Process for producing a single-layer nonwoven fabric having strip-shaped fibers

Abstract

A single-layer non-woven fabric production process with strip-shaped fibers, which comprises the following steps: step one, opening; step two, first carding; step three, second carding; step four, twisting; step five, bundling; step six, glue spraying; step seven, drying; and step eight, winding. The present application adopts eight steps to complete the production of non-woven fabric, which is different from the general spunlace non-woven fabric production process. The present application is simpler, uses smaller space, has lower equipment cost maintenance, and has smaller raw material loss in the processing process. Meanwhile, the present application uses the misty glue spraying mode to stick the strip-shaped fibers, so as to make the single-layer non-woven fabric with strip-shaped fibers light and comfortable, the strip-shaped fibers inside can promote the absorption of liquid, and the liquid storage capacity is stronger, which meets the needs of users for strong absorption capacity and light and comfortable, and brings better experience to users.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of textile machinery, and particularly relates to a single-layer non-woven fabric production process with strip-shaped fibers. BACKGROUND

[0002] Non-woven fabric, also known as non-woven fabric, needle-punched cotton, needle-punched non-woven fabric, etc., is produced by using polyester fiber and polyester fiber material through needle-punching process, and can be made into different thickness, hand feeling, hardness, etc. Non-woven fabric has the characteristics of moisture-proof, breathable, flexible, light, flame-retardant, non-toxic and odorless, low price, recyclable, etc. It can be used in different industries, such as sound insulation, heat insulation, heating sheet, mask, clothing, medical, filling material, etc.

[0003] For example, a production process for artemisia fiber spunlace non-woven fabric (publication number: CN114232214A, publication date: March 25, 2022) provides a production process for artemisia fiber spunlace non-woven fabric that can obtain uniform tensile strength of cloth surface, high thickness, softness and high production efficiency, which includes the following steps in turn: opening and mixing, carding, cross-laying, forward stretching, pretreatment, water jet and setting drying; wherein the cross-laying environment temperature is 30~35℃, and the humidity is 55%~65%; the pretreatment step is negative pressure suction.

[0004] The present application significantly improves the production efficiency of artemisia fiber spunlace non-woven fabric, and the artemisia fiber web is stable in production process, uniform in each direction, and high in thickness, but the present application uses the water jet method to make non-woven fabric, the processing process is more complex, the equipment maintenance cost is higher, and the process is more complex, and the non-woven fabric made by the present application has poor water absorption and water storage function. SUMMARY

[0005] In view of the technical defects in the background art, the present application provides a single-layer non-woven fabric production process with strip-shaped fibers, which solves the above technical problems and meets the actual needs. The specific technical solution is as follows:

[0006] A single-layer non-woven fabric production process with strip-shaped fibers, the steps are as follows:

[0007] Step 1: opening, the raw material is put into the opening machine, the opening machine makes the large tangled fibers into small pieces or bundles by tearing, and at the same time, the mixing and impurity removal functions are realized during the opening process. In the initial stage of opening, larger impurities and less adherent impurities in the raw material are easy to separate, and with further opening, part of the small impurities are removed;

[0008] Step two: first carding, the fiber opened in step one is fed into the first carding machine for processing, the first carding machine makes the fiber bundle obtain preliminary decomposition, carries out the first carding, and plays the effect of removing impurities and short fibers, the purpose of the first carding machine is to make the fiber bundle be fully opened and mixed, so as to prepare for the second carding in step three;

[0009] Step three: second carding, the carded fiber in step two is fed into the second carding machine for processing, the fiber is repeatedly carded and stripped in the second carding machine, the fiber bundle is gradually decomposed into strip single fibers, forms a net-like fiber thin layer, and is then collected into a fiber strip, many impurities and defects have been removed after carding, different quality and color fibers are fully mixed, the fibers are preliminarily straightened and have directionality;

[0010] Step four: twisting, the carded fiber strip in step three is put into the twisting machine for processing, the twisting machine twists two or more fiber strips with direction into a strip fiber, the guide of the twisting machine and the guide out have the function of pulling the yarn, which can ensure the consistency of twist and length and ensure the uniform transportation of the strip fiber to the bundling device in step five;

[0011] Step five: bundling, the twisted strip fiber in step four is put into the bundling device for processing, the bundling device includes a bundling inlet device, a bundler and a second motor, the strip fiber is transported into the bundler from the bundling inlet, and the bundler gathers the strip fiber to make each strip fiber closely fit and bundle into a layer;

[0012] Step six: glue spraying, the compressed strip fiber in step five is placed in the glue spraying machine for glue spraying, the glue spraying machine sprays the latex on the surface of the strip fiber in the form of water mist by using high-pressure gas, so that each strip fiber is tightly adhered together by the latex;

[0013] Step seven: drying, the strip fiber sprayed with the latex in step six is placed in the drying machine for drying, the drying machine sends heat into the box body through the hot air circulation system, and the latex on the surface of the strip fiber is solidified by heating to form a single-layer non-woven fabric;

[0014] Step eight: winding, the single-layer non-woven fabric completed in step seven is wound into a roll by the winding machine.

[0015] As a preferred technical scheme of the present application, the first carding machine in step two and the second carding machine in step three are both provided with two systems, each system is composed of a cylinder, a work roll and a stripping roll, a conveying roll is arranged between the two systems, the combination of the work roll and the stripping roll is provided with a plurality of groups, and the combination of the plurality of groups of work rolls and stripping rolls is arranged above the cylinder.

[0016] As a preferred technical scheme of the present application, the twisting machine of step four comprises a group of thread guides, a group of lead-out devices and two groups of twisting devices, the thread guides are arranged at the front ends of the two groups of twisting machines, the two groups of twisting devices are arranged behind the thread guides, and the lead-out devices are arranged behind the two groups of twisting devices.

[0017] As a preferred technical scheme of the present application, four guide wheels are arranged in each thread guide and each lead-out device, the twisting devices are connected by belts, and the two groups of twisting devices are connected with the first motor.

[0018] As a preferred technical scheme of the present application, the bundle inlet is provided with baffles on the left and right sides, the bundle inlet gradually decreases along the movement direction of the strip-shaped fibers, the bundle guide is arranged behind the bundle inlet, the rear end of the bundle guide is provided with an opening, and a pair of rollers are arranged behind the bundle guide.

[0019] As a preferred technical scheme of the present application, the bundle guide is provided with compression plates on the left and right sides, the compression plates are freely movable in the left-right direction, the top end of the bundle guide is provided with a limiting plate freely movable in the up-down direction, the compression plates and the bundle guide shell are provided with telescopic structures, the limiting plate and the bundle guide shell are provided with telescopic structures, and the telescopic structures are connected with the second motor.

[0020] As a preferred technical scheme of the present application, the glue spraying machine of step five comprises a support frame, a spraying head and a storage tank, the spraying head is connected with the storage tank through a pipeline, and the spraying head is movably arranged on the support frame in the left-right direction.

[0021] The present application has the beneficial effects that:

[0022] The present application adopts eight steps of opening, first carding, second carding, twisting, bundling, glue spraying, drying and winding to complete the production of the non-woven fabric, which is different from the general water-jet non-woven fabric production process, and the process of the present application is simpler, uses smaller space, has lower equipment cost maintenance and smaller raw material loss in the processing process.

[0023] Meanwhile, the strip-shaped fibers are adhered in the form of mist glue, so that a single-layer non-woven fabric with strip-shaped fibers is manufactured, the single-layer non-woven fabric manufactured by the present application is light and comfortable, the strip-shaped fibers inside can promote the absorption of liquid, and the storage capacity of liquid is stronger, which meets the needs of users for strong absorption capacity and light and comfortable, and brings better experience to the users. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a flow chart of the production process of the single-layer non-woven fabric with strip-shaped fibers.

[0025] Figure 2This is a process flow diagram for the production of a single-layer nonwoven fabric with strip-shaped fibers.

[0026] Figure 3 This is a diagram of a bundling device for a single-layer nonwoven fabric production process with strip-shaped fibers.

[0027] Figure 4 This is a half-sectional view of a bundling device for a single-layer nonwoven fabric production process with strip-shaped fibers.

[0028] Figure 5 This is a diagram of the internal structure of a twisting machine used in the production of single-layer nonwoven fabrics with strip-shaped fibers.

[0029] Figure 6 This is a product application diagram illustrating a production process for a single-layer nonwoven fabric with strip-shaped fibers.

[0030] Figure 7 for Figure 6 A magnified view of part AA.

[0031] Among them: cylinder 1, working roller 2, stripping roller 3, bundling inlet 4, bundling device 5, second motor 6, yarn guide 7, yarn outlet 8, twister 9, first motor 10, compression plate 11, limiting plate 12, storage tank 13, nozzle 14, transport roller 15, doffer 16. Detailed Implementation

[0032] The following is in conjunction with the appendix Figures 1-7 The embodiments of the present invention will be described in conjunction with related examples. The embodiments of the present invention are not limited to the following examples, and the relevant necessary components of the present invention should be regarded as well-known technology in the field of this art, which can be known and mastered by those skilled in the art.

[0033] In this invention, the front-to-back direction refers to the fiber transport direction, which is also the direction of movement of the conveyor belt. From front to back, it is the direction of the fiber from the opening machine to the winding machine. The left-to-right direction refers to the width direction of the conveyor belt.

[0034] Nonwoven fabric, also known as non-woven cloth, needle-punched cotton, needle-punched nonwoven fabric, etc., is made of polyester fiber and polyester fiber material. It is made through needle punching process and can be made in different thicknesses, feel, hardness, etc. Nonwoven fabric has no warp and weft threads, which makes cutting and sewing very convenient. It is also lightweight and easy to shape. It is a kind of fabric that does not require spinning and weaving. It is made by arranging short textile fibers or filaments in a directional or random manner to form a fiber web structure, and then reinforcing it by mechanical, thermal bonding or chemical methods. Nonwoven fabric breaks through the traditional textile principle and has the characteristics of short process flow, fast production speed, high output, low cost, wide application and multiple raw material sources.

[0035] The non-woven fabric on the market is mostly water-jet non-woven fabric, which is obtained by spraying high-pressure micro-fine water flow to one or more fiber nets to make the fibers entangle with each other, so that the fiber net is reinforced to have certain strength. The manufacturing process of the water-jet non-woven fabric is extremely energy-consuming, the maintenance cost of the equipment is high, the process is relatively complex, the used site is large, and the water-jet non-woven fabric has poor water absorption and water storage functions.

[0036] In view of the above defects, the present application provides a single-layer non-woven fabric production process with strip-shaped fibers, as shown in Figure 1 and Figure 2 , the steps are as follows:

[0037] Step one: opening, the raw material is put into the opening machine, the opening machine tears the large tangled fibers into small pieces or bundles, and at the same time, the mixing and impurity removal functions are realized during the opening process. In the initial stage of opening, the larger impurities and the impurities with small adhesion in the raw material are easy to separate. With further opening, part of the small impurities is removed, and some impurities with strong adhesion can be removed in large quantities in the carding or combing stage.

[0038] Among them, the operation of the opening machine is divided into three parts, namely, tearing, beating and impurity removal. The tearing is realized by the relative movement of two machine parts with angle nails and needle teeth on the surface, which tears and loosens the fiber blocks in the raw material. During the tearing process, the fibers displace each other, the density of the fiber block decreases, and the connection between the fibers and the impurities weakens, and some impurities with small adhesion are separated.

[0039] The beating uses the blades, wings, angle nails or needle teeth on the high-speed rotating beating machine part (commonly known as the beater) to beat or simultaneously pierce the fiber raw material to divide and card, destroy the connection between the fibers and the impurities, and achieve the purpose of further loosening the fiber blocks and removing the impurities. The beating is usually carried out on the basis of the tearing, and the fiber blocks are loosened to be smaller after the beating, so that the small impurities are removed, and the structure and uniformity of the semi-finished product are improved.

[0040] In order to remove various impurities during the opening of the raw material, a grid-shaped dust grid composed of a plurality of dust rods is generally installed around the beater. The fiber blocks and impurities separated by the high-speed rotating beater are thrown to the dust grid and collide with the dust rods. The fiber blocks are retained by the dust rods, and the impurities fall through the gap between the dust rods. Then, the fiber blocks move forward under the action of the beating of the beater and the airflow.

[0041] Step two: the first carding, the fiber in step one is fed into the first carding machine for processing, the first carding machine makes the fiber bundle get preliminary decomposition, the first carding machine is for the first carding, and the effect of removing impurities and short fibers is achieved.

[0042] The web forming is one of the key core technologies of nonwoven fabric, at present, most of the domestic and foreign adopt carding web forming mode, fiber carding is the key process of web forming, the small fiber bundle prepared by opening and mixing is carded into a thin net composed of single fibers, which is used for laying and stacking, or directly reinforced, or air-laid to manufacture fiber random arrangement web.

[0043] As shown in Figure 2 The carding machine used in the application includes a pre-carding system and a main carding system, the pre-carding system and the main carding system are provided with a cylinder 1, a work roller 2 and a stripping roller 3, the pre-carding system is arranged in front of the main carding system, a conveying roller 15 is arranged between the two systems, and the conveying roller 15 has a stripping effect between the two cylinders 1, the combination of the work roller 2 and the stripping roller 3 is provided with a plurality of groups, and the plurality of groups of the combination of the work roller 2 and the stripping roller 3 are arranged above the cylinder 1, in the pre-carding system, the cylinder 1, the work roller 2 and the stripping roller 3 constitute a carding effect, which can open the fiber block into a fiber bundle, in the main carding system, the cylinder 1, the work roller 2 and the stripping roller 3 have the same working principle as the pre-carding system, but the work roller 2 and the stripping roller 3 are more than those of the pre-carding system, so that sufficient carding is ensured.

[0044] The fiber layer is thinned by pre-carding, and the fibers in the fiber layer have been converted into small fiber bundles, and the carding force is much smaller than that of the pre-carding system. The main carding system aims to fully card and mix the fibers, and the fiber bundle is decomposed into single fibers. The main carding system is provided with a doffer 16 at the rear, and the doffer 16 is used for transferring and outputting the fiber strip.

[0045] Step three: the second carding, the fiber carded in step two is fed into the second carding machine for processing, the fiber is repeatedly carded and stripped in the second carding machine, the fiber bundle is gradually decomposed into a strip-shaped single fiber, a net-shaped fiber thin layer is formed, and then the fiber strip is formed, after the carding, many impurities and defects are excluded, different quality and color fibers are sufficiently mixed, the fibers are preliminarily stretched, and have directionality.

[0046] Unlike the traditional spunlace nonwoven fabric, the single-layer nonwoven fabric with strip-shaped fibers produced by the application is composed of single-layer strip-shaped fibers, and the pre-carding and impurity removal are particularly important, so a second carding machine is added after the opener and the first carding machine, so that the nonwoven fabric is softer and has a drape effect, and the fibers with directionality will enter the twisting machine with the conveying belt.

[0047] Step 4: Twisting. The combed fiber strips from Step 3 are fed into a twisting machine for processing. The twisting machine twists two or more fiber strips that already have a direction into a single strip fiber. The yarn guide 7 and the yarn outlet 8 in the twisting machine have the function of pulling the yarn. They can ensure the consistency of twist and length and ensure that the strip fiber is transported evenly to the bundling device in Step 5.

[0048] A twisting machine is a textile machinery device that twists multiple strands of fine yarn into one. The twisting machine used in this invention consists of a set of yarn guides 7, a set of yarn guides 8, and two sets of twisters 9, as follows: Figure 5 As shown, the yarn guide 7 is located at the front end of the two sets of twisting machines, the two sets of twisting machines 9 are located behind the yarn guide 7, and the yarn outlet 8 is located behind the two sets of twisting machines 9. Each yarn guide 7 and each yarn outlet 8 consists of four guide wheels. Each twisting machine 9 is connected to each other by a belt, and each set of twisting machines 9 is connected to the first motor 10 by a belt.

[0049] The fiber sliver entering the twisting machine is guided by the yarn guide 7 into the twister 9. The fiber sliver can be two or more strands. Two strands produce strip-shaped fibers with better stretchability and softness, which is the optimal choice for this invention. The two strands of fiber sliver are twisted by two sets of twisters 9. Both sets of twisters 9 are driven by the first motor 10. The two sets of twisters 9 are arranged horizontally in the front-back direction. The first set of twisters 9 is for initial twisting, and the second set of twisters 9 is for additional twisting. The additional twisting can form a tight structure that is not easily destroyed by lateral external forces, making the fiber sliver stronger. After the fiber sliver enters the twister 9 and is processed into strip-shaped fibers, it is discharged by the outlet 8.

[0050] Step 5: Bundling. The twisted strip fibers from Step 4 are fed into the bundling device for processing. The bundling device includes a bundling inlet 4, a bundler 5, and a second motor 6. The strip fibers are fed into the bundler 5 from the bundling inlet 4. The bundler 5 gathers the strip fibers together, so that each strip fiber is tightly bundled into a layer.

[0051] like Figure 4 and Figure 5 As shown, the bundling inlet 4 is located in front of the bundling unit 5, and the second motor 6 is located below the bundling unit 5. Baffles are provided on the left and right sides of the bundling inlet 4. The bundling inlet 4 gradually decreases in size along the direction of the movement of the strip fibers, so that the strip fibers transported from the twisting machine gradually move inward. Compression plates 11 are provided on the left and right sides inside the bundling unit 5. The compression plates 11 can move freely in the left and right direction. A limiting plate 12 that can move freely in the up and down direction is provided at the top of the bundling unit 5. A telescopic structure is provided between the compression plate 11 and the outer shell of the bundling unit 5. A telescopic structure is provided between the limiting plate 12 and the outer shell of the bundling unit 5. The telescopic structure is connected to the second motor 6.

[0052] The telescopic mechanism is driven by the second motor 6, the motor rotates to drive the bearing, and the long rod is pushed to realize telescopic movement. The compression plates 11 on the left and right sides are used to make the strip-shaped fibers closely adhere. The above-mentioned bundling inlet 4 has already converged the strip-shaped fibers inward, and then the compression plates 11 compress the strip-shaped fibers, so that the strip-shaped fibers will not deviate due to the large compression movement distance. The limiting plate 12 at the top end of the bundler 5 moves together with the compression plate 11, further preventing the deviation of the strip-shaped fibers.

[0053] The bundler 5 is provided with an opening at the rear end and a pair of rollers at the rear. The height of the opening is relatively low, and the strip-shaped fibers coming out of the opening will enter the rollers. The design of the opening and the addition of the rollers are both to prevent the compressed strip-shaped fibers from deforming due to their own elasticity and stretching, which will damage the shape of the strip-shaped fibers.

[0054] Step six: glue spraying. The compressed strip-shaped fibers in step five are placed into a glue spraying machine to spray glue. The glue spraying machine sprays latex in the form of water mist onto the upper surface of the strip-shaped fibers by using high-pressure gas, so that each strip-shaped fiber is tightly adhered together by the latex.

[0055] As shown in Figure 2 , the glue spraying machine includes a support frame, a spray head 14, and a storage tank 13. The spray head 14 is connected to the storage tank 13 through a conduit. The spray head 14 is movably arranged on the support frame in the left-right direction. When the strip-shaped fibers come to the lower side of the glue spraying machine, the glue spraying machine outputs the latex from the storage tank 13 to the spray head 14 through the conduit. The spray head 14 is provided with small holes. Then, the glue spraying machine sprays the latex in the form of water mist onto the upper side of the strip-shaped fibers by using compressed air.

[0056] Step seven: drying. The strip-shaped fibers sprayed with latex in step six are placed into a drying machine to dry. The drying machine uniformly sends heat into the inside of the box body through a hot air circulation system, so that the latex on the surface of the strip-shaped fibers is solidified by heating, and a single-layer non-woven fabric is made.

[0057] Step eight: winding. The single-layer non-woven fabric completed in step seven is wound into a roll by a winding machine. The non-woven fabric winding machine moves in a winding rotary motion under the tension of a silicon steel sheet. The stress on the winding drum and the main shaft is larger than that on the unwinding machine. The torque motor has constant power transmission characteristics, that is, the torque speed is constant. The speed of the non-woven fabric winding machine drum automatically decreases with the increase of the torque, which ensures the constant winding line speed. This realizes the design of constant winding speed and realizes the automation of the winding process.

[0058] In this invention, the first carding machine in step two and the second carding machine in step three are both preferably roller carding machines. Roller carding machines cause less damage to long fibers and can card a wide range of fiber lengths, making them very suitable for carding nonwoven fibers. Using roller carding machines together with the first carding machine and the second carding machine can make the produced fiber sliver softer and more comfortable, while reducing the loss of raw materials during the carding process.

[0059] As the yarn twist increases, its strength increases. In step four of this invention, the twister 9 twists two fiber strips into one. The twisting direction of the two sets of twisters 9 is set from the lower right corner to the upper left corner. The S twist, which is consistent with the middle of the "S", is the optimal choice. The strip fiber formed by twisting two fiber strips into one is more uniform and delicate. Both the initial twist and the re-twist are S twists, which makes the strength and comfort of the strip fiber more balanced.

[0060] In this invention, the optimal choice is to set the width of the inner wall of the bundle entry 4 on the side away from the bundler 5 in step five to be the same as the width of the conveyor belt, and the width of the inner wall of the bundle entry 4 on the side close to the bundler 5 to be the same as the width of the inner wall of the bundler. This allows the strip fibers to enter the bundle entry 4 more smoothly and is less likely to deviate. The process from the bundle entry 4 to the bundler 5 is also smoother, resulting in a better bundle effect.

[0061] This invention produces a single-layer nonwoven fabric with strip-shaped fibers. Because its interior consists of a single layer of uniformly arranged strip-shaped fibers, it is lightweight and comfortable, suitable for manufacturing daily necessities such as sanitary napkins and diapers. Sanitary napkins typically consist of a top layer, a distribution layer, an absorbent core layer, and a bottom layer arranged from top to bottom. This invention is applicable to the top layer and the absorbent core layer, such as... Figure 6 and Figure 7 As shown, a single-layer nonwoven fabric with striped fibers is used in the surface layer of sanitary napkins. This surface layer is in direct contact with the skin. The single-layer nonwoven fabric produced by this invention is thin and comfortable, unlike ordinary fabrics, and will not cause stuffiness, itching, or other discomfort. Figure 7 As shown, the nonwoven fabric produced by this invention forms capillary channels inside to promote liquid absorption. Whether in the surface layer or the distribution layer, it facilitates liquid entry into the absorbent core layer, ensuring the dryness of the surface layer. It also has a strong liquid storage capacity, preventing side or front / back leakage. In the field of diapers, this invention is suitable for the surface layer, distribution layer, and wing protectors at the groin area of ​​diapers.

[0062] The first carding machine in step two and the second carding machine in step three have the same composition. To distinguish between the cylinder 1, work roller 2, stripping roller 3, transport roller 15, and doffer 16, this invention... Figure 2The several component devices are separately marked, such as the mark "1" set in the first carding, the same position is also "1" in the second carding; the mark "2" set in the second carding, the same position is also "2" in the first carding, only for distinguishing, not all marked.

[0063] The above is only the preferred embodiment of the present application, it should be pointed out that, for the ordinary skilled in the art, without departing from the principles of the present application, can also make several improvements and refinements, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A process for producing a single-layer nonwoven fabric having strip-like fibers, characterized by, The steps are as follows: Step one: opening, the raw material is put into the opening machine, the opening machine makes the large tangled fibers loose into small pieces or bundles by tearing, and has mixing and impurity removal effect in the process of loosening, in the initial stage of opening, impurities and small impurities in the raw material are easy to separate, with further opening, part of the small impurities are removed; Step two: first carding, the fiber after opening in step one is fed into the first carding machine for processing, the first carding machine makes the fiber bundle obtain preliminary decomposition, carries out first carding, and plays the effect of impurity removal and short nap, the purpose of the first carding machine is to make the fiber bundle be fully opened and mixed, and prepare for the second carding in step three; Step three: second carding, the carded fiber in step two is fed into the second carding machine for processing, the second carding machine repeatedly cards and picks the fiber, gradually decomposes the fiber bundle into strip single fiber, forms a net-like fiber thin layer, and then collects into a fiber strip, many impurities and defects have been removed after carding, different quality and color fibers are fully mixed, the fiber is preliminarily straightened and has directionality; Step four: twisting, the carded fiber strip in step three is put into the twisting machine for processing, the twisting machine twists two or more fiber strips with direction into a strip fiber, the yarn guide (7) and the yarn guide out (8) in the twisting machine have the function of guiding yarn, which can ensure the consistency of twist and length and ensure the uniform transportation of the strip fiber to the bundling device in step five; Step five: bundling, the twisted strip fiber in step four is put into the bundling device for processing, the bundling device includes a bundling inlet (4), a bundling device (5) and a second motor (6), the strip fiber is transported into the bundling device (5) from the bundling inlet (4), the bundling device (5) bundles and collects the strip fiber, so that each strip fiber is tightly bundled into a layer; Step six: glue spraying, the compressed strip fiber in step five is put into the glue spraying machine for glue spraying, the glue spraying machine sprays the latex on the surface of the strip fiber in the form of water mist by using high-pressure gas, so that each strip fiber is tightly adhered together by the latex; Step seven: drying, the strip fiber sprayed with latex in step six is put into the drying machine for drying, the drying machine sends heat evenly into the box body through the hot air circulation system, the latex on the surface of the strip fiber is solidified through heating, and a single-layer non-woven fabric is prepared; Step eight: winding, the single-layer non-woven fabric completed in step seven is wound into a roll material by the winding machine.

2. The process for producing a single-layer nonwoven fabric having strip-shaped fibers according to claim 1, characterized by, The first carding machine in step two and the second carding machine in step three are provided with two systems, each system is composed of a cylinder (1), a work roll (2) and a stripping roll (3), a conveying roll (15) is arranged between the two systems, the combination of the work roll (2) and the stripping roll (3) is provided with a plurality of groups, and the plurality of groups of the work roll (2) and the stripping roll (3) are arranged above the cylinder.

3. The process for producing a single-layer nonwoven fabric having strip fibers according to claim 1, wherein The twisting machine in step four includes a group of yarn guides (7), a group of yarn guides out (8) and two groups of twisting devices (9), the two groups of twisting devices (9) are arranged behind the yarn guides (7), and the yarn guides out (8) are arranged behind the two groups of twisting devices (9).

4. The process for producing a single-layer nonwoven fabric having strip-shaped fibers according to claim 3, characterized by, The yarn guide (7) and the group of guide (8) are provided with four guide wheels, each twist frame (9) is connected by a belt, the two groups of twist frame (9) and the first motor (10) are connected.

5. The process for producing a single-layer nonwoven fabric having strip fibers according to claim 1, wherein The bundle entrance (4) of the above step five is provided with baffle on left and right sides, the bundle entrance (4) gradually decreases along the direction of strip-shaped fiber movement, the bundler (5) is arranged behind the bundle entrance (4), the rear end of the bundler (5) is provided with an opening, a pair of rollers is arranged behind the bundler (5).

6. The process for producing a single-layer nonwoven fabric having strip fibers according to claim 1, wherein The bundler (5) of the above step five is respectively provided with compression plate (11) on left and right sides, the compression plate (11) is freely movable along left and right directions, the top end of the bundler (5) is provided with limiting plate (12) freely movable along up and down directions, the compression plate (11) and the bundler (5) shell are provided with telescopic structure, the limiting plate (12) and the bundler (5) shell are provided with telescopic structure, the telescopic structure is connected with the second motor (6).

7. The process for producing a single-layer nonwoven fabric having strip fibers according to claim 1, wherein The glue spraying machine of the above step six includes support frame, spray head (14) and storage tank (13), the spray head (14) is connected with the storage tank (13) through the pipe, the spray head (14) is movably arranged on the support frame along left and right directions.

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