01 ELECTROSTATIC FILM EVIDENCE
Antistatic film: separate resistance, charge decay and package evidence
“Antistatic” is not a complete film specification. First state whether the decision concerns surface or through-thickness resistance, dissipation after a defined charging method, charge generated by contact and separation, or protection by a complete package. Then keep the method, film side, conditioning, specimen history and evidence level beside every result.
02 DECISION FRAME
Select the electrostatic question before requesting a number
IEC 61340-2-3 and ASTM D257 provide resistance or resistivity method contexts. IEC 61340-2-1 addresses charge dissipation and explicitly separates corona charging from a charged-metal-plate method that may not give equivalent results. ASTM D4470 addresses static electrification under controlled conditions. IEC 61340-5-3 classifies properties and requirements for packaging intended for electrostatic-discharge-sensitive devices. Those records answer different questions and cannot be converted into one generic antistatic pass statement.
- A buyer whose RFQ says only antistatic, static dissipative or ESD film
- A supplier-document review where resistance and charge-decay results are being treated as equivalent
- A converted-film or electronics-packaging project that must separate base-film evidence from package-system qualification
- That one surface-resistance result proves low charging, charge decay, shielding or package protection
- That corona and charged-metal-plate decay methods produce interchangeable results
- That any cited standard establishes a LayerSource grade, test service, certification, compliance or supply capability
03 COMPARISON MAP
Match each evidence row to the property and specimen it actually measures
Use this table only to select and brief the evidence route. The responsible technical owner and laboratory must confirm the current licensed method, applicability and acceptance basis.
Swipe or scroll horizontally to review every evidence column.
| Evidence row | Question it may address | Keep attached | Do not infer |
|---|---|---|---|
| Surface resistance or surface resistivity | Electrical behaviour measured along an identified material surface under the selected IEC 61340-2-3 or ASTM D257 context | Exact film side, construction, electrode geometry, applied voltage, electrification time, conditioning, environment and output identity | Charge-decay time, low charging, volume behaviour, ESD shielding or complete-package protection |
| Volume resistance or volume resistivity | Electrical behaviour through the identified specimen thickness under an applicable resistance-method context | Thickness, specimen geometry, electrode arrangement, voltage, time, conditioning, environment and calculation basis | Surface behaviour, charge generation, decay response or a package classification |
| Corona charge decay | Rate at which an identified material surface dissipates charge after the IEC 61340-2-1 corona-charging route | Tested side, charging basis, initial and final potential definitions, timing rule, conditioning, environment and specimen history | The result of the charged-metal-plate route, resistance, triboelectric charging tendency or package protection |
| Charged-metal-plate decay | Dissipation observed through the IEC 61340-2-1 charged-conductive-object route when applicable to the product decision | Contact arrangement, material and object identity, potential endpoints, timing rule, conditioning and limitations | Self-dissipation of the same surface or equivalence with corona charge decay |
| Static electrification | Charge generated under an identified contact, separation or other controlled ASTM D4470 electrification event | Materials, surfaces, motion or event, environment, instrument, repetitions, field or charge output and observations | Resistance, decay time, hazard elimination, safe-use controls or package classification |
| ESD packaging and packaging-material evidence | A method-bound property result for an identified packaging material, or applicable classification evidence for an identified packaging construction under IEC 61340-5-3 | Material or package identity, construction, protected item and handling context, each applicable method, result level and approval owner | That one base-film resistance or decay result alone proves the complete package protects the intended item |
03A EVIDENCE HIERARCHY
Keep a material statement, lot result and package decision in different records.
Each level can answer a narrower question. Moving downward requires a newly identified specimen and decision; it is not an automatic upgrade of the earlier document.
| Evidence level | What it may support | Keep attached | What it cannot replace |
|---|---|---|---|
| Buyer-controlled requirement | The electrostatic question, intended use and acceptance owner | Property, method, specimen stage, conditions and decision rule | A supplier result, film qualification or package evaluation |
| Supplier TDS or specification | A document statement for its identified grade and revision | Supplier, grade, revision, property wording, method and exclusions | A result for the delivered lot or converted construction |
| Lot COA or batch report | A reported result for the named lot, roll or specimen scope | Traceability, tested side, date, conditioning, method and original output | Grade-wide life, charging behaviour or package protection |
| Laboratory report | A method-bound result for the submitted specimen | Laboratory, report, electrodes or charging method, environment and uncertainty basis | A different method, later film state or complete package classification |
| Converted-film or package evaluation | The identified construction at an agreed conversion or use stage | Printing, lamination, sealing, aging, package format and system-level plan | Unqualified structures, future changes or every destination requirement |
04 SELECTION SEQUENCE
Move from a broad comparison to an approvable decision.
Name the electrostatic failure question
State whether the buyer needs resistance, charge dissipation, charging tendency or complete packaging protection. If the protected item and decision owner are unknown, leave the method and criterion open.
Freeze the specimen and exposed side
Record base film, printed or laminated web, bag or complete package; mark the tested face, thickness, age, storage, conditioning and every conversion step before the test.
Move evidence only through a new validation gate
Treat a TDS, lot report, laboratory result, converted-film trial and package evaluation as separate records. Define the next sample, method and approval owner instead of promoting one result to a broader claim.
05 RFQ INPUTS
Antistatic-film electrostatic evidence RFQ checklist
Use fixed fields for the question and evidence basis; leave the method or criterion open when the responsible technical owner has not confirmed it.
Open the RFQ brief builder ↗- 01
Application, protected item or process, package format, handling stage and electrostatic failure question
- 02
Buyer-owned property request: surface resistance/resistivity, volume resistance/resistivity, charge decay, static electrification or package classification
- 03
Exact grade or open recommendation, complete construction, thickness, additives or coatings only when documented
- 04
Specimen stage: base film, converted web, bag, finished package or another explicitly identified article
- 05
Tested side and side map, contact surface or object, print/lamination/seal state and unwind orientation where relevant
- 06
Current applicable standard and edition selected by the responsible parties; unknown applicability stays open
- 07
For resistance: electrode or probe geometry, applied voltage, electrification time, specimen geometry and reported resistance or resistivity identity
- 08
For decay: corona or charged-metal-plate route, charging basis, initial/final potential definitions and timing rule
- 09
For static electrification: materials, contact/separation event or motion, field or charge output and repetitions
- 10
Conditioning temperature, relative humidity, duration, test environment and transfer time after conditioning
- 11
Film production or sample date, age, storage, packing, handling, contamination and prior conversion history
- 12
Original result, units, statistic, variability, below-range or equipment-limitation statement and laboratory report reference
- 13
Buyer requirement, supplier specification, TDS statement, lot COA, laboratory report and package evaluation kept as separate evidence roles
- 14
Acceptance owner, buyer-controlled criterion, retest and disposition route, retain sample and uncertainty treatment
- 15
Printing, lamination, sealing, aging, storage, use-stage or complete-package validation plus change-control triggers
- 16
Destination or customer standard, competent ESD owner and any hazardous-environment question referred outside this sourcing guide
06 EVIDENCE BOUNDARY
No single value creates an antistatic, ESD-safe or package-protection claim
IEC 61340-2-1:2015+AMD1:2022 CSV measures charge-dissipation ability and says its corona-charging and charged-metal-plate methods are different and may not give equivalent results. IEC 61340-2-3:2016, with COR1:2023 included in the current official copy, covers resistance and resistivity methods for solid materials used to avoid electrostatic charge accumulation. ASTM D257-14(2021)e1 covers DC insulation, surface and volume resistance contexts but says results depend on factors including electrification time, specimen and electrode geometry, temperature and humidity, and its scope is not suitable for moderately conductive materials. ASTM D4470-18(2025) addresses generation and measurement of static electrification under controlled conditions; its scope does not solve hazards or unwanted-charge elimination. IEC 61340-5-3:2022 addresses property and classification evidence for packaging materials and packaging intended for electrostatic-discharge-sensitive devices; it does not turn one base-film result into a complete-package protection conclusion. This page reproduces no paid procedure, fixed threshold, service-life rule, conversion, certification or compliance conclusion. It establishes no LayerSource film, grade, additive, inventory, supply, manufacturing, testing, laboratory, packaging or ESD capability. The buyer, supplier, responsible ESD owner and laboratory must approve method applicability, conditions, criteria and system validation for the actual use.
07 BUYER QUESTIONS
Resolve the assumptions that make quotes diverge.
01Is surface resistance the same as charge decay?+
No. Resistance or resistivity and charge dissipation are separate evidence rows with different methods, apparatus and outputs. Do not convert one result into the other or use either as proof of low charging.
02Can IEC 61340-2-1 corona and charged-metal-plate results be compared directly?+
Not as equivalent results. IEC states that the two methods are different and may not give equivalent results. Preserve the selected charging route, specimen arrangement, potential endpoints, conditions and timing basis.
03Does one film resistance result prove an ESD-protective package?+
No. IEC 61340-5-3 concerns the identified packaging system and its applicable properties. A base-film result does not automatically classify a converted bag or complete package or prove protection for an item.
04Can a result transfer between film sides, humidity levels or sample ages?+
Not automatically. Keep side, construction, environment, conditioning, age, storage, handling and conversion history with the result. A changed surface or specimen needs a separately approved comparison or requalification plan.
05Does ASTM D4470 establish that an electrostatic use is safe?+
No. Its public scope addresses controlled generation and measurement of static electrification and excludes solving hazards or eliminating unwanted charge. Safety and hazardous-environment decisions require a competent owner outside this guide.
06What should the first supplier enquiry include?+
Include the electrostatic question, exact construction and specimen stage, tested side, requested method and edition if confirmed, conditioning and environment, sample history, original evidence role, buyer-owned decision rule and remaining converted-film or package validation.