benedictmillworks.com Benedict Millworks, a custom millwork company shows how their custom molding is made with the use of their Moulder.
August 14, 2010
Moulder cutting custom molding – BENEDICT MILLWORKS
August 11, 2010
Chinese moulder to go public on US stock exchange
Chinese moulder to go public on US stock exchange
Hong Kong-based electronics injection moulder Plastec International Holdings will go public on a US stock exchange following a $73.4m deal with a Cayman Islands-based holding company.
Read more on Plastics and Rubber Weekly
August 5, 2010
Gear Manufacturing & Custom Molding
Jrlon – Experts in the Molding, Machining, Bonding and Coating of Fluoropolymers
July 30, 2010
July 18, 2010
Custom Injection Molding Process and advantages
Injection Molding is a process by which most plastic solid materials are produced. We have dedicated and experienced designer’s team having knowledge in tool design, custom injection molding and designing of core cavities for dies and molding.
Custom injection molding has always been a fast moving, disordered and demanding business. Now a day, despite the competition and tight margins it also has a potential for profit. You want to succeed, you see the possibilities, but the global pricing and high expenses make it very difficult.
What is the process of Injection molding?
The first step is plastic heated till it melts during the process of plastic injection molding. The mold can make by using any metal like steel or aluminum. The molten form is then allowed to cool down and set into a solid form. The plastic material thus formed is then retrieved out of the mold.
Next is the actual injection of the melted plastic. The plastic usually begins this process as pellets that are put into a large hopper. The pellets are then fed to a cylinder; here they are heated until they become molten plastic that is easily forced into the mold. The plastic stays in the mold, where it is being clamped under pressure until it cools.
The next couple of steps consist of the dwelling phase, which is basically making sure that all of the cavities of the mold are filled with the melted plastic. After the dwelling phase, the cooling process begins and continues until the plastic becomes solid inside the form. Finally, the mold is opened and the newly formed plastic part is ejected from its mold. The part is cleaned of any extra plastic from the mold.
The Factors involved in the Custom Injection Molding process are :
• The pressure of injection can be changed to change the hardness of the final product.
• The thickness of the mold also governs the quality of the article produced.
• The temperature for melting and cooling determine the quality of the plastic formed.
Advantages of Custom Injection Molding
There are so many advantages of using custom injection molding process. The major advantage of injection molding is that it is very reliable and cost-effective. Also, this process produces smooth and finished products that require no further finishing.
• Substantial cost savings due to availability of skilled 3D professionals at lower cost
• High Quality standards are maintained
• Quick Turn around Time
• Reduces capital costs of infrastructure
• Attractive Advanced technology
• Increased capacity for business expansion and diversification
• Improve employee satisfaction with higher value addition jobs
• Allows you to focus on core business
• Saving in human resources
To get more information about injection molding, you may visit us at http//www.mechanical3dmodelling.com. If you have query about Custom Injection molding, please email us at: info@mechanical3dmodelling.com
Author’s Name: Steve Jack
Link:http//www.mechanical3dmodelling.com
Email:info@mechanical3dmodelling.com
July 6, 2010
Can recycled PET plastic flakes be remolded via injection molding?
I was wondering if I could recycle my old soda bottles by cleaning them and crushing them into flakes, then melt them and inject the plastic into molds. I’m just not sure about the properties of PET though.
June 30, 2010
Injection Molding Plastic
Plastics are synthetically produced non-metallic compounds. It can be molded into various forms and toughened for commercial use. Plastic molding products can be seen everywhere. Examples are jars, protecting caps, plastic tubes, grips, toys, bottles, cases, accessories, kitchen implements and a load more.
Come visit us right here for more Rapid Prototype Info and get two Prototyping Ebooks Injection Manufacturer Molding Plastic.
http://www.prototypezone.com/
Even the keyboard and the mouse that you use are made thru plastic molding. Even the plastic parts of the chair that you are sitting on are created this way.
The basic idea in plastic molding is inserting molten liquid plastic into a prepared formed mold, for instance the mold of a bottle. It is going to be then allowed to cool, then the mold will be removed to bare the plastic bottle.
Plastic molding can also custom-mold a wide variety of plastic products including : garden pots, cupboards, office trays and boxes, barriers, barricades and traffic signage and displays for product and selling promotions.
If you are planning to go into plastic molding business, you should first know the different processes. Choose from a plastic molding process that fits your position, your expertise, and your resources. Here are basic definitions of various techniques of plastic molding.
The Plastic Molding Processes :
1. Injection Molding
In Injection Molding, liquified plastic is forced into a mold hole. Once cooled, the mold can be removed. This plastic molding process is sometimes used in mass-production or prototyping of a product. Injection molding machines were made in the 1930′s. These can be employed to mass produce toys, kitchen implements, bottle caps, and cell phonephone stands to name a couple.
two. Blow Molding
Blow molding is like injection molding except that hot liquid plastic pours out of a barrel vertically in a molten tube. The mold closes on it and forces it outward to comply with the inside shape of the mold. When it is cooled, the hollow part is made. Examples of blow molding products are bottles, tubes and boxes.
Equipments required in setting-up a blow molding business are comparatively higher than injection molding.
3. Compression Molding
In this kind of plastic molding, a slug of hard plastic is pressed between 2 heated mold halves. Compression molding usually uses vertical presses rather than the horizontal presses used for injection and blow molding. The parts formed are then air-cooled. Costs of equipments used for compression molding are moderate.
four. Film Insert Molding
This plastic molding technique imbeds an image beneath the outside of a molded part. A material like film or fabric is inserted into a mold. Plastic is then injected.
5. Gas Assist Molding
Also called gas injection molding is used to create plastic parts with hollow interiors. Partial shot of plastic is then followed by hi-pressure gas to fill the mold cavity with plastic.
Come visit us right here for more Rapid Prototype Info and get two Prototyping Ebooks Injection Manufacturer Molding Plastic.
http://www.prototypezone.com/
Come visit us right here for more Rapid Prototype Info and get two Prototyping Ebooks Injection Manufacturer Molding Plastic.
http://www.prototypezone.com/
June 24, 2010
Prototype Injection Molding, Thermoplastic Injection Molding, Injection Molds
Hobart, Washington USA (Articles Base) July 15, 2008
The Prototype Injection Molding and Injection Molds Services is a new webpage that was just added to the new Rapid Prototyping Information Website that has just been released. This new Prototype Injection Molding Process webpage has all of the information you need to know on Injection Prototyping and Thermoplastic Injection Molding and the main information you need to know on Prototype Injection Molding. You can visit this Thermoplastic Injection Molding Services webpage at: http://www.prototypezone.com/plastic-injection-molding/
Here is an excerpt from the new Thermoplastic Injection Molding and Molds webpage:
“Rapid Prototyping is the process of automated manufacturing of physical components using solid freeform fabrication. They are used in a wide range of applications, everything from medical to fine art. Rapid Prototyping machine works by taking virtual models from software and then converting it into extremely thin, horizontal cross-sections and then goes onto create each of the cross-section in physical space in a cyclic manner until the model is completed. Rapid Prototyping is a WYSIWYG process in which the virtual model bears identical resemblance to the finished physical model. Additional fabrications allows the machine to lay down layers of sheet, liquid or powder material and build up a series of cross-sections These layers are finally automatically fused together to render the final product.
The main advantage of rapid prototyping is the ability to create any shape no matter how complex the geometry is. The commonly used data interface between the machine and the software is the STL format. It works by approximating the geometry of a part using triangular facets, smaller the facets higher will be the surface quality. The word “rapid” is used relative top conventional methods which take days to construct a model depending upon its complexity. Rapid prototyping can create the model within a few hours, though it is highly dependent of the type of machines and the size of the model. There have been several new technologies available for rapid prototyping including Fused Deposition Modeling, Selective laser sintering, 3D printing, and Electron Beam Melting.”
The new Thermoplastic Injection Molding page is free information to members and non-members and can be found at: http://www.prototypezone.com/injection-molding/. However, users of Prototype Zone who decide to be members can join for free and receive two free E-Books on Rapid Prototyping for a limited time offer. Prototype Zone will be adding new information all the time on Rapid Prototyping so check back often in the forum and blog for the latest information at: http://www.prototypezone.com/plastic-molds/
About Prototype Zone: Prototype Zone is the leading information source and community website for all things about Prototyping and Rapid Prototyping. Visit the website to join for free and receive two free ebooks on Rapid Prototyping for a limited time offer.
Author: Ryan Rounder, Director of PR
Email: Pressreleases@prototypezone.com
Website URL: http://www.prototypezone.com
Phone: 425-503-8401
City/State: Seattle, Washington
June 3, 2010
Custom Molding
Osprey Argon, Xenon, Aether and Ariel backpacks offer a full custom fit including custom heat molding for the BioForm CM A/X and IsoForm CM hipbelts. Look for our bright red custom molding hipbelt ovens and the CM Certified logo at your favorite Osprey dealer.
April 19, 2010
Rotational Molding – Seamless Manufacturing Method For Millions of Products
There are so many common products we take for granted in everyday life. While it’s true that many urban kids don’t know that milk comes from cows or what a real wheat field looks like, the same is true for manufactured products that are mainstream to life in America.
How about the garbage bin outside your home, the bright orange road cones used for road safety, bicycle helmets and giant tanks used for water storage? Chances are these disparate products were made using a popular manufacturing method called Rotational Molding. What they have in common is a hard, continuous outer shell and a hollow space inside.
The Process
Rotational molding was an innovation of the 1940s, but wasn’t widely used until the development of better technology that made the process faster. In addition, new polymer and plastic products entered the marketplace and were well suited for rotational molds. This method of molding plastics has several advantages over some other techniques which result in higher prices for products and a less environmentally friendly process.
The first step in producing a lightweight and affordable polyethylene (plastic) product is to create a mold. This is usually done using a computer software program capable of creating three dimensional images. The mold is most often made of aluminum because the lightweight material is easier to handle than some other metals although it may be a bit more costly. Machinists get to work tooling the mold from the design. Once the mold is done, the rest of the process is in the hands of the plastics manufacturer where the rotational molding is done.
Here’s where some imagination is required. Picture the ride at the State Fair where a person is strapped into a kind of gyroscope that turns them up, down, sideways and around. That’s what will happen to the mold. But first, the manufacturer measures polymer resin, a granular powder, and pours it into the mold. The mold is fitted into place in an oven that’s heated to an appropriate temperature. Inside the oven, the mold makes its axial turns, spreading the grains of polymer evenly over the inner surface of the mold.
As the aluminum quickly heats up, the resin melts and continues to coat the inside of the mold. The time the mold spends spinning and heating is critical to the quality of the product. In the past it was up to the rotational mold experts to judge when a mold was ready to remove from the oven and cool. Today, sensitive instruments gauge the air temperature in the mold, improving quality control.
Fans are often used to help the mold cool. Unlike some other mold methods – such as injection molds – the cooling of the aluminum causes the mold to shrink slightly away from the interior of the mold. This allows easy removal of the largest products, such as water tanks. The product is then carefully inspected by the rotational manufacturer and, if it meets all specifications, is shipped to the customer.
Molding Benefits
For many products, rotational molding makes a big difference in the price of a product and in its durability. The manufacturing process does not require lots of interlocking and moving parts. Therefore, maintenance is minimal as is replacement of parts. In addition, there’s little waste of material, a factor that makes the process more environmentally sound.
Durability of products is also very important to manufacturers, particularly those marketing items that will serve customers over extended periods of time. For example, a water tank produced with the rotational molding process will provide much longer service than a comparable steel tank. Rotational molds can be made to any specification or shape, and can be manufactured in less time than steel. They are also very lightweight, cost less to transport and are not as challenging or awkward to install onsite. Of course, a big advantage to molded tanks is that, unlike steel, they will never rust.
Next time you see a one-piece, hollow product made of polymer plastic (maybe a kayak or the face of a doll) astound your friends with the fact that you know just how it was done – with the rotational molding process.
Visit us for additional information on rotational molding and rotomolding equipment.