Construction bag

Kraft Paper Bags with Internal Valve - 20kg 25kg 50kg Recyclable Packaging for Mortar & Cement

Industrial-Grade Construction Protection  

A kraft paper packaging bag designed specifically for 20kg, 25kg, and 50kg cement and mortar. Provide dust-proof filling, recyclable and environmentally friendly solutions to ensure transportation safety and product cleanliness. Suitable for various dry powder building materials. Get samples and competitive factory prices!

Key Features:  

• Dust-Free Filling: Internal valve design for clean, dust-proof filling of cement and mortar.

• Eco-Friendly Material: Made from recyclable and durable kraft paper.

• Standard Sizes: Reliable 20kg, 25kg, 50kg bags for industrial packaging.

• Professional Use: Ideal kraft paper bag for dry mix construction materials.

Critical Applications:  

- Composite Manufacturing (Fiberglass, carbon fiber prepregs)  

- Adhesive Production (Epoxy, polyurethane packaging)  

- Construction Sites (Concrete repair resin storage)  

- Marine & Aerospace (Specialty resin transport)  

Technical Specs:  

→ Material: 70-100gsm Kraft paper + 50μm PE lamination  

→ Temperature range: -30°C to 80°C  

→ Closure types: Ziplock, heat-seal, or valve

Product Detial

Material：Kraft paper laminate pp woven,Bopp film, bopp pp woven, woven polypropylene, woven pp

Dimension size：25cm to 200cm, 30cm, 40cm, 48cm, 50cm, 60cm, 65cm, 75cm, 200cm

Loading capacity：2kg, 5kg, 10kg, 20kg, 25kg, 50kg,
20LB 25LB 30LB 35LB 40LB 45LB 50LB 55LB 60LB

Material thickness：50gsm, 60gsm,70gsm, 80gsm, 90gsm, 100gsm, 110gsm, 120gsm, 150gsm, 180gsm

Characteristic：waterproof, moisture proof, new strong sack bag,
cost effective, economical, automatic production, high strength

Logo artwork printing：Offset printing, flexo printing, gravure, UV, CMYK

Color：Red,white,blue,Green,black,yellow,1-9 colors

Bag Top：Big full open, valve bag, fold, easy strip 

Bag Bottom：Block bottom,flat bottom, pasted, stitch, single folded, single stitch, double stitch, hot seal, heat seal

Liner: LDPE, HDPE, PP liner, PE lining

Usage：

Package charcoal, flour, feed, animal food chemical, resin, fertilizer,
sugar, food

Features Selection：

1. Waterproof, moisture proof.
2. Automatic production, high strength and heavy loading capacity.
3. Recyclable, recycled, economical.
4. Nice beautiful full page printing.