science

Box Labs

EST. 2024
ECO · SUSTAINABLE · FSC CERTIFIED

Eco-Friendly
Packaging
Done Right.

Natural kraft boxes, FSC-certified substrates, recycled-content corrugated, soy-based inks, and compostable pouches — with specific, verifiable sustainability credentials. No minimum order. No setup fees. 48-hour quote.

No minimum order
FSC certification available
Curbside recyclable formats
Verified claims — no greenwashing
100%
Paper-based formats curbside recyclable
FSC
Certified substrate options available
Soy
Based inks — low VOC across all formats
1
Minimum order — prototype before scaling
// DEFINITION

What makes packaging genuinely eco-friendly?

The term "eco-friendly" on packaging is legally meaningless without a specific, verifiable claim behind it. Under the FTC Green Guides (USA) and the EU Green Claims Directive, generic environmental claims that cannot be substantiated are misleading — and regulators are increasingly enforcing this.

Genuinely sustainable packaging achieves environmental benefit through one or more of the following: certified responsible fibre sourcing (FSC or SFI), recycled content (post-consumer or post-industrial fibre), recyclability (accepted in curbside programmes without special infrastructure), low-impact inks (soy-based or water-based rather than petroleum), or reduced material use through right-sizing.

At CustomBoxesLabs, every sustainability option comes with documentation — FSC chain-of-custody certificates, recycled content percentages, or ink specification sheets — so the claims you make on your packaging and in your marketing are verifiable. We do not sell "eco-friendly" as a brand attribute. We sell specific, documented material specifications.

Full guide: How to Switch to Sustainable Packaging Without Hurting Your Margins.

// ECO FORMATS

Sustainable packaging formats

Every format below is available with FSC-certified substrates, recycled content options, and soy-based inks. Specific sustainability credentials are confirmed in your 48-hour quote.

FORMAT_01 · MOST RECOGNISABLE
Natural Kraft Boxes

Unbleached kraft corrugated and paperboard — the format most immediately associated with sustainable packaging by consumers. The brown material communicates natural, minimal, and unprocessed before any text is read. Available in mailer boxes, shipping cartons, folding cartons, and rigid boxes. Natural kraft liner uses fewer chemical processing steps than bleached white liner.

CURBSIDE RECYCLABLEFSC AVAILABLELOW BLEACH
View kraft boxes
FORMAT_02 · DTC ECO STANDARD
Recycled-Content Mailer Boxes

Standard corrugated mailer boxes manufactured with recycled-content liner — CRB (clay-coated recycled board) or recycled kraft liner. Post-consumer recycled fibre content typically 60–80%. Print quality is slightly reduced versus virgin white liner, which is acceptable for most branded applications and preferred by eco-positioned brands. FSC Recycled certification available.

CURBSIDE RECYCLABLE60–80% RECYCLEDFSC RECYCLED
View mailer boxes
FORMAT_03 · B2B & FREIGHT ECO
Recycled Corrugated Shipping Boxes

RSC and custom shipping boxes manufactured from recycled-content corrugated board. CRB medium and recycled liners maintain ECT structural performance (32–51 ECT) equivalent to virgin corrugated for most applications. The most common sustainable packaging transition for e-commerce and wholesale brands — typically cost-neutral or cost-saving versus virgin corrugated.

CURBSIDE RECYCLABLERECYCLED CONTENTCOST NEUTRAL
View shipping boxes
FORMAT_04 · RETAIL ECO
Sustainable Folding Cartons

SBS or CRB folding cartons with FSC-certified substrate, water-based barrier coating (instead of PE for food applications), and soy-based inks. Water-based barrier coatings maintain food-contact performance while keeping the carton curbside recyclable — PE-coated cartons are not. The correct specification for food and personal care brands with recyclability commitments and retail distribution.

CURBSIDE RECYCLABLEWATER-BASED BARRIERSOY INKS
View folding cartons
FORMAT_05 · LUXURY ECO
FSC-Certified Rigid Boxes

Premium rigid boxes manufactured with FSC-certified greyboard and FSC-certified wrap paper. The luxury packaging format with documented responsible sourcing — the combination required by prestige retailers and corporate gifting programmes with sustainability procurement requirements. Soft-touch laminate and foil stamping are available with FSC-certified substrates throughout.

FSC 100% AVAILABLERECYCLABLE GREYBOARDPREMIUM SPEC
View rigid boxes
FORMAT_06 · COMPOSTABLE
Compostable Flexible Pouches

PLA-based flexible pouches certified to industrial composting standards (EN 13432 / ASTM D6400). Correct for food brands, supplements, and personal care products where the product requires flexible film packaging and the brand's customer base has access to industrial composting infrastructure. Not suitable as a general sustainability upgrade — compostable claims require verifiable end-of-life infrastructure. Read the full compostable guide.

EN 13432 CERTIFIEDPLA FILMINDUSTRIAL COMPOST
Contact us to specify
// COST COMPARISON

What sustainable packaging actually costs

The most common concern about switching to sustainable packaging is cost. Some transitions are genuinely cost-neutral or cheaper. Others carry a real premium. Here is the accurate picture.

TRANSITION_01
Recycled-content corrugated

Cost vs virgin corrugated: −5% to +5%. Often cheaper at equivalent ECT ratings. The easiest and most cost-effective sustainable transition for most e-commerce and wholesale brands. No lead time impact.

TRANSITION_02
FSC-certified substrates

Cost premium vs non-certified: +5–15%. Applies across all paper formats. Justified when your retail channel requires it or when the FSC mark is a commercial differentiator with your customers. Verifiable, documented, and audited.

TRANSITION_03
Water-based barrier coating

Cost premium vs PE coating: +15–25%. Makes food cartons curbside recyclable (PE-coated cartons are not). Justified for brands with recyclability commitments who sell in food or personal care categories.

TRANSITION_04
Soy-based inks

Cost premium vs petroleum inks: ±0–5%. At CustomBoxesLabs, soy-based inks are available across all formats at no premium — specify in your quote request.

TRANSITION_05
Natural kraft boxes

Cost vs white-liner corrugated: ±0–10%. Often cheaper due to reduced liner processing. No meaningful cost premium. Strongest consumer-facing sustainability visual signal available at no additional cost.

TRANSITION_06
Compostable pouches

Cost premium vs conventional flexible film: +30–80%. The most expensive sustainable packaging transition. Justified only when your product genuinely requires flexible film packaging and your customers have documented access to industrial composting infrastructure.

The recommended transition sequence for most brands
Step 1: Switch to recycled-content corrugated (cost neutral). Step 2: Add soy inks (no premium). Step 3: Add FSC certification if your channel or customers require it. Step 4: Evaluate water-based barrier coating if you sell food and have a recyclability commitment. Only then consider compostable options where genuinely justified. Full guide: Eco-Friendly Packaging Guide — How to Switch Without Hurting Margins.
// SPECIFICATIONS

Eco packaging specifications

FormatSustainability credentialRecyclable?FSC available?Min. order
Natural kraft mailer boxUnbleached fibre · low-chemical process Curbside1 unit
Recycled-content mailer box60–80% post-consumer recycled fibre Curbside Recycled1 unit
Recycled corrugated shipping boxRecycled medium + liner · ECT maintained Curbside1 unit
SBS folding carton (no coating)Uncoated virgin SBS · curbside recyclable Curbside1 unit
Food carton (water-based barrier)Recyclable alternative to PE-coated Curbside1 unit
FSC-certified rigid boxFSC 100% greyboard + wrap paper Paper stream 100%1 unit
Compostable flexible pouchEN 13432 / ASTM D6400 certifiedNo — industrial compost onlyN/AContact us
// CLAIMS GUIDE

Which sustainability claims are legally defensible

Regulators in the USA (FTC Green Guides), UK (CMA Green Claims Code), and EU (Green Claims Directive) are actively enforcing against unqualified sustainability claims. Use specific, verifiable language.

✓ LEGALLY DEFENSIBLE
Specific, verifiable claims

"Made from FSC-certified paperboard" · "80% post-consumer recycled content" · "Curbside recyclable" · "Printed with soy-based inks" · "EN 13432 certified compostable in industrial composting conditions within 180 days." These are specific, documentable, and compliant with current regulatory guidance in all major markets.

⚠ USE WITH QUALIFICATION
Claims needing context

"Compostable" — only without qualification if home compostable. Industrial compost only must say so. · "Biodegradable" — must specify conditions and timeframe. · "Recyclable" — only where accepted in curbside programmes in the markets you sell in. · "Carbon neutral" — requires third-party certification, not a self-declaration.

✗ LEGALLY PROBLEMATIC
Claims to avoid entirely

"Eco-friendly" (unspecified) · "Environmentally friendly" · "Green" · "Sustainable" without qualification · "Natural" applied to packaging materials without meaning · "Biodegradable" without conditions and timeframe. These are the claims most likely to attract regulatory attention and consumer complaints under current and emerging legislation.

We provide documentation for every sustainability claim.
All FSC-certified orders include chain-of-custody documentation. Recycled content orders include supplier certifications. Ink specifications are available on request. If you need to make a specific sustainability claim on your packaging, include it in your quote request and we will confirm the correct spec and provide the documentation to support it.
// FAQ

Frequently Asked Questions

Questions about sustainable packaging options, certifications, and claims at CustomBoxesLabs.

Get an Eco Packaging Quote
Sustainable packaging achieves environmental benefit through specific, documented means: FSC-certified fibre sourcing, recycled content, curbside recyclability, low-VOC inks, or reduced material use. Generic "eco-friendly" labels without specific credentials are not legally defensible under FTC Green Guides (USA) or EU Green Claims Directive. Every sustainability option at CustomBoxesLabs comes with documentation.
Natural kraft uses fewer chemical processing steps than bleached white liner — the kraft pulping process retains more natural lignin, reducing the bleaching stage. Both are curbside recyclable. The structural and recyclability difference is marginal in practice. The more commercially relevant factor is that the brown kraft material visually communicates natural and sustainable positioning before any copy is read.
FSC (Forest Stewardship Council) certification verifies that the fibre in your packaging originated from forests managed to FSC's environmental, social, and economic standards. It verifies responsible forest management and documented chain of custody. It does not verify recyclability or recycled content. FSC 100%, FSC Mix, and FSC Recycled label types are available. See: FSC-Certified Packaging Explained.
Recyclable: accepted through existing curbside infrastructure. All paper-based packaging at CustomBoxesLabs is curbside recyclable. Compostable: breaks down under composting conditions — most certified compostable packaging requires industrial composting at 55–60°C, not home composting. Biodegradable: the least specific term — almost everything eventually biodegrades. Without specifying conditions and timeframe, "biodegradable" is not a legally defensible claim. Full guide: Recyclable vs Compostable vs Biodegradable.
It depends on the transition. Recycled-content corrugated is often cost-neutral or cheaper than virgin corrugated. Soy-based inks add ±0–5%. Natural kraft is equivalent to white-liner pricing. FSC certification adds 5–15%. Water-based barrier coatings (replacing PE on food cartons) add 15–25%. Compostable flexible film adds 30–80%. The cost-neutral transitions — recycled corrugated, soy inks, kraft — should be the first step for most brands. See: Full guide on sustainable packaging costs.
Yes. All sustainable packaging options at CustomBoxesLabs — natural kraft boxes, FSC-certified substrates, recycled-content corrugated, soy-based inks, and compostable pouches — are available with no minimum order quantity and no setup fees. Order a single prototype to validate your dimensions and material specification before committing to any production run.
// READY TO INITIATE?

Engineer your sustainable packaging
with verifiable credentials.

48-hour quote. FSC documentation included. Soy inks at no premium. No minimum. No setup fees.

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