01 STRETCH-WRAP SPECIMEN EVIDENCE
Stretch-film elastic recovery vs permanent deformation and stress retention
Elongation at break does not tell a buyer how an extended stretch-film specimen recovers, what deformation remains or how stress changes with time. Keep those three machine-direction outcomes separate, then retain tensile, peel-cling and applied unit-load evidence in their own method-bound records.
02 DECISION FRAME
Recovery, permanent deformation and stress retention are three evidence rows—not one stretch-film score
ASTM D5459-95(2025) separately names machine-direction elastic recovery, permanent deformation and stress retention for stretch-wrap film. ASTM D882-26 owns general thin-film tensile properties, ASTM D5458-95(2025) owns peel cling between film layers and ASTM D8314-20(2025) addresses film after hand or machine application to a unit load or test structure. Matching film names or units do not make these methods interchangeable.
- A stretch-wrap film comparison where elongation at break is being used as a shortcut for recovery or retained stress
- A supplier-document review where recovery, permanent deformation, stress retention and cling appear without a complete specimen and time basis
- A buyer qualification plan that must keep independent film-property evidence separate from applied unit-load performance
- Elongation at break does not predict elastic recovery, permanent deformation or stress retention
- A D5459 specimen result does not prove holding force, load containment, pallet stability, transport safety or outdoor performance
- A PE family label does not by itself qualify a stretch-wrap film; no LayerSource supply, testing or qualification conclusion follows from this editorial route
03 COMPARISON MAP
Choose the stretch-film evidence row before comparing an offer
Use this matrix to separate specimen, surface and applied-load decisions. It supplies no method conversion, preset extension, time, force, temperature, threshold or LayerSource capability.
Swipe or scroll horizontally to review every evidence column.
| Evidence row | Question it can address | Context to retain | Conclusion it cannot create alone |
|---|---|---|---|
| Intended use and exact film identity | Which indoor stretch-wrap use, hand- or machine-wrap path and identified construction is under review? | Load context, film and supplier-document revision, lot, roll, specimen stage, thickness basis and prior stretch history | An available LayerSource grade, outdoor claim, wrapper setting or unit-load approval |
| ASTM D5459 elastic recovery | What recovery outcome is reported for the identified machine-direction specimen under the selected method basis? | Current edition, specimen identity, direction, conditioning, extension and recovery-time basis, original output and raw record | Permanent deformation, stress retention, elongation at break, peel cling or applied holding force |
| ASTM D5459 permanent deformation | What deformation remains for the same identified specimen and controlled history? | Current edition, specimen, direction, prior history, extension and time basis, original output, replicates and report role | Elastic recovery, stress retention, tensile strength, pallet stability or a commercial-roll release |
| ASTM D5459 stress retention | How is the reported specimen stress retained over the identified extension and time basis? | Current edition, specimen, direction, thickness, conditioning, extension, time basis, instrument record, output and unit | A package holding-force claim, wrapper load, transport outcome or outdoor performance |
| ASTM D882 tensile properties | Which tensile strength, modulus or elongation output is reported for an identified thin-film specimen? | Current edition, exact output, specimen, direction, thickness, grips, extension measurement, force-time basis and original unit | A D5459 recovery, deformation or stress-retention result, or an applied unit-load conclusion |
| ASTM D5458 peel cling | What peel-cling result is reported between the identified stretch-film layers and surfaces? | Current edition, exact film faces, specimen history, conditioning, method output, unit, sampling and raw record | COF, recovery, deformation, stress retention, tensile strength or unit-load containment |
| ASTM D8314 applied-film evidence | What evidence is reported after identified film is applied by hand or machine to a unit load or test structure? | Current edition, film and roll, application path, load or structure identity, equipment and settings record, observation and disposition | An independent D5459 or D882 film-property result, universal wrapper recipe or transport guarantee |
| Purchasing and application boundary | Which requirement, supplier record, specimen result and representative applied-load decision must be approved separately? | D4649 scope decision, document roles, indoor-use boundary, criteria owners, deviations, change control and requalification route | Outdoor exposure, field life, safety, every-load fitness or a LayerSource supply, laboratory or performance claim |
04 SELECTION SEQUENCE
Move from a broad comparison to an approvable decision.
Name the exact evidence question
State whether the buyer needs elastic recovery, permanent deformation, stress retention, a D882 tensile output, peel cling or applied unit-load evidence. Do not combine those outcomes into a generic stretch score.
Align the specimen and time basis
Keep construction, lot, roll, machine direction, thickness method, conditioning, prior stretch history, selected method, extension and time basis beside every result.
Validate the identified unit load separately
After the specimen evidence is understood, create a separate buyer-owned applied-film plan for the real hand- or machine-wrap path, load, settings record, criteria, deviations and release owner.
05 RFQ INPUTS
Stretch-film recovery, deformation and stress-retention RFQ checklist
Use exactly these eighteen fields. Unknown values stay open for the responsible parties; this page supplies no default test or application setting.
Open the RFQ brief builder ↗- 01
Intended indoor use, product or load context and the buyer decision this evidence must support
- 02
Hand-wrap or machine-wrap application path, including the identified application stage
- 03
Exact film construction, grade or supplier-document identity and controlled revision
- 04
Lot, roll, cross-web location and specimen identity
- 05
Nominal thickness, selected thickness method, sampling and report basis
- 06
Machine-direction trace from specimen to roll and application path
- 07
Conditioning, storage, age and prior stretch or conversion history
- 08
Selected ASTM D5459 edition or other named method with laboratory-confirmed applicability
- 09
Extension level or levels selected by the responsible parties and retained in the original report
- 10
Extension, hold, release and recovery-time basis retained without a page-supplied value
- 11
Elastic-recovery result, original output name, unit and individual records
- 12
Permanent-deformation result, original output name, unit and individual records
- 13
Stress-retention result, original output name, unit and time relationship
- 14
Original units, calculations, variability, limitations and raw-record references
- 15
Responsible laboratory, instrument identity, range, calibration and applicability record
- 16
Sampling population, specimen count, replicate plan and invalid-result rule
- 17
Separate ASTM D882 tensile, ASTM D5458 peel-cling or ASTM D8314 applied-film evidence references when required
- 18
Buyer acceptance criterion, disposition, deviation, retest, change-control and responsible owners
06 EVIDENCE BOUNDARY
Specimen evidence does not become a unit-load, transport or LayerSource claim
ASTM D4649-20(2025) is active and supports buyer/seller selection, specification and application of stretch films within its stated indoor-environment scope; it does not cover outdoor-exposure performance. ASTM D5459-95(2025) is active and separately names machine-direction elastic recovery, permanent deformation and stress retention of stretch-wrap film. ASTM D8314-20(2025) is active and addresses film after hand or machine application to a unit load or test structure, expressly separating applied performance from independent film-property testing. ASTM D882-26 is active and covers tensile properties of thin plastic sheeting; its public significance statement cautions against treating data as significant for applications with widely different force-time scales. ASTM D5458-95(2025) is active and owns peel cling between stretch-film layers. These methods are not equivalent, interchangeable, convertible or substitutes for one another. This page reproduces no paid procedure, specimen dimension, pre-stretch, extension, conditioning value, time, force, load, temperature, speed, formula, threshold, pass/fail rule or wrapper setting. It establishes no LayerSource stretch film, functional PE film, grade, inventory, supply, manufacturing, converting, wrapper, laboratory, testing, recovery, permanent-deformation, stress-retention, cling, holding-force, load-containment, pallet-stability, transport, outdoor or performance capability or result. The buyer, supplier, converter, responsible laboratory and application owner must approve the exact current method, specimen basis, criteria, applied-load validation and disposition.
07 BUYER QUESTIONS
Resolve the assumptions that make quotes diverge.
01Does elongation at break prove elastic recovery?+
No. D882 elongation and D5459 elastic recovery answer different specimen questions and retain different method, extension, time and output bases. Keep them in separate evidence rows.
02Are elastic recovery and permanent deformation interchangeable?+
No. ASTM D5459 names them as separate outcomes. Record each under its original result name, specimen history, extension and time basis rather than calculating one as a substitute for the other.
03Does stress retention equal peel cling or holding force?+
No. D5459 stress retention concerns an identified film specimen, D5458 owns peel cling between layers, and applied holding or containment requires a separate unit-load evidence plan.
04Can a D5459 result approve a pallet or transport route?+
No. A specimen result does not qualify the load, wrapper settings, handling, transport or field environment. Those decisions need representative applied-film and use-stage evidence with buyer-owned criteria.
05Does ASTM D4649 cover outdoor stretch-film performance?+
Its current public scope is limited to stretch films intended for indoor environments. Outdoor exposure, weathering and field life remain separate evidence questions.
06Does this guide mean LayerSource supplies stretch-wrap film?+
No. This is an editorial method and RFQ map. It identifies no LayerSource grade, supplier relationship, inventory, test result, laboratory or supply capability.
07What closes a stretch-film buying decision?+
Approve the exact film and document identity, separate method-bound specimen results, representative hand- or machine-applied evidence, buyer criteria, deviations, disposition and change-control owner.