Polypropylene (PP) Injection Molded Plastic Recycling
Polypropylene (PP) is a versatile, widely used thermoplastic polymer found in countless industrial and commercial applications. From automotive parts and industrial caps to regrind and virgin pellets, injection molded polypropylene is a critical material across industries. When excess or scrap PP is produced in manufacturing environments, Seraphim Plastics offers a profitable, eco-friendly solution for reclaiming value through recycling.
As a commercial-only post-industrial plastic recycler, we buy, collect, and process injection molded polypropylene from businesses across the U.S. Our recycling operations help manufacturers turn scrap into revenue—while reducing landfill waste and supporting a more sustainable supply chain.
This page details the types of PP injection molded plastics Seraphim Plastics accepts, how materials should be prepared, and why working with us delivers long-term value for industrial operations.
What Is Polypropylene (PP)?
Polypropylene is a semi-crystalline thermoplastic made from the polymerization of propylene monomers. Injection molded PP is known for its balance of strength, flexibility, chemical resistance, and high melting point, making it ideal for products that require durability and structural integrity.
Key Properties of PP:
- High tensile strength and fatigue resistance
- Excellent chemical and moisture resistance
- Good impact strength
- Suitable for high-temperature applications
- Easy to recycle and reuse in pellet or regrind form
Types of PP Injection Molded Scrap We Accept
Seraphim Plastics purchases a wide range of injection molded polypropylene products and by-products from industrial manufacturing, packaging, logistics, and molding operations.
1. Plastic Pallets (PP)
While HDPE is more common for pallets, PP injection molded pallets are widely used in certain industries for their enhanced chemical resistance, lower weight, and excellent strength-to-weight ratio.
We accept:
- Standard size injection molded PP pallets
- Custom-molded PP pallet designs
- Broken, discontinued, or damaged pallets
Accepted Conditions:
- Must be 100% polypropylene
- Free of metal inserts, RFID chips, or contamination
- Clean and dry, stacked or boxed in gaylords
PP pallets are commonly used in food, pharmaceutical, and cleanroom environments, and represent a significant opportunity for cost recovery through recycling.
2. PP Caps and Closures
Injection molded caps and closures are some of the most common polypropylene parts used in commercial packaging for products like:
- Bottled water and beverages
- Detergents and cleaners
- Health and beauty products
- Pharmaceuticals and chemicals
We accept:
- Clean post-industrial caps and closures
- Excess or off-spec production runs
- Color-sorted or mixed-color caps
- Lined and unlined caps (liners must be removed)
Material Requirements:
- Must be clean and free from adhesive or foil seals
- Single-resin (PP only)
- Preferably packed in gaylords or boxes for transport
These lightweight components are ideal for shredding and pelletizing, providing a high-recovery yield in recycling operations.
3. Injection Molded PP Parts
Injection molded polypropylene is used to manufacture a wide array of parts across industries, including:
- Automotive parts and panels
- Containers and bins
- Housings and enclosures
- Furniture components
- Electronic parts
Seraphim Plastics accepts:
- Discontinued or obsolete product lines
- Off-spec or rejected molded parts
- Broken or defective components from quality control
Accepted Materials Must Be:
- 100% polypropylene (no blends or additives)
- Free from metal inserts, coatings, or contaminants
- Ideally boxed, bagged, or palletized for pickup
We can handle both one-time purges and ongoing part scrap from injection molding facilities and contract manufacturers.
4. PP Purge (Lumps and Chunks)
Purge is the solidified plastic discharged from injection molding equipment during color changes, material changes, or cleanouts.
We buy:
- Cold purge lumps and chunks
- Machine purge slabs
- Mixed-color or off-color purge (as long as it’s PP)
Specifications:
- Must be 100% PP (no co-polymers or blends unless specified)
- No embedded contaminants, oils, or metal
- Ideal for grinding and reprocessing
Purge is an excellent feedstock for recycling, especially in applications where material color is not a concern.
5. Polypropylene Regrind
Regrind is ground-up plastic material, typically generated from clean post-industrial parts, runners, or scrap. It’s a ready-to-use feedstock for injection molding and extrusion.
We accept PP regrind that is:
- Uniform in size (3/8” or smaller preferred)
- Clean and dry
- Free from dust, debris, or label residue
- Sorted by color (natural, white, black, mixed)
Packaging Options:
- Super sacks
- Boxes or gaylords
- Clearly labeled by resin type and color
We often work with in-house grinders and plastic processors looking to offload excess regrind material from manufacturing operations.
6. PP Pellets
We purchase both virgin and post-industrial recycled polypropylene pellets, commonly produced by:
- Resin manufacturers
- Compounders
- Plastic processors with surplus or off-spec product
Accepted Pellets Include:
- Virgin polypropylene pellets
- Recycled PP pellets (from injection molded products)
- Off-color, off-spec, or overstock pellets
Pellets should be:
- Packaged in 25–50 lb bags, super sacks, or gaylords
- Clearly marked by resin type, MFI, and color (if available)
- Free from dust, moisture, or degradation
We help keep excess inventory moving and provide a sustainable outlet for misruns and downgraded stock.
7. Virgin Off-Spec Polypropylene
We also accept off-spec virgin PP, which may not meet tight OEM specs but is still valuable for use in secondary or non-critical applications.
Common sources include:
- Missed melt flow index
- Incorrect color
- Cosmetic defects
- Slight formulation inconsistencies
This material can be blended with regrind or used for less-sensitive applications like bins, crates, or structural parts. If you're sitting on tons of off-spec PP, we’ll help you monetize it while keeping it out of the landfill.
8. Polypropylene Crates We Buy
We accept most clean, industrial-grade injection molded PP crates and totes, including:
- Rigid stackable crates and bins
- Collapsible or knock-down totes
- Attached-lid containers (ALCs)
- Food-grade PP storage crates
- Heavy-duty reusable shipping containers
- Parts crates and picking bins
Cracked, obsolete, or off-spec totes
How to Prepare Polypropylene Scrap for Pickup
To ensure smooth pickup and maximum return, follow these guidelines:
✅ Sort by Type and Resin
Separate PP injection molded scrap from HDPE, PET, or other polymers. Sorting ensures quality and consistent grading.
✅ Remove Contaminants
No metal inserts, adhesives, labels, liners, or foil. Materials must be clean and dry.
✅ Package Securely
- Caps/parts: boxed or in gaylords
- Purge: boxed or palletized
- Regrind/pellets: super sacks or clearly labeled boxes
✅ Label Everything
Clearly identify resin type (PP), form (pellet, regrind, caps, etc.), color, and origin if applicable. This reduces delays and ensures accurate grading and pricing.
Why Recycle PP Injection Molded Scrap with Seraphim Plastics?
✅ We’re Commercial-Only
We focus strictly on post-industrial plastic recycling, not consumer recyclables. That means faster processing, higher-quality material, and better pricing for our industrial clients.
✅ You Get Paid
We pay you fair market value for your polypropylene scrap. Instead of paying to dispose of excess plastic, turn it into a revenue stream.
✅ Nationwide Service
We operate across Tennessee, Michigan, Kentucky, Alabama, Arkansas, Mississippi, Missouri, Georgia, Indiana, and Texas—and growing. If you produce large volumes of PP scrap, we’ll come to you.
✅ Sustainability Matters
Recycling polypropylene supports circular manufacturing by reducing the need for virgin resin, lowering carbon emissions, and minimizing landfill waste.
Who Should Work with Us?
- Injection molding manufacturers
- Resin producers and compounders
- Packaging suppliers and distributors
- Automotive parts manufacturers
- Industrial cap and closure producers
- Cleanroom pallet and container providers
If you produce consistent polypropylene waste streams or are looking to clean out obsolete inventory, we provide a turnkey solution—from pickup to payment.
How the Process Works
Step 1: Contact Us
Submit a quick form on our Request a Quote page. Include the material type, volume, condition, and your location.
Step 2: Get a Quote
We assess your material and provide a competitive offer based on resin quality, packaging, and market conditions.
Step 3: Arrange Pickup
We handle freight arrangements for qualifying loads. All you need to do is prepare the materials for transport.
Step 4: Get Paid
Once your material is received and verified, we send payment promptly. We pride ourselves on honesty, transparency, and long-term relationships.
The Bottom Line
If your company produces injection molded polypropylene scrap, you don’t need to let it pile up or waste money on landfill disposal. Seraphim Plastics buys and recycles:
- Plastic PP pallets
- Caps and closures
- Molded parts and components
- Purge and runners
- Regrind and pellets
- Virgin off-spec polypropylene
Our goal is to help you turn plastic waste into a profitable asset—all while promoting sustainable manufacturing practices.