What Are the Advantages of custom plastic molding？

1. Plastic Injection Molding Provides Complex Part Design

Injection molding can handle highly complex parts, provides uniformity, and offers the ability to make millions of virtually identical parts. The effectiveness of high-volume injection molding and maximization of precision and quality of parts means taking key design elements into account. 

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The part design must be created to maximize the efficiency inherent in high-volume molding. With the ideal design, parts can be made with quality without sacrificing complexity. 

2. Plastic Injection Molding Provides High Efficiency and Fast Production

There are a few good reasons that this is the most common and most efficient form of molding. First, the injection molding process is rapid compared to other methods, and the high production output rate makes it even more effective.

The speed is subject to the complexity and size of the mold, but only about 15-120 seconds pass between each molding cycle. With the short period between cycles, more injection molded parts can be produced in a given production time.

3. Plastic Injection Molding Provides Enhanced Strength

The strength and durability of plastics have significantly increased over the years. Modern lightweight thermoplastics can endure even the harshest environments on par with metal parts and, in some cases, may surpass metal. 

In addition, there are more than 25,000 engineered materials that can be used for complex injection-molded applications. High-performance plastic blends and hybrids can also be created to meet particular part requirements and characteristics, such as high tensile strength.

4. Plastic Injection Molding Provides Flexibility in Color and Material

The plastic injection molding process provides flexibility. This flexibility can be in such things as the properties of the plastic being used or in the ability for OEMs to make custom color choices to meet specific project requirements. The benefit of plastic injection molding is the freedom in design choices that it affords to OEMs, especially when compared to metal. Many materials can be used. 

The molding process can create clear parts or various colors by aligning plastics, additives, and biocompatibility to achieve the wanted coloration. However, when multiple colors are often needed in one product, this can be accomplished using overmolding.

5. Plastic Injection Molding Can Reduce Waste

The plastic injection molding process produces very little post-production scrap relative to traditional manufacturing processes. Any waste plastic typically comes from the sprue and runners. Any unused or waste plastic, however, can be reground and recycled for future use.

6. Plastic Injection Molding Has Low Labor Costs

Labor costs for injection molding operations are relatively low compared to other types of molding processes. The capacity to produce the parts at a very high level with a high output rate helps reduce manufacturing costs through its efficiency and effectiveness. 

The molding equipment usually flows with a self-gating, automated process tool to keep operations streamlined and mass production ongoing with minimal supervision.

7. Plastic Injection Molding Provides Multiple Finishes

Most injection-molded parts have a smooth surface finish close to the desired final look. However, a smooth appearance isn’t suitable for every application. Depending on the physical and chemical properties of the plastic material used, the plastic injection molding manufacturing process creates surface finishes that don’t require secondary operations. The process provides finish flexibility, from matte finishes and unique textures to engraving.

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8. Plastic Injection Molding Creates Lightweight Products

Although they are most widespread in the automotive industry, OEMs use lightweight plastic injection molded products in many industries. Using plastic parts helps reduce weight compared to the use of metal parts. Today, high-strength, lightweight thermoplastics can replace metal components with virtually no difference in strength or durability, only in weight.

9. Plastic Injection Molding Has the Ability to Use Multiple Types of Plastic

Complex part designs often require components made of different materials. While this may seem simple, safely combining plastics can be tremendously complicated. By guaranteeing compatibility under all circumstances, plastics expertise from the molder’s project engineers mitigates defects, injury risks, and warranty claims.

10. Plastic Injection Molding Provides Consistency

Producing high-output yet complex plastic parts requires a consistent, repeatable process to achieve designs with tight tolerances. The injection molding production process helps ensure consistent quality by continually using the same mold for each part, backed by an injection molder’s continuous improvement practices that incorporate current leading-edge technologies.

11. Plastic Injection Molding Can Create Precision Products

Modern high-speed injection mold equipment that is appropriately maintained allows for the mass production of precision molded plastic parts. For the production of plastic components such as connectors and gears that require high precision production, this molding process is the best choice and offers tolerances as tight as +/-0.”.

12. Plastic Injection Molding Provides a Shortened Product Development Timeline

Different skill sets of injection mold engineers can help OEMs achieve a shorter product development timeline. Doing so ensures faster production cycles and getting defect-free parts to market faster — a decided competitive advantage for manufacturers.

This article summarized 12 key advantages of the plastic injection molding process.

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Do You Know About These Advantages And Benefits Of Custom Injection Molding?

As a manufacturing process, custom injection molding offers a number of advantages over other methods of production — including other types of molding. There’s a reason the global plastics market is expected to soar to $654.38 billion in value in the next few years. A major part of that is the extent to which plastic molding can serve a broad range of applications and uses in a huge cross-section of industries.

Of course, no single manufacturing process is perfect for all applications, but here are some reasons that custom injection molding should be on your radar:

1. Broad design flexibility. Custom injection molding affords the ability to design highly complex pieces according to the needs of the customer. While there are a number of best practices for  injection molding that help to ensure efficient production and suitable part quality and reliability, the possibilities within these design best practices are quite broad. Even when adhering toconventions such as rounded corners, tapered walls and gradual changes in wall thickness, injection molding designers and toolmakers are able to meet even the most complicated requirements.
2. Easily customizable. Many — in fact, most — injection molding resins are highly suitable for having colorants mixed in with them in order to produce surface coloring different from the natural (and often unattractive) color of the plastic. Most shops can recreate any Pantone color for an injection molding project, making the process especially suitable for applications where aesthetics are important — e.g., consumer products.
3. Control over quantities. A good custom injection molding supplier will allow you to work in any quantity that’s suitable for your requirements — even low, medium or prototype runs. Injection molding is a cost-effective process, but it quickly loses value if you’re forced into minimum orders or machine times — not to mention the excess inventory that you’ll be forced to carry. The reality is that options, such as 3D printed molds, exist to make short-run injection molding a viable and easily accessible service.
4. Widely variable tooling costs. Often, the cost of the mold or tool is cited as a barrier to entry for many customers who may wish to have a part injection molded, but don’t want to (or aren’t able to) meet the high cost of production for high-quality tool steel molds. There are a number of other options available for tooling — including, as mentioned above, 3D printed molds, which can offer the quality needed for prototyping or low-quantity production runs. In addition, other, “softer” metals such as aluminum molds can be very effective for short-to-medium productions runs — reliably producing quality parts in quantities up to the thousands (or more). Be sure to work with a supplier that’s willing to discuss your needs, and help you meet them.
5. Tight tolerances. Injection molding is a highly precise process, with little variance in part dimensions and tolerances, and relatively easy ways to account for the variance that does exist. A major factor in injection molding is shrinkage of the heated plastic resin as it cools, which can, in some cases, lead to defective or rejected parts. Accounting for shrink doesn’t have to be a guessing game, however: Proper injection, packing and cooling times, along with proactive part design and knowledge of the physical properties of your material, can help to ensure that your parts meet the required specs.
6. Efficient material use. Unlike “subtractive” processes such as CNC machining, injectionmolding is a process that results in little waste. Often, only as  much material as is required for acycle or production run is used (since it’s injected directly into the molds and cavities), and any waste that does occur can easily be recycled and re-incorporated into your raw material stock.
7. Easy reclamation and recycling. Continuing on the above theme, custom injection molding offers advantages and benefits over other processes because any material that does end up as waste — for instance, defective or rejected parts — can easily be reclaimed and recycled, and thus re-used for a future production run. Reclaiming “waste” injection molding resin is often as simple as heating the defective part or excess material back into a molten liquid form, which can then be used again.
8. Combinations of pieces and materials. Advanced processes such as co-molding and overmolding make injection molding a simple way to add even more customization to your part or product. In a nutshell, utilizing a process such as overmolding means that your injection molded part doesn’t need to be limited to materials suitable for injection molding. For instance, resin can be overmolded around a metal core or piece for added strength, a more interesting or attractive appearance, or more complex functionality.
9. Fast turnaround times. Much like concerns about the cost of tool steel molds, you may hear that injection molding is inefficient because the mold can take weeks or months to build. For shorter runs or other scenarios where tooling from a different material is suitable, however, that mold creation time can be much shorter — just a matter of days for 3D printed tools, in fact. Couple that with the fact that injection molding cycle times are quick compared to other processes, and it all adds up to turnaround times faster than just about any other similar process available.
10. Automation. While knowledgeable, experienced personnel will always be a critical part of a successful injection molding process, the nature of injection molding means that it’s highly suitable for automated processes such as part ejection and removal, or changing of tooling. Increased automation makes for a more efficient process.
11. Little to no finishing needed. For many applications, the natural finish of a plastic resin is suitable for the finished product. In fact, it’s often the reason why a customer might choose injection molding as a process (and its suitable resins as a material). If texturing or another typeofsurface finish is desired, it can often be included as part of the design of the mold, rather than applied via a secondary process. The ease with which coloring and other design elements canbe added, in-process, add to the time savings of a reduced (or non-existent) finishing stage.

Among the many types of plastic manufacturing and molding processes available, custom injection molding stands apart as one of the most cost-effective, versatile, efficient methods to date.

Contact us to discuss your requirements of precision injection molding. Our experienced sales team can help you identify the options that best suit your needs.