CN105835300A - High fineness and no-weldlines injection moulding process - Google Patents
High fineness and no-weldlines injection moulding process Download PDFInfo
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- CN105835300A CN105835300A CN201610428508.0A CN201610428508A CN105835300A CN 105835300 A CN105835300 A CN 105835300A CN 201610428508 A CN201610428508 A CN 201610428508A CN 105835300 A CN105835300 A CN 105835300A
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0025—Preventing defects on the moulded article, e.g. weld lines, shrinkage marks
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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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/1703—Introducing an auxiliary fluid into the mould
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C45/7337—Heating or cooling of the mould using gas or steam
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C2045/7356—Heating or cooling of the mould the temperature of the mould being near or higher than the melting temperature or glass transition temperature of the moulding material
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/72—Heating or cooling
- B29C45/73—Heating or cooling of the mould
- B29C2045/7393—Heating or cooling of the mould alternately heating and cooling
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention discloses a high fineness and no-weldlines injection moulding process. The high fineness and no-weldlines injection moulding process includes the steps of selecting injection resin materials, drying the resin materials to lower the humidity of the resin materials to be 0.01% or below, preheating a mould, introducing high-temperature water steam into the mould to enable the temperature of the mould to instantly exceed the viscous flow temperature for deformation of the resin materials, injecting the resin materials in the molten state into the mould, discharging the high-temperature water steam out of the mould after injection moulding is completed, introducing cooling water into the mould to cool the mould to 20-40 DEG C, discharging the cooling water out and taking out a finished product. By means of the high fineness and no-weldlines injection moulding process, the surface of a plastic product is high in fineness and can achieve a mirror surface effect, so that the defects such as welding lines, welding marks, dents, flow marks, ruffles and silver marks existing on the surface of a plastic product obtained with a common forming process can be eliminated, and the shrinkage phenomenon of the surface of the product existing in the common forming process is thoroughly solved. The formed plastic product does not need to be subjected to paint spraying and other subsequent processing, the yield is improved by 20-30%, and the quality of the plastic product is more perfect.
Description
Technical field
The present invention relates to injection molding art, be specifically related to a kind of high-surface gloss traceless injection molding process.
Background technology
Along with the news speed of plastics and mould industry develops so that plastic member product, such as household electrical appliance and OA produce
Product etc. respectfully present to thin-walled property, complication and individualized development gesture, for these high-end products, apparent
Quality is typically desirable that Gao Guang (DE Specular Lighting) is not allow for weld mark, indenture, current mark, ripple and filamentary silver
The bad defect such as stricture of vagina, and must have certain intensity, common injection molding process is difficult to meet this respect
Requirement, this new injection molding technology of will seeking development.
Summary of the invention
For the deficiencies in the prior art, the present invention provides a kind of high-surface gloss traceless injection molding process.
In order to solve above-mentioned technical problem, present invention is disclosed a kind of high-surface gloss traceless injection molding process, its bag
Include following steps:
Select materials: select in PC, ABS/PC, PC/PMMA, PMMA/ABS, PC/GF and high-light ABS material
One as injection resin material；
Dry: above-mentioned resin material is carried out drying and processing so that it is humidity drops to less than 0.01%；
Preheating: preheat mould, preheating temperature is 85 degrees Celsius, and preheating time is 1～2 hour；
Matched moulds: be passed through high-temperature water vapor in the mould after preheating, make mold temperature moment reach more than above-mentioned
The flow temperature of resin material deformation, wherein, the temperature of the high-temperature steam being passed through is 175～180 degrees Celsius；
Injection: inject in mould through drying and processing and the resin material under being in molten condition, complete note
After moulding, high-temperature vapor is discharged mould；
Cooling: be passed through cooling water in mould, make mould be rapidly cooled to 20～40 degrees Celsius, molten
Resin material under state is shaped formation finished product in a mold；
Remove cooling water: in mould, be blown into pressure-air, discharge cooling water；
Die sinking: finished product is ejected by mould, takes out finished product.
According to an embodiment of the present invention, in above-mentioned high-surface gloss traceless injection molding process:
In baking step: drying temperature is 115 degrees centigrade, and drying time is 3 hours.
According to an embodiment of the present invention, in above-mentioned high-surface gloss traceless injection molding process:
In matched moulds step: mold temperature moment reaches 130～150 degrees Celsius.
According to an embodiment of the present invention, in above-mentioned high-surface gloss traceless injection molding process:
In injection step: during resin material injection, mold temperature is maintained to be not less than 130 degrees Celsius.
According to an embodiment of the present invention, in above-mentioned high-surface gloss traceless injection molding process:
In cooling step: in cooling procedure, mould being carried out pressurize, dwell pressure is molten condition resinous wood
Material injects in mold process the 70%～80% of maximum pressure, and the dwell time is 0.5 hour；The cooling being passed through
The water temperature of water is 5 degrees Celsius.
According to an embodiment of the present invention, above-mentioned high-surface gloss traceless injection molding process also includes:
Remove in cooling water step: the pressure of the pressure-air being blown in mould is 0.6 to 1.6MPa.
According to an embodiment of the present invention, in above-mentioned high-surface gloss traceless injection molding process:
Select materials in step, the resin material chosen also include GF, CF or MF, wherein, PC, ABS/PC,
A kind of and GF, CF of being added in PC/PMMA, PMMA/ABS, PC/GF and high-light ABS material or
The weight ratio of MF is 50:1.
Compared with prior art, the present invention can obtain and include techniques below effect:
High-surface gloss traceless injection molding process mainly has the advantage that (1) with the contrast of common injection molding process
The present invention makes the surface of plastic member product have high gloss, improves product surface fineness (can reach minute surface),
Thus eliminate the weld bond of common moulding process plastic product surface existence, weld mark, indenture, current mark, ripple
The defects such as stricture of vagina and filamentary silver stricture of vagina；(2) the shrink phenomenon of the product surface occurred in common moulding process is thoroughly solved；
(3) plastic member product after molding is not required to following process such as spraying paint, improves yield rate 20-30% so that plastic
Product property is more perfect.
Detailed description of the invention
To specifically disclose multiple embodiments of the present invention below, as clearly stated, in many practices
Details will be explained in the following description.It should be appreciated, however, that the details in these practices do not apply with
Limit the present invention.It is to say, the details right and wrong in the some embodiments of the present invention, in these practices
Necessary.
The present invention is to be related to the design of a kind of high-surface gloss traceless injection molding process, this high-surface gloss traceless injection molding
Technique can be applicable to the plastic member product molding of the industries such as household electrical appliances, automobile communication, article of everyday use and medical treatment.
High-surface gloss traceless injection molding process, also known as fast mould temperature heating cooling moulding process, its principle master
If utilizing a three-dimensional nothing remittance line mould and an oil temperature acceleration controller, the temperature in mould is made to add rapidly
Heat and cooling so that the outward appearance of plastic member product be improved significantly.High-surface gloss traceless injection molding process is
One has the complex process that non-linear multi-parameter interacts, and the resin material under molten condition is at mould
Flow behavior in die cavity is difficult to intuitively show, non-thread between quality and the technological parameter of plastic member product
Property, strong coupling and time variation relation, it is difficult to obtain accurate system model, all these all make molding
During choosing of technological parameter become abnormal difficult, how to determine and optimize molding proces s parameters be obtain height
The key of quality product.
In the present invention, high-surface gloss traceless injection molding process mainly includes procedure below: matched moulds → input high-temperature water
Steam → injection → discharge water vapour → input cooling water (cooling) → remove cooling water (cleaning with pressure-air)
→ die sinking → eject → type closes.Specifically comprise the following steps that
Select materials: select in PC, ABS/PC, PC/PMMA, PMMA/ABS, PC/GF and high-light ABS material
One as injection resin material；It is preferably ABS/PC, PMMA/ABS or high-light ABS material；
Dry: above-mentioned resin material is carried out drying and processing so that it is humidity drops to less than 0.01%；
Preheating: preheat mould, preheating temperature is 85 degrees Celsius, and preheating time is 1～2 hour；
Matched moulds: be passed through high-temperature water vapor in the mould after preheating, make mold temperature moment reach more than above-mentioned
The flow temperature of resin material deformation, wherein, the temperature of the high-temperature steam being passed through is 175～180 degrees Celsius；
Injection: inject in mould through drying and processing and the resin material under being in molten condition, complete note
After moulding, high-temperature vapor is discharged mould；
Cooling: be passed through cooling water in mould, make mould be rapidly cooled to 20～40 degrees Celsius, molten
Resin material under state is shaped formation finished product in a mold；
Remove cooling water: in mould, be blown into pressure-air, discharge cooling water；
Die sinking: finished product is ejected by mould, takes out finished product.
Another embodiment of the present invention, in above-mentioned high-surface gloss traceless injection molding process: carry out resin material
During drying and processing, drying temperature is 115 degrees centigrade, and drying time is 3 hours；In matched moulds step: mould
Tool temperature moment reaches 130～150 degrees Celsius；In injection step: during resin material injection, maintain
Mold temperature is not less than 130 degrees Celsius；In cooling step: in cooling procedure, mould is carried out pressurize, protect
Pressure pressure is that molten condition resin material injects in mold process the 70%～80% of maximum pressure, the dwell time
It it is 0.5 hour；The water temperature of the cooling water being passed through is 5 degrees Celsius；Remove in cooling water step: in mould
The pressure of the pressure-air being blown into is 0.6 to 1.6MPa；Select materials in step, in the resin material chosen also
Including GF, CF or MF, wherein, PC, ABS/PC, PC/PMMA, PMMA/ABS, PC/GF and Gao Guang
A kind of and GF, CF or MF of being added weight ratio in ABS material is 50:1.
High-surface gloss traceless injection molding process is mainly when injection mo(u)lding by high-temperature steam, and moment is mould
Temperature rises to 100～150 degree, meanwhile, in order to improve production efficiency, after mould high-temperature heating, and mould
Tool surface should be cooled to rapidly 20～40 degree.Injection forward direction mould is passed through high-temperature water or steam (as temperature is
150 DEG C), make the temperature of mould reach more than the flow temperature of resin thermal deformation, then injecting molten resin,
The material temperature of material front end of so converging just can be maintained at viscosity flow state, will form that not converge line, surface quality good
Good products formed.After molten resin has been injected, just begin to cool down operation.Make mold temperature fast with cooling water
Speed drops to the temperature (such as 40 DEG C) of resin thermal deformation below.As such, it is possible to by accelerating consolidating of resin
Change speed, shorten molding cycle, solve warpage, the problem such as sink.
Above-mentioned high-surface gloss traceless injection molding process has obtained sufficient application in my department actually generates, main
It is used for producing such as Samsung and the base of lg electronics product and audio amplifier etc., all achieves good effect,
Substantially improve the surface quality intensity of plastic member product, and follow-up spraying or the technique such as spray paint can be cancelled, i.e.
Protect the healthy of environment and operator, decrease again technological process.The secondary eliminating costliness adds
Expenses of labour use, while production cost is greatly lowered, saves the energy and material.
Under the conditions of Gao Mowen, when mould temperature is higher than the heat distortion temperature of moulding material, moulding material can be made
Have high gloss.Meanwhile, high-surface gloss traceless injection molding process also eliminates the existence of traditional injection moulding moulding process
Weld mark problem, and necessity of product secondary operations can be removed from, can cost-effective (such as: spray paint),
Environmental protection and energy saving.It addition, common injection molding process, add GF (Glass Fiber, glass fibre),
After CF (Carbon Fiber, carbon fiber) or MF (Metal Fiber, metallic fiber), product can be strengthened
Performance, but outward appearance is not fine, and uses the high-surface gloss traceless injection molding process of the present invention, due to mould
Surface high-temp, GF, CF or MF of addition can enter the inside of product polymer, makes moulding material surface
Crystallization ratio increases, and surface effect is the best, and has certain help to improving product case hardness.
In the present invention, the injection molding process that high-surface gloss traceless injection molding process contrast is traditional, also have as follows
Advantage:
In traditional common injection moulding processing, when mold temperature is arranged relatively low, although can alleviate
Warpage and shrink mark, shortening molding cycle, but easily produce weld mark and material stricture of vagina, dark, the rough surface of gloss etc.
Exterior quality is bad.On the contrary, when arranging higher by mold temperature, the outward appearance on plastic member product surface can be improved
Quality, but it is bad etc. easily to produce warpage, shrink mark, size, extends molding cycle simultaneously, improves into
This.
And the high-surface gloss traceless injection molding process in the present invention, use special quick-cooling and quick-warming temperature control device, can
To solve above two problem simultaneously.It utilizes the steam or high-temperature water and cooling water that steam oven produces, logical
Cross quickly exchange and control the temperature of a molding cycle inner mold, so that the advantage of above two method
All played.
In above-mentioned embodiment, high-surface gloss traceless injection molding process can eliminate plastic product surface and weld line, molten
Lapping defect, ripple and filamentary silver stricture of vagina, thoroughly solve the surface shrink phenomenon of plastic product, and make plastic member product surface
Fineness reaches minute surface level, almost can reproduce the apparent condition of mould completely, reach seamless effect.
After plastic product molding, it is not necessary to plastic member product is carried out follow-up spray process, effectively reduce cost, contracting
Short delivery ETCD estimated time of commencing discharging.Additionally, high-surface gloss traceless injection molding process also can solve to add floating fibre produced by fine product now
As, so that plastic member product quality is more perfect.In shaping thin wall, at high temperature injecting molten resin has
Help improve Injection Molding, reduce injection pressure, it is to avoid the problem such as misrun and tired gas, improve product matter
Amount and intensity；And by the quickly cooling after molding, it is also possible to reduce shrinkage stress, make the demoulding become easy.
It also can make the heavy wall injection molding cycle reduce about 60-70% simultaneously.
For making more in understanding, three below embodiment further illustrates the concrete of high-surface gloss traceless injection molding process
Step and the benefit brought thereof.
Embodiment one:
Select materials: ABS/PC and GF is as injection resin material in selection, wherein, the weight of ABS/PC and GF
Amount ratio is 50:1；
Drying: ABS/PC and GF carries out drying and processing, drying temperature is 115 degrees Celsius, drying time
It it is 3 hours so that it is humidity drops to less than 0.01%；
Preheating: preheat mould, preheating temperature is 85 degrees Celsius, and preheating time is 1 hour；
Matched moulds: be passed through, in the mould after preheating, the high-temperature water vapor that temperature is 175 degrees Celsius, make mould temperature
Spending moment reaches 130 degrees Celsius；
Injection: inject in mould through drying and processing and ABS/PC and GF under being in molten condition, note
During penetrating ABS/PC and GF, maintaining mold temperature is 130 degrees Celsius, after completing injection, by high-temperature water
Steam discharges mould；
Cooling: be passed through the cooling water that water temperature is 5 degrees Celsius in mould, make mould be rapidly cooled to 20 and take the photograph
Family name's degree, ABS/PC and GF under molten condition shapes formation finished product in a mold；In cooling procedure, to mould
Tool carries out pressurize, and dwell pressure is maximum pressure in molten condition ABS/PC and GF injection mold process
70%, the dwell time is 0.5 hour；
Remove cooling water: in mould, be blown into the pressure-air that pressure is 0.6Mpa, discharge cooling water；
Die sinking: finished product is ejected by mould, takes out finished product.
After testing, finished surface weldless trace, ripple and filamentary silver stricture of vagina and material stricture of vagina, surface without shrink, good luster,
Surface smoothness reaches minute surface, without warpage and shrink mark, is of the required size.
Embodiment two:
Select materials: select PMMA/ABS and CF as injection resin material, wherein, PMMA/ABS and CF
Weight ratio be 50:1；
Drying: PMMA/ABS and CF carries out drying and processing, drying temperature is 115 degrees Celsius, during drying
Between be 3 hours so that it is humidity drops to less than 0.01%；
Preheating: preheat mould, preheating temperature is 85 degrees Celsius, and preheating time is 1.5 hours；
Matched moulds: be passed through, in the mould after preheating, the high-temperature water vapor that temperature is 177 degrees Celsius, make mould temperature
Spending moment reaches 140 degrees Celsius；
Injection: inject through drying and processing and PMMA/ABS and CF under being in molten condition in mould,
During injection PMMA/ABS and CF, maintaining mold temperature is 140 degrees Celsius, after completing injection, by height
Temperature steam discharges mould；
Cooling: be passed through the cooling water that water temperature is 5 degrees Celsius in mould, make mould be rapidly cooled to 30 and take the photograph
Family name's degree, PMMA/ABS and CF under molten condition shapes formation finished product in a mold；In cooling procedure, right
Mould carries out pressurize, and dwell pressure is maximum pressure in molten condition PMMA/ABS and CF injection mold process
75%, the dwell time is 0.5 hour；
Remove cooling water: in mould, be blown into the pressure-air that pressure is 1.1Mpa, discharge cooling water；
Die sinking: finished product is ejected by mould, takes out finished product.
After testing, finished surface weldless trace, ripple and filamentary silver stricture of vagina and material stricture of vagina, surface without shrink, good luster,
Surface smoothness reaches minute surface, without warpage and shrink mark, is of the required size.
Embodiment three:
Select materials: selection high-light ABS material and MF are as injection resin material, wherein, high-light ABS material
The weight ratio of material and MF is 50:1；
Drying: high-light ABS material and MF carry out drying and processing, drying temperature is 115 degrees Celsius, dries
The dry time is 3 hours so that it is humidity drops to less than 0.01%；
Preheating: preheat mould, preheating temperature is 85 degrees Celsius, and preheating time is 2 hours；
Matched moulds: be passed through, in the mould after preheating, the high-temperature water vapor that temperature is 180 degrees Celsius, make mould temperature
Spending moment reaches 150 degrees Celsius；
Injection: inject in mould through drying and processing and the high-light ABS material under being in molten condition and
MF, during injection high-light ABS material and MF, maintaining mold temperature is 150 degrees Celsius, completes injection
After, high-temperature vapor is discharged mould；
Cooling: be passed through the cooling water that water temperature is 5 degrees Celsius in mould, make mould be rapidly cooled to 40 and take the photograph
Family name's degree, high-light ABS material under molten condition and MF shape formation finished product in a mold；In cooling procedure,
Mould is carried out pressurize, and dwell pressure is that molten condition high-light ABS material and MF inject in mold process
The 80% of high pressure, the dwell time is 0.5 hour；
Remove cooling water: in mould, be blown into the pressure-air that pressure is 1.6Mpa, discharge cooling water；
Die sinking: finished product is ejected by mould, takes out finished product.
After testing, finished surface weldless trace, ripple and filamentary silver stricture of vagina and material stricture of vagina, surface without shrink, good luster,
Surface smoothness reaches minute surface, without warpage and shrink mark, is of the required size.
Upper described only embodiments of the present invention, are not limited to the present invention.For this area skill
For art personnel, the present invention can have various modifications and variations.All interior institutes in spirit and principles of the present invention
Any modification, equivalent substitution and improvement etc. made, within all should being included in scope of the presently claimed invention.
Claims (7)
1. a high-surface gloss traceless injection molding process, it is characterised in that comprise the steps:
Select materials: select in PC, ABS/PC, PC/PMMA, PMMA/ABS, PC/GF and high-light ABS material
A kind of as injection resin material；
Dry: above-mentioned resin material is carried out drying and processing so that it is humidity drops to less than 0.01%；
Preheating: preheat mould, preheating temperature is 85 degrees Celsius, and preheating time is 1～2 hour；
Matched moulds: be passed through high-temperature water vapor in the mould after preheating, make mold temperature moment reach more than above-mentioned
The flow temperature of resin material deformation, wherein, the temperature of the high-temperature steam being passed through is 175～180 degrees Celsius；
Injection: inject in mould through drying and processing and the resin material under being in molten condition, complete note
After moulding, high-temperature vapor is discharged mould；
Cooling: be passed through cooling water in mould, make mould be rapidly cooled to 20～40 degrees Celsius, molten condition
Under resin material shape in a mold formation finished product；
Remove cooling water: in mould, be blown into pressure-air, discharge cooling water；
Die sinking: finished product is ejected by mould, takes out finished product.
High-surface gloss traceless injection molding process the most according to claim 1, it is characterised in that:
In described baking step: drying temperature is 115 degrees centigrade, and drying time is 3 hours.
High-surface gloss traceless injection molding process the most according to claim 1, it is characterised in that:
In described matched moulds step: mold temperature moment reaches 130～150 degrees Celsius.
High-surface gloss traceless injection molding process the most according to claim 3, it is characterised in that:
In described injection step: during resin material injection, mold temperature is maintained to be not less than 130 degrees Celsius.
High-surface gloss traceless injection molding process the most according to claim 1, it is characterised in that:
In described cooling step: in cooling procedure, mould being carried out pressurize, dwell pressure is molten condition tree
Fat material injects in mold process the 70%～80% of maximum pressure, and the dwell time is 0.5 hour；Be passed through is cold
But the water temperature of water is 5 degrees Celsius.
High-surface gloss traceless injection molding process the most according to claim 1, it is characterised in that:
Described removing cools down in water step: the pressure of the pressure-air being blown in mould is 0.6 to 1.6MPa.
7. according to the arbitrary described high-surface gloss traceless injection molding process of claim 1～6, it is characterised in that:
Described select materials in step, the resin material chosen also include GF, CF or MF, wherein, PC, ABS/PC,
A kind of and GF, CF or MF of being added in PC/PMMA, PMMA/ABS, PC/GF and high-light ABS material
Weight ratio be 50:1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610428508.0A CN105835300A (en) | 2016-06-15 | 2016-06-15 | High fineness and no-weldlines injection moulding process |
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| CN201610428508.0A CN105835300A (en) | 2016-06-15 | 2016-06-15 | High fineness and no-weldlines injection moulding process |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106393559A (en) * | 2016-11-26 | 2017-02-15 | 滁州市荣康塑料制品有限公司 | Specular no-mark injection molding process |
| CN106543636A (en) * | 2016-11-26 | 2017-03-29 | 滁州市荣康塑料制品有限公司 | Cold-resistant ABS tank materials of a kind of high-impact and preparation method thereof |
| CN106947209A (en) * | 2017-03-28 | 2017-07-14 | 昕亮科技（深圳）有限公司 | High-light no-trace ABS/PMMA materials and preparation method thereof |
| CN109157096A (en) * | 2018-09-07 | 2019-01-08 | 宋东 | A kind of magnetism nail and its manufacture craft |
| CN110480937A (en) * | 2019-08-01 | 2019-11-22 | 江阴市羽项汽车饰件有限公司 | A kind of superelevation flatness liquid crystal display supporting surface plate injection moulding technique |
| CN111055465A (en) * | 2019-10-31 | 2020-04-24 | 惠州市新智源模具科技有限公司 | Mold temperature and pressure control injection molding process and control system for highlight injection molding part |
| CN112873767A (en) * | 2020-12-25 | 2021-06-01 | 常熟市佳德汽车零部件有限公司 | Production process of external covering protection piece of motorcycle engine |
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| CN106393559A (en) * | 2016-11-26 | 2017-02-15 | 滁州市荣康塑料制品有限公司 | Specular no-mark injection molding process |
| CN106543636A (en) * | 2016-11-26 | 2017-03-29 | 滁州市荣康塑料制品有限公司 | Cold-resistant ABS tank materials of a kind of high-impact and preparation method thereof |
| CN106947209A (en) * | 2017-03-28 | 2017-07-14 | 昕亮科技（深圳）有限公司 | High-light no-trace ABS/PMMA materials and preparation method thereof |
| CN106947209B (en) * | 2017-03-28 | 2019-02-22 | 昕亮科技（深圳）有限公司 | High-light no-trace ABS/PMMA material and preparation method thereof |
| CN109157096A (en) * | 2018-09-07 | 2019-01-08 | 宋东 | A kind of magnetism nail and its manufacture craft |
| CN110480937A (en) * | 2019-08-01 | 2019-11-22 | 江阴市羽项汽车饰件有限公司 | A kind of superelevation flatness liquid crystal display supporting surface plate injection moulding technique |
| CN111055465A (en) * | 2019-10-31 | 2020-04-24 | 惠州市新智源模具科技有限公司 | Mold temperature and pressure control injection molding process and control system for highlight injection molding part |
| CN112873767A (en) * | 2020-12-25 | 2021-06-01 | 常熟市佳德汽车零部件有限公司 | Production process of external covering protection piece of motorcycle engine |
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Application publication date: 20160810 |