Klarm Mould Blog

What Are The Purposes Of Hot Runner In Making Plastic Injection Molds?

12/14/201812/14/2018Klarm Mould

Basically, the injection molding process has been used the traditional way, which is known as the cold runner system. Nowadays, another method is getting popular. It’s known as the hot runner system. In this process, liquid substrate is put into the mold via a nozzle. So, the runner is kind of a passage through which the material travels. During the process, the substrate doesn’t cool down or get hard. Let’s find out why most people go for the hot runner for their plastic injection molds.

During a hot runner process, the mold is heated up and then cooled down once all of the cavity is full. Remember: the hot runner process may use many ways to heat up the injection mold, such as hot oil, hot water, induction/steam heating for quick heating. Unlike the cold runner system, this system cause fewer issues.

Now, let’s discuss why people go for the hot runner system in the injection molding process.

Less waste: This is an important point. In the hot runner system, the substance that passes through the chambers remains hot even when it reaches the last stage. In the cold molding, on the other hand, the runner is either discarded (waste) or recycled/reground. This is a disadvantage.

Quick cycle: As said earlier, the runner process requires time and may cause a loss of resource if enough time is not given. By fixing these problems, the hot runner system can boost the cycle times.

Keep in mind that the cooling and heating mold takes more time. Often, the time is offset through the savings from the elimination of the runner. However, it’s better to discuss the topic with your service provider.

Quality output: the removal of runners from the cold molded components requires a mechanical process. The product may get rejected if it is not up to the mark. In other words, the look and function of the product should be acceptable.

On the other hand, the hot molding can help resolve many issues, such as surface irregularities and burn marks, just to name a few.

Lower costs: cost is an importance consideration when opting for a cold or hot molding for a long-term. The initial cost of cold molding is less but the hot the hot runner system is a cost effective option as far as the long-term use is concerned.

Range of material: Actually, the inherent chemical composition of most of injection molding substance makes them a bit too “allergic” to temperature changes. The impact is stronger in extreme temperatures. So, for lower temperatures, the hot runner system is the way to go.

Colorant options: The hot runner system allows you to benefit from colorant mixtures in the process. So, this is another reason people opt for the hot runner process.

Long story short, these are the reasons the hot runner is an ideal choice for the majority of plastic injection mold projects. If you are looking to increase production in an efficient manner, we suggest that you give a go to this process. Hope this helps.

When it comes to hot runner injection mold, china plastic injection molding is the best choice.

Resource box: This article is originally posted in https://www.injectionmouldchina.com.

How to calculate injection molding cost

07/02/2018Klarm Mould

The question is a straightforward one, but there are various things to consider while calculating the cost. Factors like the durability of the mold, shipping cost, material selection, maintenance costs, etc. affects the final cost. The cost differs for every purchaser in different situations. You can go from the lowest to the highest depends on your choice and budget.

The durability of the mold – The injection mold you are choosing for should last for the entire program; if it loses its shape or characteristics then buying it will be just a waste of money. Also making a purchase from a trusted source is better to avoid future complications if the product turns out defective.

Shipping cost – It is a matter of concern for those who are buying mold on a foreign land. Getting it shipped to your workplace could be costly. It can cost a good share of the final price you pay for the product.

Maintenance cost – If you are making purchase offshore then its maintenance is your responsibility and getting it home with safety and looking after requires more money. If something misshapen during shipping then it may affect the product’s productivity. In such conditions, you will be obliged to make another purchase. And precaution is better than cure. It is better to invest a little more in its safety than buying altogether a new one.

Material selection – It is an important factor to keep in mind while selecting. Your payment rate depends upon the type of material you choose. The material should be strong enough to endure all the mechanical pressure it is about to go through.

Roughly the cost of the injection molding is the price finalized on the RFO but apart from this the cost of the mold also includes many factors that cannot be measured. That is the experience of the builder and what technique he is using. If the builder is good at his job and is experienced then work becomes easier and the cost of repeating the cycle again reduces bringing monetary savings. These things are not written on papers, but if you give it a thought then can cost you a good whooping amount. Plus there is always little wiggle room in the final cost of any product. It is better to keep a little sum aside for safety purposes. It will keep you ready in hard situations.

In case if you have already a fixed amount in your mind and don’t want to spend any extra buck then you should tell so to your mold builder. That way the mold will be designed with your instructions and budget in mind. If the number of cavities is higher in every per cycle then the parts will be less expensive allowing higher input. You can also opt for the basic products supplied by you rather than paying for it as part of the final product. Through these small hacks, you could save much money.

Need more insights on injection mold selection and costing then visit https://www.injectionmouldchina.com. They will not only provide you proper guidance but are also makers of best injecting mould in China. Here you will get all the details on China injection molding cost.

ISO 9001 Procedure for Making Automotive Injection Molds

06/22/2018Klarm Mould

The automotive industry is flourishing with the automotive injection molding at a considerable rate. The automotive injection molding gives the benefits of low costs and better consistency. The automotive injection molding had provided with high volume. The speed and the quality are the main aspects to focus on for the molders. A company which has proper ISO 9001 system is well-managed and the business performance is very good. The ISO 9001 is well recognized all over the world in the automotive business. The product is developed after taking reviews from the team to give the best to the customers.

What is ISO 9001?

The ISO 9001 ensures the quality of the products and the companies should maintain the quality of the ISO 9001 certification. There are many standards in the ISO 9000 group where only ISO 9001 is needed to be certified. For the certification, you need to fulfill the conditions in the sections. There are in total ten sections of the ISO 9001. The sections from four to ten cover the area of quality management. The sections include various things related to the business such as the process, standards of the product and risks in the production. The sections also take a look at the scope of the business and the investors. The revised plan of the company is required for the certification of the ISO 9001.

ISO 9001 Benefits and Goals

The companies are always in search of recognized molders for the supply of the products. With the ISO 9001, the employees should be trained in a specific process and they should be documented lawfully. Many automotive injection molds had processes which were not needed in the production and they were identified. The ISO 9001 standard is effective when there are disputes with the customers. The standard drives the molders to the growth and development of the molders. The software and spreadsheets have made it easy for the option of direct business. The companies with the standardized ISO 9001 certification are known to provide customer satisfaction than the companies who do not have the certification. They are also often observed to have higher profit margins in their businesses because of the constant improvements in the technology.

Risk Identification

The ISO 9001 focuses on the risks for the customers as well as for the molders towards reducing the risk factor. Some of the risks include the injuries to the workers which is taken care of very keenly, the standard focuses on the impacts that the business can cause to the environment. It also covers the factor that the employees should be well-trained for the job. The purchasing of the right raw material is important for the quality of the product which should be taken care of. The company has to ensure that everything is documented and this helps to identify some of the challenges for the company.

The automotive mold china maker is ISO 9001 standardized with high-quality products. The injection mold China company has been manufacturing various parts across the country as well as in the global market. China plastic injection molding is highly trusted by the customers.

The original source of this article is from https://www.injectionmouldchina.com.

THE IMPORTANCE OF MOLDING FLOW ANALYZE BEFORE MAKING INJECTION MOLDS

05/21/2018Klarm Mould

The injection mold is a method by which parts of an object is produced on large scale. Possibly the pen kept on the table near you is made through injection molding. Injection mold maker in China and countries expert in this technique have a good hold over manufacturing sector. There are many processes throughout the injection molding, which requires analyzing the cost, time and raw materials. One of the important pre-molding processes would be molding flow analysis.

Molding flow analysis helps to examine mold design thoroughly. It is pre-analysis of the product manufacturing process with the help of software. Molding flow tries to come to a pre-conclusion of the temperature required to melt the plastics or steel, of the amount required to fill in the cavity and deciding the wall thickness of the object. For example, if due to any reason the wall of the object is too thick it would not cool properly and there would be sink marks that will not look good.

Molding flow analysis is a pre-manufacturing process which not only reduces the cost, it saves the time of the organization and it helps to manufacture parts, objects in a successful way. Suppose without a flow analysis if a prototype is manufactured and it shows some fault, then it needs to be started all again. The design of the tool needs to be changed and there would be enormous wastage of time and energy. Therefore, to control all these mishappenings a molding flow analysis is done.

A company expert in this technique of mold, injection considers flow analysis a necessary pre-requisite. There are various manufacturing companies which are an expert in 3D designing of objects and they are also an expert in designing tool according to the desired wishes. That is why Southeast countries molds and supplies the parts in all over the world especially North America and Europe.

Now, coming again to the molding flow analysis, it examines the flow of melted metal or plastic through channels and tells the quantity to be added or to reduce before manufacturing the parts. It is easy to cut the metal scrap from the object, but it is very hard to add metals due to their characteristics into the parts. For that, a whole new design is carved for the tool which overruns the manufacturing cost and time. All these problems can be averted through proper mold flow analysis.

Injection molding is altogether an expert technique which requires technical knowledge and years of experience in the field. Southeast Asia is considered such an expert especially in plastic injection molds and it is aptly called as an injection molding hub. It supplies, parts being used in healthcare equipment, automotive, electronics and home appliances. Almost everything is being manufactured in countries of this region through injection molding.

Injection molding has made the process of manufacturing an easy task compared to earlier days where the heavy objects were manufactured in one go and where the technologies like flow analysis were not common. Injection molding has turned the pace of economy in a great way.

Original source is from https://www.injectionmouldchina.com, which is a professional plastic injection mold maker in China. China injection molding is considered to be the best in the world.

Difficulties of making injection molds of transparent plastic products

05/04/2018Klarm Mould

Making injection mold is a difficult process. Even small mistakes can cost you almost a fortune. Such work should be done with immense attention and prior experience. While making, injection molds one faces many problems like the machine, the mold, but most of the trouble arises due to the plastic. Many people today are opting for plastic and its demand is increasing, but we cannot overlook the difficulties of transparent plastic products in making injection molds. Use of plastic in making injection modules is difficult. There are several reasons behind this. First, the process through which the plastic goes through is a tough one. It passes to the heating cylinder from the hopper on the way into the cavity. After facing such dreadful situations, its shape and size are ought to change. Other reasons are that the valve spring may leak or the heater band might be burned.

The kind of plastic you choose for your mold could also create problems. If you choose wrong plastic it can affect your material adversely. In case you think that all plastics are the same, then you are wrong. They are not. It is important to learn first about your material, your work design about it, its peculiarities. Making all these decisions earlier can be of great help and will also save you the trouble of making changes later.

ABS – The ABS plastic which is generally used has the tendency to get scratch or scars that are clearly visible. During the cooling process, it also has problems sinking. And if you use an opaque plastic, then good luck with it.

Glass-filled nylon – Good thing about the glass – filled nylon is that it can resist many harsh solvents that that could damage other plastics like ABS and polycarbonate but its main con that causes problem is that Glass-filled nylon is extremely vulnerable to sinking. The material design is of no help.

Polycarbonate – Polycarbonate’s price is higher than that of ABS. It also has the tendency to sink. And if there is some kind of defect in your material then it can affect the plastic’s performance.

If you want more strength from the plastic, then you can combine the ABS & Polycarbonate for better results.

Next problem you face from the plastic is due to its color. The majority of the colors in which plastic is available only vary between dark brown or black. You don’t have many options to choose from. After its finishing, the outlook and appearance of the product depend on its final color. If you want, then you can have it spray painted, but that will increase your production cost.

Although the final cost of your product depends on all the investment the choice of plastic plays a major part. In general cases the price is low, but in extreme cases, it can revolve around the figure of $10000 to $12000.

If you too want injection mold then you should visit injection mould china factory. They are the best injection mold maker in China. Injection mold china will provide you the best quality molds. You can visit them on the URL given below.

For more information, please refer to https://www.injectionmouldchina.com

How To Make Rapid Prototype Injection Molds

04/24/2018Klarm Mould

Plastic injection molding makes a very good option for people looking for plastic prototypes or few parts for evaluation and testing. In injection molding, molten plastic is forced in a cavity at high pressure to ensure no fills and to open the die. The molding machine applies closing force with the right tooling thus closing up die with temperature cycling and abrasive effect of flowing plastic. To avoid any mistakes that could mean starting over the process can be pretty slow especially for complex geometrics.

Fortunately, there are different manufacturing technologies that compress lead-time for those who want to make or design the plastic prototypes. By looking at the manufacturing options, you will be in a better position to decide what the best way of making rapid prototype molds is depending on the project requirements you are working with. The rapid prototype technologies are never the same and the results may not be the same for all prototypes therefore.

Selective laser sintering

This manufacturing method involves heating of powder till the granules join. SLS is very similar to SLA considering that it makes 3D shape through creating layer by layer using laser plastering over powder for heating. It is however a technology that can be used for both metal and plastic molds and the accuracy levels are impressive. You can actually achieve fully functional parts using this technology as long as porosity is avoided by all means possible.

Fused deposition modeling

This technology of making the rapid prototype molds has the plastic filament extruded using a nozzle onto the support plate or platform before it is then heated to create sticky soft substance. Shapes are then built as necessary by successive layering before the right finishing is done for the final appearance to be achieved. Plastics like polystyrenes, polyamides and polycarbonates are available for FDM and the accuracy rates for this manufacturing method are high although they could vary from machine to machine.

Stereolithography apparatus

It is abbreviated SLA and it is a molding technology that uses UV laser to solidify liquid photopolymer. The laser passes over polymer surface to create a solid layer before the table is lowered to let more liquid cover the solidified layer and then laser scanning is done again. Once done, the SLA molds require washing and sanding for the removal of ridges between layers for enhanced accuracy.

Rapid injection molding

Injection molding is one of the fastest ways of making rapid prototype molds. You can have your parts in days saving you the slow nature of processes like EDM and grinding. The molds may not be that durable compared to hard steel parts but you will have then in same finish, fit as well as performance at reduced time and cost. When considering rapid prototyping, it is important to remember that not all plastics are suitable and the finish, fit and form may not be as good as those achieved by injection molding. As long as you know what the molds are for, you will manage to make the right manufacturing process.

When you work with the right injection mold maker in China, you will indeed have the kind of parts you need at the end of the day. Plastic injection molding China has its benefits and when you are informed it is easier to choose the right path for your prototypes.

For more information, please refer to https://www.injectionmouldchina.com.

How the precision injection molds are made

04/09/201810/11/2018Klarm Mould

In the injection molding process, parts are produced by injecting substances into a mold. Different types of materials, including metals, elastomers, and glasses are used in this process. Let’s know more about the making of precision injection mold.

For making parts, the material is put into a hot barrel where it cools down taking the shape of the mold. Normally, molds are made by expert mold makers using metals, such as aluminum and steel. Now, we will look at the important stages of the mold making process.

China Precision Molding
Injection molding in China is done with the help of the state-of-the-art technology. Expert mold makers manufacture molds that meet the needs of buyers from around the globe. The process uses applied robotics and inspection processes that are automatic. The companies have different precision molding methods that are followed in a controlled environment.

Product & Process Engineering
So, how are the parts and components created and refined? Well, experts make use of computer aided design apps for creating and refining parts. They also offer prototyping, such as SLS and SLA and Urethane Casting. But it depends on the company you are talking about. You have to get in touch with the company to know more about their product and process engineering techniques.

Solid Modeling
In solid modeling, engineers make use of 2D and 3D modeling technology in order to get the work done efficiently. For mold designing and analytical work, like stress analysis and element analysis, experts believe that sold modeling is a very good and cost-effective method. This method is also good for manufacturing stereo-lithography components for rapid tooling and first inspection.

Tool Manufacturing
Aside from solid modeling, the technology makes use of CAM and CAD apps. Aside from this, CNC and EDM technology is also used. The trained workforce is knowledgeable and committed for creating all types of parts and components that you can imagine. The tools can be used in the automotive or medical field, for instance.

Quality Control
As far as quality control goes, precision measurement is on the list of the most important things. The precision measurement of a reliable manufacturer is almost perfectly accurate. The quality control methods and the state-of-the-art machinery ensures that the requirements of the users are met.

Mold Assembly
The expertise and experience of a mold making manufacturer ensures that quality products are made that work according to the requirements of customers. The assembly options offered by most manufacturers are given below:

Applied Automation
Mechanical Bonding
Hot Stamping
Heat Staking
Pad Printing
Ultrasonic Welding
Business Systems Integration

The goal of any manufacturer is the customer satisfaction. And for this, they employ quality improvement processes.

So, this is how the precision injection molds are made. The process makes it a lot easier to make molds that are used to make components and parts. These parts are used in different industries. Even molds are used for making car parts all over the world.

Resource box: This article is originally posted from https://www.injectionmouldchina.com.