Sprayed velvet yarn and preparation process thereof

Abstract

The invention discloses a spray velvet yarn which comprises a core yarn, a wool layer and an outer covering yarn, the core yarn is formed by twisting and winding a plurality of low-elasticity filaments, the wool layer is composed of disordered short fibers, and the disordered short fibers of the wool layer comprise two types, one type is bottom silk formed by short fibers twisted among the low-elasticity filaments in the twisting and winding process and short fibers with roots penetrating into dynamic gaps among monofilaments forming the low-elasticity filaments, and the other type is free velvet formed by short fibers mutually adhered and wound together with the bottom silk; the outer wrapping thread is a high-elasticity filament which is twisted and wound on the outer side of the knitting wool layer, and the twisting and winding direction is opposite to the twisting direction of the core thread. In this way, the soft and fluffy feeling of the yarn can be enhanced, and meanwhile yarn falling is reduced.

Description

Technical Field

[0001] The invention relates to the field of textile fabrics, in particular to a sprayed fleece yarn and a preparation process thereof. Background Art

[0002] With the development of the times and the advancement of science and technology, people have higher and higher requirements for food, clothing, housing and transportation. Sprayed wool yarn, as a fluffy, soft and excellent thermal insulation yarn, has been widely used in clothing fabrics. In actual production, traditional sprayed wool yarn generally sprays disordered fibers into the mesh first, and then weaves the mesh into yarn. In actual use, this traditional product sometimes causes the yarn to be compacted when it is repeatedly stressed due to the tensile characteristics of the mesh structure, and the thermal insulation performance is reduced. In response to this problem, our brother company has developed a sprayed wool yarn CN 210127289 U. This product adds a core wire structure on the basis of traditional sprayed wool yarn, with better overall strength, and limits the stretching length of the mesh, reducing the compaction problem caused by excessive stretching. However, after long-term use, customers reported that due to the process problems of the sprayed wool yarn, the fibers often fall out of the mesh, and customers hope to further improve the overall soft and fluffy feeling without reducing the thermal insulation performance. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a sprayed fleece yarn and a preparation process thereof, which can have the softness and fluffiness characteristics superior to the traditional sprayed fleece yarn and solve the problem of silk shedding at the same time.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a sprayed velvet yarn, the sprayed velvet yarn includes: a core wire, a velvet layer and an outer wire, the core wire is formed by twisting and winding multiple low-elastic filaments, the velvet layer is composed of disordered short fibers, and the disordered short fibers of the velvet layer include two categories, one is a base wire composed of short fibers twisted between the low-elastic filaments during the twisting and winding process and short fibers with their roots inserted into the dynamic gaps between the monofilaments constituting the low-elastic filaments, and the other is a free velvet composed of short fibers adhered and entangled with the base wire, the outer wire is a high-elastic filament, and the high-elastic filament is twisted and wound on the outside of the velvet layer, and the twisting and winding direction is opposite to the twisting direction of the core wire.

[0005] In a preferred embodiment of the present invention, the specification of the filaments constituting the core wire is 30D-150D and each filament is composed of no less than 16 monofilaments.

[0006] In a preferred embodiment of the present invention, the random fibers include polyester fibers, nylon fibers, cotton fibers, viscose fibers and bamboo fibers.

[0007] In a preferred embodiment of the present invention, the length of the random short fibers is 5 to 15 mm.

[0008] In a preferred embodiment of the present invention, the twisting direction of the core wire is s direction, and the number of twists is 10-100.

[0009] In a preferred embodiment of the present invention, the twisting direction of the outer covered wire is Z direction, and the number of twists is 10-50.

[0010] In order to solve the above technical problems, another technical solution adopted by the present invention is: to provide a preparation process of a sprayed fleece yarn, the preparation process of the sprayed fleece yarn comprising the following steps:

[0011] The first step is to select the raw materials of the core wire, outer wire and fleece layer according to production requirements;

[0012] In the second step, multiple low-elastic filaments constituting the core wire are simultaneously added into the mouth of the forming tube, twisted and wound, and then drawn out from the bottom of the tube, and the angles between adjacent filaments are equal and not less than 90°;

[0013] In the third step, the short fibers are dried and fed into a combing box for combing by a combing mechanism. Then, the short fibers are sprayed into the forming tube from the outlet of the combing box from above the tube mouth of the forming tube. A part of the short fibers are twisted in the twisted core wire by the process of twisting and winding the filaments. At the same time, a part of the short fibers will penetrate into the dynamic gaps between the monofilaments formed by the twisting and winding of the low-elastic filaments. These two kinds of short fibers constitute the base wire of the velvet layer 2. Another part of the short fibers will be entangled and adhered to the base wire under the action of wind force in the tube, and finally form free velvet on the surface layer.

[0014] The fourth step is to reversely twist the outer covering wire and wind it on the yarn drawn out from the bottom of the tube, wrap the free velvet adhering to the bottom wire on the core wire, and then drop the yarn to make the finished product of the sprayed velvet yarn.

[0015] The beneficial effects of the present invention are as follows: the present invention is further optimized on the basis of the existing production process of the hair-spraying yarn, and the disordered short fibers retained in the form of a mesh belt are replaced by the use of the core wire to spray during the twisting and winding process to sandwich the short fibers in the middle of the core wire to form a base wire, and then the free velvet is retained in the outer layer by the hooking and adhesion effect of the base wire to form a stable coating structure, and the structure is further stabilized by using the outer wire for reverse coating. In the actual finished product, it is found that this yarn is not only softer and fluffier, but also the velvet on the surface is not easy to fall off, and it has a significant feathery feeling, obvious surface fluff characteristics, and is more skin-friendly than traditional hair-spraying yarn, perfectly meeting the stringent requirements of customers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the finished product structure of a preferred embodiment of the present invention;

[0017] Figure 2is a schematic diagram of the molding method of the embodiment shown;

[0018] The markings of the components in the accompanying drawings are as follows:

[0019] 1. Core wire, 2. Outer wire, 3. Wool layer, 4. Combing box outlet, 5. Forming tube. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention.

[0021] See also Figure 1 and Figure 2 , the embodiment of the present invention includes:

[0022] Example 1

[0023] A sprayed velvet yarn, comprising: a core thread 1, a velvet layer 3 and an outer covering thread 2, wherein the core thread 1 is formed by twisting and winding two polyester low-elastic filaments of a specification of 30D16F in the S direction with a twist number of 10, the velvet layer 2 is composed of disordered short fibers formed by mixing polyester staple fibers and viscose staple fibers with a length of 5 to 15 mm in a ratio of 1:1, the disordered short fibers of the velvet layer 2 include two types, one type is a base wire composed of short fibers twisted between the low-elastic filaments during the twisting and winding process and short fibers whose roots penetrate into the dynamic gaps between the monofilaments constituting the low-elastic filaments, and the other type is a free velvet composed of short fibers adhered to and entangled with the base wire, the outer covering thread 2 is a PBT high-elastic filament, and the PBT high-elastic filament is twisted and wound on the outside of the velvet layer 3 in the Z direction with a twist number of 30.

[0024] Example 2

[0025] A sprayed velvet yarn, comprising: a core thread 1, a velvet layer 3 and an outer covering thread 2, wherein the core thread 1 is formed by twisting and winding two polyester low-elastic filaments of a specification of 100D24F in the S direction with a twist number of 75, the velvet layer 2 is composed of disordered short fibers formed by mixing polyester fibers with a length of 5 to 15 mm and cotton fibers and bamboo fibers in a ratio of 2:1:1, the disordered short fibers of the velvet layer 2 include two types, one type is a base wire composed of short fibers twisted between the low-elastic filaments during the twisting and winding process and short fibers whose roots penetrate into the dynamic gaps between the monofilaments constituting the low-elastic filaments, and the other type is a free velvet composed of short fibers adhered to and entangled with the base wire, the outer covering thread 2 is a polyester high-elastic filament, the PBT high-elastic filament is twisted and wound on the outside of the velvet layer 3 in the Z direction with a twist number of 50.

[0026] Example 3

[0027] A sprayed velvet yarn, comprising: a core thread 1, a velvet layer 3 and an outer covering thread 2, wherein the core thread 1 is formed by twisting and winding two polyester low-elastic filaments of a specification of 150D36F in the S direction with a twist number of 100, the velvet layer 2 is composed of disordered short fibers formed by mixing nylon fibers and viscose fibers with a length of 5 to 15 mm in a ratio of 1:1, the disordered short fibers of the velvet layer 2 include two types, one type is a base wire composed of short fibers twisted between the low-elastic filaments during the twisting and winding process and short fibers whose roots penetrate into the dynamic gaps between the monofilaments constituting the low-elastic filaments, and the other type is a free velvet composed of short fibers adhered and entangled with the base wire, the outer covering thread 2 is a polyester high-elastic filament, and the PBT high-elastic filament is twisted and wound on the outside of the velvet layer 3 in the Z direction with a twist number of 10.

[0028] The preparation process of Examples 1 to 3 comprises the following steps:

[0029] The first step is to select the raw materials of the core wire 1, the outer wire 2 and the wool layer 3 according to the production requirements;

[0030] In the second step, two low-elastic filaments constituting the core wire 1 are simultaneously added into the tube mouth of the forming tube 5, with the angle between the two filaments being 120°. The two low-elastic filaments are twisted and wound in the Z direction in the forming tube 5 and then drawn out from the bottom of the tube.

[0031] In the second step, the short fibers are dried and fed into a combing box for combing by a combing mechanism. Then, the short fibers are randomly sprayed into the forming tube 5 from the outlet 4 of the combing box from above the tube mouth of the forming tube 5. A part of the short fibers are twisted in the twisted core wire by the process of twisting and winding the low-elastic filaments. At the same time, a part of the short fibers will penetrate into the dynamic gaps between the single filaments formed by the twisting and winding of the low-elastic filaments. These two kinds of short fibers constitute the base wire of the velvet layer 2. Another part of the short fibers will be entangled and adhered to the base wire under the action of wind force in the tube, and finally form free velvet on the surface layer.

[0032] The third step is to twist the outer wire 2S in the direction of the yarn drawn out from the bottom of the tube, and to wrap the free velvet adhering to the bottom wire on the core wire, and then drop the yarn to make the finished product of the sprayed velvet yarn.

[0033] The three specifications of sprayed yarns manufactured by the above method are not only fluffy, soft and warm as a whole, but also have a significant fluffy and hairy feel on the surface, excellent skin-friendliness, and the fluff is not easy to fall off. In comparison, the product of Example 1 has a relatively small base yarn density, is more fluffy overall, and has the best surface hairiness. The base yarn density of Example 3 is relatively large, the density of free velvet on the surface is larger, and the fluffy feel is relatively stronger.

[0034] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A sprayed fleece yarn, characterized in that: The sprayed velvet yarn includes: a core thread, a velvet layer and an outer covering thread, the core thread is formed by twisting and winding a plurality of low-elastic filaments, the velvet layer is composed of disordered short fibers, and the disordered short fibers of the velvet layer include two categories, one is a base thread composed of short fibers twisted between the low-elastic filaments during the twisting and winding process and short fibers whose roots penetrate into the dynamic gaps between the monofilaments constituting the low-elastic filaments, and the other is free velvet composed of short fibers adhered and entangled with the base thread, and the outer covering thread is a high-elastic filament, and the high-elastic filament is twisted and wound on the outside of the velvet layer, and the twisting and winding direction is opposite to the twisting direction of the core thread.

2. The spray yarn according to claim 1, characterized in that: The specifications of the filaments constituting the core wire are 30D to 150D, and each filament is composed of no less than 16 single filaments.

3. The spray yarn according to claim 1, characterized in that: The random fibers include polyester fibers, nylon fibers, cotton fibers, viscose fibers and bamboo fibers.

4. The spray yarn according to claim 1, characterized in that: The length of the random short fibers is 5 to 15 mm.

5. The spray yarn according to claim 1, characterized in that: The twisting direction of the core wire is s direction, The number of twists is 10 to 100.

6. The spray yarn according to claim 1, characterized in that: The twisting direction of the outer covered wire is the Z direction, and the twist number is 10 to 50.

7. A process for preparing the sprayed yarn according to any one of claims 1 to 6 comprises the following steps: The first step is to select the raw materials of the core wire, outer wire and fleece layer according to production requirements; In the second step, multiple low-elastic filaments constituting the core wire are simultaneously added into the mouth of the forming tube, twisted and wound, and then drawn out from the bottom of the tube, and the angles between adjacent filaments are equal; In the second step, the short fibers are dried and fed into a combing box for combing by a combing mechanism. Then, the short fibers are sprayed into the forming tube from the outlet of the combing box from above the tube mouth of the forming tube. A part of the short fibers are twisted and wound in the twisted core wire by the process of twisting and winding the filaments. At the same time, a part of the short fibers will penetrate into the dynamic gaps between the monofilaments formed by the twisting and winding of the low-elastic filaments. These two kinds of short fibers constitute the base wire of the velvet layer 2. Another part of the short fibers will be entangled and adhered to the base wire under the action of wind force in the tube, and finally form free velvet on the surface layer. The third step is to reversely twist the outer covering wire and wind it on the yarn drawn out from the bottom of the tube, wrap the free velvet adhering to the bottom wire on the core wire, and then drop the yarn to make the finished spray yarn.

8. The process for preparing the sprayed yarn according to claim 7, characterized in that: In the step 1, the angle between adjacent filaments is not less than 90°.

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