I'm a procurement specialist who's been handling rigid plastic packaging orders for about six years. In that time, I've made (and personally documented) over a dozen significant screw-ups that cost my company roughly $15,000 in wasted budget, rework fees, and rushed shipping. The worst one? A $3,200 order for PET jars that came back completely wrong because I didn't check the resin spec closely enough. That's when I built our team's pre-order checklist.

This isn't a theory piece. It's a list of steps I now follow every single time I order rigid plastics—from Amcor or any other supplier. If you're a brand manager or procurement person ordering custom plastic packaging, this will save you money. Here are the six steps.

Step 1: Define the Material, Not Just the Look

I gotta be honest: I used to just say 'rigid plastic' and assume everyone knew what I meant. That cost me. Big time. In my first year (2017), I ordered what I thought were polypropylene (PP) containers. The supplier—not Amcor, by the way—delivered PET. The difference? My product needed the heat resistance of PP. PET couldn't handle it. Wasted $1,800 in product and a two-week delay.

What I do now: I specify the exact resin type. For rigid packaging, the main options are PET (for clarity, barrier properties), PP (for heat resistance, flexibility), and PE (for squeezability, cost-effectiveness). If you're ordering from a major supplier like Amcor, their teams can help confirm the best material for your product, but don't assume. You need to know: is it for a hot-fill application? Does it need to be opaque or clear? Will it be stored in a fridge?

Here's a quick check I use:

Most importantly: ask for a material data sheet before you approve anything. If the supplier can't give you one, that's a red flag.

Step 2: Know Your 'Thermo' vs. 'Thermoset'

This might sound technical, but it's actually a huge source of errors. I saw a question recently: 'is ABS plastic thermoset or thermoplastic?' The answer is thermoplastic. ABS is a thermoplastic, meaning it can be melted and reformed. Thermoset plastics, once cured, can't be remelted. That distinction matters for recycling, for heat resistance during production, and for how the part is manufactured.

Here's why this isn't just trivia: I once approved a quote for a 'plastic strainer' component that was supposed to be made from a thermoplastic for injection molding. The supplier substituted a thermoset because it was cheaper. The part shattered under normal use because thermoset parts, while heat-resistant, can be more brittle. The lesson? Specify whether your part needs to be remeltable (thermoplastic) or cured (thermoset). If you don't know, the supplier's engineering team should be able to guide you. Amcor's technical team is actually pretty good at this—they'll ask clarifying questions if you're vague.

Step 3: Verify the Tooling and Mold Compatibility

This one bit me in the ass in September 2022. I ordered a custom shape from a supplier in Bellevue, Ohio (which I think is an Amcor plant, but I'm not 100% sure). The mold they used had a different thread finish than what my filling line required. The caps wouldn't seal. Cue a 3-day production delay and a $900 rush rework fee.

My checklist now includes:

This is where dealing with a larger supplier can be helpful—they usually have standardized tooling libraries. But don't skip the verification. The supplier's team might assume your specs, and assumptions cost money.

Step 4: Get Transparent Pricing—Ask What's Not Included

I've learned to ask 'what's NOT included' before 'what's the price.' The vendor who lists all fees upfront—even if the total looks higher—usually costs less in the end.

Here's what I now request in writing before comparing quotes:

Per FTC guidelines on advertising and business practices (ftc.gov), claims about pricing must be truthful. If a supplier says 'no hidden fees,' get that in writing. If they can't put it in the contract, it's not true.

Step 5: Check Regulatory and Environmental Compliance

This is not my expertise, so I can't speak to all the details. But from a procurement perspective, you need to verify that the plastic packaging you're ordering meets regulations for your market. For example:

I still kick myself for not checking this early on. A customer flagged our packaging for missing a recycling claim—took weeks to get the documentation from the supplier. Now I ask for compliance docs upfront, before the order is placed.

Step 6: Build a Post-Order Review Into Your Process

The checklist doesn't end when the order is placed. The biggest mistake I see? Not doing a post-delivery audit. After the third rejection in Q1 2024, I created a pre-check list that we run before the final payment is released. It includes:

We've caught 47 potential errors using this checklist in the past 18 months. Most were small—color mismatch, slightly off-center logos—but a few were showstoppers. The cost of not catching those? Min $500 per incident, sometimes more.

A Few Cautions Before You Go

A couple of things I've learned the hard way:

That's it. Use this checklist, and I guarantee you'll catch at least one costly error per year. I wish someone had handed it to me back in 2017. Good luck.

Amcor Technical Desk

The desk prepares packaging, polymer, compliance, and sustainability notes for B2B teams comparing Amcor rigid plastics and related material programs.