Recycling & Processing
Zero-Waste Corrugated Recycling
Corrugated cardboard is the single most recycled packaging material on Earth — with a recovery rate exceeding 90% in the United States. Seattle Boxes makes that number even better with comprehensive recycling programs that prioritize reuse first and responsible recycling second, ensuring zero usable material reaches a landfill.
Our Process
Eight-Stage Recycling Pipeline
Our process goes far beyond basic collection and baling. Each stage is designed to extract maximum value from your corrugated material — diverting reusable boxes before they ever reach the baler, and ensuring every recyclable fiber reaches a domestic mill.
Collection & Pickup
We deploy scheduled or on-demand collection from your facility using our fleet of box trucks and flatbeds. Containers, roll-offs, and compactor servicing available for high-volume generators. We work around your dock schedule to minimize disruption.
Weighing & Documentation
Every load is weighed on our certified truck scales at intake. Weigh tickets, bills of lading, and chain-of-custody records are generated automatically. This documentation forms the basis of your recycling certificates and diversion reports.
Initial Sorting
Incoming material is separated into primary streams: reuse-grade boxes, reprocessable material, clean recyclable OCC, contaminated corrugated, and non-fiber contaminants. This first pass determines the highest-value destination for each piece.
Reuse Diversion
Boxes that qualify for resale or reprocessing are diverted before they ever reach the baler. This step is what separates us from commodity recyclers — we extract maximum value from material that others would simply pulp.
Contaminant Removal
Plastic tape, metal staples, stretch wrap, foam inserts, and other non-fiber contaminants are separated from the recyclable stream. These materials are sorted for their own recycling channels where possible.
Baling & Compaction
Recyclable corrugated is baled to mill specifications using our horizontal baler. Standard bale sizes conform to domestic mill requirements (approximately 60" x 30" x 42", 1,000-1,200 lbs). Bales are wire-tied and weighed with full documentation.
Quality Control & Grading
Finished bales are inspected for contamination levels, moisture content, and fiber quality. Bales are graded according to ISRI (Institute of Scrap Recycling Industries) standards — primarily OCC Grade 11 (old corrugated containers).
Mill Shipment & Repulping
Baled OCC is shipped to regional paper mills where it is repulped, de-inked, and remanufactured into new corrugated linerboard and medium. We maintain relationships with multiple domestic mills to ensure reliable offtake regardless of market conditions.
Materials Accepted
What We Recycle
We accept a wide range of fiber-based packaging materials. Each material type has a different recyclability rate and processing pathway. If you are unsure whether your material qualifies, contact us — we will assess it at no charge.
| Material | Recyclability | Details |
|---|---|---|
| Old Corrugated Containers (OCC) | 95%+ | Single-wall, double-wall, and triple-wall corrugated boxes, sheets, and pads of any size. Our primary feedstock. |
| Kraft Paper & Bags | 90%+ | Brown kraft paper, paper bags, and kraft wrapping materials. Must be free of wax coatings and plastic liners. |
| Corrugated Pallets & Displays | 90%+ | Corrugated point-of-sale displays, pallet wraps, and corrugated pallet structures. |
| Chipboard & Paperboard | 85%+ | Cereal boxes, shoe boxes, and other lightweight paperboard. Accepted in small quantities mixed with OCC loads. |
| Mixed Paper (Limited) | 80%+ | Office paper, newsprint, and magazines accepted in small quantities when co-mingled with OCC loads. Not accepted as standalone loads. |
| Waxed Corrugated | 70% | Wax-coated corrugated (common in produce and seafood) accepted separately. Processed through specialized channels due to mill restrictions. |
| Contaminated Corrugated | 60-80% | Grease-stained, food-soiled, and lightly contaminated corrugated accepted. Heavily contaminated material may incur processing surcharges. |
| Wet-Strength Corrugated | 50-65% | Corrugated treated with wet-strength additives (common in refrigerated supply chains). Requires specialized repulping and is accepted at reduced rates. |
| Corrugated with Plastic Lamination | 40-55% | Corrugated with thin plastic film lamination. Accepted but processed separately due to lamination removal requirements. |
| Printed Corrugated (Heavy Ink) | 85%+ | Heavily printed boxes with full-coverage ink. Accepted at standard rates — ink is removed during the de-inking phase of repulping. |
| Corrugated Tubes & Cores | 90%+ | Paper tubes, cores, and cylinders made from spiral-wound corrugated or kraft. Accepted and processed with standard OCC. |
Contamination Guide
What Makes Boxes Non-Recyclable
Not all contaminants are equal. Some have minimal impact and are easily handled during processing, while others can compromise entire bales. Understanding contamination helps you improve your diversion rate and get better pricing on your recycling program.
| Contaminant | Effect on Recyclability | Our Approach |
|---|---|---|
| Plastic Tape & Labels | Minor — removed during sorting. Does not affect recyclability of the corrugated itself. | Accepted as-is. No removal necessary before collection. |
| Metal Staples & Fasteners | Minor — separated magnetically during processing. Does not contaminate fiber. | Accepted as-is. Staples are extracted and recycled separately. |
| Stretch Wrap & Plastic Film | Moderate — must be separated before baling. Can clog mill equipment if not removed. | Remove if possible before collection. Otherwise separated during sorting. |
| Foam Inserts & Packaging | Moderate — non-recyclable with corrugated. Must be separated completely. | Remove before placing corrugated in collection stream if possible. |
| Food Residue (light) | Minor — light grease or food contact is acceptable to most mills at low concentrations. | Accepted. Pizza boxes, light food contact corrugated are fine. |
| Food Residue (heavy) | Significant — heavy grease saturation, standing liquid, or food debris can contaminate entire bales. | Accepted separately at reduced rates. May incur processing surcharge. |
| Moisture / Water Damage | Significant — wet corrugated loses structural integrity and can develop mold, making it unacceptable to mills. | Accepted if dried. Actively wet or moldy material accepted at recycling-grade only. |
| Chemical Contamination | Critical — certain chemicals make corrugated non-recyclable and potentially hazardous. | Must be disclosed at time of collection. Hazmat-contaminated material is not accepted. |
| Wax Coating | Significant — wax does not dissolve during repulping and contaminates standard OCC bales. | Accepted separately. Processed through specialized waxed-corrugated recycling channels. |
Environmental Metrics
Resource Savings Per Ton Recycled
These metrics quantify the environmental benefit of recycling corrugated compared to manufacturing new corrugated from virgin fiber. All figures are based on EPA lifecycle analysis data and verified against industry benchmarks.
| Resource | Recycled Production | Virgin Production | Savings |
|---|---|---|---|
| CO2 Emissions | 1.5 metric tons avoided | 2.8 metric tons produced | 46% reduction |
| Water Usage | 7,000 gallons used | 24,000 gallons used | 71% reduction |
| Energy Consumption | 2,600 kWh | 4,100 kWh | 37% reduction |
| Trees Preserved | 0 trees consumed | 12-17 trees per ton | 100% preservation |
| Landfill Space | 0 cubic yards | N/A (new product) | 3.3 cubic yards saved |
| Chemical Usage | Minimal processing chemicals | Sulfate/sulfite pulping chemicals | 80%+ reduction |
Our Annual Impact
Measurable Results
These are not aspirational goals — they are measured outcomes from our recycling and reuse operations over the past 12 months. Every metric is backed by weigh-ticket data, mill acceptance records, and lifecycle analysis calculations.
2,400+
Tons of corrugated diverted from landfill annually
92%
Overall material recovery rate across all incoming loads
3,600+
Mature trees saved per year through our recycling program
14M
Gallons of water conserved annually vs. virgin fiber production
8,200
MWh of energy saved yearly compared to new corrugated manufacturing
1,800
Metric tons of CO2 emissions avoided per year
Recycling vs. Reuse Decision Tree
Both recycling and reuse are environmentally superior to landfilling, but they are not equal. We apply a consistent decision framework to every piece of corrugated that enters our facility:
- 1.Can it be resold as-is? If structurally sound and clean enough for Grade A-C, it goes to our used box inventory for resale.
- 2.Can it be reprocessed? If repairable, resizable, or reconditionable, it goes to our reprocessing facility for refurbishment.
- 3.Is it clean enough for standard recycling? Clean OCC goes to our baler and ships to domestic mills for repulping.
- 4.Does it require specialized processing? Waxed, laminated, or wet-strength material goes to specialized recycling partners.
- 5.Is it compostable? Heavily contaminated material that cannot be recycled may be diverted to commercial composting.
This hierarchy ensures maximum environmental benefit and value extraction at every stage. Only material that truly cannot serve any productive purpose is considered waste — and even then, we seek alternative channels before landfill.
Zero-Waste Goals
Our operational target is zero corrugated waste to landfill — and we are close. Our current overall material recovery rate stands at 92%, with the remaining 8% consisting primarily of non-fiber contaminants (plastic tape, metal staples, moisture-damaged material exceeding mill contamination thresholds) that must be separated before baling.
We are actively investing in processes to push recovery toward 95% by 2027:
- Contamination reduction: Working with suppliers to minimize non-fiber contaminants at the source through education and incentive programs.
- Wet-strength recovery: Piloting processes to salvage moisture-damaged corrugated that currently fails mill acceptance criteria.
- Alternative uses: Partnering with composting facilities and animal bedding producers to find productive uses for material that cannot be recycled through traditional paper mill channels.
- Contaminant recycling: Developing partnerships for recycling the separated plastic tape, stretch wrap, and metal staples through appropriate non-fiber recycling channels.
When your business works with Seattle Boxes, you become part of this zero-waste mission. We provide full transparency into where your material goes and what happens to it at every stage.
Compliance
Certifications & Regulatory Compliance
Operating a commercial recycling facility requires adherence to federal, state, and local regulations. We maintain full compliance with all applicable requirements and exceed minimum standards in several areas.
Washington State Recycling Compliance
Our operations meet all Washington State Department of Ecology requirements for commercial recycling processors. We maintain current permits and submit required reporting on schedule.
King County Solid Waste Compliance
Compliant with King County Solid Waste Division regulations including facility permits, stormwater management, and commercial recycling mandates.
ISRI Member Standards
We follow Institute of Scrap Recycling Industries (ISRI) grading standards for OCC bales, ensuring our output meets domestic mill acceptance criteria.
EPA Guidelines Adherence
Our documentation and reporting formats align with EPA Resource Conservation and Recovery Act (RCRA) guidelines for solid waste recycling operations.
Stormwater Management
Our facility stormwater systems exceed King County environmental requirements with covered processing areas, containment berms, and regular monitoring.
Chain of Custody Documentation
Full traceability from point of collection to final processing. Every load is documented with weigh tickets, BOLs, and mill acceptance confirmations.
Business Programs
Recycling Partnerships for Businesses
We offer four program tiers to match your volume, budget, and sustainability goals. Every program includes free setup, waste audit, and initial consultation.
Recurring Collection Program
Scheduled weekly or bi-weekly collection from your facility. Dedicated container placement, route-day consistency, and automated reporting. Best for businesses generating 1+ ton per month.
- Scheduled route days
- Dedicated containers
- Monthly reporting
- Locked-in pricing
Zero-Waste Partnership
Comprehensive program designed to help your business achieve zero corrugated waste to landfill. Includes waste audit, sorting training, collection, and full documentation.
- Free waste audit
- Staff training materials
- Quarterly reviews
- ESG-ready reporting
On-Demand Collection
Flexible pickup service for businesses with variable or seasonal corrugated volumes. Call when you need collection — no schedule commitment required.
- No commitment required
- Same-day available
- Pay per collection
- Volume-based pricing
Compactor & Baler Service
For high-volume generators, we can provide, maintain, and service on-site compactors or balers. Reduces your storage needs and maximizes per-collection efficiency.
- Equipment provided
- Maintenance included
- Swap-out service
- Bale pickup scheduling
Case Study
Zero-Waste Success: Regional Distribution Center
E-commerce fulfillment
Challenge
A 200,000 sq ft distribution center in Kent, WA was generating approximately 8 tons of corrugated waste per week — all going to a single-stream recycling vendor at commodity OCC rates with no sustainability documentation.
Solution
Seattle Boxes implemented a comprehensive program: twice-weekly collection, on-site sorting consultation, reuse diversion for approximately 30% of material (clean boxes redirected to our resale inventory), and full recycling with chain-of-custody documentation for the remainder.
Results
- Revenue increased 340% — from $0.04/lb (commodity recycling) to $0.18/lb average (blended reuse + recycling rates)
- Diversion from recycling to reuse stream saved an additional 1,200 trees and 4.2M gallons of water annually
- Quarterly ESG reports enabled the parent company to claim verified corrugated sustainability metrics for the first time
- On-site sorting consultation reduced contamination rate from 12% to 3%, improving bale quality and mill acceptance rates
Documentation
Recycling Certificates & Reporting
Sustainability claims require documentation. We provide comprehensive recycling certificates and sustainability reports that meet the evidentiary requirements of major ESG frameworks, corporate sustainability programs, and regulatory compliance.
Certificate of Recycling
Issued per load or on a monthly/quarterly basis. Documents material type, weight, date of processing, and downstream destination (mill identification).
Diversion Reports
Quarterly reports showing total material collected, reuse diversion rate, recycling volume, and landfill diversion percentage for your account.
Environmental Impact Statement
Annual summary of estimated environmental savings — trees preserved, water conserved, energy saved, and CO2 emissions avoided — based on your actual volumes.
Chain of Custody
Full traceability from your dock to the processing facility to the paper mill. Includes weigh tickets, BOLs, and mill acceptance confirmations.
Compliance Documentation
Documentation formatted for Washington State recycling mandates, King County waste reduction requirements, and federal EPA reporting guidelines.
Custom Reporting
Need specific data points for your sustainability team? We build custom reports to match your internal reporting frameworks and ESG disclosure requirements.
All documentation is available digitally and in hard copy. Automated monthly reporting is included at no additional cost for accounts with recurring service.
Mill Partnerships
We maintain direct relationships with domestic paper mills rather than selling through intermediary brokers. This matters for three reasons:
- Traceability: We know exactly which mill processes your material, and we can document it.
- Domestic processing: Your corrugated stays in the United States. We do not export OCC to overseas markets where processing standards and labor practices may not meet our criteria.
- Reliability: Direct mill relationships mean we always have offtake capacity — even when commodity markets are soft and brokers are turning away material.
Our Facility
Our processing facility in the greater Seattle area is purpose-built for corrugated handling and recycling:
- Horizontal baler capable of processing up to 8 tons per hour.
- Covered sorting area to protect material from weather damage during grading.
- Certified truck scales for accurate weigh-in and weigh-out documentation.
- Dedicated reprocessing area for box repair, resizing, and refurbishment.
- Stormwater management systems that exceed King County environmental requirements.
- Roll-off container fleet for high-volume customer deployments (20, 30, 40 cubic yards).
Recycling FAQ
Common Questions About Recycling
What is the difference between your service and municipal recycling?
Municipal recycling programs are designed for residential curbside collection and process multiple material streams. Our service is purpose-built for commercial corrugated generators. We offer higher payouts (because we divert reusable material), faster turnaround, dedicated containers, chain-of-custody documentation, and sustainability reporting that municipal programs do not provide. We also guarantee domestic processing — your material never gets exported.
Do you charge for recycling collection?
For accounts generating 1+ ton per month, collection is free. For smaller volumes, a modest collection fee may apply, or you can drop off at our facility at no charge. In many cases, the buyback value of reuse-grade material in your stream offsets or exceeds any collection costs, resulting in a net payment to you.
How do I start a recycling program with you?
Contact us to schedule a free waste audit. We visit your facility, assess your corrugated volume and composition, identify reuse diversion opportunities, recommend container sizes and collection frequency, and provide a detailed service proposal. The entire setup process typically takes 5-7 business days from initial contact to first collection.
Can you handle our waxed corrugated separately?
Yes. Waxed corrugated (common in produce, seafood, and refrigerated supply chains) cannot be mixed with standard OCC because wax contaminates the repulping process. We collect waxed corrugated in separate containers and process it through specialized channels that can handle the wax component. Waxed corrugated recycling rates are lower than standard OCC, but we ensure it stays out of the landfill.
What reporting do you provide for ESG disclosures?
We provide comprehensive sustainability documentation including: Certificates of Recycling (per load or monthly), Diversion Reports (quarterly), Environmental Impact Statements (annual), and Chain of Custody documentation (per load). All reports are formatted to support GRI Standards, CDP disclosures, SASB metrics, and corporate sustainability report requirements. Custom formatting is available for specific ESG frameworks.
What happens during soft OCC markets when prices drop?
Because we maintain direct relationships with multiple domestic mills rather than selling through brokers, we always have offtake capacity regardless of market conditions. During soft markets, commodity pricing decreases, but our reuse diversion program provides a price floor that pure recyclers cannot match. We also offer fixed-rate contracts for accounts that prefer pricing predictability over market-rate fluctuations.
Start Your Recycling Program
Whether you generate one pallet a week or ten truckloads a month, we have a recycling solution that fits. Contact us for a free waste audit and service proposal.