A method for preparing the base fabric of logging protective clothing and the base fabric of logging protective clothing

Abstract

This invention discloses a method for preparing the base fabric of logging protective clothing and the base fabric itself. The method includes feeding each group of warp yarns at a fixed interval, consisting of two parallel and adjacent warp yarns; simultaneously rotating and twisting each group of warp yarns; feeding weft yarns in a direction perpendicular to the warp yarns, allowing the weft yarns to pass through the rotational twisting to form binding points; after binding and fixing, the two warp yarns of each group symmetrically separate to the left and right sides; after the two bound warp yarns of each group separate to the left and right, they intersect with one of the warp yarns from the adjacent group, forming new groups of warp yarns. In this invention, the binding points formed by the rotational twisting of the warp yarns create a metastable state between the weft yarns and the binding points, rather than being fixed in place. When encountering a chainsaw, the weft yarns are quickly hooked out, entangled in the chainsaw, stopping the high-speed chainsaw and preventing cutting injuries.

Description

Technical Field

[0001] This invention relates to the field of safety protection base fabric technology, specifically to a logging protective clothing base fabric and its preparation method. Background Technology

[0002] With the rapid development of industries such as construction, forestry, horticulture, home repair, and emergency rescue, chainsaws have been widely used as efficient cutting tools. Logging protective clothing is a type of protective garment specifically designed for chainsaw operation, aiming to provide immediate and effective protection in the event of accidental chainsaw contact through its unique design and functionality.

[0003] Patent application number CN200510022644.1 discloses a lining for logging protective clothing that protects the body of loggers during labor. This lining is manufactured using the following method: a) Material selection: Polyester elastic yarn with a diameter of 900-1500D is selected as the warp yarn, polypropylene yarn with a diameter of 900-4500D as the weft yarn, and binding yarn are prepared for use; b) Warp yarn pre-setting: The warp yarn is placed in an environment of 90-130℃ and 2.5-4.5kg pressure for high-temperature setting. After setting, the warp yarn is cooled and wound onto a yarn bobbin for use; c) Warping: The warp yarn and binding yarn on the yarn bobbin are warped into sections onto warp heads; d) Warp knitting: The yarns on each warp head are sent to a full-width warp and weft knitting machine to be woven into the finished product using a loose warp knitting structure. The lining of this logging protective suit uses a variety of yarns, has a complex structure, and is not very stable. It also requires high-temperature and high-pressure preparation conditions, which leads to high production costs.

[0004] Therefore, there is an urgent need to design better logging protective clothing and related products. Summary of the Invention

[0005] To address the aforementioned problems in the existing technology, this paper aims to provide a base fabric for logging protective clothing and its preparation method.

[0006] The specific technical solution is as follows:

[0007] A method for preparing the base fabric of logging protective clothing includes the following steps:

[0008] Step 1: Take two parallel and adjacent warp yarns as a group, and feed each group of warp yarns at a fixed interval on the same horizontal axis;

[0009] Step 2: Each group of warp yarns fed in parallel and adjacent to each other is simultaneously rotated and twisted;

[0010] Step 3: Feed the weft yarn in a direction perpendicular to the warp yarn fed in Step 1, so that the weft yarn passes between the two yarns of each group of warp yarns after rotation and twisting. Repeat Step 2 to rotate and twist each group of warp yarns again to form a binding point, binding the warp yarn and the weft yarn fed on the horizontal axis together. The weft yarn can move relative to the binding point, and when subjected to external force, the weft yarn can be pulled out from the binding point.

[0011] Step 4: After binding and fixing, the two warp yarns of each group of warp yarns are symmetrically separated to the left and right sides, forming an angle of 10°-179°;

[0012] Step 5: After the two warp yarns in each group are separated to the left and right, they will intersect with one of the warp yarns in the adjacent group, forming a new group of warp yarns.

[0013] Step 6: Repeat steps 2, 3, 4 and 5.

[0014] Preferably, the distance between any two adjacent binding points formed in step 3 on the same horizontal axis parallel to the weft yarn is 0.5mm to 30mm.

[0015] Preferably, the number of rotations and twists in step 2 can be from 1 to 30.

[0016] Preferably, the number of rotations and twists in step 3 can be from 1 to 30.

[0017] A logging protective clothing base fabric includes: warp yarns and weft yarns, wherein the warp yarns and the weft yarns are woven into a mesh structure, wherein two adjacent warp yarns are first rotated and twisted, and the weft yarn is inserted between the two warp yarns in a direction perpendicular to the feeding direction of the warp yarns, and the two adjacent warp yarns are rotated and twisted again to form binding points.

[0018] As a further preferred option, the warp yarn and the weft yarn are made of UHMWPE, aramid, polypropylene, polyester, nylon, metal fiber or PBO fiber.

[0019] As a further preferred embodiment, the warp yarn has a yarn count diameter of 50D-2000D.

[0020] As a further preferred option, the diameter of the weft yarn is 100D-3000D.

[0021] The positive effects of the above technical solution are:

[0022] The logging protective clothing base fabric provided in this invention application has a mesh structure. Each unit of the mesh structure is fixed by three binding points. The binding points are formed by the twisting of the warp yarns. The weft yarns pass through the binding points and are clamped by the binding points. The weft yarns and binding points form a metastable state, that is, the binding points are not fixed interlacing points. When subjected to external force, the weft yarns can be displaced relative to the binding points. In this way, when the logging protective clothing base fabric encounters a chainsaw, the weft yarns will be quickly hooked out and entangled in the chainsaw, effectively stopping the high-speed chainsaw immediately and preventing cutting injuries.

[0023] Furthermore, the logging protective clothing base fabric provided by this invention has a simple structure, containing only warp and weft yarns. It eliminates the need for separate binding yarns; the warp yarns alone bind and secure the weft and warp yarns, significantly improving production efficiency. Secondly, the warp and weft yarns in the logging protective clothing base fabric provided by this invention differ from those in traditional structures such as woven fabrics. The warp yarns in this invention are not simply arranged in parallel but can perform complex movements, and the weft yarns are bound and secured without the need for weft-pressing. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the base fabric for logging protective clothing provided by the present invention;

[0025] Figure 2 A schematic diagram of the weaving structure of the base fabric for the first type of logging protective clothing provided by the present invention;

[0026] Figure 3 This is a schematic diagram of the weaving structure of the base fabric for the second type of logging protective clothing provided by the present invention.

[0027] In the attached diagram: 1. Warp yarn; 2. Weft yarn; 3. Binding point; 4. First warp yarn; 5. Second warp yarn; 6. Third warp yarn; 7. Fourth warp yarn; 8. Fifth warp yarn; 9. Sixth warp yarn. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0029] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] Please see Figures 1 to 3 This invention discloses a base fabric for logging protective clothing, comprising: warp yarns 1 and weft yarns 2, wherein the warp yarns 1 and the weft yarns 2 are woven into a mesh structure, wherein two adjacent warp yarns 1 are first rotated and twisted, and the weft yarns 2 are inserted between the two warp yarns 1 in a direction perpendicular to the feeding direction of the warp yarns 1, and the two adjacent warp yarns 1 are rotated and twisted again to form binding points.

[0032] Optionally, the warp yarn 1 and the weft yarn 2 are made of UHMWPE, aramid, polypropylene, polyester, nylon, metal fiber or PBO fiber.

[0033] Ultra-high molecular weight polyethylene (UHMWPE) is a type of linear polyethylene with an unbranched chain and a molecular weight of over 1.5 million.

[0034] Among them, PBO fiber[1] is the abbreviation of poly-p-phenylenebenzobisoxazole fiber. It is a composite material reinforcement material developed by the United States in the 1980s for the development of aerospace. It is the most promising member of the polyamide family containing heterocyclic aromatics and is known as the super fiber of the 21st century.

[0035] Optionally, the warp yarn 1 has a yarn count diameter of 50D-2000D.

[0036] Optionally, the diameter of the weft yarn 2 is 100D-3000D.

[0037] This invention discloses a method for preparing the base fabric of the aforementioned logging protective clothing, which includes the following steps:

[0038] Step 1: Take two parallel and adjacent warp yarns 1 as a group, and feed each group of warp yarns 1 at a fixed interval on the same horizontal axis;

[0039] For example, the first warp yarn 4 and the second warp yarn 5 are fed in parallel and adjacent to each other, fed at a fixed interval on the same horizontal axis, and the third warp yarn 6 and the fourth warp yarn 7, the fifth warp yarn 8 and the sixth warp yarn 9, etc. are fed in parallel and adjacent to each other on the right side of the first warp yarn 4 and the second warp yarn 5, respectively.

[0040] Step 2: Each group of warp yarns 1, fed in parallel and adjacent to each other, is simultaneously rotated and twisted;

[0041] For example, the first warp yarn 4, the second warp yarn 5, the third warp yarn 6, the fourth warp yarn 7, the fifth warp yarn 8, and the sixth warp yarn 9 are twisted clockwise simultaneously, either once or three times. When the number of twisting is odd, the two warp yarns 1 in each group exchange positions after twisting.

[0042] Step 3: Feed the weft yarn 2 in a direction perpendicular to the warp yarn 1 fed in Step 1, so that the weft yarn 2 passes between the two warp yarns 1 of each group of warp yarns 1 after rotation and twisting. Repeat Step 2 to rotate and twist each group of warp yarns 1 again to form a binding point 3, binding the warp yarn 1 and the weft yarn 2 fed in by the horizontal axis together. The weft yarn 2 can move relative to the binding point 3. When subjected to external force, the weft yarn 2 can be pulled out from the binding point 3.

[0043] Step 4: After binding and fixing, the two warp yarns 1 of each group of warp yarns 1 are symmetrically separated to the left and right sides, forming an angle of 10°-179°;

[0044] Step 5: After the two warp yarns 1 in each group are separated to the left and right, they will intersect with one of the warp yarns 1 in the adjacent group, forming a new group of warp yarns 1; for example: the first warp yarn 4 and the fourth warp yarn 7 intersect, the third warp yarn 6 and the sixth warp yarn 9 intersect, and so on;

[0045] Step 6: Repeat steps 2, 3, 4 and 5.

[0046] Optionally, the distance between any two adjacent binding points 3 formed in step 3 on the same horizontal axis parallel to the weft yarn 2 is 0.5mm to 30mm.

[0047] Optionally, the number of rotations and twists in step 2 can be from 1 to 30 times, or even more.

[0048] Optionally, the number of rotations and twists in step 3 can be from 1 to 30 times, or even more.

[0049] Please see Figure 1 and Figure 2 In the first embodiment, the warp yarn 1 is selected as 800D UHMWPE filament yarn, and the weft yarn 2 is selected as 1600D UHMWPE untwisted roving.

[0050] The method for preparing the base fabric for logging protective clothing includes the following steps:

[0051] Step 1: Take two parallel and adjacent warp yarns as a group, and feed each group of warp yarns at a fixed interval on the same horizontal axis; for example, feed the first warp yarn 4 and the second warp yarn 5 in parallel and adjacent to each other, and feed them at a fixed interval on the same horizontal axis. On the right side of the first warp yarn 4 and the second warp yarn 5, feed the third warp yarn 6 and the fourth warp yarn 7, the fifth warp yarn 8 and the sixth warp yarn 9 in parallel and adjacent to each other, respectively;

[0052] Step 2: Each group of warp yarns fed in parallel and adjacent to each other (such as the first warp yarn 4, the second warp yarn 5, the third warp yarn 6, the fourth warp yarn 7, the fifth warp yarn 8, and the sixth warp yarn 9) is simultaneously twisted clockwise twice. When the number of twisting is even, the left and right positions of the two warp yarns in each group remain unchanged after twisting.

[0053] Step 3: Perpendicular to the warp yarn 1 fed in Step 1, feed the weft yarn 2, so that the weft yarn 2 passes between the two warp yarns of each group of warp yarns after rotation and twisting. Repeat Step 2 to rotate and twist each group of warp yarns 1 clockwise twice again to form a binding point 3, binding the warp yarn 1 and the weft yarn 2 fed in by the horizontal axis together, and the weft yarn 2 can move relative to the binding point 3. When subjected to external force, the weft yarn 2 can be pulled out from the binding point 3.

[0054] Step 4: After binding and fixing, the two warp yarns of each group of warp yarns are symmetrically separated to the left and right sides, forming an angle of 160°;

[0055] Step 5: After the two warp yarns 1 in each group of warp yarns 1 separate to the left and right, they will intersect with one of the warp yarns 1 in the adjacent group, forming a new warp yarn 1 in each group. For example: the second warp yarn 5 and the third warp yarn 6 intersect, the fourth warp yarn 7 and the fifth warp yarn 8 intersect, and so on;

[0056] Step 6: Repeat steps 2, 3, 4 and 5.

[0057] Furthermore, the distance between any two adjacent binding points 3 formed in step 3 on the same horizontal axis parallel to the weft yarn 2 is 15mm.

[0058] The method in this embodiment breaks through the limitation of the original technology that uses a large amount of polyester as the base fabric of logging protective clothing. It innovatively uses UHMWPE as the raw material of logging protective clothing. Since the density of UHMWPE is usually between 0.91 and 0.96 g / cm³, which is much lower than that of polyester, the weight of logging protective clothing is greatly reduced. In addition, the logging protective clothing base fabric structure provided by this embodiment is simple, containing only warp yarn 1 and weft yarn 2. There is no need to use separate binding yarn. Only the warp yarn 1 is needed to bind and fix the weft yarn 2 and the warp yarn 1, which greatly improves production efficiency.

[0059] Furthermore, the logging protective clothing base fabric provided in this embodiment uses high-strength and loosely packed UHMWPE untwisted roving for the weft yarn 2. When encountering a chainsaw, it is quickly hooked out and entangled, effectively stopping the high-speed chainsaw immediately and preventing cutting injuries. This logging protective clothing base fabric provided in this embodiment only requires 6 layers to meet the standard EN11393-5: Class 1. The shape of the logging protective clothing base fabric in this embodiment can be found in [reference needed]. Figure 1 As shown, its shape is not a triangle, but has three vertices, all of which are binding points. The three vertices are formed by the warp yarn 1 and the weft yarn 2 binding and fixing each other.

[0060] refer to Figure 1 and Figure 3 In the second embodiment, the warp yarn 1 is made of 400D UHMWPE untwisted roving, and the weft yarn 2 is made of 1000D high-strength, aging-resistant polypropylene untwisted roving. Both the warp yarn 1 and the weft yarn 2 use loose untwisted roving, which makes it easier for them to come into contact with the saw teeth and hook onto them, thus hindering their operation.

[0061] To achieve the aforementioned logging protective clothing base fabric, this embodiment provides a method for preparing the logging protective clothing base fabric, comprising the following steps:

[0062] Step 1: Take two parallel and adjacent warp yarns 1 as a group, and feed each group of warp yarns 1 at a fixed interval on the same horizontal axis; for example, feed the first warp yarn 4 and the second warp yarn 5 in parallel and adjacent to each other, and feed them at a fixed interval on the same horizontal axis. On the right side of the first warp yarn 4 and the second warp yarn 5, feed the third warp yarn 6 and the fourth warp yarn 7, the fifth warp yarn 8 and the sixth warp yarn 9 in parallel and adjacent to each other, respectively;

[0063] Step 2: Each set of warp yarns 1 fed in parallel and adjacent to each other (e.g., the first warp yarn 4, the second warp yarn 5, the third warp yarn 6, the fourth warp yarn 7, the fifth warp yarn 8, and the sixth warp yarn 9) is simultaneously twisted clockwise 3 times. When the number of twisting times is odd, the two warp yarns 1 in each set are swapped left and right after twisting.

[0064] Step 3: Feed the weft yarn 2 in a direction perpendicular to the warp yarn 1 fed in Step 1, so that the weft yarn 2 passes between the two warp yarns 1 of each group of warp yarns 1 after rotation and twisting. Repeat Step 2 to rotate and twist each group of warp yarns 1 clockwise 3 times to form a binding point 3, binding the warp yarn 1 and the weft yarn 2 fed in on the horizontal axis together, and the weft yarn 2 can move relative to the binding point 3. When subjected to external force, the weft yarn 2 can be pulled out from the binding point 3.

[0065] Step 4: After binding and fixing, the two warp yarns 1 of each group of warp yarns 1 are symmetrically separated to the left and right sides, forming an angle of 80°;

[0066] Step 5: After the two warp yarns 1 of each group of warp yarns 1 separate to the left and right, they will intersect with one of the warp yarns 1 of the adjacent group of warp yarns 1, forming a new group of warp yarns 1; for example: the first warp yarn 4 and the fourth warp yarn 7 intersect, the third warp yarn 6 and the sixth warp yarn 9 intersect, and so on;

[0067] Step 6: Repeat steps 2, 3, 4 and 5.

[0068] Furthermore, the distance between any two adjacent binding points 3 formed in step 3 on the same horizontal axis parallel to the weft yarn 2 is 4mm.

[0069] In this embodiment, both the warp yarn 1 and the weft yarn 2 use loose, untwisted rovings, which make it easier for them to come into contact with the saw teeth and hook onto them, thus hindering their operation.

[0070] Furthermore, the logging protective clothing base fabric provided in this embodiment has a simple structure, containing only warp yarns 1 and weft yarns 2. It eliminates the need for separate binding yarns; the warp yarns 1 alone bind and secure the weft yarns 2 and warp yarns 1, significantly improving production efficiency. This embodiment of logging protective clothing base fabric requires only 10 layers to meet standard EN 11393-5: Class 1.

[0071] refer to Figure 1 and Figure 3 In the third embodiment, the warp yarn 1 is made of 1600D stainless steel wire, and the weft yarn 2 is made of 3000D stainless steel wire.

[0072] To achieve the aforementioned logging protective clothing base fabric, the preparation method of the logging protective clothing base fabric includes the following steps:

[0073] Step 1: Two parallel and adjacent warp yarns 1 are grouped together and fed into each group of warp yarns 1 at a fixed interval on the same horizontal axis; for example, the first warp yarn 4 and the second warp yarn 5 are fed into the same horizontal axis at a fixed interval, and the third warp yarn 6 and the fourth warp yarn 7, the fifth warp yarn 8 and the sixth warp yarn 9, etc., are fed into the same horizontal axis at a fixed interval on the right side of the first warp yarn 4 and the second warp yarn 5, respectively.

[0074] In step 2, each set of warp yarns 1 fed in parallel and adjacent to each other (e.g., the first warp yarn 4, the second warp yarn 5, the third warp yarn 6, the fourth warp yarn 7, the fifth warp yarn 8, and the sixth warp yarn 9) is simultaneously twisted clockwise once. Since the stainless steel wire has a small torque and is not easy to re-twist after twisting, only one twist is required.

[0075] Step 3 is perpendicular to the warp yarn 1 fed in step 1. Weft yarn 2 is fed in so that the weft yarn 2 passes between the two warp yarns 1 of each group of warp yarns 1 after rotation and twisting. Step 2 is repeated so that each group of warp yarns 1 is rotated and twisted clockwise once again to form binding point 3. The warp yarn 1 and the weft yarn 2 fed in by the horizontal axis are bound together, and the weft yarn 2 can move relative to the binding point 3. When subjected to external force, the weft yarn 2 can be pulled out from the binding point 3.

[0076] After being tied and secured in step 4, the two warp yarns 1 of each group of warp yarns 1 are symmetrically separated to the left and right sides, forming an angle of 80°.

[0077] Step 5: After the two warp yarns 1 of each group of warp yarns separate to the left and right, they will intersect with one of the warp yarns 1 in the adjacent group, forming a new group of warp yarns 1. For example: the first warp yarn 4 and the fourth warp yarn 7 intersect, the third warp yarn 6 and the sixth warp yarn 9 intersect, and so on;

[0078] Step 6: Repeat steps 2, 3, 4 and 5.

[0079] Furthermore, the distance between any two adjacent binding points 3 formed in step 3 on the same horizontal axis parallel to the weft yarn 2 is 12mm.

[0080] In this embodiment, both the warp yarn 1 and the weft yarn 2 of the logging protective clothing base fabric are made of stainless steel wire, resulting in a base fabric structure that is stable and strong.

[0081] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0082] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A method for preparing the base fabric of logging protective clothing, characterized in that, Includes the following steps: Step 1: Take two parallel and adjacent warp yarns as a group, and feed each group of warp yarns at a fixed interval on the same horizontal axis; Step 2: Each group of warp yarns fed in parallel and adjacent to each other is simultaneously rotated and twisted; Step 3: Feed the weft yarn in a direction perpendicular to the warp yarn fed in Step 1, so that the weft yarn passes between the two yarns of each group of warp yarns after rotation and twisting. Repeat Step 2 to rotate and twist each group of warp yarns again to form a binding point, binding the warp yarn and the weft yarn fed on the horizontal axis together. The weft yarn can move relative to the binding point, and when subjected to external force, the weft yarn can be pulled out from the binding point. Step 4: After binding and fixing, the two warp yarns of each group of warp yarns are symmetrically separated to the left and right sides, forming an angle of 10°-179°; Step 5: After the two warp yarns in each group are separated to the left and right, they will intersect with one of the warp yarns in the adjacent group, forming a new group of warp yarns. Step 6: Repeat steps 2, 3, 4 and 5.

2. The method for preparing the base fabric of logging protective clothing according to claim 1, characterized in that, The distance between any two adjacent binding points formed in step 3 on the same horizontal axis parallel to the weft yarn is 0.5mm to 30mm.

3. The method for preparing the base fabric of logging protective clothing according to claim 1, characterized in that, The number of rotations and twists in step 2 can be from 1 to 30.

4. The method for preparing the base fabric of logging protective clothing according to claim 1, characterized in that, The number of rotations and twists in step 3 can be from 1 to 30.

5. A logging protective clothing base fabric, manufactured by the logging protective clothing base fabric preparation method according to claim 1, characterized in that, include: The warp yarn and the weft yarn are woven into a mesh structure. The two adjacent warp yarns are first rotated and twisted. The weft yarn is inserted between the two warp yarns in a direction perpendicular to the feeding direction of the warp yarn. The two adjacent warp yarns are rotated and twisted again to form a binding point.

6. The base fabric for logging protective clothing according to claim 5, characterized in that, The warp yarn and the weft yarn are made of UHMWPE, aramid, polypropylene, polyester, nylon, metal fiber or PBO fiber.

7. The logging protective clothing base fabric according to claim 5, characterized in that, The warp yarn has a count diameter of 50D-2000D.

8. The base fabric for logging protective clothing according to claim 5, characterized in that, The diameter of the weft yarn is 100D-3000D.

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