Stretch Film Technical Data Sheet – حلول تغليف موثوقة ومتينة لشريط الشحن الصناعي لشركتك

What This Dataset Covers

Use this dataset for comparison, inspection, approval, and trials. Link each result to type, thickness, batch, and method. It does not replace a roll specification or transport study. Shrink film, pressure-sensitive tape, and adhesive tests are outside this scope.

Review stretch film formats before testing.

Assess pre-stretched hand film separately because its supplied condition differs from conventional film.

From Resin System to Roll Geometry

Stretch film uses PE or LLDPE in mono- or multilayer construction. Cast and blown processing can change clarity, tear, puncture, cling, and unwind. Record process, layers, cling side, core, and winding condition.

Grade Approval Data

Item	Typical Value / Reference Range	Test Method or Condition	Notes
Structure	Tested grade	Material record	Identify resin, process, layers, and type.
Thickness	Grade value in um	Multi-position measurement	Read with tolerance and profile.
Tensile / elongation	MD and TD values	Conditioned tensile test	State unit, width, speed, direction.
Peel cling	Confirmed range	Film-to-film separation	State side, extension, temperature.
Puncture / tear	Tested results	Separate methods	Do not combine failures.
Recovery / retention	Stated extension	Extension-and-hold test	Supports retained-force comparison.
Haze / transmittance	Grade-specific	Optical test	Only where visibility matters.
Pre-stretch / containment	Project-confirmed	Wrapper and load trial	Depends on equipment and load.

Publish values only when supported by a grade, batch test, specification, declaration, or project trial. Mark industry figures as references.

Evidence Behind Each Result

Test Item	What It Checks	Suggested Method or Reference	Why It Matters	When To Request It
Thickness profile	Web variation	ISO 4593 or equivalent	Thin lanes reduce margin.	Downgauging or approval
Tensile / elongation	MD and TD behavior	ASTM D882 or equivalent	Defines directional strength.	New grade or thickness
Peel cling	Layer separation	ASTM D5458 or equivalent	Affects overlap and unwind.	Tail release or blocking
Puncture	Probe resistance	ASTM D5748 or equivalent	Represents edge risk.	Sharp loads
Recovery / retention	Retained stress	ASTM D5459 or equivalent	Relates to holding force.	Settling or storage
Containment	Force after wrapping	Calibrated load trial	Connects film to load.	New load or wrapper

A standard is a test basis, not certification. Record conditioning, direction, specimen size, speed, sample count, result rule, batch, and date.

Reading Performance Without Overreach

Thickness affects yield and puncture margin, but thicker film is not automatically better. Tensile strength is stress; force at break also reflects width and thickness. Elongation at break is a failure value, while recommended pre-stretch is equipment-confirmed. Peel cling is film-to-film interaction. Puncture and tear are different failures. Recovery and stress retention indicate retained holding force.

Compatibility Variables

Load weight, shape, surface, coating, edges, temperature, humidity, sunlight, storage, transport, equipment, operator method, film layers, and corner protection can change performance.

Controlled Trial Before Release

Record grade, batch, wrapper, pre-stretch, wrap force, pattern, load, and operator. Check roll edges, core shape, unwind, neck-down, breaks, tail retention, separation, puncture, movement, and barcode visibility. For a field-use checklist that connects these data points with real pallet movement, review how pallet wrapping methods affect load stability.

Recheck containment after 24 h, 72 h, and 7 days when relevant, then after handling.

Release only when criteria are met.

Where Data Drift Becomes Failure

Data Point	If Too Low	If Too High	Risk in Application	Check Before Full Use
Thickness profile	Weak lanes	Excess material	Breaks or uneven corners	Map thickness
Tensile strength	Early break	Poor conformity	Breaks or pressure points	Test MD and TD
Elongation	Low extension	Weak recovery	Breakage or loose wrap	Compare recovery
Peel cling	Tail release	Blocking	Loose tails or jerky unwind	Test at use temperature
Puncture resistance	Easy penetration	Heavy construction	Holes and tear initiation	Wrap sharpest load
Recovery / retention	Tension loss	Cargo compression	Shift or deformation	Measure after dwell
Pre-stretch setting	Low yield	Neck-down or breaks	Unstable containment	Set operating window

Preserving Roll Condition

Keep rolls dry and protected from sunlight, heat, pressure, contamination, and damage. Stabilize hot or cold rolls before testing. Recheck deformed material because storage can change cling, unwind, and repeatability.

Technical Routes Across the Site

Category, product, test, compatibility, and capability resources support this dataset without duplicating specifications.

Frequently Asked Technical Questions

How should a stretch film technical data sheet be read?

Confirm grade, thickness, direction, unit, method, conditioning, and data status. Compare equivalent results, then test the load and wrapper.

What is a typical value versus a guaranteed specification?

A typical value represents stated conditions. A guaranteed specification is an approved limit. Do not treat a reference value as a minimum.

Is recommended pre-stretch the same as elongation at break?

No. Elongation at break is a failure result. Recommended pre-stretch is confirmed with the film, equipment, and load.

Why can the same film perform differently?

Load shape, surface, edges, temperature, storage, wrap pattern, equipment, and operator method can change results. Sample testing is recommended.