Customization:
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.
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.
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.
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.
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.
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.
Feature | Specification | Application Scenario |
---|---|---|
Material | Kraft paper + thick cardboard | Heavy-duty mailing for fragile items |
Recycled Content | 100% post-consumer recycled material | Eco-friendly packaging for craft brands |
Waterproof Layer | Polyethylene coating (50µm) | Protecting items in humid environments |
Seal Strength | Double adhesive strip (300N/m²) | Secure closure for high-risk transit |
Thickness | 1.2mm rigid cardboard | Prevents item deformation during transit |
Printing Method | Offset printing + hot stamping | High-resolution logos and metallic accents |
Adjustable parameters:
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.
Parameter | Base Model | Advanced Model | Pro Model |
---|---|---|---|
Material Thickness | 1.0mm cardboard | 1.2mm reinforced | 1.5mm industrial-grade |
Seal Strength | 200N/m² adhesive | 250N/m² reinforced | 300N/m² industrial |
Custom Colors | 4-color CMYK | 6-color CMYK+Pantone | 8-color metallic inks |
Max Load | 2kg | 3kg | 5kg |
Technical Breakthroughs:
Version Selection Guide:
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.
⭐⭐⭐⭐⭐ 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
⭐⭐⭐⭐⭐ 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
⭐⭐⭐⭐☆ 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
⭐⭐⭐⭐⭐ 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
⭐⭐⭐⭐⭐ 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
Average Rating: 4.9/5 ⭐ (89 Reviews)
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."
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."
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."
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."
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."
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