Azad Industries

Address: 12, Pushporaj Saha Lane, Lalbagh, Dhaka-1211               Phone: +88-01911-355520               E-mail:

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Mould Designing

In order to let more people understand the process, Azad Industries will share the experience and process of the industry, so that everyone can have a deeper understanding of mold design to promote the follow-up project.

Mold design is a basic but important part in molding, regardless of the size and position of the gate, the size of the shear edge, flow assist, cooling and ejector technology, all affect the final mold results. It is no exaggeration to say that mold design has a significant impact on the cost-effectiveness and quality of molded parts and your products.

The mold design is started with a 2d layout, basic information will be drawn out, such as mold size, gating type, parting line, ejection way, cavities layout, mechanical design, accessories used, steel of each component used, etc.

3D design in detail and NC programming will follow after the 2d design is approved by the customer. Depends on the complexity, a complete mold design would need 3-7 days. Some of the complex molds require mold flow analysis or several updates as per feedback from the customer, it could take much more time.

There are many other design issues that must be considered in the design of the molds. Firstly, the mold must allow the molten plastic to flow easily into all of the cavities. Equally important is the removal of the solidified part from the mold, so a draft angle must be applied to the mold walls.

The design of the mold must also accommodate any complex features on the part, such as undercuts or threads, which will require additional mold pieces. Most of these devices slide into the part cavity through the side of the mold and are therefore known as slides or side-actions.

The most common type of side-action is a side-core which enables an external undercut to be molded. Other devices enter through the end of the mold along the parting direction, such as internal core lifters, which can form an internal undercut. To mold threads into the part, an unscrewing device is needed, which can rotate out of the mold after the threads have been formed.

Building a high-quality mold is the core focus of Eco molding. We have 10 highly experienced mold designers, who have significant experience in resin characteristics, and mold structure.

Before we start a design, our designer will run a Mold Flow Analysis, This analysis is reviewed by the designer, together with a tool shop and molding shop. This avoids potential manufacturing issues and provides an opportunity for troubleshooting.

The collaboration of our departments provides a strong guarantee that Eco molding can provide high-quality mold in short lead-time.

Azad Industries offers you the plastic industrial design service, the plastic design is able to start from an ideas, a picture, a draft or improved from a solid sample. When you need a plastic industrial design, and you only have the idea of the products function. After you tell us your products function, products consumer group, products innovating mentalities. Azad Industries can help you to work out one ideal 3D plastic industrial design. The processing steps are listed as below:

Analyzing your plastic industrial design requirements.

It is necessary that you tell us why you want to design such a product, because we need this to analyse the market, function. Only in this way, we can find the products shape and can have the inspiration to work out a super design.

Draft shape for your choice.

After we got your necessary information, our teams will work out the shape draft for your choice. Normally, we will work out 3 or even more drafts for your choice. If you think any of our suggestions are good, then we will start the next step.

Design renderings.

Based on your selection of the draft shape design, we will work out the solid 3D design and make the design into renderings for your reference. After the confirmation of the design renderings we will forward to the next step.

Inner parts dimension

Due to most of our products has the inner PCB board, mechanical components or other related function parts, we need all the dimensions to internal precise designs and then fix the external size of the products.

Based all above steps, Azad Industries will offer you all the information of the products dimension, components material suggestion, packaging suggestions, we even can help your packaging solutions from design to the sampling.

Please contact us for plastic industrial design service, we are sure that you will be satisfied. For the plastic industrial design, we have the customers such as Media in China, Anyfix in German, Fagor in Spain, ABB in USA.

Currently, the plastic mold industry is faced with fierce competition. The mold cost and molding price have become a topic of great concern to every mold maker. Plastic mold manufacturers must consider how to lower the cost while ensuring high efficiency in the mold design process. How can we achieve this target? When designing a plastic mold, the following factors need to be taken into consideration:

Molding Cost: 

Determine product arrangement and the number of cavities according to the size of the machine and the cost of each shot. The larger the number of products ejected, the lower the molding cost, because in the plastic molding process, the cost is calculated by the number of shots.

Product Appearance: 

Determine the parting surface according to the appearance requirements of a product. The location of the parting surface has to facilitate mold processing, venting and mold release, etc. The more cavities, the more likely for appearance problems to occur.

Gate Type: 

Determine the shape, size and venting orientation of the sprue and runners. Hot runner molds cost a lot but save on runner material. Each type has its own advantages and disadvantages, depending on how the user decides.

Mold Release: 

Determine the ejection method and the placement of ejector pins. The more the ejection pins, the higher the mold cost.

Plastic mold design also involves the considerations on product shrinkage and time, as well as the determination of the cooling/heating method and the placement of the cooling channel. In addition, consider the service life of the mold, determine the hardness, thickness, size and processing difficulty of the mold material, and identify the splitting of the molding parts and the shape of the wire cutting structure. As long as all the above steps are integrated, with more comprehensive analysis and considerations made, the cost can be effectively saved.

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