Hey there, fellow buyers, sustainability nerds, and anyone who’s ever stared at a pile of plastic parts thinking “this can’t all be bad, right?” I’m Jake, and I’ve been running the ship at my little other plastic parts supplier for almost 8 years now. If you’re in manufacturing, product design, or even just someone who’s had to source small, random plastic bits that aren’t bottles or food wrap, you know “other plastic parts” is basically the catch-all category for stuff that doesn’t fit the big, overused plastic bins. Think the little plastic brackets that hold a fridge door shelf in place, the wire ties that keep a lawnmower’s wiring harness from flapping around, the tiny plastic spacers inside a car’s dashboard—those are the ones we deal with every day. Other Plastic Parts
For the longest time, I heard the same question over and over: “Jake, can your other plastic parts be biodegradable? Because all the big stuff is getting called out, and I don’t want my product’s plastic bits to be the thing that gets it rejected for being wasteful.” And honestly, for years, I had to say no. Back when I started, biodegradable plastics were either super weak, way more expensive, or only worked for single-use, thin items like grocery bags—not the rigid, functional other plastic parts that hold machinery together for years. But lately? That’s all changed. I’ve been testing every new biodegradable material that hits the market, talking to chemists, and working with our fabricators to figure out what actually works for our customers. Today, I’m breaking down if biodegradable options even exist for our side of the plastic industry, the real tea on how they work, what to actually avoid, and what I’ve learned in the field after 8 years of messing with plastic parts for everything from blenders to outdoor playground equipment.
First off, let’s clear up the biggest myth out there: not all “biodegradable plastic” is actually the same. You’ve probably seen the labels—some say “compostable,” some say “biodegradable,” some even say “oxo-biodegradable,” and a lot of brands slap those terms on anything that looks vaguely green. But when we’re talking about actual other plastic parts that need to hold up to daily use, extreme temperatures, rain, or being banged around in a warehouse for 5 years, this stuff isn’t one-size-fits-all.
Let’s start with the kind that actually works for our parts: bio-based biodegradable plastics. These are made from plant stuff—think corn starch, sugarcane, algae, even some types of mushroom mycelium—instead of crude oil. The key here is that they break down via microbes (bacteria, fungi) into natural stuff like CO2, water, and biomass, no weird toxic leftovers. The catch? They need specific conditions to break down, right? I used to think they’d melt if you left them in the dirt for a month, and while that’s not totally wrong, it’s not the full story. For these bio-based plastics to biodegrade properly, they need industrial compost conditions—think 140°F temperatures, high moisture, and a steady population of microbes. Regular backyard compost might be too cold or too dry to break them down fast, and if you toss one in a landfill, it’ll sit there basically forever, same as regular plastic, because landfills are airless and don’t have the microbes they need. That’s a bummer, but it’s way better than the old days where there was zero option for functional biodegradable other plastic parts.
Wait, but what about oxo-biodegradable plastics? I get why people ask about these—they’re cheaper, made from regular oil-based plastic with a little additive that’s supposed to make it break down. But here’s the thing I tell every customer who asks about these: stay far, far away for functional other plastic parts. Those additives only kick in after a certain amount of time, and they often break the plastic down into tiny microplastics, not actual harmless biomass. I tested a batch of oxo-biodegradable plastic brackets a few years back for a gardening company, and a year later, when their customers started finding tiny plastic shavings in their soil, they pulled every single product and never came back. It’s not worth the risk—your product’s reputation isn’t worth a bunch of microplastics ending up in someone’s garden or the ocean.
Now, the big question: do these bio-based biodegradable materials work as actual other plastic parts, not just flimsy trial pieces? Let’s talk about what we test for, because when you source other plastic parts, you need them to do a job, not just be green. For example, last year we had a customer making outdoor playground equipment—they needed tiny plastic lock washers that hold the metal frame bolts in place. Regular plastic washers would crack after a year of being in the sun and rain, metal washers would rust. We tried these new bio-based biodegradable polypropylene alternatives? Wait, no—actually, a lot of these are polylactic acid (PLA) based, but PLA gets brittle in cold weather, which is a problem for playgrounds in places like Minnesota. So we tested a blend of PLA and another bio-based polymer, polyhydroxyalkanoate (PHA)—that mix is way more flexible, holds up to UV light, and doesn’t get brittle when it’s 20°F outside. We supplied those lock washers, and this year, their quality control team sent us feedback that after 18 months, not a single one had cracked, and if those ever do end up in a compost facility, they’ll break down completely in about 180 days. That’s the kind of win we need.
Another example: we work with a small appliance brand that makes countertop blenders. They needed tiny plastic gears inside the blender’s motor housing—these gears spin thousands of times a minute, so they have to be durable, not melt, and not leach any chemicals into the food. We tested a different bio-based biodegradable material for these, called starch-blended polyethylene (not the cheap kind I tested years ago), and it worked perfectly. No melting when the blender runs for 10 minutes straight, no weird taste when they tested for leachables, and it’s biodegradable. The only catch? It’s about 15% more expensive than regular oil-based plastic gears. But for a brand that’s marketing itself as sustainable, that extra cost is worth it to avoid being the “bad plastic part” in a product that’s supposed to be eco-friendly.
But let’s be real—this isn’t a switch we can flip across all other plastic parts yet. Some other plastic parts just can’t be biodegradable right now, and that’s not a bad thing as long as you’re honest about it. For example, we make plastic parts for industrial machinery that has to operate in 300°F environments—no bio-based material can handle that kind of heat, because plant-based stuff starts to break down way before that. In cases like that, we work with customers to make their parts last longer, use less plastic overall, and when they do reach end of life, recycle them properly. That’s a middle ground that works, and it’s way better than forcing a biodegradable plastic part that will fail in 6 months just to check a “sustainable” box.
I also want to talk about the biggest mistake I see people make when sourcing biodegradable other plastic parts: greenwashing. A few years back, a big box hardware chain reached out wanting biodegradable plastic screws for their gardening section. They showed us a sample that had “biodegradable” printed on it, but when we tested it, it was just regular plastic with a tiny amount of corn starch mixed in—you could see the white flecks. That stuff would never break down properly, and it was priced almost the same as real biodegradable parts. We turned them down, because I don’t want to be part of that. If you’re going to go green with your other plastic parts, you need to do your research, not just take a supplier’s word for it. Ask for test data: what’s their breakdown time, what conditions do they need, do they have third-party certification (like BPI or OK Compost)? If a supplier can’t give you that, walk away.
So where do we go from here? I’ve been in this game long enough to see how fast biodegradable materials are improving. 5 years ago, we could only make small, simple plastic brackets with bio-based material. Now we can make gears, washers, even tiny structural parts that hold up to heavy use. Next year, we’re testing a new material made from recycled ocean plastic blended with biodegradable additives for parts that don’t need to be 100% biodegradable, but need to be more sustainable than regular oil-based plastic. It’s not perfect, but it’s a step in the right direction.
If you’re reading this and you’re someone who sources other plastic parts—whether you’re a product designer at a startup, a procurement manager at a manufacturing plant, or a small business owner putting together a new product—this is where we come in. I don’t do hype. I don’t sell you a cheap plastic part that falls apart or breaks all your rules. I test every material, I tell you the good, the bad, and the ugly, and I give you options that actually work for your needs.
Plastic Parts At the end of the day, other plastic parts don’t have to be the enemy. We just need to stop treating them like an afterthought, and start looking for materials that are actually sustainable, actually work, and don’t pretend to be something they’re not. If you’ve been on the hunt for biodegradable other plastic parts, or you’re tired of the same old oil-based stuff that ends up in a landfill in 10 years, hit us up to chat. We’ll send you test samples, break down the costs, and figure out what’s right for your product.
References
- European Commission. (2021). Biodegradable and Compostable Plastics: A Guide for Businesses.
- American Society for Testing and Materials (ASTM). (2022). Standard Specification for Compostable Plastics (D6400).
- Environmental Protection Agency (EPA). (2023). Plastic Waste Reduction: Biodegradable and Compostable Plastics.
- Institute of Packaging Professionals. (2022). Sustainable Packaging for Non-Food Industrial Components.
- National Institute of Standards and Technology (NIST). (2021). Performance of Biodegradable Polymers in Outdoor Applications.
Jiangsu Xinhuasheng Packaging New Materials Co., Ltd.
Jiangsu Xinhuasheng Packaging New Materials Co., Ltd. is one of the most professional other plastic parts manufacturers and suppliers in China, featured by quality products and low price. Please rest assured to wholesale durable other plastic parts in stock here and get quotation from our factory. Customized orders are welcome.
Address: No. 5 Tieta Road, Industrial Park, Guyang Town, Dantu District, Zhenjiang City, Jiangsu Province, China.
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