Rabbit hair fiber fabric based on electrostatic flocking and preparation method and preparation device thereof

Abstract

The application discloses a rabbit hair fiber fabric based on electrostatic flocking and a preparation method and a preparation device thereof. The rabbit hair fiber fabric based on electrostatic flocking comprises a base material, a glue layer and a rabbit hair fiber layer, and the rabbit hair fiber layer is fixed on the glue layer on the surface of the base material by using an electrostatic flocking method. Firstly, rabbit hair fibers are sized and dried, then rabbit hair slivers obtained are thickened and twisted to increase the cohesion strength between the rabbit hair fibers, then cutting is performed to cut the rabbit hair slivers with a length of 30mm-120mm into rabbit hair short fibers with a length of 0.2mm-10mm; an adhesive is coated on the surface of the base material to form the glue layer, and the rabbit hair short fibers are fixed on the glue layer in a uniform and upright manner by electrostatic flocking. The fabric has the advantages of light weight, loftiness, moisture absorption, warmth retention, smooth surface, soft hand feeling and the like, the process is simple, the device has a high degree of integration, and is suitable for industrialized popularization and application.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of rabbit hair fabric processing, and particularly relates to a rabbit hair fiber fabric based on electrostatic flocking and a preparation method and a preparation device thereof. BACKGROUND

[0002] Rabbit fur, also known as rabbit thread, is made of very fine fur from the root of rabbit hair. Rabbit fur thread has fine fibers, strong fur feeling, neat and clean scale, softness, and silky glutinousness. In addition, rabbit fur fiber has a porous structure of medullary cavity layer, so that the warmth retention is 2 times that of wool thread, and the moisture absorption and air permeability are also better than those of other natural fiber threads.

[0003] Rabbit hair fiber has the characteristics of lightness, smoothness, poor cohesion, high static electricity and low strength, which brings certain difficulties to rabbit hair processing. Rabbit hair products on the market are mainly blended or high-proportion low-count coarse spinning. Rabbit hair fiber is not easy to form a bar, and the cohesion of the sliver is poor and cannot be pulled, which is the main factor restricting the production of pure rabbit hair or high-proportion rabbit hair high-count yarn.

[0004] The following are some existing processing technologies for rabbit hair fiber

[0005] The invention patent with the application number 2022115936220 discloses a pure rabbit hair cloth processing technology, which includes (1) raw material sorting, selecting out the tail hair, different color hair and impurities in the rabbit hair, and grading the length; (2) adding water for humidification, and opening the hair after more than 24 hours of humidification; (3) carding the material obtained in the previous step, and removing coarse hair and short hair through a combined carding machine; (4) adding water and oil to the material obtained in the previous step, and performing fur combining after 24 hours of standing; (5) spinning the material obtained in the previous step, and the spinning temperature is 26-29℃; (6) weaving the material obtained in the previous step; (7) post-finishing the material obtained in the previous step; (8) inspecting the cloth. The invention adopts a unique post-finishing process, strengthens the post-treatment of pure rabbit hair fabric, makes the structure of the pure rabbit hair fabric become solid and durable, and does not shed, so that the pure rabbit hair fabric does not shed and has a delicate hand feeling.

[0006] The application number 202010340893.X discloses a kind of graphene modified rabbit hair fiber preparation system and method, including solution preparation and rabbit hair pretreatment, the solution preparation mainly is preparation L-cysteine and graphene oxide mixed solution, the rabbit hair pretreatment is to carry out multiple processing to rabbit hair.It relates to the technical field of rabbit hair fiber preparation.By using the system of the application, a new type of graphene modified rabbit hair fiber can be produced, in which the unique properties of graphene are utilized to effectively improve the performance of rabbit hair fiber.The system is relatively simple to operate, with clear and complete steps, greatly reducing the difficulty of spinning pure rabbit hair fiber without the need for introducing or improving wool combing equipment, ordinary wool spinning instruments can be used, solving the problem of difficult web formation during spinning, and the graphene modified rabbit hair fiber not only has the excellent properties of rabbit hair fiber, but also has antibacterial, antifungal, ultraviolet protection, far infrared health care and other functional properties.

[0007] The application number 202010248311.5 discloses a method for increasing the curl of rabbit hair fiber, comprising the following steps: 1) swelling treatment of rabbit hair fiber with hot water to open the disulfide bond inside the fiber and increase the voids within the fiber; 2) freeze-drying of the swollen rabbit hair fiber to preserve the voids; 3) immersion of the freeze-dried rabbit hair fiber in an ionic liquid of a certain concentration and ultrasonic treatment; 4) washing and drying of the treated rabbit hair fiber to obtain curled rabbit hair fiber. The method of the application can increase the permanent curl of rabbit hair fiber, improve its spinnability, and has good anti-shedding properties. The fiber has increased voids, which can increase its moisture absorption and release properties, while maintaining its hand feel, luster and strength.

[0008] The application number CN201510357247.3 provides a processing method for rabbit hair fiber, which comprises the following steps: multiple rabbit hair fibers are combined, drawn, and combed on a gill box to obtain a rabbit hair sliver with straight fibers; after oxidation treatment, enzyme treatment, and reduction treatment, dyeing treatment is performed; finally, twisting and steam permanent setting are performed to process the rabbit hair fiber, making it have bright color and clear texture, soft hand feel, good elasticity, and no shedding, and it can be machine washed. The method has cleaning and flattening effects on rabbit hair fiber, reduces the entanglement of rabbit hair fiber in spinning, has excellent durability, and does not fade or change color in long-term use.

[0009] The application No. CN201510361750.6 provides a kind of rabbit hair fiber processing method, after oxidation treatment, enzyme treatment, reduction treatment, carry out dyeing treatment, rabbit hair fiber is processed, make rabbit hair fiber, color and luster bright, grain clear, soft, good elasticity, no hair loss, can machine wash, have cleaning and flat effect to rabbit hair fiber, reduce the entanglement of rabbit hair fiber in textile, with superior durability, not fade in long-term use.

[0010] Static flocking is to place treated short fiber (0.2mm-10mm) in high-voltage electrostatic field. Under the action of electrostatic field, charged flock will polarize and charge, and then rotate, vibrate, translate and other complex movements to make upright directional movement. With the action of electric field force, charged flock is quickly implanted into the base material (such as base cloth) coated with adhesive, and short pile is evenly and uprightly distributed on the surface of the base material to form a unique style appearance. Then, through high-temperature baking and post-treatment, static flocking products with noble and fashionable appearance, soft luster, soft hand feeling and strong three-dimensional effect are obtained. At this time, the products have certain wear resistance and can be applied. Currently used flock is mainly nylon, polyester and spandex, and the fabric is difficult to be used as high-grade fabric.

[0011] As shown in Figure 1 In the traditional static flocking process, first, fiber strip 1 (long fiber) is sent to traction roller 4 by feeding roller 2 intermittently. Under the traction and holding of feeding roller 2 and traction roller 4, cutting knife 3 cuts the fiber to obtain short fiber 5. The short fiber is sent to the static flocking equipment through the conveying device and is bonded to the base material coated with adhesive on the surface. Currently, the cutting equipment for flocking pile is mainly for chemical fiber (nylon, polyester, viscose, etc.). The chemical fiber has high neatness, large friction coefficient and strong cohesion, so it is easy to cut. Rabbit hair fiber has inconsistent length and weak cohesion, so it is difficult to control cutting. The present application improves the existing long chemical fiber static flocking process and develops a static flocking method and equipment suitable for rabbit hair fiber. SUMMARY

[0012] The present application aims to overcome the shortcomings of the prior art. The present application seeks to design a rabbit hair fiber fabric based on static flocking and its preparation method and device. The rabbit hair fiber is combined with static flocking technology to develop a new high-grade rabbit hair flocking fabric, which completely solves the problem of hair loss of ordinary rabbit hair fabric. At the same time, the selection of base cloth solves the problem of shrinkage and controls the length of fiber pile to reduce pilling. Finally, the industrial production of high-grade rabbit hair fabric without hair loss, shrinkage and pilling is realized, and the development and production of follow-up products are carried out.

[0013] The independent research and development of the present application improves the rabbit hair strip quantification by 2-3 times the original quantification, adopts a rabbit hair strip pre-twist device and technology, increases the cohesion of rabbit hair fibers, and can effectively cut the fibers to 0.2mm-10mm.

[0014] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0015] A rabbit hair fiber fabric based on electrostatic flocking, comprising a base material, an adhesive layer and a rabbit hair fiber layer, the rabbit hair fiber layer is fixed on the adhesive layer on the surface of the base material by electrostatic flocking method.

[0016] The thickness of the adhesive layer is not more than 1 / 5 of the length of the rabbit hair fiber layer, and the length of the rabbit hair fiber layer is 0.2mm-10mm, which can effectively avoid the pilling problem caused by too long.

[0017] Specifically, the base material is a woven fabric, a knitted fabric, a non-woven fabric, a silk fabric or a functional fabric.

[0018] A preparation method of a rabbit hair fiber fabric based on electrostatic flocking, specifically comprising the following steps:

[0019] (1) Sizing and drying the rabbit hair fibers, then thickening and twisting the obtained rabbit hair strips to increase the cohesion strength between the rabbit hair fibers, facilitating subsequent effective cutting;

[0020] (2) cutting the rabbit hair strips obtained in step (1) by using a cutting unit, and cutting the rabbit hair strips with a length of 30mm-120mm into rabbit hair short fibers with a length of 0.2mm-10mm;

[0021] (3) coating an adhesive on the surface of the base material to form an adhesive layer, and fixing the rabbit hair short fibers obtained in step (2) on the adhesive layer by electrostatic flocking;

[0022] A preparation device of a rabbit hair fiber fabric based on electrostatic flocking, comprising a sizing unit, a thickening unit, a twisting unit, a cutting unit, an electrostatic flocking unit and a base material conveying unit; the sizing unit is used for sizing the rabbit hair fibers; the thickening unit is used for combining the rabbit hair fibers to form rabbit hair strips; the twisting unit is used for twisting the rabbit hair strips; the cutting unit is used for cutting the twisted rabbit hair strips into rabbit hair short fibers with a desired length; the electrostatic flocking unit is used for implanting the rabbit hair short fibers into the base material coated with an adhesive.

[0023] Specifically, the sizing unit comprises a conveying curtain, a sizing spray bucket and an oven, the oven is installed on one side of the conveying curtain, the conveying curtain is used for transporting the rabbit hair fibers to the oven, the sizing spray bucket is installed above the conveying curtain with nozzles aligned with the conveying curtain, and is used for spraying sizing solution on the rabbit hair fibers on the conveying belt.

[0024] Specifically, the thickening unit comprises a thickening back roller and a thickening front roller, the thickening back roller is arranged near the outlet of the oven, and the thickening front roller is arranged in front of the thickening back roller.

[0025] Specifically, the twisting unit is a hollow tube type pre-twister.

[0026] Specifically, the cutting unit comprises a horizontal feeding curtain, a holding roller, an upper guide plate, a lower guide plate, a cutter and a sliver gap, the horizontal feeding curtain is arranged in front of the twisting unit, the horizontal feeding curtain is used for feeding the twisted rabbit hair sliver into the holding roller, the holding roller is arranged in front of the horizontal feeding curtain, the upper guide plate and the lower guide plate are arranged on an inclined surface at a certain angle with the input direction of the rabbit hair sliver, there is a sliver gap between the upper guide plate and the lower guide plate, the sliver gap is opposite to the fiber outlet of the holding roller, the cutter is installed on the side of the upper guide plate away from the holding roller, and the cutter cuts the rabbit hair sliver out of the sliver gap by moving up and down along the inclined surface.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] (1) The fabric has the advantages of light weight, loftiness, moisture absorption, warmth retention, smooth surface, soft hand feeling and the like, and various functions such as antibacterial and bacteriostatic, flame retardant, warmth retention and the like can be given by selecting functional base materials, and in addition, because it is pure rabbit hair or high proportion of rabbit hair, the self-antibacterial function, self-cleaning function and the like of rabbit hair fiber are highlighted;

[0029] (2) By pre-twisting the sliver, the cohesion between fibers is improved, the fiber holding effect is improved, the fiber uniformity is improved, and the quality of the cut fiber is improved;

[0030] (3) The inclined cutting process is adopted, the excessive generation of overlong fibers is avoided, the fiber cutting speed is improved, and the yield is improved;

[0031] (4) The process is simple, the device is highly integrated, and is suitable for industrialized popularization and application. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural principle schematic diagram of a fiber cutting machine in a traditional electrostatic flocking process.

[0033] Figure 2 It is a structural principle schematic diagram of an electrostatic flocking unit involved in the present application.

[0034] Figure 3 It is a structural principle schematic diagram of a preparation device of rabbit hair fiber fabric based on electrostatic flocking involved in the present application. DETAILED DESCRIPTION

[0035] The present application will be further described below through examples.

[0036] Embodiment 1

[0037] A rabbit hair fiber fabric based on electrostatic flocking, comprising a base material, a glue layer and a rabbit hair fiber layer, the rabbit hair fiber layer being fixed on the glue layer on the surface of the base material by electrostatic flocking. The thickness of the glue layer is not more than 1 / 5 of the length of the rabbit hair fiber layer.

[0038] Specifically, the base material is a woven fabric, a knitted fabric, a non-woven fabric, a silk fabric, a functional fabric (such as moisture absorption, antibacterial, antibacterial, flame retardant, thermal insulation), etc. Compared with traditional chemical fiber flocking, the fabric range is widened and the product variety is increased. In addition, the use of non-shrinking substrate ensures that the rabbit hair fiber fabric does not shrink. The length of the rabbit hair fiber layer is 0.2mm-10mm, which can effectively avoid the pilling problem caused by too long.

[0039] A preparation method of a rabbit hair fiber fabric based on electrostatic flocking, specifically comprising the following steps:

[0040] (1) Sizing and drying the rabbit hair fiber, then thickening and twisting the obtained rabbit hair top to increase the cohesion strength between the rabbit hair fibers, facilitating subsequent effective cutting;

[0041] (2) cutting the rabbit hair top obtained in step (1) to cut the rabbit hair top with a length of 30mm-120mm into rabbit hair short fibers with a length of 0.2mm-10mm;

[0042] (3) applying an adhesive to the surface of the base material to form a glue layer, the application thickness of the adhesive is adjusted according to different products, and is strictly controlled to be not more than 1 / 5 of the length of the pile, and the rabbit hair short fibers obtained in step (2) are uniformly and uprightly fixed on the glue layer by electrostatic flocking;

[0043] A preparation device of a rabbit hair fiber fabric based on electrostatic flocking, comprising a sizing unit 100, a thickening unit 200, a twisting unit 300, a cutting unit 400, an electrostatic flocking unit 500 and a substrate conveying unit 600; the sizing unit 100 is used for sizing the rabbit hair fiber; the thickening unit 200 is used for combining the rabbit hair fibers to form a rabbit hair top; the twisting unit 300 is used for twisting the rabbit hair top; the cutting unit 400 is used for uniformly cutting the twisted rabbit hair top into rabbit hair short fibers with a desired length; the electrostatic flocking unit 500 is used for implanting the rabbit hair short fibers into the base material coated with an adhesive.

[0044] Specifically, the sizing unit 100 comprises a conveying curtain 101, a sizing spray bucket 102 and an oven 103, the oven 103 is installed on one side of the conveying curtain 101, the conveying curtain 101 is used for transporting rabbit hair fibers to the oven 103, the sizing spray bucket 102 is installed above the conveying curtain 101 and the spray nozzle is aligned with the conveying curtain 101, and the sizing spray bucket 102 is used for spraying sizing solution to the rabbit hair fibers on the conveying belt.

[0045] Specifically, the thickening unit 200 comprises a thickening rear roller 201 and a thickening front roller 202, the thickening rear roller 201 is arranged near the outlet of the oven 103, and the thickening front roller 202 is arranged on the front side of the thickening rear roller 201.

[0046] Specifically, the twisting unit 300 is a hollow tube type pre-twisting device, and can also be other twisting units.

[0047] Specifically, the cutting unit 400 comprises a horizontal feeding curtain 401, a holding roller 402, an upper guide plate 403, a lower guide plate 404, a cutter 405 and a sliver gap 406, the horizontal feeding curtain 401 is arranged on the front side of the twisting unit 300, the horizontal feeding curtain 401 is used for feeding the twisted rabbit sliver into the holding roller 402, the holding roller 402 is arranged on the front side of the horizontal feeding curtain 401, the upper guide plate 403 and the lower guide plate 404 are arranged on an inclined surface at an angle to the input direction of the rabbit sliver, there is a sliver gap between the upper guide plate 403 and the lower guide plate 404, the sliver gap is opposite to the fiber outlet of the holding roller, the cutter 405 is installed on the side of the upper guide plate 403 away from the holding roller 402, and the cutter 405 moves up and down along the inclined surface to cut the rabbit sliver from the sliver gap.

[0048] The guide plate and the cutter of the cutting unit 400 are both installed obliquely, so that the fibers can be effectively controlled and cut.

[0049] The electrostatic flocking unit 500 adopts a downward flocking processing technology. After the rabbit hair enters the electric field, the rabbit hair is close to the negative electrode and carries a negative charge. Under the action of the electric field force, the rabbit hair is vertically implanted into the base material at a high speed along the electric field line.

[0050] The embodiment relates to a use method of a rabbit hair fiber fabric preparation device based on electrostatic flocking.

[0051] (1) The conveying curtain 101 conveys the rabbit hair fibers to the bottom of the sizing spray barrel 102, the nozzles uniformly spray the sizing agent 701 on the surface of the rabbit hair fibers, then enter the oven 103 for drying, and the rabbit hair top 702 is output after drying, the top is thickened by two to three times after the thickening roller 201 and the pre-thickening roller 202, the surface speed of the post-thickening roller 201 is higher than that of the pre-thickening roller 202, then the top 704 is twisted by the hollow tube type pre-twisting device 300, the tightness of the top is increased, the cohesion between the fibers is increased, the length of the top is 30-120 mm, the top is fed into the horizontal feeding curtain 401 by the cutting unit, the top is stretched out of the top gap 406 under the traction and holding of the holding roller 402, the cutter 405 moves up and down along the inclined surface, the top is cut, and the rabbit hair short fibers 705 with a length of 0.2-10 mm are obtained.

[0052] (2) The adhesive is coated on the surface of the base material, and then conveyed to the electrostatic flocking unit 500, the rabbit hair short fibers obtained in step (2) are also conveyed to the electrostatic flocking unit 500, under the action of the electrostatic field, the rabbit hair short fibers are polarized and charged to produce standing and directional motion, and are implanted into the base material coated with the adhesive by the action of the electric field force, the rabbit hair short fibers are uniformly and vertically distributed on the surface of the base material, and finally the rabbit hair fiber fabric is obtained through high-temperature baking and finishing.

Claims

1. A rabbit hair fiber fabric based on electrostatic flocking, characterized in that, It includes a base material, an adhesive layer, and a rabbit hair fiber layer. The rabbit hair fiber layer is fixed to the adhesive layer on the surface of the base material using an electrostatic flocking method. The method for preparing the rabbit hair fiber fabric based on electrostatic flocking specifically includes the following steps: (1) Sizing and drying the rabbit hair fibers, then thickening and twisting the resulting rabbit hair strips to increase the cohesion between the rabbit hair fibers and facilitate subsequent effective cutting; (2) The sliver obtained in step (1) is cut using a cutting unit to cut the rabbit hair sliver with a length of 30mm-120mm into short rabbit hair fibers with a length of 0.2mm-10mm; (3) Apply adhesive to the surface of the base material to form an adhesive layer, and fix the rabbit hair short fibers obtained in step (2) evenly and upright on the adhesive layer by electrostatic flocking.

2. The rabbit hair fiber fabric based on electrostatic flocking according to claim 1, characterized in that, The thickness of the adhesive layer does not exceed 1 / 5 of the length of the rabbit hair fiber layer, and the length of the rabbit hair fiber layer is 0.2mm-10mm.

3. The rabbit hair fiber fabric based on electrostatic flocking according to claim 1, characterized in that, The base material is a woven fabric, a knitted fabric, a nonwoven fabric, a silk fabric, or a functional fabric.

4. The apparatus for preparing rabbit hair fiber fabric based on electrostatic flocking as described in any one of claims 1-3, characterized in that, It includes a sizing unit, a thickening unit, a twisting unit, a cutting unit, an electrostatic flocking unit, and a substrate conveying unit; the sizing unit is used to sizing rabbit hair fibers; the thickening unit is used to combine rabbit hair fibers to form rabbit hair strips; the twisting unit is used to twist the rabbit hair strips; the cutting unit is used to uniformly cut the twisted rabbit hair strips into rabbit hair short fibers of the required length; and the electrostatic flocking unit is used to implant the rabbit hair short fibers into a substrate material coated with an adhesive.

5. The apparatus for preparing rabbit hair fiber fabric based on electrostatic flocking according to claim 4, characterized in that, The sizing unit includes a conveyor curtain, a sizing spray gun, and a drying oven. The drying oven is installed on one side of the conveyor curtain, which is used to transport rabbit hair fibers to the drying oven. The sizing spray gun is installed above the conveyor curtain with nozzles aligned with the conveyor curtain, and is used to spray sizing liquid onto the rabbit hair fibers on the conveyor belt.

6. The apparatus for preparing rabbit hair fiber fabric based on electrostatic flocking according to claim 5, characterized in that, The thickening unit includes a rear thickening roller and a front thickening roller. The rear thickening roller is located near the oven outlet, and the front thickening roller is located in front of the rear thickening roller.

7. The apparatus for preparing rabbit hair fiber fabric based on electrostatic flocking according to claim 6, characterized in that, The twisting unit is a hollow tube type pre-twisting device.

8. The apparatus for preparing rabbit hair fiber fabric based on electrostatic flocking according to claim 7, characterized in that, The cutting unit includes a horizontal feeding curtain, a holding roller, an upper guide plate, a lower guide plate, a cutter, and a sliver slit. The horizontal feeding curtain is located in front of the twisting unit and is used to feed the twisted rabbit hair sliver into the holding roller. The holding roller is located in front of the horizontal feeding curtain. The upper and lower guide plates are placed on an inclined plane at a certain angle to the direction of rabbit hair sliver input. There is a sliver slit between the upper and lower guide plates. The sliver slit is opposite to the fiber outlet of the holding roller. The cutter is installed on the side of the upper guide plate away from the holding roller and moves up and down along the inclined plane to cut the rabbit hair sliver extending from the sliver slit.

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