Injection Mold & Tooling Die Flat Poly Bags — 20x30 in., 6 mil
Extra-heavy 20x30 in. flat poly bags in 6 mil virgin LDPE for injection mold storage, tooling die protection, and heavy industrial component bagging. The 6 mil gauge provides maximum resistance to puncture, abrasion, and moisture intrusion — appropriate for the demanding storage requirements of precision tooling, dies, and molds that must remain rust-free and undamaged between production runs.
Specs: 20x30 in. | 6 mil | Virgin LDPE | 200/Box | FDA/USDA Compliant
Applications
Used by injection molding shops, stamping plants, and precision machining operations for mold and die storage. The heavy 6 mil wall provides moisture and contaminant exclusion to protect polished mold cavities from surface rust during downtime. Also applied for bagging large hydraulic components, heavy castings, forged parts, and other industrial goods that require the highest available flat poly bag gauge for puncture resistance.
Features
- 6 mil extra-heavy LDPE wall — maximum moisture barrier and puncture resistance for precision tooling
- 20x30 in. format accommodates most medium-size injection molds, die sections, and heavy flat components
- Open-end design compatible with heat seal, tape, staple, or tie closure
- High-clarity virgin LDPE for part identification through the bag
- FDA/USDA compliant resin; 200 bags per box
Material Notes
Manufactured from 100% virgin Low Density Polyethylene (LDPE) resin at 6 mil nominal gauge. LDPE provides both moisture barrier performance and flexibility at heavy gauge, conforming to complex mold and die geometries without cracking or stiffening. For long-term rust protection, pairing with desiccant packs or VCI paper inside the bag is recommended. All gauges are nominal.
Use Case Notes
The 20x30 in. format accommodates mold halves, die sections, and component inserts up to approximately 19x29 in. Molding shops commonly use individual bags per mold half, sealed with tape or heat seal, with part identification written on the bag or on a label insert. The 200/box pack supports moderate-volume tooling storage operations without frequent reordering.
Common Questions
Q: Will a 6 mil bag protect mold cavities from rust?
A: A sealed 6 mil LDPE bag significantly reduces moisture exposure, which is the primary cause of rust on polished steel tooling. For extended storage, combining with a desiccant pack or VCI (volatile corrosion inhibitor) material inside the bag provides additional protection.
Q: Are these FDA/USDA compliant?
A: Yes. Virgin LDPE resin meets FDA/USDA specifications, suitable for both industrial and food-adjacent applications.
Q: How are they sold?
A: 200 bags per box. Box pricing applies for industrial and wholesale procurement.
Why Buy
These 20x30 flat poly bags deliver 6 mil LDPE at the maximum standard gauge for injection mold, tooling die, and heavy industrial parts protection. A dependable choice for keeping precision tooling rust-free and undamaged between production cycles. 200/box at bulk pricing.
