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rHDPE Food Grade

rHDPE Food Grade — starting parameters

Typical set-up values for this grade. Use them as a starting window and fine-tune on your machine — the batch Material Test Report gives the measured MFI and moisture for the exact lot you receive.

💧
Drying
Optional · 60–70°C, 1–2 h
HDPE is non-hygroscopic — dry only if stored humid or you see surface splay
🌡️
Melt temperature
190–230°C
Start mid-window; rPCR runs cleanest at the lower end
🔥
Barrel profile
Feed 170 · Comp 200 · Met 215 · Die 210°C
Blow moulding — flat or slightly rising
🧊
Mould / die temp
20–40°C
Higher = better gloss, longer cycle
⚙️
Screw speed
60–100 rpm
Keep shear moderate to protect MFI
📐
Shrinkage
1.5–3.0%
Same tooling as virgin HDPE
🧪
MFI (190°C / 2.16 kg)
40–55 g/10min
ISO 1133 · confirmed per batch on MTR
🎨
Colour
100% natural
Takes masterbatch at virgin let-down ratios
Setup notes from our materials team
Blend-in ratioMost customers start at 30–50% rHDPE with virgin and move to 100% once colour and wall thickness are dialled in. The grade runs neat on standard equipment.
PurgingPurge with virgin HDPE or a commercial purge compound before and after — recycled grades carry more volatiles, so vent barrels properly.
Screen pack80/120 mesh screen recommended on extrusion lines. Contamination is controlled at source, but a screen protects your die.
OdourLow-odour grade. If odour is critical (food packaging), run a 20°C lower melt and increase venting; we can supply an odour-treated lot on request.
Values are typical starting points for standard equipment, not guarantees. Always confirm against the batch MTR and your own trial. Spec sheet (PDF) ↓ · Talk to a materials engineer
rHDPE Food Grade — consistency

Recent batch results

The number-one question we get on PCR is consistency. This is the melt flow result from each recent batch of this grade, plotted against the spec band. Anything outside the band is held and never shipped.

Example data — replace with your batch log in the theme editor
MFI (190°C / 2.16 kg)
Spec band 40–55 g/10min · last 12 batches
Spec bandBatch result
55 40 65 30 HO-HD-2601: 46 g/10min 2601 Jan 2026 HO-HD-2602: 48 g/10min 2602 HO-HD-2603: 45 g/10min 2603 HO-HD-2604: 49 g/10min 2604 HO-HD-2605: 47 g/10min 2605 HO-HD-2606: 51 g/10min 2606 HO-HD-2607: 46 g/10min 2607 HO-HD-2608: 44 g/10min 2608 HO-HD-2609: 48 g/10min 2609 HO-HD-2610: 47 g/10min 2610 HO-HD-2611: 50 g/10min 2611 HO-HD-2612: 46 g/10min 2612 Aug 2026
100%
batches in spec
47.3
mean g/10min
12
batches shown
ISO 1133
test method
View batch table
BatchDateMFI (190°C / 2.16 kg)MoistureStatus
HO-HD-2601Jan 202646 g/10min<0.05%In spec — released
HO-HD-2602Jan 202648 g/10min<0.05%In spec — released
HO-HD-2603Feb 202645 g/10min<0.05%In spec — released
HO-HD-2604Mar 202649 g/10min<0.05%In spec — released
HO-HD-2605Mar 202647 g/10min<0.05%In spec — released
HO-HD-2606Apr 202651 g/10min<0.05%In spec — released
HO-HD-2607May 202646 g/10min<0.05%In spec — released
HO-HD-2608May 202644 g/10min<0.05%In spec — released
HO-HD-2609Jun 202648 g/10min<0.05%In spec — released
HO-HD-2610Jul 202647 g/10min<0.05%In spec — released
HO-HD-2611Jul 202650 g/10min<0.05%In spec — released
HO-HD-2612Aug 202646 g/10min<0.05%In spec — released

Results from our partner lab per batch, reported on the Material Test Report shipped with each delivery. Batches outside the spec band are quarantined and reprocessed — they never reach a customer.

rPP Food Grade

rPP Food Grade — starting parameters

Typical set-up values for this grade. Use them as a starting window and fine-tune on your machine — the batch Material Test Report gives the measured MFI and moisture for the exact lot you receive.

💧
Drying
80°C, 1–2 h
Recommended — PP absorbs little, but PCR can carry surface moisture
🌡️
Melt temperature
200–240°C
Injection moulding · caps & closures typically 210–225°C
🔥
Barrel profile
Feed 180 · Comp 210 · Met 225 · Nozzle 220°C
Flat profile, moderate back pressure
🧊
Mould temperature
20–50°C
Lower for cycle time, higher for surface finish
⚙️
Injection speed
Medium–fast
Fill fast, hold at 30–50% of injection pressure
📐
Shrinkage
1.2–2.0%
Comparable to virgin homopolymer PP
🧪
MFR (230°C / 2.16 kg)
10–15 g/10min
ISO 1133 · MFR 4 and 8 grades available
🎨
Colour
100% natural
Slight cream tone — masterbatch at 2–4% for opaque colours
Setup notes from our materials team
NucleationGrade is un-nucleated. Add 0.1–0.2% nucleating agent if you need faster cycle times or higher stiffness on thin-wall parts.
Gate & ventingStandard PP gate sizing. Ensure good venting — PCR PP releases slightly more volatiles than virgin at the higher melt temps.
Blend-in ratioRuns neat. For food-contact applications start at 50% with virgin FDA PP and validate migration before going to 100%.
RegrindUp to 20% in-house regrind can be added without measurable MFR drift on this grade.
Values are typical starting points for standard equipment, not guarantees. Always confirm against the batch MTR and your own trial. Spec sheet (PDF) ↓ · Talk to a materials engineer
rPP Food Grade — consistency

Recent batch results

The number-one question we get on PCR is consistency. This is the melt flow result from each recent batch of this grade, plotted against the spec band. Anything outside the band is held and never shipped.

Example data — replace with your batch log in the theme editor
MFR (230°C / 2.16 kg)
Spec band 10–15 g/10min · last 12 batches
Spec bandBatch result
15 10 19 6 HO-PP-2601: 12.4 g/10min 2601 Jan 2026 HO-PP-2602: 11.8 g/10min 2602 HO-PP-2603: 12.9 g/10min 2603 HO-PP-2604: 13.3 g/10min 2604 HO-PP-2605: 12.1 g/10min 2605 HO-PP-2606: 11.6 g/10min 2606 HO-PP-2607: 12.7 g/10min 2607 HO-PP-2608: 13.0 g/10min 2608 HO-PP-2609: 12.2 g/10min 2609 HO-PP-2610: 11.9 g/10min 2610 HO-PP-2611: 12.6 g/10min 2611 HO-PP-2612: 12.3 g/10min 2612 Aug 2026
100%
batches in spec
12.4
mean g/10min
12
batches shown
ISO 1133
test method
View batch table
BatchDateMFR (230°C / 2.16 kg)MoistureStatus
HO-PP-2601Jan 202612.4 g/10min<0.05%In spec — released
HO-PP-2602Feb 202611.8 g/10min<0.05%In spec — released
HO-PP-2603Feb 202612.9 g/10min<0.05%In spec — released
HO-PP-2604Mar 202613.3 g/10min<0.05%In spec — released
HO-PP-2605Apr 202612.1 g/10min<0.05%In spec — released
HO-PP-2606Apr 202611.6 g/10min<0.05%In spec — released
HO-PP-2607May 202612.7 g/10min<0.05%In spec — released
HO-PP-2608Jun 202613.0 g/10min<0.05%In spec — released
HO-PP-2609Jun 202612.2 g/10min<0.05%In spec — released
HO-PP-2610Jul 202611.9 g/10min<0.05%In spec — released
HO-PP-2611Aug 202612.6 g/10min<0.05%In spec — released
HO-PP-2612Aug 202612.3 g/10min<0.05%In spec — released

Results from our partner lab per batch, reported on the Material Test Report shipped with each delivery. Batches outside the spec band are quarantined and reprocessed — they never reach a customer.

rPET Food Grade

rPET Food Grade — starting parameters

Typical set-up values for this grade. Use them as a starting window and fine-tune on your machine — the batch Material Test Report gives the measured MFI and moisture for the exact lot you receive.

💧
Drying
160–170°C, 4–6 h · dew point −40°C
Essential — moisture must be <50 ppm to protect IV
🌡️
Melt temperature
270–290°C
Keep residence time short; every 10°C over drops IV
🔥
Barrel profile
Feed 260 · Comp 275 · Met 285 · Nozzle 280°C
Hot-runner systems at 280–290°C
🧊
Mould temperature
10–40°C (amorphous / preforms)
120–140°C where crystalline parts are required
⚙️
Screw speed
40–80 rpm
Low compression screw (2.5:1–3:1) preferred
📐
Shrinkage
0.2–0.5% (amorphous)
1.0–1.5% crystalline
🧪
Intrinsic viscosity
0.80 ± 0.02 dl/g
ASTM D4603 · per batch on MTR
🎨
Colour
100% natural / clear
b* value on MTR · suitable for clear bottles & trays
Setup notes from our materials team
IV dropExpect 0.02–0.04 dl/g IV loss through a well-dried process. Under-drying is the most common cause of hazy, brittle parts — verify dryer dew point before every run.
Bottle-to-bottleFor preforms, blend 25–50% with virgin bottle-grade PET initially. Full-rPET preforms run well with a 5°C lower melt and slightly longer dry cycle.
Sheet & thermoformingIdeal for APET sheet at 0.80 IV. Use a vented extruder or crystallised feed to control moisture.
PurgingPurge with virgin PET; never leave rPET static in a hot barrel — degradation is fast above 290°C.
Values are typical starting points for standard equipment, not guarantees. Always confirm against the batch MTR and your own trial. Spec sheet (PDF) ↓ · Talk to a materials engineer
rPET Food Grade — consistency

Recent batch results

The number-one question we get on PCR is consistency. This is the melt flow result from each recent batch of this grade, plotted against the spec band. Anything outside the band is held and never shipped.

Example data — replace with your batch log in the theme editor
Intrinsic viscosity
Spec band 0.78–0.82 dl/g · last 12 batches
Spec bandBatch result
0.82 0.78 0.86 0.74 HO-PET-2601: 0.80 dl/g 2601 Jan 2026 HO-PET-2602: 0.81 dl/g 2602 HO-PET-2603: 0.79 dl/g 2603 HO-PET-2604: 0.80 dl/g 2604 HO-PET-2605: 0.80 dl/g 2605 HO-PET-2606: 0.82 dl/g 2606 HO-PET-2607: 0.79 dl/g 2607 HO-PET-2608: 0.81 dl/g 2608 HO-PET-2609: 0.80 dl/g 2609 HO-PET-2610: 0.80 dl/g 2610 HO-PET-2611: 0.79 dl/g 2611 HO-PET-2612: 0.81 dl/g 2612 Aug 2026
100%
batches in spec
0.8
mean dl/g
12
batches shown
ASTM D4603
test method
View batch table
BatchDateIntrinsic viscosityMoistureStatus
HO-PET-2601Jan 20260.80 dl/g<50 ppmIn spec — released
HO-PET-2602Feb 20260.81 dl/g<50 ppmIn spec — released
HO-PET-2603Feb 20260.79 dl/g<50 ppmIn spec — released
HO-PET-2604Mar 20260.80 dl/g<50 ppmIn spec — released
HO-PET-2605Apr 20260.80 dl/g<50 ppmIn spec — released
HO-PET-2606Apr 20260.82 dl/g<50 ppmIn spec — released
HO-PET-2607May 20260.79 dl/g<50 ppmIn spec — released
HO-PET-2608Jun 20260.81 dl/g<50 ppmIn spec — released
HO-PET-2609Jun 20260.80 dl/g<50 ppmIn spec — released
HO-PET-2610Jul 20260.80 dl/g<50 ppmIn spec — released
HO-PET-2611Aug 20260.79 dl/g<50 ppmIn spec — released
HO-PET-2612Aug 20260.81 dl/g<50 ppmIn spec — released

Results from our partner lab per batch, reported on the Material Test Report shipped with each delivery. Batches outside the spec band are quarantined and reprocessed — they never reach a customer.

Samples

Try it on your machine first.

A 2.5 kg or 5 kg bag of the grade you are considering, with its material test report and a sample chain-of-custody certificate. You pay the courier, nothing else.

Prefer to talk first? Book a 20-minute call with Tom or Angus.

Free sample kit
Free sample · pay shipping only