When it comes to choosing a reusable bag for demanding sectors like supermarkets, department stores, or promotional campaigns, the key is finding a product that combines durability, functionality, and sustainability. In this article, I’ll share from my own experience why the double-laminated, heat-sealed bag has become the perfect solution for our most demanding clients.

What is a double-laminated heat-sealed bag?
A double-laminated, heat-sealed bag is one that has been heat-sealed at its seams (without thread stitching) and incorporates a laminated layer on both the inside and outside. This double layer provides unique characteristics such as complete waterproofing, increased durability, and superior structural strength.
At Diseños NT, we customize bags to your specifications, which is why we offer the option of adding a transparent and waterproof laminate to the inside of the bag, as well as to the outside, providing the following features: additional interior protection, waterproofing, resistance to moisture and vapor, easy cleaning, greater durability and structural strength.
Advantages of heat sealing and double lamination
- Waterproofing: perfect for protecting contents in humid environments or where there is a risk of spills.
- Longer lifespan: thanks to the lamination, the bag can be reused more than 100 times without deterioration.
- Structural strength: supports up to 15 kg of weight without compromising the shape or the seal.
- Easy maintenance: can be easily cleaned with a damp cloth.
- Professional and premium appearance: ideal for marketing campaigns and corporate packaging.
Thanks to its double lamination, you can reuse this bag many times, as it is much more durable. It’s easy to clean and reuse.


Sustainable materials and environmental commitment
One of the cornerstones of our work is ensuring that the final product has a low environmental impact. That’s why our double-laminated, heat-sealed bag is designed to be reusable, recyclable, and manufactured responsibly.
We manufacture a final product using 40% recycled raw materials. We recycle 100% recyclable packaging, achieving zero waste.
Our bags emit 23% less CO₂ than imported bags, and our raw materials reduce CO₂ emissions by 39%. All of this is possible thanks to integrated, customer-tailored manufacturing: we control every stage of the production chain, from raw material production to printing and final product manufacturing.
Furthermore, we use renewable energy in our manufacturing. Thanks to our close relationships with suppliers and customers, we follow a local production model KM0 that minimizes our carbon footprint.
Complete customization for each client
Design isn’t limited to just materials. We offer complete customization tailored to every need. From bag size to printing, lamination, and finishing, every detail is adapted to the end use.
Customization tailored to your needs: Full Print with environmentally friendly inks, flexibility and adaptability, and interior color lamination.
This versatility makes our bags a perfect support for both product transport and promotional activities.
Designed for supermarkets, department stores and advertising
One of the biggest advantages of the double-laminated heat-sealed bag is its ability to adapt to different sectors:
Supermarkets and hypermarkets
These bags are designed for all customers who need a bag with these characteristics, but they are primarily aimed at supermarkets and large retail stores. They are characterized mainly by their high resistance, capable of supporting up to 15 kg and with a lifespan of over 100 uses. Two essential features for supermarkets and large retail stores.
Advertising and promotion
Promotional bags combine practicality and functionality, perfect for promotional campaigns aimed at achieving greater visual impact on your customers. Furthermore, these advertising and promotional bags are reusable, allowing for multiple uses throughout their lifespan.


Responsible production: beyond the sale
What sets us apart is that our commitment continues even after the delivery of new products. Our goal is not just to sell bags, but to promote a conscious and circular use of resources.
Reuse, easily clean and recycle used bags to contribute to a cleaner world.
Why choose heat-sealed bags with double lamination?
This type of bag represents a comprehensive solution for companies seeking to align their brand values with sustainable practices, without sacrificing durability or aesthetics.
By integrating heat-sealing technology, waterproof laminates, recycled materials, and clean energy, we achieve a final product that meets all current and future market standards.
In a context where responsible consumption and the circular economy are becoming the norm, this bag is a safe bet for conscious brands.

An investment that strengthens your brand image
Investing in double-laminated, heat-sealed bags is not only a practical and eco-friendly decision, it also makes a statement to your customers and the market. You’re saying that you care about quality, sustainability, and the user experience.
At Diseños NT, we’ve spent years supporting companies that strive to stand out and evolve towards more conscious production. And we firmly believe that every detail counts, even a bag.
Do you need help choosing the best double-laminated heat-sealed bag for your business?
Get in touch with us and request a quote. We design customized solutions that reflect your commitment to the planet and your customers.