12x20 Heavy Duty Flat Poly Bags - 4 Mil Industrial Packaging by LK Packaging
These 12x20 flat poly bags deliver serious puncture resistance at 4 mil thickness—the heavy-duty choice for industrial parts, tools, and equipment that demand reliable protection. Made from virgin LDPE by LK Packaging, these bags combine exceptional durability with FDA-compliant materials, giving you versatility across manufacturing, warehouse, and commercial operations.
Product Specifications
- Dimensions: 12" x 20" flat (lay-flat design)
- Thickness: 4 mil (0.004" / 100 micron) - Heavy Duty
- Material: Low Density Polyethylene (LDPE)
- Quantity: 500 bags per case
- Construction: Seamless tubing with heat-sealed bottom
- Compliance: FDA compliant for food contact applications
- Manufacturer: LK Packaging (Elkay Plastics)
Applications
The 4 mil thickness makes these bags ideal for demanding industrial and commercial applications. Automotive shops and manufacturers use them for protecting machined parts, engine components, and assemblies during storage and shipping. Industrial facilities rely on this gauge for sharp-edged metal parts, tools, and hardware kits that would puncture lighter bags. The 12x20 footprint accommodates larger flat items—circuit boards, control panels, metal plates, and oversized hardware. Warehouse operations stock these for heavy inventory protection, while machine shops use them for finished parts awaiting shipment or assembly.
Key Features
- Puncture Resistant: 4 mil thickness withstands sharp edges, pointed parts, and rough handling without tearing
- Seamless Construction: Made from seamless tubing with no side seams that can split under stress
- Virgin LDPE: Clean, consistent material ensures reliable performance and FDA compliance
- Flexible Yet Strong: LDPE maintains flexibility while providing superior impact resistance compared to HDPE
- Clear Material: Easy visual identification of contents without opening
Thickness Guide
At 4 mil, these bags sit at the heavy-duty end of the poly bag spectrum. For reference: 1-1.5 mil suits dust covers and light protection; 2 mil handles general-purpose packaging; 3 mil works for moderately heavy items; 4 mil provides industrial-grade protection for sharp, heavy, or abrasive contents. Choose 4 mil when standard bags fail or when contents could damage lighter materials.
Why Choose Prism Pak
Prism Pak stocks LK Packaging industrial poly bags at wholesale pricing with fast shipping from our Pennsylvania warehouse. We supply manufacturers, machine shops, and commercial operations with the heavy-duty packaging they need to protect valuable parts and products.
