Tag: Plastic Injection Mold Build

The Top Benefits of Plastic Injection Molding

The Top Benefits of Plastic Injection Molding

You might already know some things about plastic injection molding, a standout amongst the most well known strategies for mass creating plastic parts. However to review, this technology comprises of pushing plastic material into a warmed barrel. The material is blended and afterward driven into a mold depression, where it solidifies into the final item. Here’s a gander at the best 10 advantages of plastic injection molding:

Terms to Know Regarding Plastic Injection Molding

Terms to Know Regarding Plastic Injection Molding

Plastic injection molding has a dialect all it’s own and with such huge numbers of interesting terms it can be hard to take in the dialect. Here is a list of the best terms to know while talking about plastic injection molding, form parts, materials, and issues. We trust you discover this list to be a helpful asset.

Choosing a Reliable Plastic Injection Molding Company

Choosing a Reliable Plastic Injection Molding Company

Partnering with a plastic injection molding company is a huge step for any business. But there are so many molding companies out there, it can be difficult to know where to start looking. You want to choose only the best plastic molding company that will offer reliable service at a competitive price. You also want a plastic injection molding company that will provide quality parts so your final product lives up to the expectations you had. When you choose a good injection molding company, turning any plastic product idea into a reality will be a goal you can easily achieve. But the opposite is also true, and if you choose the wrong company, you run the risk of losing valuable resources.

Because there’s a good chance that the success of your business hinges on product creation (and therefore also plastic part creation), you’ll need to know what to look for in a plastic injection molding company.


Why Your Choice Matters

As a business owner or manager, you can’t simply assume that another business will be profitable to partner with. Unfortunately there are many businesses out there who simply won’t give you the value for money you deserve.

Choosing a bad injection molding company can lead to all kinds of problems in the future. Problems you can come across in the world of injection molding include:

  • Slow production: Having enough plastic parts produced is essential to keeping your production line flowing so you can sell your finished product to consumers, so when a molding company consistently fails to meet your quota, you’ll soon feel it in your pocket. Why pay for marketing on your product when your molding company can’t produce enough parts for you to meet the demand you’re creating?
  • Faulty parts: Plastic injection molding is a delicate process that requires knowledge, education, skill and experience during part production. If your injection molding company doesn’t invest on getting the right people and tools to do the job properly, you might end up with parts that have weaknesses. If the problem goes unnoticed, this could lead to multiple refund claims from your customers after purchasing your product, all with the same defects and part failure.
  • Bad business relationships: Bad business relationships just aren’t any fun. They can cause unnecessary stress on you and can harm your reputation. When you partner with a good injection molding company, plastic part production will be simple, and feel practically like it’s automated. With the right business working for you, you’ll be able to grow your business and produce more parts later if necessary.

All and all, your plastic injection molding company will play a huge role in your business. You want to offer your customers only the best products, but in order to do so, you need to invest in assembling your final product only with the best plastic parts.

Choosing a Good Injection Molding Company

Now that you know why choosing the right injection molding company is important, it’s time to look at what you can look at to choose a company for your business to partner with.

Some important things to look at when choosing a plastic injection molding company include:

  • Staff education, training and expertise: Even the best tools and materials can’t make up for a lack of expertise. Bad molding techniques could lead to problems, like faulty parts and weak areas in parts that look otherwise fine. Everything from temperature during molding to the polymers used and the plastic injection mold design play a part in the final part, so you want to work only with a company that understands how to successfully mold any plastic part.
  • Quality of plastic injection molds: Just as the best tools can’t make up for it when a company doesn’t have experienced staff, the best staff also can’t produce good parts if a company uses bad molds, or doesn’t put effort into plastic injection mold maintenance. To get the results you want, you need to know what you’re working with when it comes to the molds themselves. A company that neglects maintenance for their injection molds will run molds till they break down. The problem with this is that badly maintained molds produce poor quality parts in the cycles leading up to the mold breakdown. This can once again have a negative influence on the quality of your final product.
  • Target market of company: Different plastic injection molding companies serve different kinds of markets. So while some companies only want to work with very big businesses, others will be willing to take on smaller projects. If you don’t fit the target market of a company, there’s a good chance you won’t have a pleasant experience working with them, even if they are a good company. A molding company that’s too small might not be able to produce parts at a rate that suits your needs, whereas a molding company that targets clients bigger than your business might constantly push back your orders to handle bigger orders first.

There aren’t any shortcuts when choosing your injection molding company. You can’t simply choose the cheapest one and expect to get good parts, but choosing the most expensive one might also be unnecessary for your business right now.

At Quality Mold Shop, we work to design, manufacture and maintain injection molds that won’t let you down. We can help in keeping your molds in good condition once you choose an injection molding company. Ask your plastic injection molding company if you can choose your own injection mold provider and maintenance business if you’re interested in working with us to get a premium American made injection mold for your product creation.

Considerations for Choosing a Plastic Injection Molding Manufacturer

Considerations for Choosing a Plastic Injection Molding Manufacturer

The manufacturing procedure can be hard to comprehend and there are many variables to consider while picking a plastic injection molding manufacturer that best suits your industry. The best place to begin is by increasing your basic knowledge the plastic injection molding process. These are the key factors any item maker ought to consider while picking a plastic injection molder:

A Guide into Sourcing Automotive Plastics

A Guide into Sourcing Automotive Plastics

For a very long time, alloys have overwhelmed the general material substance of a car. Nonetheless, in the most recent decade, because of new regulations and fuel costs, there has been a noteworthy move to utilizing lighter weight materials, most commonly plastics or composites. This ascent in the car plastics is because of the business’ push to diminish the general mass of a vehicle, which is being driven by government controls and benchmarks (CAFE), and fuel costs.

An acquisition professional should always remember the following things before settling on a plastic injection molding crew. Not only do all of the following affect the overall pricing of the component, but equally as important, they affect the quality.

Automotive Plastic Fabrication Company Quality Mold Shop McMinnville TN

Key Considerations

Car plastics present one of a kind and valuable properties, for example, sturdiness, solidness, recycle capacity, heat stability, strength, protection, design adaptability, and light weight. The most widely recognized applications for plastics in autos are with the inside, outside and motor segments since they offer a lighter-weight choice, while expanding fuel effectiveness. Plastics likewise enhance the look or style, diminish noise and vibrations (NVH), keep in heat, and so on. Plastics offer a more reasonable way to deal with a more maintainable vehicle.


To legitimately source a car plastic part, a plastic injection professional must consider and completely comprehend the procedure that the segment and application warrant. Many variables determine which process is worthy. These incorporate size, weight, shape, application, surface area, heat, stream, and so forth. The most well known plastic procedures for car applications, incorporate the accompanying:

Injection Molding

Injection molding is the most mainstream process utilized for car plastic segments. With this procedure, the plastic (in pellet frame) is put into a container which moves the plastic pellets into a warmed infusion unit, where it is pushed through a long chamber. The material is liquidized amid this procedure and solidifies in the wake of drying. For high-volume plastic segment programs, this is the prescribed procedure.

Thermoforming/Vacuum Forming

Thermoforming utilizes a plastic sheet, which is shaped with a form by applying air or through mechanical help. The pneumatic force utilized can be about zero psi, or a few hundred psi. At 14 psi, which is roughly proportional to air weight, the weight is made by emptying the space between the shape and the sheet. This is known as vacuum framing.

Blow Molding

At the point when the segment should be empty or have liquid move through, the blow shaping procedure is most useful for the application. A liquid tube is made with blow molding utilizing packed air, which explodes the tube and powers it to comply with the chilled form.

Pressure Molding

Pressure molding is the most well-known process utilized with thermosetting materials and is typically not utilized for thermoplastics. With this procedure, the material is crushed into its shape with the assistance of weight and warmth. At the point when the mold is shut and warmed, the material experiences a synthetic change that makes it solidify into the coveted shape. The temperature, weight, and time allotment used amid this procedure relies upon the coveted results.


The procedure of extrusion is normally used to make items, for example, film, ceaseless sheeting, tubes, profile shapes, poles, coat wire, fibers, cored, and cables. Similarly as with injection molding, dry plastic material is put into a container and bolstered into a long warming chamber. Toward the end of the chamber, the material is moved out of a little opening, or a die, in the state of the completed item. As the plastic leaves the die, it is put on a transport line where it is permitted to cool. Blowers are now and then used to help in this procedure, or the item might be submerged in water to enable it to cool.


In light of the use of the part, its nearness to a heat source, area on the vehicle, and process, there are an assortment of elite plastics that are broadly utilized as a part of the car business, and a plastic injection molder must consider the attributes of every while sourcing a plastic segment. The most common materials for car plastics include: Polypropylene (PP), Polyurethane (PUR), Poly-Vinyl-Chloride (PVC), Acrylonitrile Butadiene Styrene (ABS), and Polyamide (PA, Nylon 6/6, Nylon 6).


The car plastics industry is situated to grow exponentially in the coming years. Understanding the above key aspects will guarantee trust in sourcing choices and offer organizations an upper hand in settling on future choices. Despite the fact that these thoughts are perhaps basic, there are numerous plastic injection professionals today settling on key choices without considering every single potential alternative with regards to plastic preparing and material determination. A true plastic injection molding expert will invest the energy it takes to completely comprehend plastic applications, volumes, procedures, and materials before sourcing to best plan their organizations can supply for your project.

Learn more about plastics and their qualties with this article! Looking for a plastic molder?

Local Plastic Injection Molding Factory

Local Plastic Injection Molding Factory

Getting your product made is important, but is where you get it made just as important? Of course! Getting your molds made and maintained is essential to the quality of your product. All over the TN area molds are brought to us here at Quality Mold Shop, a plastic injection molding factory located in McMinnville TN, to have their molds from China corrected. Just because a mold is priced up front cheaper doesn’t mean it will lower production costs.

Knowing where your mold is from as well as who worked on it are all big factors in the calculation of your bottom line. Why leave something so important to someone you’ve never met and lives across the globe and then it could get damaged in shipping! Quality Mold can provide your company with the high quality you deserve right here locally in McMinnville TN.

Not only does Quality Mold provide mold creation and maintenance, but we offer mold pickup and delivery! Another reason why having a local factory here in McMinnville is so vital to you as a company. Other services offered here are 3D scanning so you can reverse engineer a product if you so choose. If you need help with injection mold design we can help you there as well! From concept to production, we’re dedicated to our customers’ total satisfaction in each item delivered and each service provided. We have many trained and professional persons staffed on our floor just waiting to help you with your product.

When you work with Quality Mold Shop, you automatically get the benefits of our commitment to a clean work process, our high level material and production tolerance standards, and our dynamic systems approach to each process, from design to delivery. Bringing the best work we can to our local area and beyond is what we strive for. Get in contact with Quality Mold Shop today and find out how we can help you get moving on your product today!

Plastic Injection Molding: An Overview

Plastic Injection Molding: An Overview

Taking in the plastic injection molding procedure can be a bit mind boggling at first. Your organization has experienced weeks, months or perhaps years of innovative work to plan the freshest, most imaginative and effective item. You begin burrowing further and arranging how your item will be manufactured. You contact a nearby plastic injection molder and get pounded with questions that you are almost certain they are asking in an foreign language, or if nothing else it feels that way.

Abandon all that anxiety! Here at Quality Mold Shop we will enable you to build up the best items in a convenient way, productively, and be cost effective. This article will go over basics of plastic injection molding and enable you to get a more complete understanding of the process.


Knowing the procedure of injection molding is key to boosting the quality and manufacturability of a plastic product. At the point when this procedure is comprehended, outline and creation choices can be made all the more effectively for your product.


Resin pellets are poured through the container, venturing out to the barrel of the injection machine. With a blend of warmth and weight, the resin pellets are dissolved into liquid resin/plastic. The screw inside the barrel turns, delivering pressure, while pushing the liquid resin through the spout and into the mold depression. Once the mold is filled, the resin is cooled and ejector pins drive the formed plastic out and the procedure proceeds to the next round.

Clamping Process:

The mold clamp chamber controls the opening and shutting of Mold A (mold center), supplying the proper brace power to Mold B. The clamping power keeps the mold shut against weight amid the injection procedure. A 300 ton injection machine has a clamping power proportional to over 300 tons.

The measure of clamp pressure required is specifically correlated with every resin property and injection pressure needed to fill the mold void. Thicker resins have a low stream (slower flow) and require higher pressure to fill the mold. Thin resins require less pressure because of their high flow rates.

Infusion Process:

The mix of warmth and pressure liquefies the resin in the infusion barrel. Heating bands encompassing the barrel are intended to raise the temperature to the right melting point for every particular resin. Exact control amid this procedure is important when separating thermoplastic properties. On the off chance that the temperature is too high, the fill speed and shear stress can be influenced; affecting item quality, appearance and execution. Be that as it may, if the temperature is too low, the resin won’t liquefy.

Once the resin is dissolved, the screw inside the infusion barrel turns and pushes the liquid material through the spout, filling the form cavity. The following are different variables that should be resolved to guarantee creation achievement.

Fill Speed :

Fill speed should be set by the complexity, size and thickness of a product part. On the off chance that the fill speed is not figured exactly for the mold hole and properties of the resin being utilized, attributes below will be affected with uncontrolled results.

Shear Stress

Shear is the layers of polymer flow with respect to each layer. Shear stress is measured by the strain between the polymer’s atoms. In the event that the shear rate ascends past suggested areas, the item’s mechanical properties can be influenced. Utilizing a mold flow analysis is an extraordinary approach to reproduce the injection procedure and decide whether the fill speed is creating appropriate shear stress and shear rate.

Pressing and Sink Mark Displacement

Off base temperatures, fill speed and shrinkage can cause sink imprints and flaws. On the off chance that the liquid resin is not sufficiently pressed at the correct speed and temperature, sink imprints might be an outcome.

Cooling Process:

Streamlining production likewise implies diminishing process time. Timing is imperative for each procedure, including the cooling stage. A snappier cooling stage helps better time-to-market. On the opposite side, too speedy of a cooling stage can cause plastic flaws. Having satisfactory plans, gate sizes and fill speed to pack the mold evenly will help optimize the cooling phase.

Inventor to Entrepreneur: Plastic Injection Molding

Inventor to Entrepreneur: Plastic Injection Molding

Plastic is a wonderful, versatile material that can be used for producing nearly anything! The great thing about plastic and injection molding is that it makes mass-production for products more accessible. It’s no longer necessary for every item you buy in the store to be meticulously handcrafted.

What makes plastic injection molding even better, is that entrepreneurs can come up with an endless amount of new ideas for products that will improve our daily lives. Everything from technology to basic toys have some plastic-molded parts. And while we don’t think of the injection molding process often, it’s part of our daily lives. Even the device you’re using to browse the Internet, has some plastic molded parts!

But if you, like the average person on the street, have no idea where to begin in making your product idea a reality through injection molding, there are some simple steps to take.

Is Your Idea Worth It?

The first, most important question to ask yourself before having a product mass-produced, is whether or not the product will truly be profitable. Unfortunately there’s no way to know for sure, and as with any new business venture, there will always be some risk involved.

But that shouldn’t stop you from doing your research.

When thinking about whether or not the product you want to make will sell, you can ask yourself some basic questions like:

  • Does my idea solve a problem?
  • Does my idea improve upon an existing product?
  • Will there be a large enough market interested in buying my product?
  • Can I explain the benefits of my product simple and succinctly?
  • Can my product be manufactured at a realistic cost?

You’ll have to answer the first few questions for yourself by doing some market research. But the last one will require you to get quotes from product designers and plastic injection mold manufacturers.

Where to Start?

If you have a good idea that you believe will sell, your first challenge will be to get it on paper. Draw your design using some pen and paper. Don’t worry if you aren’t good at drawing, the important part is for your drawing to clearly show what you expect the finished product to be like.

You can also make some basic prototypes illustrating your idea using things like clay. Although it’s unlikely that a clay prototype would be functional, this will help designers understand what your product should look like in 3D. Apart from your clay prototype, you can also build a functional prototype using anything you can find around the house. This prototype will help you explain your idea more effectively.

Once you have proper designs and product examples, it’ can be a good time to venture into having it made in plastic. When you start out, getting your idea 3D printed can be an excellent way to make a realistic prototype of the end product.

3D printing is a wonderful technology for producing small amounts of plastic parts without the upfront investment of having a plastic injection mold made. For this reason, some products never go further than the 3D printing stage. An example of an innovative for 3D printing is in the manufacturing of prosthetics for amputees. Because every amputee has very specialized individual needs, 3D printing is now used to manufacture low-cost, custom-made prosthetics.

However, most products have to be mass-produced in order to be profitable, so for the purpose of your product design, you’re likely to use 3D printing only during the prototyping phase of design.

Once you’ve got a basic, 3D printed prototype of your final product, you’re ready to take the idea further. If there’s anywhere you were hoping to pitch your product idea, the prototype is sure to come in very handy!

Let’s Talk CAD Designs

This is where you hand your ideas over to the professionals. Computer-aided design – or CAD, for short – is a process where professional designers take your idea to the next level.

CAD designers know more about the injection molding process and the manufacturing of plastics products in general, so their designs will usually be made considering different aspect of the manufacturing process. This is essential for successful product design, seeing as a plastic injection mold will have to be designed and made specifically to produce parts for your product. The professional product designers will draw the final product design, not only thinking about the functionality of your product, but also how the molds producing parts for your product will function.

Some of the things a professional CAD designer will keep in mind while designing the final product include:

  • What material will be used to make each part of the final product?
  • How easily can each part of the final product be molded?
  • Where should the gates be placed on the mold to ensure the part has no molding defects?

Chances are, your designer will take an example of their design to a plastic injection mold manufacturer in order to decide how the molds should function. Plastic injection mold design and quality in the manufacturing of the mold itself will play a huge role in the quality of your final product.

If the gates feeding molten plastic into the mold aren’t placed correctly, for instance, the plastic might not fill the whole mold cavity and your parts could all end up being defective.

For this reason, your mold designer and manufacturer will be just as important in getting your product idea on the shelf as your designer.

At Quality Mold Shop, we pride ourselves in producing precision molds for any industry. We’ve successfully designed and maintained injection molds for the technology, medicine and the automotive industries. Talk to us about mold design, maintenance and manufacturing.

How to Mold Living Hinges

How to Mold Living Hinges

Living hinges are popular in low-cost containers, like the ones you see on Tic Tac or floss containers. But the use of living hinges can vary widely, and so the molding technique is also often used for producing medical instruments such as hemostats.

As you could expect, molding living hinges would be much more difficult without modern plastic injection molding technology. Especially seeing as the hinge itself relies on the plasticity of the material to last longer.

What Are Living Hinges?

Don’t know what a living hinge is? Well, actually it’s quite simple.

Like a normal hinge you’d expect to see somewhere like on a door, living hinges can be used to make things like swinging container lids. The only difference is that, unlike normal hinges, living hinges don’t have loops and pins to make up the hinge mechanism. A normal hinge typically merges two different parts together in this way. However, living hinges are more like a line where the plastic bends to allow movement. Basically, it’s a “seamless” hinge, because there aren’t two parts merged together by a hinge. Instead, the hinge in molded into a single-part product.

What this means is that living hinges have to be able to flex constantly without tearing. This is what makes plastic a good option for molding living hinges, seeing as metal would break as a result of metal fatigue if one were to make a living hinge from it. Materials such as wood, on the other hand, aren’t even bendable. By the time wood is thin enough to bend, it would simply splinter if it were to be flexed so much.

But just because plastic is a good material for molding living hinges, doesn’t mean that all living hinges molded out of plastic are perfect. On the contrary, products that have living hinges typically have a lifespan that lasts as long as the living hinge is functional. After a certain amount of time, even a plastic living hinge can grow weak and tear along the hinge line.

For the most part, living hinge failure isn’t such a big problem, seeing as living hinges aren’t usually molded into products that need to have a long lifespan. However, living hinge failure can become a problem if the hinge doesn’t last long enough to fulfill its purpose. This can be especially true in the case of something like a container that breaks before its contents is all used. So even though living hinges don’t have to last forever, they at least need to last long enough to fulfill their purpose.

To mold durable living hinges will take some careful consideration on your behalf.

How to Mold Durable Living Hinges

To mold a living hinge that lives up to your expectations, every step of part creation is important, from the actual design of the part to the material used to make it. Different plastics have different uses, and not all plastics are a good choice for molding plastic hinges into a part.

So, although molding a hinge into a part might seem like a challenging task, it’s much like molding anything else, as long as you plan everything properly and pay attention to detail during every step of part creation, you’ll get the results you were hoping for.

For the most part, experts tend to recommend homopolymer PP for molding living hinges. However, your molding will also have a big influence on the quality of your final part, so don’t neglect checking the ideal molding temperatures and processes, seeing as you’re likely to get better results molding hinges at lower temperatures.

Mold Design and Construction

When it comes to molding any plastic part, the design and construction of your mold is just as important as what polymers you use and the process itself. Unfortunately, plastic molding isn’t a simple process. There are many things that can go wrong along the way, and a bad mold could very well be one of them.

Things to consider in mold design and construction include where to place gates and understanding how your material will flow through the mold once it’s entered. This might seem like a small things, but the flow pattern of the molten plastic in your mold can have a potentially huge impact on the quality of the parts a mold can produce, and unfortunately some molds with faulty designs are simply incapable of producing parts that live up to their intended purpose.

Of all the steps in molding a part with living hinges, having your mold designed and made will usually be the most costly, and so it’s important that the mold delivers as you hoped it would from the start.

The first step in getting your mold made would be proper part design, of course, so don’t neglect proper part design and prototyping. There’s simply no sense in having a high quality mold made for a part that was poorly designed to start with.

However, once you have a good part, your mold’s ability to accurately produce the part becomes the next most vital step in molding a proper part. Because unlike with selecting your polymer, changing your mold and experimenting with it won’t be as simple.

To get a mold that you can rely on, be sure to contact us at Quality Mold Shop. We’ve produced a large number of molds for almost every industry, and our precision equipment allows us to manufacture high quality molds for creating even the most detailed parts.