Kraft Paper-Poly Bags

Medium Duty Kraft Paper/Poly Bags per MIL-DTL-117: Overview, Benefits & Applications

Medium Duty Kraft Paper/Poly Bags, manufactured to MIL-DTL-117 specifications, are an essential part of military and industrial packaging solutions. These high-performance bags offer reliable protection for a wide variety of components, parts, and materials during storage and shipment, particularly in moderate-duty environments.

Whether you're working with metal parts, electronics, or general hardware, MIL-DTL-117 compliant bags provide the durability, moisture resistance, and ease of use required for dependable packaging.

What Is MIL-DTL-117?

MIL-DTL-117 (formerly MIL-B-117) is a military detail specification that governs the requirements for heat-sealable barrier bags, including those made from kraft paper laminated with polyethylene or other protective layers.

Under this specification, packaging materials are categorized by type, class, and style, based on construction and performance. Medium duty kraft/poly bags typically fall under:

  • Type I – Heat-sealable, multiple-layer barrier material

  • Class E or F – Kraft paper/polyethylene laminates

  • Styles – Vary by thickness, liner composition, and moisture resistance

Features of Medium Duty Kraft/Poly Bags

These MIL-DTL-117 compliant bags combine the toughness of natural kraft paper with the protective barrier of polyethylene (PE), offering balanced strength and flexibility.

Key Features:

  • Tear and puncture resistance

  • Moderate moisture barrier

  • Heat-sealable for secure closure

  • Lightweight and cost-effective

  • Customizable sizes and styles available

Common Uses and Applications

1. Packaging of Metal Parts and Hardware

Kraft/poly bags are ideal for storing and shipping nuts, bolts, fasteners, and fabricated parts that require moderate protection from handling and humidity.

2. Industrial and Aerospace Components

These bags are widely used in aerospace, defense, and manufacturing industries for intermediate packaging of non-electronic parts.

3. Government and Military Supply Chains

Used extensively for military logistics, these bags ensure compliance with government contract requirements for packaging and preservation.

4. Tool and Maintenance Kit Packaging

Tool sets and maintenance kits benefit from the rugged construction of kraft/poly bags, ensuring that contents are kept intact and dry in various field environments.

5. Kitting and Component Grouping

Perfect for unit packs, these bags help organize parts or materials for assembly lines, field operations, or shipment kits.

How to Use MIL-DTL-117 Kraft/Poly Bags

  1. Place the item(s) inside the bag.

  2. Add desiccant or corrosion inhibitors if needed.

  3. Seal the bag using a heat sealer to ensure a tamper-resistant, moisture-protected closure.

  4. Label and mark according to MIL-STD-129 or project-specific packaging requirements.

Buying Guide: Selecting the Right Style

When sourcing MIL-DTL-117 kraft/poly bags, consider:

  • Product weight and handling

  • Environmental exposure

  • Storage duration

  • Contractual or compliance requirements

At Arms Preservation Inc., we offer a wide selection of mil-spec packaging solutions, including MIL-DTL-117 kraft/poly bags in various styles and thicknesses. Custom options and bulk orders are available for both commercial and government clients.