CN112831906B - Continuous glass fiber stitch-bonded felt production device and production method - Google Patents
Continuous glass fiber stitch-bonded felt production device and production method Download PDFInfo
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- CN112831906B CN112831906B CN202110017902.6A CN202110017902A CN112831906B CN 112831906 B CN112831906 B CN 112831906B CN 202110017902 A CN202110017902 A CN 202110017902A CN 112831906 B CN112831906 B CN 112831906B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B23/00—Flat warp knitting machines
- D04B23/10—Flat warp knitting machines for knitting through thread, fleece, or fabric layers, or around elongated core material
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B21/14—Fabrics characterised by the incorporation by knitting, in one or more thread, fleece, or fabric layers, of reinforcing, binding, or decorative threads; Fabrics incorporating small auxiliary elements, e.g. for decorative purposes
Abstract
The invention belongs to the technical field of non-woven reinforced materials, and particularly relates to a production device and a production method of a continuous glass fiber stitch-bonded felt. The continuous glass fiber stitch-bonded felt production device comprises a creel, wherein the creel and a yarn dividing device are sequentially connected with a yarn swinging machine head, a conveying belt is arranged below the yarn swinging machine head, a yarn pressing device is arranged above one end of the conveying belt, a transition plate, a stitch-bonded machine head and a pulling roller are sequentially connected with a coiling machine, and the stitch-bonded machine head is connected with a stitch-bonded wire head. Leading out continuous glass fiber precursor from a creel, leading the continuous glass fiber precursor into a filament swinging machine head through a filament dividing device, throwing the continuous glass fiber precursor onto a conveying belt by the filament swinging machine head to form a felt tire, conveying the felt tire by the conveying belt, pressing the felt tire to be thin through a filament pressing device, leading the thin felt tire to enter a stitch-bonding machine head through a transition plate for stitch-bonding and forming, and leading the felt tire to enter a coiling machine for width-dividing coiling through a pulling roller to obtain the glass fiber composite material. The invention has the advantages of large output, high production stability, stable quality and low production cost.
Description
Technical Field
The invention belongs to the technical field of non-woven reinforced materials, and particularly relates to a production device and a production method of a continuous glass fiber stitch-bonded felt.
Background
Conventional continuous glass fiber mats are a non-woven reinforcement material used primarily for various glass fiber reinforced plastic mechanical forming, such as pultrusion, Resin Transfer Molding (RTM), winding, high performance SMC, and the like. The continuous felt has excellent performance, good isotropy, higher tensile strength and bending strength than chopped felt products, good migration resistance and resin scouring resistance; in the RTM process, the injected high-pressure resin felt cannot deform; good permeability, easy cutting, good covering property, good flow conductivity and high surface smoothness of products, and is particularly suitable for high-performance and high-strength composite material products.
There are two methods for producing continuous glass fiber mats: firstly, the one-step process, the good precursor of beam splitting that comes out by the bushing plate directly uses special throwing silk equipment to throw continuous glass fiber precursor on the guipure, and the directional lopping distributes, forms the felt child, applys binder, stoving, cooling shaping with the felt child again. The second is two-step method, which is to put the raw silk tube on the creel to be released, draw and lay felt by special silk throwing equipment, apply adhesive, dry and cool to form. The core technology of the two methods is a method for manufacturing the felt tyre, at present, domestic manufacturers use a throwing wheel method for looping to form the felt tyre, and then add a binder for forming, and the forming method is to lay continuous glass fiber strands in a longitudinal, oblique and transverse cross mode while looping so as to ensure the single weight uniformity and the strength uniformity of the product. The method has the advantages of large investment, high operation cost, high price of the produced felt, low strength, poor scouring resistance and poor cutting property.
The pultrusion production process is a composite material molding method which continuously passes the reinforcing material impregnated with resin through a heating die to be cured and molded under the action of traction force; the flow chart of the pultrusion production process is shown in figure 1.
The pultrusion process has the following requirements on the stitch-bonded felt:
1. the felt surface requires: in the pultrusion process, the stitch-bonded felt is used as a surface layer, and the surface of a product needs to be smooth and beautiful, so that the felt surface needs to be compact, the fibers are uniformly distributed, and pores cannot be formed.
2. Uniformity per unit weight: the pultrusion process is to make the felt and yarn pass through the die opening, the thickness of part of glass fiber reinforced plastic product is only 2mm, the die opening is very narrow, the felt is not even, the felt can not pass through the die, the felt is broken, and the die is blocked. Therefore, a very high uniformity of the felt is required.
3. Tensile strength: the high-strength glass fiber reinforced plastic felt used for pultrusion has higher strength, is not easy to break, can improve the glass fiber content of a product and reduce the production cost; meanwhile, the strength of the manufactured glass fiber reinforced plastic product is high.
4. Stiffness: the higher the stiffness of the felt is, the more difficult the felt is to deform in the pultrusion process, and the problems of felt folds, mold blockage, untight coating of the felt on a product and the like caused by felt deformation can be avoided.
5. Elasticity: the larger the elasticity is, the more easily the felt is stretched and deformed in the pultrusion process, which causes the problems of felt corrugation, mold blockage, untight coating of the felt on a product and the like.
6. Permeability: the stitchbonded felt is required to be able to be quickly saturated with resin, factors affecting the saturation: firstly, the surface performance of the glass fiber, secondly, the resin penetrating performance of the felt and good penetrability can ensure that the felt and the resin are fully soaked.
At present, the pultrusion production uses the chopped glass fiber stitch-bonded felt, the strength of the felt and the strength of the glass fiber reinforced plastic product are both lower, the chopped glass fiber stitch-bonded felt which has higher strength requirement cannot meet the requirement, and the price of the continuous glass fiber felt is higher. Therefore, it is highly desirable to provide a device and a method for producing a continuous glass fiber stitch-bonded felt with high production stability, stable quality and low production cost.
Disclosure of Invention
The invention aims to provide a continuous glass fiber stitch-bonded felt production device which is scientific and reasonable and is simple and convenient to operate; the invention also provides a production method of the continuous glass fiber stitch-bonded felt, which has the advantages of large yield, high production stability, stable quality and low production cost, and the prepared continuous glass fiber stitch-bonded felt has high strength, good scouring resistance and good cutting property.
The continuous glass fiber stitch-bonded felt production device comprises a creel, wherein the creel and a yarn dividing device are sequentially connected with a yarn swinging machine head, a conveying belt is arranged below the yarn swinging machine head, a yarn pressing device is arranged above one end of the conveying belt, a transition plate, a stitch-bonding machine head and a drawing roller are sequentially connected with a coiling machine, and the stitch-bonding machine head is connected with a stitch-bonding wire coiling head.
The number of the creels is 4.
2 creels constitute 1 creel group, 2 creel groups set up respectively in conveyer's both sides.
The number of the yarn dividing devices is 4.
The yarn dividing device consists of a yarn guide plate, a transverse moving device and a power device, wherein the yarn guide plate, the transverse moving device and the power device are sequentially connected.
The distance between the yarn guide plates is 5-20 mm.
The power device is a motor.
The number of the silk swinging machine heads is 4.
The pendulum silk aircraft nose include steel roller, rubber roller and compression roller, steel roller and rubber roller parallel arrangement, the compression roller passes through the glass fiber precursor and links to each other with the rubber roller, the below of rubber roller is provided with shells the yarn board, shells the both ends of yarn board and is provided with the fixed plate, shells the interval on the yarn board and is provided with the mounting groove.
The installation grooves arranged on the yarn stripping plate at intervals can completely prevent the winding roller, the rubber roller can prevent the winding roller through the stripping effect of the yarn stripping plate, and the rubber roller can also realize the timely stop through the monitoring device once the winding roller is wound.
The diameter of the steel roller is 250-350 mm.
The yarn pressing device is obliquely arranged relative to the conveying belt.
The yarn pressing device is a conveying belt.
The transition plate is composed of 2 transition single plates.
The length of the transition plate is 403mm, the width of the transition plate is 210mm, and the gap between 2 transition single plates is less than or equal to 2 mm.
The stitch-knitting machine head comprises a grooved needle, a baffle needle and a yarn guide needle, wherein the grooved needle, the baffle needle and the yarn guide needle are sequentially arranged from left to right.
The yarn guide needle is connected with the stitch-bonding wire coil head.
The baffle needle is an E14 type baffle needle.
The continuous glass fiber stitch-bonded felt production method adopting the continuous glass fiber stitch-bonded felt production device is characterized in that continuous glass fiber precursor is led out from a creel and enters a filament swinging machine head through a yarn dividing device, the filament swinging machine head throws the continuous glass fiber precursor onto a conveying belt to form a felt tire, the conveying belt conveys the felt tire to be thinned through a yarn pressing device, the thinned felt tire enters the stitch-bonded machine head through a transition plate to be stitch-bonded and formed, and then enters a coiling machine through a traction roller to be coiled in a width dividing manner, so that the continuous glass fiber stitch-bonded felt is obtained.
The thickness of the thinned felt is less than or equal to 5 mm.
The stitch-bonding thread is arranged on the stitch-bonding thread coil head, and the stitch-bonding thread on the stitch-bonding thread coil head enters the yarn guide needle, the groove needle and the baffle needle to stitch-bond the felt during the stitch-bonding of the felt.
The yarn swinging machine head is a yarn traction device comprising a steel roller, a rubber roller and a compression roller, the steel roller is a driving roller and is controlled by a servo motor, and the diameter of the steel roller is 250-350 mm; the larger the diameter, the higher the linear velocity, the higher the output, but the speed is too high, and it is easy to wind the rubber roller and the steel roller, preferably the linear velocity of the steel roller is 340-.
The higher the distance from the filament swinging machine head to the conveying belt is, the larger the self weight of the yarn is, the yarn is not easy to wind the roller, but the too high distance is greatly influenced by air flow and static electricity, and the distance is also limited by the height of a factory building, so the distance from the filament swinging machine head to the conveying belt is preferably 0.95-1.05 cm.
The invention is provided with a plurality of filament swinging machine heads, and each machine head can independently adjust the speed to obtain filament loops with different screw pitches; at least 2 machine heads can use different glass fiber protofilaments to adjust the strength, penetrability, coverage and the like of the felt and meet the requirements of different performances of the felt; on the premise of certain single weight of the felt, the speed of a single machine head can be reduced, and the number of winding rollers is reduced; the multiple machine heads are started simultaneously, so that the yield can be greatly improved.
In order to increase the transverse strength of the felt, the strand needs to be transversely reciprocated, so that the glass fiber circles are spirally crossed in the longitudinal direction and are also spirally crossed in the transverse direction. The invention designs a novel yarn dividing device, and a transverse moving device is additionally arranged in the yarn dividing device to push a yarn guide plate so as to transversely move protofilaments. If the crossing distance is too large, the edge portion is small and needs to be cut off, which causes the reduction of the outturn rate, so the crossing distance is preferably 5-20 mm.
Because the ring-shaped glass fiber felt is very fluffy and cannot enter a stitch-bonding machine head with a narrow passage, the invention designs the horn mouth type yarn pressing device to laminate fluffy fibers and stitch-bond the fluffy fibers in a holding state of the fiber layer.
The existing transition plate is composed of 6 transition single plates, and the transition plate is easy to hang, accumulate and drum yarns, so that the problem of uneven single weight of a product is caused; the transition plate is composed of 2 transition single plates, so that the gap is reduced, the yarn hanging probability is reduced, and the problem that the single weight of a product is uneven due to the fact that the conventional transition plate is easy to hang, accumulate and drum yarns is solved. A schematic structural view of a conventional transition plate and a transition plate of the present invention is shown in fig. 2.
The surface of the existing transition plate is treated and improved, so that the surface is smoother and is not easy to hang yarns; the size is improved, the original splicing of 6 transition single plates is changed into 2 splicing, and the problem of yarn hanging at the splicing position is effectively reduced.
Compared with the chopped fiber, the continuous fiber is easy to puncture by the time slot needle to form a felt loop when being stitch-bonded, and the puncture phenomenon can be reduced by using the encrypted baffle needle; the shutter needle of the present invention is preferably an E14 type shutter needle.
The arrangement space of the yarns is too large, the felt surface coverage is poor, the undersized yarns are mutually adsorbed and adhered and cannot be looped normally, preferably the space is 10-40mm, so the space between the yarn guide plates is preferably 5-20 mm.
The continuous glass fiber looping is formed by the difference between the fiber throwing linear speed and the advancing speed of the conveying belt, the lower the traction speed, the higher the spiral distance between the loops in the longitudinal direction, and the smaller the spiral distance, the larger the formed large pitch and the small pitch are shown in figure 3, and the looping diameter of the glass fiber strand is 150-250 mm.
After the range of the spiral spacing and the range of the diameter and the speed of the steel roller are determined, selecting proper tex value of the yarn and the number of split beams of the yarn, wherein on the premise of a certain single weight, the larger the tex is, the smaller the number of split beams is, the larger the pitch between circles is, poor coverage and holes are easy to appear, but the better the resin penetration performance is; on the contrary, the smaller tex, the larger the number of split beams, the smaller the pitch between turns, the better the coverage, but the smaller the amount of yarn laid down per unit time, the lower the yield, and the inferior resin penetration. Selecting proper tex value (280-320tex) of yarn and splitting number (10-16 splitting) of yarn, using different yarns with different gram weights, wherein the smaller the single weight of the product is, the more splitting number is needed to be used.
Simultaneously, the requirements on different properties of the felt are met by using a plurality of machine heads: (1) various grades of original yarns are matched for use, namely, in products which require good penetrability and compact surface, yarns with low tex value and high beam splitting are selected to be mixed with yarns with high tex value and low beam splitting, and the yarns are produced by using multiple machine heads; (2) in a product requiring high longitudinal strength, a plurality of machine heads are used, different wire throwing linear speeds are selected by the machine heads, different screw pitches are formed among the rings, the large screw pitch is mainly used for improving the high longitudinal strength, and the small screw pitch is used for maintaining the coverage of the felt surface; (3) and a plurality of machine heads are used, and the transverse relative movement is realized, so that the transverse strength of the felt is enhanced.
The glass fiber strands can also be added with a sizing agent, and the sizing agent is selected to be compatible with the used resin and also to be suitable for the softness and stiffness of the glass fiber strands. According to the invention, the use of the relatively stiff glass fiber strands (the stiffness is 120-150mm) is selected, so that the stiffness of the felt can be increased, and the deformation resistance of the felt in the pultrusion process is improved.
The stitch-knitting thread is polyester non-elastic filament yarn.
Conventional stitch-bonding felting equipment uses a polyurethane glue roll for continuous felting particularly easy to wind around. The surface of the rubber roller is dry, so that the problem of roller winding is reduced.
The anti-winding roller device enables the fiber to be stripped off, thereby further reducing the problem of winding.
The diameter of the glass fiber strand loop in the continuous glass fiber stitch-bonded felt prepared by the invention is 150-250mm, the glass fiber strand loop is spirally arranged, the traversing range of each yarn is 5-20mm, and the distance between two adjacent glass fiber strands is 10-40 mm.
The continuous glass fiber stitch-bonding felt can be paved in a single layer, and also can be paved in multiple layers by using protofilaments of different types.
The invention provides a method for forming a felt tire by using double-roller throwing and then carrying out stitch-bonding forming, and the prepared continuous glass fiber stitch-bonded felt has high strength, good scouring resistance and good cutting property, and can be used for a glass fiber reinforced plastic pultrusion forming process.
The invention has the following beneficial effects:
(1) the continuous glass fiber can be uniformly spread and then stitch-bonded into a continuous glass fiber stitch-bonded felt;
(2) the continuous production can be realized, and the produced product has uniform unit weight, good surface coverage and no sand hole;
(3) the product can meet the performance requirements of longitudinal and transverse strength, penetrability, permeability and the like;
(4) the process parameters can be adjusted to produce differentiated products, and the requirements of customers on the special performance of the products are met;
(5) the yield is large, the production stability is high, the quality is stable, and the production cost is low;
(6) the product can partially replace expensive continuous glass fiber felt, has wide market prospect and considerable product profit.
Drawings
FIG. 1 is a flow diagram of a pultrusion production process, wherein A is a roving pellet; B. a yarn separating plate; C. an impregnation tank; D. a felt-like material; E. pre-forming a plate; F. molding a hot die; G. a traction device; H. and (6) sawing.
Fig. 2 is a schematic structural view of a transition plate, in which a is a conventional transition plate and B is a transition plate according to the present invention.
Fig. 3 is a schematic view of the structures of a coarse pitch and a fine pitch, in which a is the coarse pitch and B is the fine pitch.
FIG. 4 is a schematic structural view of a continuous glass fiber stitchbonded mat production apparatus of the present invention;
FIG. 5 is a schematic structural view of the yarn dividing device;
FIG. 6 is a schematic structural view of a filament oscillating head;
FIG. 7 is a perspective view of a filament oscillating head;
FIG. 8 is a partial enlarged view of the yarn presser and the conveyor belt;
FIG. 9 is a schematic view of a stitchbonding head construction;
in the figure: 1. a creel; 2. a yarn dividing device; 3. a filament swinging machine head; 4. a conveyor belt; 5. a yarn pressing device; 6. a transition plate; 7. a stitch-bonding machine head; 8. a pulling roll; 9. a coiler; 10. sewing and knitting a wire coil head; 11. a felt batt; 12. a yarn guide plate; 13. a lateral movement device; 14. a power plant; 15. a steel roll; 16. a rubber roller; 17. a compression roller; 18. glass fiber strands; 19. stripping the yarn plate; 20. a fixing plate; 21. mounting grooves; 22. a groove needle; 23. a shutter pin; 24. a yarn guide needle.
Detailed Description
The present invention is further described below with reference to examples.
Example 1
As shown in fig. 4, the continuous glass fiber stitch-bonded felt production device comprises a creel 1, wherein the creel 1, a yarn dividing device 2 and a yarn placing machine head 3 are sequentially connected, a conveying belt 4 is arranged below the yarn placing machine head 3, a yarn pressing device 5 is arranged above one end of the conveying belt 4, a transition plate 6, a stitch-bonding machine head 7, a pulling roller 8 and a coiling machine 9 are sequentially connected, and the stitch-bonding machine head 7 is connected with a stitch-bonding wire coiling head 10.
The number of creels 1 is 4.
2 creels 1 constitute 1 creel group, and 2 creel groups set up respectively in conveyer 4's both sides.
The number of the yarn dividing devices 2 is 4.
As shown in fig. 5, the yarn dividing device 2 is composed of a yarn guide plate 12, a transverse moving device 13 and a power device 14, wherein the yarn guide plate 12, the transverse moving device 13 and the power device 14 are connected in sequence.
The distance between the thread-guiding plates 12 is 10 mm.
The power unit 14 is an electric motor.
The number of the silk swinging machine heads 3 is 4.
As shown in fig. 6 and 7, the yarn swinging machine head 3 comprises a steel roller 15, a rubber roller 16 and a press roller 17, wherein the steel roller 15 and the rubber roller 16 are arranged in parallel, the press roller 17 is connected with the rubber roller 16 through a glass fiber protofilament 18, a yarn stripping plate 19 is arranged below the rubber roller 16, fixing plates 20 are arranged at two ends of the yarn stripping plate 19, and mounting grooves 21 are arranged on the yarn stripping plate 19 at intervals.
The diameter of the steel roll 15 is 300 mm.
As shown in fig. 8, the yarn presser 5 is disposed obliquely with respect to the conveyor belt 4.
The yarn pressing device 5 is a conveying belt.
The transition plate 6 is composed of 2 transition single plates.
The length of the transition plate 6 is 403mm, the width of the transition plate is 210mm, and the gap between 2 transition single plates is 2 mm.
As shown in fig. 9, the stitchbonding head 7 comprises a grooved needle 22, a shutter needle 23 and a guide needle 24, the grooved needle 22, the shutter needle 23 and the guide needle 24 being arranged in sequence from left to right.
The guide needle 24 is connected to the stitching head 10.
The shutter needle 23 is a shutter needle of type E14.
The continuous glass fiber stitch-bonded felt production method is characterized in that continuous glass fiber precursor is led out from a creel and enters a filament swinging machine head through a yarn dividing device, the filament swinging machine head throws the continuous glass fiber precursor onto a conveying belt, the continuous glass fiber precursor is distributed in a non-directional looped shape to form a felt tire, the conveying belt conveys the felt tire to be thinned through a yarn pressing device, the thinned felt tire enters the stitch-bonded machine head through a transition plate to be stitch-bonded and formed, and then enters a coiling machine to be coiled in a framing mode through a drawing roller, and the continuous glass fiber stitch-bonded felt is obtained.
The stitch-bonding thread is arranged on the stitch-bonding thread coil head, and the stitch-bonding thread on the stitch-bonding thread coil head enters the yarn guide needle, the groove needle and the baffle needle to stitch-bond the felt during the stitch-bonding of the felt.
The continuous glass fiber stitch-bonding felt can be paved in a single layer, and also can be paved in multiple layers by using protofilaments of different types.
Claims (7)
1. A continuous glass fiber stitch-bonded felt production device comprises a creel (1), and is characterized in that the creel (1) and a yarn dividing device (2) are sequentially connected with a yarn swinging machine head (3), a conveying belt (4) is arranged below the yarn swinging machine head (3), a yarn pressing device (5) is arranged above one end of the conveying belt (4), a transition plate (6), a stitch-bonding machine head (7) and a drawing roller (8) are sequentially connected with a coiling machine (9), and the stitch-bonding machine head (7) is connected with a stitch-bonding wire coiling head (10);
the yarn dividing device (2) consists of a yarn guide plate (12), a transverse moving device (13) and a power device (14), wherein the yarn guide plate (12), the transverse moving device (13) and the power device (14) are sequentially connected;
the yarn swinging machine head (3) comprises a steel roller (15), a rubber roller (16) and a compression roller (17), the steel roller (15) and the rubber roller (16) are arranged in parallel, the compression roller (17) is connected with the rubber roller (16) through glass fiber protofilaments (18), a yarn stripping plate (19) is arranged below the rubber roller (16), fixing plates (20) are arranged at two ends of the yarn stripping plate (19), and mounting grooves (21) are arranged on the yarn stripping plate (19) at intervals;
the yarn pressing device (5) is obliquely arranged relative to the conveying belt (4), and the yarn pressing device (5) is a conveying belt.
2. A continuous glass fiber stitchbonded mat production apparatus as claimed in claim 1 in which the spacing between the guide plates (12) is in the range of 5 to 20 mm.
3. The continuous glass fiber stitchbonded mat production apparatus as claimed in claim 1 in which the diameter of said steel roller (15) is 250-350 mm.
4. The apparatus for producing continuous glass fiber stitchbonded mat as claimed in claim 1 in which said transition plate (6) is comprised of 2 transition veneers.
5. The continuous glass fiber stitch-bonded felt production device according to claim 1, characterized in that the stitch-bonding machine head (7) comprises a grooved needle (22), a baffle needle (23) and a yarn guide needle (24), and the grooved needle (22), the baffle needle (23) and the yarn guide needle (24) are arranged in sequence from left to right.
6. The continuous glass fiber stitchbonded mat production apparatus of claim 5 in which the guide needles (24) are attached to the stitchbonding wire reel (10).
7. A continuous glass fiber stitch-bonded felt production method adopting the continuous glass fiber stitch-bonded felt production device of any one of claims 1 to 6, characterized in that continuous glass fiber strands are led out from a creel, enter a filament swinging machine head through a yarn dividing device, the filament swinging machine head throws the continuous glass fiber strands onto a conveying belt to form a felt tire, the conveying belt conveys the felt tire to press the felt tire to be thin through a yarn pressing device, the thin felt tire enters the stitch-bonded machine head through a transition plate to be stitch-bonded and formed, and then enters a coiling machine through a drawing roller to be coiled in a width dividing manner, so that the continuous glass fiber stitch-bonded felt is obtained.
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| CN106906566A (en) * | 2017-03-16 | 2017-06-30 | 福建省天连化纤织造有限公司 | The formula and preparation technology of a kind of deodorant antibacterial case and bag liner non-woven fabrics |
| CN109082776A (en) * | 2018-09-21 | 2018-12-25 | 江苏开迪新材料有限公司 | Using endless tow spinning cake as the sub-wire web forming device and implementation method of raw material |
| CN210527037U (en) * | 2019-07-18 | 2020-05-15 | 常州柯恒卫生用品有限公司 | Conveyor is used in panty-shape diapers production |
| CN212223269U (en) * | 2019-09-20 | 2020-12-25 | 江苏领瑞新材料科技有限公司 | High-strength fiber non-woven cloth tiling dispersion rubberizing device |
| CN211546854U (en) * | 2019-09-25 | 2020-09-22 | 石家庄天略工业用布有限公司 | Glass fiber continuous felt laying device |
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