding from the surface of the packing belt, then the height of the deep twill 11 is h1, the height of the shallow twill 12 is h2, and h1 > h2. The italicized set 1 is installed on both the front and rear surfaces.

[0022] Before describing embodiments of the present invention, let us first describe the manufacturing process of flat packing belts. Currently, flat packing belts are manufactured by press processing using two embossing rolls positioned facing each other, one above the other. As shown in Figures 1 and 2, recessed patterns are provided on the embossing rolls, and these are used to press the twill pattern onto the belt. Comparing the flat packing belt with a twill pattern set of the present invention with a flat packing belt with a diamond grid pattern, if the thickness dimensions of the two types of flat packing belt bodies, the angle of inclination of the twill pattern, and the spacing of the twill pattern are all set to be the same when manufacturing the flat packing belts, then, because the patterns of the two types of flat packing belts are different and the height of the twill pattern is different, under the condition that the weight of the material before the twill press processing of the flat packing belts is the same, the sum of the heights of the two types of twill patterns on the twill pattern set flat packing belt is equal to the sum of the heights of the convex ribs inclined in both directions on the diamond grid pattern.

[0023] An embodiment of the present invention breaks with conventional thinking in the industry, specifically, in a flat packing belt using a rhombic grid pattern with four sides of equal height, an innovative twill set 1 consisting of deep twill 11 and shallow twill 12 is used, resulting in superior performance under the condition that the material weight is the same. The improvements in the properties of the asymmetrical packing belt of the present invention will be described below in three aspects.

[0024] 1. Explanation of Principle: When only the height of the twill is changed without altering the structure of the packaging belt, the higher the twill height, the better the tensile strength of the packaging belt, provided that force applied to both ends of the packaging belt does not exceed the design range. However, this increases the amount of raw materials used. If the structure of the packaging belt is changed to include a type of twill on the front or back, the frictional performance of the packaging belt will be significantly reduced. However, the present invention balances tensile strength and frictional performance, meeting the requirements for frictional performance while simultaneously maximizing tensile strength. As shown in Figures 3 to 6, the asymmetrical packaging belt of the present invention is a packaging belt using a set of twill, forming a grid with deep twill 11 and shallow twill 12, which can be in the shape of a rhombus or parallelogram, ensuring sufficient frictional performance of the packaging belt. The shallow twill 12 is lower than the height of the twill in a typical rhombus grid. The material saved by the lower height of the shallow twill 12 is used to increase the height of the deep twill 11. Increasing the height of the deep twill 11 results in a significant improvement in tensile strength. Roughly speaking, under conditions where friction performance meets requirements, the tensile strength of a packaging belt can be increased by 5% to 20%. What I want to explain here is that improving the performance of a packaging belt under the same gram-weight conditions is quite difficult, and especially now, with environmentally friendly principles becoming increasingly ingrained in people's minds, even a slight improvement in the performance of a packaging belt under equivalent gram-weight conditions is of paramount importance.

[0025] 2. Simulation Analysis: Here, SolidWorks software is used to perform a simulation analysis of the performance of the flat packing belt. As shown in Figures 7 to 10, the drawings show the asymmetric packing belt of the present invention and the conventional diamond grid packing belt. When the body thickness of both belts is set to 0.2 mm, the angle of the twill inclination, and the spacing of the twill are set to the same values, the patterns of the two types of packing belts are different, and the height of the twill is different. Therefore, under the condition that the weight of the material before twill pressing is the same for both flat packing belts, when h1 = 0.2 mm and h2 = 0.02 mm are set for the asymmetric packing belt of the present invention, the height of the diamond grid mp h3 *2 = 0.2 + 0.02, that is, h₃ = 0.11 mm. When performing simulation analysis on the performance of a packaging strap through SolidWorks, as shown in Figure 7, the material properties of the packaging strap are first set. Subsequently, a 20 mm long asymmetric packaging strap is cut out, both ends are clamped by 1 mm each, one end is fixed, and a 50 N force is applied to the other end, resulting in a stress value of 4.137e+007 and a deformation amount of 2.116e-001. Thereafter, a 20 mm long diamond lattice packaging strap is cut out, both ends are clamped by 1 mm each, one end is fixed, and a 50 N force is applied to the other end, resulting in a stress value of 5.196e+007 and a deformation amount of 2.155e-001. That is, under the condition of being subjected to the same force, the stress value of the asymmetric packaging strap is smaller, and the deformation amount is also smaller. Under the situation where all conditions are the same, by only changing the height of the twill weave, the stress value and deformation amount generated on the packaging strap change, and the performance of the asymmetric packaging strap is significantly superior compared to the diamond lattice packaging strap.

[0026] 3. Analysis of actual experimental data: In the present invention, four frequently used packaging straps are selected for testing, and their sizes are 11 * 0.4 and 2 g / m, 11 * 0.45 and 2.2 g / m, 11 * 0.5 and 2.5 g / m, 13.5 * 0.6 and 4.5 g / m.

[0027] 3. Analysis of actual experimental data: In the present invention, four frequently used packaging straps are selected for testing, and their sizes are 11 * 0.4 and 2 g / m, 11 * 0.45 and 2.2 g / m, 11 * 0.5 and 2.5 g / m, 13.5 * 0.6 and 4.5 g / m.

[0028] Size 11 * 0.4 and 2 g / m test: First, four straps with a size of 11 *A diamond-patterned packing belt with a density of 0.4 (2 g / m) will be selected for testing. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 10.02g, and the average value is 2.004g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 10.09g, and the average value is 2.018g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 10.04g, and the average value is 2.008g / m. 4. Cut a 5m section of number 4 and weigh it. The weight is 10.1g, and the average weight is 2.02g. This yields the following data. [Table 1]

[0029] Continuing with four size 11 * We will select an asymmetrical packaging belt with a density of 0.4 (2 g / m) and h2 = 0.02 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 10.19g, and the average value is 2.038g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 9.95g, and the average value is 1.99g / m. 3. Cut a 5m section of section number 3 and weigh it. The weight is 9.84g, and the average value is 1.968g / m. 4. Cut a 5m section of section number 4 and weigh it. The weight is 9.64g, and the average value is 1.928g / m. This yields the following data. [Table 2]

[0030] After that, four size 11 *We will select an asymmetrical packaging belt with a density of 0.4 (2 g / m) and an h2 of 0.04 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 10g, and the average value is 2g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 10g, and the average value is 2g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 10.2g, and the average value is 2.04g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 10.35g, and the average value is 2.07g / m. This yields the following data. [Table 3]

[0031] Finally, comparing the experimental data, the asymmetric packaging belt of the present invention showed an improvement in tensile strength of approximately 6.8% to 13.2% compared to the conventional diamond grid packaging belt. The performance of the asymmetric packaging belt also changed with the change in h2, but in all cases it was superior to the tensile strength of the conventional diamond grid packaging belt.

[0032] Size 11 * Tests of 0.45 and 2.2 g / m: First, the four sizes are 11 * A diamond-patterned packing belt with a density of 0.45 (2.2 g / m) will be selected for testing. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 11g, and the average value is 2.2g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 11.01g, and the average value is 2.202g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 11.09g, and the average value is 2.218g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 10.95g, and the average value is 2.19g / m. This yields the following data. [Table 4]

[0033] After that, four size 11 * We will select an asymmetrical packaging belt with a weight of 0.45 (2.2 g / m) and h2 = 0.04 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 11.45g, and the average value is 2.29g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 11g, and the average value is 2.2g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 11.4g, and the average value is 2.28g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 11.75g, and the average value is 2.35g / m. This yields the following data. [Table 5]

[0034] Continuing with four size 11 * We will select an asymmetrical packaging belt with a density of 0.45 (2.2 g / m) and h2 = 0.15 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 10.62g, and the average value is 2.124g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 10.76g, and the average value is 2.152g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 10.8g, and the average value is 2.16g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 10.7g, and the average value is 2.14g / m. This yields the following data. [Table 6]

[0035] Finally, comparing the experimental data, the asymmetric packaging belt of the present invention showed an improvement in tensile strength of approximately 5% to 16.1% compared to the conventional diamond grid packaging belt. The performance of the asymmetric packaging belt also changed with the change in h2, but in all cases it was superior to the tensile strength of the conventional diamond grid packaging belt.

[0036] Size 11 * Tests of 0.5 and 2.5 g / m: First, the four sizes are 11 * A diamond-patterned packing belt with a density of 0.5 (2.5 g / m) will be selected for testing. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 12.75g, and the average value is 2.55g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 12.5g, and the average value is 2.5g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 12.55g, and the average value is 2.518g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 12.65g, and the average value is 2.53g / m. This yields the following data. [Table 7]

[0037] Continuing with four size 11 * We will select an asymmetrical packaging belt with a density of 0.5 (2.5 g / m) and h2 = 0.02 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 12.33g, and the average value is 2.466g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 12.43g, and the average value is 2.486g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 13.2g, and the average value is 2.64g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 12.99g, and the average value is 2.598g / m. This yields the following data. [Table 8]

[0038] After that, four size 11 * We will select an asymmetrical packaging belt with a density of 0.5 (2.5 g / m) and an h2 of 0.04 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 12.65g, and the average value is 2.53g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 12.58g, and the average value is 2.516g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 12.9g, and the average value is 2.58g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 12.8g, and the average value is 2.56g / m. This yields the following data. [Table 9]

[0039] Continuing with four size 11 * We will select an asymmetrical packaging belt with a density of 0.5 (2.5 g / m) and h2 = 0.15 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 12.78g, and the average value is 2.556g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 12.87g, and the average value is 2.574g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 12.99g, and the average value is 2.598g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 12.3g, and the average value is 2.46g / m. This yields the following data. [Table 10]

[0040] Finally, comparing the experimental data, the asymmetric packaging belt of the present invention shows an improvement in tensile strength of approximately 6.5% to 20% compared to conventional diamond grid packaging belts. Of these, the performance improvement of the asymmetric packaging belt with h2 = 0.04 mm was particularly remarkable, improving by approximately 18%. The performance of the asymmetric packaging belt also changed with changes in h2, but in all cases it was superior to the tensile strength of the conventional diamond grid packaging belt.

[0041] Size 13.5 * Tests of 0.6 and 4.5 g / m: First, the size of the four pieces is 13.5 * A diamond-patterned packing belt with a density of 0.6 (4.5 g / m) will be selected for testing. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 22.55g, and the average value is 4.51g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 22.5g, and the average value is 4.5g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 22.4g, and the average value is 4.48g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 23g, and the average value is 4.6g / m. This yields the following data. [Table 11]

[0042] Next, four size 13.5 * We will select an asymmetrical packaging belt with a density of 0.6 (4.5 g / m) and an h2 of 0.04 mm and conduct the test. In other words, number 1, number 2, number 3 and number 4: 1. Cut a 5m section of section 1 and weigh it. The weight is 22.93g, and the average value is 4.586g / m. 2. Cut a 5m section of section 2 and weigh it. The weight is 23.19g, and the average value is 4.638g / m. 3. Cut a 5m section of section 3 and weigh it. The weight is 22.86g, and the average value is 4.572g / m. 4. Cut a 5m section of section 4 and weigh it. The weight is 23.3g, and the average value is 4.66g / m. This yields the following data. [Table 12]

[0043] Finally, comparing the experimental data, the asymmetric packaging belt of the present invention showed an improvement in tensile strength of approximately 8% to 11.3% compared to the conventional diamond grid packaging belt. The performance of the asymmetric packaging belt also changed with the change in h2, but in all cases it was superior to the tensile strength of the conventional diamond grid packaging belt.

[0044] Through the analysis of the above experimental data, it has been found that the asymmetrical packaging belt of the present invention has significantly improved tensile strength compared to conventional diamond grid packaging belts, with some sizes showing an improvement of as much as 20%. Moreover, this was achieved without changing the gram weight of the material, which has significant meaning and practical value.

[0045] Preferably, adjacent deep italics 11 are parallel to each other.

[0046] It should be explained that adjacent deep italics 11 do not necessarily have to be parallel to each other. However, in practical applications, adjacent deep italics 11 are often parallel to each other, which is for ease of manufacturing.

[0047] Preferably, the spacing between adjacent deep italics 11 is the same.

[0048] Preferably, 0.1 mm ≤ h1 ≤ 0.7 mm.

[0049] The range of h1 mentioned above represents a relatively good data range obtained through testing, and the data range is not limited here.

[0050] Preferably, adjacent shallow italics 12 are parallel to each other.

[0051] It should be explained that adjacent shallow italics 12 do not necessarily have to be parallel to each other. However, in practical applications, adjacent shallow italics 12 are often parallel to each other, which is for ease of manufacturing.

[0052] Preferably, the spacing between adjacent shallow italics 12 is the same.

[0053] Preferably, the above-mentioned 0.005 ≤ h2 ≤ 2 / 3h1mm.

[0054] The above range for h2 represents a relatively good data range obtained through testing, and the data range is not limited here.

[0055] Preferably, the angle of inclination in the vertical direction is the same for the deep twill 11 and the shallow twill 12.

[0056] Under these circumstances, the deep italicized lines 11 and the shallow italicized lines 12 form a parallelogram.

[0057] Preferably, adjacent deep twill lines 11 are parallel to each other and spaced equally apart. Adjacent shallow twill lines 12 are parallel to each other and spaced equally apart. Viewed from a front projection, the angle formed by the deep twill lines 11 located on the front and the deep twill lines 11 located on the back is the same as the angle formed by the shallow twill lines 12 located on the front and the shallow twill lines 12 located on the back.

[0058] Preferably, adjacent deep twill lines 11 are parallel to each other and spaced equally apart. Adjacent shallow twill lines 12 are parallel to each other and spaced equally apart. On the same plane, the deep twill lines 11 and the shallow twill lines 12 form a rhombic grid.

[0059] The asymmetrical packaging belt provided by the present invention has a front and a back, and further includes a set of twill lines 1, the set of twill lines 1 includes a deep twill line 11 tilted to one side and a shallow twill line 12 tilted to the other side, and if the height of the twill lines protruding from the surface of the packaging belt is defined as h, then the height of the deep twill line 11 is h1, the height of the shallow twill line 12 is h2, and h1 > h2. The set of twill lines 1 is installed on both the front and the back. Breaking with tradition, the present invention discloses an asymmetrical packaging belt in which a set of twill lines 1 consisting of a deep twill line 11 and a shallow twill line 12 tilted in different directions is designed and installed on the front and back of the packaging belt. Such a design can improve the tensile strength of the packaging belt under the same gram weight conditions and solve problems that exist in the prior art.

[0060] While the asymmetrical packaging belt, modular framework, and upright packaging machine provided by the present invention have been described in detail above, a person of ordinary skill in the art can improve and modify specific embodiments and applications based on the ideas of the embodiments of the present invention. For the time being, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A packaging belt, It has a front and a back, The front and back of the packing belt each include an italicized set. The aforementioned italicized set is, The packaging belt has a deep twill pattern having multiple convex ribs that are inclined to one side with respect to the longitudinal direction of the packaging belt and are arranged parallel to each other at predetermined intervals, and A shallow twill that is tilted to the opposite side of the deep twill, has a height h2 protruding from the surface of the packaging belt that is lower than the height h1 protruding from the surface of the packaging belt of the deep twill, and has a plurality of convex ribs arranged in parallel at predetermined intervals. Includes, When the packing belt is viewed so as to project the twill set on both sides from the front, The deep slanted lines of the front slanted set and the deep slanted lines of the back slanted set are inclined in different directions with respect to the length direction of the packing belt. The deep twill of the front twill set and the shallow twill of the back twill set are tilted in the same direction with respect to the length of the packing belt, and are also offset in position. The shallow twill of the front twill set and the deep twill of the back twill set are tilted in the same direction with respect to the length of the packing belt, and are also offset in position. Asymmetrical packaging belt.

2. The asymmetrical packaging belt according to claim 1, characterized in that adjacent deep twill lines are parallel to each other.

3. The asymmetrical packaging belt according to claim 2, characterized in that the spacing between adjacent deep italics is the same.

4. The asymmetrical packaging belt according to claim 3, characterized in that h1 is 0.1 mm ≤ h1 ≤ 0.7 mm.

5. The asymmetrical packaging belt according to any one of claims 1 to 4, characterized in that adjacent shallow twill lines are parallel to each other.

6. The asymmetrical packaging belt according to claim 5, characterized in that the spacing between adjacent shallow italics is the same.

7. The asymmetrical packaging belt according to claim 6, characterized in that the aforementioned h2 is 0.005 mm ≤ h2 ≤ 2 / 3h1 mm.

8. The asymmetrical packaging belt according to claim 6, characterized in that the angles of inclination in the deep twill and shallow twill and the vertical direction are the same.

9. The adjacent deep italics are parallel to each other and have the same spacing between them. The adjacent shallow italics are parallel to each other and have the same spacing. The asymmetrical packaging belt according to claim 1, characterized in that, when viewed from a front projection, the angle formed by the deep twill located on the front and the deep twill located on the back is the same as the angle formed by the shallow twill located on the front and the shallow twill located on the back.

10. The adjacent deep italics are parallel to each other and have the same spacing. The adjacent shallow italics are parallel to each other and have the same spacing. The asymmetrical packaging belt according to claim 1, characterized in that, on the same surface, the deep twill and the shallow twill form a diamond-shaped grid.

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