Production process of color-changing linen-like threads

Abstract

The invention discloses a production process of color-changing linen-like yarns. The production process comprises the following production steps: (1) preparing spandex yarns; (2) preparing polyester linen-like threads; (3) the spandex filaments in the step (1) and the polyester linen-like threads in the step (2) are compounded to form fibers (4), a speed difference is formed between GR1 and GR2 in the forming process so that a plurality of nodes can be formed in the length direction of the compounded fibers (4), and in the initial state, the different nodes show different colors; and (4) stretching the fiber (4) to increase color developing nodes, and the color displayed by the fiber (4) is different from the color displayed by the nodes in the step (3). According to the production process of the color-changing linen-like threads, the color diversity is improved.

Description

Technical Field

[0001] The invention relates to the field of textile technology, and more particularly to a production process of color-changing linen-like silk. Background Art

[0002] As a type of chemical fiber filament, linen-like filament, relying on unique textile processes and chemical fiber manufacturing technologies, cleverly combines the advantages of linen fiber fabrics, such as coolness, comfort, crispness and breathability, while also incorporating the excellent properties of the other two fibers, fully meeting the needs of various applications. However, it should not be ignored that linen-like fabrics also have some inherent drawbacks. The fabric color is relatively monotonous and lacks a sense of fashion. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art, provide a production process for color-changing imitation linen silk, and improve the diversity of colors.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a production process of color-changing imitation linen yarn, comprising the following production steps: ① preparing spandex yarn; ② preparing polyester imitation linen yarn; ③ compounding the spandex yarn in step ① with the polyester imitation linen yarn in step ② to form a fiber (4), forming a speed difference between GR1 and GR2 during the forming process, so that a plurality of nodes are formed in the length direction of the composite fiber (4), and in the initial state, different nodes display different colors; ④ stretching the fiber (4) to increase the color-displaying nodes, and the displayed color thereof is different from the color displayed by the nodes in step ③.

[0005] The present invention is further configured such that the spandex yarn is prepared by melt spinning. In the melt spinning preparation process, the seven temperature sections of the twin-screw extruder from the inlet end to the outlet end are: 145°C-165°C, 180°C-190°C, 188°C-200°C, 198°C-205°C, 185°C-194°C, 155°C-163°C, the side blowing wind speed is 0.45m / s-0.5m / s, and the temperature is 15°C-16°C.

[0006] The present invention is further configured such that the cross section of the spandex yarn is circular.

[0007] The present invention is further configured that the polyester imitation linen yarn is prepared by a melt spinning process. During the melt spinning process, the screw temperature is controlled at 265°C-280°C, the side blowing temperature is controlled at 18°C-22°C, the side blowing speed is 0.35m / s-0.45m / s, the spinning speed is 25000m / min-2850m / min, and the MOY elongation is 146%-175%.

[0008] The present invention is further configured such that the cross section of the polyester imitation linen yarn is a regular hexagon, a rhombus, or a four-leaf clover shape.

[0009] The present invention is further configured such that the spandex yarn and the polyester imitation linen yarn are compounded through a texturing process, and the texturing process is as follows: the deformation temperature of the first hot box is 200°C-210°C, the setting temperature of the second hot box is 160°C-165°C, the texturing draft ratio (DR) is 0.75-0.8, the vehicle speed is 380m / min-400m / min, and the network pressure is 0.20MPa-0.22MPa.

[0010] The present invention is further configured such that, in an initial state, the color bodies displayed by different nodes include color body one, color body two, color body three, and color body four.

[0011] The present invention is further configured such that the color bodies displayed by the node in step ④ include color body one, color body two, color body three, color body four, and color body five.

[0012] The present invention is further configured to include a shaping device, which is used to shape the single-line body formed by the spandex yarn and the polyester imitation linen yarn being ejected through the spinneret. The shaping device includes a movable seat, a limiting wheel, and a winding wheel. The movable seat is equipped with two guide wheels three, and the two guide wheels three and the limiting wheel are respectively located on both sides of the transmission direction of the single-line body. The limiting wheel is located between the two guide wheels three. The guide wheel three can move toward the side close to the single-line body so that the guide wheel three and the limiting wheel respectively abut the single-line body and form a curved portion.

[0013] The present invention is further configured such that a plurality of movable seats are provided along the transmission direction of the single-line body.

[0014] In summary, the present invention has the following beneficial effects:

[0015] 1. By combining spandex and polyester imitation linen yarn to form fibers, a speed difference is created between GR1 and GR2 during the molding process, resulting in multiple nodes along the length of the composite fiber. Different nodes display different colors. Furthermore, by stretching the fiber, the small, thick nodes that were originally squeezed and covered are exposed again, increasing the color display and showing different color variations.

[0016] 2. When the single thread is compounded into fiber, it is stretched. The setting of the bending part makes the single thread form a rebound trend in the length direction. The composite bonding between the single threads is tighter, forming a better color mixing effect. After the fabric is formed, it has a stronger fluffiness and forms a high elasticity and high comfort effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of a spinneret 1 in the embodiment;

[0018] Figure 2 is a cross-sectional view of the spinneret 2 in the embodiment;

[0019] Figure 3 is a cross-sectional view of the spinneret three in the embodiment;

[0020] Figure 4 Schematic diagram of the color body of the fiber in the embodiment Figure 1 ;

[0021] Figure 5 Schematic diagram of the color body of the fiber in the embodiment Figure 2 ;

[0022] Figure 6 is a schematic diagram of a shaping device in an embodiment;

[0023] Figure 7 is a cross-sectional view of the second guide wheel in the embodiment;

[0024] Figure 8 for Figure 6 The view of the mobile seat in the P direction;

[0025] Figure 9 A partial cross-sectional view of the guide wheel 3 in the embodiment;

[0026] Figure 10 It is a partial schematic diagram of a singlet in the embodiment.

[0027] Figure numerals: spinneret 1, spinneret hole 1 11, spinneret 2 2, spinneret hole 2 21, spinneret 3 3, spinneret hole 3 31, fiber 4, color body 1 41, color body 2 42, color body 3 43, color body 4 44, color body 5 45, wire pulley 1 5, wire pulley 2 51, ring groove 1 511, distribution hole 512, fixing column 52, ring groove 2 521, support plate 53, joint 54, channel 1 541, movable seat 6, wire pulley 3 61, ring groove 3 611, cover plate 62, channel 2 621, shaft 63, bearing 64, fixing block 65, channel 3 651, channel 4 652, limiting wheel 7, sensor 8, reel 81, single wire body 9, bending part 91. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1:

[0030] A production process for color-changing imitation linen silk, comprising the following production steps:

[0031] ①Prepare spandex yarn.

[0032] Spandex yarn is prepared by melt spinning. In the melt spinning preparation process, the seven temperature sections of the twin-screw extruder from the inlet end to the outlet end are: 145℃-165℃, 180℃-190℃, 188℃-200℃, 198℃-205℃, 185℃-194℃, 155℃-163℃, the side wind speed is 0.45m / s-0.5m / s, and the temperature is 15℃-16℃.

[0033] The cross section of spandex yarn is circular.

[0034] ②Prepare polyester imitation linen silk.

[0035] The polyester imitation linen yarn is prepared by a melt spinning process. During the melt spinning process, the screw temperature is controlled at 265°C-280°C, the side blowing temperature is controlled at 18°C-22°C, the side blowing speed is 0.35m / s-0.45m / s, the spinning speed is 25000m / min-2850m / min, and the MOY elongation is 146%-175%.

[0036] The cross section of the polyester imitation linen yarn is a regular hexagon, a diamond or a four-leaf clover.

[0037] ③ The spandex yarn in step ① and the polyester imitation linen yarn in step ② are combined to form fiber 4. During the forming process, a speed difference is formed between GR1 and GR2, so that multiple nodes are formed in the length direction of the composite fiber 4. In the initial state, different nodes display different colors. Figure 4 As shown, in the initial state, the color bodies displayed by different nodes include color body one 41, color body two 42, color body three 43, and color body four 44.

[0038] Spandex yarn and polyester imitation linen yarn are compounded through a texturing process. The texturing process is as follows: the deformation temperature of the first hot box is 200℃-210℃, the setting temperature of the second hot box is 160℃-165℃, the texturing draft ratio (DR) is 0.75-0.8, the machine speed is 380m / min-400m / min, and the network pressure is 0.20MPa-0.22MPa.

[0039] It is made of special-shaped polyester imitation linen yarn and round spandex yarn.

[0040] ④ Stretch the fiber 4 to increase the number of nodes with color display, and the color displayed by the nodes is different from the color displayed by the nodes in step ③.

[0041] Specifically, if Figure 5 As shown, the color bodies displayed by the nodes include color body 1 41, color body 2 42, color body 3 43, color body 44, and color body 5 45. Compared with step ③, color body 5 45 is an added color. Its forming principle is that after stretching, the small and thick nodes originally squeezed and covered are exposed to the field of vision again, increasing the color display, thereby showing different color changes.

[0042] Example 2:

[0043] ①Prepare spandex yarn.

[0044] The spandex yarn is prepared by melt spinning. In the melt spinning preparation process, the seven temperature sections of the twin-screw extruder from the inlet end to the outlet end are: 150°C, 180°C, 190°C, 200°C, 190°C, 180°C, and 160°C, the side blowing speed is 0.5m / s, and the temperature is 15°C.

[0045] The cross section of spandex yarn is circular. Figure 1 As shown, spandex yarns are ejected from a spinneret hole 11 of a spinneret 1, and the sizes (diameters) of the spinneret hole 11 are arranged in sequence from 0.10 mm, 0.14 mm, 0.16 mm, 0.18 mm, and 0.20 mm to eject spandex yarns of different thicknesses.

[0046] ②Prepare polyester imitation linen silk.

[0047] The polyester imitation linen yarn is prepared by a melt spinning process. In the melt spinning process, the screw temperature is controlled at 275°C, the side blowing temperature is controlled at 20°C, the side blowing speed is 0.4m / s, the spinning speed is 2800m / min, and the MOY elongation is 150%.

[0048] The cross section of polyester imitation linen is a regular hexagon. Figure 2 As shown, the polyester imitation linen yarn is ejected from the second spinneret hole 21 of the second spinneret plate 2. The sizes (distance from the margins) of the second spinneret hole 21 are arranged in sequence from 0.22mm, 0.25mm, 0.28mm, 0.31mm, and 0.33mm, and polyester imitation linen yarns of different thicknesses are ejected.

[0049] ③ The spandex yarn in step ① and the polyester imitation linen yarn in step ② are combined to form fiber 4. During the forming process, a speed difference is formed between GR1 and GR2, so that multiple nodes are formed in the length direction of the composite fiber 4. In the initial state, different nodes display different colors. Figure 4 As shown, in the initial state, the color bodies displayed by different nodes include color body one 41, color body two 42, color body three 43, and color body four 44.

[0050] Spandex yarn and polyester imitation linen yarn are compounded through a texturing process. The texturing process is as follows: the deformation temperature of the first hot box is 200℃, the setting temperature of the second hot box is 160℃, the texturing draft ratio (DR) is 0.75, the machine speed is 380m / min, and the network pressure is controlled at 0.20MPa.

[0051] ④ Stretch the fiber 4 to increase the color nodes, and the color displayed is different from the color displayed by the nodes in step ③. Specifically, Figure 5As shown, the color bodies displayed by the node include color body one 41, color body two 42, color body three 43, color body four 44, and color body five 45.

[0052] Example 3:

[0053] ①Prepare spandex yarn.

[0054] The spandex yarn is prepared by melt spinning. In the melt spinning preparation process, the seven temperature sections of the twin-screw extruder from the inlet end to the outlet end are: 160°C, 190°C, 200°C, 205°C, 190°C, and 160°C, the side blowing speed is 0.45m / s, and the temperature is 16°C.

[0055] The cross section of spandex yarn is circular. Figure 1 As shown, spandex yarns are ejected from a spinneret hole 11 of a spinneret 1, and the sizes (diameters) of the spinneret hole 11 are arranged in sequence from 0.11 mm, 0.15 mm, 0.17 mm, and 0.19 mm to eject spandex yarns of different thicknesses.

[0056] ②Prepare polyester imitation linen silk.

[0057] The polyester imitation linen yarn is prepared by a melt spinning process. During the melt spinning process, the screw temperature is controlled at 277° C., the side blowing temperature is controlled at 22° C., the side blowing speed is 0.35 m / s, the spinning speed is 2500 m / min, and the MOY elongation is 170%.

[0058] like Figure 3 As shown in the figure, the cross section of polyester imitation linen is diamond-shaped. Figure 2 As shown, the polyester imitation linen yarn is ejected from the spinneret three 31 of the spinneret three, and the sizes of the spinneret three 31 (long diagonal distance) are arranged in sequence from 0.21mm, 0.23mm, 0.26mm, 0.29mm, and 0.32mm, ejecting polyester imitation linen yarn of different thicknesses.

[0059] ③ The spandex yarn in step ① and the polyester imitation linen yarn in step ② are combined to form fiber 4. During the forming process, a speed difference is formed between GR1 and GR2, so that multiple nodes are formed in the length direction of the composite fiber 4. In the initial state, different nodes display different colors. Figure 4 As shown, in the initial state, the color bodies displayed by different nodes include color body one 41, color body two 42, color body three 43, and color body four 44.

[0060] Spandex yarn and polyester imitation linen yarn are compounded through a texturing process. The texturing process is as follows: the deformation temperature of the first hot box is 210℃, the setting temperature of the second hot box is 163℃, the texturing draft ratio (DR) is 0.78, the machine speed is 395m / min, and the network pressure is controlled at 0.22MPa.

[0061] ④ Stretch the fiber 4 to increase the color nodes, and the color displayed is different from the color displayed by the nodes in step ③. Specifically, Figure 5 As shown, the color bodies displayed by the node include color body one 41, color body two 42, color body three 43, color body four 44, and color body five 45.

[0062] Example 3:

[0063] like Figure 6 As shown, the production process of the color-changing imitation linen yarn includes a shaping device, including a shaping device for shaping the spandex yarn and the polyester imitation linen yarn into a single thread body 9 formed by spraying through a spinneret.

[0064] The shaping equipment includes a first guide pulley 5, a second guide pulley 51, and a reel 81. The first guide pulleys 5 are positioned opposite each other, with the second guide pulley 51 positioned below the first guide pulley 5 and between the two first guide pulleys 5. After being ejected, the single wire 9 passes over the top of the first guide pulley 5, the bottom of the second guide pulley 51, the top of the other first guide pulley 5, and is finally reeled by the reel 81. The tops of the two first guide pulleys 5 are at the same height.

[0065] The shaping device further comprises a moving seat 6 and a limiting wheel 7. A plurality of moving seats 6 are provided along the transmission direction of the single line body 9. Specifically, 10 to 15 moving seats 6 are provided along the transmission direction of the single line body 9. Figure 6 It is an abbreviated drawing method.

[0066] like Figure 8 As shown, the movable seat 6 is equipped with two guide pulleys 3 61. The two guide pulleys 3 61 and the limiting wheel 7 are respectively located on both sides of the transmission direction of the single-line body 9. The limiting wheel 7 is located between the two guide pulleys 3 61. The movable seat 6 is driven by the cylinder to move so that the guide pulley 3 61 can move toward the side close to the single-line body 9. Since the limiting wheel 7 remains fixed, the guide pulley 3 61 and the limiting wheel 7 respectively abut the single-line body 9 and form a curved portion 91 ( Figure 10 When the single-line body 9 is compounded, it is stretched. The setting of the curved portion 91 makes the single-line body 9 form a rebound tendency in the longitudinal direction. The compound bonding between the single-line bodies 9 is tighter, forming a better color mixing effect. After the fabric is formed, it has a stronger fluffiness and forms a high elasticity and high comfort effect.

[0067] Figure 5It is a cross-sectional view of the wire pulley 2 51. The wire pulley 2 51 is inserted and fixed with a fixing column 52. The fixing column 52 is installed with support plates 53 at both axial ends. The support plates 53 are fixedly installed. The wire pulley 2 51 is provided with a distribution hole 512. The distribution hole 512 is arranged radially along the wire pulley 2 51. There are multiple distribution holes 512 circumferentially along the wire pulley 2 51. The wire pulley 2 51 is provided with an annular groove 1 511. The annular groove 1 511 is recessed radially inwardly along the outer peripheral wall of the wire pulley 2 51 and extends to form an annular groove structure. The annular groove 1 511 is connected to one axial end of the distribution hole 512. The fixing column 52 is provided with an annular groove 2 521. The annular groove 2 521 is recessed radially inwardly along the outer peripheral wall of the fixing column 52 and extends to form an annular groove structure. The annular groove 2 521 is connected to the end of the distribution hole 512 away from the annular groove 1 511. Combined Figure 6 、 Figure 7 The second wire wheel 51 is equipped with a connector 54, and the connector 54 is provided with a channel 1 541. The distribution hole 512 at the top is connected to the channel 1 541. The channel 1 541 is externally connected to a negative pressure device to prevent the single wire body 9 from bypassing the bottom of the second wire wheel 51 and detaching.

[0068] like Figure 8 、 Figure 9 As shown, a bearing 64 is installed on the inner wall of the guide wheel 3 61 , and a shaft 63 is installed on the inner wall of the bearing 64 , and both ends of the shaft 63 are fixed by brackets.

[0069] The guide wheel three 61 is provided with an annular groove three 611, which is radially inwardly recessed along the outer wall of the guide wheel three 61 to form an annular groove structure. The annular groove three 611 is inserted with a cover plate 62, and an air flow channel is formed between the cover plate 62 and the annular groove three 611. The cover plate 62 is arc-shaped, and the cover plate 62 partially closes the annular groove three 611. The bottom of the annular groove three 611 is open so that the single wire body 9 can abut the inner wall surface of the annular groove three 611.

[0070] like Figure 8 As shown, the cover plate 62 is provided with a second hole 621, which is connected to the third annular groove 611. The cover plate 62 is mounted with a fixing block 65, which is provided with a third hole 651. The third hole 651 is connected to an external negative pressure device. The third hole 651 is connected to the fourth hole 652, which is in communication with the second hole 621. The negative pressure causes the singlet 9 to be adsorbed on the inner wall of the third annular groove 611.

[0071] Since the single wire body 9 is continuously ejected, when the wire wheel 3 61 and the limiting wheel 7 respectively abut the single wire body 9 and form the bending portion 91, the winding wheel 81 stops winding the wire, and the wire wheel 3 61 and the limiting wheel 7 away from the side of the wire wheel 1 5 work first, and then the wire wheel 3 61 and the limiting wheel 7 close to the side of the wire wheel 1 5 work in sequence to convert the length of the ejected single wire body 9 into the length generated by the bending portion 91, so as to work continuously.

[0072] At the same time, it also includes a sensor 8, which is pressed vertically into the transmission direction of the single-line body 9 at the contact detection position to detect the tension of the single-line body 9 to better control the transmission speed of the single-line body 9.

[0073] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A production process for color-changing imitation linen silk, characterized in that: The production steps include: ①Preparation of spandex yarn; ② Preparation of polyester imitation linen silk; ③ The spandex yarn in step ① and the polyester imitation linen yarn in step ② are composited to form a fiber (4), and a speed difference is formed between GR1 and GR2 during the molding process, so that a plurality of nodes are formed in the length direction of the composite fiber (4), and in an initial state, different nodes display different colors; ④ stretching the fiber (4) to increase colored nodes, and the displayed color is different from the node display color in step ③.

2. The production process of a color-changing imitation linen silk according to claim 1, characterized in that: The spandex yarn is prepared by melt spinning. In the melt spinning preparation process, the seven temperature sections of the twin-screw extruder from the inlet end to the outlet end are: 145°C-165°C, 180°C-190°C, 188°C-200°C, 198°C-205°C, 185°C-194°C, and 155°C-163°C, the side blowing wind speed is 0.45m / s-0.5m / s, and the temperature is 15°C-16°C.

3. The production process of a color-changing imitation linen silk according to claim 1, characterized in that: The cross section of the spandex yarn is circular.

4. The production process of the color-changing imitation linen silk according to claim 1, characterized in that: The polyester imitation linen yarn is prepared by a melt spinning process. In the melt spinning process, the screw temperature is controlled at 265° C.-280° C., the side blowing temperature is controlled at 18° C.-22° C., the side blowing speed is 0.35 m / s-0.45 m / s, the spinning speed is 25000 m / min-2850 m / min, and the MOY elongation is 146%-175%.

5. The production process of the color-changing imitation linen silk according to claim 1, characterized in that: The cross section of the polyester imitation linen yarn is a regular hexagon, a rhombus or a four-leaf clover.

6. The production process of color-changing imitation linen silk according to claim 5, characterized in that: The spandex yarn and the polyester imitation linen yarn are compounded through a texturing process, wherein the texturing process is as follows: the deformation temperature of the first hot box is 200°C-210°C, the setting temperature of the second hot box is 160°C-165°C, the texturing draft ratio (DR) is 0.75-0.8, the vehicle speed is 380m / min-400m / min, and the network pressure is 0.20MPa-0.22MPa.

7. The production process of color-changing imitation linen silk according to claim 1, characterized in that: In the initial state, the color bodies displayed by different nodes include color body one (41), color body two (42), color body three (43), and color body four (44).

8. The production process of color-changing imitation linen silk according to claim 1, characterized in that: The color bodies displayed by the node in step ④ include color body one (41), color body two (42), color body three (43), color body four (44), and color body five (45).

9. The production process of color-changing imitation linen silk according to claim 1, characterized in that: The invention comprises a shaping device, wherein the shaping device is used for shaping the single-line body (9) formed by the spandex yarn and the polyester imitation linen yarn being ejected through a spinneret, and the shaping device comprises a movable seat (6), a limiting wheel (7), and a reel (81). The movable seat (6) is provided with two guide wheels (61), the two guide wheels (61) and the limiting wheel (7) are respectively located on both sides of the transmission direction of the single-line body (9), the limiting wheel (7) is located between the two guide wheels (61), and the guide wheel (61) can be moved toward the side close to the single-line body (9) so that the guide wheel (61) and the limiting wheel (7) respectively abut against the single-line body (9) and form a curved portion (91).

10. The production process of color-changing imitation linen silk according to claim 1, characterized in that: A plurality of movable seats (6) are provided along the transmission direction of the single-line body (9).

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