Process window before money

hdpe pellets price

A quoted hdpe pellets price is usable only when the line will actually interface with the equipment already on the floor. This page is a compatibility check, not a market index and not a discount board.

Four gates before an alternative price is accepted

  1. Process match. Film, blow, injection or rotomolding has to be the same duty the tool already runs.
  2. Melt-flow match. MFI / MFR in g/10 min belongs with the test condition. A cheaper bag with a different flow is a different resin.
  3. Feed match. Virgin, PCR or mixed content changes color, odor and food-contact files even when the family name is unchanged.
  4. Document match. The lot COA must cite the ASTM or ISO method the receiving plant asked for.

Equipment interface

Ask the molder or extruder which density and melt-flow the hopper, dryer and screw already hold. We do not guess a barrel window.

Medium and temperature

Finished-part chemistry and service temperature belong on the brief when the pellet will become a wetted part. HDPE is not automatically a chemical tank grade.

Additive package

UV stabilizer, antioxidant, slip and pigment can move a quote and a food-contact file. Write them as limits, not as optional color talk.

Lot documents decide compatibility

A plant ISO poster does not stand in for the quoted bag. Ask for the current file that names the grade and the lot. Food-contact, drinking-water or automotive files have to name those same items.

REACHSVHC statement for the quoted lot
RoHSOnly if the receiving plant asked
FDA 21 CFR 177Grade-named food-contact file
ISO 9001Plant system, not a pellet rating
ASTM density / MFIMethod and condition on the COA
UL 94Only when the part drawing requires flame rating

Ask the factory for these files — we do not host downloads

  • Certificate of analysis for the quoted lot
  • Density method and result in g/cc
  • Melt-flow method, condition and result in g/10 min

  • REACH / RoHS statements that name the grade
  • FDA 21 CFR 177 or NSF file only when the duty requires it
  • California Proposition 65 statement if the receiving site asked

  • Virgin, PCR or mixed-feed declaration
  • Bag or gaylord weight and liner type
  • Incoterms next to the money figure

Send the equipment window with the brief

Include current approved density, melt-flow and feed type so a cheaper alternative can be rejected or accepted on paper.

Check Compatibility