Filling and packaging engineering
rPET is not one uniform material. Feedstock, recycling process, intrinsic properties, color, contamination controls, blend, preform manufacture and lot variation can influence the stretch-blow window and finished package, so qualification must be supplier- and specification-specific.
Direct answer
Qualify the exact supplier, recycling process, resin or preform specification, recycled-content range and intended market before line trials. Verify food-contact documentation, material consistency, processability, bottle performance, sensory and migration or other required evidence, then run the approved packages through the complete line and distribution system.
System focus 01
rPET is not one uniform material. Feedstock, recycling process, intrinsic properties, color, contamination controls, blend, preform manufacture and lot variation can influence the stretch-blow window and finished package, so qualification must be supplier- and specification-specific. Cover recycler and converter approval, food-contact status, resin or preform receipt, storage, drying or handling, blow molding, bottle inspection, filling, closure, label, pack, shelf and distribution. Define mass-balance or recycled-content claim evidence separately from technical capability.
System focus 02
Create a material change protocol and compare candidate lots against the approved virgin or current-rPET baseline. Review supplier process and compliance evidence, test material and preform properties, develop the blower window, sample across cavities and lots, and complete functional, sensory and line trials under representative conditions.
System focus 03
A successful short run from a hand-selected lot can miss commercial lot variation, contamination, color or thermal differences. Adjusting heat to achieve bottle shape can change acetaldehyde, haze, distribution or energy while labels and packs may expose additional variation.
System focus 04
Audit certificates and lot genealogy, confirm actual recycled-content range, test multiple representative lots and production cavities, and trend rejects, bottle properties and process settings. Verify final package, shelf and distribution performance before routine approval.
System focus 05
Release an approved supplier and material specification, compliance dossier, incoming checks, blower recipe window, functional and line evidence, deviation rules and periodic requalification plan. Reopen after recycler, process, blend, color, preform or market changes.
Decision evidence matrix
Replace these planning rows with approved project values, revisions and responsible roles before procurement or operation.
| Input or condition | Decision criterion | Verification check | Release evidence |
|---|---|---|---|
| Recycler, converter, process, grade, blend and recycled-content specification | Compliance evidence matches supplier, process, product and market | Reconcile supplier, process, grade and lot compliance evidence | rPET supplier, process and preform qualification dossier |
| Destination food-contact, claim and traceability requirements | Representative lots run within a capable blower and bottle window | Test multiple lots and cavities against the controlled baseline | Approved material specification and incoming-control plan |
| Preform geometry, IV or relevant material properties, color and lot evidence | Finished package meets quality, sensory and distribution requirements | Run full-line, stop-restart, pack and shelf trials | Blower window, bottle capability and complete-line trial report |
| Blower, bottle, filling, pack, shelf and distribution performance criteria | Routine incoming and change controls detect material drift | Audit incoming, recipe, reject and claim traceability | Claim, lot, deviation and requalification control procedure |
Applicable law, signed contracts, equipment manuals and competent project review remain authoritative.
Problem-solving workflow
Do not change equipment from a symptom alone. Define the boundary, check the evidence and send one consistent record set for review.
Start with what can be observed and where it occurs. Use these page-specific boundaries to separate symptoms from assumed causes.
Check records, measurements, samples or trials before accepting a root cause. These are the most relevant evidence points for this topic.
Email the items below with the page link, current condition and desired outcome. The Allot Tech project desk can then respond on the same technical basis.
Technical reading
Confirm the standards, guidance and legal requirements that apply to the project location and product before final design.
Primary EU legal source used for recycled-plastic food-contact process and compliance context.
First-party PET industry-association source used for current bottle-to-bottle recycling terminology and process context.
First-party packaging laboratory source used for current preform, bottle and functional-test capability context.
Buyer questions
Use these answers as a project-planning starting point. Final equipment and performance remain subject to the confirmed brief.
Not by assumption. Material and lot behavior may differ; develop and approve the process window with representative preforms and bottle tests.
No. It is necessary where applicable but does not prove line processability, bottle function, sensory performance, lot control or distribution capability.
Choose a representative plan from supplier and process variability, risk and intended range. One universal number cannot establish qualification.
Recycler, recycling process, feedstock control, blend, additive, color, converter, preform geometry, manufacturing site or compliance change should enter controlled impact assessment.
Capacities, process routes, layouts, utilities and equipment shown on this site are decision frameworks and reference examples. They are not a final specification, performance guarantee or offer. Confirmed scope and performance are defined in the signed technical and commercial agreement.
Allot Tech project desk
Share the source water, bottle or preform, neck and cap, requested XGF output class, label, pack, voltage and destination. We will use them as the basis for a project-specific equipment discussion.