Showing posts with label Plastic parts. Show all posts
Showing posts with label Plastic parts. Show all posts

10/19/2014

Clear plastic enclosures for electronics manufacturing solution

Clear plastic enclosures for electronics manufacturing solution


We will talk about clear plastic enclosures for electronics manufacturing solution from the design to the manufacturing on this post. We will show you the normal clear plastic enclosures for electronics manufacturing solution, also it is the cost saving and safety solution.


Clear plastic enclosures for electronics designClear plastic enclosures for electronics manufacturing


Clear plastic enclosures for electronics design is similar as the common plastic enclosures design, but you had better to have simple structure inside as possible as the structure inside of the clear plastic enclosures can be saw.  We should consider the mold ejection during clear plastic enclosures design as the worse ejection will leave the ejection pin mark insider of the clear plastic enclosure, it can be saw.


We should consider if we need ejection plate for ejection or ejection pin for ejection during the design, ejection plate for ejection will not leave the ejection mark on the clear enclosure, but we can not have lots of ribs inside of the clear enclosure, otherwise it is not possible to release the part from the mold.  Ejection pin ejection will leave the ejection pin mark on the clear enclosure, we should consider a good position to locate the ejection pin to make sure it affect the cosmetic issue as less as possible.


Clear plastic enclosures for electronics prototype manufacturing solution


Clear plastic enclosures for electronics prototype can be manufactured with plastic casting, CNC machining and SLA prototyping process. We should consider the clear plastic enclosures structure to choose the clear plastic enclosures prototype manufacturing solution. For more, please kindly review our post “Transparent plastic prototype manufacturing” .


Clear plastic enclosures for electronics mold manufacturing solution


Core and cavity steel for clear plastic enclosures for electronics mold manufacturingElectronic clear plastic enclosure manufacturing


This is very important to start the clear plastic enclosures for electronics mold. If you choose the wrong steel, you will waste money and time, sure you will have lots of trouble and have lots of wrong work.


1, If you order quantities is very low, something like 1000pcs each time and total demand is less than 10,000 pcs, you can consider normal steel such as P20, 2311, 2312 and 738 etc. preharden and non-stainless steel.


2, If you demand is more than 10,000pcs, we have to use through hardness 420 stainless steel.  We always suggest to use 420 stainless steel to have the good quality and save time on the polishing times.  Please kindly noted that there are lots of kinds of 420 stainless from different steel supplier.


The other things we should noted on the clear plastic enclosures for electronics mold manufacturing


  • Running the mold flow and have the design for manufacture for clear plastic enclosures to find out if there is possible on flow and injection

  • Use the inserts for the core and cavity as possible as the insert change will save cost than to change a whole cavity or core, please noted plastic make sure this will not affect the cosmetic surface.

  • No welding on the surface core and cavity, otherwise it will be possible to see the defect on the molded clear plastic enclosures.

  • Be careful to manufacture each components of core and cavity, if you made mistake, the remedial measure will less than the common mold.

  • Choose the master to finish the polishing, not save cost on the polishing otherwise you will pay more

  • Check the mold polishing surface before the mold trial

Clear plastic enclosures for electronics molding production


  • You should have same strict quality control for the molding for this kind of molding. But you should pay more attention as below:

  • Clear plastic enclosures surface

  • Clear plastic enclosures welding line check

  • Protect the clear plastic enclosures, you can use the plastic polypropylene sheet to cover the clear plastic enclosures, normally you can buy this common plastic sheet, you can told your plastic sheet supplier this is to use for clear plastic part surface protection. You never use the PVC sheet to protect the clear plastic enclosures, it will make the surface very bad.

 


 


 



Clear plastic enclosures for electronics manufacturing solution

10/04/2014

Transparent plastic prototype manufacturing

Transparent plastic prototype manufacturing


There are a few process to have transparent plastic prototype manufacturing as following:


  • CNC machining process with PMMA

  • Plastic casting process

  • SLA process

  • 3D printing

We can choose transparent plastic prototype manufacturing process based on your demand such as qualities, use and function etc.


CNC transparent plastic prototype manufacturing


This is common widely use transparent plastic prototype manufacturing process. If you need high quality transparent plastic prototype such as plastic lenses, transparent cover and transparent enclosure, transparent enclosure and transparent led lamp enclosure etc. You can choose PMMA CNC machining process.


Sure it is also okay to machining with polycarbonate , but the polishing process is more difficult to control than PMMA, we did not suggest to use this resin to make transparent plastic prototype for  lens or high smooth transparent part.


Plastic casting process


This process to make the RTV silicone mold to cast plastic prototype. You can lean more from our another blog, post is plastic casting prototype . You can also review resin casting on Wikipedia.org.


Plastic casting transparent prototype can be polished too, but it still worse than PMMA CNC machining prototype.


This process can make transparent plastic prototype, the material is not really resin what we used for injection molding, it is cast two kinds of liquid chemical compound into silicone mold to form plastic parts. If you need plastic parts with FDA, please do not consider this process.


Also plastic casting prototype surface finishing is worse than the PMMA CNC machining process, if you need high quality smooth transparent parts, please do not use this process.


Transparent plastic casting prototype is cheapest process to copy transparent parts. Also it can be copied complex transparent plastic prototypes.


SLA to have transparent plastic prototype


SLA rapid prototyping is a discrete layered, layer by layer stacking technology, the direct use of three-dimensional computer data is implemented as a prototype of the product, the more mature laser technology both SLA and SLS rapid prototyping, which the SLA the main material for the photosensitive resin.


SLA rapid prototype’s advantages:

A smooth surface, and good quality.

Forming high precision, and accuracy of 0.1mm;

Can be made very fine details and molding of thin-walled structures, high precision, easy post-processing.

Processing cycle is short, usually it is three days.


SLA transparent prototype manufacturing is weaker than the PMMA CNC machining prototype and transparent plastic casting prototype. Also it is more expensive than both of transparent prototypes. SLA transparent manufacturing process can have complex plastic prototype even if you have lots of undercuts.


3D printing transparent plastic prototype manufacturing


Here we just call the desktop 3D printing prototype. Generally, this process can not get a high quality smooth surface finishing transparent prototype. But the prototype is stronger than plastic casting one.


As the technique developing, we hope this process can be widely use to copy transparent plastic parts. Also right now this process is more expensive than plastic casting prototype manufacturing.



Transparent plastic prototype manufacturing

9/28/2014

Plastic electronic enclosure

Plastic electronic enclosurePlastic electronic enclosure


Seasky Tooling offer custom plastic electronic enclosure manufacturing. We offer following service:


  • Custom plastic electronic enclosure design based your sketch and your idea

  • Custom plastic electronic enclosure budget analysis

  • Custom plastic electronic enclosure design for manufacture analysis

  • Custom plastic electronic enclosure prototype manufacturing

  • Custom plastic electronic enclosure injection mold manufacturing

  • Custom plastic electronic enclosure injection molding

  • Custom plastic electronic enclosure assembly and package

  • No MOQ for custom plastic electronic enclosure manufacturing

  • Reply your inquiry in 12 hours.

Custom plastic electronic enclosure prototype manufacturing


Support to choose most reliable and reasonable solution for custom plastic electronic enclosure prototype manufacturing. Lead time from 3 to 7days based your design. Offer the quotation to you within two days.


Custom plastic cases for electronics mold manufacturingPlastic enclosures electronics


  • Report to your every process for custom plastic electronic enclosure manufacturing progress

  • Mold flow simulation for injection molding to find all of possible for plastic product design and mold design.

  • Weekly report with picture for custom plastic electronic enclosure mold manufacturing.

  • 2D and 3D mold drawing for your approval before custom plastic electronic enclosure mold manufacturing

  • Also we offer easy understand design for manufacture report to communicate for the mold concept and find out the possible issue of product design

  • Molding parameter report for custom plastic electronic enclosure molding trial

  • Samples inspection report

  • Injection mold trial video

  • If you have lots of knowledge for mold industry, we also have easy communication solution to satisfy and communicate with you

Custom plastic electronic enclosure injection molding manufacturingElectronics enclosures plasticCustom plastic cases manufacturing


  • Various color as per your samples or RAL, or Pantone for custom plastic electronic enclosure manufacturing

  • Specializing in thermoplastic injection molding with all type of thermoplastic including ABS(with glass fill), Polystyrene, Polypropylene(with glass fill), Polyethylene(with glass fill), Polystyrene, Acrylic, Acetal, Nylon(with glass fill), PBT(wih glass fill), ASA, PVC, CPVC, UPVC, PC(with glass fill), PC/ABS, PPS, PPA, Elastomers, PPO, POM etc.

  • Surface finishing for custom plastic electronic enclosure molding manufacturing parts: Texture(Mold Tech, Yick-Sang etc.), silk-screen printing, painting and plate etc.

  • Custom package or bulk package are welcome

  • Rely all of your emails in 24 hours. You can call us any time on our working time(Speaking in English)

Custom plastic electronic enclosure trade term


  • EXW, FCA ShenZhen, FOB ShenZhen, FOB HongKong, CIF, DDU


Plastic electronic enclosure

9/20/2014

Plastic product manufacturing based your draft

Plastic product manufacturing based your draft


If you have the plastic product manufacturing and can offer the draft and sketch, also you can not offer the samples. Then below instruction will be helpful for you.


You can offer  following information for plastic product manufacturing quotationPlastic product manufacturing based on your draft


  • Plastic product draft in PDF or JPG etc.

  • If there is more than one product, please do not have all of the product draft on one page, please have one product draft on one page.

  • How many piece you need to order each time for the plastic product manufacturing

  • Tell us the material for the plastic product, if you do not know, please let us know how you will use this plastic product. You can offer document or video to describe. Then we can have the suggestion for the resin to use for plastic product manufacturing.

  • If you have more than one piece of plastic products, you can offer a bill of material. You can have the name, dosage, your idea and description for each part.Plastic products manufacturing China

  • You had better to estimate a whole demand for this plastic product. This is useful for us to choose the mold steel or plastic product manufacturing process. Also this will affect the cost of the plastic product.

  • If you have trouble to tell us how many piece you need order, but you just know how much you will invest this product. You may let us know this information.  Then we can tell you if your invest is enough to start the project.

  • You can have the package information for us. You can also search the picture reference to have instruction for us to think of  the package. Sure we can also offer reference based your words for the package.

  • You can consider the package after the plastic product manufacturing and during plastic product manufacturing. We can offer the package cost separately.

Plastic product manufacturing processPlastic product manufacturing


  • We can offer the plastic product design based on your draft. If it is simple design, we will not charge you.

  • We will send the 3D drawing for your approval

  • We can offer the plastic prototype for your approval. This will have cost

  • We will offer design for manufacturing analysis before mold design, simple and easy understand way to help you understand the mold concept and what the molding process to have the plastic product manufacturing.

  • We will offer the weekly report for the mold manufacturing

  • Updated report and schedule each week for you for production

  • You can inquiry the schedule during manufacturing, we will reply you in 24 hours.

Trade term for plastic product manufacturing


 EXW, FCA ShenZhen, FOB ShenZhen, FOB HongKong, CIF, DDU.


 



Plastic product manufacturing based your draft

9/11/2014

Polycarbonate injection molding parts manufacturing solution

Polycarbonate injection molding parts manufacturing solution


Polycarbonate injection molding resin is one of common engineering resin.


Polycarbonate plastic resin applicationPolycarbonate injection molded instrument gauge meter enclosure


Three major application areas of polycarbonate engineering plastics is a glass assembly industry, automobile industry and electronic, electrical industry, followed by industrial machinery parts, CD, packaging, computers and other office equipment, medical and health care, computers and other office equipment, medical and health care, film, leisure and protective equipment etc.


Polycarbonate can be used as the glass doors and windows, polycarbonate laminates are widely used in protective window bank, embassy, detention and public places, for aircraft cockpit, lighting equipment, industrial safety baffle and bulletproof glass.


Polycarbonate plates can be used for all kinds of signs, such as steam pump dial, dashboard, warehouse and outdoor commercial signs, point type sliding indicator.Transparent molding polycarbonate carmer lens


Polycarbonate resin used in car camera system, instrument panel system and interior system such as front cover, reinforced with automobile front plate, the reflective mirror frame, door sets, operating rod sheath and resistance flow plate.


Polycarbonate is used as a junction box, socket, plug and sleeve, gasket, TV conversion device, connecting line bracket lower communication cable, switch box, telephone switchboard, switchboard element, relay case.


Polycarbonate can be used with low load parts, household appliance used for motors, vacuum cleaners, washing machine, Coffee machine, baking bread machine, power tool handle, all kinds of gear, worm gear, shaft sleeve, guide, the refrigerator shelf.


Polycarbonate is the ideal material for optical disk storage medium.Molded polycarbonate gaute merter cover


Polycarbonate  bottle (container)  have very good performance such as transparent, light weight, impact resistance, high temperature resistance and corrosion solution etc.


Polycarbonate and Polycarbonate alloy can be used as a computer frame, shell and auxiliary equipment, printer parts. Modified polycarbonate with high energy radiation sterilization, boiling and baking disinfection can be used for blood sample apparatus, blood oxygenator, surgical operation instrument and kidney dialyzer etc.


Polycarbonate can be used for helmets, protective masks, sunglasses and sports goggles.


PC film is widely used for printing chart, pharmaceutical packaging, film type commutator.


Polycarbonate injection molding process


This is general polycarbonate injection molding process. During your polycarbonate injection molding, you should read your resin specification, your products and mold design from your polycarbonate molding supplier to set up the injection molding parameter. You can always find the the resin specification on IDES.com












Poly carbonate Drying Before moldingPC resins are hygroscopic and pre-drying is important. Recommended drying conditions are 100 – 120 C (212 – 248 F) for 3 to 4 hours. Moisture content must be less than 0.02% prior to processing.
Polycarbonate Molding Melt Temperature260 – 340 C (500 – 644 F); higher range for low MFR resins and vice-versa
Mold Temperature For Polycarbonate Molding70 – 120 C (158 – 248 F); higher range for low MFR resins and vice-versa, On the PC molding process, we should prepare hot oil supplies or hot water supplies for injection mold temperature control.
Fill PressureAs high as possible for rapid molding
Injection SpeedSlow injection speeds when small or edge gates are used; high speeds for other types of gates

Polycarbonate injection mold manufacturingInjection molding polycarbonate project box


Steel choice for transparent polycarbonate injection mold


You should choose 420 series stainless steel for polycarbonate injection mold. There are lots of kind of 420 series stainless steel. If you need the surface finishing higher than SPI A3, you had better to choose the ASSAB S136 and NAK80. If it is SPI A3, you can choose LKM 420.  You can also see the injection mold steel post on our blog to know more for the mold steel choice.


Steel choice for opaque polycarbonate injection mold


You can choose the mold steel as the normal injection mold. Please be sure that you will not switch to have the transparent plastic molding products from this mold.  Please read more details for the mold steel choice based on mold life on post “plastic injection mold life“.



Polycarbonate injection molding parts manufacturing solution

9/06/2014

Thermoplastic injection molding

Thermoplastic injection molding



What is thermoplastic resin?



Thermoplastic resin is the plastic resin is soft after heating and hardened after cooling. Also the thermoplastic resin can be  recycling after injection molding. The thermoplastic resin is the most common plastic resin used for plastic injection molding and the plastic products used for our industry and life.



There are lots of thermoplastic resin as below:



ABS(with glass fill), Polystyrene, Polypropylene(with glass fill), Polyethylene(with glass fill), Polystyrene, Acrylic,, Acetal, Nylon(with glass fill), PBT(wih glass fill), ASA, PVC, CPVC, UPVC, PC(with glass fill), PC/ABS, PPS, Rubber, PPO, POM, PEEK, PEI, PPA and PPS etc.



What kind of products used the thermoplastic injection molding?









Most of injection molding plastic parts are used this process to make out such as plastic cups, plastic bottle, plastic caps, automotive plastic part(like handles, dashboard plastic part, automobile bumper and automotive seat plastic bracket etc.) , home appliance product plastic part, communicate plastic parts, cameras plastic parts, electronic and electric product plastic enclosure and accessories(like plastic fans, power supplier plastic enclosure, electric shaver plastic enclosure and plastic accessories, plastic socket and electricity meter plastic parts etc.)



Except for thermoplastic resin, is there any the other resin?



On the opposite side, it is the thermoset plastic resin. Normally this resin is solid and soft, and it is not possible to recycle.  The thermoset plastic resin hardened after heating. There are a few thermoset resin as following:



  • Phenol-formaldehyde resin


  • Bakelite


  • Animoplastics


  • Urea-formaldehyde resin


  • Melamine-formaldehyde resin (MF)


  • Melamine-phenol-formaldehyde resin (MPF)


  • Epoxide resin


  • Silicone (liquid or solid)


Normally these resin is to use injection molding or compression molding. On the injection molding process for this resin, there should be cooling near the runner and no heating on the injection machine barrel.



Core business in Seasky Tooling thermoplastic injection molding and thermoplastic injection mold manufacturing



Seasky Tooling core business is thermoplastic injection molding and thermoplastic injection mold making for the international market. We have more than 13 years till now for the plastic injection molding for Europe, America and Oceania etc. Nowadays there are more and more customers from everywhere in the world to order plastic injection mold and plastic injection molded parts from Seasky Tooling





Thermoplastic injection molding

8/26/2014

Silicone rubber parts manufacturing solution with compression molding

Silicone rubber parts manufacturing solution with compression molding


Custom silicone parts manufacturer


Compression molding process is one of reasonable solution to manufacture silicone rubber parts with low mold cost and reasonable unit price. It is commonly to make multi-cavity steel mold to have compression molding production to make silicone rubber products such as silicone gasket, silicone tubes, silicone covers, silicone cases and silicone case etc.


Normally we call compression mold to make the silicone rubber parts as silicone mold. But some of peoples also call the silicone rubber mold to do the plastic casting prototype silicone mold as well, but it is different process.


Silicone rubber parts prototype manufacturing


It is the best solution to make the silicone rubber parts with single cavity silicone compression mold. We can have the reasonable cost on the mold making and silicone prototype. Also the silicone prototype is the same qualify and surface finishing as the production one. This process is cheaper than the rubber plastic casting and 3D printing process to make the silicone rubber prototype.


By using above process, we can also have the secondary manufacturing process such as silk-screen printing, painting ,PU finishing, UV finishing and etching etc.


Tips for Silicone rubber parts quotation from you China rubber parts manufacturer


Custom silicone parts manufacturing


 What kind of information you should offer to your China silicone rubber product manufacturer for quotation?


Silicone molded part drawing in 2D and 3D 


Normally all of the China manufacturer can read the 2D drawing in PDF, JPG, DWG, DXF and BMP format and 3D drawing in IGES, X_T and STEP.


If you have no 2D drawing, you had better to specify the accurate dimension on your document or email. If you have no 3D drawing and just have 2D drawing, you had better to specify the estimated part weight for you China molding manufacturer.


Quantities for the silicone rubber product manufacturing


You had better to offer the quantities based how many piece you should order each time, normally China mold supplier offer the cost based on the order quantities each time. You can also offer the estimated your plastic rubber part estimated life such as how many pieces you need to order in the next five years or ten years.


If it is possible, please specify the the colors for quantities of each order


Silicone keypad manufacturer


Normally this will not affect the price in Seasky Tooling, but the color is changed very frequently for very small quantities, there should be additional cost probably. But during your communication with your China silicone parts manufacturer, you had better to specify this to prevent the misunderstanding and argument during your purchase and cooperation.


Have your China silicone product manufacturer to specify the lead time for silicone mold making and silicone product manufacture


This is very useful for you to arrange your production, you can also let your China silicone product manufacturer know your production schedule.


Specify the shore hardness for your silicone rubber part


As not all kinds of hardness is suitable for the silicone rubber compression molding, normally 50-80 shore should be the best hardness for your China rubber compression molding supplier to handle. For the other kinds of hardness, you had better to check with your rubber supplier to prevent the misunderstanding after your order.  In Seasky Tooling, we checked this out with each inquiry and tell you what we can do. I am not talking about the silicone hardness without 50-80 shore is not possible to make, it have to check for different kind of silicone rubber parts.


 



Silicone rubber parts manufacturing solution with compression molding

Silicone rubber parts manufacturing solution with compression molding

Silicone rubber parts manufacturing solution with compression molding


Custom silicone parts manufacturer


Compression molding process is one of reasonable solution to manufacture silicone rubber parts with low mold cost and reasonable unit price. It is commonly to make multi-cavity steel mold to have compression molding production to make silicone rubber products such as silicone gasket, silicone tubes, silicone covers, silicone cases and silicone case etc.


Normally we call compression mold to make the silicone rubber parts as silicone mold. But some of peoples also call the silicone rubber mold to do the plastic casting prototype silicone mold as well, but it is different process.


Silicone rubber parts prototype manufacturing


It is the best solution to make the silicone rubber parts with single cavity silicone compression mold. We can have the reasonable cost on the mold making and silicone prototype. Also the silicone prototype is the same qualify and surface finishing as the production one. This process is cheaper than the rubber plastic casting and 3D printing process to make the silicone rubber prototype.


By using above process, we can also have the secondary manufacturing process such as silk-screen printing, painting ,PU finishing, UV finishing and etching etc.


Tips for Silicone rubber parts quotation from you China rubber parts manufacturer


Custom silicone parts manufacturing


 What kind of information you should offer to your China silicone rubber product manufacturer for quotation?


Silicone molded part drawing in 2D and 3D 


Normally all of the China manufacturer can read the 2D drawing in PDF, JPG, DWG, DXF and BMP format and 3D drawing in IGES, X_T and STEP.


If you have no 2D drawing, you had better to specify the accurate dimension on your document or email. If you have no 3D drawing and just have 2D drawing, you had better to specify the estimated part weight for you China molding manufacturer.


Quantities for the silicone rubber product manufacturing


You had better to offer the quantities based how many piece you should order each time, normally China mold supplier offer the cost based on the order quantities each time. You can also offer the estimated your plastic rubber part estimated life such as how many pieces you need to order in the next five years or ten years.


If it is possible, please specify the the colors for quantities of each order


Silicone keypad manufacturer


Normally this will not affect the price in Seasky Tooling, but the color is changed very frequently for very small quantities, there should be additional cost probably. But during your communication with your China silicone parts manufacturer, you had better to specify this to prevent the misunderstanding and argument during your purchase and cooperation.


Have your China silicone product manufacturer to specify the lead time for silicone mold making and silicone product manufacture


This is very useful for you to arrange your production, you can also let your China silicone product manufacturer know your production schedule.


Specify the shore hardness for your silicone rubber part


As not all kinds of hardness is suitable for the silicone rubber compression molding, normally 50-80 shore should be the best hardness for your China rubber compression molding supplier to handle. For the other kinds of hardness, you had better to check with your rubber supplier to prevent the misunderstanding after your order.  In Seasky Tooling, we checked this out with each inquiry and tell you what we can do. I am not talking about the silicone hardness without 50-80 shore is not possible to make, it have to check for different kind of silicone rubber parts.


 



Silicone rubber parts manufacturing solution with compression molding

8/23/2014

Rubber parts manufacturing process

Rubber parts manufacturing process


There are a few process to manufacture rubber parts such as compression molding, injection molding and extrusion etc.  You should choose the reasonable manufacture and qualified manufacturing process based your budget, quality and demand. We will talk about the different manufacturing process first as below.


Rubber compression molding for rubber parts manufacturing


Rubber keypad manufacturer Silicone keypad


Rubber compression molding normally used to manufacture heat cured plastic resin such as silicone, EPDM and NBR etc. Sure TPU and TPE have the heat cured series type. Rubber compression parts molding is commonly use to make keypad, phone case, automotive key case, rubber gasket and rubber cap etc.


Rubber compression mold normally have no so complex structure as the plastic injection mold, there is no ejection pins as the injection mold. Sure on the compression mold to manufacture the rigid resin such as bakelite, there is ejection pin and ejection plate as the plastic injection mold. Normally there is only top plate with cavity and bottom plate with core for the compression molding mold. Sure we can make the sliders on the compression mold. On the rubber compression molding process, it is to use the hand to take the rubber part out of mold and have to use the hand to remove the flash from the mold as well.  Except for this rubber compression molding have following advantage:


  • Reduce lots of mold cost compare to injection mold, sometimes the compression mold cost is 1/50 of injection mold cost

  • It is easier to make the complex rubber part even if there is big undercut what you think it is not possible to use the injection mold to manufacture, but rubber compression can make that possible.

  • Use the single cavity compression mold to have the rubber prototype made is very good solution to save cost and have the rubber parts as the quality of production.

  • It is easier to have qualified surface finishing, normally you do not worry about lots of defect you faced on injection molding such as flow mark, jetting mark and short shot etc.

  • Designer have more imaginary space to design the rubber parts as the compression molding process can make the thicker parts out even if the wall thickness is not consistence.

  • It is easier to change color by using rubber compression molding, normally there is no additional cost to change colors

  • Easier to have family mold

More information for the compression molding process, you can review the article “silicone compression molding” understand more.


Rubber injection molding


Rubber injection molding is most like the plastic injection molding. But we should pay more attention to optimize the rubber molded parts ejection system.  Sure the venting system is also very important on injection mold manufacturing. If we can not design a ejection system for the rubber molding mold, then you destroy the ejection system. I Hedy have saw a few guys have the ejection system, but during the production, it is not useful for the ejection.


Rubber compression molding is commonly used to make rubber gasket, rubber end cap, rubber connectors, rubber cap and over molding rubber handle or enclosure parts etc.


If the rubber shore hardness is very low, normally it is not necessary to design the ejection system. So the experience to do the rubber molding production is very important.  I have a few suggestion as below:


  • You had better to use the big ejection pin instead of the small ejection pin, put the ejection pin the area where it is most possible location to ejector the rubber parts out.

  • If it is possible, you had better to use ejector plate with ejector pin. This is to have ejection area for the rubber parts.

  • Use the side gate instead of the sub gate if it is acceptable by your customers. Some of rubber resin is good to use the sub-gate without jetting on the gate, you have to review the resin specification before the mold design.

Before you design or manufacture the rubber injection mold, you have to read the rubber resin specification first. Normally the rubber resin supplier offer the guide for you to design the rubber injection mould.


 Compare the rubber compression molding, what is the advantage of rubber injection molding?


  •  If you have good ejection system, no need to bring the rubber parts from mold with hand, it is possible to have the automatic rubber parts manufacturing.

  • No need to remove the flashes by hand.

Rubber extrusion molding process


Rubber extrusion molding is one of cheap manufacturing to manufacture the rubber tube and rubber gasket etc. For example, your refrigerator door gasket is made by this process.  It is very simple mold to extrude the rubber parts.


There is thermoset and thermoplastic rubber extrusion molding. In South of China, thermoplastic rubber extrusion molding is more than the thermoset rubber extrusion molding


 


 



Rubber parts manufacturing process