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Oct . 16, 2025 12:10 Back to list

HDPE Sheet – Durable, Food-Grade, UV & Chemical Resistant


HDPE Sheet: field notes, specs, and what buyers quietly ask

I’ve watched plastic sheet demand yo-yo with supply chains, and—surprisingly—HDPE sheet keeps trending upward. It’s simple, tough, and price-stable compared with some engineered polymers. In Hebei, at No.316 Pingan West Street, Shunping County (yes, I did stop by for a quick floor walk), it’s clear why: consistent extrusion, clean edges, and that glossy finish many fabricators like.

HDPE Sheet – Durable, Food-Grade, UV & Chemical Resistant

What it is (and why shops buy it)

A HDPE sheet is a high-density polyethylene plate with low moisture absorption, high impact strength, and decent chemical resistance. Think cutting boards, tank liners, playground panels, truck bed liners, and marine fenders. Many customers say it machines “buttery” with sharp tooling. Is it UHMW? No—less slippery, but generally more economical and easier to thermoform.

Core specifications

Thickness 3–20 mm (custom up to ≈30 mm on request)
Width 1000–1500 mm
Length Any length (coil or cut-to-size, real-world shipping may limit)
Density ≈0.95 g/cm³ (ASTM D792)
Tensile strength ≈21–28 MPa (ASTM D638, varies with grade/UV)
Elongation at break >500% (ASTM D638)
Izod impact No break to ≈100 J/m (ASTM D256)
Surface / Color Glossy; natural, black, yellow, red, green, or custom

Process flow (how it’s actually made)

Materials: HDPE resin (food-contact grades on request) + color masterbatch + optional UV package.
Methods: Gravimetric dosing → melt extrusion → die/roll calendaring → controlled cooling → edge trimming → optional annealing → protective film.
QC: Dimensional check (±0.2–0.5 mm typical), gloss/visual, tensile (ASTM D638), impact (ASTM D256), density (ASTM D792), migration for food grades (EU 10/2011 or FDA). Service life: indoors 10–20 years; outdoors with UV package ≈5–10 years depending on sun load.

Where it gets used

  • Food processing boards and guides (FDA/CFR-compliant grades)
  • Chemical tank lining, plating lines, spill trays
  • Marine dock fenders, sliding pads, boat furniture panels
  • Truck/UTE liners, agricultural hopper liners
  • Playground and wall cladding; signage backer; temporary floor protection

Vendor comparison (real buyers ask this first)

Vendor Certs MOQ Lead time Customization Notes
Lida Plastic (Hebei) ISO 9001; food-contact option (FDA/EU) ≈500–1000 kg 10–20 days Color, UV, cut-to-size Factory address public; responsive on odd sizes
Vendor A (Regional) ISO 9001 ≈1 ton 3–4 weeks Color, limited UV Price-focused, limited widths
Vendor B (Global) ISO 9001/14001 Project-based 4–6 weeks Broad portfolio Premium pricing; strong documentation

Testing, standards, and data you can actually use

Typical compliance: ISO 9001 QMS, RoHS, REACH; food-contact grades per FDA 21 CFR 177.1520 or EU 10/2011. Test panels I reviewed showed tensile ≈24 MPa and Izod “no break” at room temp—good signs for impact-prone fixtures. Always ask for batch COA and third-party reports if your auditor is strict.

Mini case files

Food plant retrofit (EU): Switched to black HDPE sheet with FDA/EU compliance; reduced board warping and downtime. Maintenance team noted “easier cleaning, less swelling.”

Dock fender panels (APAC): UV-stabilized HDPE sheet, 12 mm, cut-to-length. After one typhoon season, inspectors reported only superficial scuffing; panels stayed flat.

Quick buying tips

  • Specify standard: ASTM D638/D256 data and UV package if outdoors.
  • Confirm tolerance and flatness; ask for annealing on thicker gauges.
  • For food use, request migration test reports and material declaration.

Authoritative citations

  1. ASTM D638 – Standard Test Method for Tensile Properties of Plastics. https://www.astm.org/d0638
  2. ASTM D256 – Standard Test Methods for Izod Pendulum Impact Resistance. https://www.astm.org/d0256
  3. FDA 21 CFR 177.1520 – Olefin polymers (food contact). https://www.ecfr.gov/current/title-21/section-177.1520
  4. EU Regulation No 10/2011 on plastic materials for food contact. https://eur-lex.europa.eu
  5. ISO 9001:2015 – Quality management systems. https://www.iso.org/standard/62085.html

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