For production runs of 1,000 units or more, injection molding can be used to manufacture plastic parts at a lower cost than other methods of manufacture. For example, American Sign Letters uses injection molding molds to create their plastic letters, which are available in a variety of colors. The cost of the mold will be the most significant investment. Other considerations include the amount of material required for each part as well as the amount of time required to manufacture each part.
When estimating the cost of Injection Molding Company molding Company, there are several factors to consider. Making a mold
Cost of the mold: Creating a mold can range from a few thousand dollars to tens of thousands of dollars depending on its complexity. The cost of a mold will increase proportionally to the size of the mold required and the complexity of the product design.
What kind of material is required for the creation of the mold? Typically, molds are made of aluminum or hardened steel, with steel being the more expensive of the two materials.
Another factor to consider is the cost of the mold, as well as the surface finish that you would like to see on your finished product when it is finished. The higher the level of polish required for a finish, the higher the cost of creating a mold will be.
An example of how much a mold to produce a part 8 inches by 8 inches by 1/8 inch would cost would be approximately $30,000.
The cost of molding material is determined by the grade of plastic that is required for production and the application of your product or part. You can reasonably expect your cost to be approximately $5 per pound (1/2kg) for a common, middle-grade plastic.
Machine and labor costs: Machine and labor costs are calculated based on the number of parts that can be produced per hour by your machine. With the exception of its size, the above-mentioned example takes approximately 80 seconds to create. The machine is capable of producing 45 units per hour in this case.
The hourly machine cost and labor wages are largely determined by the geographical location of the factory.
Putting everything together:If you want to make 20,000 units of a part that is 8′′ X 8′′ X 1/8′′ and made of a middle-grade plastic, the cost per unit would be about $2 for a production run of 20,000 units. That is based on the fact that the mold cost $30,000 and that machine and labor costs are $30 per hour.
injection molding molding Company Injection Molding Company Company has a number of advantages and disadvantages.
Positives: It is the most cost-effective manufacturing method for producing large quantities of identical plastic parts in a high-volume production environment.
There is a substantial variety of plastics available with varying physical properties to meet the needs of different applications.
A repeatable process produces high levels of productivity. A typical production cycle lasts approximately 60 seconds.
Negative aspects include:
The initial start-up costs are extremely high. Consequently, it is only appropriate for high-volume production runs.
Design changes made after a mold has been cast are extremely expensive.
The shortest possible delivery time is approximately one month, depending on the complexity of the design and the volume of production.
a set of general guidelines
Make a prototype using 3D printing or CNC machining to fine-tune your design before ordering an injection molding mold from a mold manufacturer.
The more straightforward the geometry of a part, the less expensive it will be to produce a mold for it. Make your part no more complicated than is absolutely necessary.
Maintaining constant wall thickness, rounding all corners, and designing draft angles for all verticals will yield the best results.
molding is a cost-effective method of producing large quantities of products (over 1,000 units). When the number of units to be produced is less than 1,000, 3D printing and CNC machining are more cost-effective. Sheet metal is also a cost-effective option for high production volumes of 1,000 units or more.