CN111038005B - Production process of double-layer flame-retardant composite corrugated paper - Google Patents
Production process of double-layer flame-retardant composite corrugated paper Download PDFInfo
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- CN111038005B CN111038005B CN202010046342.2A CN202010046342A CN111038005B CN 111038005 B CN111038005 B CN 111038005B CN 202010046342 A CN202010046342 A CN 202010046342A CN 111038005 B CN111038005 B CN 111038005B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/20—Corrugating; Corrugating combined with laminating to other layers
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Abstract
The invention relates to a production process of double-layer flame-retardant composite corrugated paper, which comprises the following steps: preparing materials: a roll of corrugated paper, two rolls of boxboard paper, a glue spreader and a liquid sprayer; gluing: conveying corrugated paper to a gluing machine, and spraying viscose on two surfaces of the corrugated paper; bonding: conveying the two rolls of the cardboard paper and the corrugated paper in parallel, wherein the cardboard paper is respectively positioned at two sides of the corrugated paper, and extruding the cardboard paper to be attached to the corrugated paper to form a corrugated board; coating: conveying the corrugated board into a liquid spraying machine, and spraying flame retardant liquid to two sides of the corrugated board; and (3) drying: drying the corrugated board; cutting: longitudinally cutting and transversely cutting the corrugated board; and (5) off-line production of finished products. The invention has the effects that in the production process of the corrugated board, the two sides of the corrugated board are sprayed with the fire retardant, so that the surface of the corrugated board is adhered with the fire retardant substance, the fire resistance of the corrugated board is further effectively improved, and the fire occurrence probability is reduced.
Description
Technical Field
The invention relates to the technical field of corrugated paper production, in particular to a production process of double-layer flame-retardant composite corrugated paper.
Background
The corrugated board is formed by bonding at least one layer of corrugated paper and one layer of cardboard paper, and has good elasticity and extensibility.
The prior patent with publication number CN101130287B is a production process for producing high-pressure-bearing corrugated boards by using low-gram-weight corrugated raw material paper, which comprises the following steps: a roll of corrugated raw paper is fed on line, and a layer of lining is fed on line; a roll of corrugated raw material paper strips with the same width as the box height are put on line; adjusting and determining the position of the corrugated raw material paper strip relative to the corrugated raw material paper; spraying glue on each corrugated raw material paper strip; laminating, corrugating and lining-sticking the corrugated raw material paper and the corrugated raw material paper strips to prepare two pieces of surface paper; coating each second surface paper with glue for the second time; veneering to prepare a paperboard; drying the paperboard; longitudinally cutting the paperboard; transversely cutting a paperboard; and (5) off-line production of finished products.
The above prior art solutions have the following drawbacks:
when the corrugated cardboard is used in some places where open fire may exist, the corrugated cardboard is very easily burned, causing fire and financial loss.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a production process of double-layer flame-retardant composite corrugated paper, which is used for spraying flame-retardant liquid on two surfaces of a corrugated board to effectively improve the flame resistance of the corrugated board.
The above object of the present invention is achieved by the following means.
A production process of double-layer flame-retardant composite corrugated paper comprises the following steps:
preparing materials: a roll of corrugated paper, two rolls of boxboard paper, a glue spreader and a liquid sprayer;
gluing: conveying corrugated paper to a gluing machine, and spraying viscose on two surfaces of the corrugated paper;
bonding: conveying the two rolls of the cardboard paper and the corrugated paper in parallel, wherein the cardboard paper is respectively positioned at two sides of the corrugated paper, and extruding the cardboard paper to be attached to the corrugated paper to form a corrugated board;
coating: conveying the corrugated board into a liquid spraying machine, and spraying flame retardant liquid to two sides of the corrugated board;
and (3) drying: drying the corrugated board;
cutting: longitudinally cutting and transversely cutting the corrugated board;
and (5) off-line production of finished products.
Through adopting above-mentioned technical scheme, in corrugated container board production process, corrugated container board's both sides spraying has the fire retardant for corrugated container board surface adheres to fire-retardant material, and then the effectual anti flammability that promotes corrugated container board reduces the conflagration probability of occuring.
The present invention in a preferred example may be further configured to: the hydrojet machine includes the base and sets up the hydrojet room on the base, import and export have been seted up respectively to hydrojet room length direction's both ends, just in the hydrojet room and be located the both ends of vertical direction and all be provided with hydrojet head, one side of hydrojet room width direction is provided with the portal and follows the gliding door plant of vertical direction.
Through adopting above-mentioned technical scheme, before the hydrojet of first operation, the drive door plant upwards slides, and artifical both hands stretch into the indoor pulling corrugated container board of hydrojet and pass import and export, then close the door plant, in the hydrojet, the flame retardant liquid of hydrojet head to corrugated container board's two sides spraying to when using the hydrojet for a long time, through opening and closing of door plant, be convenient for manual work overhaul hydrojet.
The present invention in a preferred example may be further configured to: the gantry comprises a top rod and a group of symmetrical upright rods, the upright rods are arranged along the vertical direction, the top rod extends along the horizontal direction and is fixed at the upper ends of the upright rods, the ejector rod is provided with a through groove along the vertical direction, the door panel is embedded in the through groove along the vertical direction in a lifting manner, the top rod is provided with a driving component for driving the door plate to lift, one end of the door plate facing the slideway is provided with an installation groove, a sliding pin and an extrusion spring for pushing the sliding pin to be extruded on the upright rod are arranged in the mounting groove in a sliding manner, the lower end of the door panel is inserted with a group of limiting plates which are symmetrically butted with one end of the sliding pin facing the upright stanchion along the vertical direction in a sliding way, the limiting plates are provided with through holes for the sliding pin to pass through, and the lower extreme of limiting plate extends to the door plant, be connected with the bumper between the lower extreme of limiting plate, set up the groove of accomodating the bumper on the base.
By adopting the technical scheme, when the limiting plate naturally bears the gravity, the limiting plate blocks one end, facing the vertical rod, of the sliding pin, lubricating oil is coated at one end, abutted against the sliding pin, of the limiting plate, the limiting plate is provided with the through hole, and when the door plate descends, if the door plate is normally closed, the bumper is embedded in the accommodating groove; if the arm is not in time withdrawn from, the collision between bumper and the arm, the arm promotes the bumper and drives the limiting plate upwards slide, the very big sliding friction who has reduced between slip round pin and the limiting plate of lubricating oil for through-hole and the slip round pin on the limiting plate align, extrusion spring promotes the slip round pin butt fast in the pole setting, frictional force between slip round pin and the pole setting makes the door plant stop to continue to descend, and then avoids the arm to be pressed from both sides the problem of hindering, promote the security when pulling corrugated container board and overhauing.
The present invention in a preferred example may be further configured to: the slide has been seted up to the relative one end of pole setting, the relative both ends of door plant are slided and are inlayed and locate in the slide, the slide extends the setting along vertical direction.
Through adopting above-mentioned technical scheme, the both sides of door plant width direction slip to inlay and locate in the slide, and the slide has further injectd the slip direction of door plant.
The present invention in a preferred example may be further configured to: the relative one end of pole setting just is equipped with the triangular groove along vertical direction spaced apart, the one end of sliding pin orientation pole setting is provided with and inlays to establish the complex triangle fixture block with the triangular groove.
Through adopting above-mentioned technical scheme, when extrusion spring promoted the slide pin and removed, the triangle fixture block of slide pin tip inlays and locates in the triangular groove, and the cooperation increases the stability that the locking door plant removed between triangular groove and the triangle fixture block, and then staff's security when promoting the protection operation.
The present invention in a preferred example may be further configured to: the door plant dorsal part just is located its horizontal direction's relative both ends and is provided with the rack, the rack extends the setting along vertical direction, drive assembly is including being fixed in driving motor on the ejector pin and the coaxial drive shaft that is fixed in driving motor rotation end, the coaxial drive gear that is provided with in the drive shaft, the meshing sets up between drive gear and the rack.
Through adopting above-mentioned technical scheme, when driving motor rotated, drive gear drove the rack and removes, and then realized the lift of door plant.
The present invention in a preferred example may be further configured to: the dorsal part of door plant is seted up and is used for inlaying the fixed slot of establishing the rack, be provided with the promotion spring in the fixed slot, the promotion spring has the trend that promotes the rack to the gear removal.
Through adopting above-mentioned technical scheme, promote the spring support rack for stable meshing transmission between rack and the gear, nevertheless when the door plant locking removes, the motor continues to rotate, and drive gear promotes rack compression and promotes the spring, and then avoids the dead drive gear of rack card to cause the motor damage.
The present invention in a preferred example may be further configured to: the lower end of the rack is provided with an embedded groove, a guide inclined plane is arranged in the embedded groove, the limiting plate is abutted to the guide inclined plane in a sliding mode, and when the limiting plate slides upwards, the rack moves towards the direction of extruding the supporting spring.
Through adopting above-mentioned technical scheme, when the bumper promoted the limiting plate upwards slide, the cooperation between limiting plate and the guide inclined plane for the rack slides to the fixed slot, and then realizes rack and drive gear's separation, further reduces because the cooperation produces the thrust to the door plant between drive gear and the rack, promotes the purpose that the stability of door plant locking realized the protection motor simultaneously.
The present invention in a preferred example may be further configured to: the door comprises a door plate and is characterized in that a communicating groove used for communicating with the mounting groove is formed in the front side of the door plate, a supporting rod is arranged in the communicating groove, supporting plates abutted against an extrusion spring are arranged at two ends of the supporting rod, the supporting rod comprises an inner rod and an outer rod, the inner rod is inserted into the outer rod in a sliding mode, and a locking bolt for extruding the inner rod is connected to the outer rod in a threaded mode.
Through adopting above-mentioned technical scheme, when the door plant lock is relieved to needs, take out locking bolt, the inner tube slides to the outer pole in, relieves the thrust of extrusion spring to the sliding pin, removes the sliding pin and gets into the mounting groove again in, realizes the lift control of door plant again.
In summary, the invention includes at least one of the following beneficial technical effects:
flame retardant liquid is sprayed on two surfaces of the corrugated board, so that the flame resistance of the corrugated board is improved;
the control structure that the door plant slides in the vertical direction promotes the security when pulling corrugated container board and overhauing in the hydrojet case.
Drawings
Fig. 1 is an assembly structure of a liquid spraying machine.
FIG. 2 is a schematic view for revealing a door panel mounting structure;
FIG. 3 is a schematic view for embodying a door panel lifting structure;
FIG. 4 is a schematic half-sectional view for embodying a door panel locking structure;
FIG. 5 is an enlarged schematic view at A of FIG. 3 for illustrating a door panel lift unlock configuration;
fig. 6 is a half-sectional schematic view for embodying a door panel lifting power releasing structure.
In the figure, 1, a liquid spraying chamber; 11. an inlet; 2. a base; 21. a receiving groove; 3. a gantry; 4. a top rod; 41. a through groove; 5. erecting a rod; 51. a slideway; 52. a triangular groove; 6. a door panel; 61. mounting grooves; 62. a slide pin; 621. a triangular clamping block; 63. a compression spring; 66. a limiting plate; 661. a bumper; 662. a through hole; 68. a communicating groove; 69. a rack; 691. caulking grooves; 692. a guide ramp; 70. a push spring; 71. fixing grooves; 72. a support bar; 721. an outer rod; 722. an inner rod; 723. a locking bolt; 73. a support plate; 8. a drive assembly; 81. a drive motor; 82. a drive shaft; 83. the gears are driven.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The first embodiment.
A production process of double-layer flame-retardant composite corrugated paper comprises the following steps:
preparing materials: a roll of corrugated paper, two rolls of linerboard paper, a glue spreader (refer to patent publication No. CN 108580162A), and a liquid spray;
gluing: conveying corrugated paper to a gluing machine, and spraying viscose on two surfaces of the corrugated paper;
bonding: conveying the two rolls of the cardboard paper and the corrugated paper in parallel, wherein the cardboard paper is respectively positioned at two sides of the corrugated paper, and extruding the cardboard paper to be attached to the corrugated paper to form a corrugated board;
coating: conveying the corrugated board into a liquid spraying machine, and spraying flame retardant liquid to two sides of the corrugated board;
and (3) drying: drying the corrugated board;
cutting: longitudinally cutting and transversely cutting the corrugated board;
and (5) off-line production of finished products.
Example two:
as shown in fig. 1 and 2, a liquid spray machine includes a liquid spray chamber 1 provided on a base 2, a door frame 3, and a door panel 6 sliding in a vertical direction, an inlet 11 and an outlet are respectively arranged at two opposite ends of the liquid spraying chamber 1, the inlet 11 and the outlet are respectively used for the input and the output of the corrugated board, and the two ends of the liquid spraying chamber 1 in the vertical direction are respectively provided with a nozzle for spraying flame retardant liquid to the corrugated board, the door frame 3 comprises a pair of vertical rods 5 extending in the vertical direction and a mandril 4 horizontally fixed at the upper end of the vertical rods 5, a through groove 41 is arranged on the top rod 4 along the vertical direction, the door panel 6 is inserted in the through groove 41 in a sliding way, install the drive assembly 8 that is used for driving door plant 6 to go up and down on the ejector pin 4, drive assembly 8 provides the power that door plant 6 goes up and down, and logical groove 41 limits door plant 6 and goes up and down in vertical direction, realizes the automatic of door plant 6 and opens and shuts.
As shown in fig. 3 and 4, mounting grooves 61 are formed in the lower ends of the two sides of the door panel 6 in the width direction, an extrusion spring 63 and a sliding pin 62 are mounted in the mounting grooves 61, the extrusion spring 63 has a tendency of pushing the sliding to slide outward of the mounting grooves 61, and a limit plate 66 is inserted in the lower end of the door panel 6 and at the two ends of the door panel 6 in the width direction in a sliding manner along the vertical direction, a horizontal baffle is fixed at the upper end of the limit plate 66, a first sliding groove matched with the limit plate 66 is formed in the door panel 6, a second sliding groove matched with the baffle is extended at the upper end of the first sliding groove, a bumper 661 is fixedly connected between the lower ends of the limit plates 66, and the limit plate 66 passes through the mounting grooves 61 and is formed in the base 2 with a storage groove 21;
when the limiting plate 66 naturally bears gravity, the limiting plate 66 blocks the end of the sliding pin 62 facing the upright 5, the end of the limiting plate 66 abutting against the sliding pin 62 is coated with lubricating oil, a through hole 662 is formed in the limiting plate 66, and when the door panel 6 descends, if the door panel 6 is normally closed, the bumper 661 is embedded in the accommodating groove 21; if the arm is not withdrawn from in time, collision between bumper 661 and the arm, the arm promotes bumper 661 and drives limiting plate 66 upwards to slide, the very big sliding friction who has reduced between sliding pin 62 and the limiting plate 66 of lubricating oil, make through-hole 662 on the limiting plate 66 align with sliding pin 62, extrusion spring 63 promotes sliding pin 62 butt on pole setting 5 fast, frictional force between sliding pin 62 and the pole setting 5 makes door plant 6 stop continuing to descend, and then avoid the arm to be pressed from both sides the problem of hindering, promote the security when overhauing or adjusting the corrugated board position for the first time.
As shown in fig. 3 and 4, a slideway 51 is formed at an opposite end between the vertical rods 5, the slideway 51 extends in the vertical direction, two sides of the door panel 6 in the width direction are slidably embedded in the slideway 51, the slideway 51 further defines the sliding direction of the door panel 6, and triangular grooves 52 are formed in the inner wall of the slideway 51 opposite to the mounting groove 61 at intervals in the vertical direction, wherein a triangular block 621 is fixed on the sliding pin 62; the chute 51 makes the notch of mounting groove 61 align with triangular groove 52, and when extrusion spring 63 promoted slide pin 62 and moved, the triangular fixture block 621 of slide pin 62 tip was inlayed and is located in triangular groove 52, and the cooperation increases the stability that locking door plant 6 removed between triangular groove 52 and the triangular fixture block 621, and then staff's security when promoting the protection operation.
As shown in fig. 3 and 4, the driving assembly 8 on the top bar 4 includes a driving motor 81 and a driving shaft 82 coaxially fixed at the rotating end of the driving motor 81, a rack 69 is installed at the back side of the door panel 6 and at the two ends in the width direction, the rack 69 extends in the vertical direction, and a pair of driving gears 83 are coaxially fixed on the driving shaft 82, and the driving gears 83 are respectively engaged with the rack 69; when the driving motor 81 rotates, the driving gear 83 drives the rack 69 to move, and thus the door panel 6 is lifted. And the fixed slot 71 has been seted up at the dorsal part of door plant 6, and rack 69 inlays and locates in fixed slot 71, still inlays in fixed slot 71 and is equipped with push spring 70, and push spring 70 supports rack 69 for stable meshing transmission between rack 69 and the gear, but when door plant 6 locking removal, the motor continues to rotate, and drive gear 83 promotes rack 69 and compresses push spring 70, and then avoids rack 69 card dead drive gear 83 to cause the motor damage.
As shown in fig. 6, the second chute communicates with the fixed groove 71, the caulking groove 691 is formed at the lower end of the rack 69, the guiding inclined plane 692 is formed in the caulking groove 691, the upper end of the limiting plate 66 is embedded in the caulking groove 691, the upper end of the limiting plate 66 is in sliding butt with the guiding inclined plane 692, when the bumper 661 pushes the limiting plate 66 to slide upwards, the limiting plate 66 is matched with the guiding inclined plane 692, the rack 69 slides towards the fixed groove 71, separation of the rack 69 and the driving gear 83 is achieved, thrust generated to the door panel 6 due to matching between the driving gear 83 and the rack 69 is further reduced, and the purpose of protecting the motor is achieved while the stability of locking of the door panel 6 is improved.
As shown in fig. 3 and 4, a communication groove 6841 communicating with the installation groove 61 is formed in the front side of the door panel 6, the communication groove 6841 extends in the width direction of the door panel 6, a support rod 72 is embedded in the communication groove 6841, the support rod 72 extends in the width direction of the door panel 6, support plates 73 are fixed at both ends of the support rod 72, the support plates 73 respectively abut against one ends of the pressing springs 63 far away from the sliding pins 62, so that the pressing springs 63 stably provide power for the sliding pins 62, the support rod 72 comprises an outer rod 721 and an inner rod 722, the inner rod 722 is slidably inserted into the outer rod 721, a locking bolt 723 is threadedly connected to the outer rod 721, and one end of the locking bolt 723 passes through the inner rod 722; when the door panel 6 needs to be unlocked, the locking bolt 723 is taken out, the inner pipe slides into the outer rod 721, the pushing force of the extrusion spring 63 on the sliding pin 62 is released, the sliding pin 62 is moved to enter the mounting groove 61 again, and the lifting control of the door panel 6 is realized again.
The implementation principle of the embodiment is as follows:
when door plant 6 descends, if the arm does not withdraw in time, collide between bumper 661 and the arm, the arm promotes bumper 661 and drives limiting plate 66 upwards to slide, make through-hole 662 on the limiting plate 66 align with sliding pin 62, extrusion spring 63 promotes sliding pin 62 fast, triangle fixture block 621 inlays and locates in triangular groove 52, make door plant 6 stop continuing to descend, and then avoid the arm to be pressed from both sides the problem of hindering, limiting plate 66 promotes rack 69 and drive gear 83 separation simultaneously, the protection motor, promote the security when pulling corrugated container board or overhauing.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (5)
1. A production process of double-layer flame-retardant composite corrugated paper is characterized by comprising the following steps: the method comprises the following steps:
preparing materials: a roll of corrugated paper, two rolls of boxboard paper, a glue spreader and a liquid sprayer;
gluing: conveying corrugated paper to a gluing machine, and spraying viscose on two surfaces of the corrugated paper;
bonding: conveying the two rolls of the cardboard paper and the corrugated paper in parallel, wherein the cardboard paper is respectively positioned at two sides of the corrugated paper, and extruding the cardboard paper to be attached to the corrugated paper to form a corrugated board;
coating: conveying the corrugated board into a liquid spraying machine, and spraying flame retardant liquid to two sides of the corrugated board;
and (3) drying: drying the corrugated board;
cutting: longitudinally cutting and transversely cutting the corrugated board;
off-line of finished products;
the liquid spraying machine comprises a base (2) and a liquid spraying chamber (1) arranged on the base (2), wherein an inlet (11) and an outlet are formed in two ends of the liquid spraying chamber (1) in the length direction respectively, liquid spraying ports are formed in two ends of the liquid spraying chamber (1) in the vertical direction, and a door frame (3) and a door plate (6) sliding in the vertical direction are arranged on one side of the liquid spraying chamber (1) in the width direction; the door frame (3) comprises a push rod (4) and a set of symmetrical vertical rods (5), the vertical rods (5) are arranged along the vertical direction, the push rod (4) extends along the horizontal direction and is fixed at the upper ends of the vertical rods (5), the push rod (4) is provided with a through groove (41) along the vertical direction, the door plate (6) is embedded in the through groove (41) along the vertical direction, the push rod (4) is provided with a driving door plate (6) lifting driving component (8), one end, opposite to the vertical rods (5), is provided with a slide way (51), two opposite ends of the door plate (6) are slidably embedded in the slide way (51), the slide way (51) extends along the vertical direction, one end, facing the slide way (51), of the door plate (6) is provided with a mounting groove (61), the mounting groove (61) is slidably provided with a sliding pin (62) and an extrusion spring (63) pushing the sliding pin (62) to extrude on the vertical rods (5), the lower extreme of door plant (6) is followed vertical direction slip and is pegged graft and have a set of symmetry to be used for the butt in limiting plate (66) of the one end of sliding pin (62) orientation pole setting (5), offer through-hole (662) that are used for through sliding pin (62) on limiting plate (66), just the lower extreme of limiting plate (66) extends to door plant (6), be connected with the bumper bar between the lower extreme of limiting plate (66), set up on base (2) and accomodate groove (21) of taking in bumper (661).
2. The production process of the double-layer flame-retardant composite corrugated paper as claimed in claim 1, wherein the production process comprises the following steps: door plant (6) dorsal part just is located its horizontal direction's relative both ends and is provided with rack (69), rack (69) extend along vertical direction and set up, drive assembly (8) are fixed in drive motor (81) on ejector pin (4) and coaxial drive shaft (82) of drive motor (81) rotation end including being fixed in, coaxial drive gear (83) that is provided with on drive shaft (82), the meshing sets up between drive gear (83) and rack (69).
3. The production process of the double-layer flame-retardant composite corrugated paper as claimed in claim 2, wherein the production process comprises the following steps: the back side of the door plate (6) is provided with a fixing groove (71) for embedding the rack (69), a pushing spring (70) is arranged in the fixing groove (71), and the pushing spring (70) has a tendency of pushing the rack (69) to move towards the gear.
4. The production process of the double-layer flame-retardant composite corrugated paper as claimed in claim 3, wherein the production process comprises the following steps: caulking groove (691) have been seted up to the lower extreme of rack (69), be provided with guide inclined plane (692) in caulking groove (691), limiting plate (66) slip butt in guide inclined plane (692), when limiting plate (66) upwards slides, rack (69) are to the direction removal that the extrusion pushed spring (70).
5. The production process of the double-layer flame-retardant composite corrugated paper as claimed in claim 1, wherein the production process comprises the following steps: the door plate is characterized in that a communicating groove (68) used for communicating with the mounting groove (61) is formed in the front side of the door plate (6), a supporting rod (72) is arranged in the communicating groove (68), supporting plates (73) abutting against the extrusion spring (63) are arranged at two ends of the supporting rod (72), the supporting rod (72) comprises an inner rod (722) and an outer rod (721), the inner rod (722) is inserted into the outer rod (721) in a sliding mode, and a locking bolt (723) for extruding the inner rod (722) is connected to the outer rod (721) in a threaded mode.
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| CN202010046342.2A CN111038005B (en) | 2020-01-16 | 2020-01-16 | Production process of double-layer flame-retardant composite corrugated paper |
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| CN111687435A (en) * | 2020-06-24 | 2020-09-22 | 苏州艾卓精密机械有限公司 | Processing equipment of microstrip lock pin |
| CN112113402A (en) * | 2020-09-24 | 2020-12-22 | 无锡先导智能装备股份有限公司 | Drying apparatus |
| CN113651025B (en) * | 2021-07-01 | 2023-03-21 | 首钢京唐钢铁联合有限责任公司 | Marine material transportation device |
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| CN205477212U (en) * | 2016-04-06 | 2016-08-17 | 晋江佶邦机械技术服务有限公司 | Prevent pressing from both sides door |
| CN107042674A (en) * | 2017-04-20 | 2017-08-15 | 深圳朗晖展示有限公司 | A kind of fire-retarded corrugated paper plate and its manufacturing process |
| CN110356050A (en) * | 2018-04-11 | 2019-10-22 | 南京市高淳包装材料厂 | A kind of corrugated board production method |
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