Product Design · FEA · Mold Flow · Material Selection · Process Optimization
From Concept to Production-Ready Plastic Parts
Selecting the right material, designing for moldability, and optimizing for cost — before the molds are cut. Our combined 100+ years of polymer expertise eliminates the most common road blocks between a brilliant concept and a profitable product.
Years in Plastics Industry
Patents Awarded
States Served
Cases of Litigation Experience
Why Specialized Plastic Consulting Matters
Most design firms are generalists. Here's why the science of plastics demands specialists.
Litigation-Informed Design
Understanding why plastic parts fail is key to designing, developing, and manufacturing reliable products. Our failure analysis background gives us an advantage in preventing the exact failure modes we've seen in courtrooms.
Polymer Science, Not Just Form
Our plastic experts understand the chemistry and engineering of plastics at the molecular level. We don't just design shapes — we engineer materials, crystallinity, and additive packages for real-world performance.
Decades of Manufacturing Experience
Our team has decades of hands-on experience in the Plastics Industry. We've successfully helped many clients bring their ideas to market rapidly and cost-effectively.
Early Retention Saves Millions
Experienced plastic experts have seen it all and know the pitfalls. Early retention of a highly experienced plastic engineer speeds up the development process and reduces cost — we helped one client save millions through optimized die design alone.
Engineering & Design Services
Five core capabilities — from simulation to production-floor optimization.
- FEA & Simulation
- Material Selection
- Mold Flow Analysis
- Reverse Engineering
- Process Consulting
Finite Element Analysis & Dynamic Simulation
When designing parts, directional changes must be carefully radiused to spread stresses evenly. Our mold fill & pack analysis optimizes gate location and sizing. Our experienced experts can spot potential design flaws that computer models occasionally get wrong. Our dynamic FEA equipment, powered by high-speed supercomputers, predicts fatigue performance and service life.
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Static and dynamic FEA stress analysis
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Fatigue life prediction via supercomputer simulation
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Mold fill & pack analysis with gate optimization
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Identification of stress concentrations at radii and transitions
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Cyclic fatigue testing correlation with simulation results
Material Selection & Chemical Compatibility
The most common cause of plastic product failure is Environmental Stress Cracking (ESC). Material datasheets list strength, thermal, and flow properties but often lack chemical resistance details. We routinely conduct ASTM D543 'Resistance of a Plastic to a Chemical' tests to confirm products won't fail from chemical exposure. There are literally thousands of materials available — choosing the right one requires polymer science expertise.
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ASTM D543 chemical resistance testing
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ESC risk assessment for amorphous plastics
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Carbon fiber & glass fiber reinforcement optimization
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Cost-performance material trade-off analysis
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Regulatory-compliant material selection (FDA, UL, ASTM)
Mold Flow Analysis & Mold Design
An example: a plastic toilet flush valve molded from glass-fiber reinforced polypropylene failed in service. SEM images revealed glass fibers oriented parallel to the fracture — weakening rather than reinforcing the material. Our expert predicted improper gate location caused the fiber orientation issue. Mold flow analysis confirmed this: moving the gate would have allowed fibers to orient randomly, strengthening the part.
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Gate location and sizing optimization
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Glass fiber orientation prediction and correction
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Weld line and knit line identification
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Fill pattern and pack pressure optimization
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Certified Autodesk Moldflow & Solidworks analysis
Reverse Engineering & Deformulation
Reverse engineering of a plastic product goes beyond 3D scanning. It includes deformulation — identifying the plastic and all additives in the material — and CT scanning to generate a 3D computer model of the part design. This molecular-level analysis reveals exactly what a competitor is using and how their part is constructed.
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CT scanning for 3D part geometry capture
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Plastic deformulation (base resin + additives identification)
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FTIR & GC-MS chemical fingerprinting
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Competitor material and design benchmarking
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Intellectual property investigation support
Manufacturing Process Consulting & Scientific Molding
Molding a part involves optimization of the molding process through 'Scientific Molding.' We are experts in implementing this process to improve part quality. Production processes are often not optimized and can easily be adjusted to increase production rate without affecting part performance — reducing cost through both higher throughput and appropriate material selection.
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Scientific Molding implementation and training
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Process parameter optimization for quality and speed
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Residual stress measurement and reduction
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Cost reduction through material and cycle time optimization
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Quality control system development for shop floor testing
Failure Modes That Require Better Design
Learning from how plastics fail to design products that don't.
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Environmental Stress Cracking (ESC)
ESC involves two factors: an incompatible chemical and stress. Stressors include internal pressure, residual stresses from manufacturing, bent components, tight clamps, and stress concentrators from poor part design. ESC is the most common cause of plastic product failure — and the most preventable when the right material is selected for the chemical environment.
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Chemical Incompatibility
Once ESC failure due to chemical exposure is determined, the next step is identifying the chemical and its source. FTIR and GC-MS are the methods commonly used. Amorphous plastics (polycarbonate, ABS, polystyrene) are especially vulnerable to hydrocarbon chemicals — while crystalline plastics like polypropylene resist chemicals and heat.
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Material Selection Errors
There is a tendency to always use plastic and mold parts in China or third-world countries to lower cost. Sometimes a material other than plastic — and manufacturing in the US — is a safer choice. Making products that are higher quality and very reliable is the best way for a company to establish a great reputation.
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Forensic Triage Questions
When a product fails: Is this a one-off failure or systemic? Do you mold the part yourself or subcontract? If subcontracted, have other molders produced parts that didn't fail? Do you have a 'good' part in service that we can analyze alongside the failed part for comparison? These questions determine whether it's a material, design, or processing issue.
Advanced Capabilities
High-end tools and proprietary methods that set us apart from general design firms.
Quality Control System Development
Residual stress in plastic parts is often a key factor causing failure. The fabrication process should be carefully optimized to minimize residual stresses. We develop simple, effective tests for accepting or rejecting parts — like oven-based dimensional change measurements — to detect residual stress before parts leave the factory.
Cost Reduction Consulting
Cost is directly related to resin cost and production rate. Some products are over-engineered with expensive plastics when a lower-cost alternative works equally well.
Dynamic FEA & Supercomputing
Our dynamic computer simulation expert uses high-speed supercomputers to predict the fatigue performance and service life of plastic parts. Very few design firms have this capability.
Our 5-Step Consulting Process
A proven methodology that keeps development projects on track toward reliable, cost-effective production.
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Understand the Problem
Deep-dive into the client's challenge — whether it's a new product concept, a failing existing product, or a cost reduction initiative.
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Examine & Analyze
Deploy FEA, mold flow analysis, material testing, and forensic techniques to build a complete picture.
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Develop Solutions
Engineer the optimal combination of material, design, and process.
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Implement
Advise on how best to implement solutions — from prototype testing to production ramp-up.
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Monitor & Maintain
Develop ways to monitor and maintain the solutions. Establish quality control systems and residual stress testing protocols.
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Technical Deep Dives
Key polymer science concepts every product developer and engineer should understand.
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Creep in Plastics
When non-crystalline parts are placed under constant stress, the plastic has a tendency to slowly deform or creep. The long polymer chain molecules are entangled with each other. The higher the level of entanglements, the greater the creep resistance — because it is more difficult to pull highly entangled polymer chains apart.
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Stress Relaxation
When plastic is injection molded, the melt is pumped under high pressure through a small hole in the mold. This forces long polymer chains to align in parallel. If the mold is cold, the plastic rapidly solidifies before chains can relax back to their preferred entangled state — creating 'residual stress.' When later heated, the chains relax and entangle back together, causing dimensional changes. This is stress relaxation.
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What types of plastic pipe failures do you analyze?
Remediation involves fixing what is causing a part to fail to stop future failures. The goal is to solve the problem as quickly and efficiently as possible. Rather than a total redesign, it may be possible to remediate with simply a slight modification to the design or the molding conditions.
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Regulatory Compliance (UL, FM, FDA, NSF)
If a product will be used for food contact, extraction studies must prove no toxic chemicals are extracted from the plastic. If containing electrical components, the plastic needs to be flame retardant and pass UL94 tests. It is best to consider regulatory requirements early in the development phase — not as a checkbox at the end.
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The Interplay of Additives
Most additives act as plasticizers and lower the temperature resistance of a plastic. Therefore, it is generally best to minimize additive concentration — use only the amount necessary to achieve service requirements. A UV stabilizer or colorant can inadvertently weaken the mechanical properties of a high-performance polymer.
Representative Engagements
Real-world consulting engagements that demonstrate our impact.
Packaging
Plastic Storage Bag Die Design
Used dynamic die modeling technology powered by high-speed supercomputers to design extrusion dies for different size bags. The dies performed flawlessly. The client told us we saved them millions.
Plumbing / Consumer
Toilet Flush Valve Failure Analysis
Glass-fiber reinforced PP flush valve failed in service. SEM revealed fiber orientation parallel to fracture. Mold flow analysis confirmed improper gate location caused the fiber alignment issue — proving a design/mold defect.
Manufacturing
Residual Stress Reduction Program
Developed quality control protocols for detecting residual stress using oven-based dimensional change measurements. Optimized fabrication processes to minimize stress, reducing field failure rates.
FAQ for Product Developers
Common questions from manufacturers and R&D teams considering plastic consulting.
⚠️ Additional FAQs pending SME responses — placeholder section
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We already have an internal engineering team. Why do we need an outside plastic consultant?
Internal investigators look at solving problems based on their limited past experiences. Our experts have extensive and diverse problem-solving experiences allowing them to look at problems and possible solutions from a different perspective. Specialization in polymer science — not general mechanical engineering — is what separates effective plastic consulting from guesswork.
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What is the most common cause of plastic product failure?
Environmental Stress Cracking (ESC) is the most common and most preventable cause. It occurs when an amorphous plastic is exposed to an incompatible chemical under stress. Material datasheets often lack chemical resistance details — which is why specialized testing (ASTM D543) is critical during material selection.
Start Your Project
Whether you're developing a new product, optimizing an existing design, or investigating a field failure — our team of polymer scientists and engineers is ready to help.
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+1 (989) 281-4465 |
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info@plasticexpert.com |
