Service and Maintenance of Injection Molds
Injection mold maintenance is a critical step in extending mold life and ensuring quality plastic products. Regular mold service and maintenance can prevent extra downtime, waste of raw materials and reduce the overall cost of injection molding by preventing out-of-spec parts from being produced.
As your strategic partner, Attractive Plastics can help you reduce the risks and costs associated with plastic injection molding. We can help you with a unique, high-quality and affordable full maintenance of your tools. Proper maintenance speaks volumes about our strategy and quality plan.
  • ISO 9001: 2015, IATF 16949
  • 24/7 engineering support
  • Free mold service & maintenance
Detailed Mold Maintenance Plan
Attractive Plastics' mold maintenance plan is based on the original mold design and usually includes daily preventive maintenance, mold inspection, maintenance, parts replacement, etc.
Our detailed mold maintenance plans include:
  • Identify the components to be inspected and how often they should be inspected.
  • Replace seals and other moving wearing parts.
  • Maintenance of ejection components.
  • Maintenance of hydraulic and pneumatic circuits.
  • Inspect all aspects of the injection mold, including runners, cavities, plates, and gates.
  • Check the hot runner and cooling channels for potential problems, and clear the water in the cooling channels.
  • Properly clean and lubricate the system, add lubricant if necessary, and tighten or replace accessories such as pins or springs.
  • Use non-toxic solvents to clean all mold parts.
  • Add rust inhibitor to injection molds.
  • Provide a detailed list of cleaners and solvents that will not damage surfaces or cause corrosion.
  • Molds with special requirements must undergo special anti-corrosion treatment and detailed maintenance instructions.
  • Make sure the mold storage area is completely dry.
Our Efficiency, Performance, Longevity Mold
By designing each mold to an extremely high standard and precision at an early mold design stage, design changes after mold creation are greatly reduced. Fewer changes lead to shorter lead times and lower manufacturing costs, ultimately benefiting customers. Our rigorous close tolerance machining and necessary inspections ensure high-performance tooling while maximizing mold life. Our experts perform mold flow analysis to optimize mold design, helping to verify the accuracy of mold design to eliminate late trial and error, reduce costs and help you bring products to market faster. Here is our key asset value to guarantee high quality mold. Here are some tips to ensure high quality molds.
  • Balanced Runner Systems
  • Mold Inspection and Management
  • Suitable Ejector System
  • Correctly Draft Angle
  • Hydraulic and Pneumatic Core Pulls
  • Cold & Hot Runners, Pin Valve Gate
  • Tight Tolerances Machining
  • Even Cooling Channels
  • Precision Sinker EDM & Wire EDM
  • Scientific Venting System
  • Scientific Gate (type, sizing and location)
  • Automatic Mold Maintenance Schedule
  • Quality Surface SPI, VDI 3400, MT serie Textrue
  • Right Mold Core/Cavity Material (Hardness and Some Special Request)
  • Technical Side Action (Lifters, Slides, Unscrewing Action, Collapsible)
  • Mold Inserts, Core, Slides, Lifters Close Tolerance (Maintaining tolerances of +/- 25 microns)
Why Choose Us
for Mold Services & Maintenance?
Quality mold
Good molds are the basis for high-quality products, and mold maintenance is also an important task in production operations. We strictly implement the mold maintenance schedule to ensure mold quality.
Mold damage or wear is inevitable. We use high-precision machines or labor to perform various maintenance and repairs to ensure that every part we produce meets your strict tolerance and appearance requirements.
Engineering Support
Our knowledgeable and experienced engineers are able to handle the design, manufacturing and repair of all types of complex molds. They have the ability to provide complex and precision mold repair solutions.
We will save and repair any mold produced in our company free of charge, and provide relevant technical support and maintenance records.
Reviews from Our Customers
A customer’s words have a more substantial persuasion than a company’s claims. We have served hundreds of satisfied customers and here are some reviews they give us.
Through advanced moldflow simulations, they were able to optimize gate locations and reduce overall cycle times by 15% for our complex automotive plastic part. The design improvements help ensure on-time deliveries at reduced cost.
David Moon
Vice President
Their modular mold design approach streamlined manufacturing of our new disposable medical device and eased transfer to multiple production sites. Agile tooling solutions support our global supply needs.
Carl Harris
Pruchasing Manager
Development of specialized cooling channels and thermocouple placement eliminated temperature variations entirely in production of our electronics enclosure. Dimensional consistency is within tightest industry tolerances.
Tony Jones
Their engineers worked closely with our R&D team to evaluate the new high-temperature material PFA injection molding, successfully helping us solve critical parts on some equipment. Their molding capabilities on high-temperature plastics far exceed those of their peers.
Ben Holder
Their rapid prototyping services quickly iterate the evolving design of our consumer appliance hardware through CNC machining and additive techniques. Tight production of each successive prototype variant drives the product to market faster.
Anne Zaremba
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Service and Maintenance of Injection Molds FAQs

What should be recorded for injection tooling maintenance?

Comprehensive records should be maintained for each mold overhaul, including the date work was performed, technician names, repairs/replacements made, test shot records verifying dimensions are within spec, any design changes made to improve functionality/longevity, and notes on the overall condition of the mold. Documenting this information builds an ongoing history file for each tool, allowing trends in performance to be tracked over time. This data informs maintenance schedules and identifies any mold components that may require more frequent replacement. Keeping organized documentation streamlines future overhaul planning and helps maximiz in performance to be tracked over time. This data informs maintenance schedules and identifies any mold components that may require more frequent replacement. Keeping organized documentation streamlines future overhaul planning ande a mold’s usable lifespan.

What are considerations for mold repair welding?

When repairing the mold, welding materials consistent with the original mold steel grade should be used. In addition, the size/location of the defect also affects the specific repair welding process. During repair welding, the mold should also be heated to increase the welding strength.

How to prevent plastic mold thermal fatigue?

Here are some key measures to prevent injection mold fatigue include:

Optimizing the mold cooling system design: Reasonably arrange the cooling channels to ensure uniform temperature in all areas of the mold and avoid local overheating.

Using high-quality mold materials: Use mold steels with good thermal conductivity and heat resistance, such as P20, NAK80, S136, etc., to improve the mold’s resistance to thermal fatigue. These steels have better thermal stability and anti-fatigue performance.

Reasonable design: Avoid sharp corners and thick variations in mold design to reduce stress concentration.

Controlling injection molding process parameters: Reasonably adjust the injection temperature, pressure, holding pressure time, etc. to reduce the thermal cycling stress on the mold.

Surface treatment: Perform nitriding, chromium plating or other surface hardening treatments on the mold surface, or coat a wear-resistant layer to increase the surface hardness and wear resistance and reduce the risk of thermal fatigue.

Temperature control: Strictly control the mold temperature during the injection process to avoid frequent temperature changes.

Regular maintenance of molds: Clean the mold surface in time, check whether the cooling channels are unobstructed, replace worn parts, find and repair small cracks in time to prevent crack extension and extend the life of the mold.

Operational specifications: Follow correct operating procedures to avoid mold damage caused by excessive force or improper operation.

What techniques can restore worn cavities and slides to their original specifications?

Computer-controlled machining provides the precision required for refinishing critical surfaces within tight tolerances. Lapping/polishing finishes for minimal part deviations.

What systematic preventative processes optimize mold life?

Regular inspection and maintenance including cleaning, lubrication, component replacement before failure, and modifying processes causing excessive wear. Documenting issues aids continuous improvement.

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