Center Seam (Back Seam) Paper Poly Woven Bag

The Center Seam (Back Seam) Paper Poly Woven Bag is the most widely used and commercially important paper-plastic compound bag construction available today. Formed by precision sealing the two edges of the laminated roll at the center back, this construction delivers an exceptionally strong, leak-proof, and visually superior bag. Available in a wide range of layer configurations including 3-layer, 4-layer, 5-layer, and 7-layer builds with kraft paper, PE moisture barrier film, and PP/HDPE woven fabric our center seam bags can be produced with brown or white kraft outer surfaces, custom inner liners, and up to 6-colour print to match your exact branding and performance requirements.

Features & Benefits

Center sealed back seam construction for superior strength and leak resistance

Available in 3-layer, 4-layer, 5-layer, and 7-layer configurations

Brown kraft or white paper outer surface options

Multiple moisture barrier configurations PE liner, paper liner, metallised film

Valve option available for high-speed automated filling lines

Gusset option available for increased bag volume

Flush cut opening for precise, clean filling

Up to 6-colour flexographic printing on kraft paper outer surface

Specifications

Width :
Custom as per requirement

Length :
Custom as per requirement

Top Finish :
Stepped or Flat Top

Number of Layers:
3-layer, 4-layer, 5-layer, 7-layer

Colour printing :
Up to 6-colour flexographic Print

Valve Option :
Available top or bottom position

Loading Capacity :
5 kg – 50 kg

Outer Layer:
Brown kraft / White kraft paper (80–120 GSM)

Moisture Barrier :
PE film laminated between fabric and paper

Inner Layer :
PP/HDPE woven fabric high tenacity

Liner Options :
PE poly liner / Paper liner / Metallised film liner

Material & Finish Options

brown paper poly woven bag with flat bottom

Brown Kraft Outer Layer

Natural brown unbleached kraft paper outer surface for standard industrial applications. Cost-effective, strong, and widely recognised across cement, chemical, and fertilizer industries.

paper poly woven bag in white colour with flat base

White Kraft Outer Layer

Bleached white kraft paper for a clean, premium appearance. Ideal for food, dairy, pharmaceutical, and retail-facing products requiring sharp print presentation.

PE Moisture Barrier Film

Polyethylene film interlayer laminated between the woven fabric and kraft paper the primary moisture and water vapour barrier protecting hygroscopic products during storage and transit.

Paper poly woven bag with Metallized Film Layer

Metallised Film Liner

High-performance metallised film inner liner for products requiring maximum moisture, oxygen, and light barrier ideal for milk powder, specialty agrochemicals, and premium food products.

Paper poly woven bag with PE Inner Liner

Paper Inner Liner

Additional kraft paper inner liner for enhanced product protection, anti-sifting performance, and improved structural rigidity available in plain or perforated variants for cement applications.

Applications

Submit Your Inquiry for Bulk Paper Poly Woven Bags

We specialise in manufacturing and exporting multiwall paper bags, valve sacks, open mouth kraft paper bags, and BOPP laminated industrial packaging solutions for global industries. We supply bulk, custom-printed, and heavy-duty paper sack solutions with worldwide shipping support.