LDPE
Cryogenic Deflashing & Deburring for LDPE Parts
Gate vestige and parting-line flash on molded LDPE are hard to trim by hand without distorting a soft, flexible wall. Nitrofreeze removes them without touching the part.
Can LDPE parts be cryogenically deflashed?
Yes — Nitrofreeze cryogenically deflashes and deburrs injection-molded LDPE (low-density polyethylene) parts at its Worcester, Massachusetts facility, including flexible, thin-walled components that are easily distorted by hand trimming. LDPE is one of the molded plastics Nitrofreeze processes for packaging and industrial customers.
Will deflashing affect tolerances or surface finish?
No. The Nitrofreeze process does not affect surface finish, geometry, or the material itself. Parts are cooled until the flash turns brittle and tumbled with polycarbonate media that breaks it at its thin root, leaving molded surfaces and dimensions unchanged. Only the flash comes off.
What about gate vestige, cross-holes and thin walls?
Gate vestige and parting-line flash are what LDPE molders send to Nitrofreeze most often, along with flash in cross-holes and blind holes that hand tools cannot reach without nicking a soft wall. The media travels through the part, so internal edges, intersecting bores and thin-walled features are deflashed in the same cycle as the outside of the part.
What LDPE parts does this work for?
Nitrofreeze deflashes LDPE packaging components, tubing, seals, containers and molded components for packaging, medical, consumer and industrial customers. Both injection-molded parts carrying mold flash and machined LDPE parts carrying burrs are processed.
How small — and how large — can parts be?
Nitrofreeze processes parts from 0.025″ with thin walls up to 12″ × 12″ in its cryogenic machines — and there is no upper limit on part size: larger LDPE parts route to dry ice deflashing or hand finishing. There is no minimum order quantity; runs are subject to a $125 minimum lot charge.
What’s the turnaround and typical cost?
The first run of a new LDPE part is treated as a sample: five-day turnaround, free, as Nitrofreeze’s Pre-Production Engineering Evaluation. Once the customer approves the process, production orders turn around in as little as two days after receipt, with same-day and one-day service available for a small premium. Large volume orders typically require more time to process. Deflashing typically runs 10–20% of the value of the part.
Is Nitrofreeze ITAR registered and ISO certified?
Yes. Nitrofreeze is registered with the U.S. Department of State’s Directorate of Defense Trade Controls (DDTC) as a manufacturer/exporter under the International Traffic in Arms Regulations (ITAR), and is certified to ISO 9001:2015 by NQA with a scope that names cryogenic deburring and deflashing. View the ISO certificate.
Send us your LDPE parts
The first run is a free Pre-Production Engineering Evaluation — five days, no obligation, with the process documented before you commit.
Nitrofreeze Cryogenic Solutions · 78 Chilmark Street, Worcester, MA 01604