CN112873693A - Polyurethane insulation board foaming equipment and operation method thereof - Google Patents
Polyurethane insulation board foaming equipment and operation method thereof Download PDFInfo
- Publication number
- CN112873693A CN112873693A CN202110036695.9A CN202110036695A CN112873693A CN 112873693 A CN112873693 A CN 112873693A CN 202110036695 A CN202110036695 A CN 202110036695A CN 112873693 A CN112873693 A CN 112873693A
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- CN
- China
- Prior art keywords
- box
- sets
- insulation board
- polyurethane insulation
- workbin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005187 foaming Methods 0.000 title claims abstract description 55
- 238000009413 insulation Methods 0.000 title claims abstract description 26
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 26
- 239000004814 polyurethane Substances 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 62
- 238000001914 filtration Methods 0.000 claims abstract description 18
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 13
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 13
- 241001330002 Bambuseae Species 0.000 claims description 13
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 13
- 239000011425 bamboo Substances 0.000 claims description 13
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- 239000003351 stiffener Substances 0.000 claims description 2
- 239000006260 foam Substances 0.000 description 8
- 239000004088 foaming agent Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- 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
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B13/00—Conditioning or physical treatment of the material to be shaped
- B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
-
- 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
Abstract
The invention discloses polyurethane insulation board foaming equipment and an operation method thereof, and the polyurethane insulation board foaming equipment comprises a foaming machine body, wherein a box body is installed on the foaming machine body, a funnel-shaped material receiving bin is installed at the upper end of the box body, two material receiving boxes are inserted at the lower end of the box body, two groups of adjusting parts are arranged at the upper end of the box body, two groups of output ends of the two groups of adjusting parts are respectively provided with a plug connector, the output ends of the four groups of plug connectors penetrate through the box body and are respectively inserted with two ends of the two material receiving boxes, a filtering part is installed in an inner cavity of the box body and is connected with the box body through a. According to the polyurethane insulation board foaming equipment and the operation method thereof, the filtering piece and the supporting piece are arranged, materials can be greatly separated, the foaming efficiency is improved, the adjusting piece, the plug connector, the guide piece and the two material receiving boxes are arranged, the materials can be respectively guided into the two material receiving boxes through the guide piece, the material receiving boxes are convenient to disassemble and assemble, and the normal operation of the equipment is not influenced.
Description
Technical Field
The invention relates to the field of foam foaming equipment, in particular to polyurethane insulation board foaming equipment and an operation method thereof.
Background
A foaming machine, also known as a foam generator, is a device for making foam from an aqueous solution in which a foaming agent has reached a certain concentration. The foaming agent cannot automatically become foam, and the foaming agent must be mechanically acted by a foaming machine to become foam.
The existing polyurethane insulation board foaming equipment utilizes a foaming machine to foam, and due to the fact that the foaming efficiency is low due to the fact that raw materials are different in size, the problem is solved by the polyurethane insulation board foaming equipment and the operation method thereof.
Disclosure of Invention
The invention mainly aims to provide polyurethane insulation board foaming equipment and an operation method thereof, which can effectively solve the problems in the background technology.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a polyurethane insulation board foaming equipment, includes the foaming machine body, install the funnel type on the foaming machine body and connect the feed bin to the upper end of installing box and box, the lower extreme of box is pegged graft and is had two sets of workbins that connect, all install the plug connector on the two sets of output that the upper end of box was equipped with two sets of regulating parts and two sets of regulating parts, four groups the output of plug connector all runs through the box and pegs graft with two sets of both ends that connect the workbin respectively, the inner chamber of box is installed and is filtered piece and filter piece and pass through support piece and box fixed connection, the guide is installed to the inner chamber of.
Preferably, the regulating part includes adjusting screw and first spacing, adjusting screw's lower extreme is rotated with the upper end of box and is connected, first spacing cup joints fixedly through bearing and adjusting screw, the both ends that the screw thread cup jointed screwed pipe and screwed pipe on the adjusting screw are the symmetry and are equipped with the stiffener on two sets of L type poles and two sets of L type poles.
Preferably, the plug connector includes inserted bar and the spacing of second, the left end of inserted bar rotates and is equipped with movable rod and the slope of movable rod setting, the upper end of movable rod rotates with the lower extreme of L type pole to be connected, the inserted bar passes the ring that is equipped with on the spacing of second and runs through the lateral wall of box and with connect the workbin grafting, the bayonet joint of inserted bar sets up to frustum type structure.
Preferably, filter piece including filter screen section of thick bamboo, filter screen section of thick bamboo is the slope setting, install driving motor and driving motor's output shaft on filter screen section of thick bamboo's the right-hand member face and be located the spiral ejector pin of filter screen section of thick bamboo inner chamber and be connected, the upper end of filter screen section of thick bamboo is equipped with the inlet pipe, the funnel type connects the discharging pipe of feed bin to be located the inner chamber of inlet pipe.
Preferably, the support members are provided with four groups, and the four groups of support members are respectively fixedly arranged on two sides of the filter screen cylinder in pairs, each support member comprises a telescopic rod and a spring, and the springs are located in inner cavities of the telescopic rods.
Preferably, the guide piece includes the axis of rotation, the axis of rotation rotates the inner chamber that sets up at the box, install the deflector in the axis of rotation, the axis of rotation runs through one of box lateral wall and serves and install elasticity fastening pad and install the junction at axis of rotation and box.
Preferably, two sets of stop strips are symmetrically installed at the upper ends of the material receiving boxes, and a feeding port communicated with the inner cavity of the box body is formed in the foaming machine body.
An operation method of polyurethane insulation board foaming equipment comprises the following operation steps,
filtration separation operation
The work of control driving motor and foaming machine to in slowly adding the material at the uniform velocity funnel type connects the feed bin, through the cooperation of filter screen section of thick bamboo and rotatory spiral ejector tie, separate the material of not uniform size, and with large granule material propelling movement to connect the feed bin in, the material that the particle diameter reaches the requirement passes through the filter screen section of thick bamboo and gets into the foaming machine body and foam.
Discharge operation
When the too much material that connects in the workbin need be unloaded, the accessible rotates the guide and makes the deflector take place to rotate, can get into another empty workbin that connects with the material direction, and the rethread rotates adjusting screw for the screwed pipe drives L type pole downstream, thereby makes two sets of inserted bars outwards move simultaneously, and it is fixed to relieve the grafting to the workbin, can pour the material in the workbin, at this in-process, does not influence the normal operating of foaming machine.
Compared with the prior art, the invention has the following beneficial effects:
1. be equipped with and filter piece and support piece, material that the separation size is different to with large granule material propelling movement to connect the material box in, the material that the particle diameter reaches the requirement foams in passing through filter screen section of thick bamboo and getting into the foaming machine body, improves foaming efficiency.
2. Be equipped with regulating part, plug connector, guide and two sets of workbin that connect, the accessible guide is leading-in two sets of workbin that connect the material respectively to the cooperation through regulating part and plug connector is docked the workbin and is dismantled and install, does not influence the normal operation of equipment.
Drawings
FIG. 1 is a schematic view of the overall structure of a polyurethane insulation board foaming device of the invention;
FIG. 2 is a schematic structural diagram of an adjusting part and a plug connector of the polyurethane insulation board foaming device of the invention;
FIG. 3 is a schematic structural diagram of a section of a box body of the polyurethane insulation board foaming equipment;
FIG. 4 is a schematic structural view of a guide member of the polyurethane insulation board foaming device of the present invention;
FIG. 5 is a schematic view of a cross-sectional structure of a telescopic rod of the polyurethane insulation board foaming device.
In the figure: 1. a foaming machine body; 2. a box body; 3. a funnel-shaped material receiving bin; 4. a plug-in unit; 41. a second limiting frame; 42. inserting a rod; 43. a movable rod; 5. an adjustment member; 51. adjusting the screw rod; 52. a first limit bracket; 53. a bearing; 54. a threaded pipe; 55. a reinforcing bar; 56. an L-shaped rod; 6. a material receiving box; 7. a guide member; 71. a rotating shaft; 72. an elastic fastening pad; 73. a guide plate; 8. a filter member; 81. a filter screen cylinder; 82. a screw pusher bar; 83. a drive motor; 84. a feed pipe; 9. a support member; 91. a telescopic rod; 92. a spring; 10. a feed inlet; 11. a barrier strip.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-5, a polyurethane insulation board foaming equipment, including foaming machine body 1, the funnel type is installed to the upper end that installs box 2 and box 2 on foaming machine body 1 and connects feed bin 3, the lower extreme of box 2 is pegged graft and is had two sets of workbin 6 that connect, all install plug connector 4 on the two sets of output that box 2's upper end was equipped with two sets of regulating part 5 and two sets of regulating part 5, the output of four sets of plug connector 4 all runs through box 2 and pegs graft with two sets of both ends that connect workbin 6 respectively, filter piece 8 and pass through support piece 9 and box 2 fixed connection are installed to the inner chamber of box 2, guide 7 is installed to the inner chamber of box 2.
The adjusting part 5 comprises an adjusting screw 51 and a first limiting frame 52, the lower end of the adjusting screw 51 is rotatably connected with the upper end of the box body 2, the first limiting frame 52 is fixedly sleeved with the adjusting screw 51 through a bearing 53, a threaded pipe 54 is sleeved on the adjusting screw 51 in a threaded manner, two groups of L-shaped rods 56 are symmetrically arranged at two ends of the threaded pipe 54, reinforcing rods 55 are arranged on the two groups of L-shaped rods 56, the plug connector 4 comprises a plug rod 42 and a second limiting frame 41, a movable rod 43 is rotatably arranged at the left end of the plug rod 42, the movable rod 43 is obliquely arranged, the upper end of the movable rod 43 is rotatably connected with the lower end of the L-shaped rod 56, the plug rod 42 penetrates through a circular ring arranged on the second limiting frame 41, penetrates through the side wall of the box body 2 and is connected with the material receiving box 6 in an inserting manner, the inserting head of the plug rod 42 is of a frustum-shaped structure, the two groups of L-shaped rods 56, therefore, the two groups of the inserting rods 42 move outwards simultaneously, the insertion and fixation of the material receiving box 6 is released, the inserting rods rotate reversely, and the two groups of the inserting rods 42 and the material receiving box 6 can be inserted and fixed.
The filtering element 8 comprises a filtering net cylinder 81, the filtering net cylinder 81 is arranged in an inclined manner, a driving motor 83 is arranged on the right end surface of the filtering net cylinder 81, an output shaft of the driving motor 83 is connected with a spiral material pushing rod 82 positioned in the inner cavity of the filtering net cylinder 81, a material feeding pipe 84 is arranged at the upper end of the filtering net cylinder 81, a discharging pipe of the funnel-shaped material receiving bin 3 is positioned in the inner cavity of the material feeding pipe 84, four groups of supporting elements 9 are arranged on the four groups of supporting elements 9, the four groups of supporting elements 9 are respectively and fixedly arranged on two sides of the filtering net cylinder 81 in a pairwise manner, each supporting element 9 comprises a telescopic rod 91 and a spring 92, the spring 92 is positioned in the inner cavity of the telescopic rod 91, materials with different sizes are separated through the matching of the filtering net cylinder 81 and the rotary spiral material pushing rod 82, large-particle materials are pushed into the material receiving bin 6, the materials with the required particle size, the filter screen cylinder 81 can shake up and down by matching with a spring 92 which can enhance the vibration amplitude, so that the blanking is convenient.
Two groups of stop strips 11 are symmetrically arranged at the upper ends of the two groups of material receiving boxes 6, and a feeding hole 10 communicated with the inner cavity of the box body 2 is arranged on the foaming machine body 1.
An operation method of polyurethane insulation board foaming equipment comprises the following operation steps,
filtration separation operation
The driving motor 83 and the foaming machine are controlled to work, materials are slowly added into the funnel-shaped material receiving bin 3 at a constant speed, the materials with different sizes are separated through the matching of the filter screen cylinder 81 and the rotary spiral material pushing rod 82, large-particle materials are pushed into the material receiving bin 6, and the materials with the particle size meeting the requirement pass through the filter screen cylinder 81 and enter the foaming machine body 1 to be foamed.
Discharge operation
When the materials in the material receiving box 6 need to be unloaded excessively, the guide plate 73 can be rotated by rotating the guide piece 7, the materials can be guided to enter another group of empty material receiving boxes 6, and then the threaded pipe 54 drives the L-shaped rods 56 to move downwards by rotating the adjusting screw rod 51, so that the two groups of insertion rods 42 move outwards simultaneously, the insertion and the fixation of the material receiving boxes 6 are removed, the materials in the material receiving boxes 6 can be poured out, and the normal operation of the foaming machine is not influenced in the process.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. The utility model provides a polyurethane insulation board foaming equipment, includes foaming machine body (1), its characterized in that: install the funnel type on foaming machine body (1) and connect feed bin (3) in the upper end of installing box (2) and box (2), the lower extreme of box (2) is pegged graft and is had two sets of workbin (6) that connect, the upper end of box (2) is equipped with all to install on two sets of output of two sets of regulating part (5) and two sets of regulating part (5) plug connector (4), four groups the output of plug connector (4) all runs through box (2) and pegs graft with two sets of both ends that connect workbin (6) respectively, the inner chamber of box (2) is installed and is filtered piece (8) and filter piece (8) through support piece (9) and box (2) fixed connection, guide (7) are installed to the inner chamber of box (2).
2. The polyurethane insulation board foaming device according to claim 1, wherein: adjusting part (5) include adjusting screw (51) and first spacing (52), the lower extreme of adjusting screw (51) rotates with the upper end of box (2) to be connected, first spacing (52) cup joint fixedly through bearing (53) and adjusting screw (51), the both ends that threaded pipe (54) and threaded pipe (54) were cup jointed to the upper thread of adjusting screw (51) are the symmetry and are equipped with stiffener (55) on two sets of L type pole (56) and two sets of L type pole (56).
3. The polyurethane insulation board foaming device according to claim 1, wherein: plug connector (4) are including inserted bar (42) and second spacing (41), the left end of inserted bar (42) is rotated and is equipped with movable rod (43) and movable rod (43) slope setting, the upper end of movable rod (43) is rotated with the lower extreme of L type pole (56) and is connected, the ring that is equipped with on the spacing (41) of second is passed in inserted bar (42) and runs through the lateral wall of box (2) and peg graft with connecing workbin (6), the bayonet joint of inserted bar (42) sets up to frustum type structure.
4. The polyurethane insulation board foaming device according to claim 1, wherein: filter piece (8) including filtering a net section of thick bamboo (81), filtering a net section of thick bamboo (81) is the slope setting, install the output shaft of driving motor (83) and driving motor (83) on the right-hand member face of filtering a net section of thick bamboo (81) and be connected with spiral material pushing rod (82) that are located filtering a net section of thick bamboo (81) inner chamber, the upper end of filtering a net section of thick bamboo (81) is equipped with inlet pipe (84), the discharging pipe that the funnel type connects feed bin (3) is located the inner chamber of inlet pipe (84).
5. The polyurethane insulation board foaming device according to claim 1, wherein: the supporting pieces (9) are provided with four groups of supporting pieces (9), every two of the four groups of supporting pieces (9) are fixedly arranged on two sides of the filter screen cylinder (81), each supporting piece (9) comprises a telescopic rod (91) and a spring (92), and the springs (92) are located in inner cavities of the telescopic rods (91).
6. The polyurethane insulation board foaming device according to claim 1, wherein: guide (7) include axis of rotation (71), axis of rotation (71) are rotated and are set up the inner chamber in box (2), install deflector (73) on axis of rotation (71), axis of rotation (71) run through one of box (2) lateral wall and are served and install elasticity fastening pad (72) and install the junction at axis of rotation (71) and box (2).
7. The polyurethane insulation board foaming device according to claim 1, wherein: two sets of connect the upper end of workbin (6) all to be the symmetry and install two sets of stop strip (11), be equipped with on foaming machine body (1) with box (2) inner chamber communicating feed inlet (10).
8. The operation method of the polyurethane insulation board foaming device according to claim 1, characterized in that: the operation steps of the method are as follows,
filtration separation operation
The driving motor (83) and the foaming machine are controlled to work, materials are slowly added into the funnel-shaped material receiving bin (3) at a constant speed, the materials with different sizes are separated through the matching of the filter screen cylinder (81) and the rotary spiral material pushing rod (82), the large-particle materials are pushed into the material receiving bin (6), and the materials with the particle size meeting the requirement pass through the filter screen cylinder (81) and enter the foaming machine body (1) to be foamed.
Discharge operation
When the excessive material that connects in workbin (6) need be unloaded, the accessible rotates guide (7) and makes deflector (73) take place to rotate, can get into another empty workbin (6) that connects of a set of with the material direction, rethread rotates adjusting screw (51), make screwed pipe (54) drive L type pole (56) downstream, thereby make two sets of inserted bars (42) outwards move simultaneously, it is fixed to remove the grafting that connects workbin (6), can pour the material that connects in workbin (6), at this in-process, do not influence the normal operating of foaming machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110036695.9A CN112873693A (en) | 2021-01-12 | 2021-01-12 | Polyurethane insulation board foaming equipment and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110036695.9A CN112873693A (en) | 2021-01-12 | 2021-01-12 | Polyurethane insulation board foaming equipment and operation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112873693A true CN112873693A (en) | 2021-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110036695.9A Pending CN112873693A (en) | 2021-01-12 | 2021-01-12 | Polyurethane insulation board foaming equipment and operation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112873693A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216220A (en) * | 2016-07-27 | 2016-12-14 | 浙江明佳环保科技有限公司 | A kind of organic fertilizer particles screening machine |
| CN107398417A (en) * | 2017-08-02 | 2017-11-28 | 安徽乐农环保科技有限公司 | A kind of screening installation and its application method of organic fertilizer processing |
| CN108579597A (en) * | 2018-05-21 | 2018-09-28 | 滁州荣邦智能装备有限公司 | A kind of foaming machine that can ensure that drop temperature is constant |
| CN211709848U (en) * | 2019-12-02 | 2020-10-20 | 广州恒越包装材料有限公司 | Foaming machine foaming filter equipment is used in foam production |
| CN212288393U (en) * | 2020-04-22 | 2021-01-05 | 杭州顶板海绵胶垫有限公司 | Novel polyurethane high-pressure foaming machine |
-
2021
- 2021-01-12 CN CN202110036695.9A patent/CN112873693A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106216220A (en) * | 2016-07-27 | 2016-12-14 | 浙江明佳环保科技有限公司 | A kind of organic fertilizer particles screening machine |
| CN107398417A (en) * | 2017-08-02 | 2017-11-28 | 安徽乐农环保科技有限公司 | A kind of screening installation and its application method of organic fertilizer processing |
| CN108579597A (en) * | 2018-05-21 | 2018-09-28 | 滁州荣邦智能装备有限公司 | A kind of foaming machine that can ensure that drop temperature is constant |
| CN211709848U (en) * | 2019-12-02 | 2020-10-20 | 广州恒越包装材料有限公司 | Foaming machine foaming filter equipment is used in foam production |
| CN212288393U (en) * | 2020-04-22 | 2021-01-05 | 杭州顶板海绵胶垫有限公司 | Novel polyurethane high-pressure foaming machine |
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Application publication date: 20210601 |
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| RJ01 | Rejection of invention patent application after publication |