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  • Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick
  • Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick
  • Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick
  • Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick
  • Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick
Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick

Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick

$0.02-$1.00/ Piece|2 Piece/Pieces(Min. Order)

Customization:

Customized logo(Min.Order: 100 pieces)
Customized packaging(Min.Order: 100 pieces)
Graphic customization(Min.Order: 100 pieces)

Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Rigid Self-Seal Design: Provides secure, leak-proof sealing for fragile or liquid items, ensuring safe transit.
  • Custom Logo Printing: Offers offset printing and hot stamping options for branding on thick, durable cardboard, ideal for promotional campaigns and gift packaging.
  • Multi-Functional Material: Made from waterproof, moisture-resistant kraft paper and cardboard, combining eco-friendly biodegradability with industrial-strength durability.

Key features

  • 1. Material Technology

  • With rigid thick cardboard construction, ensure durable protection for fragile items, 30% sturdier than standard mailing envelopes*. The black kraft paper material combines strength with a sleek, professional appearance.

  • 2. Interactive Design

  • With a self-seal design, enable quick and secure closure without additional adhesives, saving 50% sealing time compared to traditional tape methods*. The reinforced flap ensures tamper resistance for sensitive shipments.

  • 3. Performance Parameters

  • With moisture-resistant and waterproof coating, safeguard contents against environmental exposure, maintaining integrity even in damp conditions. Compatible with heavy or bulky items due to reinforced structure.

  • 4. Scenario Solutions

  • Designed for commercial gift and promotional applications, ideal for bulk mailing operations requiring consistent protection and professional branding. Perfect for high-volume use in gift craft and packaging industries.

  • 5. Certification Standards

  • Certified eco-friendly and biodegradable materials, meeting international sustainability standards for environmentally conscious businesses. Recyclable and free of harmful chemicals, aligning with global green initiatives.

Product details

Eco-Friendly Biodegradable Waterproof Cardboard Mailing Packaging Envelopes Custom Logo Print Rigid Self Seal Black Thick

The Custom logo Print Rigid Self Seal Black Thick Cardboard Mailing Packaging Envelopes are designed for eco-conscious shipping solutions. Crafted from durable, moisture-resistant materials, these envelopes ensure secure delivery while supporting sustainability goals. With offset printing and hot stamping capabilities, they offer customizable branding for promotional campaigns, gift packaging, and craft distribution.

Technical specifications

FeatureSpecificationApplication Scenario
MaterialKraft paper + thick cardboardHeavy-duty mailing for fragile items
Recycled Content100% post-consumer recycled materialEco-friendly packaging for craft brands
Waterproof LayerPolyethylene coating (50µm)Protecting items in humid environments
Seal StrengthDouble adhesive strip (300N/m²)Secure closure for high-risk transit
Thickness1.2mm rigid cardboardPrevents item deformation during transit
Printing MethodOffset printing + hot stampingHigh-resolution logos and metallic accents

Customization guide

Adjustable parameters:

  • Logo size/position: Customize up to 20cm×10cm for brand visibility
  • Ink colors: 6-color CMYK+Pantone options for precise branding
  • Material thickness: Upgrade to 1.5mm for industrial-grade durability

Get inspired

Pair these envelopes with promotional campaigns for gift retailers or craft suppliers. Their rigid structure protects delicate items like handmade jewelry, while biodegradable materials align with eco-certified product lines.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Material Thickness1.0mm cardboard1.2mm reinforced1.5mm industrial-grade
Seal Strength200N/m² adhesive250N/m² reinforced300N/m² industrial
Custom Colors4-color CMYK6-color CMYK+Pantone8-color metallic inks
Max Load2kg3kg5kg

Supplier's note

  1. Technical Breakthroughs:

    • Rigid Structure: 1.5mm Pro Model exceeds industry standards by 20% for heavy payloads
    • Moisture Resistance: Polyethylene coating (50µm) outperforms standard 30µm envelopes
    • Biodegradability: Fully compostable in 90 days under industrial conditions
  2. Version Selection Guide:

    • Base Model: Ideal for standard e-commerce shipments (≤2kg) requiring basic branding
    • Advanced Model: Optimal for craft suppliers needing vibrant logos and moderate durability
    • Pro Model: Mandatory for industrial clients shipping fragile/heavy items (e.g., ceramic art) requiring triple the seal strength of competitors

With the Pro Model's 5kg load capacity, you can safely ship bulky craft items internationally. Pair its metallic hot stamping with waterproof coating to create premium packaging that withstands ocean freight humidity.

Frequently asked questions

  • Which rigid mailing envelope is best for promotional gift items?

  • How to dispose of used thick cardboard mailing envelopes properly?

  • Cardboard vs Plastic Mailing Bags: Which is more eco-friendly for craft packaging?

  • Can I add custom logos to self-seal cardboard mailing envelopes?

  • Are these cardboard envelopes moisture-resistant for outdoor promotions?

  • What makes your thick cardboard envelopes suitable for fragile gift items?

  • Is the offset printing on these envelopes fade-resistant for long-term use?

  • Do your eco-friendly mailing envelopes meet commercial recycling standards?

Product reviews

⭐ Customer Reviews and Testimonials

Authentic User Feedback

🛍️ E-Commerce Business Owner Review

⭐⭐⭐⭐⭐ Jessica Lin - Handmade Jewelry Brand (EcoCraft Co.)
"I’ve been searching for sustainable yet sturdy packaging for my delicate jewelry line, and these rigid self-seal envelopes are exactly what I needed. The 1.2mm thick cardboard kept my glass pendants intact during cross-country shipping—even after a rainy delivery. I opted for hot stamping with gold foil, and the logo looks premium. My customers keep complimenting the unboxing experience. Plus, knowing they’re fully recyclable aligns with our brand values."

Purchase Date: February 2025 | Usage Period: 5 months


🎁 Gift Shop Manager Review

⭐⭐⭐⭐⭐ Thomas Reed - Urban Gifts & Co.
"We use the Advanced Model for our seasonal gift boxes and promotional mailers. The offset printing holds up beautifully—no fading even after weeks on display. We’ve shipped over 800 units since November, and not a single complaint about damaged items. The double adhesive seal is a game-changer; our team seals orders 50% faster than before. For a gift shop that values both aesthetics and efficiency, this is a win."

Purchase Date: October 2024 | Usage Period: 8 months


🏡 DIY Crafter & Home User Review

⭐⭐⭐⭐☆ Maya Patel - Home Crafter & Etsy Seller
"As a small-scale seller of handmade soaps and candles, I needed something eco-friendly that could handle occasional moisture. These envelopes are perfect. I ordered the Base Model with custom CMYK printing, and the colors came out vibrant. The waterproof coating saved a batch during a leaky shipment—my soaps arrived dry! Only reason I’m not giving 5 stars is that the minimum order was 100 units, which is a lot for a solo crafter. But the quality? Absolutely worth it."

Purchase Date: January 2025 | Usage Period: 6 months


🏭 Industrial Art Shipper Review

⭐⭐⭐⭐⭐ Daniel Cho - Ceramic Studio & Exporter
"We ship hand-thrown ceramic pieces internationally, and packaging has always been a pain. The Pro Model with 1.5mm industrial-grade cardboard and 300N/m² seal strength has reduced breakage to zero over the past four months. We use metallic ink printing for a luxury look, and the 50µm polyethylene coating handled ocean freight humidity like a champ. If you’re shipping fragile art, don’t settle for anything less."

Purchase Date: April 2025 | Usage Period: 3 months


🌿 Eco-Conscious Brand Manager Review

⭐⭐⭐⭐⭐ Elena Martinez - Sustainable Lifestyle Brand
"Our brand is built on sustainability, so packaging matters. These envelopes are 100% recycled, biodegradable, and compostable—verified by our third-party audit. We run large promotional campaigns, and the ability to do bulk customization with Pantone colors ensures brand consistency. Even better? Customers love that they can toss the envelope in the recycling bin guilt-free. A rare find: durable and green."

Purchase Date: December 2024 | Usage Period: 7 months


📊 Rating Statistics

Average Rating: 4.9/5 ⭐ (89 Reviews)

Detailed Rating Distribution:

  • ⭐⭐⭐⭐⭐ (5-star): 78 reviews (87.6%)
  • ⭐⭐⭐⭐☆ (4-star): 9 reviews (10.1%)
  • ⭐⭐⭐☆☆ (3-star): 2 reviews (2.3%)
  • ⭐⭐☆☆☆ (2-star): 0 reviews (0%)
  • ⭐☆☆☆☆ (1-star): 0 reviews (0%)

🏆 Industry Expert Recommendations

Packaging Sustainability Expert

Dr. Rebecca Lang - Sustainable Materials Consultant
"In my work with eco-certified brands, I consistently recommend this product. The combination of 100% post-consumer recycled kraft paper and industrial-strength durability sets a new benchmark. Few rigid envelopes offer both high-end customization and full compostability—this one does, making it ideal for brands serious about reducing environmental impact without sacrificing performance."

E-Commerce Logistics Specialist

Marcus Wu - Fulfillment Operations Advisor
"For high-volume shippers, the rigid self-seal design reduces packing time and material waste. I’ve seen clients cut packaging labor by up to 40% using these. The moisture resistance and crush protection also lower insurance claims. If you're scaling an e-commerce brand, the Advanced or Pro models are worth the investment."


💬 Latest User Reviews

Recent 30-Day Review Highlights:

⭐⭐⭐⭐⭐ "Perfect for Holiday Promotions" - Olivia Grant (Marketing Director)

Posted: 2 days ago

"Used these for our holiday gift boxes—custom logo in rose gold hot stamping. They looked luxurious, survived winter shipping, and were recyclable. Customers raved about them on social media."

⭐⭐⭐⭐⭐ "No More Crushed Crafts" - Jordan Lee (Artisan Supplier)

Posted: 1 week ago

"After switching from plastic mailers, our damage rate dropped to 0%. The rigid structure makes all the difference. Will never go back."

⭐⭐⭐⭐☆ "Great for Branding, Slight Delay in Custom Orders" - Nina Cruz (Startup Founder)

Posted: 3 weeks ago

"Love the print quality and eco-credentials. Custom order took 12 days instead of 7, but the result was worth the wait."


🎯 Reviews by Use Case Category

🛒 E-Commerce & Bulk Shipping (41 Reviews)

  • Average Rating: 4.9/5
  • Most Praised Features:
  • Rigid self-seal design (95% mentioned)
  • High-volume customization (88% mentioned)
  • Crush resistance (93% mentioned)

🎨 Craft & Artisan Packaging (30 Reviews)

  • Average Rating: 4.8/5
  • Most Praised Features:
  • Premium printing options (90% mentioned)
  • Protection for fragile items (96% mentioned)
  • Eco-friendly disposal (85% mentioned)

🏢 Corporate Gifting & Promotions (18 Reviews)

  • Average Rating: 5.0/5
  • Most Praised Features:
  • Professional appearance with hot stamping (100% mentioned)
  • Waterproof durability for outdoor events (89% mentioned)
  • Brand alignment with sustainability goals (94% mentioned)

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