Injection molding cost can range anywhere from $100 to $100,000+ depending on the scope and intricacy of the project. A small and simple single-cavity plastic injection mold usually costs between $1,000 and $5,000. Very large or complex molds may cost as much as $80,000 or more. On average, a typical mold that produces a relatively simple part small enough to hold in your hand costs around $12,000.
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But at least to some degree, asking what plastic injection molding costs is a lot like asking, &#;How much is a car?&#; Will your mold be a Pinto or a Porsche? And don&#;t forget that the price of a mold is just the beginning. To determine overall plastic injection molding costs for any project, you have to consider raw material, operation, and repair costs later down the road, too.
The start-up costs for a large run can be expensive, but the price for the project becomes better and better as you continue to produce. If you&#;re looking at price per unit, plastic injection molding is one of the cheapest, most cost-efficient forms of manufacturing. With injection molding, the more units you create with your mold, the cheaper the price per unit becomes.
The determining factors in the cost of your mold are a combination of the part size, complexity, material, and anticipated quantities. For instance, if you wanted 1,000 washers per year, we would recommend a single cavity mold, meaning it makes one washer per machine cycle. In that case, the mold would probably be $1,000-2,000.
However, needing 100,000 Xbox controllers every month is a different story. For this requirement, we would recommend building a 12-cavity hardened &#;family&#; mold, which would make four Fronts, four Backs, and four Button Trees every cycle. Of course, this type of mold comes with a cost. You&#;d better have $60-$80,000 or more to invest!
These examples are extreme, but they illustrate the range of costs to anticipate. Your particular part will most likely fall somewhere in between that. At Rex Plastics, our molds average around $12,000.
In order to understand what the injection molding cost of your project may be, you need to understand the process and factors that will affect the price of your project.
There is a range of machines used for injection molding. The cheapest option is a small desktop injection molding machine perfect for in-house projects. A small desktop injection molding machine is the most cost-effective choice for producing low volumes of parts.
If your project requires large industrial molding machines that are operated by a service provider and large manufacturers, you&#;re looking at spending anywhere from $50,000 to $100,000+. Unlike the small desktop injection molding machine, these larger machines require professionals who can operate, maintain, and monitor the machine.
Material selection is another consideration in determining what plastic injection molds cost. Any plastic product made from fiberglass-filled material, for example, will wear down most common molds. Only a mold made from hardened tool steel can withstand injection molding with fiberglass-filled material.
For most projects, there are three main methods for making molds or tooling.
At
Rex Plastics
, we primarily focus on hardened tool steel for our CNC mold-making process, but there are a number of materials suitable for CNC machines. Various metals and plastics, foam, glass, and even wood can be used to create products using different machines. Less common materials often require specialized equipment, such as hot wire or plasma cutters. CNC machines are an ideal solution for many different production jobs. From simple to unique, one-off products that require a high degree of precision and detail, CNC machines are a great fit as the process allows for accuracy down to a fraction of a millimeter.
Materials used in injection molding are plastics, specifically thermoplastics. There are hundreds of thermoplastics, but the most common thermoplastics used in injection molding are:
The cost of the material you use for your project is usually decided by the design, material chosen, and the amount you need to complete the project. Here is a quick chart explaining more about each thermoplastic material, their features, common applications and price per pound.
Type of Thermoplastic Material Unique Features Common Applications Price per poundABS
durable, lightweight
electronics, keyboards, hardware, LEGO bricks, drainpipe systems, kitchen appliances
$1.30
polyethylene
flexible, impact-resistant, leech resistant, moisture resistant, recyclable
food packaging, milk jugs, toys
$1.20
polypropylene
leech resistant, flexible
Tupperware, kiddie pools, toys, utensils, car batteries
$0.90
polystyrene
warp, shrink and impact resistant
compact disc cases, packaging applications, household appliances
$1.00
nylon / (POM)
heat-resistant, durable
high-ware parts, quick-release buckles, gears, hand cranks
$2.20
polycarbonate
impact resistant, optical clarity, vulnerable to chemicals
automobile headlights, bulletproof glass, eyeglasses, greenhouses, DVDs, mobile phones
$2.30
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The last thing to consider when pricing out your injection molding cost is the cost of service or professional labor you will need. Professionals can help you set up the necessary equipment to create molds and your products. During the process, they&#;ll be able to replace defective parts and monitor the progress of the overall process.
As a full-service plastic injection molding company that manufactures molds from conception to completion, pricing for each job we fulfill can vary dramatically.
However, we know injection molding cost estimates are critical to any successful project.
That&#;s why we&#;ve compiled the following price guide to help you budget for your mold. The injection molding cost examples are categorized by type (Rapid Prototyping, Insert Tooling, High-Production Tooling), and degree of difficulty (Basic, Intermediate, Advanced).
If you have a target price established for your parts, tell your mold builder. They can design the mold accordingly and plan for the right number of cavities to achieve that price. The more cavities (or parts made per cycle), the less expensive the parts will be, also allowing for higher output.
While you don&#;t need to know every detail about the types of molds available, it&#;s always a good idea to come prepared. Supplying the basics to your mold builder will help them build the best tool for your project. We recommend that you find a mold maker who also has production capabilities. The production company won&#;t want to build an inadequate mold because they know they must use it.
If you&#;re thinking of outsourcing your mold-making overseas, consider all of the factors in bringing the mold to optimum production standards outlined in this American Mold Builders Association article. You might be surprised to learn the true cost of off-shoring!
Whatever your project requires, Rex Plastics can help you decide whether you need a Ferrari or a Fiat.
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When you have a need for a custom plastic container, think about using a blow mold design. Blow molding is a very flexible manufacturing process used to make hollow plastic containers at an affordable price.
There are actually 3 ways to develop a blow mold design:
1. Extrusion blow molding (dairy containers, shampoo bottles, hoses, pipes, etc.,)
2. Injection blow molding (small medical bottles, single serve bottles, etc.,)
3. Stretch blow molding (soft drink bottles, jars, etc.)
Each blow mold design is more appropriate for one type of container over another. Blow molding lends itself well to making custom containers, but which process to use is dependent on a number of things.
To give an example of using a blow mold design, we will use a fictitious product &#; a steak sauce that will be celebrating its 100th anniversary. To acknowledge the 100th anniversary, we want to come out with an anniversary edition of the steak sauce. The new blow mold design needs to look like the original steak sauce bottle, but we want to make it in plastic.
From a marketing standpoint, there are a number of reasons why it would be good to come out with the anniversary edition steak sauce:
Is that enough to justify the cost of creating a custom blow mold design? You need to answer that.
We want the &#;anniversary&#; blow mold design to look like the original steak sauce bottle:
Looking at the various blow mold design processes, we can see that injection molding is not used for this type of product, so we can rule that process out.
It appears that extrusion blow mold designs and stretch blow mold designs might both be viable choices for your custom bottle.
Which one will you choose?
You need to find a blow molding manufacturer that can develop a blow mold design for your custom bottle and that best fits your needs:
· Is there a manufacturer that you&#;ve worked with before that could develop a blow mold design for your custom bottle?
· Do you need a manufacturer that is local?
· Do you need a manufacturer that specializes in creating blow mold designs for your custom bottle?
· Can they produce the blow mold design for your bottle in the timeframe you have in mind?
· Finally, are they affordable?
You don&#;t need a special occasion to have a need for a custom container &#; your reason could be celebratory, or it could be a very ordinary situation. Whatever the reason, the process of developing a blow mold design and having a custom container produced will be the same. Using a blow mold design could be a very attractive option for you, both aesthetically and fiscally.
At Microdyne we are fully equipped to help you create the custom container you need &#; from design to completion. We offer both design engineering and tooling, and extrusion and stretch blow molding capabilities. We invite you to browse our site and read through our blog entries. We will be happy to answer any questions you might have.
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