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Application to purchase axes

closed cell polyethylene foam

A project becomes a closed cell polyethylene foam request when you write cell structure, thickness, density and destination. This page does not promise a finished package, an R-value, or a US spray-foam crew.

Protective packaging

Write closed cell polyethylene foam when moisture pickup matters. Pair thickness in inches or mm with density in pcf or g/cc. Open-cell is a different request.

Buyer decision: wrap vs die-cut nest, and whether adhesive-backed foam is in the same line.

Case inserts

Translate the cavity into sheet size and layer count. Closed cell polyethylene foam is common; laminated skins and CNC time stay off the foam unit unless quoted.

Buyer decision: which density sits against the part and which sits as a spacer.

Insulation liners

Service temperature in °F or °C belongs on the request. A brochure thermal claim is not a method. Cross linked polyethylene foam is a substitution only when written down.

Buyer decision: whether the liner is a product supply or a field install (the latter is out of scope).

OEM pads and gaskets

Use Shore A only if the drawing uses hardness. Many PE foam drawings use density instead. Compression set belongs with the plant method, not a guessed percentage.

Buyer decision: food-contact or automotive files on that grade, if required.

Selection checklist before the request goes out

These items stay the buyer’s decision. Factories can propose, but they should not silently fill the gaps.

  • Closed-cell vs open-cell named in the same words the plant will invoice.
  • Thickness in inches or millimetres, not “standard closed cell polyethylene foam”.
  • Density in pcf or g/cc with ASTM D3575 or the method you accept.
  • Shore A only when the drawing uses hardness; do not mix Shore A and Shore D.
  • Service temperature in °F or °C with the medium if a liner will see heat.
  • Format: sheet, roll, block or adhesive-backed strip.
  • Documents that must travel with the lot, named to the grade.
Closed-cell vs open-cell is a purchase choice, not a slogan
Ask Closed-cell lean Open-cell lean
Moisture path Usually lower pickup; still confirm density and skin Different recovery and moisture path; do not swap silently
Typical brief Packaging, case insert, many liners Filter, cushion or a drawing that names open-cell
What stays yours Whether closed cell polyethylene foam is actually required Whether the plant may offer a different cell as an equivalent

Send the application as purchase axes

Use the form. We will not convert a photo into a finished specification. Missing closed-cell / open-cell or density fields stay visible.

Write thickness, density, cell structure and format; quantity with unit; destination state or postal code and requested delivery / lead time; required product documents and sample needs. Optional target budget with currency and unit or whole-order basis; optional supplier preference. Drawings can be sent after we reply; this form has no upload field.