WO2020085587A1 - Appareil de fabrication en continu de mousse en brins de polyuréthane - Google Patents

Appareil de fabrication en continu de mousse en brins de polyuréthane Download PDF

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Publication number
WO2020085587A1
WO2020085587A1 PCT/KR2019/002720 KR2019002720W WO2020085587A1 WO 2020085587 A1 WO2020085587 A1 WO 2020085587A1 KR 2019002720 W KR2019002720 W KR 2019002720W WO 2020085587 A1 WO2020085587 A1 WO 2020085587A1
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WO
WIPO (PCT)
Prior art keywords
foam
coupled
polyurethane
angle
guide member
Prior art date
Application number
PCT/KR2019/002720
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English (en)
Korean (ko)
Inventor
정용채
Original Assignee
(주)디유티코리아
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Filing date
Publication date
Application filed by (주)디유티코리아 filed Critical (주)디유티코리아
Publication of WO2020085587A1 publication Critical patent/WO2020085587A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/35—Component parts; Details or accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
    • B29C44/28—Expanding the moulding material on continuous moving surfaces without restricting the upwards growth of the foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2075/00—Use of PU, i.e. polyureas or polyurethanes or derivatives thereof, as moulding material

Definitions

  • the present invention relates to an apparatus for continuously producing a strand foam of polyurethane, and more specifically, the amount and density of foam supplied during foaming to form a strand foam by applying a polyurethane reactive mixture on a rotating conveyor belt.
  • the guide part so that the height and angle can be adjusted according to the shape, the upper surface of the strand foam is formed by a simple operation so that the curved surface of the block foam is not formed on the upper surface of the strand foam, so that the closed foam is
  • It relates to a continuous production device of a strand foam of polyurethane, characterized in that the amount of generation can be reduced.
  • Polyurethane foam has a structure of [-NHCOO-] n synthesized by dissipating high temperature heat under appropriate conditions by adding a blowing agent to a mixture of alcohol and isocyanate having an active hydroxyl group (-OH).
  • a blowing agent to a mixture of alcohol and isocyanate having an active hydroxyl group (-OH).
  • -OH active hydroxyl group
  • Polyurethane foam As shown in Figure 1 according to the molding method, the raw material (1) is a paper (4) continuously flowing over the conveyor belt (3) through a foam injector (mixing head) (4) ) By discharging the foaming liquid (5) on top, the foam (6) is coated with a mold release agent inside the pre-heated mold and the conventional Crown-Block Process, and the foaming liquid is injected into the mold through the foam injector. There is a molded foam process, etc., after which foaming is performed.
  • the entire surface should be in a block shape of a smooth flat surface, as shown in FIG.
  • the upper surface of the foam 6 is formed with a convexly curved upper surface like a crown shape, there is a problem in that economical efficiency is deteriorated because there are more parts that need to remove the convexly curved curved surface. .
  • a device for continuous production of a foam block of a vertical cross-section of US Patent No. 4,120,626 (registered on October 17, 1978) is a charging device 4 as shown in FIG.
  • a counterweight (13) connected to a plurality of cables (12)
  • a device for preventing the upper surface of the foaming agent block 8 from convexly rising by using a plurality of covers 11 mounted on the plurality of connecting devices 10 is known, it is complicated in the case of the device.
  • the plurality of covers 11 is not operated, there is a fear that the upper surface is formed of a block foam formed in a crown shape.
  • Japanese Patent Registration No. 5069566 (Registration on August 24, 2012) Method and apparatus for manufacturing polyurethane block foam, as shown in Figure 5, the polyurethane reaction mixture in the mixer (1) and the discharge path (2) and the gap Apparatus for forming a polyurethane block foam by applying to the substrate paper 3 on the top of the application plate 5 rotating through the (gab) 7, the ratio of the gap gab 7 to the length b It is characterized by adjusting the range to a specific value, but in the case of the above device, even if the ratio of the length b of the gap (gab) 7 is adjusted, the ratio is different depending on the characteristics of the mixture, so that the adjustment is difficult. In addition, even if the adjustment was made, there was a fear that the block foam formed with the upper surface in the shape of a crown was formed.
  • the present invention is a method for solving the problems as described above, when foaming to form a strand foam by applying a polyurethane-reactive mixture on a rotating conveyor belt, the height and height according to the amount and density of the supplied foam liquid
  • the guide part so that the angle can be adjusted, the upper surface of the strand foam is formed by a simple operation to form a flat surface, so that the curved surface of the block shape is not formed on the upper surface of the strand foam, thereby reducing the amount of generated waste foam.
  • An object of the present invention is to provide an apparatus for continuously producing a strand foam of polyurethane characterized by being present.
  • the raw material is mixed, the supply unit 200 having a mixing head 210 for discharging the foaming liquid, and is discharged through the mixing head 210 Strand of polyurethane comprising a transfer unit 300 for transferring the foaming liquid, and a guide portion 10 for pressing the upper portion of the foaming liquid discharged through the mixing head 210 to be transferred by the transfer unit 300
  • the guide part 10 includes a guide member 20 for pressing an upper portion of the foamed liquid discharged through the mixing head 210; It is connected to the guide member 20, and an angle adjusting member 30 for adjusting the angle of the guide member 20; It is fixed to the frame 110, characterized in that it comprises a movable member 40 for moving the angle adjustment member 30 up and down.
  • the angle adjusting member 30 includes a rotating rod 32 in the longitudinal direction rotated by an actuator 31; A rotating link 33, which is rotatably coupled on one side of the rotating rod 32; A plurality of adjustment bolts 34, one side of which is coupled on the rotation link 33 and whose length is adjusted by forward or reverse rotation; One side is coupled to the other side of the adjustment bolt 34, it characterized in that it comprises a fixture 35 to which the guide member 20 is fixed to the other side.
  • the plurality of adjustment bolts 34 are combined to have different lengths on the rotation link 33, which is coupled to the lower portion of the rotation link 33
  • the adjustment bolt 34 is characterized in that it is formed to have a shorter length than the adjustment bolt 34 coupled to the upper portion.
  • the guide member 20 is provided in plural so as to be coupled to a fixture 35 coupled to a plurality of adjustment bolts 34 of the angle adjustment member 30. It is configured, the adjacent guide member 20 is connected by a connecting member 21 is characterized in that the angle is adjusted by the rotation of the rotation link 33 or the length adjustment of the adjustment bolt 34.
  • the guide member 20 includes a coupling hole 22 coupled to a fixture 35 of the angle adjusting member 30; It is characterized in that it comprises a pressing plate 23 for pressing the upper portion of the foamed liquid discharged through the mixing head 210, is coupled to the coupling port (22).
  • the movable member 40 is fixed to the frame 41 is formed on the frame 110 is formed spaced apart;
  • a jack screw shaft 43 connected to the fixture 41 through a bearing and having a handle 42 at one end thereof;
  • a jack screw 44 formed on the jack screw shaft 43;
  • a coupling plate 45 coupled to a lower portion of the jack screw 44; It is characterized in that it comprises a coupling profile 46 that is coupled to the lower portion of the coupling plate 45, the angle adjusting member 30 is coupled.
  • a polyurethane reactive mixture is applied on a rotating conveyor belt, and when foaming to form a strand foam, the height and the height of the foam are supplied.
  • the guide part so that the angle can be adjusted, the upper surface of the strand foam is formed by a simple operation to form a flat surface, so that it is suitable for use in block foams such as mattresses, mats, or architectural panels by cutting the molded foam. It has the effect that all the six sides are formed into a smooth flat shape.
  • the upper surface of the foam 6 is convexly raised to the top like a crown shape. Since the shape of is not formed, there is no part to remove the curved surface rising convexly to the top, so it is highly economical.
  • FIG. 1 is a perspective view schematically showing an apparatus for continuously manufacturing a strand foam of a conventional polyurethane
  • Figure 2 is a cross-sectional view taken along the plane A-A 'of Figure 1
  • 3 to 5 is a schematic view showing a conventional apparatus for manufacturing a continuous continuous foam of polyurethane
  • Figure 6 is a perspective view of a continuous production apparatus for a strand foam of polyurethane according to a preferred embodiment of the present invention
  • FIG. 7 is a side view of a continuous manufacturing apparatus for a strand foam of polyurethane according to a preferred embodiment of the present invention.
  • FIG. 8 is a perspective view of a guide portion in a continuous manufacturing apparatus for a strand foam of polyurethane according to a preferred embodiment of the present invention
  • FIG. 9 is an exploded perspective view of the guide portion in the continuous manufacturing apparatus of the strand foam of polyurethane according to the preferred embodiment of the present invention.
  • Figure 10 is a side view of the guide portion in the continuous manufacturing apparatus of a strand foam of polyurethane according to a preferred embodiment of the present invention.
  • FIG. 11 is a view showing the adjustment bolt of the angle adjustment member in the continuous manufacturing apparatus of a strand foam of polyurethane according to a preferred embodiment of the present invention.
  • the continuous manufacturing apparatus 100 of the polyurethane foam is provided with a mixing head 210 for mixing the raw material, and discharging the foaming liquid
  • the supply unit 200, the transfer unit 300 for transferring the foamed liquid discharged through the mixing head 210, and the upper portion of the foamed liquid discharged through the mixing head 210 to be pressed to be transferred by the transfer unit 300 It comprises a guide portion (10).
  • the supply part 200, the transfer part 300, and the guide part 10 are installed on the frame 110 installed on the ground, and the frame 110 has one vertical bar and one horizontal bar combined with each other. Let's make the frame.
  • the supply unit 200 is a release paper supply unit wound on a plurality of rollers 231 installed on the frame 110 and the foaming liquid supply unit 220 for mixing the raw materials and discharging the foaming liquid through the mixing head 210 (230).
  • the release paper supply unit 230 includes a first release paper supply unit 240 and a first release paper supply unit 240 through which the foaming liquid discharged through the mixing head 210 of the foaming liquid supply unit 220 is discharged to the upper portion and transferred to the transfer unit 300.
  • 240 is installed on the upper side, the second release paper supply unit 250 to be in close contact with the guide member 20 of the guide portion 10 to press the upper portion of the foaming liquid, and the foaming liquid transferred by the conveying portion 300 It comprises a side release paper supply unit 260 formed to surround the side.
  • the conveying part 300 is for conveying the foamed foamed liquid to the upper surface of the second release paper supply part 250 and includes a conveyor belt 310 installed on the frame 110.
  • the foaming liquid is a mixed pressure liquid discharged through the mixing head 210, and it is a foam that is formed by being solidified in the process of transferring the mixed pressure liquid. Those in the field will know.
  • the guide portion 10 is of a block shape on the upper surface of the foam formed by the foaming liquid is hardened when transported by the transfer unit 300 by pressing the upper portion of the foamed liquid discharged through the mixing head 210 of the supply unit 200
  • the guide member 20 for pressing the upper portion of the foamed liquid discharged through the mixing head 210, and the guide member 20 is connected, and adjusts the angle of the guide member 20 It comprises an angle adjustment member 30 for fixing, and fixed to the frame 110, the movable member 40 for moving the angle adjustment member 30 up and down.
  • the guide member 20 is made of a rectangular plate shape, a coupling plate coupled to the pressing plate 23 for pressing the upper portion of the foaming liquid, the pressing plate 23, and the fixture 35 of the angle adjusting member 30 (22).
  • the guide member 20 is composed of a plurality of adjacent guide member 20 is connected by a connecting member 21, the rotation link 33 of the angle adjustment member 30 and the adjustment bolt of the angle adjustment member 30 The angle is adjusted by adjusting the length of (34).
  • the connecting member 21 is composed of a hinge, but this is only one embodiment and may be connected in various ways.
  • the angle adjusting member 30 is for adjusting the angle of the guide member 20, and the rotating rod 32 in the longitudinal direction rotated by the actuator 31, and one side is rotatably coupled on the rotating rod 32 Link 33, one side is coupled on the rotational link 33, a plurality of adjustment bolts 34 whose length is adjusted by forward or reverse rotation, and one side is coupled to the other side of the adjustment bolt 34, It comprises a fastener 35 to which the guide member 20 is fixed on the other side.
  • the actuator 31 is composed of a cylinder, and is installed on a fixed profile 311 fixed to the coupling profile 46 of the movable member 40, and a drive link coupled to the end of the piston rod of the actuator 31 312 and the rotating rod 32 are coupled, the rotating rod 32 is rotated by the driving of the actuator 31.
  • the rotating rod 32 is coupled to the actuator 31 on the center side, the rotating rod 32 is rotated by the driving of the actuator 31. Then, the rotating rod 32 is fixed to the fastener 36 having bearings at both ends, and the fastener 36 is fixed to the coupling profile 46 of the movable member 40.
  • Rotating link 33 is one side is coupled to both ends of the rotating rod 32, the other side is formed in the diagonal direction of the upper side.
  • the adjustment bolt 34 is composed of a fastener 342 that is screwed on both sides of the body 341 and the body 341 as shown in FIG. 11, and when the body 341 is rotated to one side, the fastener 342 ) Moves to the outside, and when the body 341 is rotated to the other side, the fastener 342 is configured to move inward.
  • the adjustment bolt 34 is adjusted in length by rotation of the body 341 so that the angle of the pressing plate 23 of the guide member 20 can be adjusted.
  • the plurality of adjustment bolts 34 are composed of three, and are configured to be coupled to the lower end, the middle end, and the upper end of the rotation link 33.
  • the adjustment bolt 34a coupled to the lower end of the rotation link 33 has a shorter length than the adjustment bolt 34b coupled to the middle section, and the adjustment bolt 34b coupled to the middle section is coupled to the upper section It is configured to have a shorter length than the adjustment bolt (34c).
  • the angle of the guide member coupled to the angle adjusting member having such a configuration can be adjusted according to the amount and density of the foamed liquid discharged from the mixing head 210 of the supply unit 200, but preferably the angle adjusting member 30 )
  • the pressing plate 23 of the guide member 20 coupled to the adjustment bolt 34a coupled to the lower end of the link has an angle of 5 ° with respect to the horizontal direction, and is coupled to the adjustment bolt 34b coupled to the middle section
  • the pressing plate 23 of the guide member 20 has an angle of 30 ° with respect to the horizontal direction, and the pressing plate 23 of the guide member 20 coupled to the adjustment bolt 34c coupled to the upper end portion is 45 with respect to the horizontal direction. It is desirable to have an angle of °.
  • the movable member 40 is for moving the guide member 20 and the angle adjusting member 30 up and down according to the density of the foaming liquid and the amount of foaming, and a fixture 41 fixed on the frame 110,
  • a jack screw shaft 43 connected to a fixture 41 through a bearing and having a handle 42 formed at one end thereof, a jack screw 44 formed on the jack screw shaft 43, and a jack screw 44 ) Is coupled to the lower portion of the coupling plate 45, the coupling plate 45 is coupled, the angle adjustment member 30, the fastener of the coupling portion 46 is made to include.
  • the pressing plate 23 of the guide member 20 coupled to the lower end of the adjustment bolt 34 of the angle adjusting member 30 is connected to one side of the coupling profile 46 by the connecting member 21.
  • a polyurethane reactive mixture is coated on a rotating conveyor belt, and when foamed to form a strand foam, the height and height are determined according to the amount and density of the supplied foam liquid.
  • the guide part so that the angle can be adjusted, the upper surface of the strand foam is formed by a simple operation to form a flat surface, so that it is suitable for use in block foams such as mattresses, mats, or architectural panels by cutting the molded foam. It has the effect that all the six sides are formed into a smooth flat shape.
  • the upper surface of the foam 6 is convexly raised to the top like a crown shape. Since the shape of is not formed, there is no part to remove the curved surface rising convexly to the top, so it is highly economical.
  • the raw material is mixed, the supply unit 200 having a mixing head 210 for discharging the foaming liquid, and is discharged through the mixing head 210 Strand of polyurethane comprising a transfer unit 300 for transferring the foaming liquid, and a guide portion 10 for pressing the upper portion of the foaming liquid discharged through the mixing head 210 to be transferred by the transfer unit 300
  • the guide part 10 includes a guide member 20 for pressing an upper portion of the foamed liquid discharged through the mixing head 210; It is connected to the guide member 20, and an angle adjusting member 30 for adjusting the angle of the guide member 20; It is fixed to the frame 110, and includes an up-and-down moving member 40 for moving the angle adjustment member 30 up and down is in the form for the practice of the invention.
  • the angle adjusting member 30 includes a rotating rod 32 in the longitudinal direction rotated by an actuator 31; A rotating link 33, which is rotatably coupled on one side of the rotating rod 32; A plurality of adjustment bolts 34, one side of which is coupled on the rotation link 33 and whose length is adjusted by forward or reverse rotation; One side is coupled to the other side of the adjustment bolt 34, the other side comprises a fixture 35 to which the guide member 20 is fixed to form a form for the practice of the invention.
  • the plurality of adjustment bolts 34 are combined to have different lengths on the rotation link 33, which is coupled to the lower portion of the rotation link 33
  • the adjustment bolt 34 is formed to have a shorter length than the adjustment bolt 34 coupled to the upper portion of the embodiment.
  • the guide member 20 is provided in plural so as to be coupled to a fixture 35 coupled to a plurality of adjustment bolts 34 of the angle adjustment member 30. It is configured, the adjacent guide member 20 is connected by a connecting member 21 to practice the invention that the angle is adjusted by the rotation of the rotation link 33 or the length adjustment of the adjustment bolt 34 It should be made for.
  • the guide member 20 includes a coupling hole 22 coupled to a fixture 35 of the angle adjusting member 30; In the form for the practice of the invention, it includes a pressing plate 23 for pressing the upper portion of the foaming liquid discharged through the mixing head 210 and coupled to the coupling port 22.
  • the movable member 40 is fixed to the frame 41 is formed on the frame 110 is formed spaced apart;
  • a jack screw shaft 43 connected to the fixture 41 through a bearing and having a handle 42 at one end thereof;
  • a jack screw 44 formed on the jack screw shaft 43;
  • a coupling plate 45 coupled to a lower portion of the jack screw 44; It is to be coupled to the lower portion of the coupling plate 45, the angle adjustment member 30 includes a coupling profile 46 to be coupled to form for the practice of the invention.
  • a polyurethane reactive mixture is coated on a rotating conveyor belt, and when foamed to form a strand foam, the height and height are determined according to the amount and density of the supplied foam liquid.
  • the guide part so that the angle can be adjusted, the upper surface of the strand foam is formed by a simple operation to form a flat surface, so that it is suitable for use in block foams such as mattresses, mats, or architectural panels by cutting the molded foam. It has the effect that all the six sides are formed into a smooth flat shape.
  • the upper surface of the foam 6 is convexly raised to the top like a crown shape. Since the shape of is not formed, it is expected to be widely used in the industry in that it has a high economical effect because there is no part to remove the convexly raised curved surface.

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  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)

Abstract

La présente invention comprend une partie de guidage de telle sorte que sa hauteur et son angle peuvent être ajustés en fonction de la quantité et de la densité d'une solution moussante à fournir lorsqu'un moussage est effectué pour mouler une mousse en brins par revêtement d'un mélange réactif de polyuréthane sur une bande transporteuse rotative, et réalise ainsi un moulage par une opération simple de telle sorte que la surface supérieure de la mousse en brins est plate, empêchant ainsi une surface incurvée de façon convexe d'être formée sur la surface supérieure de la mousse en brins, de façon à réduire la quantité de déchets de mousse à générer. Par conséquent, une forme de surface incurvée vers le haut convexe, telle qu'une forme de couronne formée sur la surface supérieure d'une mousse (6), comme illustré sur la figure 2, n'est pas formée lorsqu'une mousse en blocs est moulée au moyen d'un appareil classique pour fabriquer en continu une mousse en brins de polyuréthane, et ainsi la rentabilité est élevée étant donné qu'il n'y a pas de régions d'où une surface incurvée vers le haut convexe doit être retirée.
PCT/KR2019/002720 2018-10-22 2019-03-08 Appareil de fabrication en continu de mousse en brins de polyuréthane WO2020085587A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180126153A KR102172142B1 (ko) 2018-10-22 2018-10-22 폴리우레탄의 스트랜드 발포체의 연속 제조장치
KR10-2018-0126153 2018-10-22

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WO2020085587A1 true WO2020085587A1 (fr) 2020-04-30

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WO (1) WO2020085587A1 (fr)

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EP4257323A1 (fr) * 2022-04-08 2023-10-11 Evonik Operations GmbH Système et procédé de détermination de paramètres pour la production de mousse
EP4257324A1 (fr) * 2022-04-08 2023-10-11 Evonik Operations GmbH Système et procédé de réglage automatique de paramètres pour la production de mousse
CN117359855A (zh) * 2023-10-24 2024-01-09 苏州瀚铭电子材料有限公司 一种涂布均匀的聚氨酯泡棉涂布设备

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EP4257323A1 (fr) * 2022-04-08 2023-10-11 Evonik Operations GmbH Système et procédé de détermination de paramètres pour la production de mousse
EP4257324A1 (fr) * 2022-04-08 2023-10-11 Evonik Operations GmbH Système et procédé de réglage automatique de paramètres pour la production de mousse
WO2023194175A1 (fr) * 2022-04-08 2023-10-12 Evonik Operations Gmbh Système et procédé de détermination de paramètres pour la production de mousse
WO2023194176A1 (fr) * 2022-04-08 2023-10-12 Evonik Operations Gmbh Système et procédé de réglage automatique de paramètres pour la production de mousse
CN117359855A (zh) * 2023-10-24 2024-01-09 苏州瀚铭电子材料有限公司 一种涂布均匀的聚氨酯泡棉涂布设备
CN117359855B (zh) * 2023-10-24 2024-04-16 苏州瀚铭电子材料有限公司 一种涂布均匀的聚氨酯泡棉涂布设备

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