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Accurate Estimate for Plastic Molded Parts

How To Get an Accurate Estimate for Plastic Molded Parts

Accurate Estimate for Plastic Molded Parts

Are you a developer, designer or inventor of products that requires blow molded or injection molded plastic parts? Do you think you are ready to bring your new idea to market? Are you looking for a price quote for blow molding or injection molding for your new product?

SPI is regularly contacted by developers, designers and inventors, who’s products are at varying stages of development. More sophisticated and experienced customers may have 3D CAD files or prototype molds built before calling us. Some customers may have 2D drawings or a homemade prototype mocked up. While, still others bring only sketches or concepts. We have examples of each maturing into successful product launches.

While the appearance of the product or the visible parts may be well thought out, the function, material and plastic molded part design requires a great deal of exploration. Below, we discuss some of the design questions we consider to deliver Quality Parts at a Fair Price.

We have specific questions that need answers before SPI can provide an accurate estimate on part pricing. We look at ways to help design for ease of manufacture at both the part design as well as the tool design. Producing a clear and thorough estimate for plastic molded parts design and development requires a great deal of communication and expertise.

Before you are ready to manufacture your idea, these questions are important to consider:

What is the end use of your product?

  • Will the part be exposed to chemicals?
    If a product is going to be exposed to bleach, or ammonia or other chemicals, there are specific resins that we will recommend to used that will ensure the integrity of the plastic part over time and use.
  • Will your product hold food or beverages for human consumption?
    There are specific guidelines required for food safe storage products. Because of the stringent guidelines, not all injection molding or blow molding companies offer food safe plastic solutions.
  • Will your part be exposed to extreme temperatures or other environmental conditions?
    These considerations will allow your molder to offer recommendations of resins and special additives that may be used to allow your part to function under extreme conditions.

Specific Design Elements will determine best processing technology for Plastic Molded Parts

  • What are the dimensions of your plastic molded parts?
    The size and annual demand of your part will dictate which plastic molding process is required. SPI can help you determine the best processing technology for your product. Typically, small, complex parts such as handles for tools or pens are ideal for injection molding. Hollow objects such as bottle and beverage containers are best suited for blow molding. Where does your product fit? We can help.
  • How complex is your part? Will your part need to be flexible?
    Is your part a simple rectangle with one notch that will connect with another part? Does your part have multiple levels, notches, clips or bellows? Does your part start large and get progressively smaller? Do any elements of your part need to move or be removable? Is a portion hard, while another component pliable such as a clip that must be squeezed into a hole to later expand? The complexity of the design will dictate the type of material, time needed for the mold development and tooling.

What materials are best for your plastic molded part design?

  • Which polymers or resins are best for your product?
    If you are not familiar with the many types of plastic materials on the market, a qualified plastic molder can help you make the best selection. Once a molding engineer knows the end use of your product, the size, quantity, and processing technology, they should be able to offer options for the best material selection for your plastic molded parts.

As you can discern from the many questions posed above, there are many variables that will determine the best solution to manufacture, assemble and deliver your product. The manufacturing company you choose should be a partner in the success of your product. Give SPI Blow Molding or SPI Industries a call, we look forward to partnering with you to help launch your new product. We will support your success by delivering Quality Parts, On Time at a Fair Price.