Introduce the Block Bottom Valve Bag, affectionately referred to as the Ad Star® bag – a groundbreaking, patented packaging solution that exceeds expectations. Crafted from woven polypropylene (WPP) fabric, this bag boasts a block-bottom design, meticulously sealed with hot air welding, obviating the need for adhesives. It rises above its competitors with outstanding durability, flexibility, and an eco-friendly ethos, offering you a cost-effective solution that doesn't compromise on quality.
Its impressive strength is matched only by its resilience to water damage, ability to withstand extreme weather conditions, tolerance for rough handling, and resistance to tearing.We provide durable cement bags, wall putty bags and other construction material bags. Adding to its appeal, the variable permeability ensures versatility, while its recyclable and reusable nature is ideal for efficient pallet storage of brick-shaped packaging bags.
The Ad*Star® Bag, patented globally by Starlinger, is crafted with care exclusively on Starlinger machines. We are proud to say that we have been the leading Ad*Star Bag manufacturer since 2009 right here in China.

Embrace Multi-Purpose Convenience With Just One Bag
Block bottom bags have flat bottom for hassle -free filling and stacking for a wide range of free-flowing bulk materials, such as cement, building materials, fertilizers, chemical products, and granular substances, are also suitable for flour, sugar, and animal feed.

Experience The Ultimate In Customization And Ingenious Packaging
BOPP Laminated block bottom bag is BOPP Laminated fabric that makes into block bottom bag. Block bottom bag with BOPP laminated fabric will be more durable and fancy since BOPP film on the fabric is an extra protection. Besides, it supports customer design on bottom, top and sides because of the structure of bag, increasing recognition for bags stacked on shelves or pallets.

Elevates The Value Of Your Brand With A Gentle Touch
Not only is it incredibly robust and highly resistant to harsh weather conditions, but it also allows for vibrant full-color printing and features transparent windows to beautifully display the products inside. When it comes to burst resistance, it outperforms all comparable products on the market, offering versatility and economy in one package.


Explore Efficient Industrial Packaging Methods To Make Your Work Easier
When you are using the Ad Star block bottom valve bag, once the bag's being filled with products, the automated closure mechanism is activated, effectuating a seamless seal in response to the applied pressure. The block bottom bag has a self -closing filling valve , a seal-able valve or a pocket valve , which contributes to a super efficient filling process and the neat rectangular shape and covering top patch over the valve makes this bag remarkable for your brand.

Block bottom bags are neatly folded at the edges and heat sealed at the top and the bottom. The top position of the bag can be equipped with a valve structure for hassle-free automatic filling, making these bags ideally suitable for streamlined packaging needs in industries like cement, animal feed, chemicals, and fertilizers.
Discover the various industries where our products are applied and how they make a difference.
| Material | 100% Virgin Polypropylene ( PP ) |
| Fabric color | White / Transparent/ Color |
| Printing | Flexo or Rotogravure |
| Width | 35cm to 60cm |
| Length | 50cm to 90cm |
| Mesh | 8*8 /9*9 /10*10/12*12 |
| Denier | From 600D to 1500D |
| Weight | 50gsm-120gsm |
| Top | valve spout |
| Bottom | square bottom |
| Characteristics | moisture-proof, tightness, highly tensile,tear resistant |
| Optional choice | inner coated, side gusseted,back seam |
| Perforation | microSTAR perforation |
| Printing color | 1-8 colors |
| Certificate | BRC ISO9100 |
| Appearance | glossy/matt lamination, UV stabilization , anti skid, anti-slip |

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