CN116587510A - Method for manufacturing double-color or multi-color foaming product - Google Patents
Method for manufacturing double-color or multi-color foaming product Download PDFInfo
- Publication number
- CN116587510A CN116587510A CN202310750093.9A CN202310750093A CN116587510A CN 116587510 A CN116587510 A CN 116587510A CN 202310750093 A CN202310750093 A CN 202310750093A CN 116587510 A CN116587510 A CN 116587510A
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- color
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- foaming
- die
- small die
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- 238000005187 foaming Methods 0.000 title claims abstract description 89
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000000465 moulding Methods 0.000 claims abstract description 78
- 238000001746 injection moulding Methods 0.000 claims abstract description 38
- 238000001816 cooling Methods 0.000 claims abstract description 10
- 230000007306 turnover Effects 0.000 claims abstract description 6
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000006260 foam Substances 0.000 claims description 7
- 238000004064 recycling Methods 0.000 claims description 2
- 238000010097 foam moulding Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- PLXMOAALOJOTIY-FPTXNFDTSA-N Aesculin Natural products OC[C@@H]1[C@@H](O)[C@H](O)[C@@H](O)[C@H](O)[C@H]1Oc2cc3C=CC(=O)Oc3cc2O PLXMOAALOJOTIY-FPTXNFDTSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
-
- 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
- B29C44/3415—Heating or cooling
-
- 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
- B29C44/34—Auxiliary operations
- B29C44/58—Moulds
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a method for manufacturing a double-color or multi-color foaming product, which prepares more than two small molds for injection molding and foaming molding turnover; step 1: injection molding a bicolor or polychromatic cold blank by using an injection molding machine; a first small die placing position is reserved in an injection molding die carrier of the injection molding machine, and a small die is placed in the first small die placing position to be positioned; step 2, foaming and molding a bicolor or polychromatic product by using a foaming and molding machine; a second small die placing position is reserved in a foaming molding die frame of the foaming molding machine, the small die and the double-color or multi-color cold blank in the small die are placed into the second small die placing position to be positioned together, and the foaming molding is carried out to obtain a double-color or multi-color product; step 3, taking out the small die from the second small die placement position, opening the small die after cooling, and taking out the bicolor or polychromatic product; the empty small mould is recycled to the step 1. Thus, the manufacturing yield and efficiency are greatly improved.
Description
Technical Field
The invention relates to the technical field of foaming products, in particular to a method for manufacturing a bicolor or polychromatic foaming product, which is mainly but not limited to a foaming sole and can be used for manufacturing bicolor, polychromatic and polychromatic foaming soles and other similar bicolor, polychromatic and polychromatic foaming material products.
Background
The foaming products are widely applied, and single-color, double-color and multi-color foaming products are common.
Taking soles as an example, the foaming soles are widely used for products such as ball shoes, sports shoes and sneakers, during production and manufacture, the previously processed non-foaming soles are usually directly arranged in a mould, when the foaming soles are placed, the mould has certain heat, and the foaming soles can be understood to be higher than normal temperature, when different accessories (usually accessories with different colors) of the soles are placed, the contact temperature of the accessories of the soles and mould cores is not the same temperature, the accessories of the soles with different colors are heated, in addition, in the foaming and forming process, the accessories of the soles are easy to deviate, the produced foaming soles have the problems of color overflow, color cross and the like, the aesthetic degree of the soles is considered, the soles are needed to be checked manually one by one, the color compensation pen is used for color drawing of the soles or the side faces of the soles in the follow-up process, the cost of labor is high, and the manufacturing efficiency of the soles is also affected.
Later, an EVA multicolor sole foaming processing method appears, a plurality of unfoamed product blanks corresponding to multicolor are assembled in a cold mold core according to a designed sole pattern; loading the cold mold core into a lower mold base; the two wedge-shaped clamping tables sequentially and respectively lower two mold core fixing sliding pressing blocks of the mold base, the compression springs move to the middle positions of the mold cores in the sliding guide clamping grooves of the lower mold base, and the clamping bosses on the two mold core fixing sliding pressing blocks compress the mold cores to enable the mold cores to be fixed at the front end, the rear end and the upper and lower positions to complete mold closing work. During actual operation, a worker needs to weigh a plurality of unfoamed product blanks corresponding to the colors into a sleeve, the weight of each sleeve is ensured to be within a set range value, if the sleeve is heavy or light, the worker needs to repeatedly adjust the parts, the counterweight process takes more time, and the sleeve is subsequently put into the mold core. Moreover, the efficiency of manual placement is low, and the placement deviation is easy to exist, so that the sole manufacturing precision is affected.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
In view of the above, the present invention aims at overcoming the drawbacks of the prior art, and its main objective is to provide a method for manufacturing a bicolor or polychromatic foamed product, which uses a small mold as a carrier, and obtains a bicolor or polychromatic product cold blank through bicolor or polychromatic injection molding, and then places the small mold into a foaming molding machine to directly perform heating foaming molding, so as to effectively solve the problems of color overflow and color cross, save the cooling standby time of the foaming molding machine, and also do not need to manually weigh, balance weight and place a plurality of unfoamed product blanks, thereby being suitable for mass production and manufacturing, and greatly improving the manufacturing yield and efficiency.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a method for preparing a bicolor or polychromatic foaming product comprises preparing more than two small molds for injection molding and foaming turnover; the manufacturing method comprises the following steps:
step 1: using an injection molding machine to injection mold cold blanks of two-color or multi-color products;
a first small die placement position is reserved in an injection molding die carrier of the injection molding machine, and a small die is placed in the first small die placement position to be positioned; the small die comprises an upper forming plate and a lower forming plate, wherein the top of the lower forming plate is provided with a lower forming concave surface in a downward concave manner, the bottom of the upper forming plate is provided with an upper forming concave surface in an upward concave manner, and a foaming forming cavity is formed between the lower forming concave surface and the upper forming concave surface in an enclosing manner; the small mould is internally injection-molded with a bicolor or polychromatic cold blank;
step 2, foaming and molding a bicolor or polychromatic product by using a foaming and molding machine;
a second small die placement position is reserved in a foaming molding die frame of the foaming molding machine, the small die in the step 2 is taken out from an injection molding die frame, the small die and the double-color or multi-color cold blank in the small die are placed into the second small die placement position to be positioned together, and the foaming molding machine is heated to enable the double-color or multi-color cold blank in the small die to be foamed and molded into a double-color or multi-color product;
step 3, taking the small die out of the second small die placement position, opening the small die after cooling, and taking out a bicolor or polychromatic product; and recycling the empty small die to the step 1.
As a preferable document, a plurality of second small die placing positions are reserved in a foaming molding die frame of the foaming molding machine, a plurality of small dies are placed in the corresponding second small die placing positions, and a plurality of bicolor or polychromatic products are molded by one foaming molding machine.
As a preferred document, the periphery of the small die is matched with the first small die placement position and the second small die placement position, and the foaming molding cavities of different small dies are different, so that the small dies are replaced to meet the requirements of different product manufacturing.
As a preferred document, the upper and lower overlapping surfaces of both the upper and lower molding plates are designed as meandering surfaces to achieve the upper and lower bite positioning.
As a preferred document, a color separator is also provided, which is selectively provided between the upper molding plate and the lower molding plate.
As a preferred document, in step 1, the weight of the injection-molded double-colored or multi-colored cold blank is ensured to reach the standard by controlling the injection amount.
Compared with the prior art, the invention has obvious advantages and beneficial effects, in particular, the technical proposal shows that the invention mainly takes the small mould as a carrier, obtains a cold blank of a bicolor or polychromatic product through bicolor or polychromatic injection molding, then puts the small mould into a foaming molding machine for directly heating and foaming molding, effectively solves the problems of color overflow and color cross, omits the cooling standby time of the foaming molding machine, does not need to manually weigh, balance weight and put a plurality of unfoamed product blanks, is suitable for mass production and manufacture, and greatly improves the manufacturing yield and efficiency.
In order to more clearly illustrate the structural features and efficacy of the present invention, the following detailed description of the invention is made with reference to the accompanying drawings and to the specific embodiments:
drawings
FIG. 1 is a schematic illustration of a process for making a dual or multi-color foam sole in accordance with an embodiment of the present invention;
FIG. 2 is an exploded view (main view angle) of a die and an injection molding frame according to an embodiment of the present invention;
FIG. 3 is another exploded view (side view) of a die and an injection molding frame according to an embodiment of the present invention;
FIG. 4 is a side view of a color separator plate according to an embodiment of the present invention;
FIG. 5 is a top view of a color separator according to an embodiment of the present invention.
The attached drawings are used for identifying and describing: the injection molding die carrier 10, the first small die placement position 101, the guide groove 102, the injection molding upper die carrier 11, the injection molding lower die carrier 12, the small die 20, the guide limit edge 201, the bending surface 202, the upper molding plate 21, the lower molding plate 22, the upper molding concave surface 211, the lower molding concave surface 221, the bicolor or polychromatic sole cold blank 30, the foaming molding die carrier 40, the second small die placement position 401, the foaming molding upper die carrier 41, the foaming molding lower die carrier 42, the bicolor or polychromatic EVA sole 50 and the color separation plate 60.
Detailed Description
Referring to fig. 1 to 5, the specific flow and structure of the embodiment of the present invention are shown.
A method for manufacturing a double-color or multi-color foaming sole mainly but not exclusively comprises the steps of foaming soles, and can be used for manufacturing double-color, multi-color and multi-density foaming soles and other similar double-color, multi-color and multi-density foaming material products.
More than two small molds are needed to be prepared for turnover of injection molding and foaming molding; the manufacturing method comprises the following steps:
step 1: using an injection molding machine to injection mold a bicolor or polychromatic EVA sole cold blank;
a first small die placing position 11 is reserved in an injection molding die frame 10 of the injection molding machine, and a small die 20 is placed in the first small die placing position 101 to be positioned; the injection molding die frame 10 comprises an injection molding upper die frame 11 and an injection molding lower die frame 12 which are matched, wherein the small die 20 comprises an upper molding plate 21 and a lower molding plate 22, a lower molding concave surface 221 is concavely arranged at the top of the lower molding plate 22, an upper molding concave surface 211 is concavely arranged at the bottom of the upper molding plate 21, and a foaming molding cavity is formed between the lower molding concave surface 221 and the upper molding concave surface 211 in a surrounding manner; the upper and lower overlapping surfaces of the upper forming plate 21 and the lower forming plate 22 are designed to be the bending surfaces 202 so as to achieve upper and lower occlusion positioning, so that the small die 20 is placed into a foaming forming die frame of a foaming forming machine, the small die 20 has good material positioning effect, the foaming forming is of a double-color or multi-color EVA sole, the size is accurate, and the boundaries of different color parts are clear. A bicolor or polychrome sole cold blank 30 is formed in the small die 20 in an injection molding way; in step 1, by controlling the shot size, for example: the injection quantity of each color material is strictly set, the single-color cold blank formed by single injection is weighed in real time and fed back to the control system, the control system corrects the injection quantity of the material with the next color according to the existing curing weight of the single-color cold blank, the error quantity is smaller in the actual injection forming, if the maximum error is accumulated in the two color material quantities, whether the weight of a single sole meets the standard or not can be influenced, in the traditional technology, the weight of a whole kit needs to be repeatedly selected in a pile of accessories until the weight of the whole kit meets the standard, in the injection forming link, the intelligent monitoring and correction are realized, and the weight of the injection-formed double-color or multi-color sole cold blank 30 is further ensured to meet the standard, so that the weighing and weighting are not needed like the traditional technology.
Step 2, foaming and molding the bicolor or polychromatic EVA sole by using a foaming and molding machine;
a second small die placement position 401 is reserved in a foam molding die frame 40 of the foam molding machine, and the foam molding die frame 40 comprises an upper foam molding die frame 41 and a lower foam molding die frame 42. Taking the small die 20 in the step 2 out of the injection molding die frame 10, putting the small die 20 and the double-color or multi-color sole cold blank 30 in the small die 20 into the second small die placing position 401 together to be positioned, and heating by the foaming molding machine to foam and mold the double-color or multi-color sole cold blank in the small die 20 into the double-color or multi-color EVA sole 50;
step 3, taking out the small die 20 from the second small die placing position 401, opening the small die 20 after cooling, and taking out the bicolor or multicolour EVA sole 50; the empty small die 20 is recycled to the step 1.
The foaming mold frame 40 of the foaming molding machine is reserved with a plurality of second small mold placing positions 401, a plurality of small molds 20 are placed in the second small mold placing positions 401 corresponding to the small molds, and the same foaming molding machine is used for foaming and molding a plurality of double-color or multi-color EVA soles at a time, so that the foaming molding machine is suitable for mass production and manufacturing, and the foaming molding efficiency is greatly improved. The foam molding die carrier 40 can be provided with a plurality of cavities which are stacked up and down and are arranged side by side left and right as the second small die placing position 401, which is similar to a drawer position. The small molds 20 can be stacked elsewhere to wait for cooling, and then the small molds 20 are opened to take out the finished product. The foaming molding machine can be continuously used, the next batch of small molds 20 are pushed into the mold for heating foaming molding, the mold waiting cooling time of the foaming molding machine in the traditional technology is saved, meanwhile, the heat of the foaming molding machine is not wasted, and the condition that the heat is dissipated into the air to cause energy waste due to repeated heating and cooling in the traditional technology is improved. The small dies 20 can be arranged in a plurality for facilitating the mass production of soles, the small dies 20 are used as both a mold core of an injection molding machine and a mold core of a foaming molding machine, and also serve as a product turnover carrier in the whole process flow, so that the products are ensured to be positioned and protected by the small dies 20 in the whole process flow, and the stability and consistency of the sole manufacturing quality are ensured. Meanwhile, the small die 20 is designed into a square shape, whether the small die 20 is temporarily stored in a production process or is idle for storage, the stacking and the placement are convenient, the turnover movement operation is simple and convenient, in the injection molding die frame 10 of an injection molding machine and in the foaming molding die frame 40 of a foaming molding machine, a pushing and pulling mode can be adopted, the bottom of the small die 20 and/or the top of the small die 20 are utilized, the periphery of the bottom of the lower molding plate 22 and/or the periphery of the top of the upper molding plate 21 are also referred to as the left end and the right end extending guide limit edge 201, and the guide limit edge is matched with corresponding guide grooves 102 arranged on the first small die placement position 101 and the second small die placement position 401, so that the pushing and pulling operation convenience is improved, the taking and the placement are flexible, and meanwhile, the small die 20 is reliably positioned in the first small die placement position 101 and the second small die placement position 401.
In general, the periphery of the small mold 20 may be unchanged to match the first small mold placement position 101 and the second small mold placement position 401, and a foaming cavity for a pair of soles may be disposed in each small mold 20, and the foaming cavities of different small molds 20 may have different sizes or shapes, so that the small molds 20 may be replaced to meet different sole manufacturing requirements. Therefore, the whole production equipment (including injection molding machine, foaming molding machine, etc.) is basically not changed for different soles, and only the small mold 20 with different foaming molding cavities is needed (namely, the lower molding concave 221 and the upper molding concave 211 of the small mold 20 are changed).
Further, a color separation plate 60 may be provided, and the color separation plate 60 may be selectively separated between the upper molding plate 21 and the lower molding plate 22, so as to meet the color separation requirement when the injection molding of the dual-color or multi-color EVA sole cold blank.
In summary, the design key point of the invention is that the small mold is mainly used as a carrier, the bicolor or polychromatic EVA sole cold blank is obtained through bicolor or polychromatic injection molding, then the small mold is put into a foaming molding machine for direct heating foaming molding, the problems of color overflow and color cross are effectively solved, the cooling standby time of the foaming molding machine is saved, and the manual weighing, counterweight and placing of a plurality of unfoamed EVA sole blanks are not needed, thereby being suitable for mass production and manufacturing and greatly improving the manufacturing yield and efficiency.
The foregoing description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention are still within the scope of the technical solutions of the present invention.
Claims (6)
1. A method for manufacturing a bicolor or polychromatic foaming product is characterized by comprising the following steps of: preparing more than two small molds for turnover of injection molding and foaming molding; the manufacturing method comprises the following steps:
step 1: using an injection molding machine to injection mold cold blanks of two-color or multi-color products;
a first small die placement position is reserved in an injection molding die carrier of the injection molding machine, and a small die is placed in the first small die placement position to be positioned; the small die comprises an upper forming plate and a lower forming plate, wherein the top of the lower forming plate is provided with a lower forming concave surface in a downward concave manner, the bottom of the upper forming plate is provided with an upper forming concave surface in an upward concave manner, and a foaming forming cavity is formed between the lower forming concave surface and the upper forming concave surface in an enclosing manner; the small mould is internally injection-molded with a bicolor or polychromatic cold blank;
step 2, foaming and molding a bicolor or polychromatic product by using a foaming and molding machine;
a second small die placement position is reserved in a foaming molding die frame of the foaming molding machine, the small die in the step 2 is taken out from an injection molding die frame, the small die and the double-color or multi-color cold blank in the small die are placed into the second small die placement position to be positioned together, and the foaming molding machine is heated to enable the double-color or multi-color cold blank in the small die to be foamed and molded into a double-color or multi-color product;
step 3, taking the small die out of the second small die placement position, opening the small die after cooling, and taking out a bicolor or polychromatic product; and recycling the empty small die to the step 1.
2. The method for manufacturing the bicolor or polychromatic foam product according to claim 1, wherein the method comprises the following steps: the foaming molding die carrier of the foaming molding machine is reserved with a plurality of second small die placing positions, a plurality of small dies are placed into the corresponding second small die placing positions, and a plurality of double-color or multi-color products are molded by one-step foaming of the same foaming molding machine.
3. The method for manufacturing the bicolor or polychromatic foam product according to claim 1, wherein the method comprises the following steps: the periphery of the small die is matched with the first small die placing position and the second small die placing position, and the foaming molding cavities of different small dies are different, so that the small dies are replaced to meet the requirements of manufacturing different products.
4. The method for manufacturing the bicolor or polychromatic foam product according to claim 1, wherein the method comprises the following steps: the upper and lower overlapping surfaces of the upper forming plate and the lower forming plate are designed to be zigzag surfaces so as to achieve upper and lower occlusion positioning.
5. The method for manufacturing the bicolor or polychromatic foam product according to claim 1, wherein the method comprises the following steps: a color separator is also provided, which may be selectively provided between the upper and lower molding plates.
6. The method for manufacturing the bicolor or polychromatic foam product according to claim 1, wherein the method comprises the following steps: in the step 1, the weight of the double-color or multi-color cold blank formed by injection molding is ensured to reach the standard by controlling the injection quantity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310750093.9A CN116587510A (en) | 2023-06-21 | 2023-06-21 | Method for manufacturing double-color or multi-color foaming product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310750093.9A CN116587510A (en) | 2023-06-21 | 2023-06-21 | Method for manufacturing double-color or multi-color foaming product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116587510A true CN116587510A (en) | 2023-08-15 |
Family
ID=87601043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310750093.9A Pending CN116587510A (en) | 2023-06-21 | 2023-06-21 | Method for manufacturing double-color or multi-color foaming product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116587510A (en) |
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2023
- 2023-06-21 CN CN202310750093.9A patent/CN116587510A/en active Pending
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