Process Monitoring is Crucial in Tight Tolerance HPM Plastic Injection

September 7, 2023  |  , ,

Plastic Injection Molding HPM (high-performance material) parts with tight tolerances demand that processes are repeatable within established limits.  Performance Plastics utilizes best practices to eliminate process inefficiencies and unplanned maintenance, when working with materials such as Torlon (PAI), PEEK, Ultem (PEI) and FEP/PFA.  Simple processes must take place every shift to ensure that process and production are on target.

  • Process Validation

Process validation procedures must be completed prior to establishing process monitoring.  A validated process must run at complete cycle efficiency, producing little to no scrap for no less than 8 hours.  Evaluations and considerations must be analyzed whether a process can be repeated from one run to the next.

  • Process Installation Qualification – Making Sure Everything Works
  • Operational Qualification – Test, Test, and Test Again
  • Performance Qualification – Testing the actual Part.
  • Process Monitoring

Many companies fail to understand that a similar press or mold does not guarantee the tight tolerance processes will be repeated, especially when working with HPMs.  Each press must have its own process monitoring record, and sister molds need to be approached as completely different molds.

Areas that must be constantly monitored:

  • Fill Time
  • Peak Pressure
  • Part Weight
  • Cycle

Each value must have control limits and must be within the window established for these limits to control.

  • Basic Molding Fundamentals

The key to the HPM process consistency is the care and inspection of molds before each job.

  • Molds are cleaned and inspected.
  • Nozzles are inspected for blowback.
  • Hot runner point temperatures are verified.
  • Water is verified at the beginning of each run.

Performance Plastics embraces best practices in order to provide our customers with the quality and repeatability required for HPM tight tolerance medical, aerospace, and industrial parts.

For more information on how Performance Plastics manages our best practices, please contact Rich Reed, Vice President of Sales and Marketing at [email protected], or visit our website and www.performanceplastics.com

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Expertise is critical for a Precision Injection Molding Project

July 20, 2023  |  , ,

Expertise plays a vital role in precision injection molding. Precision injection molding involves the production of high-quality, complex, and intricate plastic parts with tight tolerances. It requires specialized knowledge, skills, and experience to achieve consistent and accurate results.

Here are some reasons why expertise is critical in precision injection molding:

  1. Tooling Design: Expertise in precision injection molding includes a deep understanding of tooling design. This involves designing molds with precise cavities, gates, runners, and cooling systems to ensure optimal part quality and dimensional accuracy.
  2. Material Selection: Knowledge about different types of plastic materials and their properties is crucial. Experts can select the most suitable material based on the specific requirements of the part, such as strength, flexibility, heat resistance, or chemical resistance. This helps in achieving the desired functionality and durability.
  3. Process Optimization: Injection molding experts have in-depth knowledge of process parameters, such as temperature, pressure, and injection speed. They can optimize these parameters to ensure consistent part quality, minimize defects like warping or sink marks, and reduce cycle times.
  4. Troubleshooting: Even with careful planning, issues can arise during the injection molding process. Expertise allows for effective troubleshooting and problem-solving. Experienced professionals can identify and resolve issues like air traps, short shots, flash, or dimensional variations, ensuring that the final parts meet the required specifications.
  5. Quality Assurance: Precision injection molding demands stringent quality control. Experts can develop and implement robust inspection and testing protocols to verify part dimensions, surface finish, and other critical parameters. This helps in maintaining consistent quality and meeting customer expectations.
  6. Cost Optimization: Expertise in precision injection molding can help in optimizing costs. By fine-tuning the process, reducing scrap rates, and minimizing cycle times, experts can enhance efficiency and reduce overall production costs.

Precision injection molding requires a high level of expertise to achieve accurate and consistent results. Performance Plastics possesses the knowledge and experience of experts in areas such as tooling design, material selection, process optimization, troubleshooting, quality assurance, and cost optimization are crucial for producing high-quality plastic parts with tight tolerances.

For more information on how Performance Plastics can offer expertise on your next Precision Injection Molding project, please contact Rich Reed, Vice President of Sales & Marketing at [email protected] or visit our website at www.performanceplastics.com/capabilities.

 

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Performance Plastics – USP Class VI Medical Compliance

June 29, 2023  |  , ,

In order to ensure the safety of medical devices, USP Class VI testing is required.  Developed by the United States Pharmacopeia, the Class VI test is a specific test conducted on medical devices to assess their biocompatibility.  It is designed to evaluate the potential adverse biological effects of the materials used in a medical device when they come into contact with living tissues or bodily fluids. Performance Plastics is proud to announce we have passed the test – we now offer material and process expertise.

The USP Class VI test is particularly important for medical devices that directly or indirectly interact with the human body, such as implants, surgical instruments, catheters, and tubing. The test helps to ensure that these devices are safe and do not cause harmful reactions or toxicity when used in clinical settings.

Here are a few key reasons why the USP Class VI test is conducted on medical devices:

  1. Patient Safety: The primary objective of the USP Class VI test is to ensure patient safety. By assessing the biocompatibility of the materials used in medical devices, it helps identify any potential risks or adverse reactions that may occur when the device is used in the human body.
  2. Regulatory Compliance: Compliance with regulatory standards is a crucial aspect of the medical device industry. Many regulatory bodies, including the U.S. Food and Drug Administration (FDA), require medical device manufacturers to demonstrate the biocompatibility of their products. Conducting the USP Class VI test helps meet these regulatory requirements.
  3. Material Selection: The USP Class VI test aids in material selection for medical devices. It helps manufacturers evaluate different materials and determine which ones are the most suitable in terms of biocompatibility. This allows them to make informed decisions about the materials used in their devices, minimizing the risk of adverse reactions.
  4. Product Development and Improvement: The test is also valuable during the product development and improvement stages. By identifying any potential biocompatibility issues early on, manufacturers can modify or optimize their device design or materials to enhance safety and efficacy.
  5. Industry Standard: The USP guidelines are widely recognized and accepted within the medical device industry. Conducting the USP Class VI test demonstrates a commitment to quality and safety, providing confidence to healthcare professionals, regulatory bodies, and end-users.

It’s worth noting that the USP Class VI test is just one of several tests and evaluations conducted to assess the biocompatibility of medical devices. Other tests, such as cytotoxicity, sensitization, and irritation tests, may also be performed depending on the specific device and its intended use.

For more information on Class VI testing and how Performance Plastics can assist in certifying your medical device, please contact Rich Reed, Vice President of Sales & Marketing at [email protected], or visit our website at www.performanceplastics.com.

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Performance Plastics – Factors that Determine Injection Mold ROI

May 25, 2023  |  ,

Injection molds are one of the most significant investments a manufacturer can make.  The lifespan of the injection mold depends on several factors; the design and construction of the mold, the type of material being molded, the operating conditions, and the maintenance practices employed.  Generally, high-quality molds are built to be durable and last for a significant period.  Below are some factors that affect the longevity of injection molds:

  • Operating Conditions – The conditions in which your injection mold operates have a corresponding effect on the lifespan of your mold. Will the mold be used in dirty or harsh environmental conditions?  Or is it run in a clean, sanitary environment? Dirt can take a toll on your mold.
  • Time between production runs – In general, the less time between runs the shorter the lifespan of your mold will be. The result of less time between runs is that molds may be less likely to get full mold maintenance between each cycle.
  • Cycle times – Longer, slower cycle times can be less taxing on your molds, which in turn may help them last longer. The length of your cycle time is largely dependent on elements of your design, including wall thickness, as well as design complexity.
  • Injection mold material – The materials used to create your mold will also play a role in its longevity. Aluminum molds, for instance, won’t last as long as their steel counterparts. The materials being molded also play a role in longevity, as some materials will be harder on molds than others.

It’s important to mention that the lifespan of an injection mold is not solely determined by the number of cycles but also by the overall condition and functionality of the mold.  Factors such as wear, damage, and changes in the molding material or production requirements can necessitate repairs.

Performance Plastics are experts in precision injection molding.  We have developed proprietary tooling, unique metallurgy equipment, and processes that produce custom-molded plastics such as fluoropolymers, Ultem®, PEEK, and Torlon®.  We leverage our high-performance polymer expertise and technology to develop thermoplastic compounds and techniques to maximize your mold and provide the best ROI on your mold investment.

 

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Performance Plastics – Experts in Direct Gating Technology

June 30, 2021  |  , , ,

 

For decades, Performance Plastics has been delivering the highest quality custom plastic injection molding solutions in the industry for our customers. We take a highly specialized and consultative approach, working closely with our customers to develop the solutions needed to solve the most complicated issues.

Direct gating is a molding technique designed to drastically reduce the material waste associated with runner systems. This is critically important when working with sheer sensitive, expensive materials such as fluoropolymers (FEP, PFA, PVDF) and PEEK.

Direct gating is ideally suited for deep draw parts and/or small parts like medical components.  The technique saves resin and typically cuts cycle time by up to 50%.  In addition, it eliminates the need for downstream processing such as surface finishing or grinding.  The part quality achieved by direct gating is in many cases improved over parts manufactured with a cold runner.

We work with design engineers to create better products.  Direct gating is an advanced technique that increases value and provides advantages for new, innovative concepts.  Our hybrid direct gate technology eliminates the runner waste associated with conventional molding, significantly reducing material use and per part cost. Polymers are injected directly into the part mold eliminating the need for runners.

Performance Plastics excels at intricate injection molded components needing some combination of high temperature, low surface adhesion, chemical and organic resistance in a package with complex geometries and/or tight tolerances.

For more information on how Performance Plastics can solve your tight tolerance molding challenges, please contact Rich Reed, VP Sales & Marketing at 513.321.8404 or [email protected].

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Direct Gating Makes Complex Medical Components A Reality

December 2, 2020  |  ,

At Performance Plastics, our primary job is to facilitate designs that create better products. Our direct gating technology does just that by increasing the value of existing products and providing advantages for new, innovative concepts. Our hybrid direct gate technology eliminates the runner waste associated with conventional molding, significantly reducing material use and per part cost. Polymers are injected directly into the part mold eliminating the need for runners.

Direct gating is suited for deep draw parts such as pipettes and syringe barrels or for small parts like medical infusion components.  This saves both resin and typically cuts cycle time by up to 50%.  In addition, it eliminates the need for downstream processing of the cold runner, which in medical applications can not typically be used as regrind.  The part quality achieved by direct gating is in many cases improved over parts manufactured with a cold runner.

Part quality is always critical in the medical industry due to safety concerns.  With medical parts, sharp edges or pronounced gate vestiges can potentially tear latex gloves or even skin.  In the medical industry, even seemingly small improvements in quality can make a significant difference in everyday applications and safety.

Performance Plastics excels at helping customers create intricate injection molded components that can benefit from a combination of high temperature, low surface adhesion, chemical and organic resistance in a package with complex geometries and/or tight tolerances.

Performance Plastics has developed a number of industry leading technologies enabling us to injection mold intricate, thin walled components out of some of the most sheer sensitive materials such as fluoropolymers.  This is critically important when working with sheer sensitive, expensive materials such as fluoropolymers (FEP, PFA, PVDF) and PEEK.

Performance Plastics Ltd offers high-performance injection molding thermoplastic expertise featuring tight tolerances and thin walled part geometries.  The industries we serve include aerospace/defense, medical and industrial applications. For more information, please visit our website at www.performanceplastics.com or [email protected].

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