Preparation method of ultra-soft anti-cutting yarn and ultra-thin breathable 21-needle anti-cutting glove product

Abstract

The invention relates to the technical field of textile yarns and anti-cutting gloves, in particular to a preparation method of super-soft anti-cutting yarns, which comprises the steps of anti-cutting metal wire twisting and coating, and is characterized in that high-pressure air coating treatment is performed after the coating step; the high-pressure air coating treatment step specifically comprises the step of carrying out high-pressure air continuous blowing coating treatment on porous polyamide fibers II, the yarn prepared in the coating step and spandex to prepare the super-soft anti-cutting yarn. The super-soft anti-cutting yarn is made into a glove product by using a 21-needle full-automatic computerized flat knitting machine by adopting a single-yarn knitting process. The prepared gloves are light, thin, soft, rich in elasticity and fit and comfortable to wear, tests show that the anti-cutting grade of the gloves reaches the American standard ASTM A8 grade, and meanwhile the air permeability reaches 600 mm / s.

Description

Technical Field

[0001] The invention relates to the field of yarn and knitting, and in particular to a preparation method of an ultra-soft cut-resistant yarn and an ultra-thin breathable 21-gauge cut-resistant glove product. Background Art

[0002] In many industries, such as mechanical processing, metal manufacturing, glass processing, and automobile manufacturing, workers' hands are vulnerable to cuts, scratches, and other injuries. Anti-cut gloves are functional gloves. Existing high-cut-resistant gloves are generally divided into 7-needle, 10-needle, 13-needle, 15-needle, and 18-needle. As the number of needles increases, the requirements for the thickness of the yarn material are becoming finer and finer. At the same time, the restrictions on yarn materials are also increasing. The glove products are becoming thinner and thinner, and it is becoming more and more difficult to achieve a higher level of cut resistance. However, there are still some users who require products that are both light, breathable, and highly cut-resistant. This makes the current products unable to meet the requirements of users. Problems such as stiffness, difficulty in bending, and thickness during use have greatly affected the user experience of the gloves, but have increased the burden on the operators.

[0003] After searching, Chinese patent CN221218044U discloses a soft anti-cutting yarn and ultra-thin soft anti-cutting gloves. The patent uses ultra-fine tungsten wire wrapped with silk thread as anti-cutting yarn, and weaves anti-cutting gloves from it. Although this kind of gloves has strong anti-cutting performance, its air permeability, softness, fluffiness, softness and comfort are not very ideal.

[0004] Therefore, a new technical means is needed to solve the above technical problems. Summary of the invention

[0005] The purpose of the present invention is to provide a method for preparing a super-soft cut-resistant yarn and to use the super-soft cut-resistant yarn to make ultra-thin, breathable and elastic gloves.

[0006] The technical solution of the present invention: A method for preparing an ultra-soft cut-resistant yarn comprises the steps of twisting and coating an anti-cut metal wire, and performing a high-pressure air coating treatment after the coating step; the high-pressure air coating treatment step is specifically: performing a high-pressure air continuous blowing coating treatment on a porous nylon fiber II, the yarn obtained in the coating step, and spandex to obtain an ultra-soft cut-resistant yarn. The parameters of the high-pressure air continuous blowing coating treatment are set to 90-110 network numbers / meter, the network fluffiness is an elliptical structure, and the Rabi coefficient of the spandex is 1.8-2.5. The linear density of the porous nylon fiber II is 20D, 40D, 50D or 70D, and the amount of the porous nylon fiber II accounts for 8-15% of the total weight of the ultra-soft cut-resistant yarn. The linear density of the spandex is 20D, 30D or 40D, and the amount of the spandex accounts for 2-5% of the total weight of the ultra-soft cut-resistant yarn.

[0007] The anti-cutting metal wire twisting step is specifically as follows: twisting the auxiliary yarn I with the steel wire and the tungsten wire, with a twist of 500-800 twists / m, to obtain the steel-tungsten wire twisted yarn. The mass proportion of the steel wire in the steel-tungsten wire twisted yarn is 30-45%; the mass proportion of the tungsten wire is 35-50%; the mass proportion of the auxiliary yarn I is 5-35%. The auxiliary yarn I is one of nylon, polyester, bio-based nylon, polylactic acid fiber and cotton yarn, and the specification of the linear density of the auxiliary yarn I is 30-100D. The auxiliary yarn I is nylon, and the specification of the linear density of the nylon is 40D, 50D, 70D or 100D. The diameter of the steel wire is 0.03mm, 0.035mm or 0.04mm; the diameter of the tungsten wire is 0.015mm, 0.02mm, 0.025mm or 0.03mm.

[0008] The coating step is specifically as follows: coating the outer layer of the twisted yarn prepared in the anti-cutting metal wire twisting step with high molecular weight polyethylene fiber, with a twist of 200-290 twists / m, to prepare the twisted coated anti-cutting yarn. The molecular weight of the polyethylene fiber is 100-500W, and the specification of the linear density is 50D, 75D, or 100D. The amount of the polyethylene fiber accounts for 25-40% of the weight of the twisted yarn prepared in the anti-cutting metal wire twisting step.

[0009] An ultra-thin breathable 21-gauge cut-resistant glove product is made from the ultra-soft cut-resistant yarn described above using a 21-gauge fully automatic computerized flat knitting machine and a single yarn knitting process.

[0010] Beneficial effects of the present invention: 1. The present invention adopts high-pressure air treatment technology, and the treated yarn is more fluffy and soft, and the porous nylon fiber II covers the twisted and coated anti-cutting yarn more evenly, with a large covering area to avoid the exposure of the metal wire. At the same time, the spandex yarn is added to give the product elasticity, shrinkage and tightness, so that the gloves made of it are more fit, comfortable to wear and highly flexible to operate.

[0011] 2. The present invention uses steel wire, tungsten wire and ultra-high molecular weight polyethylene as raw materials. The steel wire is different from ordinary 304 or 316L steel wire. It is a steel wire with modified strength and hardness obtained in the cold drawing production process of 304 steel wire. The hardness of tungsten wire is second only to diamond, the hardest material in the world. The prepared textiles are slender and thin, and China's tungsten wire reserves account for 75% of the global total reserves. Therefore, the present invention has the advantages of wide raw material sources and low cost. The density of ultra-high molecular weight polyethylene is less than 1, and it has many advantages such as softness, coolness, and cut resistance.

[0012] 3. The glove textiles prepared by the present invention are not only light, soft, breathable, and highly fit, but also have ultra-high cut resistance, excellent electrical conductivity, chemical stability, bending resistance, and not easy to deform after washing. At the same time, they can reach the American standard ASTM cut resistance grade A8 and above, the European standard ISO grade F and above, the EU EN388 standard wear resistance grade 4, tear resistance grade 4, puncture resistance grade 3, and the air permeability reaches 600mm / s. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the steel wire tungsten wire twisted yarn of the present invention; Figure 2 It is a schematic structural diagram of the twisted and coated anti-cut yarn of the present invention; Figure 3 It is a schematic structural diagram of the ultra-soft cut-resistant yarn of the present invention.

[0014] In the figure, 1, auxiliary yarn I, 201, steel wire, 202, tungsten wire, 3, polyethylene fiber, 4, porous nylon fiber auxiliary yarn II, 5, spandex. DETAILED DESCRIPTION

[0015] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with examples and drawings. The following examples are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention. Example

[0016] A method for preparing an ultra-soft cut-resistant yarn comprises twisting and coating steps of cut-resistant metal wires and a high-pressure air coating treatment step; Figure 1 As shown, the anti-cutting metal wire twisting step is specifically as follows: twisting the auxiliary yarn Ⅰ1 with the steel wire 201 and the tungsten wire 202 (the steel wire and the tungsten wire are arranged side by side), with a twist of 500-800 twists / m, to obtain the steel-tungsten wire twisted yarn. The mass proportion of the steel wire in the steel-tungsten wire twisted yarn is 30%; the mass proportion of the tungsten wire is 50%; and the mass proportion of the auxiliary yarn Ⅰ is 20%. The auxiliary yarn Ⅰ1 is nylon, and the linear density specification is 50D. The diameter of the steel wire is 0.035mm, and the diameter of the tungsten wire is 0.02mm.

[0017] like Figure 2 As shown, the coating step is specifically as follows: polyethylene fiber 3 with a molecular weight of 500W and a linear density of 100D is coated on the outer layer of the steel-tungsten wire twisted yarn, with a twist of 200-290 twists / m, to prepare a twisted and coated anti-cutting yarn. The amount of polyethylene fiber used accounts for 35% of the weight of the steel-tungsten wire twisted yarn.

[0018] like Figure 3As shown, the high-pressure air coating treatment steps are as follows: the porous nylon fiber II 4, the twisted coated anti-cutting yarn and the spandex 5 are subjected to high-pressure air continuous blowing and coating treatment to obtain the super-soft anti-cutting yarn, the treatment parameters are set to 90-110 network numbers / meter, the network fluffiness is an elliptical structure, the spandex has a Rabi coefficient of 2.5, a linear density of 20D, and an amount of 2% of the total weight of the super-soft anti-cutting yarn. The specification of the linear density of the porous nylon fiber II is 50D, and the amount of the super-soft anti-cutting yarn is 15% of the total weight.

[0019] Using a 21-needle fully automatic computer knitting machine, the ultra-soft anti-cut yarn is knitted into gloves using a single yarn knitting process. Each glove weighs only 16.3g, is light, soft and elastic, and fits comfortably. After testing, the gloves' cut resistance level meets the American standard ASTM A8.

[0020] The preparation methods in Examples 2-12 and Comparative Examples 1-5 are the same as those in Example 1, except for the differences shown in the following table:

[0021]

[0022] Note: The auxiliary yarn I in Comparative Example 1 and Comparative Example 2 and Examples 2 to 3 is nylon, the auxiliary yarn I in Comparative Example 3 and Comparative Example 4 and Example 4 is polyester, the auxiliary yarn I in Comparative Example 5 and Examples 5 to 7 is bio-based nylon, the auxiliary yarn I in Examples 8 to 10 is polylactic acid fiber, and the auxiliary yarn I in Examples 11 and 12 is cotton yarn.

[0023] Although comparative examples 1 and 3 have achieved the same anti-cutting grade, the weight of the product has increased, the gloves are bulky and uncomfortable to wear, and the air permeability is poor. The present invention uses a product of the same grade with 21 stitches, which has a lower weight, good air permeability, and is flexible and comfortable to wear and operate.

[0024] It can be seen from the above embodiments and comparative examples that the 21-gauge textiles prepared within the data range of the present invention can reach the American standard ASTM cut resistance grade A8 and above; compared with 15-gauge and 18-gauge gloves with the same cut resistance grade, they have lighter weight and better air permeability.

[0025] The air permeability test in the embodiment is carried out according to the provisions of the national standard GB / T5453.

Claims

1. A method for preparing an ultra-soft cut-resistant yarn, comprising the steps of twisting and coating cut-resistant metal wires, characterized in that: After the coating step, a high-pressure air coating treatment is performed; the high-pressure air coating treatment step is specifically: the porous nylon fiber II, the yarn obtained in the coating step and the spandex are subjected to high-pressure air continuous blowing coating treatment to obtain an ultra-soft cut-resistant yarn.

2. The method for preparing a super soft cut-resistant yarn according to claim 1, characterized in that: The parameters of the high-pressure air continuous blowing coating treatment are set to 90-110 network numbers / meter, the network bulkiness is an elliptical structure, and the Rabi coefficient of the spandex is 1.8-2.

5.

3. The method for preparing a super soft cut-resistant yarn according to claim 1, characterized in that: The linear density of the porous nylon fiber II is 20D, 40D, 50D or 70D, and the amount of the porous nylon fiber II accounts for 8-15% of the total weight of the ultra-soft cut-resistant yarn.

4. The method for preparing a super soft cut-resistant yarn according to claim 1, characterized in that: The linear density of the spandex is 20D, 30D or 40D, and the amount of the spandex used accounts for 2-5% of the total weight of the super soft cut-resistant yarn.

5. The method for preparing a super soft cut-resistant yarn according to claim 1, characterized in that: The anti-cutting metal wire twisting step is specifically as follows: twisting the auxiliary yarn I with the steel wire and the tungsten wire, with a twist of 500-800 twists / m, to obtain a steel-tungsten wire twisted yarn.

6. The method for preparing a super soft cut-resistant yarn according to claim 5, characterized in that: The mass proportion of steel wire in the steel-tungsten wire twisted yarn is 30-45%; the mass proportion of tungsten wire is 35-50%; the mass proportion of auxiliary yarn I is 5-35%.

7. The method for preparing a super soft cut-resistant yarn according to claim 5, characterized in that: The auxiliary yarn I is one of nylon, polyester, bio-based nylon, polylactic acid fiber and cotton yarn, and the specification of the linear density of the auxiliary yarn I is 30-100D.

8. The method for preparing a super soft cut-resistant yarn according to claim 7, characterized in that: The auxiliary yarn I is nylon, and the specification of the linear density of the nylon is 40D, 50D, 70D or 100D.

9. The method for preparing a super soft cut-resistant yarn according to claim 5, characterized in that: The diameter of the steel wire is 0.03 mm, 0.035 mm or 0.04 mm; the diameter of the tungsten wire is 0.015 mm, 0.02 mm, 0.025 mm or 0.03 mm.

10. The method for preparing a super soft cut-resistant yarn according to claim 1, characterized in that: The coating step is specifically as follows: coating the outer layer of the twisted yarn prepared in the anti-cutting metal wire twisting step with high molecular weight polyethylene fiber, with a twist of 200-290 twists / m, to prepare the twisted and coated anti-cutting yarn.

11. The method for preparing a super soft cut-resistant yarn according to claim 10, characterized in that: The molecular weight of the polyethylene fiber is 100-500W, and the linear density is 50D, 75D, or 100D. The amount of the polyethylene fiber accounts for 25-40% of the weight of the twisted yarn prepared in the anti-cut metal wire twisting step.

12. An ultra-thin breathable 21-gauge cut-resistant glove product, characterized in that: The ultra-soft cut-resistant yarn described in any one of claims 1 to 11 is used to make gloves using a 21-needle fully automatic computerized flat knitting machine and a single yarn knitting process.

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