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 production costs of making an injection mold

10/10/2018Klarm Mould

With the coming of the modern age, there have been a lot of new techniques that have been developed, but one can safely say that not all of them have been adopted by the industry. There are many reasons for it like they are not eco-friendly, or they can’t be easily automated, but the major reason that leads the way is they are not economically viable. There is no point in appointing a technique to produce something which is not worth the cost that one spent on creating it.

Injection molding is one such technique that has gained the attention of various industries and everyone is talking about it, but the same question still worries everyone, that what is the cost associated with it. In this article, we will try to describe how one can get a rough estimate of how much cost it will be on them once they start implementing the method.

Production rate: – One must have an idea about the product that they are going to make and how many cavities will be in there as it plays an important role in deciding the amount of material required which directly controls the total cost. Another thing that they need to aim for is the number of parts that will be produced in each cycle and the number of cycles in an hour. The larger the number of products produced in each cycle and the number of cycles in an hour, lower the cost of production.
The injection molding material used in each cycle: – It is not a good idea to simply measure the weight of the end product and then decide on how much material do you want. A substantial quantity of material is also scraped and wasted here and there and must be considered as well while calculating the material cost. An idea about the number of cavities that you will be having will also help with this
Other costs: – Other costs include the number of workers that you will be needing to carry out the different manual or automated operations. Workers doing manual work have low wages, but they will be needed in a large number while the workers working on the automated machine are skilled and will have a higher wage as compared to the workers doing manual work. Factors like the idle time of the different machines, post-processing time and the cost associated with giving final touches to the product must also be taken into consideration.

These are just some of the factors that go on deciding what the total cost will look like as they cover the core operations associated. Even the smallest of changes can go on to affect the total amount by a good amount and that’s why one should always aim to find the optimum method so as to balance all the cost involved resulting in the maximum profit that is the main goal.

Since China is the best place for any company to set up their factory, it is important to know about the China injection mold cost and on what factors does this amount depend on.

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

What are the Worldwide standards of plastic injection molds?

08/23/201810/10/2018Klarm Mould

In the modern age, there are more and more upcoming manufacturing methods coming up that are allowing the industry to move in the forward direction at a great pace without compromising on the quality of the material being produced. Injection method is one such manufacturing process that has dynamically changed the whole industry and is being used by most of the major companies.

Injection molding method is the process of making or manufacturing any parts that are being required by injecting the molten material into a mold which is in the shape of the desired material. This technique is usually used with polymers and plastic, but can also be extended to different metals as well. Since this method is now being used by a large number of industries, there should be some standard that must be set at a global level so that the parts can be used all across the world without any tension of it malfunctioning or breaking down in between. There are specific technical specifications of the injection mold standards that need to be attained in order to make your product qualify as being usable. We will be discussing some of the most basic and elementary standards that need to be followed and one can look for a more detailed explanation on the internet afterwards.

Eco-Friendly: – the major reason to devise new techniques for everything these days is to save the environment and that goes for this technique as well. Polymers and plastics have long been ridiculed for their non-biodegradable nature and that’s why their usage has always been debated. Since this method aims to produce parts that will be used in the other industries, it is important to make sure that there is no major cause of pollution that will impact the environment in the long term as well as short term.
Durability: – Since the parts or the products made from injection molds will be used in the industries, they should be durable and long lasting. There is no point in manufacturing something that will break after only some days of use or will fall apart by the application of a small force.
Economical: – One of the major reasons people are trying to find more means and methods to use plastic components in an effective manner is that they are pretty cheap. The product that is being manufactured should be cheap in comparison with the other alternative products that are available in the market.
Automated: – Since we are dealing with molten materials, the automated process should be preferred because of many reasons. First of all is that it will largely reduce the accidents caused while handling molten materials, increase the work rate and save the cost of the workforce as well.

These are only some of the things that are standardized. There are a lot more things like the type of plastics that can be used, minimal smoothness that a product needs to have and many more. One should make sure that they comply with every rule so that they don’t face any difficulty in the near future.

China, having such a large workforce, is an ideal place for the companies to set up their factory and that’s why can find a large number of mold company China that are operating in the region successfully and have created a name for themselves.

Resource box: This article is originally posted from 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.

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.