A cylindrical structure and its use

Abstract

The present invention discloses a cylindrical structure and its use. The structure is in a continuous state, comprising an upper portion A, a connecting line (1) and a lower portion B, and the cylindrical structure is twisted in at least two directions, S and Z. The cylindrical structure of the present invention can effectively protect the knees, elbow joints and other parts, has strong practicality, simple production process, and is very suitable for making protective products such as knee pads and sleeves.

Description

Technical Field

[0001] The present invention relates to a cylindrical structure, in particular to a continuous cylindrical structure. Background Art

[0002] With the development of society, exercise and fitness have become indispensable activities in people's daily lives. Injuries are inevitable during these activities, and injuries to the knees and elbows are particularly common. These joints are crucial but relatively fragile. When the knees and elbows are subjected to external forces during walking or exercise, these joints can easily shift, leading to sprains, dislocations, and even fractures. To protect these joints, a wide range of sports protective products are now available on the market.

[0003] For example, patent document CN206729254U discloses a high-protection kneepad, which is composed of an upper and lower fixed structure made of elastic fabric, and protects the knees through a "U"-shaped knitted structure B and a fine-striped knitted structure A. Since the four-layer structure of the kneepad body is fixed together by sewing, the pressure generated by different fabrics is different and uneven (too large or too small), which can easily hinder blood circulation. In addition, the sewing fixation method uses seams at the seams, and the protruding seam edges at the seams easily rub against the skin, which can easily cause skin discomfort after walking or exercising for a long time. In addition, since the overall fabric is not integrated, the thickness of the fabric varies, and the thick or tight areas are not easy to breathe, which can easily cause long-term users to feel stuffy and uncomfortable.

[0004] For example, patent document CN205585361U discloses a sports knee pad, the main body of which is an elastic woven body, the knee part is hollowed out, and elastic tulle is spliced in the hollow part. The elastic tulle is provided with a number of elastic knitted strips to protect the knees from injury during exercise. However, the use of tulle fabric in the knee area solves the breathability problem, but weakens the protective effect on the knees.

[0005] For example, patent document CN105996224B discloses a pressure brace whose knee and leg guards are three-dimensionally knitted and feature multiple seamlessly connected functional blocks that apply support or pressure. The brace is used to prevent and treat lower limb knee pain and chronic venous insufficiency, and relieves thigh muscle tension through systemic pressure management. While specifically designed based on the structure of the leg muscles, it provides excellent support for various leg muscle groups. However, the brace contains metal strips as a support structure, which can cause various new problems for the user when worn, such as difficulty in movement or leg discomfort. This makes it difficult to wear for extended periods of time. Furthermore, the brace is extremely complex, difficult to produce, and expensive to produce. Summary of the Invention

[0006] The object of the present invention is to provide a continuous tubular structure having excellent protective effect, being comfortable and not tight when worn, having good breathability and being wearable for a long time, and a knee pad, sleeve or clothing made thereof.

[0007] The cylindrical structure of the present invention is in a continuous state, comprising an upper portion A, a connecting line (1) and a lower portion B, and twisting in at least two directions, S and Z, exists on the cylindrical structure.

[0008] The tubular structure of the present invention is continuous, eliminating uneven pressure and skin rubbing at seams, providing excellent comfort. The tubular structure exhibits distortion in at least two directions, S and Z, creating a certain amount of pressure at the junction, effectively protecting areas such as knees and elbows. The structure is highly practical and simple to produce, making it ideal for use in protective products such as kneepads and sleeves. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 Schematic diagram of the cylindrical structure of the present invention, wherein 1 is the upper part A, 2 is the lower part B, (1) is the connecting line, (2) is the upper coil row, (3) is the lower coil row, a is the intersection of (2) and (3), (4) is the vertical line of the tangent of the connecting line (1), α is the angle between the coil row (2) and the connecting line (1), and β is the angle between the coil row (3) and the connecting line (1). DETAILED DESCRIPTION

[0010] The tubular structure of the present invention is in a continuous state, including an upper part A, a connecting line (1) and a lower part B, and there are at least two twists in the S and Z directions on the tubular structure. The continuous state here refers to the tubular structure being woven as a whole. There is a resultant force in the opposite direction at each point on the connecting line twisted in the S and Z directions. This is because there is a corresponding stress along the twisted line in each direction, and the two opposite stresses intersect at the same point. Due to the force decomposition effect, the decomposed forces on the vertical connecting line (1) offset each other, while the decomposed forces along the connecting line (1) are superimposed on each other to generate an inward resultant force. When worn and used, if the knee is twisted outward, the resultant force will have a certain offsetting effect. This force has a certain hindering effect on the outward protrusion of bones and muscles during sprain, and can play a protective or relieving role, achieving the effect of relieving sprains.

[0011] The protective effect of the tubular structure of the present invention is related to the yarn fineness, yarn twist, and the angle formed by the twist.

[0012] Preferably, the cylindrical structure of the present invention has a skewed coil wale (2) in the upper portion A and a skewed coil wale (3) in the lower portion B, wherein the intersection of the coil wales (2) and (3) is a, and a is located on the connecting line (1); a vertical line (4) tangent to the connecting line (1) is drawn at the intersection a, and the coil wale (2) and the coil wale (3) are both on the same side of the vertical line (4); and the angle between the coil wale (2) and the connecting line (1) is α, and the angle between the coil wale (3) and the connecting line (1) is β; the angles α and β are both greater than 0° and less than 90°. If the skewed coils are on both sides of the vertical line (4), then the structure will only be skewed in one direction. When there is a skew in one direction, according to the principle of force decomposition, if the forces in the two directions are equal, then the decomposed forces on the connecting line (1) will cancel each other out; if the forces in the two directions are not equal, the forces in the upper and lower parts will be uneven, which will cause the structure to have an unbalanced force, which may cause the structure to have serious problems such as curling. Under the same conditions, the smaller the angle, the stronger the distortion effect and the greater the protective effect. Specifically, the range of angle α is 0 < angle α < 90°, and the range of angle β is 0 < angle β < 90°. Considering the comfort and protective effect during actual wearing, it is more preferred to be 40° < angle α < 80°, and preferably 40° < angle β < 80°.

[0013] The twist of the yarn also plays a significant role in the protective effect of the tubular structure. If the twist of the yarn is too low, while some degree of skewness will occur on the structure, the twist produced by the S and Z twist directions will be almost perpendicular to each other on the connecting line. The resultant force generated by the two twist directions will tend to decrease, and the protective effect will be almost negligible. If the twist of the yarn is too high, the resulting distortion will be relatively severe, and the resultant force on the connecting line will be greater, thus improving the protective effect. However, if the twist is too high, the yarn itself will easily twist and tangle during weaving, which not only affects weaving efficiency but also affects weaving quality. It is also easy to produce defects such as "braids" on the surface of the tubular structure, also known as "pigtails." Therefore, the twist of the yarn forming the structure in the present invention is preferably 600 twists / meter (T / m) or higher, and more preferably 600 to 2500 T / m. Within this range, a continuous structure with high weaving efficiency, significant twist, appropriate force, and excellent appearance can be obtained. More preferably, it is 1000 to 2000 T / m.

[0014] The yarn forming the structure of the present invention can be subjected to a setting or unsetting process after twisting. When the twist is lower than 1000T / m, the yarn can be subjected to an unsetting process; when the yarn twist is between 1000 and 2000T / m, if the yarn is severely twisted, a setting process should be considered; when the yarn twist is higher than 2000T / m, a setting process should be used. Setting is beneficial to the stability of the yarn shape and is more conducive to the smooth progress of weaving production. Among them, the setting process conditions are not particularly limited. Preferably, the setting temperature is 65°C to 90°C and the setting time is 20 minutes to 60 minutes.

[0015] The fibers used in the tubular structure of the present invention may be one or more of polyurethane fibers, polyester fibers, polyamide fibers, natural fibers such as cotton, and regenerated fibers such as viscose. The fibers may be in the form of spun yarn or multifilament yarn. Considering that structures made of fibers containing elastic fibers conform more closely and better to the wearer's skin and are more effective in preventing sprains, composite yarns containing polyurethane fibers or polyester elastic yarns are preferred. The composite yarns may be in the form of machine-bundled or blank-bundled yarns.

[0016] The weave used in the tubular structure of the present invention is not particularly limited, but is preferably a knitted weave. Knitted weaves may include plain, horizontal stripes, vertical stripes, diamond, checkered, or concave-convex weaves, with plain weave being preferred. Compared to other weaves, plain weaves have a smoother surface, more contact areas, and more uniform distortion after knitting, which is more conducive to achieving effective stress.

[0017] The tubular structure of the present invention uses compression comfort to comprehensively evaluate the protective effect and wearing comfort. This is because compression comfort can reflect the wearer's subjective experience during exercise and comprehensively evaluate multiple aspects of the human internal and external environments.

[0018] The method for manufacturing the tubular structure of the present invention is not particularly limited. The machine type may be a cylindrical machine such as a circular knitting machine, a forming machine, a tube knitting machine, or a hosiery machine, and the machine gauge is not particularly limited.

[0019] After obtaining the knitted fabric, it is then subjected to pre-treatment, dyeing, and post-finishing to obtain the tubular structure of the present invention. The pre-treatment, dyeing, and post-finishing conditions are conventional. Pre-treatment varies slightly depending on the fiber type and primarily includes scouring, but may also include bleaching, singeing, shrinking, and mercerizing. Scouring is performed at a temperature of 90-95°C for 10-25 minutes. Post-finishing is primarily chemical finishing, including resin finishing and antistatic finishing.

[0020] In addition, appropriate agents can be added in each process as needed. The scouring agent, hydrophilic agent, etc. used in the present invention can be directly used as commercial products, and the dosage of each agent is preferably 0.1 to 20 g / L.

[0021] The continuous tubular structure of the present invention can be used for knee pads, sleeves or clothes made of the tubular structure.

[0022] The present invention is described in detail below with reference to the embodiments and comparative examples.

[0023] The determination methods of various indicators involved in the present invention are as follows:

[0024] (1) Twist angle (angle α, β)

[0025] A KEYENCE VHX-2000C microscope was used to observe a cylindrical structure containing two twists. The surface (inside) of the structure was placed at the observation point, the microscope magnification was set to 20x, and the shooting brightness was adjusted. First, the connecting line of the cylindrical structure was found and adjusted to the middle area of the observation screen. A photo of the observed fabric was taken. Then, the line drawing function was used to mark the photographed fabric, with straight lines marking the connecting line (1), the skewed coil longitudinal row (2), and the skewed coil longitudinal row (3). Finally, the angle measurement function of the microscope was used to measure the angles α and β.

[0026] (2) Evaluation of wearing comfort

[0027] Ten randomly selected subjects were asked to wear the test article and then run on a treadmill at a speed of 6 m / s. The tubular structure of the present invention was subjectively evaluated for its comfort. Eight to ten subjects rated it as comfortable and providing good protection, which was rated excellent; five to seven subjects rated it as comfortable and providing good protection, which was rated good; two to four subjects rated it as fair; and zero to one subjects rated it as poor.

[0028] The present invention will be further described below with reference to the following embodiments and comparative examples, but the protection scope of the present invention is not limited thereto.

[0029] Example 1

[0030] On a 16G hosiery machine, the upper part A uses a machine-covered yarn (Z twist, 600 T / m) made of 40D polyurethane fiber / 70D-48f-polyamide DTY; the lower part B uses a machine-covered yarn (S twist, 600 T / m) made of 40D polyurethane fiber / 70D-48f-polyamide DTY. The weave is a plain stitch to produce a knitted fabric. After scouring (scouring agent 1g / L, 75℃×15 minutes), dyeing (95℃×30 minutes), and finishing (antistatic agent 1g / L, neutralizing acid 1g / L), the resulting fabric is a continuous tubular structure with twist in both the S and Z directions, with angles α and β of 70°. Specific parameters are shown in Table 1.

[0031] Example 2

[0032] On a 16G hosiery machine, the upper part A uses 50D / 24f polyester DTY two-ply yarn (Z twist, 1000 T / m); the lower part B uses 50D / 24f polyester DTY two-ply yarn (S twist, 1000 T / m). After scouring (scouring agent 1g / L, 95℃ for 15 minutes), dyeing (130℃ for 30 minutes), and finishing (antistatic agent 1g / L, neutralizing acid 1g / L), the resulting continuous tubular structure has twist in both the S and Z directions, with angles α and β of 60°. Specific parameters are shown in Table 1.

[0033] Example 3

[0034] On a 16G hosiery machine, 150D-48f polyester DTY (Z twist, 2000 T / m) was used for the upper part A; 150D-48f polyester DTY (S twist, 2000 T / m) was used for the lower part B. Other parameters were the same as in Example 2, resulting in a continuous tubular structure with angles α and β of 45°. Specific parameters are shown in Table 1.

[0035] Example 4

[0036] On a 16G hosiery machine, the upper portion A was made of 150D-48f polyester DTY (Z twist, 2000 T / m); the lower portion B was made of 150D-48f polyester DTY (S twist, 1000 T / m). All other parameters were the same as in Example 2, resulting in a continuous tubular structure with an angle α of 45° and a β of 60°. Specific parameters are shown in Table 1.

[0037] Example 5

[0038] On a 16G hosiery machine, 300D-48f polyester DTY (Z twist, 2000 T / m) was used for the upper portion A; 300D-48f polyester DTY (S twist, 2000 T / m) was used for the lower portion B. All other parameters were the same as in Example 2, resulting in a continuous tubular structure with angles α and β of 45°. Specific parameters are shown in Table 1.

[0039] Example 6

[0040] On a 16G hosiery machine, the upper part A used 150D-48f polyester DTY (Z twist, 2500 T / m); the lower part B used 150D-48f polyester DTY (S twist, 2500 T / m). The remaining parameters were the same as in Example 2. A continuous tubular structure with angles α and β of 40° was obtained. Specific parameters are shown in Table 1.

[0041] Example 7

[0042] On a 16G hosiery machine, the upper portion A used 50D-24f polyester DTY two-ply yarn (Z twist, 400 T / m); the lower portion B used 50D-24f polyester DTY two-ply yarn (S twist, 400 T / m). Other procedures were the same as in Example 2, resulting in a continuous tubular structure with angles α and β of 88°. Specific parameters are shown in Table 1.

[0043] Example 8

[0044] On a 16G hosiery machine, the upper portion A was made of a 40D polyurethane fiber / 70D-48f polyamide DTY covered yarn (Z twist, 600 T / m); the lower portion B was made of a 40D polyurethane fiber / 70D-48f polyamide DTY covered yarn (S twist, 600 T / m). The remaining conditions were the same as in Example 1, resulting in a continuous tubular structure with angles α and β of 80°. Specific parameters are shown in Table 1.

[0045] Kneepads, sleeves or garments made from the tubular structures of Examples 1-8.

[0046] Comparative Example 1

[0047] On a 16G hosiery machine, the upper portion A and lower portion B of the tubular structure were knitted separately and connected by sewing. The remaining steps were the same as in Example 4, resulting in a discontinuous tubular structure with an angle α of 45° and an angle β of 60°. Specific parameters are shown in Table 1.

[0048] Comparative Example 2

[0049] On a 16G hosiery machine, polyester 150D-48f-polyester DTY (Z twist, 2000 T / m) was used to weave a tubular structure, with the rest being the same as in Example 3, to obtain a continuous tubular structure with an angle α of 45°.

[0050] See Table 1 for specific parameters.

[0051]

[0052] According to Table 1,

[0053] (1) It can be seen from Example 1 and Example 8 that, under the same conditions, the angle obtained by the cylindrical structure with the upper and lower yarn twists of 600 T / m is smaller than that of the cylindrical structure with the upper and lower yarn twists of 400 T / m, and the compression comfort of the former is better than that of the latter.

[0054] (2) It can be seen from Example 2 and Example 7 that, under the same conditions, the angle obtained by the cylindrical structure with the upper and lower yarn twist of 1000 T / m is smaller than that of the cylindrical structure with the upper and lower yarn twist of 400 T / m, and the compression comfort of the former is better than that of the latter.

[0055] (3) It can be seen from Examples 3 and 6 that, under the same conditions, the angle obtained by the cylindrical structure with the upper and lower yarn twists of 2000 T / m is larger than that of the cylindrical structure with the upper and lower yarn twists of 2500 T / m, and the compression comfort of the former is better than that of the latter.

[0056] (4) It can be seen from Examples 3 and 5 that, under the same conditions, the angle obtained by the cylindrical structure with upper and lower yarn fineness of 150D is at the same level as that of the cylindrical structure with upper and lower yarn fineness of 300D, and the compression comfort of the former is better than that of the latter.

[0057] (5) From Comparative Example 1 and Example 4, it can be seen that under the same conditions, the compression comfort of the cylindrical structure with discontinuous (sewn) upper and lower parts is far inferior to that of the cylindrical structure with continuous upper and lower parts.

[0058] (6) From Comparative Example 2 and Example 3, it can be seen that under the same conditions, the compression comfort of the cylindrical structure with only one direction is far inferior to that of the cylindrical structure with two directions of twisting, upper and lower.

Claims

1. A cylindrical structure, characterized in that: The structure is in a continuous state, including an upper part A, a connecting line (1) and a lower part B, and there is twisting in at least two directions, S and Z, on the cylindrical structure, and the twist of the yarn forming the structure is more than 600 twists / m; there are skewed coil longitudinal rows (2) in the upper part A, and there are skewed coil longitudinal rows (3) in the lower part B, and the intersection of the skewed coil longitudinal rows (2) in the upper part A and the skewed coil longitudinal rows (3) in the lower part B is a, and a is located on the connecting line (1). ; A vertical line (4) is drawn as a tangent to the connecting line (1) at the intersection a, and the skewed coil longitudinal row (2) in the upper portion A and the skewed coil longitudinal row (3) in the lower portion B are both on the same side of the vertical line (4); and the angle between the skewed coil longitudinal row (2) in the upper portion A and the connecting line (1) is α, and the angle between the skewed coil longitudinal row (3) in the lower portion B and the connecting line (1) is β; the angles α and β are both greater than 0° and less than 90°.

2. The cylindrical structure according to claim 1, wherein: The fiber raw material forming the structure is one or more of polyurethane fibers, polyester fibers, polyamide fibers, natural fibers, and regenerated fibers.

3. A kneepad, sleeve or garment comprising the tubular structure according to claim 1 or 2.

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