Construction bag

Valve Kraft Paper Bags for Construction - 50kg Recyclable Heat Seal Bags for Gypsum & Mortar

Industrial-Grade Construction Protection  

A valve port heat sealed kraft paper bag designed specifically for 50kg building materials products. Suitable for putty powder, tile adhesive, gypsum, mortar, and cement. Provide excellent moisture resistance and recyclable environmentally friendly solutions. Support customized printing, factory direct supply. Get a quote now!

Key Features:  

• Multi-Purpose: Ideal packaging for putty powder, tile adhesive, gypsum, mortar, and cement bags.

• Advanced Seal: Heat seal technology and valve design for a dust-tight closure and easy filling.

• Eco-Friendly: Made from recyclable and strong kraft paper for industrial use.

• Standard Size: Reliable 50kg capacity bag for 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: 150-200gsm woven PP + 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.