CN106738563A - Silica gel transfer 3D pattern integral forming process in a kind of mould - Google Patents
Silica gel transfer 3D pattern integral forming process in a kind of mould Download PDFInfo
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- CN106738563A CN106738563A CN201611172543.7A CN201611172543A CN106738563A CN 106738563 A CN106738563 A CN 106738563A CN 201611172543 A CN201611172543 A CN 201611172543A CN 106738563 A CN106738563 A CN 106738563A
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- Prior art keywords
- silica gel
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- baking
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Classifications
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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
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/18—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles incorporating preformed parts or layers, e.g. compression moulding around inserts or for coating articles
Abstract
The invention provides silica gel transfer 3D pattern integral forming process in a kind of mould, comprise the following steps：The PET back sides are applied using environmental protection treatment agent A, coating baking, PET fronts are applied using environmental protection treatment agent B, coating baking is applied using environmental protection treatment agent B to PET fronts, coating baking, printing environment-friendly glue A, and toasted, carry out 3D color printing printed patterns using printing machine, printing environment-friendly glue B, and toasted, machinery beats location hole, using special laminating machine by the PET sheet after silica gel double exposure to step S10, silica gel oil pressure is molded, vulcanization, prints Environment-friendlyglue glue D on silica gel, fitted with silica gel product, and carry out thermo-compression bonding, quality testing；3D patterns are transferred to silica gel product during for silica gel compression molding, pattern is just on product during depanning, and pattern is indeformable, and definition is high, excellent wear resistance.Production efficiency is greatly improved, shortens the production cycle, saved production cost.
Description
Technical field
The present invention relates to silica gel manufactured goods in-mold transfer printing field shaping technique, especially silica gel transfer 3D patterns in a kind of mould
Integral forming process.
Background technology
The technology that has is after first silica gel product is formed out at present, then pattern special fixture thermal transfer mode thermoprint
Up.This mode is primarily present following shortcoming：1. picture on surface is not clear enough.2. the production cycle is long, and production cost is higher by about
30%, 3. product have limitation, it is impossible to complete the printing of 3D patterns.
The content of the invention
In view of this, the main object of the present invention is to provide silica gel transfer 3D pattern integral forming process in a kind of mould.
Its technical scheme for using is：
A kind of silica gel transfer 3D pattern integral forming process in mould, the technique comprises the following steps：
Step S1：The PET back sides are applied using environmental protection treatment agent A,
Step S2：Coating baking,
Step S3:PET fronts are applied using environmental protection treatment agent B,
Step S4:Coating baking,
Step S5:PET fronts are applied using environmental protection treatment agent B,
Step S6:Coating baking,
Step S7:Printing environment-friendly glue A, and toasted,
Step S8:Using press printing 3D patterns, and carry UV baking machines using printing machine and toasted,
Step S9:Printing environment-friendly glue B, and toasted,
Step S10：Machinery beats location hole,
Step S11：Using special laminating machine by the PET sheet after silica gel double exposure to step S10,
Step S12：Silica gel oil pressure is molded,
Step S13：Vulcanization, tears PET sheet after having vulcanized, pattern is transferred on silica gel product,
Step S14：Environment-friendlyglue glue D is printed on silica gel,
Step S15：Fitted with silica gel product after step S14,
Step S16：16 after step S15）It is hot bonding,
Step S17：Quality testing；
In step sl, the coating layer thickness that the PET back sides apply is 1.5 μm~2.5 μm,
In step s 2, the speed being coated with during baking is 50m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min,
In step s3, the coating layer thickness that PET fronts apply is 1.5 μm~2.5 μm,
In step s 4, the speed being coated with during baking is 50m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min,
In step s 5, using the continuous 2 processing coating of environment-friendly silica gel, it is ensured that the wearability of pattern, 3.5 μm of coating layer thickness~
4.5 μm,
In step s 6, the speed being coated with during baking is 30m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min,
In step s 8, baking condition is 115 DEG C~125 DEG C/20min,
In step s 9, baking condition is 115 DEG C~125 DEG C/20min,
In step s 11, silica gel is laminated to special laminating machine the PET sheet for printing just on, lamination thickness must assure that
0.35mm~0.45mm, length and width size must can not have bubble by PET sizes, the piece folded out,
In step S12 and step S13, the method for silica gel oil pressure shaping is routinely to produce dumping and expect on mould, carrying out
PET film contraposition be put into silica gel mould positioning on, matched moulds vulcanization, conditions of vulcanization, 175 DEG C of temperature~205 DEG C/30S~50S, pressure
Power is 9~11kg,
In step s 16,110 DEG C of bonding parameter~130 DEG C/10S~15 S, pressure is 1.5~2.5kg.
Preferably, environmental protection treatment agent A components by mass percentage are：Coupling agent 2~4%, electrostatic agent 4~6%, Gu
Agent 1~3%, balance of methyl ethylene.
Preferably, environmental protection treatment agent B components by mass percentage are：Coupling agent 4~6%, delayed-action activator 6~10%,
Curing agent 5~9%, balance of methyl ethylene.
Preferably, Environment-friendlyglue glue A components by mass percentage are：Coupling agent 1~3%, delayed-action activator 16~20%, Gu
Agent 1~5%, flatting silica 17~21%, balance of methyl ethylene.
Preferably, Environment-friendlyglue glue B components by mass percentage are：Coupling agent 1~3%, delayed-action activator 0.5~1.5%,
Curing agent 1~5%, balance of methyl ethylene.
Preferably, Environment-friendlyglue glue B components by mass percentage are：Curing agent 0.5~1.5%, balance of methyl second
Alkenyl, it is preferred that Environment-friendlyglue glue B components by mass percentage are：Curing agent 1%, balance of methyl ethylene.
Preferably, environmental protection treatment agent A components by mass percentage are：Coupling agent 3%, electrostatic agent 5%, curing agent
2%, balance of methyl ethylene.
Preferably, environmental protection treatment agent B components by mass percentage are：Coupling agent 5%, delayed-action activator 8%, curing agent
7%, balance of methyl ethylene.
Preferably, Environment-friendlyglue glue A components by mass percentage are：Coupling agent 2%, delayed-action activator 18%, curing agent 3%,
Flatting silica 19%, balance of methyl ethylene.
Preferably, Environment-friendlyglue glue B components by mass percentage are：Coupling agent 2.1%, delayed-action activator 0.9%, curing agent
3%, balance of methyl ethylene.
Beneficial effects of the present invention are：
Pattern is transferred on silica gel product during using silica gel compression molding, pattern, can be with from surface just on product during depanning
Find out 3D effect, different colours different pattern can be realized.Realize the effect of silica gel 3D patterns.It is very wide using field
It is wealthy, in electronic product, daily necessities, artwork Ornament etc..
Brief description of the drawings
Fig. 1 is structural manufacturing process flow chart of the invention.
Specific embodiment
Describe the present invention in detail below in conjunction with accompanying drawing and specific embodiment, herein illustrative examples of the invention
It is and explanation is used for explaining the present invention but not as a limitation of the invention.
Reference picture 1, is construed in the present invention to the term for occurring：PET is poly terephthalic acid class plastics.
Embodiment 1
The PET back sides are applied using environmental protection treatment agent A, the coating layer thickness that the PET back sides apply is 1.5 μm, and the environmental protection treatment agent A presses matter
Measure percentage component be：Coupling agent 3%, electrostatic agent 5%, curing agent 2%, balance of methyl ethylene；Coating baking, during baking
The speed of coating is 50m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min；Using environmental protection treatment agent B to PET fronts
Apply, the coating layer thickness that PET fronts apply is 1.5 μm, environmental protection treatment agent B components by mass percentage are：Coupling agent 5%, prolongs
Slow agent 8%, curing agent 7%, balance of methyl ethylene；Coating baking, the speed being coated with during baking is 50m/min, coating baking
115 DEG C of temperature~125 DEG C/15min；PET fronts are applied using environmental protection treatment agent B, using continuous 2 processing of environmental protection treatment agent B
Coating, it is ensured that the wearability of pattern, 3.5 μm of coating layer thickness, environmental protection treatment agent B components by mass percentage are：Coupling
Agent 5%, delayed-action activator 8%, curing agent 7%, balance of methyl ethylene；Coating baking, the speed being coated with during baking is 30m/min, is applied
115 DEG C of cloth baking temperature~125 DEG C/15min；Printing environment-friendly glue A, and being toasted, baking condition is 115 DEG C~125 DEG C/
20min, the Environment-friendlyglue glue A component by mass percentage is：Coupling agent 2%, delayed-action activator 18%, curing agent 3%, flatting silica
19%, balance of methyl ethylene；3D printings, printed patterns are carried out using printing machine, and UV baking machines are carried using printing machine to enter
Row baking；Printing environment-friendly glue B, and toasted, baking condition is 115 DEG C~125 DEG C/20min, and the Environment-friendlyglue glue B is pressed
The component of mass percent is：Coupling agent 2.1%, delayed-action activator 0.9%, curing agent 3%, balance of methyl ethylene；Machinery beats positioning
Hole；Silica gel is laminated to special laminating machine the PET sheet for printing just on, lamination thickness must assure that 0.35mm, length and width size
Must there can not be bubble by PET sizes, the piece folded out；Silica gel oil pressure is molded, and its method is routinely to produce dumping and expect mould
On, the contraposition of ready-made PET film is put into silica gel mould positioning；Matched moulds vulcanizes, conditions of vulcanization, 175 DEG C of temperature~205 DEG C/30S
~50S, pressure is 9~11kg；PET sheet is torn after having vulcanized, Environment-friendlyglue glue D, the Environment-friendlyglue glue E is printed on silica gel and is pressed quality
The component of percentage is：Curing agent 1%, balance of methyl ethylene；Fitted with silica gel product, be hot bonding, bonding parameter 110
DEG C~130 DEG C/10S~15 S, pressure is 1.5~2.5kg.Finally carry out quality testing.
The yields that above-described embodiment is every hundred is 96.95%.
Embodiment 2
The PET back sides are applied using environmental protection treatment agent A, the coating layer thickness that the PET back sides apply is 2 μm, and the environmental protection treatment agent A presses quality
The component of percentage is：Coupling agent 3%, electrostatic agent 5%, curing agent 2%, balance of methyl ethylene；Coating baking, applies during baking
The speed of cloth is 50m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min；PET fronts are applied using environmental protection treatment agent B,
The coating layer thickness that PET fronts apply is 2 μm, and environmental protection treatment agent B components by mass percentage are：Coupling agent 5%, delayed-action activator
8%, curing agent 7%, balance of methyl ethylene；Coating baking, the speed being coated with during baking is 50m/min, is coated with baking temperature
115 DEG C~125 DEG C/15min；PET fronts are applied using environmental protection treatment agent B, using the continuous 2 processing coatings of environmental protection treatment agent B,
Ensure the wearability of pattern, 4 μm of coating layer thickness, environmental protection treatment agent B components by mass percentage are：Coupling agent 5%, prolongs
Slow agent 8%, curing agent 7%, balance of methyl ethylene；Coating baking, the speed being coated with during baking is 30m/min, coating baking
115 DEG C of temperature~125 DEG C/15min；Printing environment-friendly glue A, and toasted, baking condition is 115 DEG C~125 DEG C/20min,
Environment-friendlyglue glue A components by mass percentage are：Coupling agent 2%, delayed-action activator 18%, curing agent 3%, flatting silica 19%, surplus
It is methyl ethylene；3D printings, printed patterns are carried out using printing machine, and UV baking machines are carried using printing machine to be toasted；
Printing environment-friendly glue B, and toasted, baking condition is 115 DEG C~125 DEG C/20min, and the Environment-friendlyglue glue B presses quality percentage
The component of ratio is：Coupling agent 2.1%, delayed-action activator 0.9%, curing agent 3%, balance of methyl ethylene；Machinery beats location hole；With special
Silica gel is laminated to laminating machine the PET sheet for printing just on, lamination thickness must assure that 0.4mm, length and width size must be by PET
Size, the piece folded out can not have bubble；Silica gel oil pressure is molded, and its method is, routinely produces dumping and expects on mould, carrying out
PET film contraposition be put into silica gel mould positioning on；Matched moulds vulcanizes, conditions of vulcanization, 175 DEG C of temperature~205 DEG C/30S~50S, pressure
Power is 9~11kg；PET sheet is torn after having vulcanized, Environment-friendlyglue glue D, the Environment-friendlyglue glue E is printed on silica gel by mass percentage
Component is：Curing agent 1%, balance of methyl ethylene；Fitted with silica gel product, be hot bonding, bonding parameter 110 DEG C~130
DEG C/10S~15 S, pressure is 1.5~2.5kg.Finally carry out quality testing.
The yields that above-described embodiment is every hundred is 100%.
Embodiment 3
The PET back sides are applied using environmental protection treatment agent A, the coating layer thickness that the PET back sides apply is 2.5 μm, and the environmental protection treatment agent A presses matter
Measure percentage component be：Coupling agent 3%, electrostatic agent 5%, curing agent 2%, balance of methyl ethylene；Coating baking, during baking
The speed of coating is 50m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min；Using environmental protection treatment agent B to PET fronts
Apply, the coating layer thickness that PET fronts apply is 2.5 μm, environmental protection treatment agent B components by mass percentage are：Coupling agent 5%, prolongs
Slow agent 8%, curing agent 7%, balance of methyl ethylene；Coating baking, the speed being coated with during baking is 50m/min, coating baking
115 DEG C of temperature~125 DEG C/15min；PET fronts are applied using environmental protection treatment agent B, using continuous 2 processing of environmental protection treatment agent B
Coating, it is ensured that the wearability of pattern, 4.5 μm of coating layer thickness, environmental protection treatment agent B components by mass percentage are：Coupling
Agent 5%, delayed-action activator 8%, curing agent 7%, balance of methyl ethylene；Coating baking, the speed being coated with during baking is 30m/min, is applied
115 DEG C of cloth baking temperature~125 DEG C/15min；Printing environment-friendly glue A, and being toasted, baking condition is 115 DEG C~125 DEG C/
20min, the Environment-friendlyglue glue A component by mass percentage is：Coupling agent 2%, delayed-action activator 18%, curing agent 3%, flatting silica
19%, balance of methyl ethylene；3D printings, printed patterns are carried out using printing machine, and UV baking machines are carried using printing machine to enter
Row baking；Printing environment-friendly glue B, and toasted, baking condition is 115 DEG C~125 DEG C/20min, and the Environment-friendlyglue glue B is pressed
The component of mass percent is：Coupling agent 2.1%, delayed-action activator 0.9%, curing agent 3%, balance of methyl ethylene；Machinery beats positioning
Hole；Silica gel is laminated to special laminating machine the PET sheet for printing just on, lamination thickness must assure that 0.45mm, length and width size
Must there can not be bubble by PET sizes, the piece folded out；Silica gel oil pressure is molded, and its method is routinely to produce dumping and expect mould
On, the contraposition of ready-made PET film is put into silica gel mould positioning；Matched moulds vulcanizes, conditions of vulcanization, 175 DEG C of temperature~205 DEG C/30S
~50S, pressure is 9~11kg；PET sheet is torn after having vulcanized, Environment-friendlyglue glue D, the Environment-friendlyglue glue E is printed on silica gel and is pressed quality
The component of percentage is：Curing agent 1%, balance of methyl ethylene；Fitted with silica gel product, be hot bonding, bonding parameter 110
DEG C~130 DEG C/10S~15 S, pressure is 1.5~2.5kg.Finally carry out quality testing.
The yields that above-described embodiment is every hundred is 95.90%.
According to above-mentioned method, relatively with traditional with cost advantage, such as estimated 6 people of transfer modes producers, 6 people *
200 yuan of day=1200 yuan, produce 2000 products, and average each product needed labour cost is estimated 0.6 yuan, board equipment depreciation,
The expense of factory building, using this technique, it is not necessary to artificial input, is calculated by 2 yuan 1, and 0.6 yuan of ÷ 2=30%, cost can be saved
30%.Meanwhile, equipment investment expense has been saved, equipment investment 7.8 ten thousand/platform of printing machine is 3. saved, toast 120,000/platform of continuous tunnel furnace.It is real
Now one completes production, saves production cycle and production cost, and 3D patterns can accomplish the combination of perfect and silica gel, while constant
Shape, the printing of 3D products can not be accomplished to transfer, can be realized with this technique.
The technical scheme disclosed in the embodiment of the present invention is described in detail above, specific implementation used herein
Example is set forth to the principle and implementation method of the embodiment of the present invention, and the explanation of above example is only applicable to help and understands
The principle of the embodiment of the present invention；Simultaneously for those of ordinary skill in the art, according to the embodiment of the present invention, in specific implementation
Be will change in mode and range of application, in sum, this specification content should not be construed as to limit of the invention
System.
Claims (10)
1. silica gel transfers 3D pattern integral forming process in a kind of mould, it is characterised in that the technique comprises the following steps：
Step S1：The PET back sides are applied using environmental protection treatment agent A,
Step S2：Coating baking,
Step S3:PET fronts are applied using environmental protection treatment agent B,
Step S4:Coating baking,
Step S5:PET fronts are applied using environmental protection treatment agent B,
Step S6:Coating baking,
Step S7:Printing environment-friendly glue A, and toasted,
Step S8:Using press printing 3D patterns, and carry UV baking machines using printing machine and toasted,
Step S9:Printing environment-friendly glue B, and toasted,
Step S10：Machinery beats location hole,
Step S11：Using special laminating machine by the PET sheet after silica gel double exposure to step S10,
Step S12：Silica gel oil pressure is molded,
Step S13：Vulcanization, tears PET sheet after having vulcanized, pattern is transferred on silica gel product,
Step S14：Environment-friendlyglue glue D is printed on silica gel,
Step S15：Fitted with silica gel product after step S14,
Step S16：16 after step S15）It is hot bonding,
Step S17：Quality testing；
In step sl, the coating layer thickness that the PET back sides apply is 1.5 μm~2.5 μm,
In step s 2, the speed being coated with during baking is 50m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min,
In step s3, the coating layer thickness that PET fronts apply is 1.5 μm~2.5 μm,
In step s 4, the speed being coated with during baking is 50m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min,
In step s 5, using the continuous 2 processing coating of environment-friendly silica gel, it is ensured that the wearability of pattern, 3.5 μm of coating layer thickness~
4.5 μm,
In step s 6, the speed being coated with during baking is 30m/min, is coated with 115 DEG C of baking temperature~125 DEG C/15min,
In step s 8, baking condition is 115 DEG C~125 DEG C/20min,
In step s 9, baking condition is 115 DEG C~125 DEG C/20min,
In step s 11, silica gel is laminated to special laminating machine the PET sheet for printing just on, lamination thickness must assure that
0.35mm~0.45mm, length and width size must can not have bubble by PET sizes, the piece folded out,
In step S12 and step S13, the method for silica gel oil pressure shaping is routinely to produce dumping and expect on mould, carrying out
PET film contraposition be put into silica gel mould positioning on, matched moulds vulcanization, conditions of vulcanization, 175 DEG C of temperature~205 DEG C/30S~50S, pressure
Power is 9~11kg,
In step s 16,110 DEG C of bonding parameter~130 DEG C/10S~15 S, pressure is 1.5~2.5kg.
2. technique according to claim 1, it is characterised in that environmental protection treatment agent A components by mass percentage are：
Coupling agent 2~4%, electrostatic agent 4~6%, curing agent 1~3%, balance of methyl ethylene.
3. technique according to claim 1, it is characterised in that environmental protection treatment agent B components by mass percentage are：
Coupling agent 4~6%, delayed-action activator 6~10%, curing agent 5~9%, balance of methyl ethylene.
4. technique according to claim 1, it is characterised in that Environment-friendlyglue glue A components by mass percentage are：It is even
Connection agent 1~3%, delayed-action activator 16~20%, curing agent 1~5%, flatting silica 17~21%, balance of methyl ethylene.
5. technique according to claim 1, it is characterised in that Environment-friendlyglue glue B components by mass percentage are：It is even
Connection agent 1~3%, delayed-action activator 0.5~1.5%, curing agent 1~5%, balance of methyl ethylene.
6. technique according to claim 1, it is characterised in that Environment-friendlyglue glue B components by mass percentage are：Gu
Agent 0.5~1.5%, balance of methyl ethylene, it is preferred that Environment-friendlyglue glue B components by mass percentage are：Solidification
Agent 1%, balance of methyl ethylene.
7. technique according to claim 2, it is characterised in that environmental protection treatment agent A components by mass percentage are：
Coupling agent 3%, electrostatic agent 5%, curing agent 2%, balance of methyl ethylene.
8. technique according to claim 3, it is characterised in that environmental protection treatment agent B components by mass percentage are：
Coupling agent 5%, delayed-action activator 8%, curing agent 7%, balance of methyl ethylene.
9. technique according to claim 4, it is characterised in that Environment-friendlyglue glue A components by mass percentage are：It is even
Connection agent 2%, delayed-action activator 18%, curing agent 3%, flatting silica 19%, balance of methyl ethylene.
10. according to the technique described in claim 5 or 6, it is characterised in that Environment-friendlyglue glue B components by mass percentage are：
Coupling agent 2.1%, delayed-action activator 0.9%, curing agent 3%, balance of methyl ethylene.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201611172543.7A CN106738563A (en) | 2016-12-17 | 2016-12-17 | Silica gel transfer 3D pattern integral forming process in a kind of mould |
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| CN201611172543.7A CN106738563A (en) | 2016-12-17 | 2016-12-17 | Silica gel transfer 3D pattern integral forming process in a kind of mould |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819526A (en) * | 2018-05-18 | 2018-11-16 | 叶正彬 | A kind of silica gel 3D moves the application of unreal transfer mark/sewing target preparation method and product |
| CN114536946A (en) * | 2022-01-17 | 2022-05-27 | 东莞市松烁硅胶科技有限公司 | Preparation method of geometric silica gel seal |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1199362A (en) * | 1996-07-08 | 1998-11-18 | 东芝硅株式会社 | Process for production of patterned moldings of silicone rubber |
| CN103358633A (en) * | 2013-06-09 | 2013-10-23 | 昆山旭展橡塑有限公司 | Preparation method for composite polyethylene terephthalate (PET) protection film |
| CN105196660A (en) * | 2015-09-21 | 2015-12-30 | 东莞市纳利光学材料有限公司 | Protective film capable of being formed by means of hot pressing and preparation method thereof |
-
2016
- 2016-12-17 CN CN201611172543.7A patent/CN106738563A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1199362A (en) * | 1996-07-08 | 1998-11-18 | 东芝硅株式会社 | Process for production of patterned moldings of silicone rubber |
| CN103358633A (en) * | 2013-06-09 | 2013-10-23 | 昆山旭展橡塑有限公司 | Preparation method for composite polyethylene terephthalate (PET) protection film |
| CN105196660A (en) * | 2015-09-21 | 2015-12-30 | 东莞市纳利光学材料有限公司 | Protective film capable of being formed by means of hot pressing and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108819526A (en) * | 2018-05-18 | 2018-11-16 | 叶正彬 | A kind of silica gel 3D moves the application of unreal transfer mark/sewing target preparation method and product |
| CN114536946A (en) * | 2022-01-17 | 2022-05-27 | 东莞市松烁硅胶科技有限公司 | Preparation method of geometric silica gel seal |
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