Injection Mold Design, Your Customized Parts!

Will the injection molding cost be expensive? What factors will affect the price?

This article will introduce the factors that affect injection molding price, how to control the costs, and the questions that you should ask when communicating with the manufacturer, assisting you to get the price that both party is satisfied with!

What does the Injection Molding Cost includes?

What does the Injection Molding Cost includes?

If you are working with an injection molding manufacturer for the first time, it is recommended to understand the 8 key factors that will affect the injection molding costs.

This will give you a clearer understanding of the resources and technologies the manufacturer invests in during the injection molding process and allow you to raise questions about related concerns to prevent any unreasonable situations.

Equipment


Injection molding machines range from small tabletop to large industrial machines, where the former is suitable for small scale production with lower costs, and the latter typically requires an investment of US$50,000 to US$200,000, ideal for large scale production.

There are 3 types of injection molding machines:

Additionally, auxiliary equipment such as cooler, material dryers, and automation tools, as well as quality control and inspection devices like 3D scanners and coordinate measuring machines (CMM), even though they may increase the upfront costs, but it ensures high quality of the final product, preventing larger losses in the future.

Mold Manufacturing


A simple and small molds can range from US$1,000 to US$5,000, but as the size and complexity increase, the cost can rise to US$80,000 or even higher.

There are 3 primary mold manufacturing methods:

If undercuts or additional decorative features are required, there is a chance for the manufacturing complexity to increase, which potentially lead to needing more mold cavities and higher overall costs.

Besides the manufacturing techniques, the materials used for the mold can also affect the final costs, for example, even though steel molds has more expensive upfront costs, but due to its durability, it can reduce the long term operational cost for large scale production.

In contrast, aluminum molds are more economical, but have a shorter lifespan, suitable for short term production.

Further reading : Injection Mold Design, Your Customized Parts!

Injection Molding Parts


Some cheaper injection molding materials like polypropylene (PP) and polyethylene (PE) are lower in price, but their durability and performance might be more limited.

In contrast, a higher cost materials such as polycarbonate (PC) and polyethylene terephthalate (PET), even though are more expensive per kilogram, but they offer excellent strength, heat resistance, and impact performance.

Using low cost materials may reduce initial investment but might need to compromise with their quality or durability.

On the other hand, higher priced materials, even though it increases costs, but they provide longer lifespan and stable quality.

This article outlines 10 common injection molding materials to help better understand their prices and typical applications:

Materials

Price Per Kilogram (US$)

Common Application

PLA

2.2-4.4

Biodegradable packaging, disposable tableware

PE

2.2-5.5

Tubes, household items, containers

PP

2.5-6.6

Automotive parts, home appliances, medical devices

ABS

2.5-7.4

Electronics, automotive parts, consumer goods

POM

2.5-7.4

Precision gears, bearings, zippers

PVC

3.0-5.5

Pipes, medical devices, wire insulation

PET

3.7-6.6

Bottles, food packaging, textile fibers

PC

4.0-9.9

Medical devices, electronic components, safety equipment

PA

4.4-8.8

Gears, bearings, automotive parts

TPU

5.5-11.0

Footwear, automotive interiors, medical devices

However, the prices listed above are for reference only, as they can fluctuate due to factors like fire resistance level (example, V0 rating), oil prices, transportation costs, and lead content. It is recommended to consult suppliers directly to obtain accurate material quotes!

Labor


Even though modern equipment relies heavily on automation, but human involvement is still very much needed in the setup, operation, maintenance, and monitoring processes.

Machine operations are typically handled by automated systems such as CNC, EDM, and 3D printing, which can produce molds according to CAD specifications.

Injection molding machines can also automatically handle material injection, cooling, and parts ejection. However, manual labor is still required for tasks such as setup, supervision, and repairs, all of which are count as labor costs.

Specifically, the setup costs also cover the preparations needed before production begins, which requires technical expertise. Especially when the production process is complex, the setup time and costs will significantly increase.

Maintenance and repair costs are associated with the daily maintenance of equipment to ensure smooth operation and prevent production halts caused by malfunctions.

Material handling and process supervision are also part of labor costs, involving the management of raw materials and the monitoring of the entire production process.

Additives


Additives can provide different functionalities based on specific product requirements, for example, adding UV stabilizers to improve the material’s stability at outdoor.

Adding colorants to enhance the plastic’s appearance, making it more visually appealing; adding flame retardants to increase the fire resistance of the product, meeting higher safety standards.

Production Volume/Scale


Low scale production, typically involves producing a few hundred to a few thousand parts, with the mold costs lower, but labor costs are higher, leading to a higher per-part cost.

Middle scale production, uses more durable aluminum or steel molds. Although mold costs increase, but the unit costs will decrease as production volume rises.

Large scale production uses steel molds, it has a high initial investment. But due to their large production volume, the lowest per-piece costs, as the production volume increases, the per-piece costs will continue to lower, which enhance economic efficiency.

Production Time


The duration of machine operation, mold preparation time, and the speed of cooling and parts ejection, will all affect the production time of each part.

Shortening the production cycle can improve efficiency and reduce unit costs, but overly short cycles may result in quality issues, which increase the rate of defective products and rework costs.

Manufacturing Costs


In addition to the basic costs mentioned earlier, there are other factors to be considered, such as shipping fees, indirect expenses, taxes, and other shared costs, that will be taken into consideration when giving quotes for injection molding.

How to achieve Low Cost Injection Molding?

How to achieve Low Cost Injection Molding?

There are many factors that will affect the injection molding cost stated earlier, if you want to effectively reduce these costs, here are the 9 methods that you should not miss out, which may help you achieve an ideal price.

Supplier Relationships

Building a strong partnership with material and tooling suppliers often results in more competitive prices and flexible supply terms.

This trusted relationship not only ensures a stable supply chain, but also helps negotiate favorable conditions, such as bulk discounts or long term contract benefits.

Suppliers may also offer technical support and the latest market information, which can also help to improve production efficiency and cost reduction, so investing time and effort into maintaining good relationships with suppliers can provide greater flexibility and advantages in cost management.

Simplify Design

The main target for DfM analysis is to optimize product designs, reduce the production costs and time. It allows the design teams to identify and eliminate complexities that could increase costs early on, which can improve the manufacturing efficiency.

Simplifying the geometrical parts, minimize the unnecessary features to prevent too much detail, and focusing on core functions of the product, will not only increase the efficiency of manufacturing process, but also reduces the need for expensive tools.

Even though additional features may increase a product’s appeal, but it can also significantly raise the costs, so it’s best to keep them within necessary limits.

Suitable Materials

Affordable materials can also offer similar performance to higher priced options, for example, PP is an economical and easy to process material that often requires minimal post-processing after molding.

For products requiring higher durability or strength, can also consider using PA or PC. Even though these materials are more expensive, but they can withstand higher temperatures and degrade less over time, reducing maintenance costs in the future.

Evaluating Parts Size

Larger parts usually require more material, which not only increases raw material costs, but can also add usage burden to molds and machines, raising the operational costs.

So, under the condition of product functionalities are ensured, reducing parts size where possible can effectively reduce material waste and lower overall production costs.

Additionally, smaller parts can also shorten the molding cycle time, since they cool down faster (shorter production cycle), thereby increasing production efficiency.

Thus, businesses can produce more parts in the same amount of time, enhancing economic benefits.

Universal Molds

Universal molds allow for the production of multiple similar parts, avoiding the high costs of creating custom molds for each new product, which will decrease the costs of mold.

This flexibility enables businesses to quickly do production adjustments, shortens production cycles, and increases material efficiency, further reducing waste.

Further reading :Why do we need custom injection molding?

Fewer Cavities

Fewer number of cavities means fewer parts produced per production run, which can lower the cost of mold manufacturing and maintenance.

Even though the cost per production run might increase, but the overall investment and risk are reduced. Especially in small scale production, this approach helps simplify the production process, shortening lead times and improving production flexibility.

Self-Fitting Parts

Through designing self-fitting parts that are compatible with other components in various products or series, can reduce the need for specialized parts, which lowers material and manufacturing costs while improving assembly efficiency, simplifying the production process, and further reducing labor and time costs.

Insert Molding

Insert molding allows for metal or other materials to be embedded directly into plastic parts, to reduce gaps and joints between parts.

This eliminates the need for post-assembly, which can reduce the assembly time and labor costs, while increase the overall production efficiency.

It also improves the overall structural strength and durability of the product, lowering potential failure rates and maintenance costs.

Further reading : What are the common types of plastic fasteners?

Quick Mold Changing System

Traditional mold changing process are usually time consuming and involve multiple steps, which can cause production delays and increased costs.

In contrast, quick mold changing systems simplify and automate these steps, allowing molds to be changed in just minutes.

This significantly improves production efficiency, reduces defects due to mold changes, and enhances the reliability of the final product.

Further reading :How to choose Injection Mold Tooling?

How to ask for Injection Molding Price towards manufacturer?

Although the prices will vary depending on the complexity and requirements of a project, but by asking the following questions can help you get a more accurate quote and assess the professionalism of the manufacturer.

Then after inquiring with multiple vendors, you can find a partner who is both skilled and within your budget.

  • What range of services do you offer? Does it include design support, prototyping, or post-processing?
  • How does your pricing change with different order quantities?
  • What is your typical production cycle time in the injection molding process?
  • What is your delivery time, and if delays happen, how do you handle it?
  • Do you offer samples for verification before large scale production?
  • What is your process for quality control, and how do you ensure consistency of product and final product quality passing rates?
  • Do you have any suggestions in the design improvements to reduce costs and increase efficiency?
  • Are there any hidden costs, such as shipping fees or taxes?
  • Do you use optimized production processes to minimize energy consumption and waste?
  • Do you offer options for recycled plastics or low carbon materials?

Further reading : How to find Plastic Injection Plant?

Provides a reasonable Injection Molding Price|Hsin Hung Yih Plastic

If you find asking each question above is too time consuming or are concerned about encountering manufacturers with low professionalism, it is recommended to first consider inquiring with Hung Yih Technology or Hsin Hung Yih Plastic.

They offer a wide range of services, including plastic injection molding, mold manufacturing, product development support, mechanical design, spray painting and electroplating, as well as product assembly.

They have received high praise from both domestic and international clients, successfully establishing many long term partnerships.

Additionally, they place a strong emphasis on environmental protection and carbon recycling, striving to contribute towards environmental protection.

What will increase the Injection Molding Service Cost?

If you are satisfied with the manufacturer’s injection molding quoted price, you can also consider some additional services.

Although they will increase the injection molding cost, but they can also enhance product quality and market competitiveness, making them worth to be considered based on your needs.

Professional Certifications

During parts inspections, various defects may arise, from surface issues to structural failures.

According to industry standards, some defects may be acceptable, but if there are parts that do not meet the requirements, the supplier’s quality assurance team will investigate until the root cause of the issue, usually at no extra cost for first time orders.

Some manufacturers will even offer professional certification services, which will require additional costs, as it involves detailed inspections by legally qualified engineers.

This is especially critical in industries where safety is crucial, such as automotive. Certification ensures that the product meets strict standards, reduces potential risks, and provides extra security for customers.

Parts Packaging

Large manufacturers often can use automated packaging, which not only reduces error rates but also minimizes the risk of damage.

If the supplier offers ready-to-use or nearly ready-to-use products, the packaging chosen may be directly presented to the customer.

While some suppliers also provide personalized packaging services to meet specific brand needs and market positioning.

Secondary Services

The cost of secondary services varies, but if choosing the same supplier to handle both injection molding and these additional services often will get discounts and savings on transportation costs.

These services include other manufacturing processes (such as machining and drilling), assembly services (such as bonding and ultrasonic welding), and decoration or marking (such as pad printing logos).

Certain components might require these secondary services to achieve better functionality or appearance, while simpler parts can be directly packaged.

How to estimate the Plastic Injection Molding Cost?|FAQ

Just contact Hsin Hung Yih Plastic for Injection Molding Cost Estimate

If you want to effectively control your injection molding costs, while receiving a high quality services, Hung Yih Technology or Hsin Hung Yih Plastic is undoubtedly your ideal choice!

They will always provide reasonable design solutions to achieve optimal economic benefits, regardless of the complexity of your parts requirements to help you effectively manage costs and maintain price competitiveness.

Furthermore, they are dedicated to sustainable practices in the manufacturing process, actively contributing to protecting the environment.

Leave a Reply

Your email address will not be published. Required fields are marked *

Use Social Account for Quick Login